CN110418412B

CN110418412B - Beam management method, relay transceiving node, terminal and base station

Info

Publication number: CN110418412B
Application number: CN201810400477.7A
Authority: CN
Inventors: 秦城; 孙彦良; 徐凯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2022-01-14
Anticipated expiration: 2038-04-28
Also published as: CN110418412A; WO2019206168A1

Abstract

The application discloses a beam management method, a relay receiving and transmitting node, a terminal and a base station, wherein the method comprises the following steps: the relay transceiving node determines a first resource group and a second resource group, and transmits the beams in the first beam group according to the corresponding relation between the resource units included in the first resource group and the beams in the first beam group; sending the beams in the second beam group according to the corresponding relation between the resource units included in the second resource group and the beams in the second beam group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beams transmitted on the same resource units are the common beams of the access link and the backhaul link. The use of the same resource units for transmitting the common beam on the access link and the backhaul link is advantageous for reducing the resource overhead for the beam management in this part, as well as reducing the overall delay of the beam management process.

Description

Beam management method, relay transceiving node, terminal and base station

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a beam management method, a relay transceiver node, a terminal, and a base station.

Background

In the 5G NR system, a wireless backhaul (backhaul) technology establishes a beam-based wireless link between base stations for data and signaling transmission, which can reduce network erection and deployment costs, and is of great significance for scenes such as intensive deployment and indoor transmission in 5G. The Integrated Access Backhaul (IAB) technology can share frequency band resources through an access link (i.e., an access link) and a backhaul link (i.e., a backhaul link) to perform co-frequency deployment, which can improve the utilization efficiency of a frequency spectrum.

NR systems introduce the concept of beam management due to the need to use beams in high frequencies. The beam management refers to a series of operation processes of obtaining and managing downlink and uplink transmission and reception of a user by a base station and a user side, and comprises beam selection, beam measurement, beam reporting, beam scanning and the like. Beam management is based on a series of reference signals on which the base station or user uses different transmit or receive beams to effect scanning of the beams. The user or the base station performs measurement based on the scanned beam, further performs a beam selection process, and feeds back the selected result.

In the present discussion and conclusion of NR, only the uplink or downlink beam management procedure is involved and is a discussion that is made independently. However, in the IAB scenario, the relay transceiver node may be configured to transmit to the base station and the terminal simultaneously, i.e. the relay transceiver node transmits the backhaul link uplink and the access link downlink simultaneously. Since the beam management process is required in the same manner in the IAB scenario, if uplink and downlink beam management is performed independently, corresponding reference signal resources need to be configured for uplink and downlink beam management, respectively, which will cause waste of time-frequency resources.

In summary, in the access backhaul integration scenario, the relay transceiver node performs beam management on the backhaul link and the access link independently, which results in a technical problem of time-frequency resource waste.

Disclosure of Invention

The application provides a beam management method, a relay transceiver node, a terminal and a base station, which are used for solving the technical problem of time-frequency resource waste caused by that the relay transceiver node respectively and independently performs beam management on a return link and an access link in an access return integrated scene.

In a first aspect, the present application provides a beam management method, for a relay transceiver node, the relay transceiver node transmits an uplink beam to a base station and transmits a downlink beam to a terminal on a series of reference signal resources, and specifically, the method includes: a relay transceiver node determines a first resource group and a second resource group, wherein resource units in the first resource group are used for measuring and selecting beams in a first beam group between the relay transceiver node and a terminal, and resource units in the second resource group are used for measuring and selecting beams in a second beam group between the relay transceiver node and a base station; the relay transceiver node transmits a first beam group using the first resource group, transmits a second beam group using the second resource group, that is, transmits a beam in the first beam group according to a correspondence between a resource unit included in the first resource group and a beam in the first beam group, and transmits a beam in the second beam group according to a correspondence between a resource unit included in the second resource group and a beam in the second beam group, wherein when the resource unit included in the first resource group and the resource unit included in the second resource group have the same resource unit, a beam transmitted by the relay transceiver node on the same resource unit is a common beam for the access link and the backhaul link, that is, when the first resource group and the second resource group have the common resource unit, the first beam group and the second beam group have the common beam, the relay transceiver node transmits the common beam corresponding to the common resource unit using the common resource unit. For a terminal, when a relay transceiver node transmits a beam to the terminal on a series of reference signal resources, the terminal receives the transmission beam from the relay transceiver node on the series of reference signal resources. Specifically, the terminal determines a first resource group configured by the relay transceiver node, and the terminal receives beams in the first beam group from the relay transceiver node by using the first resource group. For a base station, when a relay transceiver node transmits an uplink beam to the base station on a series of reference signal resources, the base station receives a transmission beam from the relay transceiver node on the series of reference signal resources. In particular, the base station determines a second set of resources, which the base station uses to receive beams of the second set of beams from the relay transceiver node. The first resource group is included in a first reference signal resource, the second resource group is included in a second reference signal resource, the second reference signal resource is partially overlapped with the first reference signal resource, the first reference signal resource is configured for the terminal by the relay transceiver node according to the second reference signal resource, wherein the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of an access link, and the second reference signal resource is used for beam management of a backhaul link.

In the above embodiment, when the relay transceiver node performs joint beam management of the Backhaul link and the access link, and when the first resource group and the second resource group have a shared resource unit, that is, when the uplink reference signal resource required for beam management of the Backhaul link and the downlink reference signal resource required for beam management of the access link exist and a part of frequency domain resources overlap, the rrtp may effectively use the shared reference signal resource and beam to complete a part of beam management on the Backhaul link and the access link, which is beneficial to reducing resource overhead of the part of beam management and reducing total delay of the whole beam management process.

For the relay transceiver node, the following method flows are also executed in the beam management process of the relay transceiver node:

in one possible design, the relay transceiver node determining a first set of resources and a second set of resources includes: the relay transceiver node determines a first reference signal resource according to a second reference signal resource, so that the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of the access link, and the second reference signal resource is used for beam management of the backhaul link; the relay transceiving node determines the first resource group according to a first reference signal resource and determines the second resource group according to a second reference signal resource; wherein the first set of resources is included in the first reference signal resource and the second set of resources is included in the second reference signal resource. And determining a first reference signal resource according to the configuration of a second reference signal resource by the base station, and partially overlapping the first reference signal resource and the second reference signal resource, so that the frequency domain resource is partially overlapped when an uplink reference signal resource required by the beam management of a return link and a downlink reference signal resource required by the beam management of an access link exist.

In one possible design, before the relay transceiver node transmits the beams in the first beam group according to the correspondence between the resource units included in the first resource group and the beams in the first beam group, the method further includes: the relay transceiver node determines a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam in the first beam group; the relay transceiver node determines a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and the power offset value associated with each beam; and the relay transceiver node sends the power offset value associated with each resource unit in the first resource group to the terminal. In the embodiment of the application, when a common beam exists between an uplink beam and a downlink beam, the problem that the transmission power possibly encountered by the common beam and a non-common beam in the downlink beam is inconsistent is solved, and in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, in the embodiment of the application, before each beam scanning, a group of power deviation values are generated for each downlink beam, and the power deviation values of each downlink beam are informed to the terminal, so that the terminal can calculate the beam quality after compensating the actual transmission power of each downlink beam by using the power deviation values, and the accuracy of beam measurement of the terminal can still not be influenced under the condition that the downlink beams of an access link have different transmission powers.

In one possible design, the determining, by the relay transceiver node, a power offset value corresponding to each beam in the first beam group includes: the relay transceiver node determining a transmit power of each beam in the first beam group; and the relay transceiver node determines a power offset value of each beam in the first beam group according to the transmitting power of one beam in the first beam group.

In one possible design, the sending, by the relay transceiver node, the power offset value corresponding to each resource unit in the first resource group to the terminal includes: the relay transceiver node sends first indication information to the terminal, where the first indication information includes N indication fields, where the N indication fields are used to indicate N power offset values, and an indication field of a power offset value corresponding to each resource unit in the first resource group is included in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1. Therefore, by binding the association relationship of the subset and the indication field of the offset value in advance, the downlink reference signal resource corresponding to each beam of the terminal and what the power offset value corresponding to each downlink reference signal resource is do not need to be explicitly informed, and only the power offset value of the downlink reference signal resource at which position in the N subsets of the terminal needs to be updated and the updated power offset value need to be informed, so that the association relationship can be informed only by the N indication fields, which is beneficial to saving signaling overhead.

In one possible design, the sending, by the relay transceiver node, the power offset value corresponding to each resource unit in the first resource group to the terminal includes: the relay transceiver node sends second indication information to the terminal, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value corresponding to the position index to the terminal; wherein the second indication information is carried in a Radio Resource Control (RRC) signaling, or carried in a MAC-CE signaling, or carried in a DCI signaling.

In one possible design, the determining, by the relay transceiver node, a beam corresponding to each resource unit in the first resource group includes: the relay transceiver node receives first index information from the terminal, wherein the first index information comprises position indexes of resource units associated with one or more beams selected by the terminal from the received management beams; the relay transceiver node determines the beams in the first beam group according to the first index information; the relay transceiver node establishes a correspondence between resource units included in the first resource group and beams in the first beam group.

In one possible design, before the relay transceiver node transmits the beams in the second beam group according to the correspondence between the resource units included in the second resource group and the beams in the second beam group, the method further includes: the relay transceiver node receives second index information from the base station, wherein the second index information comprises position indexes of resource units associated with one or more beams selected by the base station from the received management beams; the relay transceiver node determines the beams in the second beam group according to the second index information; and the relay transceiver node establishes a corresponding relation between the resource units included in the second resource group and the beams in the second beam group.

In one possible design, for a relay transceiver node, after the relay transceiver node transmits beams in the first beam group according to a correspondence between resource units included in the first resource group and beams in the first beam group, the method further includes: the relay receiving and transmitting node receives the position indexes of the resource units corresponding to one or more wave beams selected by the terminal; and the relay transceiver node updates the beams in the first beam group according to the position indexes of the resource units corresponding to the one or more beams selected by the terminal, and establishes the corresponding relation between the resource units included in the first resource group and the updated beams in the first beam group. After the beam scanning process of the relay transceiver node is finished each time, the terminal feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node can update the beams in the first beam group at the next beam scanning according to the feedback information of the terminal.

In one possible design, after the relay transceiver node transmits the beams in the second beam group according to the correspondence between the resource units included in the second resource group and the beams in the second beam group, the method further includes: the relay receiving and transmitting node receives the position indexes of the resource units corresponding to one or more wave beams selected by the base station; and the relay transceiver node updates the beams in the second beam group according to the position indexes of the resource units corresponding to the one or more beams selected by the base station, and establishes the corresponding relationship between the resource units included in the second resource group and the updated beams in the second beam group. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node determines the beams in the second beam group and the transmitting power of each beam in the next beam scanning according to the feedback information of the base station.

For the terminal, the following method flows are also executed in the beam management process of the relay transceiver node:

in one possible design, before the terminal receives beams of the first set of beams from a relay transceiver node using the first set of resources, the method further includes: the terminal sends first index information to the relay transceiver node, wherein the first index information comprises position indexes of resource units associated with one or more beams selected by the terminal from the received management beams.

In one possible design, before the terminal receives beams of the first set of beams from the relay transceiver node using the first set of resources, the method further includes: the terminal receives a power offset value associated with each resource unit in the first resource group from the relay transceiver node;

after the terminal receives beams in the first beam group from the relay transceiver node using the first set of resources, the method further includes: and the terminal selects one or more beams from the first beam group according to the power offset value associated with each resource unit in the first resource group, and sends the position indexes of the resource units associated with the one or more beams selected from the first beam group to the relay transceiver node.

