CN113891254A

CN113891254A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN113891254A
Application number: CN202010636090.9A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-01-04

Abstract

The invention discloses a method and an apparatus in a node used for wireless communication. A first node receives a first signaling group, wherein the first signaling group comprises at least one signaling; sending a second signaling; and sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service. The second signaling indicates the second service list to realize the counting processing of the relay network and avoid forwarding the first signaling group one by one, thereby reducing signaling overhead and energy consumption.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to transmission methods and apparatus in wireless communication systems, and more particularly, to multicast and broadcast related transmission schemes and apparatus in wireless communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New Radio interface (NR) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR is started over WI (Work Item) where NR passes through 75 sessions of 3GPP RAN.

Relay communication is a common method in cellular network communication, and data of a source node reaches a remote node through forwarding of a relay node. The source node and the remote node are typically a base station device and a user equipment, and the relay node may be a network device or a user equipment. Common relay communication includes layer 1 relay and layer 2 relay, where the former relay node forwards information bits restored in a physical layer, and the latter relay node forwards information bits restored in layer 2.

Broadcast (Broadcast)/Multicast (Multicast) transmission techniques are widely used in cellular systems, such as MBMS (Multimedia Broadcast Multicast Service) in 4G LTE (Long Term Evolution) system. The broadcast/multicast transmission is mainly characterized in that the network equipment can simultaneously transmit the same broadcast/multicast data to a plurality of terminal nodes, and the broadcast/multicast transmission has important value in scenes such as broadcast television, disaster early warning, emergency service, industrial control, vehicle networking and the like. In LTE MBMS, an eNB schedules a plurality of terminal nodes to receive a PDSCH (Physical Downlink Shared Channel) or a PMCH (Physical Multicast Channel) containing broadcast/Multicast data through one PDCCH (Physical Downlink Control Channel). The broadcast/multicast-related identifiers include an SC-RNTI (Single Cell RNTI ), an SC-N-RNTI (Single Cell Notification RNTI ) and a G-RNTI (Group RNTI, Group RNTI).

The standardization Work for the NR to provide Multicast and broadcast services in a Single Cell Point-to-MultiPoint (SC-PTM) manner is started after the WI (Work Item) of the NR Multicast is passed through the 3GPP RAN #86 at the next meeting.

Disclosure of Invention

The inventor finds, through research, that there is no mechanism for querying the receiving state of the MBMS service in the relay network, so that the receiving state of the MBMS service in the relay network cannot be obtained, and the transmission mode of the MBMS service cannot be adjusted according to the receiving state of the MBMS service in a single cell.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses the scenario of communication between the network device and the terminal device as an example, the present application is also applicable to other communication scenarios (for example, the scenario of terminal-to-terminal communication), and achieves similar technical effects. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to scenarios of communication between network devices and terminals and terminal-to-terminal communication) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to a second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

As an example, the term (telematics) in the present application is explained with reference to the definition of the specification protocol TS36 series of 3 GPP.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS38 series.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS37 series.

As an example, the terms in the present application are explained with reference to the definition of the specification protocol of IEEE (Institute of Electrical and Electronics Engineers).

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

receiving a first signaling group, the first signaling group comprising at least one signaling;

sending a second signaling; sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service;

the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

As an embodiment, any one of the signaling in the first signaling group includes one RRC signaling.

As an embodiment, any one of the first signaling group includes one PC5 signaling.

As an embodiment, the second signaling comprises an RRC signaling.

As an embodiment, any service identity in the first service identity list refers to TMGI (Temporary Mobile Group identity).

As an embodiment, any MBMS service of the first set of MBMS services is Unicast (Unicast) transmitted.

As an embodiment, any MBMS service of the first set of MBMS services is multicast (Groupcast) transmitted.

As an embodiment, any MBMS service of the first set of MBMS services is relayed by the first node.

For one embodiment, the intended node refers to a correspondent node that is receiving or interested in receiving any of the service identities in the first list of service identities.

For one embodiment, any one of the first signaling group is sent by the intended node.

Specifically, according to an aspect of the present application, the method is characterized by further comprising:

the first signaling group comprises Q1 signaling, the Q1 signaling being transmitted by Q1 communication nodes, respectively, the Q1 being a positive integer greater than 1; the Q1 signaling respectively indicates Q1 sub-lists of service identities, any one of the Q1 sub-lists of service identities includes at least one service identity, and any one of the Q1 sub-lists of service identities belongs to the first sub-list of service identities; the number of the intended nodes includes the number of the Q1 service identity sublists including the service identity sublist of any one of the service identities in the second service identity list.

and receiving the first MBMS service set.

receiving a third signaling;

wherein the third signaling is used to trigger the second signaling.

As an embodiment, the third signaling comprises an RRC signaling.

