CN113382351B

CN113382351B - Method and device for relaying wireless communication

Info

Publication number: CN113382351B
Application number: CN202010129422.4A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-02-25
Filing date: 2020-02-28
Publication date: 2022-09-27
Anticipated expiration: 2040-02-28
Also published as: CN113382351A

Abstract

A method and apparatus for relaying wireless communications is disclosed. A first node receives first signaling, wherein the first signaling indicates first position information and a first communication range; determining a second communication range according to the first position information and the first communication range; when the second communication range is larger than a first threshold value, sending a second signaling, wherein the second signaling indicates second position information and the second communication range; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero. Receiving first information indicating the second location information; determining a first distance according to the first position information and the second position information; wherein the second communication range is determined by a difference of the first communication range minus the first distance. According to the method and the device, under the condition that the transmitting power is limited, the communication range can be expanded through forwarding of the first node.

Description

Method and device for relaying wireless communication

Technical Field

The present application relates to methods and apparatus in wireless communication systems, and more particularly, to methods and apparatus for supporting relay transmission in sidelink wireless communication.

Background

Relay (Relay) is a multi-hop transmission technology, which can improve the cell edge throughput and improve the cell coverage. Taking Sidelink (Sidelink) SL transmission in an LTE (Long Term Evolution) system as an example, transmission from a User Equipment (User Equipment) UE to a Relay Node (RN) is Sidelink air interface technology transmission, and transmission from the RN to a base station (eNodeB) eNB is LTE air interface technology transmission. 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), and IP Layer forwarding causes a problem of relatively large IP header overhead.

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on NR (New Radio over the air) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization of NR is started over WI (Work Item) that has passed NR over 3GPP RAN #75 sessions. The 3GPP also started standards development and research work under the NR framework for the V2X (Vehicle-to-Internet of vehicles) service, which was developed explosively. The decision to initiate SI (Study Item) standardization work for NR SL Relay was decided on 3GPP RAN #86 at the second confliction.

Disclosure of Invention

The inventor finds through research that some business and application scenarios of V2X put forward communication range (communication range) requirements. For the requirement, the multicast transmission of V2X specially designs HARQ (Hybrid Automatic Repeat reQuest) transmission based on NACK (negative-acknowledgement) -only feedback, that is, if the UE in the communication range does not receive successfully, NACK is fed back, and if the reception is successful, no feedback is made; the UE out of the communication range does not perform HARQ feedback regardless of successful reception. Due to the fact that the electric quantity of the UE is insufficient or the UE is limited by interference to the base station, the transmission power for transmitting the actual wireless signal of the UE may not necessarily meet the requirement of the communication range, and may not meet the service requirement.

In view of the above, the present application discloses a solution. It should be noted that, in the description of the present application, only the NR V2X scenario is taken as a typical application scenario or example; the application is also applicable to other scenarios (such as relay networks, D2D (Device-to-Device) networks, cellular networks, scenarios supporting half-duplex user equipment) besides NR V2X, which face similar problems, and can also achieve technical effects similar to those in NR V2X scenarios. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to NR V2X scenarios, downstream communication scenarios, etc.) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to any other node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. In 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:

receiving first signaling, wherein the first signaling indicates first position information and a first communication range; determining a second communication range according to the first position information and the first communication range;

when the second communication range is larger than a first threshold value, sending a second signaling, wherein the second signaling indicates second position information and the second communication range;

wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero.

As an embodiment, the first location information and the second location information each include a part or all of bits of a zone identifier (zone ID), and the zone ID indicates a geographical zone.

As an example, the geographical area is determined by an area length and an area width.

As a sub-embodiment of the above embodiment, the region length and the region width are configured by RRC signaling.

As one example, the zone ID is determined by the total number of zones.

As a sub-embodiment of the above embodiment, the total number of regions is configured by RRC signaling.

As an example, the zone ID may be determined according to the formula in section 5.10.13.2 of the 3GPP standard 36.331 protocol.

As an embodiment, the zone and the zone ID are used for determination of the user's location in SL communications.

As an embodiment, the first location information and the second location information respectively include a part or all of coordinate information.

As an embodiment, the second communication range is smaller than the first communication range, so that the communication range of the second signaling is smaller than the communication range of the first signaling, and the second signaling is forwarded by the first node under the condition that the transmission power is limited, thereby improving the possibility of meeting the requirement of the communication range and meeting the transmission requirement of the service with the requirement of the communication range.

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

receiving first information indicating the second location information; determining a first distance according to the first position information and the second position information;

wherein the second communication range is determined by a difference of the first communication range minus the first distance.

As an embodiment, the first distance between the sender sending the first signaling and the first node may be obtained through the first location information and the second location information indicated by the first signaling, and thus, the communication range requirement of the second signaling may be obtained, where the second communication range is smaller than the first communication range, and in a case where transmission power is limited, the possibility of meeting the communication range requirement may be improved.

receiving a first wireless signal, and recovering a first bit block according to the first wireless signal;

transmitting a second wireless signal;

wherein the first block of bits is used to generate the second wireless signal; the first signaling comprises configuration information of the first wireless signal; the second signaling includes configuration information of the second wireless signal.

receiving second information indicating a maximum transmission power;

transmitting the second signaling with a first transmission power;

wherein the first transmit power is not greater than the maximum transmit power.

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

transmitting the second wireless signal at a second transmit power;

wherein the second transmit power is not greater than the maximum transmit power.

determining a third transmitting power for sending the second signaling according to the downlink path loss of the first node;

wherein the first transmit power is the lesser of the third transmit power and the maximum transmit power.

determining fourth transmitting power for transmitting the second wireless signal according to the downlink path loss of the first node;

wherein the second transmit power is the lesser of the fourth transmit power and the maximum transmit power.

transmitting a Negative Acknowledgement (NACK) when the received first wireless signal is a first transmission of the first bit block and the first wireless signal is not successfully received.

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

sending a first signaling, wherein the first signaling indicates first position information and a first communication range; the first location information and the first communication range are used to determine a second communication range;

wherein the second communication range is used to determine whether to transmit a second signaling indicating second location information and the second communication range.

the first and second location information are used to determine a first distance;

transmitting a first wireless signal;

wherein a first block of bits is used to generate the first wireless signal, the first signaling including configuration information of the first wireless signal; the first bit block is used to generate the second wireless signal, the second signaling including configuration information of the second wireless signal.

a first transmit power is used to transmit the second signaling;

wherein the first transmit power is not greater than a maximum transmit power, the maximum transmit power being used to indicate a maximum allowed transmit power.

a second transmit power is used to transmit the second wireless signal;

the downlink path loss is used for determining a third transmitting power for transmitting the second signaling;

the downlink loss is used for determining fourth transmission power for transmitting the second wireless signal;

monitoring for a Negative Acknowledgement (NACK) when the transmitted first wireless signal is a first transmission of the first bit block.

