CN114978448A

CN114978448A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114978448A
Application number: CN202111586695.2A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Tuluo Communication Technology Partnership LP
Current assignee: Shanghai Tuluo Communication Technology Partnership LP
Priority date: 2021-02-19
Filing date: 2021-12-23
Publication date: 2022-08-30
Anticipated expiration: 2041-12-23
Also published as: CN114978448B

Abstract

A method and apparatus in a node used for wireless communication is disclosed. The node firstly receives a first signal; subsequently receiving a second signal and determining whether to transmit the second signaling; the first signal carries a first block of bits and the second signal carries the first block of bits; the first signal is correctly received; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly. The method and the device for optimizing the sending of the feedback information under the multicast group broadcast establish a relation between whether the feedback information aiming at the retransmission is sent and the first identifier or the first measurement value so as to optimize the system performance.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a design scheme and apparatus for uplink feedback in wireless communication.

Background

The NR Rel-17 standard has begun to discuss how Multicast (Multicast) and Broadcast (Broadcast) traffic can be supported under a 5G architecture. In a conventional LTE (Long-Term Evolution ) and LTE-a (Long-Term Evolution-enhanced) system, a base station supports a terminal To receive a Multicast service in a Single-Cell-Point-To-Multipoint (SC-PTM) manner through an MBSFN (Multicast Broadcast Single Frequency Network). Multicast broadcast services based on NR systems will be designed more flexibly, and uplink feedback of UEs (User equipments) will need to be redesigned.

Disclosure of Invention

Currently, for retransmission of PTM (Point-To-Multipoint) transmission, a unicast manner or a multicast manner may be adopted, and for a part of terminals that correctly receive a data channel and have sent feedback, when a base station resends the data channel in a multicast manner, according To a conventional method, the terminal still needs To send HARQ-ACK feedback To inform the base station whether the retransmitted data channel is correctly received. The above method obviously increases the overhead of uplink control signaling, and causes unnecessary waste of resources and power.

In view of the above, the present application discloses a solution. It should be noted that although the above description uses the communications scenario of PTM as an example, the present application is also applicable to other scenarios such as unicast systems, and achieves technical effects similar to those in PTM. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to PTM) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features of embodiments in any node of the present application may be applied to any other node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

In view of the above problems, the present application discloses a method and an apparatus for UCI (Uplink Control Information) transmission. It should be noted that, without conflict, the embodiments and features in the embodiments in the user equipment of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the purpose of the present application is for cellular networks, the present application can also be used for internet of things and car networking. Further, although the present application is originally directed to multicarrier communication, the present application can also be applied to single carrier communication. Further, although the present application was originally directed to multicast, it can also be used for unicast communication. Further, although the original intention of the present application is directed to the terminal and base station scenario, the present application is also applicable to the terminal and terminal, the terminal and relay, the Non-Terrestrial network (NTN), and the communication scenario between the relay and the base station, and similar technical effects in the terminal and base station scenario are obtained. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to the communication scenario of the terminal and the base station) also helps to reduce hardware complexity and cost.

Further, without conflict, embodiments and features of embodiments in a first node device of the present application may apply to a second node device and vice versa. In particular, the terms (telematics), nouns, functions, variables in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP specification protocol TS (technical specification)36 series, TS38 series, TS37 series.

The application discloses a method in a first node for wireless communication, comprising:

receiving a first signal;

receiving a second signal and determining whether to transmit the second signaling;

wherein the time domain resource occupied by the second signal is used for determining the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, one technical feature of the above method is that: establishing a relationship between whether the first node sends the feedback aiming at the second signal and at least one of the first identifier or the first measured value, that is, the first node sends the second signaling only when the first identifier or the first measured value meets a certain condition under the condition that the first signal is correctly received, thereby avoiding the condition that the second signaling is sent only when the second signal is received, reducing the overhead of uplink control signaling, and improving the spectrum efficiency.

As an embodiment, one technical feature of the above method is that: when the first identifier is used for determining whether to send the second signaling, the base station can group the UE performing PTM transmission, for example, the UE is divided into a first terminal group and a second terminal group, the second signaling is sent when the first node belongs to the first terminal group, and the second signaling is not sent when the first node belongs to the second terminal group; the first terminal group and the second terminal group correspond to different service types, or the first terminal group and the second terminal group correspond to different service priorities; and the terminal with high requirement on time delay of the service type sends the second signaling, or the terminal with high service priority sends the second signaling.

As an embodiment, one technical feature of the above method is that: when said first measurement value is used to determine whether to send said second signalling, the system is able to group UEs performing PTM transmission according to channel quality, e.g. by grouping UEs into two groups, the one with better channel quality belonging to the one group and the one with worse channel quality belonging to the other group; only the UEs in the group with the worse channel quality send the second signaling.

According to one aspect of the application, comprising:

sending a second signaling;

wherein the first identity is equal to a first candidate identity; or the first measurement value belongs to a first measurement value interval.

As an embodiment, one technical feature of the above method is that: when the base station retransmits the data corresponding to the first bit block in a multicast mode, only part of the UEs which correctly receive the data corresponding to the first bit block meet specific conditions continue to feed back the HARQ aiming at the data corresponding to the first bit block, so as to save uplink resources.

According to one aspect of the application, comprising:

sending a first signaling;

wherein the first signaling is used for indicating that the first signal is correctly received, and the time domain resource occupied by the first signal is used for determining the time domain resource occupied by the first signaling.

As an embodiment, one technical feature of the above method is that: the present application is only designed for the case where the first signal has been correctly received by the first node, i.e. the first node assumes that the base station already knows that the first bit block has been correctly received by the first node, and thus the base station does not make sense whether the first node correctly receives the first bit block even if no feedback is sent for the second signal.

According to an aspect of the application, the second signal is a P-th retransmission for the first bit block, P being a positive integer greater than a target threshold, the target threshold being a positive integer greater than 1; the first node determines whether to send the second signaling only if the P is greater than the target threshold.

As an embodiment, one technical feature of the above method is that: the first node provided in the present application may not feed back the second signal only in a scenario of multiple retransmissions, that is, only if the retransmissions satisfy a certain number of times, the terminal may not send feedback for the multicast data channel, so as to ensure reliability of the system.

According to an aspect of the application, the second signaling is used for indicating that the second signal is received in error, the first sequence is used for generating the second signaling, the first sequence generates a target sequence through cyclic shift, the target sequence is mapped to one multicarrier symbol occupied by the second signaling in a time domain, a first parameter is used for determining cyclic shift for generating the target sequence, and the first parameter is a non-negative integer smaller than the length of the first sequence; the first identifier is used to determine the first parameter or the first measurement value is used to determine the first parameter.