As an embodiment, the third signaling comprises an MBMSCountingRequest message.

As an embodiment, the second signaling comprises an mbmscountresponse message.

the first signaling indicates a third service identity list, the third service identity list includes at least one service identity, each service identity in the third service identity list indicates an MBMS service, the third service identity list is a subset of the first service identity list, and any service identity in the third service identity list does not belong to the second service identity list.

As an example, the present application has the following advantages: the second signaling indicates the second service list to realize the counting processing of the relay network and avoid forwarding the first signaling group one by one, thereby reducing signaling overhead and energy consumption.

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

receiving a second signaling;

the second signaling indicates a second service identity list, the second service identity list includes at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the first service identity list is indicated by a first signaling group, and the first signaling group comprises at least one signaling; the first set of MBMS services includes at least one MBMS service. Any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list, and the first MBMS service set is sent.

The application discloses a method in a third node used for wireless communication, characterized by comprising:

transmitting at least one signaling in the first signaling group;

receiving at least one MBMS service in a first MBMS service set;

wherein the first signaling group comprises at least one signaling; the first MBMS service set is sent, and the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; a second service identity list is a subset of the first service identity list, each service identity in the second service identity list indicates an MBMS service, and the second service identity list is indicated by a second signaling; any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

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

a first receiver to receive a first signaling group, the first signaling group comprising at least one signaling;

a first transmitter for transmitting a second signaling; sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service;

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

a second receiver receiving a second signaling;

The application discloses a third node used for wireless communication, comprising:

a third transmitter for transmitting at least one signaling in the first signaling group;

a third receiver, for receiving at least one MBMS service in the first MBMS service set;

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 a radio protocol architecture of a user plane and a 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 wireless signal transmission flow diagram according to an embodiment of the present application;

FIG. 6 illustrates a wireless signal transmission flow diagram according to yet another embodiment of the present application;

FIG. 7 illustrates a wireless signal transmission flow diagram according to yet another embodiment of the present application;

FIG. 8 shows a block diagram of a processing arrangement for use in the first node;

FIG. 9 shows a block diagram of a processing means for use in the second node;

fig. 10 shows a block diagram of a processing means for use in the third node.

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 according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.

In embodiment 1, a first node in the present application receives a first signaling group in step S101, where the first signaling group includes at least one signaling; transmitting a second signaling in step S102; in step S103, a first MBMS service set is sent, where the first MBMS service set includes at least one MBMS service.

As an embodiment, any one of the signaling in the first signaling group includes all or part of one RRC signaling.

As an embodiment, any one of the signaling in the first signaling group includes one or more fields (fields) in an RRC IE (Information Element).

As an embodiment, any one of the first signaling group includes all or part of one PC5 signaling.

As an embodiment, any one of the signaling in the first signaling group includes a TMGI Monitoring Request message.

As an embodiment, any one of the signaling in the first signaling group includes one or more fields in a MAC CE (Control Element).

As an embodiment, any one of the signaling in the first signaling group includes an Adaptation Layer (Adaptation Layer) signaling.

As an embodiment, any one of the first signaling group includes a higher layer signaling.

As an embodiment, any one of the first signaling group is transmitted on the PC5 interface.

As an embodiment, the second signaling comprises an RRC signaling.

As an embodiment, the second signaling comprises all or part of one RRC signaling.

As an embodiment, the second signaling includes one or more fields (fields) in an RRC IE (Information Element).

As an embodiment, the second signaling comprises a higher layer signaling.

As an embodiment, the second signaling is transmitted over a Uu interface.

As an embodiment, the phrase that each service identity in the second service identity list indicates an MBMS service includes: each service identity in the second service identity list indicates an MBMS service that a user is interested in or receiving.

As an embodiment, the phrase that each service identity in the second service identity list indicates an MBMS service includes: each service identity in the second service identity list indicates an MBMS service in which a user is interested.

As an embodiment, the phrase that each service identity in the second service identity list indicates an MBMS service includes: each service identity in the second service identity list indicates an MBMS service being received by a user.

As an embodiment, any MBMS service of the first set of MBMS services is Multicast (Multicast) transmitted.

As an embodiment, any MBMS service of the first set of MBMS services is Broadcast (Broadcast) transmitted.

As an embodiment, any MBMS service of the first set of MBMS services is forwarded by the first node.

As an embodiment, any service identity in the first service identity list refers to G-RNTI.

As an embodiment, any service identity in the first service identity list is a link layer identity.

As an embodiment, the phrase the second list of service identities is a subset of the first list of service identities, comprising: each service identity in the second list of service identities belongs to the first list of service identities.

As an embodiment, the phrase the second list of service identities is a subset of the first list of service identities, comprising: the service identity included in the second service identity list is the same as the service identity included in the first service identity list.

As an embodiment, any service identity in the second service identity list refers to TMGI (Temporary Mobile Group identity).