In one possible design, the receiving, by the terminal, a power offset value corresponding to each resource unit in the first resource set from the relay transceiver node includes: the terminal receives first indication information from the relay transceiver node, where the first indication information includes N indication fields, the N indication fields are used to indicate N power offset values, and the indication fields of the power offset values corresponding to each resource unit in the first resource group are included in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1.

In one possible design, the receiving, by the terminal, a power offset value corresponding to each resource unit in the first resource set from the relay transceiver node includes: the terminal receives second indication information from the relay transceiver node, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value corresponding to the position index to the terminal; wherein the second indication information is carried in a Radio Resource Control (RRC) signaling, or carried in a MAC-CE signaling, or carried in a DCI signaling.

In one possible design, the terminal selects one or more beams from the first beam set according to a power offset value associated with each resource unit in the first resource set, including: the terminal acquires the reference signal receiving power of each resource unit in the first resource group; aiming at a first resource unit in the first resource group, wherein the first resource unit is any one resource unit in the first resource group, and the terminal corrects the reference signal receiving power of the first resource unit according to a power offset value associated with the first resource unit to obtain an equivalent reference signal receiving power of the first resource unit; and the terminal selects one or more beams from the first beam group according to the equivalent reference signal received power of each resource unit in the first resource group.

For the base station, the following method flows are also executed in the beam management process of the relay transceiver node:

in one possible design, before the base station receives beams in a second set of beams from a relay transceiver node using the second set of resources, the method further includes: the base station sends second index information to the relay transceiver node, wherein the second index information comprises position indexes of resource units associated with one or more beams selected by the base station from the received management beams.

In one possible design, after the base station receives beams of the second set of beams from the relay transceiver node using the second set of resources, the method further includes: the base station acquires the reference signal receiving power of each resource unit in the second resource group; and the base station selects one or more beams from the received second beam group according to the reference signal received power, and sends the position indexes of the resource units associated with the one or more beams selected from the second beam group to the relay transceiver node.

In a second aspect, the present application provides a relay transceiver node, where the relay transceiver node includes a processor and a communication interface, and the processor is configured to support the relay transceiver node to perform a corresponding function of the relay transceiver node in the foregoing method. The communication interface is used for supporting communication between the relay transceiver node and the terminal and the base station so as to transmit information or instructions related to the method to the base station and the terminal. A memory may also be included in the relay transceiver node for coupling with the processor, which stores program instructions and data necessary for the relay transceiver node.

Specifically, the processor is configured to determine a first resource group and a second resource group, where a resource unit included in the first resource group is used for measuring and selecting a beam in a first beam group between the relay transceiver node and the terminal, and a resource unit included in the second resource group is used for measuring and selecting a beam in a second beam group between the relay transceiver node and the base station; the communication interface is configured to send a beam in the first beam group according to a beam corresponding to each resource unit in the first resource group, and send a beam in the second beam group according to a beam corresponding to each resource unit in the second resource group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of the access link and the backhaul link. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of uplink reference signal resources required by the beam management of the backhaul link and downlink reference signal resources required by the beam management of the access link overlap in time-frequency domain resources, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In a possible design, the determining the first resource group and the second resource group specifically includes: determining a first reference signal resource according to a second reference signal resource such that the first reference signal resource partially overlaps with the second reference signal resource; the first reference signal resource is used for beam management of an access link, and the second reference signal resource is used for beam management of a backhaul link; determining the first resource group according to a first reference signal resource, and determining the second resource group according to a second reference signal resource; wherein the first set of resources is included in the first reference signal resource and the second set of resources is included in the second reference signal resource. And determining a first reference signal resource according to the configuration of a second reference signal resource by the base station, and partially overlapping the first reference signal resource and the second reference signal resource, so that the frequency domain resource is partially overlapped when an uplink reference signal resource required by the beam management of a return link and a downlink reference signal resource required by the beam management of an access link exist.

In one possible design, the processor is further configured to determine, before the communication interface transmits a beam in the first beam group according to a correspondence between a resource unit included in the first resource group and a beam in the first beam group, a power offset value associated with a beam corresponding to each resource unit in the first resource group and each beam in the first beam group; determining a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam; the communication interface is further configured to send a power offset value associated with each resource unit in the first resource group to the terminal. In the embodiment, when a common beam exists in an uplink beam and a downlink beam, and the transmission power of the common beam and a non-common beam in the downlink beam is not consistent, in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, in the embodiment of the present application, before each beam scanning, a set of power offset values is generated for each downlink beam, and the power offset value of each downlink beam is notified to the terminal, each power offset value is associated with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of a relay transceiver node, so that the terminal compensates the actual transmission power of each downlink beam by using the power offset value and then calculates the beam quality, and in the case that the downlink beams of an access link have different transmission powers, the accuracy of the terminal beam measurement is still not affected.

In one possible design, the determining a power offset value associated with each beam in the first beam group specifically includes: determining a transmit power for each beam in the first beam set; determining a power offset value for each beam in the first beam set based on the transmit power of one of the beams in the first beam set.

In a possible design, the sending, to the terminal, the power offset value associated with each resource unit in the first resource group specifically includes: sending first indication information to the terminal, wherein the first indication information comprises N indication fields, the N indication fields are used for indicating N power offset values, and the indication fields of the power offset values associated with each resource unit in the first resource group are contained in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1. By binding the association relationship between the subsets and the indication fields of the offset value in advance, the downlink reference signal resource corresponding to each beam of the terminal and what the power offset value corresponding to each downlink reference signal resource is do not need to be explicitly informed, and the terminal only needs to be informed of which power offset value of the downlink reference signal resource at which position in the N subsets needs to be updated and the updated power offset value, so that the association relationship can be informed only by the N indication fields, which is beneficial to saving signaling overhead.

In a possible design, the sending, to the terminal, the power offset value associated with each resource unit in the first resource group specifically includes: sending second indication information to the terminal, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value associated with the position index to the terminal; wherein the second indication information is carried in a Radio Resource Control (RRC) signaling, or carried in a MAC-CE signaling, or carried in a DCI signaling.

In one possible design, the communication interface is further configured to receive, before transmitting beams in the first beam group according to a correspondence between resource units included in the first resource group and beams in the first beam group, first index information from the terminal, where the first index information includes a position index of a resource unit associated with one or more beams selected by the terminal from among received management beams; the determining a beam corresponding to each resource unit in the first resource group specifically includes: determining beams in the first beam group according to the first index information; and establishing a corresponding relation between the resource units included in the first resource group and the beams in the first beam group. Before triggering beam management, the relay transceiver node establishes an association relationship between a plurality of resource units in a first resource group and power offset values of a plurality of beams in the first beam group, and further associates each power offset value with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of the relay transceiver node, and a terminal performs beam measurement according to the power offset values of the beams.

In one possible design, the communication interface is further configured to receive, before transmitting beams in the second beam group according to a correspondence between resource units included in the second resource group and beams in the second beam group, second index information from the base station, where the second index information includes a position index of a resource unit associated with one or more beams selected by the base station from the received management beams; the processor is further configured to determine, before the communication interface sends the beams in the second beam group, the beams in the second beam group according to the second index information, and establish a correspondence between resource units included in the second resource group and the beams in the second beam group.

In a third aspect, the present application provides a terminal, including a processor and a communication interface, where the processor is configured to support the terminal to perform corresponding functions of the terminal in the above method. The communication interface is used for supporting communication between the terminal and the relay transceiver node so as to transmit information or instructions involved in the above method to the relay transceiver node. The terminal may also include a memory, coupled to the processor, that retains program instructions and data necessary for the terminal.

Specifically, the processor is configured to determine a first resource group configured by a relay transceiver node, where the first resource group is included in the first reference signal resource, and the first reference signal resource is configured by the relay transceiver node for the terminal according to a second reference signal resource, where the first reference signal resource partially overlaps with the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and a resource unit included in the first resource group is used for measurement and selection of a beam in the first beam group between the relay transceiver node and the terminal; the communication interface is configured to receive beams of the first beam group from a relay transceiver node using the first set of resources. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the communication interface is further configured to send, to the relay transceiver node, first index information before receiving, from the relay transceiver node, beams in the first beam group in the first resource group, where the first index information includes a location index of a resource unit associated with one or more beams selected by the terminal from the received management beams. And the relay transceiver node determines a plurality of beams in the first beam group according to the beam information corresponding to the first index information.

In one possible design, the communications interface is further configured to receive a power offset value associated with each resource unit in the first set of resources from the relay transceiver node before receiving a beam in the first set of beams from the relay transceiver node; the processor is further configured to select one or more beams from the first beam group according to a power offset value associated with each resource unit in the first resource group after the communication interface receives the beams in the first beam group from the relay transceiver node; the communication interface is further configured to send, to the relay transceiver node, a location index of a resource unit associated with one or more beams selected by the processor from the first beam group.

In the embodiment, when the uplink beam and the downlink beam share a common beam, the problem that the transmission power of the common beam and the non-common beam in the downlink beam is possibly inconsistent is solved, and in order to avoid that the transmission power in the downlink beam affects the accuracy of beam measurement of the terminal, the terminal receives a power offset value corresponding to a reference signal resource used by each downlink beam sent by the relay transceiver node before each beam scanning, and calculates the beam quality after compensating the actual reception power of each downlink beam by using the power offset value, so that the accuracy of beam measurement of the terminal is still not affected under the condition that the downlink beam of the access link has different transmission powers.

In one possible design, the selecting one or more beams from the first beam group according to the power offset value associated with each resource unit in the first resource group specifically includes: acquiring reference signal receiving power of each resource unit in the first resource group; aiming at a first resource unit in the first resource group, wherein the first resource unit is any one resource unit in the first resource group, and the terminal corrects the reference signal receiving power of the first resource unit according to a power offset value associated with the first resource unit to obtain an equivalent reference signal receiving power of the first resource unit; and selecting one or more beams from the first beam group according to the equivalent reference signal received power of each resource unit in the first resource group. After the beam scanning process of the relay transceiver node is finished each time, the terminal feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node can determine the beam in the first beam group at the next beam scanning according to the feedback information of the terminal.

In one possible design, the receiving, before receiving beams in a first beam set from a relay transceiver node, a power offset value associated with each resource unit in the first resource set from the relay transceiver node specifically includes: receiving first indication information from the relay transceiver node, wherein the first indication information comprises N indication fields, the N indication fields are used for indicating N power offset values, and the indication fields of the power offset values associated with each resource unit in the first resource group are contained in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1. By binding the association relationship between the subsets and the indication fields of the offset value in advance, the downlink reference signal resource corresponding to each beam of the terminal and what the power offset value corresponding to each downlink reference signal resource is do not need to be explicitly informed, and the terminal only needs to be informed of which power offset value of the downlink reference signal resource at which position in the N subsets needs to be updated and the updated power offset value, so that the association relationship can be informed only by the N indication fields, which is beneficial to saving signaling overhead.

In one possible design, the receiving, before receiving beams in a first beam set from a relay transceiver node, a power offset value associated with each resource unit in the first resource set from the relay transceiver node specifically includes: receiving second indication information from the relay transceiver node, where the second indication information is used to indicate, to the terminal, a position index of each resource unit in the first resource group and a power offset value associated with the position index; wherein the second indication information is carried in a Radio Resource Control (RRC) signaling, or carried in a MAC-CE signaling, or carried in a DCI signaling.

