CN114698127A

CN114698127A - Method and device used in relay wireless communication

Info

Publication number: CN114698127A
Application number: CN202011630911.4A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-01

Abstract

A method and apparatus used in relay wireless communications is disclosed. The first node determines a first channel; receiving the first channel when the first channel is the first candidate channel; when the first channel is the second candidate channel, transmitting the first channel; wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node. The method and the device can improve the end-to-end QoS in the relay communication.

Description

Method and device used in relay wireless communication

Technical Field

The present invention relates to a method and apparatus in a wireless communication system, and more particularly, to a method and apparatus for determining whether to transmit or receive data when data transmission and reception collide in relay wireless communication.

Background

For the rapidly developed V2X (Vehicle-to-evolution) service, the 3GPP (3rd Generation Partner Project) started SL (Sidelink) standard formulation and research work under the New Radio (NR) framework, and decided to start SI (Study Project) standardization work for NR SL Relay on #86 global meetings of 3GPP RAN (Radio Access Network).

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

Disclosure of Invention

The inventor finds through research that, in relay communication, a data packet belonging to an end-to-end radio bearer is transmitted through two hops, wherein a first-hop data packet is sent from a source node to a relay node, a second-hop data packet is sent from the relay node to a remote node, and in the two-hop transmission, the data packet is configured to be transmitted through two logical channels, and the two logical channels may have the same priority or different priorities. Relay nodes typically operate in a Half-duplex (Half-duplex) mode and therefore cannot transmit and receive data simultaneously. In the prior art, for logical channels associated to different radio bearers, it is determined to perform reception of data or perform transmission of data by comparing logical channel priorities; however, for two logical channels associated to the same end-to-end radio bearer in the relay node, how to determine to perform receiving data or perform sending data needs to be studied.

In view of the above problems, the present application discloses a solution for determining data transmission or data reception according to a predetermined criterion rather than a priority criterion for a scenario that received data and transmitted data belong to the same radio bearer, which can avoid that a high-priority logical channel always has a transmission priority and reduces end-to-end QoS (Quality of Service) in the case of a transmission/reception collision due to different priorities of logical channels to which the received data packet and the transmitted data packet belong. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the original intention of the present application is to target the relay and terminal scenario, the present application is also applicable to the relay and the base station, and achieves similar technical effects in the relay and terminal scenario. Furthermore, adopting a unified solution for different scenarios (including but not limited to V2X scenario and terminal to base station communication scenario) also helps to reduce hardware complexity and cost. In particular, the terms (telematics), nouns, functions, variables in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP specification protocols TS36 series, TS38 series, TS37 series.

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

determining a first channel; the first channel is one of a first candidate channel and a second candidate channel;

receiving the first channel when the first channel is the first candidate channel;

when the first channel is the second candidate channel, transmitting the first channel;

wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node.

As an embodiment, the present application is applicable to a relay node.

As an embodiment, the present application is applicable to UE-to-base station relay transmission, or UE-to-UE relay transmission, or base station-to-UE relay transmission.

As an embodiment, the problem to be solved by the present application is: when received data and transmitted data belong to the same radio bearer and a transmission/reception collision occurs in communication of a relay node, if data transmission or data reception is determined by using a priority criterion, a logical channel with a high priority always has a transmission priority due to the difference in priority of the logical channel to which the received data packet and the transmitted data packet belong, thereby reducing end-to-end QoS (Quality of Service).

As an example, the solution of the present application comprises: when the reception data and the transmission data at the time of the transceiving collision belong to two logical channels of the same radio bearer, data transmission or data reception is determined by a predetermined criterion rather than by a priority criterion.

As an embodiment, the beneficial effects of the present application include: when the received data and the transmitted data in the transceiving conflict belong to two logical channels of the same radio bearer, the end-to-end QoS performance of the service in the relay communication can be remarkably improved by determining the data transmission or the data reception according to the predetermined criterion rather than the priority criterion.

According to one aspect of the application, comprising:

the first logical channel is mapped to the second logical channel; wherein the first logical channel and the second logical channel are both associated to the first radio bearer.

According to one aspect of the application, comprising:

the priority of the first packet is used to determine the priority of the first candidate channel; the priority of the second packet is used to determine the priority of the second candidate channel.

According to one aspect of the application, comprising:

the priority of the first packet is determined by a priority of the first logical channel; the priority of the second packet is determined by a priority of the second logical channel;

wherein the priority of the first logical channel is the same as the priority of the second logical channel, or the priority of the first logical channel is different from the priority of the second logical channel.

According to one aspect of the application, comprising:

the first candidate channel comprises at least one first time unit in the time domain; the second candidate channel comprises at least one second time unit in the time domain; a length of the first time unit is related to a subcarrier spacing of the first candidate channel; the length of the second time unit is related to the subcarrier spacing of the second candidate channel.

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

a first processor to determine a first channel; the first channel is one of a first candidate channel and a second candidate channel;

a first receiver that receives the first channel when the first channel is the first candidate channel;

a first transmitter, configured to transmit the first channel when the first channel is the second candidate channel;

Drawings

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

fig. 1 illustrates a transmission flow diagram of a first node according to an embodiment of the present application;

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

fig. 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

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

fig. 5 illustrates a schematic diagram of logical channels in a first node according to an embodiment of the present application;

FIG. 6 illustrates a time domain relationship diagram of a first candidate channel and a second candidate channel according to one embodiment of the present application;

FIG. 7 illustrates a block diagram of a processing device in a first node according to one embodiment of the present application;

Detailed Description

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

Example 1

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

In embodiment 1, the first node 100 determines a first channel in step 101, the first channel being one of a first candidate channel and a second candidate channel; in step 102, when the first channel is a first candidate channel, receiving the first channel; when the first channel is a second candidate channel, the first channel is sent; wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node.

As an embodiment, the first channel is a physical channel (physical channel).

As an embodiment, the first channel is a transport channel (transport channel).

As an example, how the first channel is selected is implementation dependent for the first node.

As an embodiment, the first candidate channel and the second candidate channel are physical channels, respectively.

As an embodiment, the probability that the first channel is the first candidate channel or the second candidate channel is the same.

As an embodiment, the first channel is the first candidate channel or the second candidate channel is random.

As one embodiment, the first node selects the first channel according to a predetermined criterion.

As one embodiment, the predetermined criteria includes selecting the first candidate channel with a first probability; selecting the second candidate channel with a second probability; the sum of the first probability and the second probability is 1.

As an embodiment, the first processor generates a random number; the random number takes a value between 0 and 1; wherein the first channel is the first candidate channel when the random number is less than the first probability; when the random number is greater than the first probability, the first channel is the second candidate channel.

As an embodiment, the first processor generates a random number; the value of the random number is between 0 and 1; wherein the first channel is the first candidate channel when the random number is equal to the first probability.

As an embodiment, the first processor generates a random number; the value of the random number is between 0 and 1; wherein the first channel is the second candidate channel when the random number is equal to the first probability.

As an example, the first probability is 0.5.

As an example, the first probability is 0.6.

As an example, the first probability is 0.4.

As an embodiment, the predetermined criterion is alternate selection, including: alternately, receiving or transmitting is selected.

As a sub-embodiment of the foregoing embodiment, when it is determined that the behavior of the first channel is odd times this time, the first channel is the first candidate channel; and when the behavior of the first channel is determined to be even times at this time, the first channel is the second candidate channel.

As an embodiment, the predetermined criterion is alternate selection, including: and selecting n times of sending after m times of receiving in turn.

As a sub-embodiment of the above-described embodiment, when it is determined this time that the behavior of the first channel is the (m + n) × k +1, …, (m + n) × k + m times, the first channel is the first candidate channel; when the behavior of the first channel is determined to be (m + n) × k + m +1, …, (m + n) × k + m + n times at this time, the first channel is the second candidate channel; wherein m and n are respectively positive integers not less than 1; and k is a non-negative integer.

As an embodiment, m and n are each a positive integer not greater than 1500.

As an embodiment, m is 1 and n is 1.

As an example, m is 2 and n is 1.

As an example, m is 1 and n is 2.

As an embodiment, the first candidate channel and the second candidate channel are respectively transport channels.

As an embodiment, the first candidate CHannel is a psch (Physical Sidelink Shared CHannel).

As an embodiment, the first candidate CHannel is a PDSCH (Physical Downlink Shared CHannel).

As an embodiment, the first candidate CHannel is a PUSCH (Physical Uplink Shared CHannel).

For one embodiment, the second candidate channel is a psch.

As one embodiment, the second candidate channel is a PDSCH.

As an embodiment, the second candidate channel is a PUSCH.

In one embodiment, the first candidate channel is one of a psch, a PDSCH, or a PUSCH.

In one embodiment, the second candidate channel is one of a psch, a PDSCH, or a PUSCH.

As an embodiment, the first candidate channel is a psch; the second candidate channel is a PSSCH.

As an embodiment, the first candidate channel is a psch; the second candidate channel is a PUSCH.

As an embodiment, the first candidate channel is a PDSCH; the second candidate channel is a PSSCH.

As an embodiment, the first channel is received when the first channel is the first candidate channel.

As an embodiment, the first channel is transmitted when the first channel is the second candidate channel.

As an embodiment, the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel.

As one embodiment, the determination of the first channel is not affected by the priority of the first candidate channel and the priority of the second candidate channel.

As one embodiment, the priority of the first candidate channel and the priority of the second candidate channel are not used to determine the first channel.

As an embodiment, the first candidate channel and the second candidate channel at least partially overlap in a time domain.

As an embodiment, the first candidate channel and the second candidate channel overlap in time domain for a period of time.

As an embodiment, the first candidate channel and the second candidate channel completely overlap in a time domain.

For one embodiment, the first candidate channel is used to receive the first data packet.

For one embodiment, the second candidate channel is used to transmit the second packet.

As an embodiment, the first Data packet includes a MAC (Medium Access Control) SDU (Service Data Unit).

As an embodiment, the first data packet includes an RLC (Radio Link Control protocol) SDU.

As an embodiment, the first packet includes an RLC PDU (Protocol Data Unit).