As an embodiment, any service identity in the second service identity list refers to G-RNTI.

As an embodiment, any service identity in the second service identity list is a link layer identity.

For one embodiment, the intended node refers to a node that is receiving or interested in receiving any of the service identities in the first list of service identities.

For one embodiment, the phrase the second signaling is used to indicate a number of intended nodes comprising: the second signaling is used to indicate an identity of the intended node.

As a sub-embodiment of the above embodiment, the identity of the intended node comprises a link layer identity.

As a sub-embodiment of the above embodiment, the intention node identity includes a number of bits that is a positive integer multiple of 8.

As a sub-embodiment of the above embodiment, the intent node identity comprises 24 bits.

For one embodiment, the number of intentional nodes includes the first node for any business identity in the second business identity list.

For one embodiment, the number of the intentional nodes does not include the first node for any of the business identities in the second business identity list.

As an embodiment, the first signaling indicates a third service identity list, where the third service identity list includes at least one service identity, each service identity in the third service identity list indicates an MBMS service, the third service identity list is a subset of the first service identity list, and any service identity in the third service identity list does not belong to the second service identity list.

As a sub-embodiment of the foregoing embodiment, the second service identity list indicates services that the user is receiving, and the third service identity list indicates services that the user is interested in receiving.

As a sub-embodiment of the foregoing embodiment, the second service identity list indicates a high-priority service, and the third service identity list indicates a low-priority service.

As a sub-embodiment of the foregoing embodiment, a service indicated by any service identity in the second service identity list has a higher scheduling priority than a service indicated by any service identity in the third service identity list.

As a sub-embodiment of the foregoing embodiment, when the resource is limited, the service indicated by any service identity in the third service identity list stops sending earlier than the service indicated by any service identity in the second service identity list.

As an embodiment, the step S102 of sending the second signaling is before the step S103 of sending the first MBMS service set.

As an embodiment, the step S102 of sending the second signaling is after the step S103 of sending the first MBMS service set.

As an example, the present application has the following advantages: the second signaling indicates the second service list to avoid forwarding the first signaling group, thereby reducing signaling overhead and energy consumption.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System )/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/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 (transmitting receiving node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC 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. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication 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 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 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 and the UE241 are connected through a Reference Point (Reference Point) of the PC 5.

As an embodiment, the ProSe function 250 is connected with the UE201 and the UE241 through PC3 reference points, respectively.

As an embodiment, the ProSe function 250 is connected with the ProSe application server 230 through a PC2 reference point.

As an embodiment, the ProSe application server 230 is connected with the ProSe application of the UE201 and the ProSe application of the UE241 through a PC1 reference point, respectively.

As an embodiment, the UE201 and the gNB203 are connected through a Uu interface.

As an embodiment, the wireless link between the UE201 and the UE241 corresponds to a Sidelink (SL) in the present application.

As an embodiment, the radio link from the UE201 to the NR node B is an uplink.

As an embodiment, the radio link from the NR node B to the UE201 is the downlink.

As an embodiment, the first node, the second node, and the third node in this application are the UE201, the gNB203, and the UE241, respectively.

As an embodiment, the first node and the second node in the present application are UE201 and UE241, respectively.

As an embodiment, the first node and the third node in the present application are UE201 and UE241, respectively.

As an embodiment, the second node and the third node in the present application are UE201 and UE241, respectively.

As an embodiment, the UE201 supports sidelink transmission.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports the Uu interface.

As an embodiment, the UE201 supports relay transmission.

As an embodiment, the UE241 supports relay transmission.

For one embodiment, the UE241 supports sidelink transmission.

As an embodiment, the UE241 supports a PC5 interface.

As an embodiment, the gNB203 supports the Uu interface.

As an example, the gNB203 supports Integrated Access and Backhaul (IAB).

As an example, the gNB203 is a macro cellular (MarcoCellular) base station.

As an embodiment, the gNB203 is a Micro Cell (Micro Cell) base station.

As an embodiment, the gNB203 is a pico cell (PicoCell) base station.

As an embodiment, the gNB203 is a home base station (Femtocell).

As an embodiment, the gNB203 is a base station device supporting a large delay difference.

As an example, the gNB203 is a flight platform device.

As an embodiment, the gNB203 is a satellite device.

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 first node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) or the control plane 300 between two UEs 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 the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the 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 node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a second node by a first node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The 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 node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is 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 node 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 embodiment, the entities of the multiple sub-layers of the control plane in fig. 3 constitute an SRB (Signaling Radio bearer) in the vertical direction.

As an embodiment, entities of the plurality of sublayers of the control plane in fig. 3 constitute a DRB (Data Radio bearer) in a vertical direction.

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

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

As an example, the radio protocol architecture in fig. 3 is applicable to the third node in the present application.