In a fourth aspect, the present application provides a base station, comprising a processor and a communication interface, wherein the processor is configured to support the base station to perform corresponding functions of the base station in the above method. The communication interface is used to support communication between the base station and the relay transceiver node to send information or instructions involved in the above method to the relay transceiver node. A memory may also be included in the base station, coupled to the processor, that stores program instructions and data necessary for the base station.

Specifically, the processor is configured to determine a second resource group, where the second resource group is included in a second reference signal resource, where the second reference signal resource partially overlaps with a first reference signal resource, the first reference signal resource is configured for the terminal by the relay transceiver node according to a second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of the backhaul link, and a resource unit included in the second resource group is used for measurement and selection of a beam in a second beam group between the relay transceiver node and the base station; the communication interface is configured to receive beams of the second beam set from the relay transceiver node using the second set of resources. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the communication interface is further configured to send second index information to the relay transceiver node before receiving beams of the second beam set from the relay transceiver node using the second set of resources, the second index information including a location index of a resource unit associated with one or more beams selected by the base station from the received management beams. And the relay transceiver node determines a plurality of beams in the second beam group according to the beam information corresponding to the second index information.

In one possible design, the processor is further configured to obtain the reference signal received power of each resource unit in the second resource group after the communication interface receives the beams in the second beam group from the relay transceiver node using the second resource group; selecting one or more beams from the received second beam group according to the reference signal received power; the communication interface is further configured to send, to the relay transceiver node, a location index of a resource unit associated with the one or more beams selected by the processor from the second beam group. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node determines the beams in the second beam group and the transmitting power of each beam in the next beam scanning according to the feedback information of the base station.

In a fifth aspect, to achieve the above object, the present application provides a circuit system, which includes an interface unit, a control and operation unit, and a storage unit, wherein the interface unit is used for communicating with other components of a base station or a terminal, the storage unit is used for storing computer programs or instructions, and the control and operation unit is used for decoding and executing the computer programs or instructions; these computer programs or instructions when executed are for implementing any possible implementation of the above first aspect or the first aspect performed by a relay transceiver node, or any possible implementation of the above first aspect or the first aspect performed by a terminal, or any possible implementation of the above first aspect or the first aspect performed by a base station.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system provided in the present application;

fig. 2 is a schematic method flow diagram of a beam management method according to the present application;

fig. 3 is a schematic diagram illustrating that an uplink beam and a downlink beam transmitted by a relay transceiver node have a common beam according to the present application;

fig. 4 is a schematic method flow diagram of a beam management method according to the present application;

fig. 5 is a schematic structural diagram of a communication device provided in the present application;

fig. 6 is a schematic structural diagram of a communication device provided in the present application;

fig. 7 is a schematic structural diagram of a circuit system provided in the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings.

The system operation environment of the present application is described below, and the technology described in the present application may be applied to an LTE system, such as an LTE/LTE-a/LTE system, or other wireless communication systems using various wireless access technologies, such as a system using Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier-frequency division multiple access (SC-FDMA), etc., and a subsequent evolution system, such as a fifth generation 5G (which may also be referred to as a New Radio (NR)) system, etc., and may also be extended to similar wireless communication systems, such as a wifi, wimax, and 3-pp related cellular systems.

The beam management method in the embodiment of the application is applied to an IAB application scene in a 5G communication system. Fig. 1 shows a schematic diagram of a 5G communication system. The communication system may include at least one base station (only 1 shown), at least one relay transceiver node (rrtp) and at least one terminal. The communication system shown in fig. 1 may be used in an Access backhaul integrated IAB scenario, where the base station and the relay transceiver node transmit via a wireless backhaul link, and the relay transceiver node transmits via a wireless Access link.

A base station may be a device that can communicate with the terminals. The base station may be any device having a wireless transceiving function. Including but not limited to: a base station NodeB, an evolved node b, a base station in the fifth generation (5G) communication system, a base station or a base station in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The base station may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The base station may also be a base station in a 5G network or a base station in a future evolution network; but also wearable devices or vehicle-mounted devices, etc. The base station may also be a small station, a Transmission Reference Point (TRP), or the like. Although not expressly stated herein.

The terminal is a device with a wireless transceiving function, which can be deployed on land, including indoors or outdoors, held by hands, worn or carried by a vehicle; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. A terminal may also be referred to as a User Equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, a UE device, or the like.

The relay transceiver node may be a device that can communicate with a base station, a terminal, or other relay transceiver node. Including but not limited to: the system comprises a wireless relay node, a wireless backhaul node, a home base station, a wearable device or a vehicle-mounted device, a small station, a transmission node and the like.

It should be noted that the terms "system" and "network" in the embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Compared to LTE systems, 5G NR systems will have a wider spectral range (within GHz). Since the signal is in the high frequency range, the signal will experience greater path loss and signal fading than a low frequency signal, and the signal will also be more severe. Based on this, the NR system can realize signal transmission concentrated in a certain direction by adopting a large-scale multiple-input multiple-output (MIMO) and multi-beam (multi-beam) technology, thereby enhancing the anti-fading capability of the signal. This also allows for the use and deployment of wireless backhaul technologies. The wireless backhaul technology can reduce the network erection and deployment cost by establishing a beam-based wireless link between base stations for data and signaling transmission, and is suitable for the fifth generation mobile communication technology (5)^thgeneration, 5G), indoor transmission, and the like. The access and return integrated technology can share frequency band resources through the access link and the return link to perform same-frequency deployment, so that the utilization efficiency of frequency spectrum can be improved.

New Radio (NR) systems introduce the concept of beam management due to the need to use beams at high frequencies. The beam management refers to a series of operation processes for acquiring and managing downlink and uplink beams of a user by a base station and a user side, and the operation processes comprise beam selection, beam measurement, beam reporting, beam scanning and the like. Beam management is based on a series of reference signals on which the base station or user uses different transmit or receive beams to effect scanning of the beams. The user or the base station performs measurement based on the scanned beam, further performs a beam selection process, and feeds back the selected result.

In the present discussion and conclusion of NR, only the uplink or downlink beam management procedure is involved and is a discussion that is made independently. However, in the IAB scenario, the relay transceiver node may be configured to transmit to the base station and the terminal simultaneously, i.e. the relay transceiver node transmits the backhaul link uplink and the access link downlink simultaneously. Since the beam management process is required in the same manner in the IAB scenario, if uplink and downlink beam management is performed independently, corresponding reference signal resources need to be configured for uplink and downlink beam management, respectively, which will cause waste of time-frequency resources. Meanwhile, if the independent beam management processes are not performed simultaneously, a delay in the completion time of the beam management will also be caused. In addition, because the influence of simultaneous transmission of the backhaul link and the access link is not considered, the beams selected by the base station and the terminal after independent beam management may interfere with each other, thereby affecting the subsequent transmission.

The application provides a beam management method, which is used for solving the problems of extra resource overhead, long beam management time delay and the like which are possibly caused when a relay transceiver node respectively and independently performs beam management of an access link and a return link in an IAB scene. Compared with the prior art, the joint beam management method provided by the application can effectively utilize the shared reference signal resource and beam to complete beam management on the return link and the access link, and can reduce the resource overhead and the total time delay of beam management. As shown in fig. 2, the present application provides a beam management method, which mainly includes the following steps:

step 101, a relay transceiver node determines a first resource group and a second resource group, where a resource unit in the first resource group is used for measuring and selecting a beam in a first beam group between the relay transceiver node and a terminal, and a resource unit in the second resource group is used for measuring and selecting a beam in a second beam group between the relay transceiver node and a base station.

In step 101, the beam in the first beam group is a management beam configured by the relay transceiver node for the access link, and the beam in the second beam group is a management beam configured by the relay transceiver node for the backhaul link.

It should be noted that, in an IAB scenario, for a relay transceiver node, an upper node thereof is a base station, a lower node thereof is a terminal, the relay transceiver node is connected with the base station through a backhaul link, and the relay transceiver node is connected with the terminal through an access link. When the relay transceiver node performs joint management on the beams of the access link and the return link, the beam management of the relay transceiver node on the access link is equal to the downlink beam management, and the beam management of the relay transceiver node on the return link is equal to the uplink beam management.

Step 102, the relay transceiver node sends the beams in the first beam group according to the corresponding relationship between the resource units included in the first resource group and the beams in the first beam group. Accordingly, the terminal receives beams in the first beam group from the relay transceiving node using the first resource group.

103, the relay transceiver node transmits the beams in the second beam group according to the corresponding relationship between the resource units included in the second resource group and the beams in the second beam group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of the access link and the backhaul link. Accordingly, the base station receives beams in the second beam group from the relay transceiver node using the second set of resources.

Step 102 and step 103 do not have a strict sequence, and when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the transmission of the common beam on the same resource units in step 102 and step 103 occurs simultaneously.

The first resource group comprises one or more resource units, the second resource group comprises one or more resource units, and the first resource group and the second resource group can have shared resources or can not have shared resources. The first resource group and the second resource group may be the same or different in different beam scans.

When the resource units included in the first resource group and the resource units included in the second resource group have the same resource unit, the same resource unit includes one or more resource units, the same resource unit refers to a resource unit where the first resource group and the second resource group are overlapped on a time-frequency domain resource, and the resource unit can be a time-frequency resource occupied by sending one beam.

Wherein the relay transceiver node transmits the plurality of downlink beams in the first beam group using the plurality of resource units in the first resource group. The relay transceiver node transmits a plurality of uplink beams in the second beam group using a plurality of resource units in the second resource group. When the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the plurality of downlink beams in the first beam group and the plurality of uplink beams in the second beam group have the same beams, that is, common beams, and the resource units transmitting the common beams may be referred to as common resource units.

For example, as shown in fig. 3, the first resource group includes 4 resource units, the second resource group includes 4 resource units, the first resource group and the second resource group include two shared resource units, the relay transceiver node transmits downlink beam 1, beam 2, beam 3, and beam 4 using the 4 resource units of the first resource group, and the relay transceiver node transmits uplink beam 3, beam 4, beam 5, and beam 6 using the 4 resource units of the second resource group, then beam 3 and beam 4 are shared beams, which can be understood as that the relay transceiver node transmits beam 3 and beam 4 to the terminal and the base station simultaneously.

The downlink beams in the first beam group may be transmitted through the reference signals on the access link, and the uplink beams in the second beam group may be transmitted through the reference signals on the backhaul link, so the first resource group may be downlink reference signal resources in the access link, and the second resource group may be uplink reference signal resources in the backhaul link.

In one possible design, the determining, by the relay transceiver node, a first resource group and a second resource group in step 101 includes:

the relay transceiver node determines a first reference signal resource according to a second reference signal resource so that the first reference signal resource and the second reference signal resource are partially overlapped, the relay transceiver node determines the first resource group according to the first reference signal resource and determines the second resource group according to the second reference signal resource, the first resource group is contained in the first reference signal resource, and the second resource group is contained in the second reference signal resource.

Wherein the first reference signal resource is configured for the terminal by the relay transceiver node and is used for beam management of an access link. The second reference signal resource is configured by the base station for the relay transceiver node and used for beam management of a backhaul link.

Optionally, the first reference signal resource and the second reference signal resource may be configured periodically, non-periodically, or semi-continuously.

The first reference signal resource and the second reference signal resource are partially overlapped, which means that the first reference signal resource and the second reference signal resource can be multiplexed, that is, a reference signal on a backhaul link and a reference signal of an access link have a coincidence part on a time-frequency domain resource, and when the first reference signal resource and the second reference signal resource are in a periodic configuration, a period of the first reference signal resource may be the same as a period of the second reference signal resource.

Alternatively, the reference signal on the backhaul link may be a specific reference signal on the backhaul link, such as a Sounding Reference Signal (SRS). The reference signal on the access link may be a user-specific reference signal, such as a Synchronization Signal Block (SSB), or a channel state information reference signal (CSI-RS).

Based on the method flow, the shared reference signal resource and the shared beam can be effectively utilized to complete the beam management on the return link and the access link, and the resource overhead and the total time delay of the beam management can be reduced.

Based on the above steps 101 to 103, when the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with each other when the uplink reference signal resources required for the beam management of the backhaul link and the downlink reference signal resources required for the beam management of the access link exist, the relay transceiver node can effectively use the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In addition, when the relay transceiver node performs beam management on the backhaul link and the access link independently, because the influence of simultaneous transmission of the backhaul link and the access link is not considered, beams selected by the base station and the terminal after independent beam management may interfere with each other, and influence subsequent transmission. In the above joint beam management method of the application, since the reference signal resources of the uplink beam and the downlink beam are jointly managed by the relay transceiver node, it can be ensured that the beams selected by the base station and the terminal do not affect each other in the joint management process, and therefore, even if the backhaul link and the access link are transmitted simultaneously, the beams selected by the base station and the terminal do not affect each other.

However, when the relay transceiver node performs joint management on the beams of the access link and the backhaul link, the beam powers on the backhaul link may be consistent, and the beam powers on the access link may not be consistent, which may cause a problem that an error in beam selection performed by the terminal based on the measured beam received power is large. In the present application, the relay transceiver node may transmit the power offset value of the beam on the access link to the terminal in advance, thereby solving the above-mentioned problem caused by the inconsistent transmission power of the beam on the access link when the common beam is used.

In one possible design, before step 102, the relay transceiver node generates a set of power offset values for transmitted downlink beams and informs the terminal of the power offset value of each beam, and specifically includes: the relay transceiver node determines a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam in the first beam group; the relay transceiver node determines a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and the power offset value associated with each beam;

and the relay transceiver node sends the power offset value associated with each resource unit in the first resource group to the terminal.

In the embodiment of the application, when a common beam exists between an uplink beam and a downlink beam, the problem that the transmission power possibly encountered by the common beam and a non-common beam in the downlink beam is inconsistent is solved, and in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, in the embodiment of the application, before each beam scanning, a group of power deviation values are generated for each downlink beam, and the power deviation values of each downlink beam are informed to the terminal, so that the terminal can calculate the beam quality after compensating the actual transmission power of each downlink beam by using the power deviation values, and the accuracy of beam measurement of the terminal can still not be influenced under the condition that the downlink beams of an access link have different transmission powers.

It should be noted that the beam management of the relay transceiver node for the access link refers to a multiple beam scanning and reporting process between the relay transceiver node and the terminal, which is implemented by using different transmit/receive beams on a series of reference signal resources, and this process may be repeated for a period of time, so as to determine the optimal used beam. The start of one downlink beam scanning procedure may be triggered by the relay node, for example, after the uplink beam scanning procedure on the backhaul link is triggered by the base station, the relay node may trigger the beam scanning procedure on the access link after the triggered uplink beam scanning procedure. Or may be a configured periodic trigger. The duration of the beam scanning process is the active time of one aperiodic trigger or the active time of a periodic trigger. Before each beam scanning, the relay transceiver node determines the power offset value corresponding to each activated resource unit until the relay transceiver node informs the base station and the terminal that the transmission beam is not changed any more.

Optionally, the determining, by the relay transceiver node, a power offset value corresponding to each beam in the first beam group includes: the relay transceiver node determining a transmit power of each beam in the first beam group; and the relay transceiver node determines a power offset value of each beam in the first beam group according to the transmitting power of one beam in the first beam group.

Specifically, after determining the transmission power of each downlink beam in the first beam group, the power offset value of each downlink beam in the first beam group may be calculated based on a deviation between the transmission power of each downlink beam in the first beam group and a reference, with one of the transmission power values as a reference.

If the beams in the first beam group may be divided into a common beam and a non-common beam, the transmission power of the common beam may be the same as the transmission power of the uplink beam, the transmission powers of the common beam and the non-common beam may not be the same, and the transmission powers of the non-common beam may be the same or may not be the same. The power offset values for the beams in the first beam group are generated by the relay transceiver node based on the uplink or downlink channel measurement results (e.g., generated based on path loss).

Alternatively, the transmission power of one unshared beam may be used as a reference, or the transmission power of one shared beam may be used as a reference, or a preset fixed value may be used as a reference, where the fixed value may be different from the transmission power of the shared beam and the transmission power of the unshared beam.

Optionally, the relay transceiver node determines a power offset value corresponding to each resource unit in the first resource group, that is, establishes an association relationship between the power offset values of the multiple resource units in the first resource group and the multiple beams in the first beam group. Before triggering beam management, the relay transceiver node establishes an association relationship between a plurality of resource units in a first resource group and power offset values of a plurality of beams in the first beam group, and further associates each power offset value with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of the relay transceiver node, and a terminal performs beam measurement according to the power offset values of the beams.

Therefore, the relay transceiver node determines the power offset value corresponding to each resource unit in the first resource group, which may be triggered before the relay transceiver node performs the first beam scanning, where the first resource group is a downlink reference signal resource to be used by the relay transceiver node to perform the first beam scanning, and a beam in the first beam group is a downlink beam to be used by the relay transceiver node to perform the first beam scanning. Or the process may be triggered when the relay transceiver node updates a power offset value corresponding to a downlink reference signal resource required to be used for next beam scanning after completing the beam scanning, where the first resource group is a downlink reference signal resource to be used by the relay transceiver node for the next beam scanning, and a beam in the first beam group is a downlink beam to be used by the relay transceiver node for the next beam scanning. Each time the relay transceiver node completes beam scanning, the relay transceiver node calculates the transmission beam adopted by the relay transceiver node and the power condition to be adopted in the next beam scanning according to the feedback condition sent by the terminal aiming at the last beam scanning, further determines the power deviation value required to be adopted by each beam, and associates the power deviation value with the downlink reference signal resource corresponding to each beam.

It should be noted that, for the downlink reference signal resource that is not activated to be used in the first reference signal resource, the power offset value may not be associated, or the power offset value corresponding to the history of the downlink reference signal resource may not be notified.

Wherein the determining, by the relay transceiver node, a beam corresponding to each resource unit in the first resource group specifically includes:

after determining a first resource group and determining a plurality of beams in the first beam group, the relay transceiver node configures a corresponding relationship between a plurality of resource units in the first resource group and a plurality of beams in the first beam group.

Wherein the determining, by the relay transceiver node, a plurality of beams in the first beam group comprises: the beam in the first beam group may be a wide beam if the relay transceiver node performs the first beam sweep. When the relay transceiver node performs non-initial beam scanning, the terminal may feed back one or more indexes of reference signal resources with better beam quality to the relay transceiver node after the beam scanning process of the relay transceiver node is finished each time, so that the beam in the first beam group may be determined according to the feedback information of the terminal.

Optionally, when the relay transceiver node performs non-primary beam scanning, the determining, by the relay transceiver node, a plurality of beams in the first beam group includes: the relay transceiver node receives first index information from the terminal, the first index information includes position indexes of resource units corresponding to one or more beams selected by the terminal when beam measurement and selection are performed between the terminal and the relay transceiver node last time, and the relay transceiver node determines beams in the first beam group according to the first index information.

Wherein the determining, by the relay transceiver node, the transmit power of each beam in the first beam group comprises: when the relay transceiver node performs the first beam scanning, the transmission power of each beam in the first beam group may be preset; when the relay transceiver node performs non-primary beam scanning, the transmit power of each beam in the first beam group may be adjusted according to feedback of the terminal.

When the common beam is present, the transmit power of the common beam may be configured to be the same as the transmit power of each beam in the second beam group. For example, the transmission power of the uplink beams may be uniform, such as 15mW each, and then the transmission power of the common beam in the first beam group may also be 15mW, and the non-common beam in the first beam group may be 10 mW.

In one possible design, after the relay transceiver node determines the power offset value corresponding to each resource unit in the first resource group, the power offset value may be notified to the terminal in a manner of displaying a notification, or may be notified to the terminal in a manner of implicit notification.

Optionally, the step of implicitly informing, by the relay transceiver node, each used downlink reference signal resource and a new power offset value corresponding to the downlink reference signal resource to the terminal includes: the sending, by the relay transceiver node, a power offset value corresponding to each resource unit in the first resource group to the terminal includes: the relay transceiver node sends first indication information to the terminal, where the first indication information includes N indication fields, where the N indication fields are used to indicate N power offset values, and an indication field of a power offset value corresponding to each resource unit in the first resource group is included in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1. Therefore, by binding the association relationship of the subset and the indication field of the offset value in advance, the downlink reference signal resource corresponding to each beam of the terminal and what the power offset value corresponding to each downlink reference signal resource is do not need to be explicitly informed, and only the power offset value of the downlink reference signal resource at which position in the N subsets of the terminal needs to be updated and the updated power offset value need to be informed, so that the association relationship can be informed only by the N indication fields, which is beneficial to saving signaling overhead.

Specifically, when the relay transceiver node performs downlink reference resource allocation, the relay transceiver node further divides the allocated first reference signal resource into a reserved part and a non-reserved part, and predefines the following rules: if the relay transceiver node uses the reserved reference signal resource, it indicates that the beam on the part of the reference signal resource uses the power offset, and the corresponding power offset value is notified by the relay transceiver node. If the power offset value notified by the relay transceiver node is more than one, the relay transceiver node further divides the reserved reference signal resource into a plurality of subsets. The number of subsets divided is consistent with the number of power offset values that the relay transceiver node can notify at most at the same time.

The updating of the power offset value at the terminal side is performed according to the following method: and when the terminal receives the power deviation value notified by the relay transceiving node, the terminal associates the reserved reference signal resource with the power deviation value for subsequent beam power deviation calculation. And if the notified power deviation value is more than one, the sequence of the power deviation value notified by the relay transceiver node corresponds to the index sequence of the divided reserved reference signal resource subsets. When the terminal receives a plurality of power deviation values, the reference signal resources in the reserved reference signal resource subset of the corresponding index sequence number are associated with the power deviation values according to the positions of the power deviation values in the notification signaling. Further, when the terminal receives the beam on the corresponding reference signal resource, the calculation is performed according to the corresponding power offset value.

Optionally, based on the above rule, the relay transceiver node may divide the reserved portion of the first reference signal resource into N subsets, where the first resource group actually used in one beam scanning is included in the N subsets, the relay transceiver node sorts the N subsets to obtain a sequence number of each subset, and then before each beam scanning, the power offset value corresponding to each subset may be implicitly notified through indication information corresponding to the sequence number of each subset.

In another possible design, a relay transceiver node explicitly informs, through signaling, a terminal of each used downlink reference signal resource and a new power offset value corresponding to the downlink reference signal resource, and specifically, the sending, by the relay transceiver node, a power offset value corresponding to each resource unit in the first resource group to the terminal includes: the relay transceiver node sends second indication information to the terminal, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value corresponding to the position index to the terminal; the second indication information is carried in Radio Resource Control (RRC) signaling, or in medium access control-control element (MAC-CE) signaling, or in Downlink Control Information (DCI) signaling.

In a possible design, before each beam scanning, the relay transceiver node needs to re-determine the beams in the second beam group, which specifically includes: when the relay transceiver node is performing the first beam sweep, the beams in the second beam group may be wide beams. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that when the relay transceiver node performs non-primary beam scanning, the beams in the second beam group can be determined according to the feedback information of the base station.

Optionally, when the relay transceiver node performs non-primary beam scanning, the determining, by the relay transceiver node, a beam in the second beam group includes: the relay transceiver node receives second index information from the base station, the second index information includes position indexes of resource units corresponding to one or more beams selected from received management beams when the base station performs beam measurement and selection between the base station and the relay transceiver node last time, and the relay transceiver node determines the beams in the second beam group according to the second index information. When the relay transceiver node performs the first beam scanning, the transmission power of each beam in the second beam group may be preset to be the same, and when the relay transceiver node performs the non-first beam scanning, the transmission power of each beam in the second beam group may be adjusted according to the feedback of the base station, but the transmission power of each beam may still be kept consistent.

Optionally, the method further includes: when the relay transceiver node determines that the transceiver beam between the relay transceiver node and the terminal does not change any more, the relay transceiver node sends indication information to the terminal, indicates that the beam does not change any more, and stops beam scanning. Optionally, the relay transceiver node may use RRC signaling reconfiguration or use dynamic signaling indication.

Optionally, the method further includes: when the relay transceiver node determines that the transceiver beam between the relay transceiver node and the base station is not changed any more, request information is sent to the base station, the request beam is not changed any more, and beam scanning is stopped. Optionally, the relay transceiver node may send the stop request through a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH).

For the terminal side, when the relay transceiver node transmits a beam to the terminal on a series of reference signal resources, the terminal receives the transmission beam from the relay transceiver node on the series of reference signal resources. Specifically, the method comprises the following steps: the terminal determines a first resource group configured by the relay transceiving node, the terminal receives beams in a first beam group from the relay transceiving node by using the first resource group, and resource units in the first resource group are used for measuring and selecting the beams between the relay transceiving node and the terminal. The terminal measures and selects the transmission beam in the beam scanning process triggered by the relay transceiver node, and a plurality of resource units in the first resource group used by the terminal can correspond to a plurality of received beams in the first beam group one by one. The first resource group is included in a first reference signal resource, the first reference signal resource is configured for the terminal by the relay transceiver node according to a second reference signal resource, and the first reference signal resource is partially overlapped with the second reference signal resource, where the first reference signal resource is used for beam management of an access link and the second reference signal resource is used for beam management of a backhaul link. The terminal may determine the first set of resources based on indication signaling of the relay transceiver node.

For the terminal, the following method flows are also executed in the beam management method flow of the relay transceiver node:

in one possible design, before the terminal receives beams in the first beam group from the relay transceiver node using the first set of resources, the method further includes: the terminal sends first index information to the relay transceiver node, where the first index information includes a position index of a resource unit corresponding to one or more beams selected from received management beams when the terminal performs beam measurement and selection between the terminal and the relay transceiver node last time, so that the relay transceiver node determines multiple beams in the first beam group according to beam information corresponding to the first index information. Optionally, the terminal may carry the first index information in a PUCCH or a PUSCH and send the first index information to the relay transceiver node.

In one possible design, the method further includes: the terminal receives a power offset value corresponding to each resource unit in the first resource group from the relay transceiving node; after receiving the beams in the first beam group from the relay transceiver node, the terminal selects one or more beams from the first beam group according to the power offset value corresponding to each resource unit in the first resource group, and sends the position indexes of the resource units corresponding to the selected one or more beams to the relay transceiver node. In the embodiment of the application, when a common beam exists between an uplink beam and a downlink beam, the problem that the transmission power of the common beam and the transmission power of a non-common beam possibly exist in the downlink beam are inconsistent is solved, and in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, before each beam scanning, the terminal receives a power offset value corresponding to a reference signal resource used by each downlink beam sent by a relay transceiver node, compensates the actual reception power of each downlink beam by using the power offset value, and then calculates the beam quality, so that the accuracy of the beam measurement of the terminal is still not influenced under the condition that the downlink beams of an access link have different transmission powers.

In one possible design, the selecting, by the terminal, one or more beams from the first beam group according to a power offset value corresponding to each resource unit in the first resource group includes: the terminal acquires the reference signal receiving power of each resource unit in the first resource group; aiming at a first resource unit in the first resource group, wherein the first resource unit is any one resource unit in the first resource group, and the terminal corrects the reference signal receiving power of the first resource unit according to a power offset value associated with the first resource unit to obtain an equivalent reference signal receiving power of the first resource unit; and the terminal selects one or more beams from the first beam group according to the equivalent reference signal received power of each resource unit in the first resource group.

After the beam scanning process of the relay transceiver node is finished each time, the terminal feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node can determine the beam in the first beam group at the next beam scanning according to the feedback information of the terminal. Specifically, after beam measurement is completed on the downlink reference signal resource of the terminal, one or a group of reference signal resources are selected, and the index sequence number of the corresponding reference signal resource is fed back to the relay transceiver node. The selected criterion may be based on the measured Reference Signal Received Power (RSRP) on each reference signal resource. After the terminal obtains the power offset value corresponding to the reference signal resource used by each downlink beam, the terminal can add the corresponding power offset value to the actually measured RSRP to calculate the equivalent RSRP on the reference signal resource, thereby ensuring the accuracy of beam measurement.

In one possible design, the receiving, by the terminal, a power offset value corresponding to each resource unit in the first resource set from the relay transceiver node includes: the terminal receives first indication information from the relay transceiver node, where the first indication information includes N indication fields, the N indication fields are used to indicate N power offset values, and the indication fields of the power offset values corresponding to each resource unit in the first resource group are included in the N indication fields; wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1. Therefore, by binding the association relationship of the subset and the indication field of the offset value in advance, the downlink reference signal resource corresponding to each beam of the terminal and what the power offset value corresponding to each downlink reference signal resource is do not need to be explicitly informed, and only the power offset value of the downlink reference signal resource at which position in the N subsets of the terminal needs to be updated and the updated power offset value need to be informed, so that the association relationship can be informed only by the N indication fields, which is beneficial to saving signaling overhead.

For the base station side, when the relay transceiver node transmits an uplink beam to the base station on a series of reference signal resources, the base station receives the transmission beam from the relay transceiver node on a series of reference signal resources. Specifically, the method comprises the following steps: and the base station determines a second resource group, and the base station receives beams in a second beam group from the relay transceiver node by using the second resource group, wherein resource units in the second resource group are used for measuring and selecting the beams between the relay transceiver node and the terminal. And the base station measures and selects the transmission beam in the beam scanning process triggered by the relay transceiver node, and a plurality of resource units in a second resource group used by the base station correspond to a plurality of received beams in the second beam group one by one. Wherein the second set of resources is included in a second reference signal resource used for beam management of the backhaul link. Since the first resource group is included in the first reference signal resource, the base station may perform monitoring at the first reference signal resource location to obtain the second resource group occupied by the relay transceiver node for transmitting the beams in the second beam group. In some possible embodiments, the second resource group occupied by the beam in the second beam group transmitted by the relay transceiver node may also be fed back to the base station by the relay transceiver node.

For the base station, the following method flows are also executed in the beam management method flow of the relay transceiver node:

in one possible design, before the base station receives beams of the second set of beams from the relay transceiver node using the second set of resources, the method further includes: the base station sends second index information to the relay transceiver node, where the second index information includes position indexes of resource units corresponding to one or more beams selected from received management beams when the base station performs beam measurement and selection between the base station and the relay transceiver node last time, so that the relay transceiver node determines multiple beams in the second beam group according to the beam information corresponding to the second index information. Optionally, the base station may carry the second index information in a physical downlink shared channel (PUSCH) or a Physical Uplink Control Channel (PUCCH), and send the second index information to the relay transceiver node.

In one possible design, the method further includes: the base station acquires the reference signal receiving power of each resource unit in the second resource group; and the base station selects one or more beams from the second beam group according to the reference signal receiving power, and sends the position indexes of the resource units corresponding to the one or more beams selected by the base station to the relay transceiver node. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node determines the beams in the second beam group and the transmitting power of each beam in the next beam scanning according to the feedback information of the base station. Specifically, after completing measurement on the uplink reference signal resource, the base station selects one or a group of reference signal resources and feeds back the index sequence number of the corresponding reference signal resource to the relay transceiver node. The chosen principle may be based on the measured RSRP on each reference signal resource.

Based on the above method flow, taking as an example that the beam of the downlink access link has different transmit powers, the beam of the uplink backhaul link has the same power, and the beam of the downlink access link and the beam of the uplink backhaul link have a common beam, an embodiment of the present application provides a method flow of a beam management method, as shown in fig. 4, which mainly includes the following steps:

step 1: and the relay transceiver node configures a group of reference signal resources of the access link for the terminal according to the reference signal resources of the group of return links configured for the relay transceiver node by the base station.

The configuration mode has the following two conditions:

in the first case: if the bandwidth of the backhaul link is less than or equal to the bandwidth of the access link, the reference signal resource of the access link comprises the reference signal resource of the backhaul link.

In the second case: if the bandwidth of the backhaul link is greater than the bandwidth of the access link, the reference signal resource of the access link is included in the reference signal resource of the backhaul link.

Step 2: for convenience of description, the activated reference signal resources for the downlink beam management are a first resource group, and the activated reference signal resources for the uplink beam management are a second resource group.

And step 3: the relay transceiver node configures a power offset value for each reference signal resource in the first resource group, and notifies the terminal of the power offset value corresponding to each reference signal resource.

For example, the first resource group includes N reference signal resources for carrying N reference signals, the N reference signals are used for transmitting N downlink beams, and the relay transceiver node configures a set of power offset values { Δ P₁,...,ΔP_N) Where N is the number of configured power offset values (which may be the same or different). Each power offset value is associated with a reference signal resource for the access link from among a set of reference signal resources for the access link, i.e., a transmit beam using the Reference Signal (RS) resource will have a corresponding power offset. Meanwhile, the association relationship between each power offset value and a reference signal resource for the access link is configured through RRC signaling or notified through MAC CE signaling, and the association relationship is notified to the terminal.

And 4, step 4: the relay transceiving node scans a first beam group on a first resource group of an access link, scans a second beam group on a second resource group of a backhaul link, and simultaneously, the terminal scans the first beam group on the first resource group of the access link and the base station scans the second beam group on the second resource group of the backhaul link. When the first resource group and the second resource group have shared resources, the first beam group and the second beam group have shared beams, and the relay transceiver node scans the shared beams on the shared resources.

The RS resources used by the common beam on the backhaul link and the access link are the same, that is, the RS resources of the access link activated by the relay transceiver node and the RS resources of the backhaul link activated by the base station are the same in time, frequency, and periodicity.

When the terminal receives a transmission beam of a relay transceiver node, the equivalent reference signal received power of each reference signal (which can also be understood as a beam) is calculated according to an access link RS resource corresponding to the beam and a corresponding power offset value thereof.

It is calculated in the manner of

Wherein

Equivalent reference signal received power, RSRP, measured for the ith reference signal resource by the terminal_iActual reference signal received power, Δ P, measured for the ith reference signal resource by the terminal_iAnd the power offset value corresponding to the ith reference signal resource.