As an embodiment, the second data packet includes a MAC SDU.

As an embodiment, the second data packet includes an RLC SDU.

For one embodiment, the second packet includes an RLC PDU.

As an embodiment, the first data packet belongs to the first logical channel.

As an embodiment, the second data packet belongs to the second logical channel.

As an embodiment, the first data packet is received through the first logical channel.

As an embodiment, the second data packet is transmitted through the second logical channel.

As an embodiment, the first logical channel and the second logical channel have different QoS (Quality of Service) characteristics.

As an embodiment, the first logical channel and the second logical channel have the same QoS characteristics.

As an embodiment, the first logical channel and the second logical channel have different PDBs (Packet Delay Budget).

As one embodiment, the first logical channel and the second logical channel have the same PDB.

As an embodiment, the first logical channel is an ingress (PC) 5 logical channel of the first node; the second logical channel is an egress (egres) PC5 logical channel of the first node; the first node is a relay node.

As an embodiment, the first logical channel is an ingress Uu logical channel of the first node; the second logical channel is an egress (egres) PC5 logical channel of the first node; the first node is a relay node.

As an embodiment, the first logical channel is an ingress (PC) 5 logical channel of the first node; the second logical channel is an outgoing (egr) Uu logical channel of the first node; the first node is a relay node.

As an embodiment, the Uu logical channel is used by the first node to send a data packet to a base station; the data packet is received from a source node; the first node is a relay node.

As an embodiment, the in-Uu logical channel is used by the first node for receiving data packets from a base station; the data packet is forwarded to a remote node; the first node is a relay node.

As an embodiment, the out-Uu logical channel or the in-Uu logical channel is used for relaying transmissions in the Uu air interface in communication.

For one embodiment, the outbound PC5 logical channel is used by the first node to send data packets to a remote node; the data packet is received from a source node; the first node is a relay node.

For one embodiment, the inbound PC5 logical channel is used by the first node to receive packets from a source node; the data packet is forwarded to a remote node; the first node is a relay node.

As a sub-embodiment of the two embodiments described above, the source node and the remote node are not co-located.

As an example, the out PC5 logical channel or the in PC5 logical channel is used to relay transmissions in communications over the PC5 air interface.

As an embodiment, the first logical channel and the second logical channel both belong to the first node.

As an embodiment, the first logical channel and the second logical channel are both configured to the first node.

As an embodiment, the logical channels and the RLC channels correspond one to one; the data packets transmitted through the logical channel are transmitted through the RLC channel; and vice versa.

For one embodiment, the first logical channel and the second logical channel are of the same logical channel type.

As a sub-embodiment of the foregoing embodiment, the logical CHannel types of the first logical CHannel and the second logical CHannel are STCH (Sidelink Traffic CHannel), respectively.

As a sub-embodiment of the foregoing embodiment, the logical CHannel types of the first logical CHannel and the second logical CHannel are SCCH (Sidelink Control CHannel), respectively.

For one embodiment, the first logical channel and the second logical channel are of different logical channel types.

As a sub-embodiment of the foregoing embodiment, the logical CHannel type of the first logical CHannel is DTCH (Dedicated Traffic CHannel); the logical channel type of the second logical channel is STCH.

As a sub-embodiment of the above embodiment, the logical channel type of the first logical channel is DTCH; the logical channel type of the second logical channel is SCCH.

As a sub-embodiment of the foregoing embodiment, the logical CHannel type of the first logical CHannel is a DCCH (Dedicated Control CHannel); the logical channel type of the second logical channel is SCCH.

As a sub-embodiment of the foregoing embodiment, the logical channel type of the first logical channel is a DCCH; the logical channel type of the second logical channel is STCH.

As a sub-embodiment of the foregoing embodiment, the logical channel type of the first logical channel is STCH; the logical channel type of the second logical channel is DTCH.

As a sub-embodiment of the foregoing embodiment, the logical channel type of the first logical channel is STCH; the logical channel type of the second logical channel is DCCH.

As a sub-embodiment of the foregoing embodiment, the logical channel type of the first logical channel is SCCH; the logical channel type of the second logical channel is DTCH.

As a sub-embodiment of the foregoing embodiment, the logical channel type of the first logical channel is SCCH; the logical channel type of the second logical channel is DCCH.

As an embodiment, the first Logical Channel is identified by a first LCID (Logical Channel IDentity); and the data packet transmitted through the first logic channel carries the first LCID.

For one embodiment, the first LCID is used to indicate a first RLC entity (entity).

As an embodiment, the first logical channel is identified by the first LCID and a first source layer 2 identification (source layer-2ID) and destination layer 2 identification (destination layer-2ID) pair (pair).

As one embodiment, the first LCID and the first source layer 2 identification and target layer 2 identification pair are used to indicate the first RLC entity.

As an embodiment, the data packet carrying the first LCID is processed by the first RLC entity.

As an embodiment, the second logical channel is identified by a second LCID; and the data packet transmitted through the second logic channel carries the second LCID.

For one embodiment, the second LCID is used to indicate a second RLC entity.

As an embodiment, the second logical channel is identified by the second LCID and a second source layer 2 identification (source layer-2ID) and destination layer 2 identification (destination layer-2ID) pair (pair).

As an embodiment, the second LCID and the second source layer 2 identification and target layer 2 identification pair are used to indicate the second RLC entity.

As an embodiment, the data packet carrying the second LCID is processed by the second RLC entity.

As one embodiment, the LCID identifying the first logical channel and the LCID identifying the second logical channel are different.

As an example, the first logical channel belongs to the first source layer 2 identity and target layer 2 identity pair (pair); the second logical channel belongs to the second source layer 2 identity and target layer 2 identity pair (pair); the first source layer 2 identification and target layer 2 identification pair (pair) and the second source layer 2 identification and target layer 2 identification pair (pair) are different.

As an example, the first source layer 2 identification and target layer 2 identification pair (pair) and the second source layer 2 identification and target layer 2 identification pair (pair) are different including: a source layer 2 identification of the first source layer 2 identification and target layer 2 identification pair (pair) and a source layer 2 identification of the second source layer 2 identification and target layer 2 identification pair (pair) are different; or at least one of the first source layer 2 identifier and the target layer 2 identifier in the target layer 2 identifier pair (pair) and the second source layer 2 identifier and the target layer 2 identifier in the target layer 2 identifier pair (pair) are different.

As an embodiment, the first data packet and the second data packet both belong to the first radio bearer.

As an embodiment, the data packet transmitted through the first logical channel is transmitted through the first radio bearer.

As an embodiment, the data packet transmitted through the second logical channel is transmitted through the first radio bearer.

As an embodiment, both the data packet received through the first logical channel and the data packet transmitted through the second logical channel belong to the first radio bearer.

As an embodiment, the first Radio Bearer is a Signaling Radio Bearer (SRB).

As an embodiment, the first radio bearer is signaling radio bearer 1(SRB 1).

For one embodiment, the first radio bearer is signaling radio bearer 2(SRB 2).

For one embodiment, the first radio bearer is signaling radio bearer 3(SRB 3).

As one embodiment, the first Radio Bearer is a Data Radio Bearer (DRB).

As one embodiment, the first radio bearer is indicated by a first radio bearer identity.

As an embodiment, the type of the first radio bearer is one of a signaling radio bearer or a data radio bearer.

As an embodiment, the first radio bearer is used for one of traffic (traffic) or signaling (signaling).

As one embodiment, the signaling includes RRC signaling.

As an embodiment, the signaling comprises NAS (non-access stratum) signaling.

As an embodiment, the signaling comprises PC5-S (PC5-signaling, PC5 signaling) messages.

Example 2

Embodiment 2 illustrates a network architecture diagram according to an embodiment of the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 of NR 5G, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The NR 5G, LTE or LTE-a network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via Xn interfaces (e.g., backhaul links). The XnAP protocol of the Xn interface is used to transmit control plane messages of the wireless network, and the user plane protocol of the Xn interface is used to transmit user plane data. The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (Transmission Reception Point), or some other suitable terminology, and in an NTN (Non Terrestrial/satellite Network) Network, the gNB203 may be a satellite, an aircraft, or a ground base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a Digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a vehicular device, a vehicular communication unit, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 through the S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. MME/AMF/SMF211 is a control node that handles signaling between UE201 and 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW/UPF212, and the S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include an internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS (Packet Switching) streaming service.

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

As an embodiment, the UE241 corresponds to a first node in the present application.

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

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

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

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

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

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

As an embodiment, the gNB203 is a satellite device.

As an embodiment, the gNB203 is a testing device (e.g., a transceiver simulating a function of a base station part, a signaling tester).

As an embodiment, the radio link from the UE201 to the gNB203 is an uplink, which is used to perform uplink transmissions.

As an embodiment, the radio link from the gNB203 to the UE201 is a downlink, which is used to perform downlink transmission.

As an embodiment, the wireless link between the UE201 and the UE241 is a sidelink, which is used to perform sidelink transmissions.

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

As an embodiment, the UE241 and the gNB203 are connected through a Uu air interface.

For one embodiment, the UE201 and the UE241 are connected through an air interface of PC 5.

Example 3

Embodiment 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture of the control plane 300 for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301, and is responsible for the link between the UE and the gNB through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gbb 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 the gnbs. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of lost packets by ARQ, and duplicate 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 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, the UE may further have a V2X layer above the RRC sublayer 306 in the control plane 300, where the V2X layer is responsible for generating a PC5QoS parameter set and a QoS rule according to received service data or a service request, generating a PC5QoS stream corresponding to the PC5QoS parameter set and sending the PC5QoS stream identifier and the corresponding PC5QoS parameter set to an AS (Access Stratum) layer for QoS processing of a packet belonging to the PC5QoS stream identifier by the AS layer; the V2X layer also comprises a PC5-S Signaling Protocol (PC5-Signaling Protocol) sub-layer, and the V2X layer is responsible for indicating whether each transmission of the AS layer is PC5-S transmission or V2X service 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, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS (Quality of Service) streams and Data Radio Bearers (DRBs) to support diversity of services. The radio protocol architecture of the UE in the user plane 350 may include part or all of the protocol sublayers of the SDAP sublayer 356, the PDCP sublayer 354, the RLC sublayer 353, and the 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., far end UE, server, etc.).

As an embodiment, the RLC channel includes an SAP (Service Access Point) between the RLC303 and the PDCP 304.

As an example, an RLC channel includes an SAP between the RLC353 and the PDCP354

As an example, a logical channel (logical channel) includes a SAP between the RLC303 and the MAC 302.

For one embodiment, a logical channel includes a SAP between the RLC353 and the MAC 352.

As an embodiment, a transport channel (transport channel) includes a SAP between the MAC302 and the PHY 301.

For one embodiment, the transport channel includes a SAP between the MAC352 and the PHY 351.

As an embodiment, the entities of the multiple sub-layers of the control plane in fig. 3 constitute an SRB (Signaling Radio Bearer) in the vertical direction.

As an embodiment, entities of a plurality of sub-layers of the user plane in fig. 3 constitute a DRB (Data Radio Bearer) in a vertical direction.

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

As an embodiment, the first packet in this application is generated in the MAC 302.

As an embodiment, the first packet in this application is generated in the MAC 352.

As an embodiment, the second packet in this application is generated in the MAC 302.

As an embodiment, the second packet in this application is generated in the MAC 352.

As an embodiment, the first candidate channel in this application is generated in the PHY 301.

As an embodiment, the first candidate channel in this application is generated in the PHY 351.

As an embodiment, the second candidate channel in this application is generated in the PHY 301.

As an embodiment, the second candidate channel in this application is generated in the PHY 351.

As an example, the

L2 layer

305 or 355 belongs to a higher layer.

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

Example 4

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

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

The second communication device 410 includes a controller/processor 475, a memory 476, a data source 477, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, an upper layer data packet from the core network or an upper layer data packet from a data source 477 is provided to the controller/processor 475. The core network and data source 477 represents all protocol layers above the L2 layer. The controller/processor 475 implements the functionality of layer L2. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

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

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

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives rf signals through its respective antenna 420, converts the received rf 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 multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communication device 450 to the second communication device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the first communication device 450. Upper layer packets from the controller/processor 475 may be provided to the core network or all protocol layers above the 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 configured to, for use with the at least one processor, the first communication device 450 apparatus at least: determining a first channel; the first channel is one of a first candidate channel and a second candidate channel; receiving the first channel when the first channel is the first candidate channel; when the first channel is the second candidate channel, transmitting the first channel; wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node.

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 result in actions comprising: determining a first channel; the first channel is one of a first candidate channel and a second candidate channel; receiving the first channel when the first channel is the first candidate channel; when the first channel is the second candidate channel, transmitting the first channel; wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node.

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.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions, which when executed by at least one processor result in actions.

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

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

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

For one embodiment, the first communication device 450 is an RSU.

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

For one embodiment, the second communication device 410 is an RSU.

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

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

For one 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 first candidate channel in the present application.

For one embodiment, at least one of the antennas 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, or the controller/processor 459 is configured to transmit a second candidate channel in this application.

For one embodiment, at least one of the receive processor 456 or the controller/processor 459 is configured to determine a first channel in the present application.

For one embodiment, at least one of the antennas 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470 or the controller/processor 475 is configured to receive a second candidate channel in the present application.

For one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller/processor 475 is configured to transmit the first candidate channel.

Example 5

Embodiment 5 illustrates a schematic diagram of logical channels in a first node according to an embodiment of the present application, as shown in fig. 5. The RAP sublayer in the dashed box in fig. 5 is optional.

As one embodiment, the first logical channel is mapped to the second logical channel.

As an embodiment, data packets transmitted over the first logical channel are mapped to be transmitted over the second logical channel.

As an embodiment, the first RLC entity and the second RLC entity are associated.

As an embodiment, data packets processed by the first RLC entity are mapped to be processed by the second RLC entity.

As an embodiment, the data packet processed by the first RLC entity is sent to the second RLC entity for processing after being processed by a RAP (Relay Adaptation Protocol) entity.

As an embodiment, the first node configures the first logical channel to be mapped to the second logical channel.

As an embodiment, the serving base station of the first node configures the first logical channel to be mapped to the second logical channel.

As an embodiment, the RAP sublayer implements a Bearer mapping (Bearer mapping) function.

As an embodiment, the bearer mapping function forwards the data packet received from the first logical channel to the second logical channel for transmission.

As an embodiment, the bearer mapping function forwards the data packet received from the first RLC entity to the second RLC entity for processing.

In fig. 5, the data packets processed by the first RLC entity belong to the first logical channel, and the data packets processed by the second RLC entity belong to the second logical channel; the data packet processed by the first RLC entity is mapped to the second RLC entity after being processed by the RAP entity.

As an embodiment, the first logical channel and the second logical channel are both associated to the first radio bearer.

As an embodiment, the data packet transmitted through the first logical channel carries the first radio bearer identity.

As an embodiment, the data packet transmitted through the second logical channel carries the first radio bearer identity.

As an embodiment, the first logical channel and the second logical channel belong to the first radio bearer.

As an embodiment, the first logical channel and the second logical channel correspond to the first radio bearer.

As an embodiment, the first logical channel and the second logical channel are configured by two RRC connections.

As an embodiment, a first RRC connection is used to configure the first logical channel; a second RRC connection is used to configure the second logical channel.

As an embodiment, the first radio bearer is an End-to-End (End-to-End) radio bearer, and the first radio bearer includes at least two Point-to-Point (Point-to-Point) radio bearers.

As an embodiment, the first radio bearer is an end-to-end radio bearer, and the first radio bearer includes a second radio bearer and a third radio bearer; wherein the second radio bearer corresponds to the first logical channel; the third radio bearer corresponds to the second logical channel.

For one embodiment, the end-to-end radio bearer is an end-to-end logical channel.

In fig. 5, the first radio bearer is an end-to-end radio bearer established between the third node and the second node.

In fig. 5, the first radio bearer includes a second radio bearer and a third radio bearer; the second radio bearer is a radio bearer between the third node and the first node; the third radio bearer is a radio bearer between the first node and the second node; wherein the second radio bearer corresponds to the first logical channel; the third radio bearer corresponds to the second logical channel; the RLC entity corresponding to the first logic channel and the RLC entity of the opposite communication terminal communicate through a first air interface; and the RLC entity corresponding to the second logic channel and the RLC entity of the opposite communication terminal communicate through a second air interface.

For one embodiment, the first air interface is either Uu or PC 5.

For one embodiment, the second air interface is either Uu or PC 5.

As an embodiment, the second radio bearer is a Uu radio bearer; the third radio bearer is a PC5 radio bearer.

For one embodiment, the second radio bearer is a PC5 radio bearer; the third radio bearer is a PC5 radio bearer.

For one embodiment, the second radio bearer is a PC5 radio bearer; the third radio bearer is a Uu radio bearer.

As an embodiment, the Uu radio bearer corresponds to an ingress Uu logical channel or an egress Uu logical channel.

As an example, the PC5 radio bearer corresponds to an ingress PC5 logical channel or an egress PC5 logical channel.

As an embodiment, the RAP sub-layer implements Routing (Routing) functionality.

In fig. 5, the routing function forwards packets received from the third node to the second node; the RLC entity included by the third node corresponds to the first RLC entity; the RLC entity included in the second node corresponds to the second RLC entity.

In fig. 5, the third node is a base station, the second node is a user equipment, and the first node is a relay node.

In fig. 5, the third node is a user equipment, the second node is a user equipment, and the first node is a relay node.

In fig. 5, the third node is a user equipment, the second node is a base station, and the first node is a relay node.

As one embodiment, the priority of the first logical channel is the same as the priority of the first packet.

As one embodiment, the priority of the second logical channel is the same as the priority of the second packet.

As an embodiment, when the first logical channel is an in-Uu logical channel or an out-Uu logical channel, the priority of the first logical channel is a positive integer between 1 and 16 including 1 and 16.

As an embodiment, when the first logical channel is an ingress Uu logical channel or an egress Uu logical channel, the priority of the first logical channel is 0 or 1.

As an embodiment, when the first logical channel is an ingress PC5 logical channel or an egress PC5 logical channel, the priority of the first logical channel is a positive integer between 1 and 8 including 1 and 8.

As an embodiment, when the second logical channel is an in-Uu logical channel or an out-Uu logical channel, the priority of the first logical channel is a positive integer between 1 and 16 including 1 and 16.

As an embodiment, when the second logical channel is an in-Uu logical channel or an out-Uu logical channel, the priority of the first logical channel is 0 or 1.

As an embodiment, when the second logical channel is an ingress PC5 logical channel or an egress PC5 logical channel, the priority of the first logical channel is a positive integer between 1 and 8 including 1 and 8.

As an embodiment, when the first logical channel is a Uu logical channel and the second logical channel is a PC5 logical channel, or the first logical channel is a PC5 logical channel and the second logical channel is a Uu logical channel, the priority of the first logical channel is mapped to the same dimensional metric as the priority of the second logical channel, or the priority of the second logical channel is mapped to the same dimensional metric as the priority of the first logical channel.

For one embodiment, the priority of the first candidate channel is the same as the priority of the first packet.

For one embodiment, the priority of the second candidate channel is the same as the priority of the second packet.

For one embodiment, the first candidate channel is used to receive the first data packet and at least one other data packet; the at least one other data packet belongs to a logical channel other than the first logical channel and the second logical channel; the logical channel to which the first packet belongs has the highest priority.

For one embodiment, the second candidate channel is used to transmit the second data packet and at least one other data packet; the at least one other data packet belongs to a logical channel other than the first logical channel and the second logical channel; the logical channel to which the second packet belongs has the highest priority.

As an embodiment, the second channel is used to receive a third data packet; the third packet is indicated by the first LCID; the third data packet belongs to the first logical channel.

As an embodiment, the priority of the third data packet is the same as the priority of the first logical channel.

As an embodiment, the priority of the second channel is the same as the priority of the third packet.

As an embodiment, the end time of the second channel is earlier than the start time of the first channel.

As one embodiment, the control information for scheduling the second channel indicates time domain resources of the first candidate channel.

As one embodiment, the time domain resources of the first candidate channel are reserved by the control information scheduling the second channel.

As one embodiment, the control information scheduling the second channel is used to determine the priority of the first candidate channel.

As an embodiment, a PPPP (ProSe Per Packet Priority) field in the control information scheduling the second channel is used to determine the Priority of the first candidate channel.

As an embodiment, the control information scheduling the second channel indicates that the first candidate channel is used for transmitting data packets belonging to the first logical channel.

As an embodiment, the Control Information for scheduling the second channel is DCI (Downlink Control Information).

As an embodiment, the Control Information for scheduling the second channel is SCI (Sidelink Control Information).

As one embodiment, control information scheduling the first candidate channel is used to determine the priority of the first candidate channel.

As one embodiment, control information scheduling the second candidate channel is used to determine the priority of the second candidate channel.

As one embodiment, a PPPP field in control information scheduling the first candidate channel is used to determine the priority of the first candidate channel.

As one embodiment, a PPPP field in control information scheduling the second candidate channel is used to determine the priority of the second candidate channel.

As an embodiment, the control information for scheduling the first candidate channel is DCI.

As an embodiment, the control information scheduling the first candidate channel is SCI.

As an embodiment, the control information for scheduling the second candidate channel is DCI.

As an embodiment, the control information scheduling the second candidate channel is SCI.

As an embodiment, the PPPP field is a positive integer between 0 and 7 including 0 and 7; the value of the PPPP field plus 1 corresponds to the priority of the PC5 logical channel.

For one embodiment, the PC5 logical channel is an ingress PC5 logical channel or an egress PC5 logical channel.

As an embodiment, the Uu logical channel is an in-Uu logical channel or an out-Uu logical channel.

As one embodiment, the priority of the first logical channel and the priority of the second logical channel are the same.

As an embodiment, the priority of the first logical channel and the priority of the second logical channel are different.

As one embodiment, the priority of the first candidate channel and the priority of the second candidate channel are the same.

As one embodiment, the priority of the first candidate channel and the priority of the second candidate channel are different.

For one embodiment, the priority of the first candidate channel is higher than the priority of the second candidate channel.

As one embodiment, the priority of the first candidate channel is lower than the priority of the second candidate channel.

Example 6

Embodiment 6 illustrates a time domain relationship diagram of a first candidate channel and a second candidate channel according to an embodiment of the application, as shown in fig. 6.

For one embodiment, the first candidate channel includes at least one first time unit in a time domain.

For one embodiment, the first candidate channel includes a positive integer number of first time units in the time domain.

As an embodiment, the first time unit is a multi-carrier symbol (symbol), and the multi-carrier symbol further includes a Cyclic Prefix (CP).

As an embodiment, the first time unit is an OFDM (Orthogonal frequency-division multiplexing) symbol (symbol), and the OFDM symbol further includes a CP.

As an embodiment, the first time unit is a mini-slot (mini-slot).

As an embodiment, the first time unit is a slot (slot).

As an embodiment, the one slot includes 12 or 14 OFDM symbols.

As an embodiment, the one slot includes not less than 4 OFDM symbols.

As an embodiment, the one micro slot includes 2, 4 or 7 OFDM symbols.

As an embodiment, the length of the OFDM symbol is related to a subcarrier spacing of the first candidate channel.

For one embodiment, the second candidate channel includes at least one second time unit in the time domain.

For one embodiment, the second candidate channel includes a positive integer number of second time units in the time domain.

As an embodiment, the second time unit is a multi-carrier symbol (symbol), and the multi-carrier symbol further includes a CP.

As an embodiment, the second time unit is an OFDM symbol (symbol), and the OFDM symbol further includes a CP.

As an embodiment, the second time unit is a mini-slot.

As an embodiment, the second time unit is a slot (slot).

As an embodiment, the length of the second time unit is related to a subcarrier spacing of the second candidate channel.

As an embodiment, the length of the OFDM symbol is 1000/(14 multiplied by 2)^μ) The method is delicate; wherein mu is 0, 1, 2, 3 and 4, respectively corresponding to subcarrier spacing of 15KHz, 30KHz, 60KHz, 120KHz and 240 KHz.

As an embodiment, the starting time of the first candidate channel and the starting time of the second candidate channel are the same, and the first candidate channel and the second candidate channel overlap in a time domain by a period of time (a period of time).

As an embodiment, the starting time of the first candidate channel and the starting time of the second candidate channel are different, and the first candidate channel and the second candidate channel overlap in a time domain by a period of time (a period of time).

As an embodiment, at least one OFDM symbol of the first candidate channel and the second candidate channel overlap in the time domain.

In fig. 6, case a depicts that the first candidate channel and the second candidate channel completely overlap in the time domain; case B describes that the starting time of the first candidate channel and the starting time of the second candidate channel are the same, and a part of the time domain resources of the first candidate channel and the time domain resources of the second candidate channel overlap; case C describes the start time of the first candidate channel being later than the start time of the second candidate channel; a portion of the time domain resources of the first candidate channel and a portion of the time domain resources of the second candidate channel overlap.

As an embodiment, in case B and case C described in fig. 6, the first candidate channel and the second candidate channel may be interchanged, and the description that the first candidate channel and the second candidate channel at least partially overlap in the time domain in this application also applies, and is not repeated herein.

As an embodiment, the first candidate channel and the second candidate channel are orthogonal in the frequency domain, or have a partial overlap, which is not limited herein.

A scenario in which the first candidate channel and the second candidate channel are orthogonal in the frequency domain is depicted in fig. 6.

Example 7

Embodiment 7 illustrates a block diagram of a processing apparatus in a first node according to an embodiment of the present application, as shown in fig. 7. In fig. 7, a first node processing apparatus 700 includes a first receiver 701, a first transmitter 702, and a first processor 703. The first receiver 701 includes at least one of the transmitter/receiver 454 (including the antenna 452), the receive processor 456, the multiple antenna receive processor 458, or the controller/processor 459 of fig. 4 herein; the first transmitter 702 includes at least one of the transmitter/receiver 454 (including the antenna 452), the transmit processor 468, the multi-antenna transmit processor 457, or the controller/processor 459 of fig. 4 herein; the first processor 703 includes at least one of the receive processor 456 or the controller/processor 459 of fig. 4 of the present application.

In embodiment 7, the first processor 703 determines a first channel; the first channel is one of a first candidate channel and a second candidate channel; a first receiver 701, configured to receive the first channel when the first channel is the first candidate channel; a first transmitter 702, configured to transmit the first channel when the first channel is the second candidate channel; wherein the first candidate channel and the second candidate channel at least partially overlap in a time domain; the determination of the first channel is independent of the priority of the first candidate channel and the priority of the second candidate channel; the first candidate channel is used for receiving a first data packet, wherein the first data packet belongs to a first logical channel; the second candidate channel is used for sending a second data packet, and the second data packet belongs to a second logical channel; the first data packet and the second data packet both belong to a first radio bearer; the first logical channel and the second logical channel both belong to the first node.

As one embodiment, the first logical channel is mapped to the second logical channel; wherein the first logical channel and the second logical channel are both associated to the first radio bearer.

As an embodiment, the priority of the first packet is used to determine the priority of the first candidate channel; the priority of the second packet is used to determine the priority of the second candidate channel.

As an embodiment, the priority of the first packet is determined by a priority of the first logical channel; the priority of the second packet is determined by a priority of the second logical channel; wherein the priority of the first logical channel is the same as the priority of the second logical channel, or the priority of the first logical channel is different from the priority of the second logical channel.

As an embodiment, the first candidate channel includes at least one first time unit in a time domain; the second candidate channel comprises at least one second time unit in the time domain; a length of the first time unit is related to a subcarrier spacing of the first candidate channel; the length of the second time unit is related to the subcarrier spacing of the second candidate channel.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first Type of Communication node or UE or terminal in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, a network card, a low power consumption device, an eMTC (enhanced Machine Type Communication) device, an NB-IoT device, a vehicle-mounted Communication device, an aircraft, an airplane, an unmanned aerial vehicle, a remote control plane, and other wireless Communication devices. The second type of communication node, base station or network side device in this application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a Transmission and Reception node TRP (Transmission and Reception Point), a relay satellite, a satellite base station, an air base station, and other wireless communication devices.

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

Claims

1. A first node configured for wireless communication, comprising:

2. The first node of claim 1, wherein the first logical channel is mapped to the second logical channel;

wherein the first logical channel and the second logical channel are both associated to the first radio bearer.

3. The first node of claim 1 or 2, wherein the priority of the first packet is used to determine the priority of the first candidate channel; the priority of the second packet is used to determine the priority of the second candidate channel.

4. The first node of any of claims 1-3, wherein the priority of the first packet is determined by a priority of the first logical channel; the priority of the second packet is determined by a priority of the second logical channel;

5. The first node according to any of claims 1 to 4, wherein the first candidate channel comprises at least one first time unit in time domain; the second candidate channel comprises at least one second time unit in the time domain; a length of the first time unit is related to a subcarrier spacing of the first candidate channel; the length of the second time unit is related to the subcarrier spacing of the second candidate channel.

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

7. The first node of claim 6, wherein the first logical channel is mapped to the second logical channel;

8. The first node of claim 6 or 7, wherein the priority of the first packet is used to determine the priority of the first candidate channel; the priority of the second packet is used to determine the priority of the second candidate channel.

9. The first node according to any of claims 6 to 8, wherein the priority of the first data packet is determined by a priority of the first logical channel; the priority of the second packet is determined by a priority of the second logical channel;

wherein the priority of the first logical channel and the priority of the second logical channel are the same or the priority of the first logical channel and the priority of the second logical channel are different.

10. The first node according to any of claims 6 to 9, wherein the first candidate channel comprises at least one first time unit in time domain; the second candidate channel comprises at least one second time unit in the time domain; a length of the first time unit is related to a subcarrier spacing of the first candidate channel; the length of the second time unit is related to the subcarrier spacing of the second candidate channel.