As an example, the

L2 layer

305 or 355 belongs to a higher layer.

As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

As an example, the PDCP sublayer 354 belongs to a higher layer.

As an example, the SDAP sublayer 356 belongs to higher layers.

As an example, the L3 level belongs to a higher layer.

As an example, the MAC sublayer 302 belongs to a higher layer.

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

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

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

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

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

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

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

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

As an embodiment, the first signaling group in this application is generated in the MAC sublayer 302.

As an embodiment, any signaling in the first signaling group in this application is generated in the MAC sublayer 302.

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 410 and a second communication device 450 communicating with each other in an access network.

The first communications 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.

The second 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.

In the transmission from the first communication device 410 to the second communication device 450, at the first 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 first 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 second communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the second 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 450 and 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 first communications device 410 to the second communications device 450, at the second communications device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is 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 second 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 first 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 first 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 second communications device 450 to the first communications device 410, a data source 467 is used at the second 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 transmit function at the first communications apparatus 410 described in the transmission from the first communications apparatus 410 to the second 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 first 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 second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality at the second communication device 450 described in the transmission from the first communication device 410 to the second 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 transmissions from the second communications device 450 to the first 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 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: receiving a first signaling group, the first signaling group comprising at least one signaling; sending a second signaling; sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

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: receiving a first signaling group, the first signaling group comprising at least one signaling; sending a second signaling; sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

As an embodiment, the second communication device 410 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: receiving a second signaling; the second signaling indicates a second service identity list, the second service identity list includes at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the first service identity list is indicated by a first signaling group, and the first signaling group comprises at least one signaling; the first set of MBMS services includes at least one MBMS service. Any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list, and the first MBMS service set is sent.

As an embodiment, the second communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a second signaling; the second signaling indicates a second service identity list, the second service identity list includes at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the first service identity list is indicated by a first signaling group, and the first signaling group comprises at least one signaling; the first set of MBMS services includes at least one MBMS service. Any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list, and the first MBMS service set is sent.

As an embodiment, the second communication device 410 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: transmitting at least one signaling in the first signaling group; receiving at least one MBMS service in a first MBMS service set; wherein the first signaling group comprises at least one signaling; the first MBMS service set is sent, and the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; a second service identity list is a subset of the first service identity list, each service identity in the second service identity list indicates an MBMS service, and the second service identity list is indicated by a second signaling; any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

As an embodiment, the second communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting at least one signaling in the first signaling group; receiving at least one MBMS service in a first MBMS service set; wherein the first signaling group comprises at least one signaling; the first MBMS service set is sent, and the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; a second service identity list is a subset of the first service identity list, each service identity in the second service identity list indicates an MBMS service, and the second service identity list is indicated by a second signaling; any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

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.

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

As an embodiment, the first node in this application includes the first communication device 450, and the second node in this application includes the second communication device 410.

As an embodiment, the first node in this application includes the first communication device 450, and the third node in this application includes the second communication device 410.

As an embodiment, the second node in this application includes the first communication device 450, and the third node in this application includes the second communication device 410.

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

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

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

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

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 is used for receiving the first signaling group in this application.

As an example, at least one of { the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller/processor 459, the memory 460, the data source 467} is used for receiving the first set of MBMS services in this application.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the second signaling.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used in this application to transmit the first signaling group.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the first MBMS service set in the present application.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the second signaling in the present application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps. In fig. 5, the step in the dashed box F1 is optional.

For theFirst node U1Receiving a first signaling group in step S5101, wherein the first signaling group comprises at least one signaling; receiving a third signaling in step S5102; transmitting second signaling in step S5103; receiving a first MBMS service set in step S5104, where the first MBMS service set includes at least one MBMS service; transmitting a first MBMS service set in step S5105;

for theSecond node U2In step S5201, a third signaling is transmitted; receiving a second signaling in step S5202; transmitting a first MBMS service set in step S5203;

for theThird node U3Transmitting at least one signaling in the first signaling group in step S5301; receiving at least one service in the first MBMS service set in step S5302;

the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; for any service identity in the second service identity list, the second signaling is used for indicating the number of the intended nodes; the third signaling is used to trigger the second signaling.

As an embodiment, the first node and the second node are connected through a Uu interface.

As an embodiment, the first node and the second node are connected through a PC5 interface.

As an embodiment, the first node and the third node are connected through a Uu interface.

As an embodiment, the first node and the third node are connected through a PC5 interface.

As an embodiment, the first signaling group includes Q1 signaling, the Q1 signaling being transmitted by Q1 communication nodes, respectively, the Q1 being a positive integer greater than 1; the Q1 signaling respectively indicates Q1 sub-lists of service identities, any one of the Q1 sub-lists of service identities includes at least one service identity, and any one of the Q1 sub-lists of service identities belongs to the first sub-list of service identities; the number of the intended nodes includes the number of the Q1 service identity sublists including the service identity sublist of any one of the service identities in the second service identity list.

As a sub-embodiment of the above embodiment, the Q1 correspondent nodes are the intended nodes.

As a sub-embodiment of the above embodiment, the phrase the Q1 signaling is sent by Q1 communication nodes, respectively, including: the Q1 signalings are identified by Q1 node identities, respectively.

As an adjunct embodiment of the sub-embodiment, any one of the Q1 node identities comprises a link layer identity.

As an adjunct embodiment of the sub-embodiment, any of the Q1 node identities includes a number of bits that is a positive integer multiple of 8.

As an additional embodiment of the sub-embodiment, the node identity comprises 24 bits.

As an adjunct embodiment of the sub-embodiments, the Q1 signaling respectively identified by Q1 node identities includes: the Q1 signaling is indicated by Q1 SCIs, respectively, the Q1 SCIs including part or all of the Q1 node identities, respectively.

As an adjunct embodiment of the sub-embodiments, the Q1 signaling respectively identified by Q1 node identities includes: the Q1 node identities are respectively used for CRC scrambling of the Q1 signaling.

As an adjunct embodiment of the sub-embodiments, the Q1 signaling respectively identified by Q1 node identities includes: the Q1 node identities are respectively used for determining the time-frequency resource positions occupied by the Q1 signaling.

As an adjunct embodiment of the sub-embodiments, the Q1 signaling respectively identified by Q1 node identities includes: the Q1 node identities are used to generate DMRSs (DeModulation Reference signals) for the Q1 signaling, respectively.

As an adjunct embodiment of the sub-embodiments, the Q1 signaling respectively identified by Q1 node identities includes: the Q1 node identities are used to determine whether the Q1 signaling was received correctly, respectively.

As a sub-embodiment of the foregoing embodiment, for any service identity in the second service identity list, the second signaling indicates the node identity of the sending node in the Q1 service identity sub-lists including the service identity sub-list of any service identity.

As an additional embodiment of the sub-embodiment, the number of intended nodes is equal to the number of node identities of the sending node of the Q1 service identity sub-lists of the second signaling indication, including the service identity sub-list of any one service identity.

As an additional embodiment of the sub-embodiment, the node identity comprises a number of bits that is a positive integer multiple of 8.

As an adjunct embodiment to the sub-embodiment, the node identity comprises a link layer identity.

As an embodiment, the third signaling comprises an RRC signaling.

As an embodiment, the third signaling comprises an MBMSCountingRequest message.

As an embodiment, the third signaling includes a first reference service identity list, where the first reference service identity list includes at least one service identity, each service identity in the first reference service identity list indicates an MBMS service, and the second service identity list is a subset of the first reference service identity list.

As an embodiment, the second signaling comprises an mbmscountresponse message.

As an embodiment, the second signaling is sent periodically.

As an embodiment, the second signaling is sent after the first timer expires.

As a sub-embodiment of the above embodiment, the first timer is indicated by a third signaling.

As a sub-embodiment of the above embodiment, the first timer is configured by the first node.

As a sub-embodiment of the above embodiment, the first timer is configured by the second node.

As a sub-embodiment of the above embodiment, the first timer is configured by the third node.

As an embodiment, the first MBMS service set is transmitted between the first node and the second node in at least one of unicast, SC-PTM, MBSFN (Multimedia Broadcast multicast service Single Frequency Network).

As an embodiment, the first node sends a fourth signaling, where the fourth signaling indicates that the MBMS service indicated by at least one service identity in the second service identity list is stopped being sent.

As an embodiment, the first node sends a fourth signaling, where the fourth signaling indicates that the MBMS service indicated by at least one service identity in the first service identity list is stopped being sent.

As an embodiment, the first node sends a fourth signaling, where the fourth signaling indicates that the MBMS service indicated by at least one service identity in the second service identity list is stopped from being received.

As a sub-embodiment of the above embodiment, the fourth signaling includes one MAC CE.

As a sub-embodiment of the above embodiment, the fourth signaling comprises an RRC signaling.

As a sub-embodiment of the above embodiment, the fourth signaling comprises a PC5 signaling.

As a sub-embodiment of the above embodiment, the fourth signaling comprises a higher layer signaling.

As a sub-embodiment of the above embodiment, the receiving node of the fourth signaling is the second node.

As a sub-embodiment of the above-mentioned embodiment, the receiving node of the fourth signaling is a third node.

As an embodiment, the receiving of the first signaling group in step S5101 is before the receiving of the first MBMS service set in step S5104.

As an embodiment, the step S5101 receiving the first signaling group is after the step S5104 receiving the first set of MBMS services.

As an embodiment, the step S5102 receiving the third signaling is before the step S5104 receiving the first MBMS service set.

As an embodiment, the step S5102 receiving the third signaling is after the step S5104 receives the first MBMS service set.

As an embodiment, the step S5103 sends the second signaling before the step S5104 receives the first MBMS service set.

As an embodiment, the step S5103 sends the second signaling after the step S5104 receives the first MBMS service set.

As an embodiment, the step S5101 receiving the first signaling group is before the step S5105 sending the first set of MBMS services.

As an embodiment, the step S5101 receiving the first signaling group is after the step S5105 sending the first set of MBMS services.

As an embodiment, the step S5102 receiving the third signaling is before the step S5105 sending the first set of MBMS services.

As an embodiment, the step S5102 receives the third signaling after the step S5105 sends the first set of MBMS services.

As an embodiment, the step S5103 sends the second signaling before the step S5105 sends the first set of MBMS services.

As an embodiment, the step S5103 sends the second signaling after the step S5105 sends the first set of MBMS services.

Example 6

Embodiment 6 illustrates a wireless signal transmission flow diagram according to yet another embodiment of the present application, as shown in fig. 6. In fig. 6, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps. In fig. 6, the step in the dashed box F1 is optional.

For theFirst node U1Receiving a first signaling group in step S6101, the first signaling group comprising at least one signaling; receiving a third signaling in step S6102; determining whether first indication information is preconfigured or whether the third signaling includes the first indication information at step S6103; if not, a second signaling is sent in step S6104; if yes, jump to step S6105 to send the fifth signaling.

For theSecond node U2In step S6201, a third signaling is sent; receiving a second signaling in step S6202; the fifth signaling is received in step S6203.

For theThird node U3At least one signaling in the first signaling group is transmitted in step S6301.

The first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; for any service identity in the second service identity list, the second signaling is used for indicating the number of the intended nodes; the third signaling is used to trigger the second signaling; the fifth signaling indicates a first service identity list.

As an embodiment, the third signaling comprises an RRC signaling.

As an embodiment, the third signaling comprises an MBMSCountingRequest message.

As an embodiment, the phrase the third signaling indicates first indication information, including: the third signaling carries the first indication information.

As an embodiment, the phrase the third signaling indicates that the first indication information includes: the first indication information in the third signaling is set.

As a sub-embodiment of the above embodiment, the phrase that the first indication information is set includes: the first indication information is set to 1.

As a sub-embodiment of the above embodiment, the phrase that the first indication information is set includes: the first indication information is set to TRUE.

As an embodiment, the first indication information is preconfigured by first reference signaling.

As a sub-embodiment of the above embodiment, the first reference signaling comprises an RRC signaling.

As a sub-embodiment of the above-mentioned embodiment, the first reference signaling includes a rrcreeconfigurationsidelink message.

As a sub-embodiment of the above-mentioned embodiment, the first reference signaling comprises an rrcconnectionreconfiguration sidelink message.

As a sub-embodiment of the above-mentioned embodiment, the first reference signaling includes a rrcreeconfiguration message.

As a sub-embodiment of the above-mentioned embodiments, the first reference signaling comprises an rrcconnectionreconfiguration message.

As an embodiment, the advantage of sending the second signaling is that the signaling overhead can be reduced, and the energy consumption can be reduced.

As an embodiment, the fifth signaling is an RRC signaling.

As an embodiment, the fifth signaling is a higher layer signaling.

As an embodiment, the fifth signaling is sent at the PC5 interface.

As an embodiment, the fifth signaling is sent on a Uu interface.

As an embodiment, the fifth signaling indicates the first signaling group.

As an embodiment, the fifth signaling indicates the first service identity list.

As a sub-embodiment of the above embodiment, the fifth signaling indicates the Q1 service identity sub-lists.

As a sub-embodiment of the above-mentioned embodiment, the fifth signaling includes the Q1 signaling.

As an embodiment, the benefit of sending the fifth signaling is that the processing complexity of the first node U1 may be reduced.

As an embodiment, the first node U1 receives the first set of MBMS services.

As an embodiment, the first node U1 transmits the first set of MBMS services.

As an embodiment, the second node U2 sends the first set of MBMS services.

As an embodiment, the first node U1 receives the first set of MBMS services before the step S6101 receives the first signaling group.

As an embodiment, the first node U1 receives the first set of MBMS services after receiving the first signaling group in step S6101.

As an embodiment, the first node U1 receives the first set of MBMS services before the step S6102 receives the third signaling.

As an embodiment, the first node U1 receives the first set of MBMS services after receiving the third signaling in step S6102.

As an embodiment, the first node U1 receives the first set of MBMS services before the step S6104 sends the second signaling.

As an embodiment, the first node U1 receives the first set of MBMS services after the step S6104 sends the second signaling.

As an embodiment, the first node U1 receives the first set of MBMS services before the step S6105 sends the fifth signaling.

As an embodiment, the first node U1 receives the first set of MBMS services after the step S6105 sends the fifth signaling.

Example 7

Embodiment 7 illustrates a wireless signal transmission flow diagram according to yet another embodiment of the present application, as shown in fig. 7. In fig. 7, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps.

For theFirst node U1Receiving a sixth signaling in step S7101; in step S7102, sending a seventh signaling; a first signaling group is received in step S7103, the first signaling group comprising at least one signaling.

For theSecond node U2In step S7201, sixth signaling is transmitted.

For theThird node U3Receiving a seventh signaling in step S7301; at least one signaling in the first signaling group is sent in step S7302.

The sixth signaling indicates a third service identity list, the third service identity list includes at least one service identity, and each service identity in the third service identity list indicates an MBMS service; the seventh signaling indicates a fourth service identity list, the fourth service identity list includes at least one service identity, and each service identity in the fourth service identity list indicates an MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the fourth service identity list is a subset of the third service identity list; at least one service identity in the fourth service identity list belongs to the first service identity list.

As an embodiment, the sixth signaling comprises an RRC signaling.

As an embodiment, the sixth signaling comprises a PC5 signaling.

As an embodiment, the sixth signaling comprises a higher layer signaling.

As an embodiment, the sixth signaling is used to trigger the seventh signaling.

As an embodiment, the sixth signaling is transmitted on a SC-MCCH (Single Cell Multicast Control Channel).

As an embodiment, the sixth signaling is transmitted on an MCCH (Multicast Control Channel).

As an embodiment, the sixth signaling is transmitted on a PBCH (Physical Broadcast CHannel).

As an embodiment, for any service identity in the third service identity list, the sixth signaling is used to indicate scheduling information.

As an embodiment, the sixth signaling indicates scheduling information of an MBMS service.

As an embodiment, the sixth signaling indicates scheduling information of an SC-MTCH (Single Cell Multicast Traffic Channel).

As an embodiment, the sixth signaling indicates scheduling information of MTCH (Multicast Traffic Channel).

As an embodiment, the seventh signaling comprises a PC5 signaling.

As an embodiment, the seventh signaling includes a Relay Discovery Additional Information message.

As an embodiment, the seventh signaling comprises an RRC signaling.

As an embodiment, the seventh signaling comprises a higher layer signaling.

As an embodiment, the seventh signaling is used to trigger at least one signaling in the first signaling group.

As an embodiment, the phrase said seventh signaling used to trigger at least one signaling in the first signaling group comprises: at least one signaling in the first signaling group is sent in response to receiving the seventh signaling.

As an embodiment, the phrase said seventh signaling used to trigger at least one signaling in the first signaling group comprises: the seven signaling indicates a second timer, and at least one signaling in the first signaling group is sent after the second timer expires.

As an embodiment, the phrase the fourth list of service identities is a subset of the third list of service identities, including: each service identity in the fourth service identity list belongs to the third service identity list.

As an embodiment, the MBMS service indicated by any service identity list in the fourth identity service list is being sent by the second node U2.

As an embodiment, the MBMS service indicated by any service identity in the fourth service identity list is being transmitted or is about to be transmitted.

As an embodiment, the MBMS service indicated by any service identity in the third service identity list is being transmitted or is about to be transmitted.

As an embodiment, the MBMS service indicated by any service identity in the third service identity list is being sent by the first node U1.

Example 8

Embodiment 8 is a block diagram illustrating a processing apparatus used in a first node, as shown in fig. 8. In embodiment 8, a first node processing apparatus 800 includes a first transmitter 801 and a first receiver 802.

The first receiver 802, receiving a first signaling group, the first signaling group comprising at least one signaling; the first transmitter 801, configured to transmit a second signaling; sending a first MBMS service set, wherein the first MBMS service set comprises at least one MBMS service;

in embodiment 8, the first signaling group indicates a first service identity list, where the first service identity list includes at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the second signaling indicates a second service identity list, the second service identity list comprises at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of the first service identity list, and any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

For one embodiment, the first signaling group is transmitted on a sidelink.

As an embodiment, the first set of MBMS services is transmitted on a sidelink.

As an embodiment, the second signaling is sent on an uplink.

For one embodiment, the first node processing apparatus 800 is a user equipment.

For one embodiment, the first node processing apparatus 800 is an NR node B.

In one embodiment, the first node processing apparatus 800 is a relay node.

The first transmitter 801 includes, for one embodiment, at least one of an antenna 452, a transmitter/receiver 454, a multi-antenna transmitter processor 457, a transmit processor 468, a controller/processor 459, a memory 460, and a data source 467 of fig. 4.