And after the terminal finishes the beam measurement and calculation on the access link, the terminal selects a beam according to a certain rule, for example, selects a beam with the maximum equivalent RSRP, and then feeds back a corresponding reference signal resource index sequence number to the relay transceiver node. After the base station completes the beam measurement on the return link, a reference signal resource index sequence number of the return link is selected similarly and fed back to the relay transceiving node.

And 5: and after receiving the feedback of the base station and the terminal, the relay transceiver node updates the wave beams in the first wave beam group and the wave beams in the second wave beam group and updates the power deviation value corresponding to each reference signal resource.

For the beams which need to be updated, the relay transceiver node associates the power offset value of each updated beam with the RS resource of one access link, and notifies the terminal of the association relationship between each new power offset value and the RS resource of each access link through signaling, where the signaling may be RRC, MAC-CE, or DCI signaling.

The updating method is equivalent to updating the corresponding power offset value for each access link RS resource to be used. In the next beam scanning, if there is a common beam with the uplink beam, and some beams are power-shifted with respect to other downlink beams, these beams will be used on the corresponding RS resources. If the power of all downlink beams is consistent (i.e. there is no common beam with the uplink beam, and the power of all downlink beams may be the same), all beams may be used on the RS resource without associated power offset, or all beams may use the RS resource with power offset of 0.

Step 6: and judging whether the transmitted uplink beam and the downlink beam are not changed any more, if so, executing the step 7, otherwise, returning to the step 3, and repeating the steps 3 to 5 until the relay transceiver node does not trigger the transmitted beam to scan any more.

Wherein the beam scanning of repeating steps 3 to 5 is realized by the periodic occurrence or the non-periodic activation of the RS resource. For example, whether beam scanning is performed or not is indicated by configuring the repetition field in the RS resource IE to be on or off.

And 7: the relay transceiver node informs the base station and the terminal that the transmit beam is no longer changing, for example using RRC signaling reconfiguration or using dynamic signaling indications.

For example, the relay transceiver node reconfigures and modifies a repetition field to "ON" in an access link RS resource Information Element (IE) IE through RRC signaling; and simultaneously, the base station is requested to modify the repeption domain of the RS resource of the return link to be 'ON'. Meaning that the beams on each reference signal resource are the same beam.

Through the steps 1 to 7, the beam management process can be realized by using the same reference signal resource and beam for the return link and the access link, the beam management efficiency is improved, and the resource overhead required by the beam management is saved. Compared with the independent beam management process of the backhaul link and the access link, the combined beam management of the backhaul link and the access link can be realized. Meanwhile, by using the power offset value, the accuracy of beam measurement can still not be influenced under the condition that the beams of the access link have different transmission powers.

As an alternative, the above step 2 may be replaced by: the method comprises the steps of dividing the first reference signal resource into a reserved part and a non-reserved part, dividing the reserved part into N subsets, wherein the N subsets are used for beam management of the access link, the subsets are mutually exclusive, namely, no public part exists, and informing the terminal of the division result of the subsets, namely, each terminal knows which subset the RS resource of each access link belongs to. The notification of the subset partitioning result may be performed synchronously with the configuration of the RS resources of the access link in step 1, i.e. at the end of the configuration of the RS resources of the access link, the partitioning of the subset is already determined.

In step 4, when the terminal receives a transmission beam on a reference signal resource of a certain access link, the equivalent RSRP is calculated according to the subset number to which the reference signal resource belongs and the power offset value corresponding to the subset number.

The step 5 can be replaced by: and after receiving the feedback of the base station and the terminal, the relay transceiver node updates the beams in the first beam group and the beams in the second beam group and updates the power deviation values corresponding to the N subsets.

Based on the result measured in step 4, the relay transceiver node determines that the power offset values of K (K is less than or equal to N) beams will change, and then the relay transceiver node notifies the power offset values of the K beams to the terminal through signaling such as RRC, MAC-CE, DCI, or the like, where the K power offset values have a certain arrangement order, each power offset value corresponds to an RS resource subset of a pre-divided access link, and the position arrangement of each power offset value occurring in the signaling has a corresponding relationship with the index sequence number of the RS resource subset of the access link. For example, in MAC-CE signaling, the K power offset values have a certain ordering in the signaling. Thus, the power offset value occurring at position 1 is associated with the RS resource subset of the access link with sequence number 1.

In the alternative scheme, the same reference signal resource and beam are used for the beam management process of the return link and the access link, so that the beam management efficiency is improved, and the resource overhead required by the beam management is saved. The incidence relation between the power deviation value and the reference signal resource is updated in an implicit updating mode, and signaling overhead can be saved.

In another alternative, in step 5, according to feedback conditions of the base station and the terminal, when it is found that the next beam scanning process does not have the common beam, the transmission power of the downlink beam in the next beam scanning process is the same, and when the power offset value does not need to be updated, one way is to still update the power offset value corresponding to each reference signal resource, and only update the power offset value to 0. Another way is to replace step 2 above with: and the relay transceiving node activates a second resource group for uplink beam management and activates a third resource group for downlink beam management, wherein the third resource group of the second resource group and the second resource group have no shared resource.

Step 3 above is omitted and step 4 above may be replaced with: the relay transceiving node scans the first beam group on the third resource group of the access link, scans the second beam group on the second resource group of the backhaul link, and simultaneously, the terminal scans the first beam group on the third resource group of the access link, and the base station scans the second beam group on the second resource group of the backhaul link. Wherein the first beam group and the second beam group do not share a beam.

The step 5 can be replaced by: and after receiving the feedback of the base station and the terminal, the relay transceiver node updates the beams in the first beam group and the beams in the second beam group, adjusts the transmitting power of the beams in the first beam group and adjusts the transmitting power of each beam in the second beam group. The uplink and downlink beam management processes in step 5 non-IAB scenarios at this time are similar.

This embodiment is not limited to the case where there is no common beam after only one common beam scan. The above alternative steps 4 and 5 may be started when it is found from the feedback result that there is no common beam.

In the above alternative embodiment, when the condition of using the common beam is not satisfied, the joint beam management procedure may fall back to the independent uplink or downlink beam management procedure, and may be performed in compliance with the existing uplink or downlink beam management procedure.

Based on the same inventive concept, as shown in fig. 5, an apparatus 20 provided in the embodiments of the present application includes at least one processor 21, a communication bus 22, a memory 23, and at least one communication interface 24.

Illustratively, the relay transceiver node in fig. 1 may also be the apparatus 20 shown in fig. 3. The apparatus 20 may implement, by the processor 21, the steps related to the relay transceiver node in the communication method in the embodiment of the present application.

Specifically, the processor 21 is configured to determine a first resource group and a second resource group, where a resource unit included in the first resource group is used to measure and select a beam in a first beam group between the relay transceiver node and the terminal, and a resource unit included in the second resource group is used to measure and select a beam in a second beam group between the relay transceiver node and the base station; the communication interface 24 is configured to send a beam in the first beam group according to a beam corresponding to each resource unit in the first resource group, and send a beam in the second beam group according to a beam corresponding to each resource unit in the second resource group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of the access link and the backhaul link. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of uplink reference signal resources required by the beam management of the backhaul link and downlink reference signal resources required by the beam management of the access link overlap in time-frequency domain resources, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the processor 21 is further configured to determine, before the communication interface 24 sends the beams in the first beam group according to the correspondence between the resource units included in the first resource group and the beams in the first beam group, a power offset value associated with each beam in the first beam group and a beam corresponding to each resource unit in the first resource group; determining a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam; the communication interface 24 is further configured to send the power offset value associated with each resource unit in the first resource group to the terminal. In the embodiment, when a common beam exists in an uplink beam and a downlink beam, and the transmission power of the common beam and a non-common beam in the downlink beam is not consistent, in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, in the embodiment of the present application, before each beam scanning, a set of power offset values is generated for each downlink beam, and the power offset value of each downlink beam is notified to the terminal, each power offset value is associated with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of a relay transceiver node, so that the terminal compensates the actual transmission power of each downlink beam by using the power offset value and then calculates the beam quality, and in the case that the downlink beams of an access link have different transmission powers, the accuracy of the terminal beam measurement is still not affected.

In one possible design, the communication interface 24 is further configured to receive, before transmitting beams in the first beam group according to the correspondence between the resource units included in the first resource group and the beams in the first beam group, first index information from the terminal, where the first index information includes a position index of a resource unit associated with one or more beams selected by the terminal from the received management beams; the determining a beam corresponding to each resource unit in the first resource group specifically includes: determining beams in the first beam group according to the first index information; and establishing a corresponding relation between the resource units included in the first resource group and the beams in the first beam group. Before triggering beam management, the relay transceiver node establishes an association relationship between a plurality of resource units in a first resource group and power offset values of a plurality of beams in the first beam group, and further associates each power offset value with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of the relay transceiver node, and a terminal performs beam measurement according to the power offset values of the beams.

In one possible design, the communication interface 24 is further configured to receive, before transmitting beams in the second beam group according to the correspondence between the resource units included in the second resource group and the beams in the second beam group, second index information from the base station, where the second index information includes a position index of a resource unit associated with one or more beams selected by the base station from the received management beams; the processor 21 is further configured to, before the communication interface 24 sends the beams in the second beam group, determine the beams in the second beam group according to the second index information, and establish a correspondence between the resource units included in the second resource group and the beams in the second beam group.

Illustratively, the terminal in fig. 1 may also be the apparatus 20 shown in fig. 5. The apparatus 20 may implement, by the processor 2121, the steps related to the terminal in the communication method in the embodiment of the present application.

Specifically, the processor 21 is configured to determine a first resource group configured by a relay transceiver node, where the first resource group is included in the first reference signal resource, and the first reference signal resource is configured by the relay transceiver node for the terminal according to a second reference signal resource, where the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and the first resource group includes resource units used for measurement and selection of beams in a first beam group between the relay transceiver node and the terminal; the communication interface 24 is configured to receive beams of the first beam group from a relay transceiver node using the first resource group. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the communication interface 24 is further configured to send, to the relay transceiver node, first index information before receiving, from the relay transceiver node, beams in the first beam group in the first resource group, where the first index information includes a location index of a resource unit associated with one or more beams selected by the terminal from the received management beams. And the relay transceiver node determines a plurality of beams in the first beam group according to the beam information corresponding to the first index information.

In one possible design, the communication interface 24 is further configured to receive a power offset value associated with each resource unit in the first set of resources from the relay transceiver node before receiving a beam in the first set of beams from the relay transceiver node; the processor 21 is further configured to select one or more beams from the first beam group according to the power offset value associated with each resource unit in the first resource group after the communication interface 24 receives the beams in the first beam group from the relay transceiver node; the communication interface 24 is further configured to send, to the relay transceiver node, a location index of a resource unit associated with one or more beams selected by the processor 21 from the first beam group.

For example, the base station in fig. 1 may also be the apparatus 20 shown in fig. 5, and the apparatus 20 may implement, by using the processor 2121, the steps related to the base station in the communication method in the embodiment of the present application.

Specifically, the processor 21 is configured to determine a second resource group, where the second resource group is included in a second reference signal resource, where the second reference signal resource partially overlaps with a first reference signal resource, the first reference signal resource is configured by the relay transceiver node for the terminal according to the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of the backhaul link, and a resource unit included in the second resource group is used for measurement and selection of a beam in the second beam group between the relay transceiver node and the base station; the communication interface 24 is configured to receive beams of the second beam group from the relay transceiver node using the second resource group. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the communication interface 24 is further configured to send second index information to the relay transceiver node before receiving beams in the second beam set from the relay transceiver node using the second resource set, the second index information including a location index of resource units associated with one or more beams selected by the base station from the received management beams. And the relay transceiver node determines a plurality of beams in the second beam group according to the beam information corresponding to the second index information.

In one possible design, the processor 21 is further configured to, after the communication interface 24 receives beams in the second beam set from the relay transceiver node using the second resource set, obtain reference signal received power of each resource unit in the second resource set; selecting one or more beams from the received second beam group according to the reference signal received power; the communication interface 24 is further configured to send, to the relay transceiver node, a location index of a resource unit associated with the one or more beams selected by the processor 21 from the second beam group. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node determines the beams in the second beam group and the transmitting power of each beam in the next beam scanning according to the feedback information of the base station.

The processor 21 may be a general purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present application.

Communication bus 22 may include a path that transfers information between the aforementioned components. The communication interface 24 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet network, a Radio Access Network (RAN), a wlan, etc.

The memory 23 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by the apparatus. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.

The memory 23 is used for storing application program codes for executing the scheme of the application, and is controlled by the processor 21 to execute. The processor 21 is configured to execute application program code stored in the memory 23.

In particular implementations, processor 21 may include one or more CPUs such as CPU0 and CPU1 in fig. 5, for example, as one embodiment.

In particular implementations, the apparatus 20 may include a plurality of processors, such as the processor 21 and the processor 28 in fig. 5, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In the embodiment of the present application, the functional modules of the apparatus shown in fig. 5 may be divided according to the above method example, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the present embodiment, the apparatus shown in fig. 5 is presented in a form of dividing each functional module corresponding to each function, or the apparatus is presented in a form of dividing each functional module in an integrated manner. A "module" as used herein may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that provide the described functionality.

For example, in the case of dividing each functional module by corresponding functions, fig. 6 shows a possible structural schematic diagram of the apparatus involved in the foregoing embodiment, and the apparatus 900 may be a relay transceiver node or a terminal or a base station in the foregoing embodiment. The apparatus 900 comprises a processing unit 901 and a transceiving unit 902. The transceiver unit 902 is used for the processing unit 901 to transmit and receive signals. The method executed by the processing unit 901 in fig. 6 may be implemented by the processor 21 (and/or the processor 28) and the memory 23 in fig. 5, and specifically, the method executed by the processing unit 901 may be executed by the processor 21 (and/or the processor 28) in fig. 5 to call the application program code stored in the memory 23, which is not limited in this embodiment.

In a specific implementation, when the apparatus 900 may be a relay transceiver node in the foregoing embodiment, the processing unit 901 is configured to determine a first resource group and a second resource group, where a resource unit included in the first resource group is used to perform measurement and selection of a beam in a first beam group between the relay transceiver node and a terminal, and a resource unit included in the second resource group is used to perform measurement and selection of a beam in a second beam group between the relay transceiver node and a base station; the transceiver 902 is configured to send a beam in the first beam group according to a beam corresponding to each resource unit in the first resource group, and send a beam in the second beam group according to a beam corresponding to each resource unit in the second resource group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of the access link and the backhaul link. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of uplink reference signal resources required by the beam management of the backhaul link and downlink reference signal resources required by the beam management of the access link overlap in time-frequency domain resources, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In a possible design, the processing unit 901 is further configured to determine, before the transceiving unit 902 sends a beam in the first beam group according to a correspondence between a resource unit included in the first resource group and a beam in the first beam group, a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam in the first beam group; determining a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam; the transceiving unit 902 is further configured to send a power offset value associated with each resource unit in the first resource group to the terminal. In the embodiment, when a common beam exists in an uplink beam and a downlink beam, and the transmission power of the common beam and a non-common beam in the downlink beam is not consistent, in order to avoid the influence of the transmission power in the downlink beam on the accuracy of beam measurement of a terminal, in the embodiment of the present application, before each beam scanning, a set of power offset values is generated for each downlink beam, and the power offset value of each downlink beam is notified to the terminal, each power offset value is associated with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of a relay transceiver node, so that the terminal compensates the actual transmission power of each downlink beam by using the power offset value and then calculates the beam quality, and in the case that the downlink beams of an access link have different transmission powers, the accuracy of the terminal beam measurement is still not affected.

In a possible design, the transceiver unit 902 is further configured to receive, before transmitting beams in the first beam group according to a correspondence between resource units included in the first resource group and beams in the first beam group, first index information from the terminal, where the first index information includes a position index of a resource unit associated with one or more beams selected by the terminal from received management beams; the determining a beam corresponding to each resource unit in the first resource group specifically includes: determining beams in the first beam group according to the first index information; and establishing a corresponding relation between the resource units included in the first resource group and the beams in the first beam group. Before triggering beam management, the relay transceiver node establishes an association relationship between a plurality of resource units in a first resource group and power offset values of a plurality of beams in the first beam group, and further associates each power offset value with a downlink reference signal resource, so that a beam using the downlink reference signal resource performs corresponding power offset on the basis of a preset transmission power of the relay transceiver node, and a terminal performs beam measurement according to the power offset values of the beams.

In a possible design, the transceiver unit 902 is further configured to receive second index information from the base station before transmitting beams in the second beam group according to a correspondence between resource units included in the second resource group and beams in the second beam group, where the second index information includes a location index of resource units associated with one or more beams selected by the base station from received management beams; the processing unit 901 is further configured to, before the transceiver unit 902 sends the beams in the second beam group, determine the beams in the second beam group according to the second index information, and establish a correspondence between the resource units included in the second resource group and the beams in the second beam group.

In a specific implementation, when the apparatus 900 may be a terminal in the foregoing embodiment, the processing unit 901 is configured to determine a first resource group configured by a relay transceiver node, where the first resource group is included in the first reference signal resource, and the first reference signal resource is configured by the relay transceiver node for the terminal according to a second reference signal resource, where the first reference signal resource partially overlaps with the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and the first resource group includes a resource unit used for measuring and selecting a beam in a first beam group between the relay transceiver node and the terminal; the transceiving unit 902 is configured to receive beams in the first beam group from a relay transceiving node using the first resource group. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the transceiver unit 902 is further configured to send, to the relay transceiver node, first index information before receiving, from the relay transceiver node, beams in the first beam group in the first resource group, where the first index information includes a location index of a resource unit associated with one or more beams selected by the terminal from the received management beams. And the relay transceiver node determines a plurality of beams in the first beam group according to the beam information corresponding to the first index information.

In one possible design, the transceiver unit 902 is further configured to receive a power offset value associated with each resource unit in the first set of resources from the relay transceiver node before receiving a beam in the first set of beams from the relay transceiver node; the processing unit 901 is further configured to, after the transceiver unit 902 receives the beams in the first beam group from the relay transceiver node, select one or more beams from the first beam group according to a power offset value associated with each resource unit in the first resource group; the transceiver unit 902 is further configured to send, to the relay transceiver node, a location index of a resource unit associated with one or more beams selected by the processing unit 901 from the first beam group.

In a specific implementation, when the apparatus 900 may be a base station in the foregoing embodiment, the processing unit 901 is configured to determine a second resource group, where the second resource group is included in a second reference signal resource, where the second reference signal resource is partially overlapped with a first reference signal resource, the first reference signal resource is configured by the relay transceiver node for the terminal according to the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of the backhaul link, and a resource unit included in the second resource group is used for measurement and selection of beams in a second beam group between the relay transceiver node and the base station; the transceiver unit 902 is configured to receive, by using the second resource group, beams in the second beam group from the relay transceiver node. When the relay transceiver node performs the joint beam management of the backhaul link and the access link, if a part of the frequency domain resources coincide with the existence of the second reference signal resources required by the beam management of the backhaul link and the first reference signal resources required by the beam management of the access link, the relay transceiver node can effectively utilize the shared reference signal resources and beams to complete a part of beam management on the backhaul link and the access link, which is beneficial to reducing the resource overhead of the part of beam management and reducing the total delay of the whole beam management process.

In one possible design, the transceiver unit 902 is further configured to send, to the relay transceiver node, second index information before receiving beams in the second beam group from the relay transceiver node using the second resource group, where the second index information includes a location index of a resource unit associated with one or more beams selected by the base station from the received management beams. And the relay transceiver node determines a plurality of beams in the second beam group according to the beam information corresponding to the second index information.

In a possible design, the processing unit 901 is further configured to, after the transceiving unit 902 receives beams in the second beam group from the relay transceiving node using the second resource group, obtain reference signal received power of each resource unit in the second resource group; selecting one or more beams from the received second beam group according to the reference signal received power; the transceiver unit 902 is further configured to send, to the relay transceiver node, a location index of a resource unit associated with the one or more beams selected by the processing unit 901 from the second beam group. After the beam scanning process of each relay transceiver node is finished, the base station feeds back one or more indexes of the reference signal resources with better beam quality to the relay transceiver node, so that the relay transceiver node determines the beams in the second beam group and the transmitting power of each beam in the next beam scanning according to the feedback information of the base station.

The specific implementation manner and the advantageous effects of the above device embodiment correspond to those of the method embodiment, and the related descriptions of the participating method embodiments are provided.

Fig. 7 is another structural diagram of the circuit system according to the embodiment of the invention. The circuitry may be a processor. The processor may be embodied as a chip or a System On Chip (SOC) and is disposed in a base station or a terminal of a wireless communication system according to an embodiment of the present invention, so that the base station or the terminal implements a communication method according to an embodiment of the present invention. As shown in fig. 6, the circuitry 60 includes: an interface unit 601, a control and arithmetic unit 602, and a storage unit 603. Wherein the interface unit is adapted to communicate with other components of the base station or the terminal, the storage unit 603 is adapted to store computer programs or instructions, and the control and arithmetic unit 602 is adapted to decode and execute these computer programs or instructions. It will be appreciated that these computer programs or instructions may include the terminal functionality described above, as well as the base station functionality described above. When the terminal function program is decoded and executed by the control and operation unit 602, the terminal can implement the method for indicating the uplink sub-band precoding matrix and the function of the terminal according to the embodiment of the present invention. When the base station function program is decoded and executed by the control and operation unit 602, the base station can implement the function of the base station in the method for indicating the uplink sub-band precoding matrix according to the embodiment of the present invention.

In one possible design, these terminal or base station functions are stored in memory external to circuitry 60. When the terminal function program or the base station function program is decoded and executed by the control and arithmetic unit 602, the storage unit 603 temporarily stores part or all of the contents of the terminal function program or part or all of the contents of the base station function program.

In an alternative implementation, these terminal or base station functions are provided in a memory unit 603 stored within the circuitry 60. When the terminal function program is stored in the storage unit 603 inside the circuit system 60, the circuit system 60 can be provided in the terminal of the wireless communication system of the embodiment of the present invention. When the base station function program is stored in the storage unit 603 inside the circuit system 60, the circuit system 60 can be provided in the base station of the wireless communication system of the embodiment of the present invention.

In yet another alternative implementation, the contents of some of these terminal or base station functions are stored in memory external to circuitry 60, and the contents of other parts of these terminal or base station functions are stored in memory unit 603 internal to circuitry 60.

Based on the same concept, the present application provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method steps related to a relay transceiver node in the various embodiments to which the present application relates.

Based on the same idea, the present application provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method steps related to the terminal in the various embodiments to which the present application relates.

Based on the same concept, the present application provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method steps related to the base station in the various embodiments to which the present application relates.

Based on the same idea, the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method steps related to a relay transceiver node in the various embodiments to which the present application relates.

Based on the same idea, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method steps related to the terminal in the various embodiments to which the present application relates.

Based on the same idea, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method steps related to the base station in the various embodiments to which the present application relates.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

It is clearly understood by those skilled in the art that the descriptions of the embodiments of the present invention may be referred to each other, and for convenience and brevity of description, the functions and the steps of the apparatuses and the devices provided by the embodiments of the present invention may be referred to the relevant descriptions of the method embodiments of the present invention, which are not repeated herein.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus (device), or computer program product. Accordingly, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects that may all generally be referred to herein as a "module" or "system. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. A computer program stored/distributed on a suitable medium supplied together with or as part of other hardware, may also take other distributed forms, such as via the Internet or other wired or wireless telecommunication systems.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or operated as a general purpose processing unit, a digital signal processing unit, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processing unit may be a micro processing unit, which may alternatively be any conventional processing unit, controller, microcontroller, or state machine. A processing unit may also be implemented as a combination of computing devices, e.g., a digital signal processing unit and a micro-processing unit, a plurality of micro-processing units, one or more micro-processing units in conjunction with a digital signal processing unit core, or any other similar configuration.

In one or more exemplary designs, the functions described above in connection with the embodiments of the invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processing unit. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic computer, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. Such discs (disk) and disks (disc) include compact disks, laser disks, optical disks, DVDs, floppy disks and blu-ray disks where disks usually reproduce data magnetically, while disks usually reproduce data optically with lasers. Combinations of the above may also be included in the computer-readable medium.

The foregoing description of the invention is provided to enable any person skilled in the art to make or use the invention, and any modifications based on the disclosed content should be considered obvious to those skilled in the art, and the general principles defined by the present invention may be applied to other variations without departing from the spirit or scope of the invention. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles of the invention and novel features disclosed.

Claims

1. A method for beam management, the method comprising:

a relay transceiver node determines a first resource group and a second resource group, wherein the first resource group comprises resource units used for measuring and selecting beams in a first beam group between the relay transceiver node and a terminal, and the second resource group comprises resource units used for measuring and selecting beams in a second beam group between the relay transceiver node and a base station;

the relay transceiver node transmits the beams in the first beam group according to the corresponding relation between the resource units included in the first resource group and the beams in the first beam group, and transmits the beams in the second beam group according to the corresponding relation between the resource units included in the second resource group and the beams in the second beam group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of an access link and a backhaul link.

2. The method of claim 1, wherein determining, by the relay transceiver node, a first set of resources and a second set of resources comprises:

the relay transceiver node determines a first reference signal resource according to a second reference signal resource, so that the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of the access link, and the second reference signal resource is used for beam management of the backhaul link;

the relay transceiving node determines the first resource group according to a first reference signal resource and determines the second resource group according to a second reference signal resource; wherein the first set of resources is included in the first reference signal resource and the second set of resources is included in the second reference signal resource.

3. The method of claim 2, wherein before the relay transceiver node transmits the beams in the first beam group according to the correspondence between the resource units included in the first resource group and the beams in the first beam group, the method further comprises:

the relay transceiver node determines a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam in the first beam group;

the relay transceiver node determines a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and the power offset value associated with each beam;

4. The method of claim 3, wherein the determining, by the relay transceiver node, the power offset value associated with each beam in the first beam group comprises:

the relay transceiver node determining a transmit power of each beam in the first beam group;

and the relay transceiver node determines a power offset value of each beam in the first beam group according to the transmitting power of one beam in the first beam group.

5. The method of claim 3, wherein the transmitting, by the relay transceiver node, the power offset value associated with each resource unit in the first set of resources to the terminal comprises:

the relay transceiver node sends first indication information to the terminal, where the first indication information includes N indication fields, where the N indication fields are used to indicate N power offset values, and an indication field of a power offset value associated with each resource unit in the first resource group is included in the N indication fields;

wherein the resource units in the first resource group are included in N resource unit subsets preconfigured for the first reference signal resource, the position ordering of the N indication fields in the first indication information has a one-to-one correspondence relationship with the position ordering of the N resource unit subsets preconfigured for the first reference signal resource, and N is a positive integer greater than 1.

6. The method of claim 3, wherein the transmitting, by the relay transceiver node, the power offset value associated with each resource unit in the first set of resources to the terminal comprises:

the relay transceiver node sends second indication information to the terminal, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value associated with the position index to the terminal;

the second indication information is carried in a Radio Resource Control (RRC) signaling, or carried in a media access control unit (MAC-CE) signaling, or carried in a Downlink Control Information (DCI) signaling.

7. A method of beam management, comprising:

a terminal determines a first resource group configured by a relay transceiver node, where the first resource group is included in a first reference signal resource, and the first reference signal resource is configured for the terminal by the relay transceiver node according to a second reference signal resource, where the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and a resource unit included in the first resource group is used for measuring and selecting a beam in a first beam group between the relay transceiver node and the terminal;

the terminal receives beams in a first beam group from the relay transceiver node using the first set of resources.

8. The method of claim 7, wherein before the terminal receives beams of the first beam group from the relay transceiver node using the first set of resources, the method further comprises:

the terminal receives a power offset value associated with each resource unit in the first resource group from the relay transceiver node;

after the terminal receives beams in the first beam group from the relay transceiver node using the first set of resources, the method further includes:

and the terminal selects one or more beams from the first beam group according to the power offset value associated with each resource unit in the first resource group, and sends the position indexes of the resource units associated with the one or more beams selected from the first beam group to the relay transceiver node.

9. The method of claim 8, wherein the terminal selects one or more beams from the first beam set according to the power offset value associated with each resource unit in the first resource set, comprising:

the terminal acquires the reference signal receiving power of each resource unit in the first resource group;

aiming at a first resource unit in the first resource group, wherein the first resource unit is any one resource unit in the first resource group, and the terminal corrects the reference signal receiving power of the first resource unit according to a power offset value associated with the first resource unit to obtain an equivalent reference signal receiving power of the first resource unit;

and the terminal selects one or more beams from the first beam group according to the equivalent reference signal received power of each resource unit in the first resource group.

10. A method of beam management, comprising:

the base station determines a second resource group, wherein the second resource group is included in a second reference signal resource, the second reference signal resource is partially overlapped with a first reference signal resource, the first reference signal resource is configured for the terminal by the relay transceiver node according to the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and a resource unit included in the second resource group is used for measuring and selecting a beam in the second beam group between the relay transceiver node and the base station;

and the base station receives the beams in the second beam group from the relay transceiving node by using the second resource group.

11. A relay transceiver node, comprising: a processor and a communication interface;

the processor is configured to determine a first resource group and a second resource group, where the first resource group includes resource units used for measuring and selecting beams in a first beam group between the relay transceiver node and a terminal, and the second resource group includes resource units used for measuring and selecting beams in a second beam group between the relay transceiver node and a base station;

the communication interface is configured to send a beam in the first beam group according to a beam corresponding to each resource unit in the first resource group, and send a beam in the second beam group according to a beam corresponding to each resource unit in the second resource group; when the resource units included in the first resource group and the resource units included in the second resource group have the same resource units, the beam transmitted by the relay transceiver node on the same resource units is a common beam of an access link and a backhaul link.

12. The relay transceiver node according to claim 11, wherein the determining the first resource group and the second resource group specifically includes:

determining a first reference signal resource according to a second reference signal resource such that the first reference signal resource partially overlaps with the second reference signal resource; the first reference signal resource is used for beam management of an access link, and the second reference signal resource is used for beam management of a backhaul link;

determining the first resource group according to a first reference signal resource, and determining the second resource group according to a second reference signal resource; wherein the first set of resources is included in the first reference signal resource and the second set of resources is included in the second reference signal resource.

13. The relay transceiving node of claim 12,

the processor is further configured to determine, before the communication interface transmits a beam in the first beam group according to a correspondence between a resource unit included in the first resource group and a beam in the first beam group, a power offset value associated with a beam corresponding to each resource unit in the first resource group and each beam in the first beam group; determining a power offset value associated with each resource unit in the first resource group according to a beam corresponding to each resource unit in the first resource group and a power offset value associated with each beam;

the communication interface is further configured to send a power offset value associated with each resource unit in the first resource group to the terminal.

14. The relay transceiver node of claim 13, wherein the determining a power offset value associated with each beam in the first beam group specifically comprises:

determining a transmit power for each beam in the first beam set;

determining a power offset value for each beam in the first beam set based on the transmit power of one of the beams in the first beam set.

15. The relay transceiver node of claim 13, wherein the sending the power offset value associated with each resource unit in the first resource group to the terminal specifically comprises:

sending first indication information to the terminal, wherein the first indication information comprises N indication fields, the N indication fields are used for indicating N power offset values, and the indication fields of the power offset values associated with each resource unit in the first resource group are contained in the N indication fields;

16. The relay transceiver node of claim 13, wherein the sending the power offset value associated with each resource unit in the first resource group to the terminal specifically comprises:

sending second indication information to the terminal, wherein the second indication information is used for indicating a position index of each resource unit in the first resource group and a power offset value associated with the position index to the terminal;

17. A terminal, characterized in that the terminal comprises: a processor and a communication interface;

the processor is configured to determine a first resource group configured by a relay transceiver node, where the first resource group is included in a first reference signal resource, and the first reference signal resource is configured by the relay transceiver node for the terminal according to a second reference signal resource, where the first reference signal resource is partially overlapped with the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and the first resource group includes resource units used for measurement and selection of beams in a first beam group between the relay transceiver node and the terminal;

the communication interface is configured to receive beams of the first beam group from a relay transceiver node using the first set of resources.

18. The terminal of claim 17,

the communications interface further configured to receive a power offset value associated with each resource unit in the first set of resources from the relay transceiver node prior to receiving a beam in the first set of beams from the relay transceiver node;

the processor is further configured to select one or more beams from the first beam group according to a power offset value associated with each resource unit in the first resource group after the communication interface receives the beams in the first beam group from the relay transceiver node;

the communication interface is further configured to send, to the relay transceiver node, a location index of a resource unit associated with one or more beams selected by the processor from the first beam group.

19. The terminal of claim 18, wherein the selecting one or more beams from the first beam group according to the power offset value associated with each resource unit in the first resource group comprises:

acquiring reference signal receiving power of each resource unit in the first resource group; aiming at a first resource unit in the first resource group, wherein the first resource unit is any one resource unit in the first resource group, and the terminal corrects the reference signal receiving power of the first resource unit according to a power offset value associated with the first resource unit to obtain an equivalent reference signal receiving power of the first resource unit; and selecting one or more beams from the first beam group according to the equivalent reference signal received power of each resource unit in the first resource group.

20. A base station, comprising: a processor and a communication interface;

the processor is configured to determine a second resource group, where the second resource group is included in a second reference signal resource, where the second reference signal resource is partially overlapped with a first reference signal resource, the first reference signal resource is configured for a terminal by a relay transceiver node according to the second reference signal resource, the first reference signal resource is used for beam management of an access link, the second reference signal resource is used for beam management of a backhaul link, and a resource unit included in the second resource group is used for measurement and selection of a beam in a second beam group between the relay transceiver node and the base station;

the communication interface is configured to receive beams of the second beam set from the relay transceiver node using the second set of resources.

21. A circuit system is characterized by comprising an interface unit, a control and operation unit and a storage unit; the interface unit is used for communicating with other components of a base station or a terminal, the storage unit is used for storing computer programs or instructions, and the control and operation unit is used for decoding and executing the computer programs or instructions; the computer program or instructions being executable to perform the method of any one of claims 1 to 6, or 7-9, or 10.