WO2023198173A1

WO2023198173A1 - Method for determining resource of sl positioning reference signal, terminal, and network side device

Info

Publication number: WO2023198173A1
Application number: PCT/CN2023/088292
Authority: WO
Inventors: 彭淑燕; 王园园
Original assignee: 维沃移动通信有限公司
Priority date: 2022-04-15
Filing date: 2023-04-14
Publication date: 2023-10-19
Also published as: CN116981077A

Abstract

The present application relates to the technical field of communications. Disclosed are a method for determining a resource of an SL positioning reference signal, a terminal, and a network side device. The method for determining a resource of an SL positioning reference signal of embodiments of the present application comprises: a first terminal determines a resource of an SL positioning reference signal on the basis of configuration information of a physical sidelink feedback channel (PSFCH).

Description

Method, terminal and network side equipment for determining SL positioning reference signal resources

Cross-references to related applications

This application claims priority to the Chinese patent application with application number 202210399394.7 submitted on April 15, 2022, and the invention title is "Method, terminal and network side equipment for determining SL positioning reference signal resources", which is fully incorporated by reference. Enter this application.

Technical field

This application belongs to the field of communication technology, and specifically relates to a method, terminal and network side equipment for determining SL positioning reference signal resources.

Background technique

The Long Term Evolution (LTE) system supports sidelink (SL) transmission, that is, data transmission between terminals directly on the physical layer. LTE SL is based on broadcast communication. Although it can be used to support basic security communications of vehicle to everything (V2X), it is not suitable for other more advanced V2X services. The 5G New Radio (NR) system will support more advanced SL transmission designs, such as unicast, multicast or multicast, etc., thus supporting more comprehensive service types. In mobile communication systems, positioning terminals is one of the important functions. Therefore, there are more and more studies on SL positioning in NR systems. SL positioning generally needs to be implemented based on reference signals.

Currently, SL reference signals include, for example, SSB, DMRS, DMRS, CSI-RS, PTRS, etc. Except for SSB, the remaining signals are limited to the frequency domain resource range of PSSCH. Therefore, the available frequency domain range of the above reference signal is smaller. In positioning, the greater the bandwidth of the reference signal used for positioning, the higher the positioning accuracy. In actual positioning scenarios, positioning accuracy requirements are generally higher, and positioning requires a larger amount of information. Current solutions may not meet positioning needs. Therefore, for those skilled in the art, how to allocate SL positioning reference signal resources to meet positioning requirements is an urgent technical problem that needs to be solved.

Contents of the invention

Embodiments of the present application provide a method, terminal and network-side device for determining SL positioning reference signal resources, which can solve the problem of how to allocate SL positioning reference signal resources to meet positioning requirements.

The first aspect provides a method for determining SL positioning reference signal resources, including:

The first terminal determines the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH. H.

In the second aspect, a method for transmitting side-link SL positioning reference signals is provided, including:

The first terminal determines a third resource of the SL positioning reference signal, and transmits the SL positioning reference signal based on the third resource.

The third aspect provides a method for determining SL positioning reference signal resources, including:

The network side device or the second terminal sends the configuration information of the physical side link feedback channel PSFCH to the first terminal, and the configuration information of the PSFCH is used by the first terminal to determine the resource of the SL positioning reference signal.

In the fourth aspect, a device for determining SL positioning reference signal resources in a side link is provided, including:

A processing module configured to determine the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

In the fifth aspect, a transmission device for side-link SL positioning reference signals is provided, including:

A processing module used to determine the third resource of the SL positioning reference signal;

A transmission module, configured to transmit the SL positioning reference signal based on the third resource.

In the sixth aspect, a device for determining SL positioning reference signal resources in a side link is provided, including:

A sending module configured to send configuration information of the physical side link feedback channel PSFCH to the first terminal, where the configuration information of the PSFCH is used by the first terminal to determine resources of the SL positioning reference signal.

In a seventh aspect, a first terminal is provided. The first terminal includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are executed by the processor. When implementing the steps of the method described in the first aspect or the second aspect.

In an eighth aspect, a first terminal is provided, including a processor and a communication interface, wherein the processor is configured to determine resources of the SL positioning reference signal based on configuration information of the physical side link feedback channel PSFCH.

In a ninth aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are executed by the processor. When implementing the steps of the method described in the third aspect.

In a tenth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send configuration information of the physical side link feedback channel PSFCH to the first terminal, and the configuration information of the PSFCH is Determine resources of the SL positioning reference signal at the first terminal.

In an eleventh aspect, a communication system is provided, including: a first terminal and a network side device. The first terminal may be configured to perform the method of determining SL positioning reference signal resources as described in the first aspect or the second aspect. The network side device may be configured to perform the steps of the method for determining SL positioning reference signal resources as described in the third aspect.

In a twelfth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the method described in the first or second aspect is implemented. steps, or steps for implementing the method as described in the third aspect.

In a thirteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface The port is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect or the second aspect, or to implement the method described in the third aspect.

A fourteenth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect, the third aspect The method described in the second aspect or the third aspect.

In this embodiment of the present application, on the SL, PSFCH is a resource that is periodically reserved in the resource pool, and the frequency domain resources available for PSFCH are the bandwidth of the entire resource pool. If the first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the frequency domain resource bandwidth available for the SL positioning reference signal may be the bandwidth of the resource pool. That is, the positioning accuracy of the SL positioning reference signal can be improved, because the larger the bandwidth of the SL positioning reference signal, the higher the positioning accuracy.

Description of the drawings

Figure 1 is a structural diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is one of the channel resource schematic diagrams provided by the embodiment of this application;

Figure 3 is the second schematic diagram of channel resources provided by the embodiment of this application;

Figure 4 is one of the flow diagrams of a method for determining SL positioning reference signal resources provided by an embodiment of the present application;

Figure 5 is one of the resource diagrams of the SL positioning reference signal provided by the embodiment of the present application;

Figure 6 is the second schematic resource diagram of the SL positioning reference signal provided by the embodiment of the present application;

Figure 7 is the third resource diagram of the SL positioning reference signal provided by the embodiment of the present application;

Figure 8 is the fourth schematic resource diagram of the SL positioning reference signal provided by the embodiment of the present application;

Figure 9 is the fifth resource diagram of the SL positioning reference signal provided by the embodiment of the present application;

Figure 10 is the sixth resource diagram of the SL positioning reference signal provided by the embodiment of the present application;

Figure 11 is a second schematic flowchart of a method for determining SL positioning reference signal resources provided by an embodiment of the present application;

Figure 12 is one of the structural schematic diagrams of a device for determining SL positioning reference signal resources provided by an embodiment of the present application;

Figure 13 is a second structural schematic diagram of a device for determining SL positioning reference signal resources provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 15 is a schematic diagram of the hardware structure of the first terminal provided by the embodiment of the present application;

Figure 16 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th ^generation Generation, 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (PC), teller machines or self-service Terminal devices such as mobile phones, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side equipment 12 may include access network equipment or core network equipment, where the access network equipment 12 may also be called It is a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all Some other appropriate terminology in the above field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the base station in the NR system is used as an example for introduction, and The specific type of base station is not limited.