The first transmitter 801 includes, for one embodiment, the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

For one embodiment, the first receiver 802 includes at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

For one embodiment, the first receiver 802 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

Example 9

Embodiment 9 is a block diagram illustrating a processing apparatus used in a second node, as shown in fig. 9. In fig. 9, the second node processing means 900 comprises a second receiver 901 and a second transmitter 902.

The second receiver 901, receiving a second signaling;

in embodiment 9, the second signaling indicates a second service identity list, where the second service identity list includes at least one service identity, and each service identity in the second service identity list indicates an MBMS service; the second service identity list is a subset of a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; the first service identity list is indicated by a first signaling group, and the first signaling group comprises at least one signaling; the first set of MBMS services includes at least one MBMS service. Any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list, and the first MBMS service set is sent.

For an embodiment, the second transmitter 902 transmits the first MBMS service set.

As an embodiment, the second signaling is sent on an uplink.

As an embodiment, the first set of MBMS services is transmitted on a downlink.

For one embodiment, the second node processing apparatus 900 is a user equipment.

For one embodiment, the second node processing apparatus 900 is an NR node B.

As an embodiment, the second node processing apparatus 900 is a relay node.

The second transmitter 902 includes, for one embodiment, at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

The second transmitter 902 includes, for one embodiment, the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

For one embodiment, the second receiver 901 includes at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

For one embodiment, the second receiver 901 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

Example 10

Embodiment 10 illustrates a block diagram of a processing apparatus for use in a third node according to one embodiment of the present application; as shown in fig. 10. In fig. 10, the processing means 1000 in the third node comprises a third receiver 1001 and a third transmitter 1002.

The third transmitter 1002, configured to send at least one signaling in the first signaling group;

the third receiver 1001 receives at least one MBMS service in the first MBMS service set;

in embodiment 10, the first set of signaling comprises at least one signaling; the first MBMS service set is sent, and the first MBMS service set comprises at least one MBMS service; the first signaling group indicates a first service identity list, the first service identity list comprises at least one service identity, and each service identity in the first service identity list indicates an MBMS service; a second service identity list is a subset of the first service identity list, each service identity in the second service identity list indicates an MBMS service, and the second service identity list is indicated by a second signaling; any MBMS service in the first MBMS service set is indicated by one service identity in the second service identity list; the second signaling is used to indicate the number of intended nodes for any of the service identities in the second list of service identities.

As an embodiment, at least one signaling in the first signaling group is sent on a sidelink.

As an embodiment, at least one MBMS service in the first set of MBMS services is transmitted on a sidelink.

For one embodiment, the first signaling group is transmitted on a sidelink.

As an embodiment, the first set of MBMS services is transmitted on a sidelink.

For one embodiment, the third node processing apparatus 1000 is a relay node.

For one embodiment, the third node processing apparatus 1000 is a user equipment.

For one embodiment, the third node processing apparatus 1000 is an NR node B.

For one embodiment, the third transmitter 1002 includes the antenna 420, the transmitter 418, the transmit processor 416, and the controller/processor 475.

For one embodiment, the third transmitter 1002 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475.

For one embodiment, the third receiver 1001 includes the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475.

For one embodiment, the third receiver 1001 includes the controller/processor 475.

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, aircraft, unmanned aerial vehicle, telecontrolled aircraft. The second 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, aircraft, unmanned aerial vehicle, remote control plane. The third 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, aircraft, unmanned aerial vehicle, telecontrolled aircraft. User equipment or UE or terminal in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control aircraft. The base station device, the base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro 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 air 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 wireless communication, comprising:

2. The first node of claim 1, wherein the first signaling group comprises Q1 signaling, the Q1 signaling being sent by Q1 communication nodes, respectively, the Q1 being a positive integer greater than 1; the Q1 signaling respectively indicates Q1 sub-lists of service identities, any one of the Q1 sub-lists of service identities includes at least one service identity, and any one of the Q1 sub-lists of service identities belongs to the first sub-list of service identities; the number of the intended nodes includes the number of the Q1 service identity sublists including the service identity sublist of any one of the service identities in the second service identity list.

3. The first node according to claim 1 or 2, comprising:

the first receiver receives the first MBMS service set.

4. The first node according to any of claims 1 to 3, comprising:

the first receiver receives a third signaling;

wherein the third signaling is used to trigger the second signaling.

5. The first node according to any of claims 1 to 4, comprising:

6. The first node according to any of claims 1 to 5, comprising:

any of the signaling in the first signaling group includes one PC5 signaling.

7. The first node according to any of claims 1 to 6, comprising:

the second signaling comprises an RRC signaling.

8. The first node according to any of claims 1 to 7, comprising:

any service identity in the first service identity list refers to TMGI (Temporary Mobile Group identity).

9. A second node for wireless communication, comprising:

a second receiver receiving a second signaling;

10. A third node for wireless communication, comprising: