CN117979255A

CN117979255A - Method and device for wireless communication of sidelink

Info

Publication number: CN117979255A
Application number: CN202311528376.5A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2024-05-03
Also published as: CN114158008A

Abstract

The application discloses a method and a device for wireless communication of a secondary link. The first node receives first signaling through an air interface; transmitting a first wireless signal in response to receiving the first signaling, the first wireless signal including second signaling; receiving a second set of data units over the air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units. The application can effectively reduce data retransmission.

Description

Method and device for wireless communication of sidelink

The application is a divisional application of the following original application:

Filing date of the original application: 2020, 09, 04 days

Number of the original application: 202010922967.0

-The name of the invention of the original application: method and device for wireless communication of sidelink

Technical Field

The present application relates to a method and apparatus in a wireless communication system, and more particularly, to a method and apparatus for supporting relay transmission in sidelink wireless communication.

Background

Relay (Relay) is used as a multi-hop transmission technology, which can improve throughput and coverage. Relay communication is a common method in cellular network communication, where data from a source node is forwarded by a relay node to a remote node. The source node and the remote node are typically base station equipment and user equipment, or may be both user equipment; the relay node may be a network device or a user equipment. Taking a sidelink (Sidelink) SL transmission in an LTE (Long Term Evolution ) system as an example, transmission from a User Equipment (UE) to a Relay Node (RN) adopts a sidelink air interface technology, and transmission from the RN to a base station (eNodeB, eNB) adopts an LTE air interface technology. The RN is used for data forwarding between the UE and the eNB, and is called IP (Internet Protocol ) Layer forwarding or Layer 3 Relay (Layer 3 Relay/L3 Relay).

Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. To meet different performance requirements of various application scenarios, a study on NR (New Radio, new air interface) technology (or Fifth Generation, 5G) is decided on the 3GPP (3 rd Generation Partner Project, third Generation partnership project) RAN (Radio Access Network ) #72 full-time, and a standardization Work for NR is started on the 3GPP RAN #75 full-time with WI (Work Item) of NR. For V2X (Vehicle-to-evolution) services, which are rapidly evolving, 3GPP has also started the standard formulation and research work for SL (Sidelink ) under the NR framework, deciding to start SI (Study Item) standardization work for NR SL RELAY at the 3GPP ran#86 full-scale.

Disclosure of Invention

The inventor discovers through research that the transmission quality of a source node and a remote node can be improved by introducing a relay node in SL transmission, and the wireless coverage is enhanced. If the wireless links of the source node and the relay node fail, the data retransmission of the source node can be reduced by utilizing the wireless links of the relay node and the remote node to continue transmission before switching to a new relay node, so that the transmission efficiency is remarkably improved.

In view of the above, the present application discloses a solution. In the description of the present application, only an NR V2X scene is taken as a typical application scene or example; the application is also applicable to other scenes (such as relay network, D2D (Device-to-Device) network, cellular network, scene supporting half duplex user equipment) besides NR V2X which faces similar problems, and can obtain technical effects similar to those in NR V2X scene. Furthermore, the adoption of unified solutions for different scenarios (including but not limited to NR V2X scenarios, downstream communication scenarios, etc.) also helps to reduce hardware complexity and cost. Embodiments in the first node of the application and features in the embodiments may be applied to any other node and vice versa without conflict. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict. In particular, the term (Terminology), noun, function, variable in the present application may be interpreted (if not specifically described) with reference to the definitions in the 3GPP specification protocols TS36 series, TS38 series, TS37 series.

The application discloses a method used in a first node of wireless communication, which is characterized by comprising the following steps:

receiving first signaling over an air interface;

Transmitting a first wireless signal in response to receiving the first signaling, the first wireless signal including second signaling;

receiving a second set of data units over the air interface;

Wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As an embodiment, the application is applicable to a scenario in which a relay node is supported in sidelink wireless transmission.

As an embodiment, the problem to be solved by the present application is: retransmission after failure of wireless links of the transmitting node and the relay node.

As an embodiment, the solution of the present application comprises: when wireless links of the transmitting node and the relay node fail, the relay node transmits the end mark after transmitting the cached data to trigger the receiving node to feed back a receiving state report; the receiving node does not reconfigure or reestablish the radio bearer.

As one embodiment, the beneficial effects of the present application include: and data retransmission is reduced.

According to one aspect of the application, it comprises:

In response to receiving the first signaling, clearing the first identity from the first identity list; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling;

Wherein the first identity identifies a sender of the first signaling; the number of bits comprised by the partial bits is a positive integer multiple of 8. According to one aspect of the application, it comprises:

transmitting the first information over an air interface;

Wherein the first information indicates a first wireless link failure; the recipient of the first information includes a node identified by the first identity.

According to one aspect of the application, it comprises:

receiving a third set of data units over the air interface;

Wherein the third set of data units is used to determine the first set of data units; the first signaling is received at a time not earlier than a time of receipt of any one of the third set of data units.

According to one aspect of the application, it comprises:

receiving second information over the air interface;

Wherein the second information comprises the first identity list and a first configuration; q identities are included in the first identity list, and Q is a positive integer; the first configuration includes a first set of parameters, the first set of parameters being used to configure a first radio bearer; the first set of parameters is applicable to the first set of data units and the second set of data units.

According to one aspect of the application, it comprises:

Receiving third information over the air interface;

Wherein the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the receiver of the first wireless signal.

The application discloses a method used in a second node of wireless communication, which is characterized by comprising the following steps:

Transmitting a first signaling over an air interface;

Wherein a first wireless signal is received, the first wireless signal comprising second signaling, the second signaling being used to generate a second wireless signal; the second wireless signal is transmitted; a second set of data units is received over the air interface; the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the second node is non-co-located with a receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

According to one aspect of the application, it comprises:

The first identity is purged from the first identity list; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding;

wherein the first identity identifies a sender of the first signaling; the number of bits comprised by the partial bits is a positive integer multiple of 8.

According to one aspect of the application, it comprises:

receiving first information over an air interface;

wherein the first information indicates a first wireless link failure.

According to one aspect of the application, it comprises:

Receiving a third set of wireless signals;

transmitting a fourth set of wireless signals;

Wherein a fourth set of data units is recovered from the third set of wireless signals, the fourth set of data units being used to generate the fourth set of wireless signals; the fourth set of data units comprises a third set of data units; the third set of data units is used to determine the first set of data units; the transmission time of the first signaling is not earlier than the transmission time of any one of the fourth set of wireless signals.

According to one aspect of the application, it comprises:

Receiving a fifth wireless signal;

transmitting a sixth wireless signal;

Wherein second information is recovered from the fifth wireless signal, the second information being used to generate the sixth wireless signal; the second information includes the first identity list and a first configuration; q identities are included in the first identity list, and Q is a positive integer; the first configuration includes a first set of parameters, the first set of parameters being used to configure a first radio bearer; the first set of parameters is applicable to the first set of data units and the second set of data units.

According to one aspect of the application, it comprises:

Third information is received; the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the receiver of the first wireless signal.

The application discloses a method used in a third node of wireless communication, which is characterized by comprising the following steps:

Receiving a second wireless signal, the second wireless signal comprising second signaling;

transmitting the second set of data units over the air interface;

Wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the first signaling is sent; the sender of the first signaling is non-co-located with the sender of the second wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

According to one aspect of the application, it comprises:

The first information is transmitted; wherein the first information indicates a first wireless link failure; the recipient of the first information includes a node identified by the first identity.

According to one aspect of the application, it comprises:

Transmitting a fifth set of data units over the air interface; the fifth set of data units comprises a third set of data units;

According to one aspect of the application, it comprises:

transmitting the second information over the air interface;

According to one aspect of the application, it comprises:

Transmitting third information over the air interface;

wherein the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the sender of the second wireless signal.

The application discloses a first node used for wireless communication, which is characterized by comprising the following components:

A first receiver that receives first signaling over an air interface;

A first transmitter that transmits a first wireless signal as a response to receiving the first signaling, the first wireless signal including a second signaling;

The first receiver receiving a second set of data units over an air interface;

The present application discloses a second node used for wireless communication, which is characterized by comprising:

a second transmitter for transmitting the first signaling over the air interface;

The present application discloses a third node used for wireless communication, which is characterized by comprising:

a third receiver that receives a second wireless signal, the second wireless signal including second signaling;

A third transmitter for transmitting the second set of data units over the air interface;

Drawings

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

Fig. 1 illustrates a transmission flow diagram of a first node according to one embodiment of the application;

FIG. 2 illustrates a schematic diagram of a network architecture according to one embodiment of the application;

Fig. 3 illustrates a schematic diagram of a radio protocol architecture of a user plane and a control plane in accordance with one embodiment of the present application;

FIG. 4 illustrates a hardware block diagram of a communication device according to one embodiment of the application;

Fig. 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the application;

fig. 6 illustrates a format diagram of one MAC PDU according to one embodiment of the present application;

fig. 7 illustrates a second signaling format diagram according to an embodiment of the application;

Fig. 8 illustrates a schematic diagram of another second signaling format according to an embodiment of the present application;

fig. 9 illustrates a schematic diagram of a first signaling format according to an embodiment of the present application;

Fig. 10 illustrates a schematic diagram of another first signaling format according to an embodiment of the present application;

fig. 11 illustrates a schematic diagram of a wireless protocol architecture for relay transmission according to one embodiment of the application;

FIG. 12 illustrates a block diagram of a processing arrangement in a first node according to one embodiment of the application;

FIG. 13 illustrates a block diagram of a processing arrangement in a second node according to one embodiment of the application;

Fig. 14 illustrates a block diagram of the processing means in the third node according to an embodiment of the application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a transmission flow diagram of a first node according to an embodiment of the application, as shown in fig. 1.

In embodiment 1, a first node 100 receives first signaling over an air interface in step 101; transmitting a first wireless signal in step 102 in response to receiving the first signaling, the first wireless signal including second signaling; receiving a second set of data units over an air interface in step 103; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As an embodiment, the air interface comprises an interface for wireless signal transmission.

As an embodiment, the air interface comprises an interface for wireless signaling.

The air interface, as one embodiment, comprises a PC5 interface.

As an embodiment, the air interface comprises a Uu interface.

As an embodiment, transmitting over the air interface comprises: received over the air interface and transmitted over the air interface.

As an embodiment, transmitting over the air interface comprises: transmitted via SL.

As an embodiment, transmitting over the air interface comprises: through DL (DownLink) transmission.

As an embodiment, transmitting over the air interface comprises: transmitted via UL (UpLink).

As an embodiment, transmitting over the air interface comprises: the physical transport channel is PSSCH (PHYSICAL SIDELINK SHARED CHANNEL ).

As an embodiment, transmitting over the air interface comprises: the physical transport channel is PDSCH (Physical Downlink SHARED CHANNEL ).

As an embodiment, transmitting over the air interface comprises: the logical transport channel is an STCH (SIDELINK TRAFFIC CHANNEL ).

As an embodiment, transmitting over the air interface comprises: the logical transport channel is DTCH (DEDICATED TRAFFIC CHANNEL ).

As an embodiment, transmitting over the air interface comprises: the logical transport channel is the SCCH (Sidelink Control Channel ).

As an embodiment, transmitting over the air interface comprises: the logical transport channel is DCCH (DEDICATED CONTROL CHANNEL ).

As an embodiment, transmitting over the air interface comprises: the radio bearer is an SRB (SIGNALING RADIO BEAR, signaling radio bearer).

As an embodiment, transmitting over the air interface comprises: the radio bearer is a DRB (Data Radio Bearer ).

As an embodiment, transmitting over the air interface comprises: the radio bearer is a SL-SRB (sidelink signaling radio bearer).

As an embodiment, the time-frequency resources of the air interface belong to a V2X resource pool.

As one embodiment, time-frequency resources of the air interface are reserved for sidelink transmission.

As an embodiment, time-frequency resources of the air interface are reserved for downlink transmissions.

As an embodiment, time-frequency resources of the air interface are reserved for uplink transmissions.

As an embodiment, the transmission of the first radio signal, the second radio signal, the third radio signal set, the fourth radio signal set, the fifth radio signal, and the sixth radio signal in the present application is transmitted through the air interface, respectively.

As an embodiment, the transmission of the first signaling, the second signaling, the first information, the second information and the third information in the present application is transmitted through the air interface respectively.

As an embodiment, the sender of the first signaling is the second node.

As an embodiment, the first signaling indicates that the second node has no subsequent data packet to send for the first radio bearer.

As an embodiment, the first signaling indicates that the second node is transmitting for the last data packet of the first radio bearer.

As an embodiment, the first signaling comprises END MARKER (end identification) messages.

As an embodiment, the first signaling is generated at an RLC (Radio Link Control, radio link layer control protocol) sublayer.

As an embodiment, the first signaling is generated in a MAC (MEDIA ACCESS Control, medium access Control) sub-layer.

As an embodiment, the higher layer of the second node indicates to generate the first signaling.

As a sub-embodiment of the above embodiment, the higher layer is an adaptation sub-layer.

As a sub-embodiment of the above embodiment, the higher layer is an RLC sub-layer.

In one embodiment, in response to receiving the first signaling, a first wireless signal is transmitted, the first wireless signal including second signaling.

As an embodiment, the RLC entity of the first node receives the first signaling, and the first signaling triggers (trigger) the RLC entity to generate the second signaling.

As an embodiment, the RLC entity of the first node receives the first signaling, which is used to instruct a PDCP (PACKETDATA CONVERGENCE PROTOCOL ) entity of the first node to generate the second signaling.

As an embodiment, the MAC entity of the first node receives the first signaling, which is used to instruct the RLC entity of the first node to generate the second signaling.

As an embodiment, the MAC entity of the first node receives the first signaling, which is used to instruct the PDCP entity of the first node to generate the second signaling.

As an embodiment, the first wireless signal comprises the second signaling; the target recipient of the second signaling is a third node.

As an embodiment, a target recipient of signaling refers to: the one signaling is received over the air interface and is no longer forwarded over the air interface.

As an embodiment, a target recipient of signaling refers to: the one signaling is received over an air interface, the one signaling terminating at the receiver.

As an embodiment, a target recipient of signaling refers to: the one signaling is received over an air interface and data carried in the one signaling is passed to the RLC sublayer.

As an embodiment, a target recipient of signaling refers to: the one signaling is received over an air interface and data carried in the one signaling is delivered to the PDCP sublayer.

As an embodiment, a target recipient of signaling refers to: the one signaling is received over an air interface and data carried in the one signaling is transferred to a NAS (Non-Access Stratum).

As an embodiment, the second signaling is transmitted through the PSSCH.

As an embodiment, the second signaling is transmitted through a DRB.

As one embodiment, the receiver of the first wireless signal is a fourth node.

As one embodiment, the fourth node receives the first wireless signal, recovers the second signaling from the first wireless signal, and the second signaling is used to generate the second wireless signal transmission; the receiver of the second wireless signal is the third node.

As an embodiment, the sender of the first signaling is not the same communication device as the receiver of the first wireless signal.

As one embodiment, the identity of the sender of the first signaling is different from the identity of the receiver of the first wireless signal.

As an embodiment, a part of bits in a MAC PDU (Protocol DataUnit ) comprising the first signaling comprising the identity of the sender of the first signaling; the SCI (Sidelink Control Information ) of the first signaling is scheduled to include the remaining portion bits of the identity of the sender of the first signaling.

As a sub-embodiment of the above embodiment, the partial bits include the upper 16 bits of the identity of the sender of the first signaling; the remaining portion of bits includes the lower 8 bits of the identity of the sender of the first signaling.

As one embodiment, a portion of bits in a MAC PDU including the first wireless signal that includes an identity of a receiver of the first wireless signal; the SCI of the first wireless signal is scheduled to include remaining bits of the identity of the recipient of the first wireless signal.

As a sub-embodiment of the above embodiment, the partial bits include the upper 8 bits of the identity of the receiver of the first wireless signal; the remaining portion of bits includes the lower 16 bits of the identity of the receiver of the first wireless signal.

As one embodiment, the SCI includes a first-stage SCI format and a second-stage SCI format.

As an embodiment, the SCI indicates at least one of time domain resources or frequency domain resources of a physical layer channel occupied by a MAC PDU including the first signaling.

As an embodiment, the SCI includes at least one of MCS (Modulation andCoding Status, modulation coding status), RV (Redundancy Version ), NDI (New Data Indicator, new data indication) or HARQ Process number (Process number).

As an embodiment, the phrase the second signaling indicating that the first set of data units has not been received comprises: the first set of data units is lost.

As an embodiment, the second signaling is used to indicate retransmission of the first set of data units.

As an embodiment, the first set of data units comprises at least one data unit.

As an embodiment, the second signaling is used by the third node to determine the second set of data units; the second set of data units includes the first set of data units.

As an embodiment, the first set of data units and the second set of data units each include RLC SDUs(s) (SERVICE DATA units, traffic data units).

As an embodiment, the first set of data units and the second set of data units each comprise PDCP SDUs(s).

As an embodiment, the first set of data units and the second set of data units each comprise RLC SDU segments(s) (segmentation).

As an embodiment, the first set of data units and the second set of data units each comprise RLC PDUs(s).

As an embodiment, the first set of data units and the second set of data units each comprise PDCP PDUs(s).

As an embodiment, the second set of data units is transmitted over a PSSCH.

As an embodiment, the second set of data units is transmitted via a DRB.

As an embodiment, the second set of data units comprises at least one data unit.

As an embodiment, the second set of data units is generated at the third node, is received at the fourth node after transmission over an air interface, forwards the second set of data units, and is received at the first node over the air interface.

As an embodiment, both the first set of data units and the second set of data units are transmitted over a first radio bearer.

As an embodiment, the first radio bearer is used for transmitting traffic to which the first set of data units and the second set of data units belong.

As an embodiment, the first radio bearer is used for transmitting PC5 QoS (Quality of Service ) flows to which the first set of data units and the second set of data units belong.

As an embodiment, the first radio bearer is a DRB.

As an embodiment, the first radio bearer is a SL-SRB.

As an embodiment, the first radio bearer is an RLC bearer.

As an embodiment, the first node and the third node maintain one PDCP entity of the first radio bearer, respectively.

As an embodiment, the first node and the third node each maintain one RLC entity of the first radio bearer.

As an embodiment, the first radio bearer is an AM (Acknowledged Mode ) DRB.

As an embodiment, the RLC entity of the first radio bearer is an AM RLC entity.

As an embodiment, the LCID (Logical CHANNEL IDENTIFIER ) corresponding to any data unit in the first data unit set is the same as the LCID corresponding to any data unit in the second data unit set.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to one embodiment of the application, as shown in fig. 2. Fig. 2 illustrates V2X communication architecture under NR 5g, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system architecture. The NR 5G or LTE-a network architecture may be referred to as 5GS (5G System)/EPS (Evolved PACKET SYSTEM) or some other suitable terminology.

The V2X communication architecture of embodiment 2 includes UE (User Equipment) 201, UE241, ng-RAN (next generation radio access network) 202,5GC (5G Core Network)/EPC (Evolved Packet Core, evolved packet core) 210, hss (Home Subscriber Server )/UDM (Unified DATA MANAGEMENT) 220, proSe function 250, and ProSe application server 230. The V2X communication architecture may be interconnected with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the V2X communication architecture provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this disclosure may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 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), TRP (transmit receive node), or some other suitable terminology, and in an NTN network, the gNB203 may be a satellite, an aircraft, or a terrestrial base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband internet of things device, a machine-type communications device, a land vehicle, an automobile, an in-vehicle device, an in-vehicle communications unit, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the 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. gNB203 is connected to 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility MANAGEMENT ENTITY )/AMF (Authentication MANAGEMENT FIELD, authentication management domain)/SMF (Session Management Function ) 211, other MME/AMF/SMF214, S-GW (SERVICE GATEWAY, serving Gateway)/UPF (User Plane Function), 212, and P-GW (PACKET DATE Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. 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/UPF213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to internet services. Internet services include operator-corresponding internet protocol services, which may include, in particular, internet, intranet, IMS (IP Multimedia Subsystem ) and PS (PACKET SWITCHING, packet-switched) streaming services. The ProSe function 250 is a logic function for network related behavior required for proximity services (ProSe, proximity-based Service); including DPF (Direct Provisioning Function, direct provision Function), direct Discovery name management Function (Direct Discovery NAME MANAGEMENT Function), EPC level Discovery ProSe Function (EPC-level Discovery ProSe Function), and the like. The ProSe application server 230 has the functions of storing EPC ProSe user identities, mapping between application layer user identities and EPC ProSe user identities, allocating ProSe-restricted code suffix pools, etc.

As an embodiment, the NR node B, the UE201 and the UE241 correspond to a first node, a second node, and a third node in the present application, respectively.

As an embodiment, the UE201 corresponds to the first node in the present application, and the UE241 corresponds to the second node in the present application.

As an embodiment, the UE201 corresponds to the second node in the present application, and the UE241 corresponds to the third node in the present application.

As an embodiment, the UE201 and the UE241 support transmission in SL, respectively.

As an embodiment, the UE201 and the UE241 support PC5 interfaces, respectively.

As an embodiment, the UE201 and the UE241 support the internet of vehicles, respectively.

As an embodiment, the UE201 and the UE241 support V2X services, respectively.

As an embodiment, the UE201 and the UE241 support D2D services, respectively.

As an embodiment, the UE201 and the UE241 support public security services, respectively.

As an embodiment, the UE201 supports relay transmission.

As an embodiment, the UE241 supports relay transmission.

As an embodiment, the gNB203 supports internet of vehicles.

As an embodiment, the gNB203 supports V2X traffic.

As an embodiment, the gNB203 supports D2D traffic.

As an embodiment, the gNB203 supports public security services.

As one example, the gNB203 is a macro Cell (Marco Cell) base station.

As one example, the gNB203 is a Micro Cell (Micro Cell) base station.

As an example, the gNB203 is a Pico Cell (Pico Cell) base station.

As an example, 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 embodiment, the gNB203 is a flying platform device.

As one embodiment, the gNB203 is a satellite device.

As an embodiment, the radio link from the UE201 to the gNB203 is an uplink.

As an embodiment, the radio link from the gNB203 to the UE201 is a downlink.

As an embodiment, the radio link between the UE201 and the UE241 corresponds to a sidelink in the present application.

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

As an embodiment, the UE201 and the UE241 are connected through a PC5 reference point (REFERENCE POINT).

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

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

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

Example 3

Embodiment 3 illustrates a schematic diagram of a radio protocol architecture of a user plane and a control plane according to one embodiment of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture of the control plane 300 for a UE and a gNB with 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 PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY301. The L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (PACKET DATA Convergence Protocol ) sublayer 304, which terminate at the gNB on the network side. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of data packets, retransmission of lost data packets by ARQ, and RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channel identities. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request ) operations. The RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer) 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 gNB and the UE. Although not shown, a V2X layer may be further disposed above the RRC sublayer 306 in the control plane 300 of the UE, where the V2X layer is responsible for generating a PC5QoS parameter set and QoS rules according to received service data or service requests, generating a PC5QoS flow corresponding to the PC5QoS parameter set, and sending a PC5QoS flow identifier and a corresponding PC5QoS parameter set to an AS (Access Stratum) layer for QoS processing by the AS layer on a data packet belonging to the PC5QoS flow identifier; the V2X layer also includes a PC5-S signaling protocol (PC 5-SIGNALING PROTOCOL) sublayer, and the V2X layer is responsible for indicating whether each transmission by the AS layer is a PC5-S transmission or a V2X traffic data transmission. 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 is substantially the same for the physical layer 351, PDCP sublayer 354 in the L2 layer 355, RLC sublayer 353 in the L2 layer 355, and 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 data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is an SDAP (SERVICE DATA Adaptation Protocol ) sublayer 356, the SDAP sublayer 356 being responsible for mapping between QoS (Quality of Service ) flows and data radio bearers (DRBs, data Radio Bearer) to support diversity of traffic. The radio protocol architecture of the UE in the user plane 350 may include some or all of the SDAP sublayer 356, pdcp sublayer 354, rlc sublayer 353 and MAC sublayer 352 at the L2 layer. Although not shown, the UE may also 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., remote UE, server, etc.).

As an example, the entities of the multiple sublayers of the control plane in fig. 3 constitute SRBs in the vertical direction.

As an example, the entities of the multiple sublayers of the control plane in fig. 3 constitute a DRB in the vertical direction.

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

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

As an embodiment, the first signaling in the present application is generated in the RLC303 or RLC353.

As an embodiment, the first signaling in the present application is generated in the PDCP304 or PDCP354.

As an embodiment, the second signaling in the present application is generated in the RLC303 or RLC353.

As an embodiment, the second signaling in the present application is generated in the PDCP304 or PDCP354.

As an embodiment, the first wireless signal in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the second wireless signal in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the second data unit set in the present application is generated in the RLC303 or RLC353.

As an embodiment, the second set of data units in the present application is generated in the PDCP304 or PDCP354.

As an embodiment, the fifth set of data units in the present application is generated in the RLC303 or RLC353.

As an embodiment, the fifth set of data units in the present application is generated in the PDCP304 or PDCP354.

As an embodiment, the first information in the present application is generated in the RRC306.

As an embodiment, the third wireless signal set in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the fourth set of wireless signals in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the second information in the present application is generated in the RRC306.

As an embodiment, the second information in the present application is generated in the PC5-S.

As an embodiment, the third information in the present application is generated in the RRC306.

As an embodiment, the third information in the present application is generated in the PC5-S.

As an embodiment, the L2 layer 305 or 355 belongs to a higher layer.

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

As an embodiment, the V2X layer belongs to a NAS (Non-Access Stratum).

As an embodiment, the data plane of the first node in the present application and the second node in the present application only needs to maintain the connection of the PHY layer and the MAC sublayer.

As an embodiment, the data plane of the second node in the present application and the third node in the present application only needs to maintain the connection of the PHY layer and the MAC sublayer.

As an embodiment, the data plane of the first node in the present application and the second node in the present application only needs to maintain the connection of the PHY layer, the MAC sublayer and the RLC sublayer.

As an embodiment, the data plane of the second node in the present application and the third node in the present application only needs to maintain the connection of the PHY layer, the MAC sublayer and the RLC sublayer.

Example 4

Embodiment 4 illustrates a hardware module diagram of a communication device according to one embodiment of the 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 communication 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 data source 477, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-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, upper layer packets from the core network or upper layer packets from the data source 477 are provided to the controller/processor 475 at the second communication device 410. The core network and data source 477 represent all protocol layers above the L2 layer. The controller/processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, a controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication 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., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal clusters 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 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, 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 a physical channel carrying the time domain multicarrier symbol stream. 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 multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 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 multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for 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. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the 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 signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in 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 that were transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller/processor 459. The controller/processor 459 implements the functions 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 the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the second communication device 410. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, an upper layer data packet is provided to a controller/processor 459 at the first communication device 450 using a data source 467. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, implementing L2 layer functions for the user and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. 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 it to an antenna 452.

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function 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 radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the first communication device 450. Upper layer packets from the controller/processor 475 may be provided to all protocol layers above the core network or L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

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 to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: receiving first signaling over an air interface; transmitting a first wireless signal in response to receiving the first signaling, the first wireless signal including second signaling; receiving a second set of data units over the air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As an embodiment, the first communication device 450 apparatus includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: receiving first signaling over an air interface; transmitting a first wireless signal in response to receiving the first signaling, the first wireless signal including second signaling; receiving a second set of data units over the air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

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: transmitting a first signaling over an air interface; wherein a first wireless signal is received, the first wireless signal comprising second signaling, the second signaling being used to generate a second wireless signal; the second wireless signal is transmitted; a second set of data units is received over the air interface; the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the second node is non-co-located with a receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

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, produce acts comprising: transmitting a first signaling over an air interface; wherein a first wireless signal is received, the first wireless signal comprising second signaling, the second signaling being used to generate a second wireless signal; the second wireless signal is transmitted; a second set of data units is received over the air interface; the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the second node is non-co-located with a receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

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: receiving a second wireless signal, the second wireless signal comprising second signaling; transmitting the second set of data units over the air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the first signaling is sent; the sender of the first signaling is non-co-located with the sender of the second wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

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, produce acts comprising: receiving a second wireless signal, the second wireless signal comprising second signaling; transmitting the second set of data units over the air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the first signaling is sent; the sender of the first signaling is non-co-located with the sender of the second wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As an embodiment, the first communication device 450 corresponds to a first node in the present application; the second communication device 410 corresponds to a second node in the present application.

As an embodiment, the first communication device 450 corresponds to a second node in the present application; the second communication device 410 corresponds to a third node in the present application.

As an embodiment, the first communication device 450 is a UE.

As an embodiment, the first communication device 450 is a V2X enabled user device.

As an embodiment, the first communication device 450 is a D2D enabled user device.

As an embodiment, the first communication device 450 is an in-vehicle device.

As an embodiment, the second communication device 410 is a UE.

As an embodiment, the second communication device 410 is a V2X enabled user device.

As an embodiment, the second communication device 410 is a D2D enabled user device.

As an embodiment, the second communication device 410 is an in-vehicle device.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 are used to transmit the first signaling in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive the first signaling in the present application.

As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468 or the controller/processor 459 is used to transmit the second signaling in the present application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, at least one of the receive processor 470 or the controller/processor 475 are used to receive the second signaling in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 are sent the second set of data units in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive a second set of data units in the present application.

As one example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468 or the controller/processor 459 is used to transmit the first information in the present application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, at least one of the receive processor 470 or the controller/processor 475 are used to receive the first information in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 are used to transmit a third set of data units in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive a third set of data units in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 are used to transmit the second information of the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive second information in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 are used to transmit third information in the present application.

As an example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive a third message in the present application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the application, as shown in fig. 5. In fig. 5, a first node U1 and a second node U2 communicate via a sidelink interface, and the second node U2 and a third node U3 communicate via a sidelink. It is specifically explained that the order in this example does not limit the order of signal transmission and the order of implementation in the present application. As illustrated, the steps in the dashed box F0 and the dashed box F1 are optional.

For the first node U1, receiving second information over the air interface in step S11; receiving third information over the air interface in step S12; transmitting the first information over the air interface in step S13; receiving a third set of data units over the air interface in step S14; receiving first signaling over an air interface in step S15; transmitting a second signaling over the air interface in step S16; a second set of data units is received over the air interface in step S17.

For the second node U2, receiving a fifth wireless signal in step S21, recovering second information from the fifth wireless signal; transmitting the second information in step S22 to be used for generating a sixth wireless signal, and transmitting the sixth wireless signal; receiving a third set of wireless signals, recovering a fourth set of data units from the third set of wireless signals in step S23; receiving first information over an air interface in step S24; in step S25, the fourth set of data units is used to generate a fourth set of wireless signals, and the fourth set of wireless signals is transmitted; the first signaling is sent over the air interface in step S26.

For the third node U3, transmitting second information over the air interface in step S31; transmitting a fifth set of data units over the air interface in step S32; transmitting third information over the air interface in step S33; receiving a second signaling over the air interface in step S34; the second set of data units is transmitted over the air interface in step S35.

It should be noted that, although the fourth node is not shown in fig. 5, the third information, the second signaling and the second data unit set are forwarded by the fourth node, respectively.

As one embodiment, the third node transmits a fifth wireless signal, the fifth wireless signal including the second information; the second node receives the fifth wireless signal, recovers the second information from the fifth wireless signal, and is used for generating the sixth wireless signal transmission; the first node receives the sixth wireless signal and recovers the second information from the sixth wireless signal.

As an embodiment, the second information includes RRC (Radio Resource Control ) information.

As an embodiment, the second information includes PC5-RRC information.

As an embodiment, the second information includes all or part of an IE (Information Element ) in one RRC message.

As an embodiment, the second information includes all or part of a field (field) in one IE in one RRC message.

As an embodiment, the second information includes RRCReconfigurationSidelink (sidelink RRC reconfiguration).

As an embodiment, the second information includes SL-ConfigDedicatedNR (sidelink-new air interface dedicated configuration).

As one embodiment, the second information includes PC5-S (PC 5-Signaling) information.

As an embodiment, in response to receiving the second information, the first node sends fourth information over an air interface, the fourth information including RRCReconfigurationCompleteSidelink (sidelink RRC reconfiguration complete); the third node receives the fourth information over an air interface.

As an embodiment, the second information includes one RRC message including a first identity list and a first configuration.

As an embodiment, the first identity list is RELAYLIST (relay list) fields in one RRC message included in the second message.

As an embodiment, the first identity list is a SL-RELAYLIST (sidelink relay list) domain in one RRC message included in the second message.

As an embodiment, the first identity list includes Q identities, where Q is not greater than 64.

As an embodiment, the number of bits comprised by any one of the Q identities is a positive integer multiple of 8.

As an embodiment, the number of bits comprised by any one of the Q identities is 8.

As an embodiment, the number of bits comprised by any one of the Q identities is 24.

As an embodiment, any one of the Q identities is a link layer identity.

As an embodiment, any of the Q identities is a Layer2 (Layer 2) Identity (Identity).

As an embodiment, the Q identities respectively indicate Q relay nodes.

As an embodiment, any one of the Q identities indicates a node.

As one embodiment, the receiver of the fifth wireless signal includes a node identified by one of the Q identities; said fifth wireless signal comprising a portion of bits of said one identity; the scheduling information of the fifth wireless signal includes remaining part bits of the one identity.

As an embodiment, the scheduling information of the fifth wireless signal is included in physical layer signaling.

As one embodiment, the scheduling information of the fifth wireless signal includes SCI.

As an embodiment, the first configuration is a field in the second information.

As an embodiment, the first configuration is SLRB-Config (sidelink radio bearer configuration) field in the second information.

As an embodiment, the first configuration is slrb-ConfigToAddModList (sidelink radio bearer-added modification configuration list) field in the second information.

As an embodiment, the first parameter set includes at least one of an SDAP (SERVICE DATA Adaptation Protocol, traffic data adaptation protocol) configuration parameter, a PDCP (PACKET DATA Convergence Protocol ) configuration parameter, an RLC (Radio Link Control, radio link layer control protocol) configuration parameter, or a MAC (Medium Access Control ) configuration parameter.

As an embodiment, the first set of parameters is used to configure the first radio bearer.

As an embodiment, the first parameter set includes an LCID corresponding to the first radio bearer.

As an embodiment, the first parameter set includes a first radio bearer identification (bearer ID), the first radio bearer identification indicating the first radio bearer.

As an embodiment, the first bearer identification indicates an end-to-end (Peer-to-Peer) radio bearer.

As an embodiment, the first radio bearer is bi-directional.

As an embodiment, the LCID corresponding to the first radio bearer is used to determine a higher layer entity handling data units belonging to the first radio bearer.

As an embodiment, the LCID corresponding to the first radio bearer is used to determine an RLC entity handling data units belonging to the first radio bearer.

As an embodiment, the first parameter set is used to configure a higher layer entity corresponding to the first radio bearer.

As an embodiment, the higher layer entity corresponding to the first radio bearer includes at least one of an SDAP entity, a PDCP entity, an RLC entity, or a MAC entity.

As an embodiment, the first set of data units and the second set of data units are processed at the higher layer corresponding to the first radio bearer.

As an embodiment, the third node sends a third set of wireless signals, the third set of wireless signals comprising the fifth set of data units; the second node receives the third set of wireless signals, recovers a fourth set of data units from the third set of wireless signals, and is used to generate the fourth set of wireless signals for transmission.

As an embodiment, the fourth set of data units comprises at least one data unit.

As an embodiment, the fifth set of data units comprises the fourth set of data units.

As an embodiment, the sender of the fourth set of wireless signals is identified by one of the Q identities.

As one embodiment, the sender of the fourth set of wireless signals is co-located with the sender of the sixth set of wireless signals.

As one embodiment, the sender of the fourth set of wireless signals is not co-located with the receiver of the first wireless signal.

As an embodiment, the third node sends the third information over an air interface; the third information is received by the first node after being forwarded over the air interface via the fourth node.

As an embodiment, the fourth node is not co-located with the sender of the first signaling.

As an embodiment, the third information includes RRC information.

As an embodiment, the third information includes PC5-RRC information.

As an embodiment, the third information includes all or part of an IE in one RRC message.

As an embodiment, the third information includes all or part of a field in an IE in one RRC message.

As an embodiment, the third information includes RRCReconfigurationSidelink.

As one embodiment, the third information includes PC5-S (PC 5-Signaling) information.

As an embodiment, the first node transmits fifth information in response to receiving the third information, the fifth information comprising RRCReconfigurationCompleteSidelink.

As an embodiment, the third information includes one RRC information including RELAYLIST (relay list) fields; said RELAYLIST includes at least one identity; the RELAYLIST does not include the first identity.

As a sub-embodiment of the above embodiment, the second identity list includes identities included in the RELAYLIST.

As an embodiment, the third information includes one RRC information including FAILRELAYLIST (failed relay list) fields; the FAILRELAYLIST includes at least the first identity.

As a sub-embodiment of the above embodiment, the second identity list includes identities in the first identity list other than the identities included in FAILRELAYLIST.

As an embodiment, the second list of identities includes a positive integer number of identities not greater than 64.

In one embodiment, in response to receiving the third information, the first node updates the first list of identities to include the identities included in the second list of identities and the first identity.

As one embodiment, the third information indicates that the first wireless link failed; one of two nodes linking the first wireless link is identified by the first identity.

As an embodiment, the third information does not trigger the generation of the second signaling.

As an embodiment, one identity of the second list of identities is used to identify the receiver of the first wireless signal.

As an embodiment, the first node transmits first information indicating the first link failure.

As an embodiment, the receiver of the first information comprises a node identified by the first identity.

As an embodiment, the first information includes RRC information.

As an embodiment, the first information comprises PC5-RRC information.

As an embodiment, the first information includes all or part of an IE in one RRC message.

As an embodiment, the first information includes all or part of a field in an IE in one RRC message.

As an embodiment, the first information includes RRCReconfigurationSidelink.

As an embodiment, the first information includes slrb-ConfigToReleaseList (sidelink radio bearer-release configuration list) field in PC5-RRC information.

In one embodiment, the node identified by the first identity transmits a sixth message in response to receiving the first message, the sixth message comprising RRCReconfigurationCompleteSidelink.

As one embodiment, the first node receives the fourth set of wireless signals and recovers a third set of data units from the fourth set of wireless signals.

As an embodiment, the third set of data units comprises 0 data units.

As an embodiment, the third set of data units comprises at least one data unit, any one of the third set of data units belonging to the fourth set of data units.

As an embodiment, the third set of data units and the fifth set of data units are different.

As an embodiment, the number of data units in the third set of data units is smaller than the number of data units in the fifth set of data units.

As an embodiment, the fifth set of data units comprises at least one data unit; at least one data unit of the fifth set of data units does not belong to the third set of data units.

As an embodiment, the fourth set of radio signals comprises at least two radio signals, any two radio signals of the fourth set of radio signals comprising different MAC SDUs.

As an embodiment, the fourth set of radio signals comprises at least two radio signals, and at least two radio signals of the fourth set of radio signals comprise the same MAC SDU.

As an embodiment, the first set of data units comprises a set of data units of the fifth set of data units other than the third set of data units.

As an embodiment, any data unit of the third set of data units does not belong to the first set of data units.

As an embodiment, the first set of data units comprises data units not successfully received by the RLC sublayer of the first node within a first window.

As an embodiment, the first set of data units includes data units that were not successfully received by the PDCP sublayer of the first node within a first window.

As an embodiment, the set of data units cached in the first window includes the third set of data units; and forming the first data unit set by data units of which the sequence numbers are not carried by any data unit in the data unit set cached in the first window.

As an embodiment, 5 data units are cached in the first window, and the carried serial numbers are 3,5,6,7,9 respectively; the first set of data units comprises data units with sequence numbers 4 and 8, respectively.

As an embodiment, the sequence number identifies one PDCP SDU at the PDCP sublayer.

As an embodiment, the sequence number identifies an RLC SDU at the RLC sublayer.

As an embodiment, the PDCP entity of the first node determines the first set of data units according to the methods described in paragraphs 5.2 and 5.4 of the 38.323 protocol of the 3GPP standard.

As an embodiment, the PDCP entity of the first node determines the first set of data units according to the methods described in sections 5.1 and 5.3 of the 36.323 protocol of the 3GPP standard.

As an embodiment, the RLC entity of the first node determines the first set of data units according to the methods described in sections 5.2.3.2 and 5.3.4 of the 38.322 protocol of the 3GPP standard.

As an embodiment, the RLC entity of the first node determines the first set of data units according to the methods described in sections 5.1.3.2 and 5.2.3 of the 36.322 protocol of the 3GPP standard.

As an embodiment, the first window size is configured by a network.

As one embodiment, the first window size indicates a reordering window (reordering window) size.

As one embodiment, the first window size indicates a receive window (RECEIVING WINDOW) size.

As an embodiment, the data unit with the largest sequence number in the first signaling and the fourth data unit set is multiplexed into one MAC PDU to be sent; the third data unit set includes the data unit with the largest sequence number in the fourth data unit set.

As an embodiment, the first signaling is sent after the sending of the data unit with the largest sequence number in the fourth data unit set is completed.

As a sub-embodiment of the above embodiment, the phrase completion transmission includes: the data unit is successfully received.

As a sub-embodiment of the above embodiment, the phrase completion transmission includes: the data unit reaches the maximum number of retransmissions.

As an embodiment, the first signaling is received at a time later than any one of the third set of data units.

As an embodiment, the second node sends the first signaling; in response to transmitting the first signaling, the second node frees up memory space for the fourth set of data units.

As one embodiment, the first signaling is received over an air interface; in response to receiving the first signaling, the first node clears the first identity from the first list of identities.

As an embodiment, physical layer signaling is monitored through a sidelink, and the physical layer signaling includes physical layer signaling corresponding to each identity in the first identity list.

As an embodiment, the physical layer signaling indicates time-frequency resources occupied by the scheduled physical layer channel and modulation coding mode adopted by the wireless signal transmitted on the physical layer channel.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: energy detection is performed for the physical layer signaling over a sidelink.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: blind coding is performed for the physical layer signaling over a sidelink.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: blind coding is performed for the physical layer signaling and energy detection is performed for the physical layer channel over a sidelink.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: blind coding is performed on the physical layer signaling through a sidelink and energy detection is performed on a reference signal included in the physical layer channel.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: and performing blind decoding on the physical layer signaling through a sidelink, performing energy detection on a reference signal included in the physical layer channel and performing decoding on the physical layer channel.

As one embodiment, the phrase monitoring physical layer signaling over a sidelink includes: CRC (Cyclic Redundancy Check ) validation is performed over the sidelink for the physical layer signaling.

As one embodiment, the physical layer signaling is detected when the physical layer signaling is successfully decoded.

As one embodiment, the physical layer signaling is detected when the physical layer signaling passes CRC validation.

As an embodiment, when the detected physical layer signaling includes a portion of bits in any of the identities in the first identity list, channel decoding is performed on a physical layer channel scheduled by the detected physical layer signaling.

As an embodiment, when the detected physical layer signaling does not include a part of bits in any identity in the first identity list, the channel decoding is abandoned for the physical layer channel scheduled by the detected physical layer signaling.

As a sub-embodiment of the two embodiments above, the partial bits include the lower 8 bits of either identity.

As an embodiment, the act of discarding channel decoding of the physical layer channel scheduled by the detected physical layer signaling includes: discarding the detected physical layer signaling.

As an embodiment, the act of discarding channel decoding of the physical layer channel scheduled by the detected physical layer signaling includes: the RSRP (REFERENCE SIGNAL RECEIVED Power ) of the physical layer channel is monitored.

As an embodiment, the act of discarding channel decoding of the physical layer channel scheduled by the detected physical layer signaling includes: a sensing operation is performed for the physical layer channel for transmission resource selection at the time of subsequent data unit transmission.

As an embodiment, the first identity identifies the sender of the first signaling.

As an embodiment, the partial bits comprise 8 bits.

As an embodiment, the partial bits comprise 16 bits.

Example 6

Embodiment 6 illustrates a format diagram of one MAC PDU according to one embodiment of the present application, as shown in fig. 6.

As an embodiment, the one MAC PDU includes a SL-SCH (SIDELINK SHARED CHANNEL ) subheader and at least one MAC subPDU (subPDU), the one MAC subPDU including a MAC subheader and one MAC SDU; the one MAC SDU comprises one RLC subheader and at least one RLC SDU; the one RLC SDU comprises a PDCP subheader and a PDCP SDU; the V field included in the SL-SCH sub-header is used to indicate a version number; the R domain included in the SL-SCH sub-header is reserved; the SRC field included in the SL-SCH sub-header includes 16 bits, a high 16 bits indicating an identity of a sender of the one MAC PDU; the DST field included in the SL-SCH sub-header includes 8 bits, a high 8 bits indicating an identity of a receiver of the one MAC PDU; the R domain included in the MAC sub-header is reserved; the F domain included in the MAC sub-header indicates the length of the L domain included in the MAC sub-header; the L field included in the MAC sub-header indicates the number of bytes included in the one MAC SDU.

As one embodiment, the one MAC PDU includes a part of bits in the identity of the sender of the one MAC PDU; the SCI of the one MAC PDU is scheduled to include the remaining bits in the identity of the sender of the one MAC PDU.

As a sub-embodiment of the above embodiment, the partial bits include the upper 16 bits in the identity of the sender of the one MAC PDU; the remaining bits include the lower 8 bits in the identity of the sender of the one MAC PDU; the upper 16 bits and the lower 8 bits constitute one identity.

As an embodiment, the one MAC PDU includes a part of bits in an identity of a receiver of the one MAC PDU; the SCI of the one MAC PDU is scheduled to include remaining bits in the identity of the receiver of the one MAC PDU.

As a sub-embodiment of the above embodiment, the partial bits include the upper 8 bits in the identity of the receiver of the one MAC PDU; the remaining portion of bits includes the lower 16 bits in the identity of the receiver of the one MAC PDU; the high 8 bits and the low 16 bits constitute one identity.

As an embodiment, the one MAC PDU includes the first signaling.

As an embodiment, the one MAC PDU includes the second signaling.

As an embodiment, the one MAC PDU includes the first information.

As an embodiment, the one MAC PDU includes the second message.

As an embodiment, the one MAC PDU includes the third information.

As an embodiment, the one MAC PDU includes any one data unit of the first set of data units.

As an embodiment, the one MAC PDU includes any one data unit of the second set of data units.

As an embodiment, the one MAC PDU includes any one data unit of the third set of data units.

As an embodiment, the MAC sub-header includes an LCID, where the LCID is used to indicate a radio bearer to which the one MAC SDU belongs.

As an embodiment, the one MAC SDU is distributed to a target RLC entity according to the LCID of the one MAC SDU.

Example 7

Embodiment 7 illustrates a schematic diagram of a second signaling format according to an embodiment of the present application, as shown in fig. 7.

As one embodiment, the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report.

As an embodiment, as shown in fig. 7, the second PDCP control PDU includes a D/C (data/control) field of 0; the PDU type field is 000; r domain is reserved; FMC (FIRST MISSING Count, first packet loss Count value) comprises 32 bits, indicating Count (Count value) of first missing PDCP SDU within the first window, the Count being determined by sequence number of PDCP SDU; the position of any bit from Bitmap1 (bit map) to BitmapN indicates an offset value of the sequence number of the PDCP SDU and the sequence number of the first lost PDCP SDU; indicating that a PDCP SDU corresponding to a sequence number indicated by the position of the arbitrary bit has not been received from the sequence number of the first lost PDCP SDU when the value of the arbitrary bit is 0, and indicating that a PDCP SDU corresponding to a sequence number indicated by the position of the arbitrary bit has been received from the sequence number of the first lost PDCP SDU when the value of the arbitrary bit is 1; wherein the value of Count may be obtained from the first window size and the sequence number of the PDCP SDU according to the method described in section 5.2.2 of protocol 38.323 of the 3GPP standard; when the value of (fmc+bit position) mod 2 ³², which is modulo arithmetic and is not described in section 5.4.1 of protocol 38.323 of the 3GPP standard, is the same as the value of the Count, the bit position indicated by bitposition (bit position) indicates the sequence number of the PDCP SDU.

As an embodiment, the second PDCP control PDU may not include the Bitmap field.

As an embodiment, the second PDCP control PDU includes at least one bit position of 0 in the Bitmap field.

As an embodiment, at least the former of the FMC field and bit position of 0 of the Bitmap in the second PDCP control PDU indicates a lost set of data units; the first set of data units includes the lost set of data units.

As an embodiment, the FMC field in the second PDCP control PDU, at least a first one of a bit position of 0 for the Bitmap and a last 1 for the Bitmap indicates the second set of data units; wherein at least the former of the FMC field and bit position of 0 of the Bitmap indicates the lost set of data units; at least the former of the FMC field and the last 1 bit position in the Bitmap is used to implicitly indicate the sequence number of the next data unit to be received; the second set of data units comprises the lost set of data units and the next data unit to be received and data units following the next data unit to be received.

As a sub-embodiment of the above embodiment, at least the former of the FMC field and the last 1 bit position in the Bitmap is used to indicate a first sequence number, and the sequence number of the next data unit to be received is the first sequence number plus 1; the first sequence number indicates a maximum value in the sequence number set corresponding to the set of received data units.

Example 8

Embodiment 8 illustrates a schematic diagram of another second signaling format according to an embodiment of the present application, as shown in fig. 8.

As one embodiment, the second signaling includes a second RLC control PDU; the second RLC control PDU includes STATUS PDU (STATUS PDU).

As an embodiment, as shown in fig. 8, the second RLC control PDU includes a D/C field of 0; CPT (Control PDU Type), control PDU Type field is 000; an ack_sn (Acknowledgement (ACK) sequence number) field displays a sequence number indicating the RLC SDU to be received next; e1 The (Extension 1) field indicates whether there are more nack_sns, E1, E2 and E3 following; the R domain is reserved; a nack_sn (Negative Acknowledgement (NACK) sequence number) field indicates a sequence number of a missing RLC SDU or a missing RLC SDU fragment (segment); e2 field indicates whether SOstart and SOend exist after NACK_SN field, and NACK_SN field is associated with SOstart and SOend respectively; e3 field indicates whether there is NACK RANGE field after the NACK_SN field, the NACK_SN field is associated with the NACK RANGE; the SOstart and SOend respectively indicate a start byte and a stop byte of the RLC SDU segment indicated by the NACK_SN in an original (original) RLC SDU; the NACK RANGE field indicates the number of RLC SDUs that are consecutively lost from nack_sn; wherein, as shown in fig. 8, the ack_sn field and the nack_sn field respectively include 12 bits, and the ack_sn field and the nack_sn field may also respectively include 18 bits.

As an embodiment, the second RLC control PDU includes at least one nack_sn field.

As an embodiment, the nack_sn field, the SOstart field, the SOend field and at least the foremost of the NACK RANGE fields in the second RLC control PDU are used to indicate the missing set of data units; the first set of data units includes the lost set of data units.

As an embodiment, the nack_sn field, the SOstart field, the SOend field and at least the former of the NACK RANGE fields in the second RLC control PDU indicate a missing set of data units; the ack_sn field in the STATUS PDU indicates a next data unit to be received; the second set of data units comprises the missing data unit and the next to be received data unit and data units following the next to be received data unit.

Example 9

Embodiment 9 illustrates a schematic diagram of a first signaling format according to an embodiment of the present application, as shown in fig. 9.

As an embodiment, the first signaling includes a first MAC sub-PDU, which indicates END MARKER a message.

As an embodiment, when the first MAC sub-PDU includes Private Extension (private extension domain), as shown in case a of fig. 9, the first MAC sub-PDU includes a first MAC sub-header and a first MAC SDU; the R domain included in the first MAC sub-header is reserved; the F domain included in the first MAC sub-header indicates the length of the L domain included in the MAC sub-header; the L domain included in the first MAC subheader indicates the byte number included in the first MAC SDU; the first MAC SDU includes the Private Extension.

As an embodiment, when the first MAC sub-PDU does not include Private Extension, as shown in case B of fig. 9, the first MAC sub-PDU includes only a first MAC sub-header and a necessary padding (padding); and the R domain included in the first MAC sub-header is reserved.

As an embodiment, the LCID field in the first MAC sub-header includes a positive integer with an index of 20 and 61 included between 20 and 61.

As an embodiment, the Private Extension field includes an IE format defined in section 8.6 in protocol 29.281 of the 3GPP standard.

Example 10

Embodiment 10 illustrates a schematic diagram of another first signaling format according to an embodiment of the present application, as shown in fig. 10.

As one embodiment, the first signaling includes a first RLC control PDU; the first RLC control PDU is shown to include END MARKER messages.

As an embodiment, as shown in fig. 10, the first RLC control PDU includes a D/C field of 0; the R domain included in the first RLC control PDU is reserved; private Extension included in the first RLC control PDU is optional.

As an embodiment, the first RLC Control PDU includes a CPT (Control PDU Type) field of 001.

As an embodiment, the first RLC control PDU includes a CPT field of 010.

As an embodiment, the first RLC control PDU includes a CPT field of 011.

As an embodiment, the first RLC control PDU includes a CPT field of 100.

As an embodiment, the first RLC control PDU includes a CPT field of 101.

As an embodiment, the first RLC control PDU includes a CPT field of 110.

As an embodiment, the first RLC control PDU includes a CPT field of 111.

Example 11

Embodiment 11 illustrates a schematic diagram of a wireless protocol architecture for relay transmission according to one embodiment of the present application, as shown in fig. 11. In fig. 11, the RLC sublayer 1113 and the RLC sublayer 1123 are optional.

In fig. 11, in relay transmission, taking an example in which data is transmitted by a first node to a third node (data is equally available to the first node by the third node): the first target data is sequentially processed by the PDCP sublayer 1104 and the RLC sublayer 1103 at the first node side to generate a first target MAC PDU at the MAC sublayer 1102, and then transmitted to the PHY layer 1101, and then transmitted to the PHY layer 1111 of the second node through the air interface, and then sequentially processed by the MAC sublayer 1112 and the RLC sublayer 1113 to recover the first RLC data; the first RLC data is recombined into second RLC data (optional) at the RLC sublayer 1123, and processed by the MAC sublayer 1122 to generate a second target MAC PDU, which is then transferred to the PHY layer 1121; and then transmitted to the PHY layer 1131 of the third node through the air interface, and then sequentially recovered through the MAC sublayer 1132 to obtain a second target MAC PDU, and then sequentially recovered through the RLC sublayer 1133 and the PDCP sublayer 1134 to obtain second target data.

As an embodiment, the first RLC data and the second RLC data are RLC SDUs, respectively.

As an embodiment, the first RLC data and the second RLC data are each segmented for RLC SDUs.

As an embodiment, the RLC sublayer 1123 cannot segment RLC data.

As an embodiment, the RLC sublayer 1123 may perform data combining on RLC data.

As an embodiment, the RLC sublayer 1123 performs no data combining nor data segmentation on RLC data, performs only store, forward, and retransmit if necessary; the second RLC data is identical to the first RLC data.

For one embodiment, the first target data is generated at the RRC/SDAP 1105 and the second target data is communicated to the RRC/SDAP 1135.

As an embodiment, the first target data and the second target data carry the second signaling, respectively.

As an embodiment, the first target data and the second target data carry the second information respectively.

As an embodiment, the first target data and the second target data respectively carry the third information.

As an embodiment, the first target data and the second target data carry the second set of data units, respectively.

As an embodiment, the first target data carries the fifth set of data units.

As an embodiment, the second target data carries the third set of data units.

As an embodiment, the first radio bearer includes entities corresponding to the following sublayers: the PDCP sublayer 1104, the RLC sublayer 1103, the RLC sublayer 1133 and the PDCP sublayer 1134.

As an embodiment, the first radio bearer includes entities corresponding to the following sublayers: the RLC sublayer 1113 and the RLC sublayer 1123.

As an embodiment, the first radio bearer includes entities corresponding to the following sublayers: the RRC/SDAP 1105 and the RRC/SDAP 1135.

As an embodiment, the first radio bearer is multiplexed to a MAC entity corresponding to the MAC sublayer 1102 and a MAC entity corresponding to the MAC sublayer 1132.

As an embodiment, the first information instructs the node identified by the first identity to release the RLC sublayer 1123 corresponding to the first radio bearer.

As an embodiment, the RLC sublayer 1113 corresponding to the first radio bearer is released in response to sending the first signaling.

As an embodiment, although not shown, the second node includes an adaptation (optional) sub-layer; the adaptation sublayer implements relay-related control plane functions.

As an example, if the RLC sublayer 1113 and the RLC sublayer 1123 do not exist, the adaptation sublayer is located above the MAC sublayer 1112 and the MAC sublayer 1122.

As an embodiment, if the RLC sublayer 1113 and the RLC sublayer 1123 exist, the adaptation sublayer is located above the RLC sublayer 1113 and the RLC sublayer 1123.

Example 12

Embodiment 12 illustrates a block diagram of the processing means in the first node according to an embodiment of the application, as shown in fig. 12. In fig. 12, a first node processing apparatus 1200 includes a first receiver 1201 and a first transmitter 1202.

The first receiver 1201 includes at least one of the transmitter/receiver 454 (including the antenna 452), the receive processor 456, the multi-antenna receive processor 458, or the controller/processor 459 of fig. 4 of the present application; the first transmitter 1202 includes at least one of a transmitter/receiver 454 (including an antenna 452), a transmit processor 468, a multi-antenna transmit processor 457, or a controller/processor 459 of fig. 4 of the present application.

In embodiment 12, a first receiver 1201 receives first signaling over an air interface; a first transmitter 1202 that, in response to receiving the first signaling, transmits a first wireless signal comprising second signaling; the first receiver 1201 receives a second set of data units over an air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As an embodiment, the first receiver 1201 clears the first identity from the first identity list in response to receiving the first signaling; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling; wherein the first identity identifies a sender of the first signaling; the number of bits comprised by the partial bits is a positive integer multiple of 8.

As an embodiment, the first receiver 1201 clears the first identity from the first identity list in response to receiving the first signaling; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the first transmitter 1202 transmits first information over an air interface; wherein the first information indicates a first wireless link failure; the recipient of the first information includes a node identified by the first identity.

As an embodiment, the first receiver 1201 receives a third set of data units over an air interface; wherein the third set of data units is used to determine the first set of data units; the first signaling is received at a time not earlier than a time of receipt of any one of the third set of data units.

As an embodiment, the first receiver 1201 clears the first identity from the first identity list in response to receiving the first signaling; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the first receiver 1201 receives the second information over the air interface; wherein the second information comprises the first identity list and a first configuration; q identities are included in the first identity list, and Q is a positive integer; the first configuration includes a first set of parameters, the first set of parameters being used to configure a first radio bearer; the first set of parameters is applicable to the first set of data units and the second set of data units.

As an embodiment, the first receiver 1201 clears the first identity from the first identity list in response to receiving the first signaling; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the first receiver 1201 receives third information over the air interface; wherein the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the receiver of the first wireless signal.

Example 13

Embodiment 13 illustrates a block diagram of the processing means in the second node according to an embodiment of the application, as shown in fig. 13. In fig. 13, the second node processing apparatus 1300 includes a second receiver 1301 and a second transmitter 1302.

The second receiver 1301 includes at least one of the transmitter/receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472, or the controller/processor 475 of fig. 4 of the present application; the second transmitter 1302 includes at least one of the transmitter/receiver 418 (including the antenna 420), the transmit processor 416, the multi-antenna transmit processor 471, or the controller/processor 475 of fig. 4 of the present application.

In embodiment 13, the second transmitter 1302 sends the first signaling over the air interface; wherein a first wireless signal is received, the first wireless signal comprising second signaling, the second signaling being used to generate a second wireless signal; the second wireless signal is transmitted; a second set of data units is received over the air interface; the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the second node is non-co-located with a receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits comprised by the partial bits is a positive integer multiple of 8.

As an embodiment, the second receiver 1301 receives the first information through an air interface; wherein the first information indicates a first wireless link failure.

As an embodiment, the second receiver 1301 receives a third set of wireless signals; the second transmitter 1302 transmits a fourth set of wireless signals; wherein a fourth set of data units is recovered from the third set of wireless signals, the fourth set of data units being used to generate the fourth set of wireless signals; the fourth set of data units comprises a third set of data units; the third set of data units is used to determine the first set of data units; the transmission time of the first signaling is not earlier than the transmission time of any one of the fourth set of wireless signals.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the second receiver 1301 receives a fifth wireless signal; the second transmitter 1302 transmits a sixth wireless signal; wherein second information is recovered from the fifth wireless signal, the second information being used to generate the sixth wireless signal; the second information comprises a first identity list and a first configuration; q identities are included in the first identity list, and Q is a positive integer; the first configuration includes a first set of parameters, the first set of parameters being used to configure a first radio bearer; the first set of parameters is applicable to the first set of data units and the second set of data units.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; third information is received; the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the receiver of the first wireless signal.

Example 14

Embodiment 14 illustrates a block diagram of the processing means in the third node according to an embodiment of the application, as shown in fig. 14. In fig. 14, the third node processing arrangement 1400 comprises a third receiver 1401 and a third transmitter 1402.

The third receiver 1401 includes at least one of the transmitter/receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472, or the controller/processor 475 of fig. 4, including the present application; the second transmitter 1402 includes at least one of the transmitter/receiver 418 (including the antenna 420), the transmit processor 416, the multi-antenna transmit processor 471, or the controller/processor 475 of fig. 4 of the present application.

In embodiment 14, a third receiver 1401 receives a second wireless signal, the second wireless signal comprising second signaling; a third transmitter 1402 that transmits the second set of data units over an air interface; wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the first signaling is sent; the sender of the first signaling is non-co-located with the sender of the second wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the first information is transmitted; wherein the first information indicates a first wireless link failure; the recipient of the first information includes a node identified by the first identity.

As an embodiment, the third transmitter 1402 sends a fifth set of data units over an air interface; the fifth set of data units comprises a third set of data units; wherein the third set of data units is used to determine the first set of data units; the first signaling is received at a time not earlier than a time of receipt of any one of the third set of data units.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the third transmitter 1402 sends second information over an air interface; wherein the second information comprises the first identity list and a first configuration; q identities are included in the first identity list, and Q is a positive integer; the first configuration includes a first set of parameters, the first set of parameters being used to configure a first radio bearer; the first set of parameters is applicable to the first set of data units and the second set of data units.

As one embodiment, the first identity is purged from the first list of identities; monitoring through a sidelink physical layer signaling, when the detected physical layer signaling comprises a part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise a part of bits in any identity in the first identity list, discarding the physical layer channel scheduled by the detected physical layer signaling to perform channel decoding; wherein the first identity identifies a sender of the first signaling; the number of bits included in the partial bits is a positive integer multiple of 8; the third transmitter 1402 sends third information over an air interface; wherein the third information indicates a second list of identities; the second list of identities does not include the first identity; one identity of the second list of identities is used to identify the sender of the second wireless signal.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on 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 using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the present application is not limited to any specific combination of software and hardware. The first type of Communication node or UE or terminal in the present application includes, but is not limited to, wireless Communication devices such as mobile phones, tablet computers, notebooks, network cards, low power devices, eMTC (ENHANCED MACHINE TYPE Communication) devices, NB-IoT devices, vehicle-mounted Communication devices, aircrafts, airplanes, unmanned planes, remote control planes, and the like. The second type of communication node or base station or network side equipment in the present application includes, but is not limited to, wireless communication equipment such as macro cellular base stations, micro cellular base stations, home base stations, relay base stations, enbs, gnbs, transmission receiving nodes TRP (Transmission and Reception Point, transmission and reception points), relay satellites, satellite base stations, air base stations, and the like.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A first node for wireless communication, comprising:

A first receiver that receives first signaling over an air interface;

A first transmitter that transmits a first wireless signal as a response to receiving the first signaling, the first wireless signal including a second signaling; the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report (status report);

The first receiver receiving a second set of data units over an air interface;

Wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the sender of the first signaling is non-co-located with the receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units; the first radio bearer is an AM (acknowledged mode) DRB (data radio bearer); the first set of data units and the second set of data units each include PDCP SDUs(s).

2. The first node of claim 1, comprising:

The first receiver, in response to receiving the first signaling, clearing the first identity from the first identity list; monitoring physical layer signaling through a sidelink, when the detected physical layer signaling comprises part of bits in any identity in the first identity list, performing channel decoding on a physical layer channel scheduled by the detected physical layer signaling, and when the detected physical layer signaling does not comprise part of bits in any identity in the first identity list, discarding performing channel decoding on the physical layer channel scheduled by the detected physical layer signaling;

3. The first node of claim 2, comprising:

the first transmitter transmitting first information over an air interface;

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

The first receiver receiving a third set of data units over an air interface;

5. A first node according to any of claims 2 to 4, comprising:

The first receiver receiving second information over an air interface;

6. A first node according to any of claims 2 to 5, comprising:

The first receiver receiving third information over an air interface;

7. A second node for wireless communication, comprising:

Wherein a first wireless signal is received, the first wireless signal comprising second signaling, the second signaling being used to generate a second wireless signal; the second wireless signal is transmitted; a second set of data units is received over the air interface; the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the second node is non-co-located with a receiver of the first wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units; the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report (status report); the first radio bearer is an AM (acknowledged mode) DRB (data radio bearer); the first set of data units and the second set of data units each include PDCP SDUs(s).

8. A third node for wireless communication, comprising:

A third receiver that receives a second wireless signal, the second wireless signal including second signaling; the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report (status report);

wherein the second signaling indicates that a first set of data units has not been received, both the first set of data units and the second set of data units being transmitted over a first radio bearer; the second signaling is used to determine the second set of data units; the first signaling is sent; the sender of the first signaling is non-co-located with the sender of the second wireless signal; the first set of data units comprises at least one data unit; the second set of data units includes the first set of data units; the first radio bearer is an AM (acknowledged mode) DRB (data radio bearer); the first set of data units and the second set of data units each include PDCP SDUs(s).

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

receiving first signaling over an air interface;

Transmitting a first wireless signal in response to receiving the first signaling, the first wireless signal including second signaling; the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report (status report);

receiving a second set of data units over the air interface;

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

Transmitting a first signaling over an air interface;

11. A method in a third node for wireless communication, comprising:

Receiving a second wireless signal, the second wireless signal comprising second signaling; the second signaling includes a second PDCP control PDU; the second PDCP control PDU includes PDCP status report (status report);

transmitting the second set of data units over the air interface;