The Long Term Evolution LTE system supports sidelink (SL) starting from the 12th release, which is used for direct data transmission between terminals without going through network side equipment. The NR SL defined in the R16 version includes the following channels:

Physical sidelink control channel (PSCCH); physical sidelink shared channel (PSSCH); physical sidelink broadcast channel (PSBCH); physical sidelink Feedback information (physical sidelink discovery feedback channel, PSFCH).

Among them, PSSCH allocates resources in units of sub-channels, and adopts a continuous resource allocation method in the frequency domain. The time domain resource of PSCCH is the number of symbols configured by the higher layer, and the frequency domain size is the parameter configured by the higher layer. The frequency domain resource size of PSCCH is less than or equal to the size of one subchannel, and PSCCH is located within the range of the lowest subchannel of PSSCH. An example diagram is shown in Figure 2.

The resources available for the PSFCH channel are determined on the SL resource pool according to the periodicity (eg, expressed as P_PSFCH) parameter. The terminal assumes that there are PSFCH resources in the resource time slot slot k in the SL resource pool. Among them, k mod P_PSFCH=0, then the terminal believes that there is PSFCH resource in slot k. The PSFCH channel occupies 1 or 2 symbols and is located in the last 2nd and 3rd symbols of the slot. The previous symbol of PSFCH is the symbol used for AGC adjustment (the symbol used for AGC adjustment is the repetition of PSFCH symbol). The next symbol of PSFCH is Gap. Among them, the parameter sl-PSFCH-Period-r16 is used to configure the period in the R16 version. As shown in Figure 3, Figure 3 shows a schematic diagram of the channel distribution of a physical resource block (Physical Resource Block, PRB).

PSFCH resources consist of time domain resources, frequency domain resources and code domain resources. The code domain uses a ZC sequence, and the code sequence generation depends on the cyclic shift (CS), u, v, where u and v are the group identifier and sequence identifier of the ZC sequence respectively. The PSFCH resource carries 1 bit of information bit for ACK/NACK feedback.

PSFCH resources have a fixed mapping relationship with PSCCH and/or PSSCH. One or more PSCCH and/or PSSCH occasions may correspond to one PSFCH occasion. One PSCCH/PSSCH resource can correspond to multiple PSFCH resources. When the terminal performs PSFCH transmission, it determines multiple corresponding PSFCH resources based on the received PSCCH/PSSCH resources, and determines a transmitted PSFCH resource based on the terminal ID.

NR SL resource allocation method:

NR V2X defines two resource allocation modes. One is mode1, which schedules resources for network-side devices (such as base stations); the other is mode2, where the terminal decides what resources to use for transmission. At this time, the resource information may come from broadcast messages or preconfigured information from network-side devices. If the terminal works within the range of the network side device and has an RRC connection with the network side device, it can be mode1 and/or mode2. If the terminal works within the range of the network side device but has no RRC connection with the network side device, it can only work in mode2. If the terminal is outside the range of the network side device, it can only work in mode2 and perform V2X transmission according to the preconfigured information.

For mode 2, the specific working method is as follows: 1) After the resource selection is triggered, the TX terminal first determines the resource selection window. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered, and the upper boundary of the resource selection is at the T1 time after the resource selection is triggered. T2 time, where T2 is the value selected by the terminal implementation method within the packet delay budget (PDB) of its TB transmission, and T2 is not earlier than T1. 2) The terminal needs to determine the resource before resource selection The selected candidate resource set is compared with the corresponding RSRP threshold based on the RSRP measured on the resources within the resource selection window. If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set. 3) After the resource set is determined, the terminal randomly selects transmission resources from the alternative resource set. In addition, the terminal can reserve transmission resources for subsequent transmissions during this transmission.

And NR V2X supports a chained resource reservation method, that is, a SCI can reserve the current resource, and can reserve up to two additional resources. In the next resource, it can indicate two more reserved resources. Within the selection window, resources can be continuously reserved using dynamic reservation.

The method in the embodiment of this application is used for SL positioning. On SL, PSFCH is a periodically reserved resource in the resource pool, and the frequency domain resources available for PSFCH are the bandwidth of the entire resource pool; PSSCH, PSCCH, DMRS, CSI-RS, PTRS, etc. are limited to the bandwidth of SL PSSCH (the range is less than or equal to the bandwidth of the resource pool). In positioning, the greater the bandwidth of the positioning reference signal, the higher the positioning accuracy. Therefore, it is considered to determine the resources of the SL positioning reference signal based on the configuration information of the PSFCH, improve the positioning accuracy of the SL positioning reference signal, and at the same time minimize the complexity of the SL positioning reference signal design.

The SL positioning reference signal in the embodiment of this application may include: SL positioning reference signal (Position Reference Signal, PRS), and SL reference signals extended for positioning, such as: side link synchronization signal block S-SSB, SL channel status Information reference signal (Channel State Information Reference Signal, CSI-RS), SL phase tracking reference signal (PhaseTracking Reference Signal, PTRS) or SL demodulation reference signal (Demodulatin Reference Signal, DMRS).

The method for determining SL positioning reference signal resources provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Figure 4 is one of the flow diagrams of a method for determining SL positioning reference signal resources provided by an embodiment of the present application. As shown in Figure 4, the method provided by this embodiment includes:

Step 101: The first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

Specifically, the configuration information of PSFCH may be predefined by the protocol, preconfigured (for example, factory configuration), configured by the network side device, or configured by the second terminal (for example, information configured by the second terminal 1 to the first terminal 2), The PSFCH configuration information may include, for example, PSFCH candidate resource information, cycle and other information. Based on the PSFCH configuration information, the first terminal may perform resource multiplexing in a variety of ways to determine the resources of the SL positioning reference signal.

Optionally, in the method of this embodiment, radio resource control (Radio Resource Control, RRC), media access layer control element (Medium Access Control Element, MAC CE), downlink control information (Downlink Control Information, DCI) can be used. ), PC5-RRC (RRC of PC5 interface), sidelink control information (Sidelink Control Information, SCI) configuration or indication information.

The resources of the SL positioning reference signal may be resources actually used by the SL positioning reference signal, or resources available for the SL positioning reference signal. Resources may include time domain resources, frequency domain resources or power resources, etc.

In the method of this embodiment, on the SL, PSFCH is a resource that is periodically reserved in the resource pool, and the frequency domain resources available for PSFCH are the bandwidth of the entire resource pool. If the first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the frequency domain resource bandwidth available for the SL positioning reference signal may be the bandwidth of the resource pool. That is, the positioning accuracy of the SL positioning reference signal can be improved, because the larger the bandwidth of the SL positioning reference signal, the higher the positioning accuracy.

Optionally, step 101 can be implemented in the following ways:

Method 1: When the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the first terminal is based on the mapping of the SL positioning reference signal and the PSFCH Rules to determine the resources of SL positioning reference signals;

Optionally, N is 1 or 2 or 4.

Specifically, the first cycle of PSFCH may be a cycle defined in previous protocol versions, such as the PSFCH cycle defined in R16 and R17 versions, and the second cycle of PSFCH may be a newly defined PSFCH cycle, for example, represented as R18 PSFCH cycle.

If the configured period value = 0, it means that the PSFCH resource is not included; if the period value is 1, 2, 4 (for example, the value range of the period value is: 0, 1, 2, 4), it means that there is PSFCH in the resource pool. resource. If the period value = 4, it means that there is one PSFCH available resource for every 4 slots in the resource pool.

If the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the first terminal determines the SL positioning reference based on the mapping rules between the SL positioning reference signal and the PSFCH. Signal resources.

Optionally, the mapping rule is a predefined, preconfigured or configured parameter (which may be a network side device or other terminal).

For example: the protocol is predefined as the first mapping rule; or the protocol is predefined as the second mapping rule;

Optionally, the mapping rule is determined according to the first cycle of the PSFCH or the second cycle of the PSFCH.

Specifically, the mapping rule may be determined according to the configured period value of the PSFCH. For example, when the period value of the first period of PSFCH=1, it is the second mapping rule; otherwise (that is, the period is 2 or 4), it is the first mapping rule.

In the above embodiment, when the PSFCH is configured, the resources of the SL positioning reference signal can be determined based on the mapping rules of the SL positioning reference signal and the PSFCH. The frequency domain resource bandwidth available for the SL positioning reference signal can be the bandwidth of the resource pool. That is, the positioning accuracy of the SL positioning reference signal can be improved.

Optionally, the first terminal determines the resources of the SL positioning reference signal based on the mapping rules of the SL positioning reference signal and the PSFCH, which can be implemented in the following ways:

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resource are located in the same time slot and have different symbols;

Alternatively, the SL positioning reference signal resource is located in time slot k1, where k1 mod P1=0, and P1 is the first cycle of PSFCH.

Specifically, when the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH are in the same time slot, and the symbols do not overlap;

In other words, the SL positioning reference signal is on slot k1 mod P1=0. Slot k1 is the resource in the SL resource pool, and P is the first cycle of PSFCH.

For example, as shown in Figure 5 and Figure 6, the frequency domain resources available for the SL positioning reference signal are different.

The frequency domain resources that can be occupied by the SL positioning reference signal may be the frequency domain resources of the resource pool or the frequency domain resources corresponding to the PSSCH. The resources represented by SL PRS in Figure 5 are the available resources of the SL positioning reference signal, or the actually occupied resources.

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resources are located in different time slots;

Alternatively, the SL positioning reference signal is located in time slot k2, where k2 mod P_prs=offset_prs; P_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal.

Specifically, when the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH are on different time slots.

For example, it is applicable when the period of the configured SL positioning reference signal is smaller than the first period or the second period of the PSFCH.

The SL positioning reference signal is in the time slot of slot k2 mode P_prs=offset_prs. Among them, P_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal. .

For example, as shown in FIG. 7 , assuming that the first period of the PSFCH is 2 and the period of the SL positioning reference signal is 1, the figure shows the frequency domain resources that the SL positioning reference signal can occupy.

Optionally, the resource of the SL positioning reference signal is located on at least one of the following symbols, and the at least one symbol includes: symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Specifically, when the mapping rule is the first mapping rule, the optional symbol positions of the SL positioning reference signal are symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

In the above embodiment, when the first mapping rule is adopted, multiple methods of SL positioning reference signal resources can be used, which is highly flexible and can meet the needs of various scenarios.

Optionally, the first terminal determines the resources of the SL positioning reference signal based on the mapping rules of the SL positioning reference signal and the PSFCH, which can be implemented in the following manner:

When the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on the candidate resource of the PSFCH; the candidate resource of the PSFCH is determined according to the second period and/or the first offset value of the PSFCH.

Specifically, when the mapping rule is the first mapping rule, if PSFCH is configured in the resource pool, the time domain resources of the SL positioning reference signal can be TDM multiplexed with the PSFCH time domain resources, for example, resources in different slots. , the SL positioning reference signal occupies the last 4 symbols. Optionally, the SL positioning reference signal may adopt the same structure as the PSFCH.

Configure the second cycle of PSFCH, for example, recorded as R18 PSFCH cycle, and the SL positioning reference signal is transmitted in the candidate resources of PSFCH.

Optionally, the candidate resources of the PSFCH are determined based on the second period and/or the first offset value of the PSFCH.

Wherein, the first offset value may be an offset value corresponding to the second cycle of the PSFCH.

Optionally, the second period of PSFCH is smaller than the first period of PSFCH;

Or, time slot k3 is the time slot in which PSFCH exists, k3 mod P2=0, where P2 is the second cycle of PSFCH.

Specifically, the first terminal may assume that PSFCH exists on slot k3, slot k3 mod P2=0, and P2 is the second cycle of PSFCH.

Optionally, the resource of the SL positioning reference signal is located on a resource in the SL resource pool other than the first resource of the PSFCH, and the first resource of the PSFCH is determined through the first cycle of the PSFCH.

Optionally, the resource of the SL positioning reference signal is located on symbol 11 and/or symbol 12.

Specifically, R16/R17 PSFCH resources can be excluded semi-statically. For example, R18 PSFCH cycle = 1, R16/R17 PSFCH cycle = 4; then the SL positioning reference signal can be transmitted at slot k mod 4 = 1, 2, 3.

For example, R18 PSFCH cycle = 2, R16/R17 PSFCH cycle = 4; then the SL positioning reference signal can be transmitted at the position of slot k mod 2 = 1.

Exemplarily, as shown in Figure 8, the network side device and/or the second terminal configures the second cycle of PSFCH, such as the R18 PSFCH cycle.

The network side device and/or the second terminal configure the first cycle of PSFCH, such as the NR R16/R17 PSFCH cycle. Optionally, the first candidate resources of R16/R17 PSFCH are a subset of the second candidate resources of R18 PSFCH. Among them, the PSFCH of the R16 version is used to transmit HARQ feedback information; the PSFCH of the R17 version can be used to transmit auxiliary information, such as collision information.

Based on the configuration information of R18 PSFCH and the configuration information of R16/R17 PSFCH, the first terminal determines that the resources available for the SL positioning reference signal are the first candidate resources of the PSFCH candidate resources that are not R16/R17 PSFCH.

For example: R16/R17 PSFCH cycle=2, R18 SL PSFCH cycle=1; SL positioning reference signal can be transmitted at the position of slot k mod 2=1.

Optionally, the first terminal considers that the available position of R16/R17 PSFCH is slot k with mode 2=0.

As shown in Figure 8, the SL positioning reference signal can use the PSFCH structure configured for the resource pool to reduce the design complexity of the SL positioning reference signal. The SL positioning reference signal corresponds to the four symbols at the end of the slot. In the frequency domain, it can be considered that the resources available for the SL positioning reference signal are the resources in the entire frequency domain of the resource pool. For the SL positioning reference signal, the larger the transmittable bandwidth, the better the positioning accuracy. The resources represented by SL PRS in Figure 8 are the available resources of the SL positioning reference signal, or the actually occupied resources.

In one embodiment, the resource of the SL positioning reference signal is located in time slot k4, where k4 mod P_prs=offset_prs, P_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal.

Optionally, in time slot k4, the resources of the above-mentioned SL positioning reference signal do not conflict with the resources of the PSFCH; and/or,

offset_prs is greater than 0; and/or,

The period of the SL positioning reference signal is an integer multiple of the first period of the PSFCH.

Specifically, the period (for example, recorded as P_prs) and/or the offset value (offset_prs) of the SL positioning reference signal can be predefined, preconfigured, or configured; optionally, the SL positioning reference signal can be configured independently, and the configuration realizes the SL positioning reference The signal and PSFCH are time-division multiplexed.

Optionally, the first terminal expects that the SL positioning reference signal resource exists on slot k4 mod P_prs=offset_prs.

Optionally, the first terminal expects that slot k4 does not conflict with PSFCH resources.

Exemplarily, the network side device and/or the second terminal configures the period of the SL positioning reference signal (the structure of the SL positioning reference signal is the same as the PSFCH structure, except that the position of the PSFCH is TDM resource configuration, depending on the configuration to ensure the SL positioning reference The signal candidate resources do not conflict with the PSFCH candidate resources.

As shown in Figure 9, when the period of the SL positioning reference signal = 2, the first period of the PSFCH = 2, the PSFCH The position of slot k mod 2=0 is sent; the SL positioning reference signal is sent at the position of slot k mod 2=1.

In the above embodiment, the period and offset value of the SL positioning reference signal are directly configured. It also uses multiple methods to locate SL reference signal resources, which is more flexible and can meet the needs of various scenarios.

Optionally, when the mapping rule is the second mapping rule, the first terminal determines the resources of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH, including at least one of the following:

The SL positioning reference signal resource is located in time slot k5, and time slot k5 is the time slot in which PSFCH resources exist;

The first terminal determines the resources of the SL positioning reference signal by performing rate matching or puncturing on the PSFCH resources; or,

The interval between the SL positioning reference signal resources and the PSFCH resources is predefined or configured or indicated.

The PSFCH resources are actually occupied PSFCH resources or available PSFCH resources.

Specifically, if PSFCH is configured in the resource pool, the SL positioning reference signal and PSFCH can be multiplexed for FDM;

The first terminal transmits (sends/receives) the SL positioning reference signal on slot k5, and slot 5 is the slot where the first terminal expects PSFCH resources to exist.

Optionally, perform rate matching or puncturing on the PSFCH to determine the resources of the SL positioning reference signal. However, the performance of the SL positioning reference signal may be limited.

Predefine, configure or indicate the gap between the SL positioning reference signal resource and the PSFCH resource. The gap is to reduce interference between the SL positioning reference signal and the PSFCH. The gap is a guard bandwidth in the frequency domain; or a guard interval in the time domain.

Exemplarily, the SL positioning reference signal is configured to be located in the PSFCH candidate time resource. The SL positioning reference signal performs rate matching or hole punching on the PSFCH.

As shown in Figure 10, the first period of PSFCH is 2. A/N is the actual sending position of PSFCH. In PSFCH resources, non-A/N positions can be used for sending SL positioning reference signals.

In the above embodiment, when the second mapping rule is adopted, multiple methods can be used to locate the resource of the SL reference signal, which is highly flexible and can meet the needs of various scenarios.

Method 2: When the PSFCH is not configured in the SL resource pool, or the first period of the configured PSFCH is 0, the first terminal determines the resource of the SL positioning reference signal based on the first information, and the first information includes at least one of the following: item:

The second period of the PSFCH, the first offset value, the period of the SL positioning reference signal, or the offset value of the SL positioning reference signal.

In this method, there is no PSFCH configuration, and the resources and resources of the SL positioning reference signal can be independently configured.

In the above embodiment, when the PSFCH is not configured, SL positioning may be configured based on at least one of the second period of the PSFCH, the first offset value, the period of the SL positioning reference signal, or the offset value of the SL positioning reference signal. Reference signal resources to improve the positioning accuracy of SL positioning reference signals as much as possible.

Optionally, the method also includes:

When the resources of the SL positioning reference signal and the resources of the PSFCH overlap in time on the second resource, the first terminal performs at least one of the following:

If the resource for sending the SL positioning reference signal and the resource for receiving the PSFCH overlap in time, the SL positioning reference signal is sent on the second resource, or the PSFCH is received on the second resource, or based on the SL positioning reference signal and The priority of the PSFCH determines the transmission behavior; or,

If the resource for receiving the SL positioning reference signal overlaps in time with the resource for transmitting the PSFCH, the SL positioning reference signal is received on the second resource or the PSFCH is sent on the second resource, or based on the SL positioning reference signal and the PSFCH The priority determines the transfer behavior.

Specifically, in the case where the transmission of the SL positioning reference signal overlaps with the PSFCH in time, if the first terminal transmits the SL positioning reference signal and receives the PSFCH overlapping, this situation is that the first terminal is in a half-duplex multiplexing mode. The transmission is affected, the first terminal may perform at least one of the following:

SL positioning reference signal priority;

Or, PSFCH takes priority;

Or, determine whether to send the SL positioning reference signal or receive the PSFCH according to the priority of the SL positioning reference signal and the PSFCH; if the priority of sending the SL positioning reference signal is higher than the priority of receiving the PSFCH, then send the SL positioning reference signal; otherwise, receive PSFCH.

If the UE's reception of SL PRS overlaps with the transmission of PSFCH, which affects the transmission of the first terminal in half-duplex multiplexing mode, the first terminal may perform at least one of the following:

SL positioning reference signal priority;

Or, PSFCH takes priority;

Alternatively, determine whether to receive the SL positioning reference signal or send the PSFCH based on the priorities of the SL positioning reference signal and the PSFCH; if the priority of receiving the SL positioning reference signal is higher than the priority of sending the PSFCH, receive the SL PRS; otherwise, send the PSFCH.

In the above embodiment, when the resources of the SL positioning reference signal and the resources of the PSFCH overlap in time, multiple methods can be used to determine the transmission behavior, which provides greater flexibility.

In this embodiment of the present application, a method for transmitting side-link SL positioning reference signals is also provided, including:

The third resource for determining the SL positioning reference signal here may be any of the foregoing methods, or other methods, which are not limited in this embodiment of the present application.

In an embodiment, transmitting the SL positioning reference signal based on the third resource includes:

When the resource for sending the SL positioning reference signal and the resource for receiving the SL positioning reference signal overlap in time on the third resource, the first terminal performs at least one of the following:

Send the SL positioning reference signal on the third resource;

Receive the SL positioning reference signal on the third resource;

The transmission behavior is determined based on the priority of sending and receiving SL positioning reference signals.

Specifically, if the SL positioning reference signal sent by the first terminal and the SL positioning reference signal received by the first terminal overlap in time, this situation affects the transmission of the first terminal in the half-duplex multiplexing mode, then the first terminal Terminal execute at least one of the following:

Prioritize sending SL positioning reference signals;

Or, give priority to receiving the SL positioning reference signal;

Or, determine whether to send the SL positioning reference signal or receive the SL positioning reference signal according to the priority; if the priority of sending the SL positioning reference signal is higher than the priority of receiving the SL positioning reference signal, then send the SL positioning reference signal; otherwise, receive the SL positioning reference signal. Positioning reference signal.

Optionally, transmitting the SL positioning reference signal based on the third resource includes:

The first terminal sends M1 SL positioning reference signals based on the first condition, where M1 is an integer greater than or equal to 1, and the first condition satisfies at least one of the following:

Select the M1 SL positioning reference signals with the smallest remaining duration in the transmission time window to send;

Select the M1 SL positioning reference signals with the highest priority to send;

Select the M1 SL positioning reference signals with the largest service quality and QoS to send.

Optionally, there are M2 SL positioning reference signals to be sent, M2 is greater than M _max , the M _max is the maximum number of SL positioning reference signals that can be sent by the first terminal, and M1 is less than or equal to M _max .

For example, this scenario is: M2 SL positioning reference signals to be sent; where M2>M _max , M _max is the maximum number of SL positioning reference signals that the first terminal can send (for example, subject to power restrictions), from M2 Select M1 positioning reference signals from the SL positioning reference signals to send M1 less than or equal to M _max .

Specifically, the first terminal may select M1 SL positioning reference signals to send based on priority, QoS or delay, etc., satisfying at least one of the following:

The first terminal selects M1 SL positioning reference signals with the smallest remaining delay to send. For example, if multiple target first terminals trigger and assist the first terminal in sending SL positioning reference signals, a sending time window can be set, and the first terminal can select M1 SL positioning reference signals with the smallest remaining duration in the sending time window to send.

The first terminal selects the M1 SL positioning reference signals with the highest priority to send. For example, assuming that the smaller the priority value is, the higher the priority is, then M1 SL positioning reference signals with the smallest priority value are selected for transmission.

Figure 11 is one of the flow diagrams of a method for determining side link SL positioning reference signal resources provided by an embodiment of the present application. As shown in Figure 4, the method provided by this embodiment includes:

Step 201: The network side device or the second terminal sends the configuration information of the physical side link feedback channel PSFCH to the first terminal. The configuration information of the PSFCH is used by the first terminal to determine the resources of the SL positioning reference signal.

Optionally, PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, Or when the first period of the configured PSFCH is N, the resources of the SL positioning reference signal are determined based on the mapping rules of the SL positioning reference signal and PSFCH; N is 1 or 2 or 4; or,

When the PSFCH is not configured in the SL resource pool, or the first period of the configured PSFCH is 0, the resource of the SL positioning reference signal is determined based on the first information, and the first information includes at least one of the following:

Optionally, when the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resource are located in the same time slot and have different symbols;

Optionally, when the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resources are located in different time slots;

Optionally, when the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on the candidate resource of the PSFCH; the candidate resource of the PSFCH is based on the second cycle of the PSFCH and/or the first determined by an offset value.

Optionally, the second period of the PSFCH is smaller than the first period of the PSFCH;

Alternatively, time slot k3 is a time slot in which PSFCH exists, k3 mod P2=0, where P2 is the second cycle of PSFCH.

Optionally, the resource of the SL positioning reference signal is located in time slot k4, where k4 mod P_prs=offset_prs, the P_prs is the period of the SL positioning reference signal, and the offset_prs is the offset value of the SL positioning reference signal. .

Optionally, on the time slot k4, the resources of the SL positioning reference signal do not conflict with the resources of the PSFCH; and/or,

The offset_prs is greater than 0; and/or,

Optionally, when the mapping rule is the second mapping rule, at least one of the following is satisfied:

The resource of the SL positioning reference signal is located in time slot k5, and the time slot k5 has PSFCH resources. time slot;

The resource of the SL positioning reference signal is determined by the first terminal by performing rate matching or puncturing on the PSFCH; or,

Optionally, the mapping rule between the SL positioning reference signal and the PSFCH is predefined, preconfigured or configured.

The specific implementation process and technical effects of the method in this embodiment are the same as those in the first terminal-side method embodiment. For details, please refer to the detailed introduction in the first terminal-side method embodiment, which will not be described again here.

For the method of determining side-link SL positioning reference signal resources provided by the embodiments of the present application, the execution subject may be a device for determining SL positioning reference signal resources. The method for determining side-link SL positioning reference signal resources performed by the device for determining SL positioning reference signal resources in the embodiment of the present application is taken as an example to illustrate the device for determining SL positioning reference signal resources provided by the embodiment of the present application.

Figure 12 is one of the structural schematic diagrams of a device for determining SL positioning reference signal resources provided by an embodiment of the present application. As shown in Figure 12, the device for determining SL positioning reference signal resources provided by this embodiment includes:

The processing module 210 is configured to determine the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

Optionally, when the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the first terminal bases the positioning reference on the SL The mapping rules between signals and PSFCH determine the resources of the SL positioning reference signal; N is 1 or 2 or 4; or,

When the PSFCH is not configured in the SL resource pool, or the first period of the configured PSFCH is 0, the first terminal determines the resource of the SL positioning reference signal based on first information, and the first information includes at least the following: One item:

The offset_prs is greater than 0; and/or,

Optionally, in the case where the mapping rule is the second mapping rule, the processing module 210 is specifically configured to perform at least one of the following:

The resource of the SL positioning reference signal is located in time slot k5, and the time slot k5 is a time slot in which PSFCH resources exist;

Determine the resources of the SL positioning reference signal by performing rate matching or puncturing on the PSFCH resources; or,

Optionally, in the case where the resources of the SL positioning reference signal and the resources of the PSFCH overlap in time on the second resource, the processing module 210 is further configured to perform at least one of the following:

If the resources for receiving the SL positioning reference signal and the resources for transmitting the PSFCH overlap in time, then Receive the SL positioning reference signal on the second resource or send the PSFCH on the second resource, or determine the transmission behavior based on the priorities of the SL positioning reference signal and the PSFCH.

Embodiments of the present application also provide a transmission device for side-link SL positioning reference signals, including:

A processing module configured to determine a third resource of the SL positioning reference signal, and transmit the SL positioning reference signal based on the third resource.

Optionally, the processing module is specifically used for:

In the case where the resource for transmitting the SL positioning reference signal and the resource for receiving the SL positioning reference signal on the third resource overlap in time, perform at least one of the following:

Send an SL positioning reference signal on the third resource;

Receive an SL positioning reference signal on the third resource;

Optionally, the processing module is specifically used for:

The first terminal sends M1 SL positioning reference signals based on a first condition, where M1 is an integer greater than or equal to 1, and the first condition satisfies at least one of the following:

The device of this embodiment can be used to execute the method of any one of the foregoing first terminal-side method embodiments. Its specific implementation process and technical effects are the same as those in the first terminal-side method embodiment. For details, see First Terminal The detailed introduction of the side method embodiment will not be described again here.

Figure 13 is a second structural schematic diagram of a device for determining SL positioning reference signal resources provided by an embodiment of the present application. As shown in Figure 13, the device for determining SL positioning reference signal resources provided by this embodiment includes:

The sending module 310 is configured to send the configuration information of the physical side link feedback channel PSFCH to the first terminal, where the configuration information of the PSFCH is used by the first terminal to determine the resource of the SL positioning reference signal.

Optionally, when the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the resource of the SL positioning reference signal is based on the Determined by the mapping rules between the SL positioning reference signal and PSFCH; N is 1 or 2 or 4; or,

Optionally, when the mapping rule is the first mapping rule, the SL positioning reference signal and PSFCH The resources are located in the same time slot and have different symbols;

The offset_prs is greater than 0; and/or,

The device of this embodiment can be used to execute the method of any of the foregoing network-side method embodiments. Its specific implementation process and technical effects are the same as those in the network-side method embodiments. For details, please refer to the network-side method embodiments. Detailed introduction will not be repeated here.

The device for determining the SL positioning reference signal resource in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be the first terminal, or may be other devices other than the first terminal. For example, the first terminal may include but is not limited to the type of first terminal 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The device for determining SL positioning reference signal resources provided by the embodiments of the present application can implement each process implemented by the method embodiments of Figures 4 to 10 and achieve the same technical effect. To avoid duplication, details will not be described here.

Optionally, as shown in Figure 14, this embodiment of the present application also provides a communication device 1400, which includes a processor 1401 and a memory 1402. The memory 1402 stores programs or instructions that can be run on the processor 1401, such as , when the communication device 1400 is the first terminal, when the program or instruction is executed by the processor 1401, each step of the above method embodiment for determining side link SL positioning reference signal resources is implemented, and the same technical effect can be achieved. When the communication device 1400 is a network-side device, when the program or instruction is executed by the processor 1401, each step of the method embodiment of determining the side link SL positioning reference signal resource is implemented, and the same technical effect can be achieved. In order to avoid duplication , we won’t go into details here.

Embodiments of the present application also provide a first terminal, including a processor and a communication interface. The processor is configured to determine the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH. This first terminal embodiment corresponds to the above-mentioned first terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this first terminal embodiment and can achieve the same technical effect. Specifically, FIG. 15 is a schematic diagram of the hardware structure of a first terminal that implements an embodiment of the present application.

The first terminal 1000 includes but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010 At least some parts of etc.

Those skilled in the art can understand that the first terminal 1000 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby managing charging, discharging, and Power consumption management and other functions. The structure of the first terminal shown in Figure 15 does not constitute a limitation on the first terminal. The first terminal may include more or less components than shown in the figure, or combine certain components, or arrange different components, where No longer.

It should be understood that in this embodiment of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and microphone 10042, the graphics processor 10041 processes image data of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072 . Touch panel 10071, also known as touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1001 can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network side device. Generally, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 1009 may be used to store software programs or instructions as well as various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage program or instruction area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, image playback function, etc.), etc. Additionally, memory 1009 may include volatile memory or nonvolatile memory, or memory 1009 may include both volatile and nonvolatile memory. Including high-speed random access memory, it can also include non-volatile memory, where the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), programmable read-only memory (Programmable ROM, PROM), Erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable type of memory such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, where the application processor mainly processes operating systems, user interfaces, application programs or instructions, etc. In operation, the modem processor mainly processes wireless communication signals, such as the baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1010.

The processor 1010 is configured to determine the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

Because on SL, PSFCH is a resource that is periodically reserved in the resource pool, and the frequency domain resources available for PSFCH are the bandwidth of the entire resource pool. If the first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the frequency domain resource bandwidth available for the SL positioning reference signal may be the bandwidth of the resource pool. That is, the positioning accuracy of the SL positioning reference signal can be improved, because the larger the bandwidth of the SL positioning reference signal, the higher the positioning accuracy.

Optionally, the resource of the SL positioning reference signal is located in time slot k4, where k4 mod P_prs=offset_prs, the P_prs is the period of the SL positioning reference signal, and the offset_prs is the SL fixed period. The offset value of the bit reference signal.

The offset_prs is greater than 0; and/or,

Optionally, in the case where the resources of the SL positioning reference signal and the resources of the PSFCH on the second resource overlap in time, the processor 1010 is further configured to perform at least one of the following:

In an embodiment, the processor 1010 is configured to determine a third resource of the SL positioning reference signal, and transmit the SL positioning reference signal based on the third resource.

Optionally, processor 1010 is specifically used for:

Send an SL positioning reference signal on the third resource;

Receive an SL positioning reference signal on the third resource;

Optionally, processor 1010 is specifically used for:

Embodiments of the present application also provide a second terminal, including a processor and a communication interface. The communication interface is used to send configuration information of the physical side link feedback channel PSFCH to the first terminal, and the configuration information of the PSFCH is used for the third terminal. A terminal determines the resource of the SL positioning reference signal. This second terminal embodiment corresponds to the above-mentioned second terminal method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this second terminal embodiment, and can achieve the same technical effect. Optionally, the second terminal can be implemented using the above structure of the first terminal.

An embodiment of the present application also provides a network side device, including a processor and a communication interface. The communication interface is used to send configuration information of the physical side link feedback channel PSFCH to the first terminal, and the configuration information of the PSFCH is used for the third terminal. A terminal determines the resource of the SL positioning reference signal. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 16 , the network side device 700 includes: an antenna 71 , a radio frequency device 72 , a baseband device 73 , a processor 75 and a memory 75 . The antenna 71 is connected to the radio frequency device 72 . In the uplink direction, the radio frequency device 72 receives information through the antenna 71 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72. The radio frequency device 72 processes the received information and then sends it out through the antenna 71.

The above frequency band processing device may be located in the baseband device 73 , and the method performed by the network side device in the above embodiment may be implemented in the baseband device 73 . The baseband device 73 includes a baseband processor 75 and a memory 75 .

The baseband device 73 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. The program performs the network device operations shown in the above method embodiment.

The network side device of the baseband device 73 may also include a network interface 76 for exchanging information with the radio frequency device 72. The interface is, for example, a common public radio interface (CPRI).

Specifically, the network side device 700 in this embodiment of the present invention also includes: instructions or programs stored in the memory 75 and executable on the processor 75. The processor 75 calls the instructions or programs in the memory 75 to execute the various operations shown in Figure 13. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

Embodiments of the present application also provide a readable storage medium, with a program or instructions stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above method embodiment for determining SL positioning reference signal resources is implemented. , and can achieve the same technical effect, so to avoid repetition, they will not be described again here.

Wherein, the processor is the processor in the first terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above determination of SL positioning reference signal resources. Each process of the method embodiment can achieve the same technical effect. To avoid repetition, it will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above determination of the SL positioning reference signal. Each process of the resource method embodiment can achieve the same technical effect. To avoid duplication, it will not be described again here.

An embodiment of the present application also provides a communication system, including: a first terminal and a network side device. The first terminal can be used to perform the steps of the method for determining SL positioning reference signal resources as described above. The network side device The steps may be used to perform the method of determining SL positioning reference signal resources as described above. Optionally, the communication system can adopt the system architecture as shown in Figure 1.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. Specific embodiments, the above specific embodiments are only illustrative and not restrictive. Under the inspiration of this application, those of ordinary skill in the art can, without departing from the purpose of this application and the scope protected by the claims, It can also be made in many forms, all of which fall within the protection of this application.

Claims

A method for determining side link SL positioning reference signal resources, including:

The first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.
The method according to claim 1, wherein the first terminal determines the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, including:

When the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the first terminal bases the SL positioning reference signal and the PSFCH Mapping rules to determine the resources of the SL positioning reference signal; N is 1 or 2 or 4; or,

When the PSFCH is not configured in the SL resource pool, or the first period of the configured PSFCH is 0, the first terminal determines the resource of the SL positioning reference signal based on first information, and the first information includes at least the following: One item:

The second period of the PSFCH, the first offset value, the period of the SL positioning reference signal, or the offset value of the SL positioning reference signal.
The method according to claim 2, wherein the first terminal determines the resources of the SL positioning reference signal based on the mapping rules of the SL positioning reference signal and PSFCH, including:

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resource are located in the same time slot and have different symbols;

Alternatively, the SL positioning reference signal resource is located in time slot k1, where k1 mod P1=0, and P1 is the first cycle of PSFCH.
The method according to claim 2, wherein the first terminal determines the resources of the SL positioning reference signal based on the mapping rules of the SL positioning reference signal and PSFCH, including:

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resources are located in different time slots;

Alternatively, the SL positioning reference signal is located in time slot k2, where k2 mod P_prs=offset_prs; P_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal.
The method according to claim 3 or 4, wherein,

The resource of the SL positioning reference signal is located on at least one of the following symbols, and the at least one symbol includes: symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The method according to claim 2, wherein the first terminal determines the resources of the SL positioning reference signal based on the mapping rules of the SL positioning reference signal and PSFCH, including:

When the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on the candidate resource of the PSFCH; the candidate resource of the PSFCH is based on the second period of the PSFCH and/or the first offset value. definite.
The method of claim 6, wherein

The second period of the PSFCH is smaller than the first period of the PSFCH;

Alternatively, time slot k3 is a time slot in which PSFCH exists, k3 mod P2=0, where P2 is the second cycle of PSFCH.
The method of claim 6, wherein

The resources of the SL positioning reference signal are located on resources in the SL resource pool other than the first resource of the PSFCH, and the first resource of the PSFCH is determined through the first cycle of the PSFCH.
The method of claim 6, wherein

The resources of the SL positioning reference signal are located on symbol 11 and/or symbol 12.
The method according to claim 1, wherein the resource of the SL positioning reference signal is located in time slot k4, where k4 mod P_prs=offset_prs, the P_prs is the period of the SL positioning reference signal, and the offset_prs is the SL The offset value of the positioning reference signal.
The method of claim 10, wherein:

On the time slot k4, the resources of the SL positioning reference signal do not conflict with the resources of the PSFCH; and/or,

The offset_prs is greater than 0; and/or,

The period of the SL positioning reference signal is an integer multiple of the first period of the PSFCH.
The method according to claim 2, wherein when the mapping rule is a second mapping rule, the first terminal determines the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and PSFCH. resources, including at least one of the following:

The resource of the SL positioning reference signal is located in time slot k5, and the time slot k5 is a time slot in which PSFCH resources exist;

The first terminal determines the resource of the SL positioning reference signal by performing rate matching or puncturing on the PSFCH resource; or,

The interval between the SL positioning reference signal resources and the PSFCH resources is predefined or configured or indicated.
The method according to any one of claims 2-12, wherein,

The mapping rule between the SL positioning reference signal and the PSFCH is predefined, preconfigured or configured.
The method according to any one of claims 2 to 13, wherein the mapping rule is determined according to the first cycle of the PSFCH or the second cycle of the PSFCH.
The method according to any one of claims 1-12, wherein the method further includes:

When the resources of the SL positioning reference signal and the resources of the PSFCH overlap in time on the second resource, the first terminal performs at least one of the following:

If the resource for sending the SL positioning reference signal and the resource for receiving the PSFCH overlap in time, the SL positioning reference signal is sent on the second resource, or the PSFCH is received on the second resource, or based on the SL positioning reference signal and The priority of the PSFCH determines the transmission behavior; or,

If the resource for receiving the SL positioning reference signal overlaps in time with the resource for transmitting the PSFCH, the SL positioning reference signal is received on the second resource or the PSFCH is sent on the second resource, or based on the SL positioning reference signal and the PSFCH The priority determines the transfer behavior.
A method for transmitting side-link SL positioning reference signals, including:

The first terminal determines a third resource of the SL positioning reference signal, and transmits the SL positioning reference signal based on the third resource.
The method according to claim 16, wherein the transmitting the SL positioning reference signal based on the third resource includes:

When the resource for transmitting the SL positioning reference signal and the resource for receiving the SL positioning reference signal on the third resource overlap in time, the first terminal performs at least one of the following:

Send an SL positioning reference signal on the third resource;

Receive an SL positioning reference signal on the third resource;

The transmission behavior is determined based on the priority of sending and receiving SL positioning reference signals.
The method according to claim 16 or 17, wherein the transmitting the SL positioning reference signal based on the third resource includes:

The first terminal sends M1 SL positioning reference signals based on a first condition, where M1 is an integer greater than or equal to 1, and the first condition satisfies at least one of the following:

Select the M1 SL positioning reference signals with the smallest remaining duration in the transmission time window to send;

Select the M1 SL positioning reference signals with the highest priority to send;

Select the M1 SL positioning reference signals with the largest service quality and QoS to send.
The method of claim 18, wherein:

There are M2 SL positioning reference signals to be sent, M2 is greater than M max , the M max is the maximum number of SL positioning reference signals that the first terminal can send, and M1 is less than or equal to M max .
A method for determining side link SL positioning reference signal resources, including:

The network side device or the second terminal sends the configuration information of the physical side link feedback channel PSFCH to the first terminal, where the configuration information of the PSFCH is used to determine the resources of the SL positioning reference signal.
The method of claim 20, wherein:

When the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is non-0, or the first period of the configured PSFCH is N, the resource of the SL positioning reference signal is based on the SL positioning reference Determined by the mapping rules between signals and PSFCH; N is 1 or 2 or 4; or,

When the PSFCH is not configured in the SL resource pool, or the first period of the configured PSFCH is 0, the resource of the SL positioning reference signal is determined based on the first information, and the first information includes at least one of the following:

The second period of the PSFCH, the first offset value, the period of the SL positioning reference signal, or the offset value of the SL positioning reference signal.
The method of claim 21, wherein:

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resource are located in the same time slot and have different symbols;

Alternatively, the SL positioning reference signal resource is located in time slot k1, where k1 mod P1=0, and P1 is the first cycle of PSFCH.
The method of claim 21, wherein:

When the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH resources are located in different time slots;

Alternatively, the SL positioning reference signal is located in time slot k2, where k2 mod P_prs=offset_prs; P_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal.
The method according to claim 22 or 23, wherein,

The resource of the SL positioning reference signal is located on at least one of the following symbols, and the at least one symbol includes: symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The method of claim 21, wherein:

When the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on the candidate resource of the PSFCH; the candidate resource of the PSFCH is based on the second period of the PSFCH and/or the first offset value. definite.
The method of claim 25, wherein:

The second period of the PSFCH is smaller than the first period of the PSFCH;

Alternatively, time slot k3 is a time slot in which PSFCH exists, k3 mod P2=0, where P2 is the second cycle of PSFCH.
The method of claim 25, wherein:

The resources of the SL positioning reference signal are located on resources in the SL resource pool other than the first resource of the PSFCH, and the first resource of the PSFCH is determined through the first cycle of the PSFCH.
The method of claim 25, wherein:

The resources of the SL positioning reference signal are located on symbol 11 and/or symbol 12.
The method of claim 20, wherein:

The resource of the SL positioning reference signal is located in time slot k4, where k4 mod P_prs=offset_prs, the P_prs is the period of the SL positioning reference signal, and the offset_prs is the offset value of the SL positioning reference signal.
The method of claim 29, wherein:

On the time slot k4, the resources of the SL positioning reference signal do not conflict with the resources of the PSFCH; and/or,

The offset_prs is greater than 0; and/or,

The period of the SL positioning reference signal is an integer multiple of the first period of the PSFCH.
The method of claim 21, wherein:

In the case where the mapping rule is the second mapping rule, at least one of the following is satisfied:

The resource of the SL positioning reference signal is located in time slot k5, and the time slot k5 is a time slot in which PSFCH resources exist;

The resource of the SL positioning reference signal is determined by the first terminal by performing rate matching or puncturing on the PSFCH; or,

The interval between the SL positioning reference signal resources and the PSFCH resources is predefined or configured or indicated.
The method according to any one of claims 21-31, wherein,

The mapping rule between the SL positioning reference signal and the PSFCH is predefined, preconfigured or configured.
The method according to any one of claims 21 to 32, wherein the mapping rule is determined according to the first cycle of the PSFCH or the second cycle of the PSFCH.
A device for determining side link SL positioning reference signal resources, including:

A processing module configured to determine the resources of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.
A transmission device for side-link SL positioning reference signals, including:

A processing module used to determine the third resource of the SL positioning reference signal;

A transmission module, configured to transmit the SL positioning reference signal based on the third resource.
A device for determining side link SL positioning reference signal resources, including:

A sending module configured to send configuration information of the physical side link feedback channel PSFCH to the first terminal, where the configuration information of the PSFCH is used by the first terminal to determine resources of the SL positioning reference signal.
A first terminal, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the programs or instructions are executed by the processor, any one of claims 1 to 19 is implemented. The steps of the method for determining side link SL positioning reference signal resources described in the item.
A network-side device, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any one of claims 20 to 33 is implemented. The steps of the method for determining side link SL positioning reference signal resources described in the item.