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

a first receiver that receives a first signaling indicating first location information and a first communication range; determining a second communication range according to the first position information and the first communication range;

a first transmitter configured to transmit a second signaling indicating second location information and the second communication range when the second communication range is greater than a first threshold;

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

a third transmitter that transmits a first signaling indicating first location information and a first communication range; the first location information and the first communication range are used to determine a second communication range;

As an example, the method in the present application has the following advantages:

by adopting the method in the application, the sending UE can serve as a relay node by sending the location information and the communication range information, so that the receiving UE can forward the information successfully received, the communication range is increased under the condition that the UE transmission power is limited, and the transmission requirement of the service with the communication range requirement is met.

The method of the application can reduce the UE transmitting power when meeting the communication range requirement, and achieves the advantage of saving power.

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 shows a flow diagram of first signaling, first location information, first communication range, second communication range and second signaling according to an embodiment of the application;

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

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

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

FIG. 5 shows a schematic diagram of a first node and a network node according to the present application;

FIG. 6 shows a wireless signal transmission flow diagram according to one embodiment of the present application;

FIG. 7 illustrates a schematic diagram of the structure of the first location information and the first communication range in the second-order SCI according to one embodiment of the present application;

fig. 8 shows a schematic time-frequency resource diagram of a second signaling and a second radio signal according to an embodiment of the application;

FIG. 9 shows a block diagram of a processing device in a first node according to an embodiment of the application;

FIG. 10 shows a block diagram of a processing device in a first node according to an embodiment of the application;

fig. 11 shows a block diagram of a processing arrangement in a second node according to an embodiment of the 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 flowchart of first signaling, first location information, a first communication range, a second communication range and second signaling according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step, and it is particularly emphasized that the sequence of the blocks in the figure does not represent a chronological relationship between the represented steps.

In embodiment 1, a first node 100 in the present application receives a first signaling indicating first location information and a first communication range in step 101; determining a second communication range according to the first position information and the first communication range in step three 102; in step 103, when the second communication range is greater than the first threshold, a second signaling is sent, where the second signaling indicates second location information and the second communication range.

As an embodiment, the first signaling is sent by the second node to the first node in this application.

As an embodiment, the second signaling is sent by the first node to a node other than the second node in this application.

As an embodiment, the first signaling is downlink signaling.

As an embodiment, the first signaling and the second signaling are sidelink signaling respectively.

As an embodiment, the first signaling and the second signaling are physical layer signaling respectively.

As an embodiment, formats of the first signaling and the second signaling are SCI (Sidelink Control Information) format (format)0, respectively.

As an embodiment, the formats of the first signaling and the second signaling are SCI format 1, respectively.

As an embodiment, the first signaling and the second signaling are respectively transmitted on a PC5 interface.

As an embodiment, the first signaling and the second signaling are transmitted at SL, respectively.

As an embodiment, the first signaling and the second signaling may each include one SCI.

As a sub-embodiment of the above embodiment, the SCI is transmitted on a PSCCH (Physical Sidelink Control CHannel) CHannel.

As an embodiment, when the SCI includes a 2-stage (2-stage) SCI, the first signaling and the second signaling each include a second-stage (2nd stage) SCI.

As a sub-embodiment of the foregoing embodiment, the second signaling occupies a part of resources of a psch (Physical Sidelink Shared CHannel) CHannel for transmission.

As an embodiment, the first communication range belongs to a first communication range set, the first communication range set includes K communication ranges, and K is a positive integer; wherein each communication range of the first set of communication ranges may be defined by

A communication range index indication of one bit, wherein

Indicating a ceiling operation.

As a sub-embodiment of the foregoing embodiment, the K communication ranges in the first communication range set correspond to the K communication range indexes one to one.

As an embodiment, the first communication range is one of K communication ranges in the first set of communication ranges.

As an example, the phrase above, the first signaling indicates that the first communication range includes: the first signaling includes a first communication range index indicating the first communication range.

As an embodiment, the second communication range belongs to a second communication range set, the second communication range set includes L communication ranges, and L is a positive integer; wherein each communication range of the second set of communication ranges may be represented by

A communication range index indication of one bit, wherein

Indicating a ceiling operation.

As a sub-embodiment of the foregoing embodiment, L communication ranges in the second communication range set correspond to L communication range indexes one to one.

As an embodiment, the second communication range is one of L communication ranges in the second communication range set.

As an example, the phrase above, the second signaling indicates that the second communication range includes: the second signaling includes a second communication range index indicating the second communication range.

For one embodiment, the first set of communication ranges and the second set of communication ranges may be the same.

As an embodiment, the first set of communication ranges and the second set of communication ranges intersect partially.

As an embodiment, the first set of communication ranges and the second set of communication ranges do not intersect.

As an embodiment, the first set of communication ranges is a subset of the second set of communication ranges.

As an embodiment, the second set of communication ranges is a subset of the first set of communication ranges.

As an embodiment, the first set of communication ranges and the second set of communication ranges are each preconfigured.

As an embodiment, the first set of communication ranges and the second set of communication ranges are configured by third information, respectively.

As a sub-embodiment of the foregoing embodiment, the third information is downlink RRC (Radio Resource Control) layer signaling.

As a sub-embodiment of the above embodiment, the third information is a secondary link RRC layer signaling.

As a sub-embodiment of the foregoing embodiment, the third Information includes all or part of an IE (Information Element) in an RRC signaling.

As a sub-embodiment of the above embodiment, the third information includes all or part of a Field (Field) in one of RRC signaling.

As a sub-embodiment of the above-mentioned embodiment, the third Information includes all or part of IE in SIB (System Information Block) Information.

As a sub-embodiment of the foregoing embodiment, the third information includes all or part of fields in an IE in one SIB information.

As a sub-embodiment of the above embodiment, the third information is a group-UE-specific (UE group-specific) information.

As a sub-embodiment of the foregoing embodiment, the third information is transmitted through a DL-SCH (Downlink Shared Channel).

As a sub-embodiment of the foregoing embodiment, the third information is transmitted through a PDSCH (Physical Downlink Shared Channel).

As a sub-embodiment of the above embodiment, the third information is transmitted through a SL-SCH (Sidelink Shared Channel).

As a sub-embodiment of the above embodiment, the third information is transmitted via a psch.

As a sub-embodiment of the above embodiment, the first threshold is indicated by the third information.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 of NR 5G, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The NR 5G or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server), Home Subscriber Server)/UDM (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (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/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 land vehicle, an automobile, a vehicle mounted device, a vehicle mounted 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 an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are 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 the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS (Packet Switching) streaming service.

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

As an embodiment, the UE201 supports transmission in SL.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports internet of vehicles.

As an embodiment, the UE201 supports V2X service.

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

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

As one example, the gNB203 supports internet of vehicles.

As an embodiment, the gNB203 supports V2X traffic.

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 radio link from the UE201 to the gNB203 is an uplink.

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

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

As an embodiment, the UE201 supports Relay transmission.

As an embodiment, the UE241 supports Relay transmission.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) or the control plane 300 between two UEs in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handoff support for the first node to the second node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC 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 second node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS (Quality of Service) streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first node may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Example 4

Embodiment 4 shows a schematic diagram of a first node and a second node according to the application, as shown in fig. 4.

A controller/processor 490, a receive processor 452, a transmit processor 455, a transmitter/receiver 456, a data source/memory 480, and a transmitter/receiver 456 may be included in the first node (450) including an antenna 460.

A controller/processor 440, a receive processor 412, a transmit processor 415, a transmitter/receiver 416, a memory 430, the transmitter/receiver 416 including an antenna 420 may be included in the second node (400).

In transmissions from the second node 400 to the first node 450, at the second node 400, upper layer packets are provided to a controller/processor 440. Controller/processor 440 performs the functions of layer L2 and above. In transmission from the second node 400 to the first node 450, the controller/processor 440 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first node 450 based on various priority metrics. The controller/processor 440 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first node 450. Transmit processor 415 performs various signal processing functions for the L1 layer (i.e., the physical layer), including encoding, interleaving, scrambling, modulation, power control/allocation, precoding, and physical layer control signaling generation, etc., with the generated modulation symbols divided into parallel streams and each stream mapped to a respective multi-carrier subcarrier and/or multi-carrier symbol and then transmitted as a radio frequency signal by transmit processor 415 via transmitter 416 to antenna 420.

In transmissions from the second node 400 to the first node 450, at the first node 450 each receiver 456 receives a radio frequency signal through its respective antenna 460, each receiver 456 recovers baseband information modulated onto a radio frequency carrier, and provides the baseband information to a receive processor 452. The receive processor 452 implements various signal receive processing functions of the L1 layer. The signal reception processing functions include reception of physical layer signals, demodulation based on various modulation schemes (e.g., BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying)) by means of multicarrier symbols in a multicarrier symbol stream, followed by descrambling, decoding, and deinterleaving to recover data or control transmitted by the second node 410 on a physical channel, followed by providing the data and control signals to the controller/processor 490. The controller/processor 490 is responsible for the functions of the L2 layer and beyond. The controller/processor can be associated with a memory 480 that stores program codes and data. The data source/memory 480 may be referred to as a computer-readable medium.

In a transmission from the first node 450 to the second node 400, at the first node 450, a data source/memory 480 is used to provide higher layer data to a controller/processor 490. The data source/memory 480 represents all protocol layers above the L2 layer and the L2 layer. The controller/processor 490 implements the L2 layer protocol for the user plane and the control plane by providing header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the second node 410. The controller/processor 490 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second node 410. The transmit processor 455 implements various signal transmit processing functions for the L1 layer (i.e., the physical layer). The signal transmission processing functions include coding and interleaving to facilitate Forward Error Correction (FEC) at the UE450 and modulation of the baseband signals based on various modulation schemes (e.g., BPSK, QPSK), splitting the modulation symbols into parallel streams and mapping each stream to a respective multi-carrier subcarrier and/or multi-carrier symbol, which are then mapped by a transmit processor 455 via a transmitter 456 to an antenna 460 for transmission as radio frequency signals.

In a transmission from the first node 450 to the second node 400, at the second node 400, receivers 416 receive radio frequency signals through their respective antennas 420, each receiver 416 recovers baseband information modulated onto a radio frequency carrier, and provides the baseband information to a receive processor 412. The receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., the physical layer), including obtaining a multicarrier symbol stream, then demodulating the multicarrier symbols in the multicarrier symbol stream based on various modulation schemes (e.g., BPSK, QPSK), followed by decoding and deinterleaving to recover the data and/or control signals originally transmitted by the first node 450 over the physical channel. The data and/or control signals are then provided to the controller/processor 440. The functions of the L2 layer are implemented at the controller/processor 440. The controller/processor 440 can be associated with a memory 430 that stores program codes and data. The memory 430 may be a computer-readable medium.

For one embodiment, the first node 450 apparatus comprises: 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 node 450 apparatus at least: receiving first signaling, wherein the first signaling indicates first position information and a first communication range; determining a second communication range according to the first position information and the first communication range; when the second communication range is larger than a first threshold value, sending a second signaling, wherein the second signaling indicates second position information and the second communication range; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero.

For one embodiment, the first node 450 apparatus comprises: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving first signaling, wherein the first signaling indicates first position information and a first communication range; determining a second communication range according to the first position information and the first communication range; when the second communication range is larger than a first threshold value, sending a second signaling, wherein the second signaling indicates second position information and the second communication range; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero.

As an embodiment, the second node 400 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 node 400 means at least: transmitting a first signaling, wherein the first signaling indicates first position information and a first communication range; the first location information and the first communication range are used to determine a second communication range; wherein the second communication range is used to determine whether to transmit a second signaling indicating second location information and the second communication range.

As an embodiment, the second node 400 comprises: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling, wherein the first signaling indicates first position information and a first communication range; the first location information and the first communication range are used to determine a second communication range; wherein the second communication range is used to determine whether to transmit a second signaling indicating second location information and the second communication range.

As an embodiment, the first node 450 is a UE.

As an example, the first node 450 is a user equipment supporting V2X.

As an example, the first node 450 is a user equipment supporting D2D.

As an example, the first node 450 is a vehicle-mounted device.

For one embodiment, the first node 450 is an RSU.

As an embodiment, the second node 400 is a base station device supporting V2X.

As an embodiment, the second node 400 is a UE.

As an example, the second node 400 is a user equipment supporting V2X.

As an embodiment, the first node 400 is a user equipment supporting D2D

As an example, the second node 400 is a vehicle-mounted device.

For one embodiment, the second node 400 is an RSU device.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used for receiving the first signaling and the first wireless signal in this application.

For one embodiment, a transmitter 416 (including an antenna 420), a transmit processor 415, and a controller/processor 440 are used to transmit the first signaling and the first wireless signal in this application.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the second signaling, the second wireless signal, and the negative acknowledgement in this application.

For one embodiment, the receiver 416 (including the antenna 420), the receive processor 412, and the controller/processor 440 are used to monitor the negative acknowledgements described herein.

Example 5

Embodiment 5 shows a schematic diagram of a first node and a network node according to the present application, as shown in fig. 5.

In the first node (550) there are included a controller/processor 590, a memory 580, a receive processor 552, a transmitter/receiver 556, a transmit processor 555, the transmitter/receiver 556 including an antenna 560.

In a network node (500) comprising a controller/processor 540, a memory 530, a receive processor 512, a transmitter/receiver 516, a transmit processor 515, a transmitter/receiver 516 comprising an antenna 520

In downstream transmission from the network node 500 to the first node 550, upper layer packets are provided to the controller/processor 590 and the controller/processor 590 implements the functionality of layer L2. In the downlink transmission, the controller/processor 590 provides packet header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels. Controller/processor 590 is also responsible for HARQ operations (if supported), retransmission, and signaling to user equipment 500. Transmit processor 555 performs various signal processing functions for the L1 layer (i.e., the physical layer), including encoding, interleaving, scrambling, modulation, power control/allocation, precoding, and physical layer control signaling generation, etc., with the modulation symbols divided into parallel streams and each stream mapped to a corresponding multi-carrier subcarrier and/or multi-carrier symbol and then transmitted as a radio frequency signal by transmit processor 555 via transmitter 556 and to antenna 560. On the first node receiving end, each receiver 516 receives a radio frequency signal through its respective antenna 520, each receiver 516 recovers baseband information modulated onto a radio frequency carrier, and provides the baseband information to receive processor 512. The receive processor 512 performs various signal receive processing functions of the L1 layer. The signal reception processing functions include reception of physical layer signals and the like through multicarrier symbols in a multicarrier symbol stream through various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK)), demodulation followed by descrambling, decoding, and deinterleaving to recover data or control transmitted by network node 550 over a physical channel, the data and control signals then provided to controller/processor 540. Controller/processor 540 performs L2 level processing to interpret the higher level information. The controller/processor can be associated with a memory 530 that stores program codes and data. Memory 530 may be referred to as a computer-readable medium.

For one embodiment, transmitter 516 (including antenna 520), transmit processor 515, and controller/processor 540 are used to transmit the second information and the third information in this application.

For one embodiment, receiver 556 (including antenna 560), receive processor 552, and controller/processor 590 are configured to receive the second and third information described herein.

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

Example 6

Embodiment 6 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 6. In fig. 6, the second node U1 and the first node U2 communicate over a sidelink, and the network node and the first node U2 communicate over a downlink. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application. In fig. 6, the step in block F0 is optional.

For theSecond node U1In step S11, a first signaling is sent, in step S12, a first wireless signal is sent, and in step S13, when the first wireless signal is sent as a first transmission with a first bit rate, a negative acknowledgement is monitored.

For theFirst node U2Second information is received in step S21, third information is received in step S22, first signaling is received in step S23, first wireless signals are received in step S24, first information is received in step S25, a second communication range is determined in step S26, first and second transmission powers are determined when the second communication range is greater than a first threshold in S27, second signaling and second wireless signals are transmitted, and the first wireless signals are not transmitted for the first time of the first bit block in step S28And if the receiving is successful, sending a negative response.

For theNetwork node N3The second information is transmitted in step S31, and the third information is transmitted in step S32.

In embodiment 6, first signaling indicating first location information and a first communication range is received; determining a second communication range according to the first position information and the first communication range; when the second communication range is larger than a first threshold value, sending a second signaling, wherein the second signaling indicates second position information and the second communication range; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero; receiving first information indicating the second location information; determining a first distance according to the first position information and the second position information; wherein the second communication range is determined by a difference of the first communication range minus the first distance; receiving a first wireless signal, and recovering a first bit block according to the first wireless signal; transmitting a second wireless signal; wherein the first block of bits is used to generate the second wireless signal; the first signaling comprises configuration information of the first wireless signal; the second signaling comprises configuration information of the second wireless signal; receiving second information indicating a maximum transmission power; transmitting the second signaling with a first transmission power; wherein the first transmit power is not greater than the maximum transmit power; transmitting the second wireless signal at a second transmit power; wherein the second transmit power is not greater than the maximum transmit power; determining a third transmitting power for sending the second signaling according to the downlink path loss of the first node; wherein the first transmit power is the lesser of the third transmit power and the maximum transmit power; determining fourth transmitting power for transmitting the second wireless signal according to the downlink path loss of the first node; wherein the second transmit power is the lesser of the fourth transmit power and the maximum transmit power; transmitting a Negative Acknowledgement (NACK) when the received first wireless signal is a first transmission of the first bit block and the first wireless signal is not successfully received.

As an embodiment, the first node U2 and the second node U1 are each a UE.

For one embodiment, the network node N3 is a base station.

As one embodiment, the first node U2 receives the second information sent by the network node N3, the second information indicating the maximum transmit power.

For one embodiment, the second information includes P _cmax (configured maximum user output power), the P _cmax The maximum transmission power of the first node is the configured maximum output power and is marked as P _max Is set to be P _cmax 。

For one embodiment, the second information includes P _{MAX_CBR} (maximum UE output Power based on CBR), the P _{MAX_CBR} For configured maximum output power based on CBR (Channel Busy Ratio), the P _{MAX_CBR} Related to the priority and CBR of the first wireless signal.

As a sub-embodiment of the foregoing embodiment, the maximum transmission power of the first node is P _cmax And P _{MAX_CBR} The smaller of the two, i.e. P _max ＝min(P _cmax ,P _{MAX_CBR} ) And min (.) is the minimum value operation.

As an embodiment, the second information is higher layer information.

As an embodiment, the second information is transmitted internally in the first node.

For one embodiment, the second information is passed from a higher layer of the first node to a physical layer of the first node.

As an embodiment, the second information is Configured (Configured).

As an embodiment, the second information is Pre-configured (Pre-configured).

As an embodiment, the second information is downlink signaling.

As an embodiment, the second information is downlink RRC layer signaling.

As an embodiment, the second information includes all or part of IE in an RRC signaling.

As an embodiment, the second information includes all or part of a field in one RRC signaling.

As an embodiment, the second information includes all or part of IEs in one SIB information.

As an embodiment, the second information includes all or part of fields in an IE in one SIB information.

As an embodiment, the second information is Cell Specific.

As an embodiment, the second information is a zone-specific (zone-specific) information, and the zone is determined by location information of the UE.

As an embodiment, the second information is a group-specific (UE group-specific) information.

As an embodiment, the second information is UE-specific (UE-specific) information.

In one embodiment, the second information is transmitted via a DL-SCH.

As an embodiment, the second information is transmitted through one PDSCH.

As an embodiment, the second information is Broadcast (Broadcast).

As an embodiment, the second information is Unicast (Unicast).

As an embodiment, the second information is multicast (Groupcast).

As an embodiment, the first node U2 receives the first signaling and the first wireless signal sent by the second node U1, the first signaling indicating the first location information and the first communication range.

As one embodiment, the first wireless signal and the second wireless signal are each transmitted on a psch.

As one embodiment, the first wireless signal and the second wireless signal are each transmitted over an air interface.

As an embodiment, the first wireless signal and the second wireless signal are respectively transmitted through a wireless interface.

As an embodiment, the first wireless signal and the second wireless signal are respectively transmitted through a PC5 interface.

As an embodiment, the first wireless signal and the second wireless signal are transmitted through SL, respectively.

As one embodiment, the phrase recovering a first bit block from the first wireless signal comprises: decoding the first wireless signal to obtain the first bit block.

As one embodiment, the phrase recovering a first bit block from the first wireless signal comprises: decoding the first wireless signal to obtain an information bit block, and judging that the first wireless signal is successfully received when the first wireless signal passes through Cyclic Redundancy Check (CRC) verification, wherein the information bit block is the first bit block.

As one embodiment, the phrase that the first signaling includes configuration information of the first wireless signal includes: the first signaling includes at least one of HARQ process ID (HARQ process number), NDI (New Data Indicator), HARQ-ACK resource (HARQ-ACK resource), redundancy version, and the first signaling does not include an indication of time-frequency resources occupied by the first radio signal.

In one embodiment, the first node receives a third signaling indicating time-frequency resource information occupied by the first wireless signal.

As a sub-embodiment of the two above-mentioned embodiments, the first signaling and the third signaling are used together for scheduling of the first wireless signal.

As one embodiment, the phrase that the first signaling includes configuration information of the first wireless signal includes: the first signaling includes scheduling information of the first wireless signal.

As one embodiment, the phrase that the second signaling includes configuration information of the second wireless signal includes: the second signaling includes at least one of HARQ process ID, NDI, HARQ-ACK resource, redundancy version, and the second signaling does not include an indication of time-frequency resources occupied by the second wireless signal.

As an embodiment, the first node sends a fourth signaling, where the fourth signaling indicates time-frequency resource information occupied by the second wireless signal.

As a sub-embodiment of the two above-mentioned embodiments, the second signaling and the fourth signaling are used together for scheduling of the second radio signal.

As a sub-embodiment of the two embodiments, the time-frequency Resource occupied by the second wireless signal includes multiple REs (Resource elements).

As a sub-embodiment of the above two embodiments, the time-frequency resource occupied by the second radio signal includes one or more multicarrier symbols.

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

As an embodiment, the multicarrier symbol is an SC-FDMA (Single-carrier Frequency-Division Multiple Access) symbol.

As an embodiment, the Multicarrier symbols are FBMC (Filterbank Multicarrier) symbols.

As one embodiment, the phrase that the second signaling includes configuration information of the second wireless signal includes: the second signaling includes scheduling information for the second wireless signal.

As an embodiment, the first node U2 sends the second signaling and the second wireless signal, and the destination receiver of the second signaling and the second wireless signal is a receiver other than the second node in this application.

As an embodiment, all or a portion of the bits of the SCI are used to generate the second signaling.

As an embodiment, all or a part of the bits of the second-level SCI are used to generate the second signaling.

As an embodiment, all or part of the bits of the second order SCI are used together with a reference signal to generate the second signaling.

As an embodiment, all bits or a part of bits in the payload (payload) of the second-order SCI are sequentially subjected to CRC Calculation (CRC Calculation), Channel Coding (Channel Coding), Rate Matching (Rate Matching), Scrambling (Scrambling), Modulation (Modulation), Mapping to Physical Resources (Mapping to Physical Resources), OFDM Baseband Signal Generation (OFDM base and Signal Generation), and Modulation and Up conversion (Modulation and Up conversion) to obtain the second signaling.

As one embodiment, all or a portion of the first bit block is used to generate the second wireless signal.

As an embodiment, all or part of the first bit block is used together with a reference signal to generate the second wireless signal.

As an embodiment, all bits or a part of bits in the first bit block sequentially undergo CRC Calculation (CRC Calculation), Channel Coding (Channel Coding), Rate matching (Rate matching), Scrambling (Scrambling), Modulation (Modulation), Layer Mapping (Layer Mapping), Antenna Port Mapping (Antenna Port Mapping), Mapping to Virtual Resource Blocks (Mapping to Virtual Resource Blocks), Mapping from Virtual Resource Blocks to Physical Resource Blocks (Mapping to Physical Resource Blocks), OFDM Baseband Signal Generation (OFDM Baseband Signal Generation), and Modulation Up-conversion (Modulation Up conversion) to obtain the second wireless Signal.

As an embodiment, all bits or a part of bits in a payload (payload) of an SCI are sequentially subjected to CRC Calculation (CRC Calculation), Channel Coding (Channel Coding), Rate Matching (Rate Matching), Scrambling (Scrambling), Modulation (Modulation), Mapping to Physical Resources (Mapping to Physical Resources), OFDM Baseband Signal Generation (OFDM Baseband and Signal Generation), and Modulation and Up conversion (Modulation and Up conversion) to obtain the second radio Signal.

As an example, the first bit block is transmitted on the SL-SCH.

As an embodiment, the first information is higher layer information.

As an embodiment, the first information is transmitted internally in the first node.

For one embodiment, the first information is passed from a higher layer of the first node to a physical layer of the first node.

As one embodiment, the first information includes coordinate information of a geographic location of the first node.

As one embodiment, the first location information indicates a geographic location of the second node.

As one embodiment, the second location information indicates a geographic location of the first node.

As an embodiment, the first distance is a distance between the first node and the second node obtained from the first location information and the second location information.

As a sub-embodiment of the embodiment, when the first position information and the second position information indicate coordinates, the first distance is

Wherein the (x1, y1) is part or all of the information of the geographic position coordinates of the second node, and the (x2, y2) is part or all of the information of the geographic position coordinates of the first node.

As a sub-embodiment of the above-mentioned embodiment, when the first position information and the second position information indicate zone ID, the first distance is

Wherein the (x1, y1) is partial or all information of the coordinates of the central geographical position of the zone where the second node is located, and the (x2, y2) is partial or all information of the coordinates of the central geographical position of the zone where the first node is located.

Wherein the (x1, y1) is part or all of information of coordinates of a center geographical position of a zone closest to the first node as indicated by a zone ID, and the (x2, y2) is part or all of information of the geographical position coordinates of the first node used to determine the zone ID of the first node.

As an embodiment, when the first location information and the second location information indicate a zone ID, the first distance is

Wherein the (x1, y1) is part or all of information for coordinates of a geographical location of a zone closest to the first node as indicated by a zone ID, the (x2, y2) is part or all of information for the geographical location coordinates of the first node used to determine the zone ID of the first node; the one geographical position of the zone closest to the first node indicated by the zone ID is the one geographical position satisfying the shortest geographical distance to the first node.

As one embodiment, the phrase the second communication range being determined by the difference of the first communication range minus the first distance comprises: and subtracting the first distance from the first communication range to obtain a residual communication range Z, and determining the second communication range according to the residual communication range Z.

As a sub-embodiment of the foregoing embodiment, the second communication range takes the value of the remaining communication range Z.

As a sub-embodiment of the foregoing embodiment, when the value of Z satisfies that X < Z ≦ Y, the value of the second communication range is Y, where X and Y are two values in the second communication range set, respectively.

As a sub-embodiment of the foregoing embodiment, when the value of Z satisfies that X is not less than Z and is less than Y, the value of the second communication range is X, where X and Y are two values in the second communication range set, respectively.

As a sub-embodiment of the above embodiment, when the value of Z satisfies X < Z < Y and | Z-X | > | Y-Z |, where | - | is an absolute value operation, the second communication range takes on a value of Y, where X and Y are two values in the second set of communication ranges, respectively.

As a sub-embodiment of the above embodiment, when the value of Z satisfies X < Z < Y and | Z-X | < | Y-Z |, where | -is absolute value operation, the second communication range takes on value X, where X and Y are two values in the second set of communication ranges, respectively.

As a sub-embodiment of the above embodiment, when the value of Z satisfies X < Z < Y and | Z-X | ═ Y-Z |, where |. | is an absolute value operation, the second communication range takes a value of Y, where X and Y are two values in the second set of communication ranges, respectively.

As a sub-embodiment of the above embodiment, when the value of Z satisfies X < Z < Y and | Z-X | ═ Y-Z |, where |. | is an absolute value operation, the second communication range takes on the value of X, where X and Y are two values in the second set of communication ranges, respectively.

As a sub-embodiment of the foregoing embodiment, when the value of Z satisfies both Z < X and Z is greater than or equal to the first threshold, where the second communication range takes on a value of X, where X is a minimum value in the second communication range set.

As a sub-embodiment of the foregoing embodiment, when the value of Z satisfies that Z > Y, the value of the second communication range is Y, where Y is a maximum value in the second communication range set.

As an embodiment, when the second communication range is smaller than the first threshold, the sending of the second signaling is abandoned.

As an embodiment, a PSD (Power Spectrum Density) of the first transmit Power is the same as a PSD of the second transmit Power, the PSD being a transmit Power on each RE.

As an embodiment, the transmit power on each RE occupied by the second signaling and the transmit power of each RE occupied by the second wireless signal are the same.

As one embodiment, the PSD of the first transmit power is Q times the PSD of the second transmit power, the Q being a preconfigured value.

As an embodiment, the transmit power on each RE occupied by the second signaling is Q times the transmit power of each RE occupied by the second wireless signal, the Q being a pre-configured value.

For one embodiment, the PSD of the first transmit power is 2 times the PSD of the second transmit power.

As an embodiment, the transmit power on each RE occupied by the second signaling is 2 times the transmit power of each RE occupied by the second wireless signal.

As an embodiment, the first transmission power is denoted as P _{1_C} Is the maximum transmit power of the first node, i.e. P _{1_C} ＝P _max 。

As an embodiment, the second transmission power is denoted as P _{2_D} Is the maximum transmit power of the first node, i.e. P _{2_D} ＝P _max 。

As an embodiment, the first node estimates the downlink path loss PL according to a measured Reference Signal Received Power (Reference Signal Received Power) RSRP of a Reference Signal transmitted by the base station _D (Downlink path loss), wherein the base station is a serving base station of the first node.

As a sub-embodiment of the above-mentioned embodiment, the Reference Signal is a downlink CSI-RS (Channel State Information-Reference Signal).

As a sub-embodiment of the above embodiment, the reference Signal is a downlink SS (Synchronization Signal).

As a sub-embodiment of the above embodiment, the Reference Signal is a downlink CRS (Common Reference Signal).

As an embodiment, the third transmission power is denoted as P _{3_C} This can be calculated P in section 16.2 of the 38.213 protocol of 3GPP _PSCCH,D Is determined by the formula of (A), said P _{3_C} And a frequency domain bandwidth of the second signaling.

As an embodiment, the third transmit power is the same as the PSD of the first transmit power and the PSD of the second transmit power

Wherein, the P _O,D And said alpha _D Indicated by the second information, the

The number of RBs (Resource Block) of the frequency domain resources occupied for the second signaling, mu is related to SCS (SubCarrier Spacing) of the PSCCH, i is the slot number sent, log ₁₀ (.) is a base-10 logarithmic operation, and dBm (decibel relative to one milliwatt) is the unit of transmit power.

For one embodiment, the third transmit power P is greater than the second transmit power when the PSD of the first transmit power is 2 times the PSD of the second transmit power _{3_C} Can be represented by the formula

Determination of the above

The number of RBs of the frequency domain resource occupied by the second signaling.

As an example, the fourth transmission power P _{4_D} Can be calculated by the calculation P in section 16.2 of the 38.213 protocol of 3GPP _PSSCH,D Is determined by the formula (I), i.e.

Wherein, the

A number of RBs of a frequency domain resource occupied for the second radio signal.

As one embodiment, the phrase that the first transmit power is the lesser of the third transmit power and the maximum transmit power includes: the first transmission power P _{1_C} Is the smaller of the maximum transmit power of the first node and the third transmit power, P _{1_C} ＝min(P _max ,P _{3_C} ) And the min (.) is the minimum value operation.

As one embodiment, the phrase that the second transmit power is the lesser of the fourth transmit power and the maximum transmit power includes: the second transmission power P _{2_D} Is the smaller of the maximum transmit power of the first node and the fourth transmit power, P _{2_D} ＝min(P _max ,P _{4_D} ) Wherein the min (.) is the operation of taking the minimum value.

As one embodiment, the first node estimates a sidelink Path Loss (PL) based on the remaining communication range _SL , sidelink pathloss)。

As one embodiment, the first node estimates a sidelink Path Loss (PL) based on the second communication range _SL , sidelink pathloss)。

As a sub-embodiment of the above two embodiments, the secondary link path loss may be estimated by a car networking path loss formula.

AsIn a sub-embodiment of the above two embodiments, the path loss of the secondary link in free space can be represented by the formula PL _SL 32.44+20lg (d) +20lg (f) +30, wherein the PL is obtained by estimation _SL For sidelink path loss in dBm, the d (distance) is the residual communication range in kilometers (km), the f (frequency) is frequency in MHz (Mega Hertz), and the lg (gt) is a base-10 logarithmic operation.

As an embodiment, a fifth transmit power for transmitting the second signaling is determined according to a sidelink path loss of the first node; wherein the first transmit power is the lesser of the fifth transmit power and the maximum transmit power.

As an embodiment, a sixth transmit power for transmitting the second wireless signal is determined according to a sidelink path loss of the first node; wherein the second transmit power is the lesser of the sixth transmit power and the maximum transmit power.

As one embodiment, the first node estimates the secondary link loss PL from the RSRP of the secondary link _SL (Sidelink path loss).

As a sub-embodiment of the above embodiment, the reference signal is a sidelink CSI-RS.

As a sub-embodiment of the above embodiment, the reference signal is a secondary link SS.

As an embodiment, the fifth transmitting power is denoted as P _{5_C} P can be calculated by the 38.213 protocol of 3GPP in section 16.2 _PSCCH,SL The fifth transmit power is determined in relation to a frequency domain bandwidth of the second signaling.

As an embodiment, the fifth transmit power is lower than the second transmit power when the PSD of the first transmit power is lower than the PSD of the second transmit power

Wherein, the P _O,SL And said a _SL Indicated by the second information, the

The number of RBs of the frequency domain resource occupied for the second signaling, the mu being related to the SCS of the PSCCH channel, the i being the number of the transmitted time slot, the log ₁₀ (.) is a base 10 logarithm operation, and the dBm is a unit of transmit power.

For one embodiment, the fifth transmit power is higher than the second transmit power when the PSD of the first transmit power is 2 times the PSD of the second transmit power

And (4) determining.

As an example, the sixth transmission power P _{6_D} Can be calculated by the calculation P in section 16.2 of the 38.213 protocol of 3GPP _PSSCH,SL Is determined by the formula (I), i.e.

Wherein, the

As an example, the first transmission power P _{1_C} Is the smaller of the maximum transmit power of the first node and the fifth transmit power, P _{1_C} ＝min(P _max ,P _{5_C} )。

As an example, the second transmission power P _{2_D} Is the smaller of the maximum transmit power of the first node and the sixth transmit power, P _{2_D} ＝min(P _max ,P _{6_D} )。

As an embodiment, the first transmission power P _{1_C} Is the minimum of the maximum transmission power of the first node, the third transmission power and the fifth transmission power, i.e. P _{1_C} ＝min(P _max ,P _{3_C} ,P _{5_C} )。

As an example, the second transmission power P _{2_D} Is the minimum of the maximum transmission power of the first node, the fourth transmission power and the sixth transmission power, i.e. P _{2_D} ＝min(P _max ,P _{4_D} ,P _{6_D} )，。

As an embodiment, when HARQ is enabled, the first node U2 sends a Negative Acknowledgement (NACK) to the second node U1 when the first wireless signal is the first transmission of the first bit-rate and the first wireless signal is not successfully received.

