WO2023097875A1

WO2023097875A1 - Downlink control information detection method and apparatus, downlink control information sending method and apparatus, and storage medium

Info

Publication number: WO2023097875A1
Application number: PCT/CN2022/071423
Authority: WO
Inventors: 赵群
Original assignee: 北京小米移动软件有限公司
Priority date: 2021-12-02
Filing date: 2022-01-11
Publication date: 2023-06-08
Also published as: CN114342539A; WO2023097621A1

Abstract

The present disclosure provides a downlink control information detection method and apparatus, a downlink control information sending method and apparatus, and a storage medium. The downlink control information detection method comprises: detecting and receiving, in a time unit and on the basis of the priority order of a plurality of DCIs, corresponding DCIs, wherein the plurality of DCIs comprise at least a group common DCI used for simultaneously scheduling terminal services of a plurality of terminals; and in response to determining that the number of DCIs having been detected and received in the time unit reaches the maximum number of DCIs supported to be detected by the terminal in one time unit, stopping DCI detection in the time unit. In the present disclosure, under the condition that the number of DCIs to be received by the terminal in a time unit exceeds the maximum number of DCIs supported by the terminal, both the terminal and a base station can accurately determine the DCIs detected and received by the terminal, thereby avoiding the problem of unpredictable terminal behaviors, so that the terminal and the base station have the same understanding of data transmission and reception, and the degradation of system performance is avoided.

Description

Downlink control information detection and transmission method and device, storage medium

claim priority statement

This disclosure claims the patent priority of the PCT application whose application number is PCT/CN2021/135145 and whose international filing date is December 02, 2021.

technical field

The present disclosure relates to the communication field, and in particular, to methods and devices for detecting and sending downlink control information, and storage media.

Background technique

At present, different service types have different characteristics, such as arrival period, delay, transmission rate and so on. The network side needs to schedule the data transmission of the corresponding service type through multiple DCI (Downlink Control Information, downlink control information). When the network side needs to transmit multiple types of services, it may occur that multiple DCIs need to be transmitted in the same time unit.

Since the terminal needs to detect and receive DCI in multiple search spaces, or the terminal needs to detect and receive multiple DCIs scrambled by different G-RNTI (Group-Radio Network Tempory Identity, group wireless network temporary identifier) in one search space, finally The number of received DCIs that need to be detected may exceed the maximum number of DCIs supported by the terminal.

When the number of DCIs sent by the network side in the same time unit exceeds the maximum number of DCIs supported by the terminal, the behavior of the terminal is unpredictable, which may lead to inconsistent understanding of data transmission and reception on the network side and the terminal side. Eventually lead to system performance degradation.

Contents of the invention

In order to overcome the problems existing in the related technologies, the embodiments of the present disclosure provide a downlink control information detection and sending method and device, and a storage medium.

According to the first aspect of the embodiments of the present disclosure, a method for detecting downlink control information is provided, the method is applied to a terminal, including:

Within one time unit, based on the priority order of multiple downlink control information DCIs, detect and receive corresponding DCIs; wherein the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stop DCI detection within the time unit.

Optionally, the maximum number of DCIs is a maximum number of unicast DCIs;

The detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information DCI within one time unit includes:

Within one said time unit, the corresponding DCI is detected and received on a set of common search spaces based on a first priority order; wherein the set of common search spaces is a common search space for at least transmitting the set of common DCIs;

In response to determining that the number of DCIs detected and received on the set of common search spaces is less than the maximum number of unicast DCIs, detecting and receiving corresponding DCIs on the terminal-specific search space USS based on a second priority order; wherein the The USS is a search space for transmitting unicast DCI corresponding to the terminal.

Optionally, the maximum number of DCIs is a maximum number of unicast DCIs;

Within one of the time units, detecting and receiving corresponding DCI on a terminal-specific search space USS based on a second priority order; wherein the USS is a search space corresponding to the terminal for transmitting unicast DCI;

In response to determining that the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, detecting and receiving corresponding DCIs on a group common search space based on a first priority order; wherein the group common search space The space is at least a common search space for transmitting the set of common DCI.

Optionally, the first priority order is used to indicate at least one of the following:

The group common search space identifies the priority order from high to low or from low to high;

The priority order of the group wireless network temporary identifier value from high to low or from low to high;

Priority order of terminal services;

The priority order of the control resource set identification is from high to low or from low to high.

Optionally, the second priority order is used to indicate at least one of the following:

The search space identifies the priority order from high to low or from low to high;

Optionally, the method also includes any of the following:

Based on the agreement, determine the first priority order;

The first priority order is determined based on radio resource control RRC signaling sent by the base station.

Optionally, the method also includes any of the following:

Based on the agreement, determine the second priority order;

The second priority order is determined based on radio resource control RRC signaling sent by the base station.

Optionally, the group common DCI detected and received in the group common search space is regarded as unicast downlink DCI.

Optionally, the method also includes:

The maximum number of DCIs is determined based on the terminal capability; wherein the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit.

Optionally, the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit on one serving cell.

Optionally, the detecting and receiving the corresponding DCI based on the priority sequence of multiple downlink control information DCI within one time unit includes:

Within one said time unit, detecting and receiving said set of common DCIs on a set of common search spaces based on a third priority order; wherein said set of common search spaces is a common search for at least transmitting said set of common DCIs space;

In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs detected by the terminal within one time unit, stopping DCI detection within the time unit includes:

In response to determining that the number of the set of common DCIs that have been detected and received within the time unit reaches the maximum number of set of common DCIs indicated by the terminal capability, the set of common search spaces within the time unit to stop DCI detection.

Optionally, the third priority order is used to indicate at least one of the following:

Priority order of terminal services;

Optionally, the method also includes any of the following:

Based on the agreement, determine the third priority order;

The third priority order is determined based on radio resource control RRC signaling sent by the base station.

Optionally, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit is less than or equal to the The maximum number of unicast DCIs supported for detection in the time unit.

According to the second aspect of the embodiments of the present disclosure, a method for sending downlink control information is provided, the method is applied to a base station, including:

In one time unit, send multiple downlink control information DCIs to the terminal; wherein, the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

Based on the priority order of the plurality of DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine the number of DCIs detected and received by the terminal within the time unit At least one DCI.

Optionally, the maximum number of DCIs is a maximum number of unicast DCIs;

Based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine that the terminal detects and receives the multiple DCIs within the time unit At least one DCI, including:

Responsive to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs, determining that the terminal detects and receives based on the first priority order within the time unit The DCI of the maximum number of unicast DCIs sent by the base station on the set of common search spaces; wherein the set of common search spaces is at least a common search space used to transmit the set of common DCIs;

Responsive to determining that the first number is less than the maximum number of unicast DCIs, determining that the terminal detects and receives, within the time unit, based on a first priority order, the information sent by the base station on the set of common search spaces The first number of DCIs, and detecting and receiving the second number of DCIs sent by the base station on the terminal-specific search space USS based on a second priority order; wherein the USS is a corresponding to the terminal for In the search space for transmitting unicast DCI, the sum of the first number and the second number is equal to the maximum number of unicast DCIs.

Optionally, the maximum number of DCIs is a maximum number of unicast DCIs;

Responsive to determining that the third number of DCIs sent by the base station on the terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, determining that the terminal, within the time unit, detects and receiving the DCI of the maximum number of unicast DCIs sent by the base station on the USS; wherein the USS is a search space for transmitting unicast DCI corresponding to the terminal;

In response to determining that the third number is less than the maximum number of unicast DCIs, determining that the terminal detects and receives, within the time unit, based on a second priority order, the first Three numbers of DCIs, and detecting and receiving a fourth number of DCIs sent by the base station on a set of common search spaces based on a first priority order; wherein the set of common search spaces is at least used for transmitting the set of common DCIs public search space, the sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.

Priority order of terminal services;

Optionally, the method also includes:

Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and/or the second priority order configured by the base station.

Optionally, the group common DCI sent to the terminal on the group common search space is regarded as unicast downlink DCI.

Optionally, the maximum number of DCIs is the maximum number of common DCIs determined based on the terminal capability of the terminal;

Responsive to determining that the fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, determining that the terminal detects and receives based on the third priority order within the time unit The set of common DCIs of the maximum set of common DCI numbers sent by the base station on the set of common search spaces; wherein the set of common search spaces is at least a common search space used to transmit the set of common DCIs;

In response to determining that the fifth number is less than or equal to the maximum set of common DCI numbers, determining that the terminal, within the time unit, detects and receives the base station in the set of common search based on the third priority order The fifth number of the set of common DCIs sent spatially.

Priority order of terminal services;

Optionally, the method also includes:

Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the third priority order configured by the base station.

Optionally, the sum of the maximum group of common DCI numbers indicated by the terminal capabilities and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the terminal's The maximum number of unicast DCIs supported for detection within the above time unit.

According to a third aspect of the embodiments of the present disclosure, a device for detecting downlink control information is provided, the device is applied to a terminal, and includes:

The execution module is configured to detect and receive the corresponding DCI based on the priority order of multiple downlink control information DCIs within one time unit; wherein the multiple DCIs include at least terminals for simultaneously scheduling multiple terminals business group public DCI;

A control module configured to stop DCI within the time unit in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal to be detected within one time unit detection.

According to the fourth aspect of the embodiments of the present disclosure, there is provided an apparatus for sending downlink control information, the apparatus is applied to a base station, and includes:

The sending module is configured to send multiple downlink control information DCIs to the terminal within one time unit; wherein the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

The DCI determination module is configured to determine the multiple DCIs that the terminal supports to detect within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal supports to detect within the time unit. At least one DCI detected and received in the DCIs.

According to a fifth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, the storage medium stores a computer program, and the computer program is used to execute the method for detecting downlink control information described in any one of the foregoing.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute the method for sending downlink control information described in any one of the foregoing.

According to a seventh aspect of the embodiments of the present disclosure, a device for detecting downlink control information is provided, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the method for detecting downlink control information described in any one of the above.

According to an eighth aspect of the embodiments of the present disclosure, a device for sending downlink control information is provided, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the method for sending downlink control information described in any one of the above.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the embodiment of the present disclosure, the terminal can detect and receive DCI based on the priority order of multiple DCIs within one time unit, and the base station side can also base on the priority order of multiple DCIs and the supported The maximum number of detected DCIs determines at least one DCI detected and received by the terminal within the time unit. In this disclosure, when the number of DCIs to be received by the terminal exceeds the maximum number of DCIs supported by the terminal within a time unit, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior. The terminal and the base station have a consistent understanding of data transmission and reception, and avoid system performance degradation.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a schematic diagram showing a detection scenario of downlink control information according to an exemplary embodiment.

Fig. 2 is a schematic flowchart of a method for detecting downlink control information according to an exemplary embodiment.

Fig. 3 is a schematic flowchart of another method for detecting downlink control information according to an exemplary embodiment.

Fig. 4 is a schematic flowchart of another method for detecting downlink control information according to an exemplary embodiment.

Fig. 5 is a schematic flowchart of another method for detecting downlink control information according to an exemplary embodiment.

Fig. 6 is a schematic flowchart of a method for sending downlink control information according to an exemplary embodiment.

Fig. 7 is a schematic flowchart showing another method for sending downlink control information according to an exemplary embodiment.

Fig. 8 is a schematic flowchart showing another method for sending downlink control information according to an exemplary embodiment.

Fig. 9 is a schematic flowchart showing another method for sending downlink control information according to an exemplary embodiment.

Fig. 10 is a schematic flowchart of a method for sending and detecting downlink control information according to an exemplary embodiment.

FIG. 11A to FIG. 11B are schematic flow diagrams showing a scene flow of downlink control information detection according to an exemplary embodiment.

Fig. 12 is a block diagram of an apparatus for detecting downlink control information according to an exemplary embodiment.

Fig. 13 is a block diagram of an apparatus for sending downlink control information according to an exemplary embodiment.

Fig. 14 is a schematic structural diagram of a device for detecting downlink control information according to an exemplary embodiment of the present disclosure.

Fig. 15 is a schematic structural diagram of a device for sending downlink control information according to an exemplary embodiment of the present disclosure.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of at least one of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

In Rel-17 (Release-17, version 17), MBS (Multicast Broadcast service, multicast broadcast service) supports multiple business types, such as public safety and mission critical (public safety warning) information, V2X (vehicle to everything, Internet of Vehicles) related information, IPTV (Internet Protocol TV, interactive network TV), OTA (Over The Air, air interface), group communication, etc. The transmission period and transmission rate of different business types are different. For example, for IPTV, its data arrival is often periodic, and the data reliability requirements are general, while for public safety early warning information, its data arrival is often sudden, and the reliability requirements for data transmission are extremely high. Correspondingly, the network side needs to configure different search spaces for downlink control channels that schedule different services. These search spaces have different PDCCH candidate (candidate) configurations, different listening periods, and may be bound to different G-RNTIs.

For a terminal, the amount of DCI that can be decoded in each time unit depends on the capability of the terminal. For example, for a terminal that does not support the FG 3-5b capability, its corresponding time unit is limited to one slot (time slot), and only one slot on the FDD (Frequency Division Duplexing, Frequency Division Duplexing) frequency band can only support detection 1 DL (DownLink, downlink) DCI and 1 UL (UpLink, uplink) DCI, in the TDD (Test Driven Development, time division duplex) frequency band, only one slot can support detection of 1 DL DCI and 2 UL DCI, or support detection of 2 DL DCIs and 1 UL DCI.

For terminals that support FG 3-5b capabilities, the corresponding time unit is limited to a span (range). A span is a time unit smaller than a slot, and generally can be a specified number of time symbols.

Referring to Figure 1, the network side needs to send DCIs corresponding to MBS service #1, MBS service #2, MBS service #3 and terminal-specific services of different periods to the terminal, and the terminal in slot #0 will receive 4 DCIs, 1 DCI is received in

slot#

1, 2 DCIs are received in

slot#

2, 1 DCI is received in

slot#

3, 3 DCIs are received in

slot#

4, 1 DCI is received in

slot#

5, 2 DCIs are received in

slot#

6, 1 DCI is received in slot#7, and so on.

Assuming that the maximum number of DCIs that the terminal supports to detect and receive is 2, then in time units such as slot#0, slot#4, and slot#8, the behavior of the terminal is unpredictable, which may cause the network side and the terminal side to transmit and receive data. Inconsistent understanding. Eventually lead to system performance degradation.

In order to solve the above technical problems, the present disclosure provides methods for detecting and sending downlink control information. The method for detecting downlink control information provided by the present disclosure will be introduced first from the terminal side.

An embodiment of the present disclosure provides a method for detecting downlink control information, as shown in FIG. 2 . FIG. 2 is a flowchart of a method for detecting downlink control information according to an embodiment, which can be used for a terminal. The method may include the following steps :

In step 201, within a time unit, based on the priority order of multiple downlink control information DCIs, corresponding DCIs are detected and received. In the embodiment of the present disclosure, the multiple DCIs include at least a group common DCI used to simultaneously schedule terminal services of multiple terminals, and the group common DCI may be a common DCI used to simultaneously schedule MBS services of multiple terminals. For a terminal that does not support the FG 3-5b capability, the size of a time unit can be a slot; for a terminal that supports the FG 3-5b capability, the size of a time unit can be a span.

In a possible implementation manner, the priority sequence of multiple DCIs may be pre-agreed by the protocol. In another possible implementation manner, the priority sequence of multiple DCIs may be configured by the base station through high-layer signaling, where the high-layer signaling may be RRC (Radio Resource Control, radio resource control) signaling.

In step 202, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stop DCI detection within the time unit .

In the above embodiment, the terminal can detect and receive DCI based on the priority order of multiple DCIs within a time unit, once the number of DCIs detected and received within the time unit reaches the terminal within a time unit If the maximum number of DCIs supported for detection is specified, the terminal stops DCI detection in this time unit. In the present disclosure, the terminal can detect and receive DCIs based on the priority order of multiple DCIs, avoiding unpredictable behavior of the terminal and having high usability.

In some optional embodiments, the terminal may use the group common DCI as unicast (unicast) DCI, and determine the number of received DCI together with the unicast DCI. Correspondingly, the maximum number of DCIs can be multiplexed with the maximum number of unicast DCIs defined in related protocols. Specifically, the terminal can detect and receive DCI in any of the following ways, but not limited to:

In the first way, the terminal preferentially detects and receives the corresponding DCI in the group common search space, and the number of DCIs detected and received in the group common search space is less than the maximum number of unicast DCIs, that is, when the terminal capability limit is not exceeded, the The terminal continues to detect and receive the corresponding DCI in the specific search space.

Referring to FIG. 3, FIG. 3 is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

In step 301, within one time unit, the corresponding DCI is detected and received on the group common search space based on the first priority order.

In an embodiment of the present disclosure, the group of common search spaces is at least a common search space for transmitting the group of common DCI. Both the group common DCI and the unicast DCI can be transmitted on the group common CSS (Common Search Space, group common search space). The first priority order may be pre-agreed in the protocol, or may be configured by the base station side through high-level signaling, where the high-level signaling may be RRC signaling.

In step 302, in response to determining that the number of DCIs detected and received on the set of common search spaces is less than the maximum number of unicast DCIs, a corresponding DCI is detected and received on the terminal-specific search space USS based on a second priority order. DCI.

Wherein, the USS is a search space for transmitting unicast DCI corresponding to the terminal.

In the embodiments of the present disclosure, only unicast DCI can be transmitted on USS (UE Search Space, terminal-specific search space). If the number of DCIs detected and received by the terminal on the group common search space does not reach the maximum number of unicast DCIs, the terminal may continue to detect and receive corresponding DCIs on the USS based on the second priority order. The second priority order may be pre-agreed in the protocol, or may be configured by the base station side through high-level signaling, where the high-level signaling may be RRC signaling.

Step 302 is optional, and needs to be executed when the number of DCIs detected and received on the group common search space does not reach the maximum number of unicast DCIs.

In step 303, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stop DCI detection within the time unit .

In the above embodiment, the terminal may preferentially detect and receive the corresponding DCI in the group common search space based on the first priority order, and when the number of DCIs detected and received in the group common search space is less than the maximum number of unicast DCIs, based on The second priority order continues to detect and receive the corresponding DCI on the USS until it is determined that the number of DCIs detected and received in the time unit reaches the maximum number of DCIs supported by the terminal in one time unit. , stop DCI detection within the time unit. The purpose of detecting and receiving DCIs by the terminal based on the priority order of multiple DCIs is realized, and unpredictable behavior of the terminal is avoided, and the usability is high.

Optionally, the above-mentioned first priority order may be used to indicate at least one of the following: the priority order of the group public search space identifier from high to low or from low to high; the value of the group wireless network temporary identifier from high to low or The order of priority from low to high; the order of priority of terminal services; the order of priority of control resource set identifiers from high to low or from low to high. The second priority order may be used to indicate at least one of the following: the priority order of the search space identification from high to low or from low to high; the priority order of the control resource set identification from high to low or from low to high .

In a possible implementation, the first priority order can be used to indicate the priority order of group common search space ID (group common search space ID) from low to high. The corresponding group common DCI is detected and received in the group common search space of the lower group common search space ID. If the number of DCIs detected and received by the terminal on the group common search space is less than the maximum number of unicast DCIs, the terminal continues to use the second priority The stages sequentially detect and receive the corresponding DCI on the USS. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

In another possible implementation manner, the first priority order may be used to indicate the order of the group wireless network temporary identifier, including but not limited to indicating the value of the group wireless network temporary identifier from high to low or from low to high order of priority. The terminal can detect and receive the corresponding group common DCI in the corresponding group common search space according to the order of the G-RNTI value from high to low or from low to high. The number of DCI detected and received by the terminal on the group common search space If it is less than the maximum number of unicast DCIs, the terminal continues to detect and receive corresponding DCIs on the USS based on the second priority order. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

In another possible implementation manner, the first priority order may be used to indicate the priority order of terminal services. The terminal can detect and receive the corresponding group common DCI in the corresponding group common search space according to the priority order of the terminal service (service). If the number of DCI detected and received by the terminal on the group common search space is less than the maximum unicast DCI number, the terminal continues to detect and receive the corresponding DCI on the USS based on the second priority order. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

In another possible implementation manner, the first priority order may be used to indicate the priority order of CORESET (Control Resource set, control resource set) ID (identification) from high to low or from low to high. The terminal can detect and receive the corresponding group common DCI in the corresponding group common search space according to the priority order of CORESET ID from high to low or from low to high. The number of DCI detected and received by the terminal on the group common search space If it is less than the maximum number of unicast DCIs, the terminal continues to detect and receive corresponding DCIs on the USS based on the second priority order. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

The second way is to first detect and receive the corresponding DCI on the USS, and when the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, that is, when the terminal capability limit is not exceeded, continue to detect in the group common search space And receive the corresponding DCI.

Referring to FIG. 4, FIG. 4 is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

In step 401, within one time unit, the corresponding DCI is detected and received in the terminal-specific search space USS based on the second priority order.

In the embodiment of the present disclosure, the USS is a search space corresponding to the terminal for transmitting unicast DCI, and only unicast DCI can be transmitted on the USS. The second priority order may be pre-agreed in the protocol, or may be configured by the base station side through high-level signaling, where the high-level signaling may be RRC signaling.

In step 402, in response to determining that the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, corresponding DCIs are detected and received on the group common search space based on a first priority order.

In an embodiment of the present disclosure, the group of common search spaces is at least a common search space for transmitting the group of common DCI. If the number of DCIs detected and received by the terminal on the USS does not reach the maximum number of unicast DCIs, the terminal can continue to detect and receive the corresponding DCIs based on the first priority order in the group common search space, and in the group common search space The received DCI may be unicast DCI or group common DCI. The first priority order may be pre-agreed in the protocol, or may be configured by the base station side through high-level signaling, where the high-level signaling may be RRC signaling.

Step 402 is optional, and needs to be executed when the number of DCIs detected and received on the USS does not reach the maximum number of unicast DCIs.

In step 403, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stop DCI detection within the time unit .

In the above-mentioned embodiment, the terminal may preferentially detect and receive the corresponding DCI on the USS based on the second priority order, and when the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, the first priority order Continue to detect and receive the corresponding DCI on the group common search space until it is determined that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, DCI detection is stopped within the time unit. The purpose of detecting and receiving DCIs by the terminal based on the priority order of multiple DCIs is realized, and unpredictable behavior of the terminal is avoided, and the usability is high.

Optionally, the second priority order is used to indicate at least one of the following: the priority order of search space identification from high to low or from low to high; the priority order of control resource set identification from high to low or from low to high order of priority. The first priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the group wireless network temporary identifier value from high to low or from low to high The priority order of the terminal service; the priority order of the control resource set identification from high to low or from low to high.

In a possible implementation manner, the second priority order is used to indicate a priority order of search space identifiers from high to low or from low to high. The terminal can detect and receive the corresponding DCI on the corresponding USS according to the second priority order of the search space identifier from high to low or from low to high. If the number of DCI detected and received by the terminal on the USS is less than the maximum unicast DCI number, the terminal continues to detect and receive the corresponding DCI in the group common search space based on the first priority order. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

The manner in which the terminal detects and receives the corresponding DCI in the group common search space based on the first priority order is similar to the manner in which the terminal detects and receives the corresponding DCI in the group common search space based on the first priority order in the above embodiment, I won't repeat them here.

In another possible implementation manner, the second priority order is used to indicate the priority order of the control resource set identification from high to low or from low to high. The terminal can detect and receive the corresponding DCI on the corresponding USS according to the second priority order of the control resource set identifier from high to low or from low to high. If the number of DCI detected and received by the terminal on the USS is less than the maximum single If the number of broadcast DCIs is broadcast, the terminal continues to detect and receive corresponding DCIs in the group common search space based on the first priority order. Until the number of detected and received DCIs in the time unit reaches the maximum number of unicast DCIs supported by the terminal in one time unit, stop DCI detection in the time unit.

In some optional embodiments, in the case of receiving and receiving DCI in the above-mentioned first method or the second method, the group common DCI detected and received by the terminal in the group common search space, that is, the group common DCI can be It is regarded as unicast downlink DCI. That is to say, when the terminal counts the received unicast downlink DCI, it can count the group common DCI received by the terminal on the group common search space together with the unicast downlink DCI received by the terminal to jointly determine the Number of unicast downlink DCIs.

In the embodiment of the present disclosure, the unicast downlink DCI may be DCI for scheduling a unicast PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel). The unicast uplink DCI may be DCI for scheduling a unicast PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel).

In the above embodiments, the terminal preferentially detects and receives the corresponding DCI on the group common search space, or the terminal preferentially detects and receives the corresponding DCI on the USS. In these two ways, the terminal detects and receives the corresponding DCI on the group common search space The group common DCI can be regarded as unicast downlink DCI, which avoids affecting the transmission of unicast uplink DCI on the terminal side, and has high availability.

In some optional embodiments, a new terminal capability may also be defined separately for the terminal, where the terminal capability is used to indicate the maximum number of groups of common DCIs that the terminal supports to detect within one time unit. That is, when the maximum number of DCIs is determined, the maximum number of unicast DCIs is no longer multiplexed, and a maximum number of group common DCIs is independently defined for the terminal.

Referring to FIG. 5, FIG. 5 is a flow chart of a method for detecting downlink control information according to an embodiment, which can be used in a terminal. The method may include the following steps:

In step 501, the maximum number of DCIs is determined based on terminal capabilities.

In this embodiment of the present disclosure, the terminal capability is used to indicate the maximum number of groups of common DCIs supported by the terminal to be detected within one time unit. Further, terminal capabilities can be defined according to different serving cells. That is, the maximum number of common DCIs supported for detection in one time unit on one serving cell is defined for the terminal. Among them, for a terminal that does not support the FG 3-5b capability, the corresponding time unit size is a slot, and for a terminal that supports the FG 3-5b capability, the corresponding time unit size is a span.

In step 502, within one said time unit, the group common DCI is detected and received on the group common search space based on a third priority order.

Wherein, the set of common search spaces is at least a common search space for transmitting the set of common DCI. Optionally, the third priority order is used to indicate at least one of the following: the priority order of the group common search space identifier from high to low or from low to high; the value of the group wireless network temporary identifier from high to low or from low to low Priority order from high to high; priority order of terminal services; priority order of control resource set identification from high to low or from low to high. Wherein, the third priority order may be predetermined by a protocol, or may be configured by high-level signaling sent by the base station, where the high-level signaling may be RRC signaling.

In the embodiment of the present disclosure, the manner in which the terminal detects and receives the group common DCI in the group common search space based on the third priority order corresponds to the method in which the terminal detects and receives the group common DCI based on the first priority order in the above embodiment. The manner of the DCI is similar and will not be repeated here.

In step 503, in response to determining that the number of the group of common DCIs that have been detected and received within the time unit reaches the maximum number of the group of common DCIs indicated by the terminal capability, the DCI detection is stopped on the group common search space.

In the foregoing embodiment, a new terminal capability may be defined for the terminal, and the maximum number of common DCI groups is determined based on the terminal capability. The terminal detects and receives group common DCI in the group common search space based on the third priority order, until the number of detected and received group common DCI reaches the maximum number of group common DCI, the group common search space within the time unit Spatially stops DCI detection. It also realizes the purpose that the terminal detects and receives DCIs based on the priority order of multiple DCIs, avoids unpredictable behavior of the terminal, and has high usability.

In some optional embodiments, the terminal capability in this disclosure may be shared with the processing capability of unicast DCI. That is to say, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit will not exceed the sum of the number of unicast DCIs that the terminal has received within one time unit. The maximum number of unicast DCIs supported for detection will not exceed the current capability of the terminal to process unicast DCIs.

For example, if the terminal supports FG 3-1 and works in the FDD frequency band, the number of unicast DCIs that the terminal can handle in one time unit, such as one slot, is 1 unicast downlink DCI and 1 unicast uplink DCI, The maximum number of unicast DCIs is 2. Assuming that the terminal reports the terminal capability to the base station, the terminal capability indicates that the maximum number of group common DCIs supported by the terminal in one slot is N, and the number of unicast DCIs that the terminal can process in one slot is 2-N.

In the above embodiment, the sum of the maximum number of common DCIs indicated by the terminal capabilities and the number of unicast DCIs detected and received by the terminal within one time unit is less than or equal to the maximum number of unicast DCIs, combining The ability of the terminal to process unicast DCI enables the terminal to detect and receive DCI based on the priority order of multiple DCIs, and avoid unpredictable behavior of the terminal.

Next, the method for sending downlink control information provided by the present disclosure will be introduced from the base station side.

An embodiment of the present disclosure provides a method for sending downlink control information, as shown in FIG. 6 . FIG. 6 is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps :

In step 601, multiple downlink control information DCIs are sent to the terminal within one time unit.

Wherein, the multiple DCIs include at least group common DCI for simultaneously scheduling terminal services of multiple terminals. In the embodiment of the present disclosure, the terminal service may refer to an MBS service or other services, which is not limited in the present disclosure.

In step 602, based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal supports to detect within one time unit, determine that the terminal is among the multiple DCIs within the time unit At least one DCI detected and received.

In the embodiments of the present disclosure, the order of priorities may be pre-agreed by a protocol, or configured by the base station through high-layer signaling, and the high-layer signaling may be RRC signaling.

In the above embodiment, when the base station sends multiple DCIs to the terminal within one time unit, the base station may determine based on the priority order of multiple DCIs and the maximum number of DCIs that the terminal supports to detect within one time unit. DCI detected and received by the terminal. Both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable behavior of the terminal and system performance degradation.

In some optional embodiments, the terminal side uses the group common DCI as the unicast DCI, and determines the number of detected received DCIs together with the unicast DCI. Correspondingly, the maximum number of DCIs can be multiplexed with the maximum number of unicast DCIs defined in related protocols.

In the first way, the terminal preferentially detects and receives the corresponding DCI on the group common search space, and the number of DCIs detected and received on the group common search space is less than the maximum number of unicast DCIs, that is, when the terminal capability limit is not exceeded, Continue to detect and receive the corresponding DCI on the terminal-specific search space. The base station can send DCI and determine the specific DCI received by the terminal within a time unit in the following ways:

Referring to FIG. 7, FIG. 7 is a flowchart of a method for sending downlink control information according to an embodiment, which can be used in a base station, and the method may include the following steps:

In step 701, multiple downlink control information DCIs are sent to the terminal within one time unit.

Wherein, the multiple DCIs include at least group common DCI for simultaneously scheduling terminal services of multiple terminals.

In step 702, in response to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs, determine that the terminal is within the time unit based on the first priority detect and receive DCIs of the maximum number of unicast DCIs sent by the base station on the set of common search spaces sequentially.

Wherein, the set of common search spaces is at least a common search space for transmitting the set of common DCI.

In the embodiment of the present disclosure, if the first number of DCIs sent by the base station on the group common search space has reached or even exceeded the capability of the terminal, that is, the first number is greater than or equal to the maximum number of unicast DCIs, then the base station can determine that the terminal is in this Within the time unit, the DCI of the maximum number of unicast DCIs sent by the base station on the set of common search spaces will be detected and received based on the first priority order.

Optionally, the first priority order is used to indicate at least one of the following: the priority order of the group public search space identifier from high to low or from low to high; the value of the group wireless network temporary identifier from high to low or from low to low Priority order from high to high; priority order of terminal services; priority order of control resource set identification from high to low or from low to high. The first priority order may be stipulated by a protocol, or configured by the base station through RRC signaling.

In step 703, in response to determining that the first number is less than the maximum number of unicast DCIs, it is determined that the terminal detects and receives the public information of the base station in the group within the time unit based on the first priority order. The first number of DCIs sent on the search space, and the second number of DCIs sent by the base station on the terminal-specific search space USS are detected and received based on a second priority order.

Wherein, the USS is a search space for transmitting unicast DCI corresponding to the terminal, and a sum of the first number and the second number is equal to the maximum number of unicast DCIs.

In an embodiment of the present disclosure, if the base station determines that the first number of DCIs sent on the group common search space does not exceed the capability of the terminal, that is, the first number is less than the maximum number of unicast DCIs, then the base station may determine that the terminal will sequentially detecting and receiving the first number of DCIs sent by the base station on the set of common search spaces, and sequentially detecting and receiving a second number of DCIs sent by the base station on the terminal-specific search space USS based on a second priority order DCI. Wherein, the sum of the first number and the second number is equal to the maximum unicast DCI number.

Wherein, the first priority order is used to indicate at least one of the following: the priority order of the group public search space identification from high to low or from low to high; the value of the group wireless network temporary identifier from high to low or from low to high The priority order of the terminal service; the priority order of the control resource set identification from high to low or from low to high. The second priority order is used to indicate at least one of the following: the priority order of the search space identification is from high to low or from low to high; the control resource set identification is from high to low or from low to high priority order. The first priority order and/or the second priority order may be stipulated in a protocol, or configured by the base station through RRC signaling.

In the above embodiment, the base station may determine the DCI detected and received by the terminal among the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of unicast DCIs that the terminal supports to detect. Both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable behavior of the terminal and system performance degradation.

In the second method, the terminal first detects and receives the corresponding DCI on the USS, and when the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, that is, when the terminal capability limit is not exceeded, the terminal continues on the group common search space. Detect and receive the corresponding DCI. The base station can send DCI and determine the specific DCI received by the terminal within a time unit in the following ways:

Referring to Fig. 8, Fig. 8 is a flow chart of a method for sending downlink control information according to an embodiment, which can be used for a base station, and the method may include the following steps:

In step 801, within one time unit, multiple downlink control information DCIs are sent to the terminal.

In step 802, in response to determining that the third number of DCIs sent by the base station on the terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, determine that the terminal is within the time unit based on the second The priority order is to detect and receive the DCI of the maximum number of unicast DCIs sent by the base station on the USS.

In the embodiment of the present disclosure, if the third number of DCIs sent by the base station on the USS has reached or even exceeded the capability of the terminal, that is, the third number is greater than or equal to the maximum number of unicast DCIs, then the base station can determine that the terminal is within the time unit , the DCI of the maximum number of unicast DCIs sent by the base station on the USS is detected and received based on the second priority order.

Optionally, the second priority order is used to indicate at least one of the following: the search space identifies a priority order from high to low or from low to high; the control resource set identifies a priority from high to low or from low to high order. The second priority order can be stipulated by the protocol, or configured by the base station through RRC signaling.

In step 803, in response to determining that the third number is less than the maximum unicast DCI number, it is determined that the terminal detects and receives that the base station is on the USS based on a second priority order within the time unit. The third number of DCIs is transmitted, and a fourth number of DCIs transmitted by the base station on a group common search space is detected and received based on the first priority order.

Wherein, the group of common search spaces is at least a common search space for transmitting the group of common DCIs, and the sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.

In an embodiment of the present disclosure, if the base station determines that the third number of DCIs sent on the USS does not exceed the capability of the terminal, that is, the third number is less than the maximum number of unicast DCIs, then the base station may determine that the terminal will detect and The third number of DCIs sent by the base station on the USS is received, and a fourth number of DCIs sent by the base station on a group common search space is detected and received based on a first priority order. Wherein, the sum of the third number and the fourth number is equal to the maximum unicast DCI number.

In some optional embodiments, at least one of the first priority order and the second priority order may be configured by the base station through high-layer signaling, and the high-layer signaling may be RRC signaling.

Of course, the base station may also not configure at least one of the first priority order and the second priority order, and the terminal and the base station determine at least one of the first priority order and the second priority order based on the agreement respectively.

In the foregoing embodiment, the base station may configure at least one of the first priority order and the second priority order through high-layer signaling, which is simple to implement and has high usability.

In some optional embodiments, for the above-mentioned first method or second method, the group common DCI sent by the base station to the terminal on the group common search space is regarded as unicast downlink DCI, that is, both the base station and the terminal can The group common DCI transmitted on the common search space is regarded as the unicast downlink DCI, so that the base station side and the terminal side have the same understanding of sending and receiving DCI, and can avoid affecting the transmission of the unicast uplink DCI.

In the embodiment of the present disclosure, the unicast downlink DCI may be the DCI used to schedule the unicast PDSCH. The unicast uplink DCI may be DCI for scheduling unicast PUSCH. In some optional embodiments, a new terminal capability may be defined for the terminal, where the terminal capability is used to indicate the maximum number of groups of common DCIs that the terminal supports to detect within one time unit. Further, the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit on one serving cell. The base station can send DCI and determine the specific DCI received by the terminal within a time unit in the following ways:

Referring to FIG. 9, FIG. 9 is a flow chart of a method for sending downlink control information according to an embodiment, which can be used in a base station. The method may include the following steps:

In step 901, within one time unit, multiple downlink control information DCIs are sent to the terminal.

In step 902, in response to determining that the fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, determine that the terminal is within the time unit based on the third priority The set of common DCIs of the maximum set of common DCI numbers sent by the base station on the set of common search spaces is sequentially detected and received.

Wherein, the set of common search spaces is at least a common search space for transmitting the set of common DCI. The third priority order is used to indicate at least one of the following: the priority order of the group public search space identifier from high to low or from low to high; the priority of the group wireless network temporary identifier value from high to low or from low to high Priority order of terminal services; priority order of control resource set identifiers from high to low or from low to high. Wherein, the third priority order may be configured by the base station through RRC signaling, or pre-agreed by a protocol.

In the embodiment of the present disclosure, if the fifth number of DCIs sent by the base station on the group common search space has reached or even exceeded the capability of the terminal, that is, the fifth number is greater than or equal to the maximum number of group common DCIs, then the base station can determine that the terminal is in the group common search space Within a time unit, the set of common DCIs of the maximum number of sets of common DCIs sent by the base station on the set of common search spaces will be detected and received based on the third priority order.

In step 903, in response to determining that the fifth number is less than or equal to the maximum set of common DCI numbers, it is determined that within the time unit, the terminal, based on the third priority order, detects and receives the The fifth number of the set of common DCIs sent on the set of common search spaces.

In the embodiment of the present disclosure, if the fifth number of DCIs sent by the base station on the group common search space does not reach the capability of the terminal, that is, the fifth number is smaller than the maximum number of group common DCIs, then the base station can determine that the terminal will The fifth number of the set of common DCIs sent by the base station on the set of common search spaces is detected and received based on a third priority order.

In the above embodiment, the base station may determine the DCI detected and received by the terminal among the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of common DCIs indicated by the terminal capability. Both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable behavior of the terminal and system performance degradation.

In some optional embodiments, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit may be less than or equal to the The maximum number of unicast DCIs supported by the terminal to be detected within one time unit.

In the above embodiment, the sum of the maximum number of common DCIs indicated by the terminal capabilities and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the maximum unicast DCI that the terminal supports detection within one time unit In this way, combined with the ability of the terminal to process unicast DCI, the purpose of enabling the terminal to detect and receive DCI based on the priority order of multiple DCIs is realized, and the unpredictable behavior of the terminal is avoided.

It should also be noted that, for the base station, if it is determined that the number of multiple DCIs to be sent to the terminal within a certain time unit exceeds the capability of the terminal, that is, it exceeds the maximum number of DCIs that the terminal supports to detect within a time unit , then the terminal may determine at least one target DCI among the multiple DCIs based on the priority order of the multiple DCIs and the maximum number of DCIs, and send the target DCI to the terminal, where the number of target DCIs is equal to the maximum number of DCIs.

In a possible implementation, if the maximum number of DCIs is the maximum number of unicast DCIs, then the base station may determine that the first number of DCIs to be sent on the group common search space is greater than or equal to the maximum number of unicast DCIs , determining the DCIs of the maximum number of unicast DCIs to be sent in the group common search space based on the first priority order, and sending these DCIs as target DCIs to the terminal.

If the first number is less than the maximum number of unicast DCIs, the base station may determine that the target DCIs to be sent to the terminal include the first number of DCIs to be sent on the group common search space and the second number of DCIs to be sent on the USS . Wherein, the USS is a search space for transmitting unicast DCI corresponding to the terminal, and the sum of the first number and the second number is equal to the maximum number of unicast DCI.

In another possible implementation, when the maximum number of DCIs is the maximum number of unicast DCIs, the base station may determine that the third number of DCIs to be sent on the USS is greater than or equal to the maximum number of unicast DCIs, based on the first Two-priority order Determine the DCI with the maximum number of unicast DCIs to be sent on the USS, and send these DCIs as target DCIs to the terminal.

If the third number is less than the maximum number of unicast DCIs, the base station may determine that target DCIs to be sent to the terminal include the third number of DCIs to be sent on the USS and the fourth number of DCIs to be sent on the group common search space. Wherein, the common search space of the group is a common search space used for at least transmitting the common DCI of the group, and the sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.

In another optional implementation, if the maximum number of DCIs is the maximum number of group common DCIs determined based on terminal capabilities, the base station may determine that the fifth number of group common DCIs to be sent in the group common search space is greater than the maximum number of group common DCIs In the case of the number of common DCIs, the target DCI of the maximum number of common DCIs to be sent is determined on the set of common search spaces based on a third priority order. Wherein, the set of common search spaces is at least a common search space for transmitting the set of common DCI. The base station can send the target DCI of the maximum group of common DCI numbers to the terminal.

If the fifth number is less than or equal to the maximum number of group common DCIs, the fifth number of the group of common DCIs is used as the target DCI and sent to the terminal.

Wherein, the first priority order is used to indicate at least one of the following: the priority order of the group public search space identification from high to low or from low to high; the value of the group wireless network temporary identifier from high to low or from low to high The priority order of the terminal service; the priority order of the control resource set identification from high to low or from low to high. The second priority order is used to indicate at least one of the following: the priority order of the search space identification is from high to low or from low to high; the control resource set identification is from high to low or from low to high priority order. The third priority order is used to indicate at least one of the following: the priority order of the group public search space identifier from high to low or from low to high; the priority of the group wireless network temporary identifier value from high to low or from low to high Priority order of terminal services; priority order of control resource set identifiers from high to low or from low to high.

At least one of the first priority order, the second priority order and the third priority order may be stipulated in a protocol, or configured by the base station through RRC signaling.

In the above embodiment, the base station can send the target DCI among the multiple DCIs to the terminal based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal supports to detect within one time unit, so as to avoid sending invalid DCIs, thereby reducing energy consumption. consumption and can reduce resource overhead.

In some optional embodiments, refer to FIG. 10 , which is a flow chart of a method for sending and detecting downlink control information according to an embodiment. The method may include the following steps:

In step 1001, the base station sends multiple pieces of downlink control information DCI to the terminal within one time unit.

In step 1002, the terminal detects and receives corresponding DCIs based on the priority order of the plurality of DCIs.

In step 1003, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs detected by the terminal within one time unit, the terminal stops DCI within the time unit. detection.

In step 1004, the base station determines the number of DCIs detected by the terminal within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal within one time unit. At least one DCI detected and received in .

In the above embodiment, the terminal can detect and receive DCI based on the priority order of multiple DCIs within one time unit, and the base station can also detect and receive DCI based on the priority order of multiple DCIs and the detection supported by the terminal within one time unit The maximum number of DCIs determines at least one DCI detected and received by the terminal within the time unit. In this disclosure, when the number of DCIs to be received by the terminal exceeds the maximum number of DCIs supported by the terminal within a time unit, both the terminal and the base station can accurately determine the DCI detected and received by the terminal, avoiding the problem of unpredictable terminal behavior. The terminal and the base station have a consistent understanding of data transmission and reception, and avoid system performance degradation.

The above downlink control information detection process is further illustrated as follows with an example.

It is assumed that the terminal is a terminal capable of MBS and supports unicast data transmission. Assuming that the supported PDCCH monitoring capability is FG 3-1, this capability is a mandatory capability for the terminal, and its ability to monitor PDCCH indicates that the terminal can only detect up to two downlink unicast DCIs in one slot.

Referring to FIG. 11A , it is assumed that when the terminal calculates and detects received DCI, it regards group common DCI as unicast DCI, and calculates the number of detected and received DCI together with unicast DCI. In this embodiment, it is assumed that the upper limit of the capability of the terminal to detect DCI is 2 unicast DCIs.

In this embodiment, it is assumed that the base station configures N CSSs of different periods for the terminal to transmit and schedule group common DCI of different MBS services. It is assumed that the RNTI values used for MBS DCI scrambling transmitted in different CSSs are different. At the same time, it is assumed that the USS transmission period configured for the terminal on the network side is one slot, and a specific schematic diagram is shown in FIG. 11A .

In the slot where different search spaces conflict in the time domain, the terminal needs to detect and receive DCI according to its own capabilities and a certain listening sequence. In this embodiment of the present disclosure, the method invented in this embodiment is described by taking the DCI processing process of the terminal in slot#0 as an example. In slot#0, there are 3 search space configurations, namely USS, CSS#1 and CSS#2. The terminal side performs DCI detection and reception according to the following method:

The terminal first detects and receives group common DCI in CSS#1 and CSS#2, and continues to detect and receive DCI in USS only when the number of DCIs received in all CSSs is less than 2. The terminal in this slot needs to detect multiple CSSs. When detecting and receiving DCI in the CSS, it needs to perform DCI detection and reception according to the following steps:

According to the group common search space ID, the group common DCI is detected and received in the search space with the lower search space ID first. In this embodiment, the terminal first detects and receives DCI in CSS#1, and if it does not exceed the capability of the terminal, continues to detect and receive DCI in CSS#2.

After the terminal finishes detecting and receiving DCI in the CSS#1 and CSS#2, if the number of DCIs received at this time has not reached the terminal capability limit, it continues to detect and receive DCI in the USS.

Optionally, the base station may send DCI according to related technologies, and determine the specific DCI received by the terminal based on the method provided in this disclosure. Or when the base station sends DCI, it can avoid sending invalid DCI, thereby avoiding energy waste and resource overhead. For another example, as shown in FIG. 11A , when the UE detects DCI in the CSS, it determines the order of detecting and receiving DCI according to the order of RNTI values. In this embodiment, the terminal may determine the DCI detection reception sequence according to the following rules:

According to the order of the size of the RNTI value, the received DCI is first detected in the CSS with the larger RNTI value. For example, the value of G-RNTI configured in CSS#1 is relatively large, and the value of G-RNTI configured in CSS#2 is relatively small, then the terminal first detects and receives DCI in CSS#1. Then, if the amount of DCI received at this time does not exceed the terminal capability limit, continue to detect received DCI in CSS#2.

Or, detect and receive DCI according to the order of RNTI value from small to large.

Or, according to the arrangement order of the RNTIs configured on the network side, detect and receive the DCI in the corresponding CSS according to the order.

Among them, the group common DCI transmitted on the group common search space, both the terminal and the base station can be regarded as unicast downlink DCI.

For another example as shown in FIG. 11B , it is assumed that one CSS can be configured with multiple G-RNTIs, that is, the terminal needs to detect and receive DCI according to multiple G-RNTIs in CSS#1. When the terminal detects DCI in CSS#1, it determines the order of detecting and receiving DCI according to the order of RNTI value. In this embodiment, the terminal may determine the DCI detection reception sequence according to the following rules:

According to the order of the size of the RNTI value, the received DCI is first detected in the CSS with the larger RNTI value. For example, the value of RNTI configured in CSS#1 is relatively large, and the value of RNTI configured in CSS#2 is relatively small, then the terminal first detects and receives DCI in CSS#1. Then, if the amount of DCI received at this time does not exceed the terminal capability limit, continue to detect received DCI in CSS#2.

If there are multiple CSSs, and each CSS corresponds to multiple G-RNTIs, the terminal can first detect CSS#1 in the order of search space identifiers from low to high or from high to low, and in CSS#1 according to The G-RNTI detects and receives DCI sequentially from high to low.

Among them, the group common DCI transmitted on the group common search space, the terminal and the base station can be regarded as unicast downlink DCI.

For another example, as shown in FIG. 11A , the terminal detects and receives corresponding DCI according to the priority order of terminal services, and the first priority order may be configured by the base station through high-layer signaling. The physical side of the terminal can determine the corresponding service according to parameters such as search space, RNTI, and listening period.

When sending DCI, the base station may consider the above method, so as to avoid sending invalid DCI and avoid energy waste and resource overhead.

For another example, as shown in FIG. 11A , when the terminal detects and receives unicast PDCCH and group common PDCCH in the same slot, it detects DCI sequentially according to the order of CORESET ID. In this embodiment, CSS transmitted in lower numbered CORESETs is preferentially detected.

For another example, when sending the DCI, the base station may send it based on a related mechanism, that is, without considering the priority of the DCI. The method for detecting downlink control information provided in the present disclosure is only implemented on the terminal side.

For another example, when detecting and receiving the DCI, the terminal side preferentially detects the USS. If there are multiple USSs or the number of DCIs to be detected and received in the USS exceeds the maximum capability supported by the terminal, first detect and receive DCIs in the USS in the following order:

Detect and receive the DCI according to the number of the search space

Or, according to the order of the CORESET ID, the DCI is first detected and received in the CORESET with the lower CORESET ID

After completing the detection of the USS, if the number of detected DCI received does not exceed the terminal capability, continue to detect and receive DCI in the CSS, and perform detection according to the following sequence and rules until the detected number of received DCI reaches the limit of the terminal capability:

According to the group common search space ID, the group common DCI is detected and received in the search space with the lower search space ID first

Or, detect and receive the group common DCI in the order of RNTI

Or, detect and receive the group common DCI in the order of service

Or, according to the order of CORESET ID, the group common DCI is detected and received in the CORESET with the lower CORESET ID first.

For another example, in this embodiment, a brand new capability is defined for the terminal, and the maximum number of MBS DCIs supported by the terminal within one time unit on one serving cell is defined. This capability is independent of the currently defined terminal capability, and is an additional capability supported by the terminal on the basis of the current capability. The time unit is a slot or a span, which is not limited in this embodiment.

Based on the capability, the terminal detects and receives the group common DCI in the following order

Or, detect and receive the group common DCI in the order of RNTI

Or, detect and receive the group common DCI in the order of service

Wherein, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit will not exceed the detection capability supported by the terminal within one time unit. The maximum number of unicast DCIs.

Corresponding to the foregoing embodiments of the method for implementing application functions, the present disclosure also provides embodiments of apparatuses for implementing application functions.

Referring to FIG. 12, FIG. 12 is a block diagram of an apparatus for detecting downlink control information according to an exemplary embodiment. The apparatus is used for a terminal and includes:

The execution module 1201 is configured to detect and receive corresponding DCIs based on the priority order of multiple downlink control information DCIs within a time unit; wherein the multiple DCIs include at least the Group common DCI for terminal services;

The control module 1202 is configured to, in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal to detect within one time unit, stop within the time unit DCI detection.

In some optional embodiments, the maximum number of DCIs is a maximum number of unicast DCIs;

The execution module includes:

The first execution sub-module is configured to detect and receive corresponding DCI on the group common search space based on the first priority order within one time unit; wherein the group common search space is at least used for transmitting the A common search space for the set of common DCIs;

The second execution submodule is configured to, in response to determining that the number of DCIs detected and received on the set of common search spaces is less than the maximum number of unicast DCIs, detect on the terminal-specific search space USS based on a second priority order and receive corresponding DCI; wherein, the USS is a search space corresponding to the terminal for transmitting unicast DCI.

The execution module includes:

The third execution submodule is configured to detect and receive corresponding DCI in a terminal-specific search space USS based on a second priority order within one time unit; wherein the USS is a user corresponding to the terminal Search space for transmitting unicast DCI;

The fourth execution submodule is configured to detect and receive corresponding DCI; wherein the set of common search spaces is a common search space for at least transmitting the set of common DCIs.

In some optional embodiments, the first priority order is used to indicate at least one of the following:

Priority order of terminal services;

In some optional embodiments, the second priority order is used to indicate at least one of the following:

In some optional embodiments, the device also includes any of the following:

The first determining module is configured to determine the first priority order based on the agreement;

The second determining module is configured to determine the first priority order based on radio resource control RRC signaling sent by the base station.

In some optional embodiments, the device also includes any of the following:

A third determination module, configured to determine the second priority order based on the agreement;

The fourth determination module is configured to determine the second priority order based on radio resource control RRC signaling sent by the base station.

In some optional embodiments, the group common DCI detected and received on the group common search space is regarded as unicast downlink DCI.

In some optional embodiments, the device also includes:

The fifth determination module is configured to determine the maximum number of DCIs based on terminal capabilities; wherein the terminal capabilities are used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit.

In some optional embodiments, the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit on one serving cell.

In some optional embodiments, the execution module includes:

The fifth execution submodule is configured to detect and receive the group common DCI on the group common search space based on the third priority order within one time unit; wherein the group common search space is at least used for transmitting the common search space of the set of common DCI;

The control module includes:

a control submodule configured to respond to determining that the number of the set of common DCIs that have been detected and received within the time unit reaches the maximum number of set of common DCIs indicated by the terminal capability, during the time unit Stop DCI detection on the group common search space.

In some optional embodiments, the third priority order is used to indicate at least one of the following:

Priority order of terminal services;

In some optional embodiments, the device also includes any of the following:

The sixth determination module is configured to determine the third priority order based on the agreement;

The seventh determining module is configured to determine the third priority order based on radio resource control RRC signaling sent by the base station.

In some optional embodiments, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit is less than or equal to the The maximum number of unicast DCIs supported by the terminal to be detected within one time unit.

Referring to FIG. 13 , FIG. 13 is a block diagram of an apparatus for sending downlink control information according to an exemplary embodiment. The apparatus is used for a base station and includes:

The sending module 1301 is configured to send multiple downlink control information DCIs to the terminal within one time unit; wherein the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

The DCI determination module 1302 is configured to determine, based on the priority sequence of the multiple DCIs and the maximum number of DCIs that the terminal supports to detect within one time unit, determine the multiple At least one DCI detected and received among the DCIs.

The DCI determination module includes:

The first DCI determination submodule is configured to determine that the terminal is within the time unit in response to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs Detecting and receiving DCIs of the maximum number of unicast DCIs sent by the base station on the set of common search spaces based on a first priority order; wherein the set of common search spaces is at least used for transmitting the set of common DCI's common search space;

The second DCI determination submodule is configured to, in response to determining that the first number is less than the maximum unicast DCI number, determine that the terminal detects and receives the base station based on a first priority order within the time unit The first number of DCIs sent on the set of common search spaces, and detecting and receiving the second number of DCIs sent by the base station on the terminal-specific search spaces USS based on a second priority order; wherein the The USS is a search space for transmitting unicast DCI corresponding to the terminal, and the sum of the first number and the second number is equal to the maximum number of unicast DCIs.

The first DCI determination module includes:

The third DCI determination submodule is configured to, in response to determining that the third number of DCIs sent by the base station on the terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, determine that the terminal is in the time unit Detect and receive the DCI of the maximum number of unicast DCIs sent by the base station on the USS based on a second priority order; wherein, the USS is used for transmitting unicast DCI corresponding to the terminal search space;

The fourth DCI determination submodule is configured to, in response to determining that the third number is less than the maximum unicast DCI number, determine that the terminal detects and receives the base station based on a second priority order within the time unit The third number of DCIs sent on the USS, and detecting and receiving a fourth number of DCIs sent by the base station on a set of common search spaces based on a first priority order; wherein the set of common search spaces is at least a common search space for transmitting the group of common DCIs, and the sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.

Priority order of terminal services;

In some optional embodiments, the device also includes:

The first sending module is configured to send radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and/or the first priority order configured by the base station Describe the second priority order.

In some optional embodiments, the group common DCI sent to the terminal on the group common search space is regarded as unicast downlink DCI.

In some optional embodiments, the maximum number of DCIs is the maximum number of common DCIs determined based on the terminal capability of the terminal;

The DCI determination module includes:

The fifth DCI determination submodule is configured to determine that the terminal is within the time unit in response to determining that the fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs , detecting and receiving the set of common DCIs of the maximum number of set of common DCIs sent by the base station on the set of common search spaces based on a third priority order; wherein the set of common search spaces is at least used for transmission a common search space for the set of common DCIs;

The sixth DCI determination submodule is configured to, in response to determining that the fifth number is less than or equal to the maximum set of common DCI numbers, determine that the terminal is within the time unit, based on the third priority sequence detection and receiving the fifth number of the set of common DCIs sent by the base station on the set of common search spaces.

Priority order of terminal services;

In some optional embodiments, the device also includes:

The second sending module is configured to send radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the third priority order configured by the base station.

In some optional embodiments, the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit is less than or equal to the The maximum number of unicast DCIs supported by the terminal to be detected within one time unit.

As for the device embodiment, since it basically corresponds to the method embodiment, for related parts, please refer to the part description of the method embodiment. The device embodiments described above are only illustrative, and the above-mentioned units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in a place, or can also be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. It can be understood and implemented by those skilled in the art without creative effort.

Correspondingly, the present disclosure also provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute any one of the methods for detecting downlink control information described above.

Correspondingly, the present disclosure also provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute any one of the methods for sending downlink control information described above.

Correspondingly, the present disclosure also provides a device for detecting downlink control information, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute any one of the methods for detecting downlink control information described above.

Fig. 14 is a block diagram of an electronic device 1400 according to an exemplary embodiment. For example, the electronic device 1400 may be a terminal such as a mobile phone, a tablet computer, an e-book reader, a multimedia playback device, a wearable device, a vehicle terminal, an ipad, and a smart TV.

Referring to FIG. 14 , an electronic device 1400 may include one or more of the following components: a processing component 1402, a memory 1404, a power supply component 1406, a multimedia component 1408, an audio component 1410, an input/output (I/O) interface 1412, a sensor component 1416, and communication component 1418 .

The processing component 1402 generally controls the overall operations of the electronic device 1400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1402 may include one or more processors 1420 to execute instructions to complete all or part of the steps in the above-mentioned method for detecting downlink control information. Additionally, processing component 1402 may include one or more modules that facilitate interaction between processing component 1402 and other components. For example, processing component 1402 may include a multimedia module to facilitate interaction between multimedia component 1408 and processing component 1402 . For another example, the processing component 1402 may read executable instructions from the memory, so as to implement the steps of a method for detecting downlink control information provided in the foregoing embodiments.

The memory 1404 is configured to store various types of data to support operations at the electronic device 1400 . Examples of such data include instructions for any application or method operating on the electronic device 1400, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1404 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 1406 provides power to various components of the electronic device 1400 . Power components 1406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for electronic device 1400 .

The multimedia component 1408 includes a display screen providing an output interface between the electronic device 1400 and the user. In some embodiments, the multimedia component 1408 includes a front camera and/or a rear camera. When the electronic device 1400 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 1410 is configured to output and/or input audio signals. For example, the audio component 1410 includes a microphone (MIC), which is configured to receive an external audio signal when the electronic device 1400 is in an operation mode, such as a call mode, a recording mode and a voice recognition mode. Received audio signals may be further stored in memory 1404 or sent via communication component 1418 . In some embodiments, the audio component 1410 also includes a speaker for outputting audio signals.

The I/O interface 1412 provides an interface between the processing component 1402 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

Sensor assembly 1416 includes one or more sensors for providing various aspects of status assessment for electronic device 1400 . For example, the sensor component 1416 can detect the open/closed state of the electronic device 1400, the relative positioning of components, such as the display and the keypad of the electronic device 1400, the sensor component 1416 can also detect the electronic device 1400 or a Changes in position of components, presence or absence of user contact with electronic device 1400 , electronic device 1400 orientation or acceleration/deceleration and temperature changes in electronic device 1400 . Sensor assembly 1416 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 1416 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor assembly 1416 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 1418 is configured to facilitate wired or wireless communication between the electronic device 1400 and other devices. The electronic device 1400 can access a wireless network based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In one exemplary embodiment, the communication component 1418 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1418 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, electronic device 1400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Realized by a programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the method for detecting the above-mentioned downlink control information.

In an exemplary embodiment, there is also provided a non-transitory machine-readable storage medium including instructions, such as a memory 1404 including instructions, the above instructions can be executed by the processor 1420 of the electronic device 1400 to complete the above method for detecting downlink control information . For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Correspondingly, the present disclosure also provides an apparatus for sending downlink control information, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute any one of the methods for sending downlink control information described above.

As shown in Fig. 15, Fig. 15 is a schematic structural diagram of an apparatus 1500 for sending downlink control information according to an exemplary embodiment. The apparatus 1500 may be provided as a base station. Referring to FIG. 15 , the device 1500 includes a processing component 1522 , a wireless transmitting/receiving component 1524 , an antenna component 1526 , and a signal processing part specific to a wireless interface. The processing component 1522 may further include at least one processor.

One of the processors in the processing component 1522 may be configured to execute any method for sending downlink control information described above.

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any modification, use or adaptation of the present disclosure. These modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A method for detecting downlink control information, characterized in that the method is executed by a terminal, including:

Within one time unit, based on the priority order of multiple downlink control information DCIs, detect and receive corresponding DCIs; wherein the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stop DCI detection within the time unit.
The method according to claim 1, wherein the maximum number of DCIs is a maximum number of unicast DCIs;

The detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information DCI within one time unit includes:

Within one said time unit, the corresponding DCI is detected and received on a set of common search spaces based on a first priority order; wherein the set of common search spaces is a common search space for at least transmitting the set of common DCIs;

In response to determining that the number of DCIs detected and received on the set of common search spaces is less than the maximum number of unicast DCIs, detecting and receiving corresponding DCIs on the terminal-specific search space USS based on a second priority order; wherein the The USS is a search space for transmitting unicast DCI corresponding to the terminal.
The method according to claim 1, wherein the maximum number of DCIs is a maximum number of unicast DCIs;

The detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information DCI within one time unit includes:

Within one said time unit, detect and receive corresponding DCI on a terminal-specific search space USS based on a second priority order; wherein the USS is a search space for transmitting unicast DCI corresponding to the terminal;

In response to determining that the number of DCIs detected and received on the USS is less than the maximum number of unicast DCIs, detecting and receiving corresponding DCIs on a group common search space based on a first priority order; wherein the group common search space The space is at least a common search space for transmitting the set of common DCI.
The method according to claim 2 or 3, wherein the first priority order is used to indicate at least one of the following:

The group common search space identifies the priority order from high to low or from low to high;

The priority order of the group wireless network temporary identifier value from high to low or from low to high;

Priority order of terminal services;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 2 or 3, wherein the second priority order is used to indicate at least one of the following:

The search space identifies the priority order from high to low or from low to high;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 2 or 3, wherein the method further comprises any of the following:

Based on the agreement, determine the first priority order;

The first priority order is determined based on radio resource control RRC signaling sent by the base station.
The method according to claim 2 or 3, wherein the method further comprises any of the following:

Based on the agreement, determine the second priority order;

The second priority order is determined based on radio resource control RRC signaling sent by the base station.
The method according to claim 2 or 3, wherein the group common DCI detected and received in the group common search space is regarded as unicast downlink DCI.
The method according to claim 1, further comprising:

Determine the maximum number of DCIs based on the terminal capability; wherein the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit.
The method according to claim 9, wherein the terminal capability is used to indicate the maximum number of common DCIs that the terminal supports to detect within one time unit on one serving cell.
The method according to claim 9 or 10, wherein the detecting and receiving the corresponding DCI based on the priority order of multiple downlink control information DCI within one time unit includes:

Within one said time unit, detecting and receiving said set of common DCIs on a set of common search spaces based on a third priority order; wherein said set of common search spaces is a common search for at least transmitting said set of common DCIs space;

In response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal for detection within one time unit, stopping DCI detection within the time unit includes:

In response to determining that the number of the set of common DCIs that have been detected and received within the time unit reaches the maximum number of set of common DCIs indicated by the terminal capability, the set of common search spaces within the time unit to stop DCI detection.
The method according to claim 11, wherein the third priority order is used to indicate at least one of the following:

The group common search space identifies the priority order from high to low or from low to high;

The priority order of the group wireless network temporary identifier value from high to low or from low to high;

Priority order of terminal services;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 12, characterized in that the method further comprises any of the following:

Based on the agreement, determine the third priority order;

The third priority order is determined based on radio resource control RRC signaling sent by the base station.
The method according to claim 9, wherein the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs detected and received by the terminal within one time unit The value is less than or equal to the maximum number of unicast DCIs supported by the terminal to be detected within one time unit.
A method for sending downlink control information, characterized in that the method is performed by a base station, comprising:

In one time unit, send multiple downlink control information DCIs to the terminal; wherein, the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

Based on the priority order of the plurality of DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine the number of DCIs detected and received by the terminal within the time unit At least one DCI.
The method according to claim 15, wherein the maximum number of DCIs is a maximum number of unicast DCIs;

Based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine that the terminal detects and receives the multiple DCIs within the time unit At least one DCI, including:

Responsive to determining that the first number of DCIs sent by the base station on the group common search space is greater than or equal to the maximum number of unicast DCIs, determining that the terminal detects and receives based on the first priority order within the time unit The DCI of the maximum number of unicast DCIs sent by the base station on the set of common search spaces; wherein the set of common search spaces is at least a common search space used to transmit the set of common DCIs;

Responsive to determining that the first number is less than the maximum number of unicast DCIs, determining that the terminal detects and receives, within the time unit, based on a first priority order, the information sent by the base station on the set of common search spaces The first number of DCIs, and detecting and receiving the second number of DCIs sent by the base station on the terminal-specific search space USS based on a second priority order; wherein the USS is a corresponding to the terminal for In the search space for transmitting unicast DCI, the sum of the first number and the second number is equal to the maximum number of unicast DCIs.
The method according to claim 15, wherein the maximum number of DCIs is the maximum number of unicast DCIs;

Based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine that the terminal detects and receives the multiple DCIs within the time unit At least one DCI, including:

Responsive to determining that the third number of DCIs sent by the base station on the terminal-specific search space USS is greater than or equal to the maximum number of unicast DCIs, determining that the terminal, within the time unit, detects and receiving the DCI of the maximum number of unicast DCIs sent by the base station on the USS; wherein the USS is a search space for transmitting unicast DCI corresponding to the terminal;

In response to determining that the third number is less than the maximum number of unicast DCIs, determining that the terminal detects and receives, within the time unit, based on a second priority order, the first Three numbers of DCIs, and detecting and receiving a fourth number of DCIs sent by the base station on a set of common search spaces based on a first priority order; wherein the set of common search spaces is at least used for transmitting the set of common DCIs public search space, the sum of the third number and the fourth number is equal to the maximum number of unicast DCIs.
The method according to claim 16 or 17, wherein the first priority order is used to indicate at least one of the following:

The group common search space identifies the priority order from high to low or from low to high;

The priority order of the group wireless network temporary identifier value from high to low or from low to high;

Priority order of terminal services;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 16 or 17, wherein the second priority order is used to indicate at least one of the following:

The search space identifies the priority order from high to low or from low to high;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 16 or 17, wherein the method further comprises:

Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the first priority order and/or the second priority order configured by the base station.
The method according to claim 16 or 17, wherein the group common DCI sent to the terminal in the group common search space is regarded as unicast downlink DCI.
The method according to claim 15, wherein the maximum number of DCIs is the maximum number of common DCIs determined based on the terminal capability of the terminal;

Based on the priority order of the multiple DCIs and the maximum number of DCIs supported by the terminal within one time unit, determine that the terminal detects and receives the multiple DCIs within the time unit At least one DCI, including:

Responsive to determining that the fifth number of group common DCIs sent by the base station on the group common search space is greater than the maximum number of group common DCIs, determining that the terminal detects and receives based on the third priority order within the time unit The set of common DCIs of the maximum set of common DCI numbers sent by the base station on the set of common search spaces; wherein the set of common search spaces is at least a common search space used to transmit the set of common DCIs;

In response to determining that the fifth number is less than or equal to the maximum set of common DCI numbers, determining that the terminal, within the time unit, detects and receives the base station in the set of common search based on the third priority order The fifth number of the set of common DCIs sent spatially.
The method according to claim 22, wherein the third priority order is used to indicate at least one of the following:

The group common search space identifies the priority order from high to low or from low to high;

The priority order of the group wireless network temporary identifier value from high to low or from low to high;

Priority order of terminal services;

The priority order of the control resource set identification is from high to low or from low to high.
The method according to claim 22, further comprising:

Sending radio resource control RRC signaling to the terminal; wherein the RRC signaling is used to indicate to the terminal the third priority order configured by the base station.
The method according to claim 22, wherein the sum of the maximum group of common DCI numbers indicated by the terminal capability and the number of unicast DCIs sent by the base station to the terminal within one time unit less than or equal to the maximum number of unicast DCIs supported by the terminal to be detected within one time unit.
A device for detecting downlink control information, characterized in that the device is applied to a terminal, including:

The execution module is configured to detect and receive the corresponding DCI based on the priority order of multiple downlink control information DCIs within one time unit; wherein the multiple DCIs include at least terminals for simultaneously scheduling multiple terminals Group public DCI of the business;

A control module configured to stop DCI within the time unit in response to determining that the number of DCIs detected and received within the time unit reaches the maximum number of DCIs supported by the terminal to be detected within one time unit detection.
A device for sending downlink control information, characterized in that the device is applied to a base station, including:

The sending module is configured to send multiple downlink control information DCIs to the terminal within one time unit; wherein the multiple DCIs include at least a group common DCI for simultaneously scheduling terminal services of multiple terminals;

The DCI determination module is configured to determine the multiple DCIs that the terminal supports to detect within the time unit based on the priority order of the multiple DCIs and the maximum number of DCIs that the terminal supports to detect within the time unit. At least one DCI detected and received in the DCIs.
A computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the method for detecting downlink control information according to any one of claims 1-14.
A computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the method for sending downlink control information according to any one of claims 15-25.
A device for detecting downlink control information, characterized in that it includes:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the method for detecting downlink control information according to any one of claims 1-14 above.
A device for sending downlink control information, characterized in that it includes:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the downlink control information sending method described in any one of claims 15-25.