As an embodiment, one technical feature of the above method is that: in a NACK-only scene, a plurality of terminals send NACK information on the same resource; and for different UEs, determining the first parameter according to the first identifier or the first measurement value, so as to achieve that cyclic shifts adopted by UEs adopting different identifiers or measuring different measurement values are different, thereby achieving a technical effect of distinguishing NACKs reported by UEs adopting different cyclic shifts at a base station side in a code division manner.

According to an aspect of the application, the transmission power value of the second signaling is equal to a first power value, the first parameter is used to determine a first reference power value, and the first reference power value is used to determine the first power value.

As an embodiment, one technical feature of the above method is that: further, the sending power values of the UEs in different groups are distinguished through the first parameter, so that different receiving power values of the wireless signals sent by the UEs in different groups when reaching the base station side are achieved, and the base station is more favorable for distinguishing the PUCCH (Physical Uplink Control Channel) sent by the UEs in different groups.

According to one aspect of the application, comprising:

receiving a third signaling;

receiving a fourth signaling;

wherein the third signaling is used to indicate at least one of a time domain resource or a frequency domain resource occupied by the first signal; the fourth signaling is used to indicate at least one of a time domain resource or a frequency domain resource occupied by the second signal.

The application discloses a method in a second node for wireless communication, comprising:

transmitting a first signal;

sending a second signal and monitoring the second signal;

wherein the time domain resource occupied by the second signal is used for determining the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; a recipient of the first signal comprises a first node by which the first signal was correctly received; at least one of a first identity or a first measurement value is used by the first node to determine whether to send the second signaling, the first identity is used to initialize a generator of a scrambling code of the second signal, and the first measurement value is a measurement value obtained by the first node through measurement; when the second signaling is sent by the first node, the second signaling is used to indicate whether the first block of bits is decoded correctly.

According to one aspect of the application, comprising:

receiving a second signaling;

According to one aspect of the application, comprising:

receiving a first signaling;

According to one aspect of the application, comprising:

sending a third signaling;

sending a fourth signaling;

The application discloses a first node for wireless communication, including:

a first transceiver to receive a first signal;

a second transceiver which receives the second signal and determines whether to transmit the second signaling;

The application discloses a second node for wireless communication, including:

a third transceiver to transmit the first signal;

a fourth transceiver for transmitting the second signal and monitoring the second signaling;

wherein the time domain resources occupied by the second signal are used to determine the time domain resources occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; a recipient of the first signal comprises a first node by which the first signal was correctly received; at least one of a first identity or a first measurement value is used by the first node to determine whether to send the second signaling, the first identity is used to initialize a generator of a scrambling code of the second signal, and the first measurement value is a measurement value obtained by the first node through measurement; when the second signaling is sent by the first node, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an example, compared with the conventional scheme, the method has the following advantages:

establishing a connection between the first node and at least one of the first identifier or the first measurement value and whether the first node sends the feedback for the second signal, that is, the first node sends the second signaling only when the first identifier or the first measurement value meets a certain condition under the condition that the first signal is correctly received, so as to avoid the condition that the second signaling is sent only when the second signal is received, reduce the overhead of the uplink control signaling, and improve the spectrum efficiency;

when the first identifier is used to determine whether to send the second signaling, the base station is able to group UEs that perform PTM transmission, e.g., group UEs into a first terminal group and a second terminal group, send the second signaling when the first node belongs to the first terminal group, and not send the second signaling when the first node belongs to the second terminal group; the first terminal group and the second terminal group correspond to different service types, or the first terminal group and the second terminal group correspond to different service priorities; the terminal with high requirement on time delay for the service type sends the second signaling, or the terminal with high service priority sends the second signaling;

when said first measurement value is used to determine whether to send said second signaling, the system is able to group UEs performing PTM transmission according to channel quality, e.g. the UEs are divided into two groups, one to which the channel quality is better and the other to which the channel quality is worse; only the UEs in the group with poor channel quality send the second signaling;

the first node may not feed back the second signal only in a scenario of multiple retransmissions, that is, only if the retransmissions satisfy a certain number of retransmissions, the terminal may not send feedback for the multicast data channel, so as to ensure reliability of the system.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a first signal according to an embodiment of the present application;

figure 6 shows a schematic diagram of second signaling according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of a first marker according to an embodiment of the present application;

FIG. 8 shows a schematic view of a first marker according to another embodiment of the present application;

FIG. 9 shows a schematic of a first measurement according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of a first parameter according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of cyclic shifting according to an embodiment of the present application;

figure 12 shows a schematic diagram of a second signaling generation according to an embodiment of the present application;

FIG. 13 shows a block diagram of a processing arrangement in a first node device according to an embodiment of the present application;

fig. 14 shows a block diagram of a processing apparatus in a second node device according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application receives a first signal in step 101, receives a second signal in step 102, and determines whether to transmit second signaling.

In embodiment 1, the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node; at least one of a first identifier used to initialize a scrambling code of the second signal or a first measurement value measured by the first node is used to determine whether to transmit the second signaling; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, the Physical layer Channel carrying the first signal includes a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the transmission Channel carrying the first signal includes DL-SCH (Downlink Shared Channel).

As an embodiment, the transmission Channel carrying the first signal includes a PTM-SCH (Point-To-Multipoint Shared Channel).

As an embodiment, the transmission Channel carrying the first signal includes a SC-SCH (Single-Cell Shared Channel).

As an embodiment, the first signal is used for transmission of a multicast service.

As one embodiment, the physical layer channel carrying the second signal comprises a PDSCH.

As an embodiment, the transport channel carrying the second signal comprises a DL-SCH.

As an embodiment, the transport channel carrying said second signal comprises a PTM-SCH.

As an embodiment, the transport channel carrying the second signal comprises an SC-SCH.

As an embodiment, the second signal is used for transmission of a multicast service.

As one embodiment, the first block of bits is used for transmissions other than unicast.

As an embodiment, G-RNTI (Group Radio Network Temporary Identifier) is used to initialize the generator of the scrambling code of the first signal.

As an embodiment, a GC-RNTI (Group Common Radio Network Temporary Identifier) is used to initialize the generator of the scrambling code of the first signal.

As an embodiment, SC-RNTI (Single Carrier Radio Network Temporary Identifier) is used to initialize the generator of the scrambling code of the first signal.

As an embodiment, SC-PTM-RNTI (Single Carrier Point to Multipoint Radio Network Temporary Identifier) is used to initialize the generator of the scrambling code of the first signal.

As an embodiment, SC-SFN-RNTI (Single Carrier Single Frequency Network Radio Network Temporary identity) is used to initialize the generator of the scrambling code of the first signal.

As an embodiment, an RNTI (Radio Network Temporary Identifier) other than a C-RNTI (Cell Radio Network Temporary Identifier) is used to initialize the generator of the scrambling code of the first signal.

As one embodiment, the first signal is a wireless signal.

As one embodiment, the first signal is a baseband signal.

As an embodiment, the GC-RNTI is used to initialize the generator of the scrambling code of the second signal.

As an embodiment, the SC-RNTI is used to initialize the generator of the scrambling code of the second signal.

As an embodiment SC-PTM-RNTI is used to initialize the generator of the scrambling code of the second signal.

As an embodiment, SC-SFN-RNTI is used to initialize the generator of the scrambling code of the second signal.

As an embodiment, RNTIs other than C-RNTIs are used to initialize the generator of the scrambling code of the second signal.

As one embodiment, the second signal is a wireless signal.

As one embodiment, the second signal is a baseband signal.

As an embodiment, the first signal and the second signal are both multicast.

As one embodiment, the first signal and the second signal are both multicast.

As an embodiment, the first signal and the second signal are both broadcast.

As an embodiment, the first signal and the second signal occupy the same HARQ process number.

As an embodiment, the first signal and the second signal are both scrambled with an RNTI other than the C-RNTI.

As an embodiment, the first identity is used to initialize a generator of a scrambling code of the first signal.

As an embodiment, the first identity is used to initialize a generator of a scrambling code of the second signal.

As an embodiment, the first identity is one of a first set of candidate identities, the first set of candidate identities comprising the first candidate identity, the second candidate identity and the third candidate identity.

As a sub-embodiment of this embodiment, the first candidate identity is a non-negative integer.

As a sub-embodiment of this embodiment, the second candidate identification is a non-negative integer.

As a sub-embodiment of this embodiment, the third candidate identification is a non-negative integer.

As a sub-embodiment of this embodiment, the first candidate identity is an RNTI other than a C-RNTI.

As a sub-embodiment of this embodiment, the first candidate identity is a G-RNTI.

As a sub-embodiment of this embodiment, the first candidate identity is a GC-RNTI.

As a sub-embodiment of this embodiment, the first candidate identity is an SC-RNTI.

As a sub-embodiment of this embodiment, the first candidate identity is SC-PTM-RNTI.

As a sub-embodiment of this embodiment, the first candidate identity is an SC-SFN-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is an RNTI other than a C-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is a G-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is a GC-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is an SC-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is SC-PTM-RNTI.

As a sub-embodiment of this embodiment, the second candidate identity is an SC-SFN-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is an RNTI other than the C-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is a G-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is a GC-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is an SC-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is SC-PTM-RNTI.

As a sub-embodiment of this embodiment, the third candidate identity is an SC-SFN-RNTI.

As a sub-embodiment of this embodiment, none of the first candidate mark, the second candidate mark and the third candidate mark are the same.

As a sub-embodiment of this embodiment, the first candidate identity is associated to all terminals in a first terminal group, the second candidate identity is associated to all terminals in a second terminal group, any terminal in the first terminal group does not belong to the second terminal group and any terminal in the second terminal group does not belong to the first terminal group, and the third candidate identity is associated to all terminals in the first terminal group and all terminals in the second terminal group.

As an additional embodiment of this sub-embodiment, all terminals of the first group of terminals and all terminals of the second group of terminals support multicast transmission.

As an embodiment, the above sentence, the meaning that the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal includes: the time domain resource occupied by the second signal belongs to a time slot # n, and the time domain resource occupied by the second signal belongs to a time slot # (n + k); the k is indicated by physical layer dynamic signaling, or the k is indicated by RRC signaling, or the k is a predefined value; the k is a non-negative integer and the n is a non-negative integer.

As an embodiment, the first bit Block is a Transport Block (TB).

As an embodiment, the first bit Block is a CB (Code Block).

As an embodiment, the first bit Block is a CBG (Code Block Group).

As an embodiment, the first bit block occupies one HARQ process number.

As an embodiment, the second signaling carries NACK information only.

As an embodiment, the second signaling does not carry ACK information.

As an embodiment, the second signaling is used for feeding back the second signal.

As an embodiment, the second signaling carries HARQ-ACK information.

As an embodiment, the second signaling carries UCI.

As an embodiment, the physical layer channel carrying the second signaling comprises a PUCCH.

As an embodiment, the Physical layer Channel carrying the second signaling includes a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the second signaling occupies only one multicarrier symbol in the time domain.

As an embodiment, the second signaling occupies two multicarrier symbols in the time domain.

As an embodiment, the second signaling occupies one RB (Resource Block) in the frequency domain.

As an embodiment, the second signaling occupies consecutive 12 subcarriers in the frequency domain.

As an embodiment, the second signaling occupies 12 REs (Resource Elements, Resource granules).

As an embodiment, the second signaling occupies 24 REs.

As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

As an example, the multi-carrier symbol in this application is a CP-OFDM (Cyclic Prefix-OFDM) symbol.

As an embodiment, the multicarrier symbol in this application is a DFT-S-ofdm (discrete Fourier Transform decoding ofdm) symbol.

As an embodiment, the multicarrier symbol in this application is an SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

As an embodiment, the receiver of the first signal includes a terminal in a first terminal group configured with a first candidate identity and a terminal in a second terminal group configured with a second candidate identity; when the first node belongs to the first terminal group, the first identifier is equal to the first candidate identifier; when the first node belongs to the second terminal group, the first identifier is equal to the second candidate identifier; the first candidate tag and the second candidate tag are different, and both the first candidate tag and the second candidate tag are non-negative integers.

As an embodiment, the first identifier is one of a first candidate identifier and a second candidate identifier, and when the first identifier is the first candidate identifier, the first node determines to transmit the second signaling; and when the first identifier is the second candidate identifier, the first node determines to abandon sending the second signaling.

As an embodiment, the first identifier is one of a first candidate identifier, a second candidate identifier or a third candidate identifier, and when the first identifier is the first candidate identifier or the third candidate identifier, the first node determines to transmit the second signaling; and when the first identifier is the second candidate identifier, the first node determines to abandon sending the second signaling.

As an embodiment, the first identity is a G-RNTI.

As an embodiment, the first identity is a GC-RNTI.

As an embodiment, the first identity is an SC-RNTI.

As an embodiment, the first identity is SC-PTM-RNTI.

As an embodiment, the first identity is an SC-SFN-RNTI.

As an embodiment, the first measurement value is RSRP (Reference Signal Received Power).

As an embodiment, the first node determines to send the second signaling if the first measurement value is less than a first threshold, or the first node determines to refrain from sending the second signaling if the first measurement value is not less than the first threshold, and the unit of the first threshold is dBm (decibels).

As a sub-embodiment of this embodiment, the first measured value is not less than a first threshold, or the first node determines to abandon sending the second signaling, and the unit of the first threshold is dBm.

As a sub-embodiment of this embodiment, the first node determines to send the second signaling if the first measured value is greater than a first threshold, or the first measured value is not greater than the first threshold, and the first node determines to refrain from sending the second signaling, where the unit of the first threshold is dBm.

As a sub-embodiment of this embodiment, the first measured value is not greater than a first threshold, the first node determines to send the second signaling, or the first measured value is greater than the first threshold, the first node determines to abandon sending the second signaling, and the unit of the first threshold is dBm.

As an embodiment, the first identity is configured by a sender of the first signal.

As an embodiment, the first identifier is configured through RRC (Radio Resource Control) signaling.

As an embodiment, the first identifier is configured by a MAC (Medium Access Control) CE (Control Element).

As an embodiment, the first identifier is configured by an MCE (multi cell, multi case Coordination Entity).

As one embodiment, the first node self-determines the first measurement.

As one embodiment, the unit of the first measurement is dBm.

As an embodiment, the first node determines the first measurement value by a wireless signal transmitted by a sender of the first signal.

As a sub-embodiment of this embodiment, the wireless Signal transmitted by the second node includes an SSB (Synchronization Signal/physical broadcast channel Block).

As a sub-embodiment of this embodiment, the wireless Signal sent by the second node includes a CSI-RS (Channel State Information-Reference Signal).

As a sub-embodiment of this embodiment, the wireless Signal transmitted by the second node includes a DMRS (Demodulation Reference Signal).

As a sub-embodiment of this embodiment, the wireless signal transmitted by the second node includes a PDCCH (Physical Downlink Control Channel).

As a sub-embodiment of this embodiment, the wireless signal transmitted by the second node comprises the first signaling.

As a sub-embodiment of this embodiment, the wireless signal transmitted by the second node comprises the first signal.

As one embodiment, the first measurement value comprises RSRP.

As one embodiment, the first measurement value includes an RSRP of L-1 (layer 1).

As one embodiment, the first measurement value includes RSRP of L-3 (layer 3).

As one embodiment, the first measurement value comprises a higher layer filtered RSRP.

As an embodiment, the above sentence "the second signaling is used to indicate whether the first bit block is correctly decoded" means that: the second signaling is used to indicate that the first block of bits is correctly decoded.

As an embodiment, the above sentence "the second signaling is used to indicate whether the first bit block is correctly decoded" means that: the second signaling is used to indicate that the first bit block is error coded.

As an embodiment, the above sentence "the second signaling is used to indicate whether the first bit block is correctly decoded" means that: the second signaling is used to indicate whether the first block of bits is error coded.

As an embodiment, the format adopted by the second signaling is format 0.

As an embodiment, the format adopted by the second signaling is format 1.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 of 5G NR, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include a UE (User Equipment) 201, an NG-RAN (next generation radio access Network) 202, an EPC (Evolved Packet Core)/5G-CN (5G-Core Network,5G Core Network) 210, an HSS (Home Subscriber Server) 220, and an internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP, or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. UE201 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 connects to the EPC/5G-CN 210 through the S1/NG interface. The EPC/5G-CN 210 includes MME (Mobility Management Entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 211, other MMEs/AMF/UPF 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

As an embodiment, the UE201 corresponds to the first node in this application.

As an embodiment, the UE201 is a terminal capable of supporting multicast services.

As an embodiment, the UE201 can support transmission of PUCCH in NACK-only.

As an embodiment, the UE201 supports the multiplexing of the HARQ-ACK feeding back the unicast service and the HARQ-ACK feeding back the multicast service in one physical channel.

As an embodiment, the UE201 supports transmission of PTMs.

For one embodiment, the UE201 supports SC-PTM transmission.

As an embodiment, the gNB203 corresponds to the second node in this application.

As an embodiment, the gNB203 is a base station with the capability of supporting multicast services.

As an embodiment, the gNB203 can support reception of PUCCH at NACK-only.

As an embodiment, the gNB203 supports multiplexing HARQ-ACK for feeding back unicast traffic and HARQ-ACK for feeding back multicast traffic in one physical channel.

As an embodiment, the gNB203 supports transmission of PTMs.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gbb or V2X) and a second communication node device (gbb, RSU in UE or V2X) in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering data packets, and the PDCP sublayer 304 also provides handover support for a first communication node device to a second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. A RRC (Radio resource Control) sublayer 306 in layer 3 (layer L3) in the Control plane 300 is responsible for obtaining Radio resources (i.e., Radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 comprises layer 1 (layer L1) and layer 2 (layer L2), the radio protocol architecture in the user plane 350 for the first and second communication node devices being substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355 and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

The radio protocol architecture of fig. 3 applies to the second node in this application as an example.

As an embodiment, the PDCP304 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the PDCP354 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the first signal in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the first signal in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first signal in this application is generated in the RRC 306.

As an embodiment, the second signal in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the second signal in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the second signal in this application is generated in the RRC 306.

As an embodiment, the second signaling in this application is generated in the PHY301 or the PHY 351.

As an embodiment, the second signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the second signaling in this application is generated in the RRC 306.

As an embodiment, the first signaling in this application is generated in the PHY301 or the PHY 351.

As an embodiment, the first signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first signaling in this application is generated in the RRC 306.

As an embodiment, the third signaling in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the third signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the third signaling in this application is generated in the RRC 306.

As an embodiment, the fourth signaling in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the fourth signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the fourth signaling in this application is generated in the RRC 306.

As an embodiment, the first node is a terminal.

As an embodiment, the second node is a terminal.

As an example, the second node is an RSU (Road Side Unit).

As an embodiment, the second node is a Grouphead.

As an embodiment, the second node is a TRP (Transmitter Receiver Point).

As an embodiment, the second node is a Cell (Cell).

As an embodiment, the second node is an eNB.

As an embodiment, the second node is a base station.

As one embodiment, the second node is used to manage a plurality of base stations.

As an embodiment, the second node is a node for managing a plurality of cells.

As an embodiment, the second node is used to manage a plurality of TRPs (transmission reception points).

As an embodiment, the second node is an MCE.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

The first communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 450 means at least: first receiving a first signal; subsequently receiving a second signal and determining whether to transmit the second signaling; the time domain resource occupied by the second signal is used for determining the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: first receiving a first signal; subsequently receiving a second signal and determining whether to transmit the second signaling; the time domain resource occupied by the second signal is used for determining the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: first, a first signal is sent; then sending a second signal and monitoring the second signal; the time domain resource occupied by the second signal is used for determining the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; a recipient of the first signal comprises a first node by which the first signal was correctly received; at least one of a first identity or a first measurement value is used by the first node to determine whether to send the second signaling, the first identity is used to initialize a generator of a scrambling code of the second signal, and the first measurement value is a measurement value obtained by the first node through measurement; when the second signaling is sent by the first node, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: first, a first signal is sent; then sending a second signal and monitoring the second signal; time domain resources occupied by the second signal are used for determining time domain resources occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; a receiver of the first signal comprises a first node, the first signal being correctly received by the first node; at least one of a first identity or a first measurement value is used by the first node to determine whether to send the second signaling, the first identity is used to initialize a generator of a scrambling code of the second signal, and the first measurement value is a measurement value obtained by the first node through measurement; when the second signaling is sent by the first node, the second signaling is used to indicate whether the first block of bits is decoded correctly.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

For one embodiment, the first communication device 450 is a UE.

For one embodiment, the first communication device 450 is a terminal.

For one embodiment, the second communication device 410 is a base station.

For one embodiment, the second communication device 410 is a UE.

For one embodiment, the second communication device 410 is a network device.

For one embodiment, the second communication device 410 is a serving cell.

For one embodiment, the second communication device 410 is a TRP.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a first signal; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send a first signal.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a second signal; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send a second signal.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to determine whether to send second signaling; at least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are used to monitor for second signaling.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to send second signaling; at least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are configured to receive second signaling.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to send first signaling; at least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are configured to receive first signaling.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive third signaling; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send third signaling.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive fourth signaling; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are configured to send fourth signaling.

Example 5

Embodiment 5 illustrates a flow chart of a first signal, as shown in fig. 5. In FIG. 5, the first node U1 communicates with the second node N2 via a wireless link; it should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application.

For theFirst node U1Receiving a third signaling in step S10; receiving a first signal in step S11; transmitting a first signaling in step S12; receiving a fourth signaling in step S13; receiving a second signal in step S14; determining whether to transmit the second signaling in step S15; the second signaling is sent in step S16.

For theSecond node N2Transmitting a third signaling in step S20; transmitting a first signal in step S21; receiving a first signaling in step S22; transmitting fourth signaling in step S23; transmitting a second signal in step S24; the second signaling is monitored in step S25.

In embodiment 5, the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node U1; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly; the first signaling is used for indicating that the first signal is correctly received, and the time domain resource occupied by the first signal is used for determining the time domain resource occupied by the first signaling; the third signaling is used for indicating at least one of time domain resources or frequency domain resources occupied by the first signal; the fourth signaling is used to indicate at least one of time domain resources or frequency domain resources occupied by the second signal.

For one embodiment, the first node U1 determines to send the second signaling in step S15.

As an embodiment, the operation of the second node monitoring the second signaling in step S25 includes: receiving the second signaling.

For one embodiment, the first identifier is equal to a first candidate identifier, and the first node U1 determines to send the second signaling.

As an embodiment, the first measurement value belongs to a first measurement value interval, and the first node U1 determines to send the second signaling.

As an embodiment, the first identity is equal to a first candidate identity and the first measurement value belongs to a first measurement value interval, the first node U1 determines to send the second signaling.

For one embodiment, the first identity is not equal to the first candidate identity or the first measurement value does not belong to a first measurement value interval, and the first node U1 abandons sending the second signaling.

As an embodiment, the second node N2 configures the first identity to be equal to the first candidate identity in this application.

As an embodiment, RRC signaling indicates that the first node U1 is configured with the first candidate identity in this application.

As an embodiment, the MAC CE indicates that the first node U1 is configured with the first candidate identifier in the present application.

As an example, the above sentence "the first measurement value belongs to the first measurement value interval" means including: the first measurement is greater than a first threshold and not less than a second threshold, both the first threshold and the second threshold are in dBm, and the first threshold is less than the second threshold.

As an example, the above sentence "the first measurement value belongs to a first measurement value interval" means that: the first measurement is greater than a first threshold, all in dBm.

As an example, the above sentence "the first measurement value belongs to the first measurement value interval" means including: the first measurement is less than a second threshold, all in dBm.

As a sub-embodiment of the above three embodiments, the first threshold is fixed, or the first threshold is configured through RRC signaling.

As a sub-embodiment of the above three embodiments, the second threshold is fixed, or the second threshold is configured through RRC signaling.

As an embodiment, the first signaling carries HARQ-ACK information.

As an embodiment, the first signaling carries UCI.

As an embodiment, the physical layer channel carrying the first signaling comprises a PUCCH.

As one embodiment, the physical layer channel carrying the first signaling comprises a PUSCH.

As an embodiment, the first signaling occupies only one multicarrier symbol in the time domain.

As an embodiment, the first signaling occupies two multicarrier symbols in the time domain.

As an embodiment, the first signaling occupies one RB in the frequency domain.

As an embodiment, the first signaling occupies 12 consecutive subcarriers in the frequency domain.

As an embodiment, the first signaling occupies 12 REs.

As an embodiment, the first signaling occupies 24 REs.

As an embodiment, the above sentence, the meaning that the time domain resource occupied by the first signal is used to determine the time domain resource occupied by the first signal includes: the time domain resource occupied by the first signal belongs to a time slot # m, and the time domain resource occupied by the second signal belongs to a time slot # (m + q); the q is indicated by physical layer dynamic signaling, or the q is indicated by RRC signaling, or the q is a predefined value; the q is a non-negative integer and the m is a non-negative integer.

As an embodiment, the format adopted by the first signaling is format 0.

As an embodiment, the format adopted by the first signaling is format 1.

As one embodiment, the second signal is a P-th retransmission for the first bit block, P being a positive integer greater than a target threshold, the target threshold being a positive integer greater than 1.

As a sub-embodiment of this embodiment, the first node U1 determines whether to send the second signaling only when the P is greater than the target threshold.

As a sub-embodiment of this embodiment, the first node U1 sends the second signaling when P is not greater than the target threshold.

As a sub-embodiment of this embodiment, the target threshold is indicated by RRC signaling, or the target threshold is predefined, or the target threshold is fixed.

As an embodiment, the second signaling is used to indicate that the second signal is received in error, the first sequence is used to generate the second signaling, the first sequence is cyclically shifted to generate a target sequence, the target sequence is mapped to one multicarrier symbol occupied by the second signaling in a time domain, a first parameter is used to determine cyclic shift for generating the target sequence, and the first parameter is a non-negative integer smaller than the length of the first sequence; the first identifier is used to determine the first parameter or the first measurement value is used to determine the first parameter.

As a sub-embodiment of this embodiment, the first identifier is used to determine the first parameter.

As a sub-embodiment of this embodiment, the first identifier is equal to a first candidate identifier in this application and the first parameter is equal to 0; or the first identity is equal to a second candidate identity in the present application and the first parameter is equal to 6; the first candidate tag is different from the second candidate tag, and the first candidate tag and the second candidate tag are both non-negative integers.

As a sub-embodiment of this embodiment, the first measured value is used for determining the first parameter.

As a sub-embodiment of this embodiment, the first parameter is equal to 0 if the first measured value is less than the first threshold, or the first parameter is equal to 6 if the first measured value is not less than the first threshold, and the unit of the first threshold is dBm.

As a sub-embodiment of this embodiment, the first measured value is not less than a first threshold value, the first parameter is equal to 0, or the first measured value is less than a first threshold value, the first parameter is equal to 6, and the unit of the first threshold value is dBm.

As a sub-embodiment of this embodiment, the first parameter is equal to 0 if the first measurement is greater than the first threshold, or the first parameter is equal to 6 if the first measurement is not greater than the first threshold, the first threshold being in dBm.

As a sub-embodiment of this embodiment, the first measurement is not greater than a first threshold, the first parameter is equal to 0, or the first measurement is greater than a first threshold, the first parameter is equal to 6, the first threshold being in dBm.

As a sub-embodiment of this embodiment, the first parameter corresponds to m in TS 38.211 _cs 。

As a sub-embodiment of this embodiment, the second signal is a P-th retransmission for the first bit block, the first identifier and P are used together to determine the first parameter, and P is a positive integer.

As an additional embodiment of this sub-embodiment, the first flag is equal to the first candidate flag in the present application, and P is an odd number, and the first parameter is equal to 0; or the first flag is equal to the first candidate flag in this application, and P is an even number, and the first parameter is equal to 6.

As an additional embodiment of this sub-embodiment, the first flag is equal to the second candidate flag in the present application, and P is an odd number, and the first parameter is equal to 6; or the first flag is equal to a second candidate flag in the present application, and P is an even number, and the first parameter is equal to 0.

As a sub-embodiment of this embodiment, the second signal is a P-th retransmission for the first bit block, the first measurement and the P are used together to determine the first parameter.

As an additional embodiment of this sub-embodiment, said first measurement value belongs to said first measurement region in the present application and said P is an odd number, said first parameter is equal to 0; or the first measurement value belongs to the first measurement region in this application and P is an even number, the first parameter is equal to 6.

As an additional embodiment of this sub-embodiment, said first measurement value does not belong to said first measurement region in the present application and said P is an odd number, said first parameter is equal to 6; or the first measurement value does not belong to the first measurement region in this application, and P is an even number, the first parameter is equal to 0.

As a sub-embodiment of this embodiment, the first Sequence is a Base Sequence.

As a sub-embodiment of this embodiment, the length of the first sequence is 12.

As a sub-embodiment of this embodiment, the first sequence is a ZC (Zedoff-Chu) sequence.

As a sub-embodiment of this embodiment, the first sequence is a pseudo-random sequence.

As a sub-embodiment of this embodiment, the first sequence is cyclically shifted to generate X1 sequences, any two sequences of the X1 sequences are not the same, and X1 is a positive integer greater than 1; any one of the X1 sequences is mapped in the time domain onto at least one of Y1 multicarrier symbols, and the second signaling occupies the Y1 multicarrier symbols in the time domain.

As a sub-embodiment of this embodiment, the target sequence is one of the X1 sequences.

As a sub-embodiment of this embodiment, the first parameter relates to how to determine the target sequence from the X1 sequences.

As a sub-embodiment of this embodiment, the first parameter is used to determine the target sequence from the X1 sequences.

As a sub-embodiment of this embodiment, said X1 is equal to 2.

As a sub-embodiment of this embodiment, said Y1 is equal to 1.

As a sub-embodiment of this embodiment, said Y1 is equal to 2.

As a sub-embodiment of this embodiment, the meaning that the first sequence is used to generate the second signaling in the above sentence includes: and generating the second signaling after the first sequence is subjected to cyclic shift.

As a sub-embodiment of this embodiment, the meaning that the first sequence is used to generate the second signaling in the above sentence includes: the first sequence is mapped to REs (Resource Elements, Resource granules) occupied by the second signaling after cyclic shift.

As a sub-embodiment of this embodiment, the meaning that the first sequence is used to generate the second signaling in the above sentence includes: the first sequence is Phase rotated (Phase Rotation) to generate the second signaling.

As a sub-embodiment of this embodiment, the meaning that the first sequence is used to generate the second signaling in the above sentence includes: and mapping the first sequence to the REs occupied by the second signaling after phase rotation.

As an embodiment, the transmission power value of the second signaling is equal to a first power value, the first parameter is used to determine a first reference power value, and the first reference power value is used to determine the first power value.

As a sub-embodiment of this embodiment, the first reference power value is P in TS 38.213 _{0_PUCCH} 。

As a sub-embodiment of this embodiment, the first reference power value is P in TS 38.213 _{0_PUCCH,b,f,c} (q _u )。

As a sub-embodiment of this embodiment, the first power value is the smaller of a first upper limit power value and a second power value, the first upper limit power value is the maximum output power (output power) configured by the first node in the PUCCH transmission opportunity occupied by the second signaling and on the carrier corresponding to the serving cell where the second signaling is located, and the second power value is linearly related to the first reference power value.

As an additional embodiment of this sub-embodiment, the linear correlation coefficient of the second power value with the first reference power value is equal to 1.

As a sub-embodiment of this embodiment, the second power value is related to a path loss of a sender of the first signal to the first node.

As a sub-embodiment of this embodiment, the unit of the first reference power value is dBm.

As a sub-embodiment of this embodiment, the first parameter is equal to 0, and the first reference power value is equal to the first alternative power value; or, the first parameter is equal to 6, and the first reference power value is equal to the second alternative power value; the first candidate power value and the second candidate power value are different, and a unit of each of the first candidate power value and the second candidate power value is dBm.

As an embodiment, the third signaling is a DCI.

As an embodiment, the Physical layer Channel carrying the third signaling includes a PDCCH (Physical Downlink Control Channel).

As an embodiment, a Cyclic Redundancy Check (CRC) included in the third signaling is scrambled by the first identifier.

As an embodiment, the CRC included in the third signaling is scrambled by a C-RNTI.

As an embodiment, the third signaling is used to indicate a time domain resource occupied by the first signal.

As an embodiment, the third signaling is used to indicate frequency domain resources occupied by the first signal.

As an embodiment, the third signaling is used for scheduling the first signal.

As an embodiment, the third signaling is used to indicate a HARQ process number occupied by the first signal.

As an embodiment, the fourth signaling is a DCI.

As an embodiment, a physical layer channel carrying the fourth signaling comprises a PDCCH.

As an embodiment, a CRC included in the fourth signaling is scrambled by the first identity.

As an embodiment, a CRC included in the fourth signaling is scrambled by a C-RNTI.

As an embodiment, the fourth signaling is used to indicate a time domain resource occupied by the first signal.

As an embodiment, the fourth signaling is used to indicate frequency domain resources occupied by the first signal.

As an embodiment, the fourth signaling is used for scheduling the first signal.

As an embodiment, the fourth signaling is used to indicate a HARQ process number occupied by the first signal.

As an embodiment, the third signaling is used to indicate time-frequency resources occupied by the first signaling.

As an embodiment, the fourth signaling is used to indicate time-frequency resources occupied by the second signaling.

As an embodiment, the fourth signaling is used to trigger sending of the second signaling, and the first node determines whether to send the second signaling according to at least one of the first identifier or the first measurement value.

As an embodiment, the third signaling and the fourth signaling indicate the same HARQ process number.

As one embodiment, the monitoring includes receiving.

As one embodiment, the monitoring includes blind detection.

As one embodiment, the monitoring includes demodulating.

As one embodiment, the monitoring includes energy detection.

As one embodiment, the monitoring includes coherent detection.

Example 6

Embodiment 6 illustrates a schematic diagram of second signaling, as shown in fig. 6. In fig. 6, the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal, the second signal is received by M1 terminals, the first node is one of the M1 terminals, and M1 is a positive integer greater than 1.

As an embodiment, the fourth signaling in this application is used to indicate a time interval between the time domain resource occupied by the second signaling and the time domain resource occupied by the second signal.

As an embodiment, the fourth signaling in this application is used to indicate a time slot difference between a time slot occupied by the second signaling and a time slot occupied by the second signal.

As an embodiment, the fourth signaling in this application is used to indicate a PUCCH Resource (Resource) occupied by the second signaling.

As an embodiment, the fourth signaling in this application is used to indicate a PUCCH Resource Set (Resource Set) occupied by the second signaling.

As an embodiment, the M1 terminals all receive the fourth signaling.

Example 7

Example 7 illustrates a schematic diagram of a first marker, as shown in fig. 7. In fig. 7, the recipients of the first signal include M1 terminals, the M1 terminals are grouped into a first terminal group and a second terminal group, the terminals in the first terminal group are configured with a first candidate identity, and the terminals in the second terminal group are configured with a second candidate identity. The second node shown in the figure provides PTM services for the M1 terminals, and the first node in this application is one of the M1 terminals; the M1 is a positive integer greater than 1.

As an embodiment, the first terminal group and the second terminal group correspond to different service types respectively.

As an embodiment, the first terminal group and the second terminal group respectively correspond to different priorities (priorities).

As an embodiment, the first terminal group and the second terminal group respectively correspond to different maximum retransmission times.

As an embodiment, the first node belongs to the first terminal group, and the first identifier is equal to the first candidate identifier.

As an embodiment, the first node belongs to the second terminal group, and the first identifier is equal to the second candidate identifier.

As an embodiment, the first identifier is equal to the first candidate identifier, and the first node transmits the second signaling.

As an embodiment, the first identifier is equal to the second candidate identifier, and the first node abstains from sending the second signaling.

Example 8

Embodiment 8 illustrates a schematic view of another first marker, as shown in fig. 8. In fig. 8, the recipients of the first signal include M1 terminals, the M1 terminals are grouped into a first terminal group and a second terminal group, the terminals in the first terminal group are configured with a first candidate identity, the terminals in the second terminal group are configured with a second candidate identity, and the terminals in the first terminal group and the terminals in the second terminal group are further configured with a third candidate identity. The second node shown in the figure provides PTM services for the M1 terminals, and the first node in this application is one of the M1 terminals.

As an embodiment, the first terminal group and the second terminal group correspond to different service types, respectively.

As an embodiment, the first node belongs to the first terminal group, and the first identifier is equal to one of the first candidate identifier or the third candidate identifier.

As a sub-embodiment of this embodiment, physical layer dynamic signaling is used to indicate whether the first identity is equal to the first candidate identity or the third candidate identity.

As an embodiment, the first node belongs to the second terminal group, and the first identifier is equal to one of the second candidate identifier or the third candidate identifier.

As a sub-embodiment of this embodiment, physical layer dynamic signaling is used to indicate whether the first identity is equal to the second candidate identity or the third candidate identity.

As an embodiment, the first identifier is equal to the first candidate identifier or the third candidate identifier, and the first node transmits the second signaling.

As an embodiment, the first identifier is equal to the second candidate identifier or the third candidate identifier, and the first node abstains from sending the second signaling.

Example 9

Example 9 illustrates a schematic of a first measurement, as shown in fig. 9. In fig. 9, when the first measurement value belongs to a first RSRP region, the first node abandons sending the second signaling; and when the first measurement value belongs to a second RSRP region, the first node sends the second signaling. The part inside the dashed box shown in the figure corresponds to the first RSRP region, and the part outside the dashed box shown in the figure corresponds to the second RSRP region; the second node provides the PTM service for the first node.

As an embodiment, the first RSRP region is the first measurement value interval in the present application.

Example 10

Example 10 illustrates a schematic diagram of a first parameter, as shown in fig. 10. In fig. 10, the sum of the first parameter, the second parameter and the third parameter is equal to a first value, and the cyclic shift adopted by the first sequence is linearly related to the remainder of the division of the first value by the target integer; the target integer is equal to the number of subcarriers included in one resource block occupied by the second signaling; the second parameter is related to a format adopted by the second signaling, and the third parameter is related to a time domain resource occupied by the first sequence. In FIG. 10, the first parameter corresponds to m _cs The second parameter corresponds to m ₀ Said third parameter corresponds to

In the figure

Denotes the number of sub-carriers occupied by one RB, α in the figure _l Represents a cyclic prefix employed by the first sequence.

Example 11

Example 11 illustrates a schematic diagram of cyclic shift, as shown in fig. 11. In fig. 11, a point a on the circle in the figure corresponds to the cyclic shift when the first parameter is equal to the first candidate parameter, and a point B on the circle in the figure corresponds to the cyclic shift when the first parameter is equal to the second candidate parameter; the first candidate parameter and the second candidate parameter are non-negative integers and are not equal; the first candidate parameter and the second candidate parameter are two different candidate parameters among the X1 candidate parameters in the present application.

As an embodiment, the first candidate parameter is equal to 0 and the second candidate parameter is equal to 6.

As an embodiment, the first candidate parameter is equal to 6, and the second candidate parameter is equal to 0.

For one embodiment, the first flag is equal to the first candidate flag, and the first parameter is equal to the first candidate parameter; or the first identifier is equal to the second candidate identifier and the first parameter is equal to the second candidate parameter.

As an embodiment, the first measurement value belongs to the first measurement value interval, and the first parameter is equal to the first candidate parameter; or the first measured value does not belong to the first measured value interval, and the first parameter is equal to the second candidate parameter.

As an embodiment, the first measurement value belongs to the first RSRP region, the first parameter is equal to the first alternative parameter; or the first measurement value belongs to the second RSRP region, the first parameter being equal to the second alternative parameter.

Example 12

Embodiment 12 illustrates a schematic diagram of second signaling generation, as shown in fig. 12. In fig. 12, the second signaling carries information bits of a target bit block, which is used to indicate whether the second signal is correctly received; and the target bit block obtains a target sequence after generating a base sequence and determining cyclic shift, and then the target sequence is mapped to the REs occupied by the second signaling through physical resource mapping.

As an embodiment, the target bit block comprises only 1 information bit.

As an embodiment, the target bit block includes a plurality of information bits.

As an embodiment, the target sequence is used for generating the second signaling.

Example 13

Embodiment 13 is a block diagram illustrating the structure of a first node, as shown in fig. 13. In fig. 13, a first node 1300 includes a first transceiver 1301 and a second transceiver 1302.

A first transceiver 1301 which receives a first signal;

a second transceiver 1302 for receiving the second signal and determining whether to transmit the second signal;

in embodiment 13, the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; the first signal is correctly received by the first node; at least one of a first identifier used to initialize a generator of a scrambling code of the second signal or a first measurement value used to determine whether to transmit the second signaling, the first measurement value being a measurement value measured by the first node; when the second signaling is sent, the second signaling is used to indicate whether the first block of bits is decoded correctly.

For an embodiment, the second transceiver 1302 transmits the second signaling; the first identity is equal to a first candidate identity; or the first measurement value belongs to a first measurement value interval.

For one embodiment, the first transceiver 1301 transmits a first signaling; the first signaling is used for indicating that the first signal is correctly received, and the time domain resource occupied by the first signal is used for determining the time domain resource occupied by the first signaling.

As one embodiment, the second signal is a P-th retransmission for the first bit block, the P being a positive integer greater than a target threshold, the target threshold being a positive integer greater than 1; the first node determines whether to send the second signaling only if the P is greater than the target threshold.

For one embodiment, the first transceiver 1301 receives the third signaling and the second transceiver 1302 receives the fourth signaling; the third signaling is used for indicating at least one of time domain resources or frequency domain resources occupied by the first signal; the fourth signaling is used to indicate at least one of a time domain resource or a frequency domain resource occupied by the second signal.

The first transceiver 1301 includes at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the multi-antenna transmit processor 457, the receive processor 456, the transmit processor 468, and the controller/processor 459 of embodiment 4.

For one embodiment, the second transceiver 1302 comprises at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the multi-antenna transmit processor 457, the receive processor 456, the transmit processor 468, and the controller/processor 459 of embodiment 4.

Example 14

Embodiment 14 illustrates a block diagram of the structure in a second node, as shown in fig. 14. In fig. 14, the second node 1400 comprises a third transceiver 1401 and a fourth transceiver 1402.

A third transceiver 1401 for transmitting the first signal;

a fourth transceiver 1402 that transmits the second signal and monitors the second signaling;

in embodiment 14, the time domain resource occupied by the second signal is used to determine the time domain resource occupied by the second signal; the first signal carries a first block of bits, the second signal carries the first block of bits, the first block of bits comprising a positive integer number of bits greater than 1; a recipient of the first signal comprises a first node by which the first signal was correctly received; at least one of a first identity or a first measurement value is used by the first node to determine whether to send the second signaling, the first identity is used to initialize a generator of a scrambling code of the second signal, and the first measurement value is a measurement value obtained by the first node through measurement; when the second signaling is sent by the first node, the second signaling is used to indicate whether the first block of bits is decoded correctly.

For one embodiment, the fourth transceiver 1402 receives the second signaling; the first identity is equal to a first candidate identity; or the first measurement value belongs to a first measurement value interval.

As an embodiment, the third transceiver 1401 receives first signalling; the first signaling is used for indicating that the first signal is correctly received, and the time domain resource occupied by the first signal is used for determining the time domain resource occupied by the first signaling.

As an embodiment, the second signal is for a P-th retransmission of the first bit block, the P being a positive integer greater than a target threshold, the target threshold being a positive integer greater than 1; the first node determines whether to send the second signaling only if the P is greater than the target threshold.

As an example, the third transceiver 1401 transmits third signalling; the fourth transceiver 1402 transmits fourth signaling; the third signaling is used for indicating at least one of time domain resources or frequency domain resources occupied by the first signal; the fourth signaling is used to indicate at least one of a time domain resource or a frequency domain resource occupied by the second signal.

As an embodiment, the third transceiver 1401 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmission processor 471, the multi-antenna reception processor 472, the transmission processor 416, the reception processor 470, and the controller/processor 475 in embodiment 4.

For one embodiment, the fourth transceiver 1402 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, vehicle, RSU, aircraft, unmanned aerial vehicle, remote control plane. The second node in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a small cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an aerial base station, an RSU, an unmanned aerial vehicle, a test device, a transceiver device or a signaling tester simulating a partial function of a base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node for use in wireless communications, comprising:

a first transceiver to receive a first signal;

2. The first node of claim 1, wherein the second transceiver transmits second signaling; the first identity is equal to a first candidate identity; or the first measurement value belongs to a first measurement value interval.

3. The first node according to claim 1 or 2, characterized in that the first transceiver transmits first signaling; the first signaling is used for indicating that the first signal is correctly received, and the time domain resource occupied by the first signal is used for determining the time domain resource occupied by the first signaling.

4. The first node according to any of claims 1-3, wherein the second signal is a P-th retransmission for the first bit block, P being a positive integer greater than a target threshold, the target threshold being a positive integer greater than 1; the first node determines whether to send the second signaling only when the P is greater than the target threshold.

5. The first node according to any of claims 1 to 4, wherein the second signaling is used to indicate that the second signal is received in error, a first sequence is used to generate the second signaling, the first sequence is cyclically shifted to generate a target sequence, the target sequence is mapped to one multicarrier symbol occupied by the second signaling in a time domain, a first parameter is used to determine the cyclic shift for generating the target sequence, and the first parameter is a non-negative integer smaller than the length of the first sequence; the first identifier is used to determine the first parameter or the first measurement value is used to determine the first parameter.

6. The first node of claim 5, wherein the second signaling has a transmit power value equal to a first power value, wherein the first parameter is used to determine a first reference power value, and wherein the first reference power value is used to determine the first power value.

7. The first node of any of claims 1-6, wherein the first transceiver receives third signaling and the second transceiver receives fourth signaling; the third signaling is used for indicating at least one of time domain resources or frequency domain resources occupied by the first signal; the fourth signaling is used to indicate at least one of a time domain resource or a frequency domain resource occupied by the second signal.

8. A second node for use in wireless communications, comprising:

a third transceiver to transmit the first signal;

9. A method in a first node in wireless communication, comprising:

receiving a first signal;

10. A method in a second node in wireless communication, comprising:

transmitting a first signal;

sending a second signal and monitoring a second signaling;