As an embodiment, the phrase the first wireless signal is a first transmission of the first bit block includes: the first wireless signal is a first transmission (first transmission) of the first bit block.

As one embodiment, the phrase the first wireless signal is a first transmission of the first bit block includes: transmitting the first bit block in a first transmission opportunity of the M relay transmission opportunities when a maximum of M relay transmissions is configured to be allowed.

As an embodiment, the first signaling indicates a number of relay transmissions.

As a sub-embodiment of the foregoing embodiment, when the number of relay transmissions is a relay transmission threshold, the first wireless signal is indicated as first transmission of the first bit block, and the relay transmission threshold is indicated by the third information.

As a sub-embodiment of the foregoing embodiment, subtracting 1 from the number of relay transmissions to obtain an updated number of relay transmissions, and when the updated number of relay transmissions is greater than zero, indicating the updated number of relay transmissions in the second signaling; and when the updated relay transmission times are not more than zero, giving up sending the second signaling.

As an embodiment, the first signaling indicates a relay transmission identity.

As a sub-embodiment of the foregoing embodiment, when the relay transmission flag is set to 1, the first wireless signal is indicated as the first transmission of the first bit block, and the relay transmission flag is set to 0 in the second signaling.

As a sub-embodiment of the foregoing embodiment, when the relay transmission identifier is set to 0, the sending of the second signaling is abandoned.

As an embodiment, channel decoding is performed in the time-frequency resources scheduled by the first signaling, and whether channel decoding is correct is determined according to CRC.

As a sub-embodiment of the above embodiment, if failing to pass CRC validation, the first wireless signal is not successfully received; if the CRC validation is passed, the first wireless signal is successfully received.

Example 7

Embodiment 7 illustrates a schematic diagram of a first communication range, a first distance, a remaining communication range and a second communication range according to an embodiment of the present application, as shown in fig. 7.

In case a of embodiment 7, the remaining communication range is one of the second communication range set, in which case the second communication range is the remaining communication range.

In case B and case C of embodiment 7, the remaining communication range is not included in the second communication range set, and in this case, the second communication range may take a value in the second communication range set that is closest to the remaining communication range.

In case B of embodiment 7, the second communication range is smaller than the remaining communication range.

In case C of embodiment 7, the second communication range is larger than the remaining communication range.

Example 8

Embodiment 8 illustrates a schematic structural diagram of the first location information and the first communication range in the second-order SCI according to an embodiment of the present application, as shown in fig. 8. Fig. 8 shows only a partial domain of the second-order SCI.

For one embodiment, the second-order SCI includes the first location information and the first communication range.

As an embodiment, the first position information is represented by 12 bits.

As an embodiment, the first location information is represented by 8 bits.

As an embodiment, the first position information is represented by 5 bits.

As an embodiment, the first communication range is represented by 4 bits.

As an embodiment, the first communication range is represented by 5 bits.

In case a of embodiment 8, the second-order SCI includes a relay transmission identity.

As an embodiment, the relay transmission identity is represented by 1 bit.

In case B of embodiment 8, the second-order SCI includes the number of relay transmissions.

As an embodiment, the number of relay transmissions is represented by 1 bit.

As an embodiment, the number of relay transmissions is represented by 2 bits.

Example 9

Embodiment 9 illustrates a schematic diagram of time-frequency resources of a second signaling and a second wireless signal according to an embodiment of the present application, as shown in fig. 9.

As an embodiment, the second signaling and the second wireless signal occupy the same frequency domain bandwidth.

In case a of embodiment 9, the second signaling and the second radio signal are not multiplexed in the frequency domain and are multiplexed in the time domain.

In case a of embodiment 9, the PSD of the first transmit power and the second transmit power is the same.

As an embodiment, the second signaling and the second wireless signal are different in frequency domain bandwidth.

In case B and case C of embodiment 9, the second signaling and the second wireless signal are multiplexed in the time domain and the frequency domain, respectively, wherein in case B, the second signaling is not later in the time domain than the time domain resource of the second wireless signal, and in case C, the time domain resource of the second signaling may be in the time domain resource of the second wireless signal.

Example 10

Embodiment 10 illustrates a block diagram of a processing device in a first node according to an embodiment of the present application, as shown in fig. 10. In fig. 10, a first node processing apparatus 1000 includes a first receiver 1001, a first transmitter 1002, and a second transmitter 1003. The first receiver 1001 includes the transmitter/receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 of fig. 4 of the present application; the first transmitter 1002 includes a transmitter/receiver 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 of fig. 4; the second transmitter 1003 includes a transmitter/receiver 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 of fig. 4 of the present application.

In embodiment 10, a first receiver 1001 receives first signaling indicating first position information and a first communication range; determining a second communication range according to the first position information and the first communication range; a first transmitter 1002 that transmits a second signaling indicating second position information and the second communication range when the second communication range is larger than a first threshold; wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero.

As an embodiment, the first receiver 1001 receives first information indicating the second location information; determining a first distance according to the first position information and the second position information; wherein the second communication range is determined by a difference of the first communication range minus the first distance.

For one embodiment, the first receiver 1001 receives a first wireless signal and recovers a first bit block from the first wireless signal; the first transmitter 1002 transmitting a second wireless signal; wherein the first block of bits is used to generate the second wireless signal; the first signaling comprises configuration information of the first wireless signal; the second signaling includes configuration information of the second wireless signal.

For one embodiment, the first receiver 1001 receives second information indicating a maximum transmission power; the first transmitter 1002 transmitting the second signaling at a first transmission power; wherein the first transmit power is not greater than the maximum transmit power.

As an embodiment, the first receiver 1001 receives second information indicating a maximum transmission power; the first transmitter 1002 transmitting the second wireless signal at a second transmission power; wherein the second transmit power is not greater than the maximum transmit power.

For one embodiment, the first receiver 1001 receives second information indicating a maximum transmission power; determining a third transmitting power for sending the second signaling according to the downlink path loss of the first node; wherein the first transmit power is the lesser of the third transmit power and the maximum transmit power.

For one embodiment, the first receiver 1001 receives second information indicating a maximum transmission power; determining fourth transmitting power for sending the second wireless signal according to the downlink path loss of the first node; wherein the second transmit power is the lesser of the fourth transmit power and the maximum transmit power.

For one embodiment, the first receiver 1001 receives a first wireless signal and recovers a first bit block from the first wireless signal; a second transmitter 1003 transmitting a Negative Acknowledgement (NACK) when the received first wireless signal is the first transmission of the first bit block and the first wireless signal is not successfully received.

Example 11

Embodiment 11 is a block diagram illustrating a processing apparatus in a second node according to an embodiment of the present application, as shown in fig. 11. In fig. 11, a second node processing apparatus 1100 comprises a third transmitter 1101, a second receiver 1102. The third transmitter 1101 includes the transmitter/receiver 416 (including the antenna 420) and the transmit processor 415 and the controller/processor 440 of fig. 4 of the present application; the second receiver 1102 includes the transmitter/receiver 416 (including the antenna 420), the receive processor 412, and the controller/processor 440 of fig. 4 of the present application.

In embodiment 11, the third transmitter 1101 transmits a first signaling indicating first position information and a first communication range; the first location information and the first communication range are used to determine a second communication range; wherein the second communication range is used to determine whether to transmit a second signaling indicating second location information and the second communication range.

As an embodiment, the first location information and the second location information are used to determine a first distance; wherein the second communication range is determined by a difference of the first communication range minus the first distance.

For one embodiment, the third transmitter 1101 transmits a first wireless signal; wherein a first block of bits is used to generate the first wireless signal, the first signaling including configuration information for the first wireless signal; the first bit block is used to generate the second wireless signal, which includes configuration information for the second wireless signal.

As an embodiment, a first transmit power is used for transmitting the second signaling; wherein the first transmit power is not greater than a maximum transmit power, which is used to determine a maximum allowed transmit power.

As one embodiment, a second transmit power is used to transmit the second wireless signal; wherein the second transmit power is not greater than a maximum transmit power, the maximum transmit power being used to determine a maximum allowed transmit power.

As an embodiment, a downlink path loss is used to determine a third transmit power for transmitting the second signaling; wherein the first transmit power is the lesser of the third transmit power and a maximum transmit power, the maximum transmit power being used to indicate a maximum allowed transmit power.

As an embodiment, a downlink path loss is used to determine a fourth transmit power for transmitting the second wireless signal; wherein the second transmit power is the lesser of the fourth transmit power and a maximum transmit power, the maximum transmit power being used to indicate a maximum allowed transmit power.

As an embodiment, the second receiver 1102 monitors for a Negative Acknowledgement (NACK) when the transmitted first wireless signal is the first transmission of the first bit block.

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:

the first receiver receiving first information indicating the second location information; determining a first distance according to the first position information and the second position information;

wherein the second communication range is smaller than the first communication range, and the first threshold is a value greater than zero; the second communication range is determined by the difference of the first communication range minus the first distance; the first location information indicates a geographic location of a sender of the first signaling; the second location information indicates a geographic location of the first node.

2. The first node of claim 1, comprising:

the first receiver receives a first wireless signal and restores a first bit block according to the first wireless signal;

the first transmitter transmits a second wireless signal;

3. The first node of claim 1, comprising:

the first receiver receives second information, wherein the second information indicates maximum transmission power;

the first transmitter transmits the second signaling with a first transmission power;

4. The first node of claim 2, comprising:

the first receiver receives second information, wherein the second information indicates the maximum transmission power;

5. The first node of claim 4, comprising:

transmitting the second wireless signal at a second transmit power;

6. The first node according to any of claims 3 to 5, comprising:

the first transmitter determines a third transmission power for transmitting the second signaling according to the downlink path loss of the first node;

7. The first node of any of claim 5, comprising

The first transmitter determines fourth transmission power for transmitting the second wireless signal according to the downlink loss of the first node;

8. The first node according to any of claims 2, 4, 5 or 7, comprising:

a second transmitter to transmit a Negative Acknowledgement (NACK) when the received first wireless signal is a first transmission of the first bit block and the first wireless signal is not successfully received.

9. A second node configured for wireless communication, comprising:

a third transmitter that transmits a first signaling indicating first location information and a first communication range; the first location information and the first communication range are used to determine a second communication range; the first and second location information are used to determine a first distance;

wherein the second communication range is used by a recipient of the first signaling to determine whether to transmit a second signaling, the second signaling indicating second location information and the second communication range; the second communication range is determined by the difference of the first communication range minus the first distance; the first location information indicates a geographic location of the second node; the second location information indicates a geographic location of a recipient of the first signaling.

10. The second node of claim 9, wherein the third transmitter transmits a first wireless signal; wherein a first block of bits is used to generate the first wireless signal, the first signaling including configuration information of the first wireless signal; the first bit block is used to generate a second wireless signal, the second signaling including configuration information for the second wireless signal.

11. The second node according to claim 9, characterized in that a first transmission power is used for transmitting the second signaling; wherein the first transmit power is not greater than a maximum transmit power, which is used to determine a maximum allowed transmit power.

12. The second node according to claim 10, characterized in that a first transmission power is used for transmitting the second signaling; wherein the first transmit power is not greater than a maximum transmit power, which is used to determine a maximum allowed transmit power.

13. The second node according to any of claims 12, characterized in that a second transmission power is used for transmitting the second wireless signal; wherein the second transmit power is not greater than a maximum transmit power, the maximum transmit power being used to determine a maximum allowed transmit power.

14. The second node according to any of claims 11-13, wherein a downlink loss is used for determining a third transmit power for transmitting the second signaling; wherein the first transmit power is the lesser of the third transmit power and a maximum transmit power, the maximum transmit power being used to indicate a maximum allowed transmit power.

15. The second node according to any of claims 13, wherein downlink loss is used for determining a fourth transmit power for transmitting the second radio signal; wherein the second transmit power is the lesser of the fourth transmit power and a maximum transmit power, the maximum transmit power being used to indicate a maximum allowed transmit power.

16. The second node according to any of claims 10, 12, 13 or 15, comprising:

a second receiver monitors for a Negative Acknowledgement (NACK) when the transmitted first wireless signal is a first transmission of the first bit block.

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

18. The method in a first node according to claim 17, further comprising:

transmitting a second wireless signal;

19. The method in a first node according to claim 17, further comprising:

receiving second information indicating a maximum transmission power;

transmitting the second signaling with a first transmission power;

20. The method in the first node according to claim 18, further comprising:

receiving second information indicating a maximum transmission power;

transmitting the second signaling with a first transmission power;

21. The method in a first node according to any of claims 20, further comprising:

transmitting the second wireless signal at a second transmit power;

22. A method in a first node according to any of claims 19-21, further comprising:

23. The method in a first node according to claim 21, further comprising:

24. A method in a first node according to any of claims 18, 20, 21 or 23, further comprising:

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

transmitting a first signaling, wherein the first signaling indicates first position information and a first communication range; the first location information and the first communication range are used to determine a second communication range; the first and second location information are used to determine a first distance;

wherein the second communication range is used by a recipient of the first signaling to determine whether to send a second signaling, the second signaling indicating second location information and the second communication range; the second communication range is determined by the difference of the first communication range minus the first distance; the first location information indicates a geographic location of the second node; the second location information indicates a geographic location of a recipient of the first signaling.

26. The method in a second node according to claim 25, further comprising:

transmitting a first wireless signal;

wherein a first block of bits is used to generate the first wireless signal, the first signaling including configuration information of the first wireless signal; the first bit block is used to generate a second wireless signal, the second signaling including configuration information for the second wireless signal.

27. The method in the second node according to claim 25, further comprising:

a first transmit power is used to transmit the second signaling;

28. The method in a second node according to claim 26, further comprising:

a first transmit power is used to transmit the second signaling;

29. A method in a second node according to any of the claims 28, further comprising:

a second transmit power is used to transmit the second wireless signal;

30. A method in a second node according to any of claims 27-29, further comprising:

31. The method in the second node according to claim 29, further comprising:

32. A method in a second node according to any of claims 26, 28, 29 or 31, further comprising: