CN116981077A

CN116981077A - Method, terminal and network side equipment for determining SL positioning reference signal resource

Info

Publication number: CN116981077A
Application number: CN202210399394.7A
Authority: CN
Inventors: 彭淑燕; 王园园
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2023-10-31
Also published as: WO2023198173A1

Abstract

The application discloses a method, a terminal and network side equipment for determining SL positioning reference signal resources, which belong to the technical field of communication, and the method for determining SL positioning reference signal resources in the embodiment of the application comprises the following steps: the first terminal determines the resources of the SL positioning reference signal based on configuration information of the physical side link feedback channel PSFCH.

Description

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

Technical Field

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

Background

A long term evolution (Long Term Evolution, LTE) system supports Sidelink (SL) transmission, i.e., data transmission between terminals directly on the physical layer. LTE SL is broadcast based, but is not suitable for other higher-level V2X services, although it can be used to support basic security class communications for internet of vehicles (vehicle to everything, V2X). A New air interface (NR) system will support more advanced SL transmission designs, such as unicast, multicast or multicast, so that more comprehensive service types can be supported. In a mobile communication system, positioning a terminal is one of important functions. Therefore, there is increasing research on SL localization in NR systems. SL positioning typically needs to be implemented based on reference signals.

Currently, the reference signals for SL include, for example, SSB, DMRS, DMRS, CSI-RS, PTRS, etc. The residual signal is limited to the frequency domain resource range of the PSSCH except for the SSB, and thus the frequency domain range available for the above-mentioned reference signal is small. In positioning, the larger the bandwidth of a reference signal used for positioning, the higher the positioning accuracy. The positioning accuracy requirement in the actual positioning scene is generally higher, and the amount of information required to be carried by positioning is more. Current solutions may not meet positioning requirements. Therefore, how to allocate the resources of the SL positioning reference signal to meet the positioning requirement is a technical problem to be solved for those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a method, a terminal and network side equipment for determining SL positioning reference signal resources, which can solve the problem of how to allocate the SL positioning reference signal resources to meet positioning requirements.

In a first aspect, a method for determining SL positioning reference signal resources is provided, including:

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

In a second aspect, a method for transmitting a side link SL positioning reference signal 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.

In a third aspect, a method for determining SL positioning reference signal resources is provided, including:

the network side equipment or the second terminal sends configuration information of a physical side link feedback channel PSFCH to the first terminal, wherein the configuration information of the PSFCH is used for the first terminal to determine resources of SL positioning reference signals.

In a fourth aspect, an apparatus for determining SL positioning reference signal resources by a side link is provided, including:

and the processing module is used for determining the resource of the SL positioning reference signal based on the configuration information of the physical side chain feedback channel PSFCH.

In a fifth aspect, a transmission apparatus for a side link SL positioning reference signal is provided, including:

a processing module, configured to determine a third resource of the SL positioning reference signal;

and the transmission module is used for transmitting the SL positioning reference signal based on the third resource.

In a sixth aspect, an apparatus for determining SL positioning reference signal resources by a side link is provided, including:

and the sending module is used for sending configuration information of a physical side link feedback channel PSFCH to the first terminal, wherein the configuration information of the PSFCH is used for the first terminal to determine the resource of the SL positioning reference signal.

In a seventh aspect, there is provided a first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first or second aspect.

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

In a ninth aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to the third aspect.

In a tenth aspect, a network side device is provided, including a processor and a communication interface, where the communication interface is configured to send configuration information of a physical side link feedback channel PSFCH to a first terminal, where the configuration information of the PSFCH is used by the first terminal to determine a resource of an SL positioning reference signal.

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

In a twelfth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first or second aspect, or performs the steps of the method according to the third aspect.

In a thirteenth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first or second aspect, or to implement the method according to the third aspect.

In a fourteenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to implement the method according to the first, second or third aspects.

In the embodiment of the application, since on SL, the PSFCH is a resource reserved periodically in the resource pool, and the frequency domain resource available to the PSFCH is the bandwidth of the entire resource pool. If the first terminal determines the resource of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the available frequency domain resource bandwidth of the SL positioning reference signal may be the bandwidth of the resource pool. The positioning accuracy of the SL positioning reference signal can be improved, because the greater the bandwidth of the SL positioning reference signal is, the higher the positioning accuracy is.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of channel resources according to an embodiment of the present application;

FIG. 3 is a second schematic diagram of channel resources according to an embodiment of the present application;

fig. 4 is a flowchart of a method for determining SL positioning reference signal resources according to an embodiment of the present application;

fig. 5 is one of resource diagrams of SL positioning reference signals according to an embodiment of the present application;

fig. 6 is a second exemplary resource diagram of an SL positioning reference signal according to an embodiment of the present application;

fig. 7 is a third exemplary resource diagram of an SL positioning reference signal according to an embodiment of the present application;

fig. 8 is a fourth resource diagram of an SL positioning reference signal according to an embodiment of the present application;

fig. 9 is a fifth embodiment of a resource diagram of an SL positioning reference signal according to the present application;

fig. 10 is a sixth embodiment of a resource diagram of an SL positioning reference signal according to the present application;

fig. 11 is a second flowchart of a method for determining SL positioning reference signal resources according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of an apparatus for determining SL positioning reference signal resources according to an embodiment of the present application;

fig. 13 is a second schematic structural diagram of an apparatus for determining SL positioning reference signal resources according to an embodiment of the present application;

Fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic hardware structure of a first terminal according to an embodiment of the present application;

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

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in the NR system is described as an example, and the specific type of the base station is not limited.

The LTE system supports a Sidelink (SL) from release 12 for direct data transmission between terminals, without requiring a network device. The NR SL defined in the R16 version includes the following channels:

physical side link control channel (physical sidelink control channel, PSCCH); physical side link shared channel (physical sidelink shared channel, PSSCH); a physical side link broadcast channel (physical sidelink broadcast channel, PSBCH); physical measurement side chain feedback information (physical sidelink discovery feedback channel, PSFCH).

Wherein, PSSCH uses sub-channel as unit to allocate resource, and uses continuous resource allocation mode in frequency domain. The time domain resource of the PSCCH is the number of symbols configured by a high layer, the frequency domain size is a parameter configured by the high layer, the frequency domain resource size of the PSCCH is smaller than or equal to the size of one sub-channel, and the PSCCH is positioned in the range of the lowest sub-channel of the PSSCH. An example diagram is shown in fig. 2.

The resources available for the PSFCH channel are determined on the SL resource pool according to a period (e.g., denoted as p_psfch) parameter. The terminal assumes that there are resources of the PSFCH in the resource slot k in the SL resource pool. Where k mod p_psfch=0, then the terminal considers that there are PSFCH resources on slot k. The PSFCH channel occupies 1 or 2 symbols, located at the last 2 nd and 3 rd symbols of the slot. The previous symbol of the PSFCH is a symbol for AGC adjustment (the symbol for AGC adjustment is a repetition of the PSFCH symbol). The latter symbol of the PSFCH is the interval Gap. Wherein the R16 version utilizes the parameter sl-PSFCH-Period-R16 to configure the Period. As shown in fig. 3, a schematic diagram of channel distribution of one physical resource block (Physical Resource Block, PRB) is shown in fig. 3.

The PSFCH resources consist of time domain resources, frequency domain resources, and code domain resources. The code domain adopts ZC sequences, and the code sequence generation depends on Cyclic Shift (CS), u and v, wherein u and v are respectively the group identification and the sequence identification of the ZC sequences. The PSFCH resource carries 1bit information bit for ACK/NACK feedback.

The PSFCH resources have a fixed mapping relationship with the PSCCH and/or PSSCH. One or more PSCCH and/or PSSCH occasions (occlusions) may correspond to one PSFCH ocction. One PSCCH/PSSCH resource may correspond to multiple PSFCH resources. When the terminal performs PSFCH transmission, a plurality of PSFCH resources corresponding to the PSCCH/PSSCH resources are determined according to the received PSCCH/PSSCH resources, and a transmitted PSFCH resource is determined according to the terminal ID.

NR SL resource allocation mode:

NR V2X defines two resource allocation modes, one is mode1, scheduling resources for network side devices (e.g., base stations); the other is mode2, the terminal itself decides what resources to use for transmission. The resource information may be a broadcast message from the network side device or preconfigured information. The terminal may be mode1 and/or mode2 if it is operating within the range of the network side device and has an RRC connection with the network side device, and the terminal may only be operating in mode2 if it is operating within the range of the network side device but has no RRC connection with the network side device. If the terminal is out of the range of the network side equipment, the terminal can only work in mode2, and V2X transmission is carried out according to the preconfigured information.

For mode 2, the specific operation is as follows: 1) After the TX terminal is triggered by the resource selection, first, determining a resource selection window, where the lower boundary of the resource selection window is at T1 time after the triggering of the resource selection, and the upper boundary of the resource selection is at T2 time after the triggering, where T2 is a value selected by the terminal implementation manner within a packet delay budget (packet delay budget, PDB) of its TB transmission, and T2 is not earlier than T1. 2) Before the terminal selects the resource, it needs to determine an alternative resource set (candidate resource set) for the resource selection, and compares the RSRP measured on the resource in the resource selection window with a corresponding RSRP threshold, and if the RSRP is lower than the RSRP threshold, the resource may be included in the alternative resource set. 3) After the resource set is determined, the terminal randomly selects transmission resources from the alternative resource set. In addition, the terminal may reserve transmission resources for the next transmission at this time.

And NR V2X supports chained resource reservation, that is, one SCI may reserve current resources, at most two resources may be reserved additionally, and in the next resource, two reserved resources may be indicated. Within the selection window, resources may be reserved continuously in a dynamic reservation manner.

The method of the embodiment of the application is used for SL positioning, PSFCH is a resource reserved in a resource pool periodically, and available frequency domain resource of PSFCH is the bandwidth of the whole resource pool; PSSCH, PSCCH, DMRS, CSI-RS, PTRS, etc. are limited to the bandwidth of the SL PSSCH (range less than or equal to the bandwidth of the resource pool). In positioning, the larger the bandwidth of the positioning reference signal is, the higher the positioning accuracy is. Therefore, the resource of the SL positioning reference signal is determined based on the configuration information of the PSFCH, the positioning precision of the SL positioning reference signal is improved, and the complexity of the design of the SL positioning reference signal is reduced as much as possible.

In the embodiment of the application, the SL positioning reference signal can comprise: SL positioning reference signals (Position Reference Signal, PRS), and extended SL reference signals for positioning, e.g.: side link synchronization signal block S-SSB, SL channel state 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 the SL positioning reference signal resource provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

Fig. 4 is a flowchart of a method for determining SL positioning reference signal resources according to an embodiment of the present application. As shown in fig. 4, the method provided in this embodiment includes:

step 101, the first terminal determines the resource of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

Specifically, the configuration information of the PSFCH may be predefined, preconfigured (for example, factory configuration), configured by a network side device, or configured by a second terminal (for example, configured by the second terminal 1 to the first terminal 2), and the configuration information of the PSFCH may include candidate resource information, period, and other information of the PSFCH, and the first terminal may perform resource multiplexing according to multiple manners based on the configuration information of the PSFCH, to determine the resource of the SL positioning reference signal.

Alternatively, in the method of this embodiment, the configuration or indication information may be configured by radio resource control (Radio Resource Control, RRC), medium access layer control unit (Medium Access Control Control Element, MAC CE), downlink control information (Downlink Control Information, DCI), PC5-RRC (RRC of PC5 interface), side link control information (Sidelink Control Information, SCI).

The resource of the SL positioning reference signal may be a resource actually used by the SL positioning reference signal or a resource available to the SL positioning reference signal. The resources may include time domain resources, frequency domain resources, or power resources, among others.

Since on SL, the PSFCH is a resource reserved periodically in the resource pool, and the frequency domain resource available to the PSFCH is the bandwidth of the entire resource pool. If the first terminal determines the resource of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the available frequency domain resource bandwidth of the SL positioning reference signal may be the bandwidth of the resource pool. The positioning accuracy of the SL positioning reference signal can be improved, because the greater the bandwidth of the SL positioning reference signal is, the higher the positioning accuracy is.

Alternatively, step 101 may be implemented in several ways:

mode 1: in the case that the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is not 0, or the first period of the configured PSFCH is N, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH;

alternatively, N is 1 or 2 or 4.

In particular, the first period of the PSFCH may be a period defined in a previous protocol version, e.g., a PSFCH period defined in the R16, R17 version, and the second period of the PSFCH may be a newly defined PSFCH period, e.g., denoted as an R18PSFCH period.

If the configured periodicity value = 0, then it indicates that no PSFCH resources are contained; if the period value is 1,2,4 (for example, the period value is in the range of 0,1,2, 4), it indicates that there are PSFCH resources in the resource pool. If the periodicity value=4, it means that there is one PSFCH available resource per 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 not 0, or the first period of the configured PSFCH is N, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH.

Optionally, the mapping rules are parameters that are predefined, preconfigured or configured (which may be network-side devices or other terminals).

For example: the protocol is predefined as a first mapping rule; alternatively, the protocol is predefined as a second mapping rule;

optionally, the mapping rule is determined according to a first period of the PSFCH or a second period of the PSFCH.

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

In the above embodiment, in the case that the PSFCH is configured, the resource of the SL positioning reference signal may be determined based on the mapping rule of the SL positioning reference signal and the PSFCH, and the available frequency domain resource bandwidth of the SL positioning reference signal may be the bandwidth of the resource pool. The positioning accuracy of the SL positioning reference signal can be improved.

Optionally, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH, which may be implemented in the following ways:

under the condition that the mapping rule is a first mapping rule, the SL positioning reference signal and the PSFCH resource are positioned in the same time slot and are in different symbols;

alternatively, the resource of the SL positioning reference signal is located in slot k1, where k1 mod p1=0, and P1 is the first period of the PSFCH.

Specifically, in the case that the mapping rule is the first mapping rule, the SL positioning reference signal and the PSFCH are located at the same slot, and the symbols are not overlapped;

alternatively, the SL positioning reference signal is on slot k1 of slot k1 mod p1=0. Slot k1 is a resource in the SL resource pool, and P is the first period of the PSFCH.

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

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

Under the condition that the mapping rule is a first mapping rule, the SL positioning reference signal and the PSFCH resource are positioned in different time slots;

alternatively, the SL positioning reference signal is located in a slot k2, where k2mod 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, in the case where the mapping rule is the first mapping rule, the SL positioning reference signal is on a different slot than the PSFCH.

For example, it is applicable in the case where the period of configuring the SL positioning reference signal is smaller than the first period or the second period of the PSFCH.

The SL positioning reference signal is on slots of slot k2 mode p_prs=offset_prs. Wherein p_prs is the period of the SL positioning reference signal, and offset_prs is the offset value of the SL positioning reference signal. .

Illustratively, 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, frequency domain resources that the SL positioning reference signal can occupy are shown in the figure.

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

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

In the above embodiment, under the condition of adopting the first mapping rule, the resource of the SL positioning reference signal can be adopted in multiple modes, so that the flexibility is high, and the requirements of multiple scenes can be met.

Optionally, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH, which may be implemented in the following manner:

under the condition that the mapping rule is a first mapping rule, the resource of the SL positioning reference signal is positioned on the candidate resource of the PSFCH; the candidate resources of the PSFCH are determined based on the second period and/or the first offset value of the PSFCH.

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

A second period of the PSFCH, e.g., denoted as the R18 PSFCH period, is configured, and the SL positioning reference signal is transmitted in a candidate resource of the PSFCH.

Optionally, the candidate resource of the PSFCH is determined according to the second period and/or the first offset value of the PSFCH.

Wherein the first offset value may be an offset value corresponding to a second period of the PSFCH.

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

alternatively, slot k3 is the slot where the PSFCH is present, k3mod p2=0, where P2 is the second period of the PSFCH.

Specifically, the first terminal may assume that there is a PSFCH on slot k3, slot k3 mod p2=0, P2 being the second period of the PSFCH.

Optionally, the resource of the SL positioning reference signal is located on a resource of the SL resource pool other than a first resource of the PSFCH, the first resource of the PSFCH being determined by a first period of the PSFCH.

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

In particular, resources of the R16/R17PSFCH may be semi-statically excluded. For example, R18 PSFCH period=1, R16/R17PSFCH period=4; the SL positioning reference signal can be transmitted at slot k mod 4 = 1,2, 3.

For example, R18 PSFCH period=2, R16/R17PSFCH period=4; the SL positioning reference signal can be transmitted at the position of slot k mod 2 = 1.

Illustratively, as shown in fig. 8, the network side device and/or the second terminal configures a second period of the PSFCH, e.g., an R18PSFCH period.

The network side device and/or the second terminal configures a first period of the PSFCH, e.g., an NR R16/R17 PSFCH period, optionally the first candidate resource of the R16/R17 PSFCH is a subset of the second candidate resource of the R18 PSFCH. Wherein, the PSFCH of R16 version is used for transmitting HARQ feedback information; the PSFCH of the R17 version may be used to transmit side information, such as collision (collision) information.

The first terminal determines that the resource available for the SL positioning reference signal is the resource of the first candidate resource of the PSFCH candidate resource which is not the R16/R17 PSFCH according to the configuration information of the R18PSFCH and the configuration information of the R16/R17 PSFCH.

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

Alternatively, the first terminal considers the available position of R16/R17 PSFCH to be slot k of slot k mode 2=0.

As shown in fig. 8, the SL positioning reference signal may utilize a PSFCH structure configured for the resource pool, reducing design complexity of the SL positioning reference signal. The SL positioning reference signal corresponds to 4 symbols at the slot end, and the available resource of the SL positioning reference signal can be regarded as the resource of the whole frequency domain of the resource pool in the frequency domain. For the SL positioning reference signal, the larger the transmissible bandwidth, the better the positioning accuracy can be. The resources represented by SL PRS in fig. 8 are available resources for SL positioning reference signals or are actually occupied resources.

In an embodiment, the resource of the SL positioning reference signal is located in the 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, the resource of the SL positioning reference signal does not collide with the resource of the PSFCH in the slot k 4; and/or the number of the groups of groups,

offset_prs is greater than 0; and/or the number of the groups of groups,

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

In particular, the period (e.g., denoted as p_prs) and/or the offset value (offset_prs) of the SL positioning reference signal may be predefined, preconfigured or configured; alternatively, the SL positioning reference signal may be configured independently, and the configuration achieves that the SL positioning reference signal is time division multiplexed with the PSFCH.

Optionally, the first terminal expects that there is a SL positioning reference signal resource on slot k4 of slot k4 mod p_prs=offset_prs.

Optionally, the first terminal expects not to collide with the PSFCH resource at slot k 4.

Illustratively, 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, but the resource configuration of TDM with the PSFCH position is determined by the configuration to ensure that the SL positioning reference signal candidate resource does not collide with the PSFCH candidate resource.

As shown in fig. 9, when the period=2 of the SL positioning reference signal, the first period=2 of the psfch, the psfch is transmitted at a position of slot k mod 2=0; SL positioning reference signals are transmitted at slot k mod 2=1.

In the above embodiment, the period and offset value of the SL positioning reference signal are directly configured. And the resource of the SL positioning reference signal in a plurality of modes is adopted, so that the flexibility is high, and the requirements of various scenes can be met.

Optionally, in the case that the mapping rule is the second mapping rule, the first terminal determines, based on the mapping rule of the SL positioning reference signal and the PSFCH, a resource of the SL positioning reference signal, including at least one of:

the resource of the SL positioning reference signal is positioned on a time slot k5, and the time slot k5 is the time slot with PSFCH resource;

the first terminal determines the resource of the SL positioning reference signal by carrying out rate matching or punching on PSFCH resources; or alternatively, the first and second heat exchangers may be,

the interval between the resources of the SL positioning reference signal and the PSFCH resources is predefined or configured or indicated. Wherein the PSFCH resource is an actually occupied PSFCH resource or an available PSFCH resource.

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

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

Optionally, the PSFCH is rate matched (rate matching), or punctured (puncturing), to determine the resource of the SL positioning reference signal. However, the performance of the SL positioning reference signal may be limited.

The gap between the resources of the SL positioning reference signal and the PSFCH resources is predefined, configured or indicated, the gap being for reducing interference between the SL positioning reference signal and the PSFCH. The gap is a guard bandwidth on a frequency domain; or a guard interval in the time domain.

Illustratively, the configured SL positioning reference signal is located at a PSFCH candidate time resource. The SL positioning reference signal rate matches or punctures the PSFCH.

As shown in fig. 10, the first period of the PSFCH is 2. The A/N is the location where the PSFCH actually sends. In the PSFCH resource, the non-A/N position can be used for the transmission of SL positioning reference signals.

In the above embodiment, under the condition of adopting the second mapping rule, the resource of the SL positioning reference signal can be adopted in multiple modes, so that the flexibility is high, and the requirements of multiple scenes can be met.

Mode 2: in case that no PSFCH is configured in the SL resource pool or the configured PSFCH has a first period of 0, the first terminal determines the resource of the SL positioning reference signal based on first information, the first information including 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.

In this mode, there is no PSFCH configuration, and the resources of SL positioning reference signals can be independently configured,

In the above embodiment, in the case where the PSFCH is not configured, the resource of the SL positioning reference signal may be configured based on at least one of the second period, the first offset value, the period of the SL positioning reference signal, or the offset value of the SL positioning reference signal of the PSFCH, so that the positioning accuracy of the SL positioning reference signal may be improved as much as possible.

Optionally, the method further comprises:

in case the resources of the SL positioning reference signal overlap in time with the resources of the PSFCH on the second resources, the first terminal performs at least one of:

if the resource for transmitting the SL positioning reference signal overlaps with the resource for receiving the PSFCH in time, transmitting the SL positioning reference signal on the second resource, or receiving the PSFCH on the second resource, or determining the transmission behavior based on the priority of the SL positioning reference signal and the PSFCH; or alternatively, the first and second heat exchangers may be,

if the resource receiving the SL positioning reference signal overlaps in time with the resource transmitting the PSFCH, then the SL positioning reference signal is received on the second resource or the PSFCH is transmitted on the second resource, or the transmission behavior is determined based on the priorities of the SL positioning reference signal and the PSFCH.

Specifically, in the case where the transmission of the SL positioning reference signal overlaps in time with the PSFCH, if the first terminal transmits the SL positioning reference signal overlapping with the received PSFCH, which is an effect on the transmission of the first terminal in the half duplex multiplexing manner, the first terminal may perform at least one of the following:

SL positioning reference signal prioritization;

alternatively, PSFCH takes precedence;

or determining whether to transmit the SL positioning reference signal or receive the PSFCH according to the priority of the SL positioning reference signal and the PSFCH; transmitting the SL positioning reference signal if the priority of transmitting the SL positioning reference signal is higher than the priority of receiving the PSFCH; otherwise, PSFCH is received.

If the UE receives SL PRS and transmits PSFCH overlapping, which is the case with transmission of the first terminal in a half-duplex multiplexing mode, the first terminal may perform at least one of:

SL positioning reference signal prioritization;

alternatively, PSFCH takes precedence;

or determining whether to receive the SL positioning reference signal or transmit the PSFCH according to the priority of the SL positioning reference signal and the PSFCH; receiving the SL PRS if the priority of receiving the SL positioning reference signal is higher than the priority of transmitting the PSFCH; and otherwise, sending PSFCH.

In the above embodiment, in the case that the resource of the SL positioning reference signal overlaps with the resource of the PSFCH in time, the transmission behavior may be determined in various manners, which is more flexible.

In an embodiment of the present application, a method for transmitting a side link SL positioning reference signal is further provided, including:

The third resource for determining the SL positioning reference signal may be any of the methods described above, or may be any other method, which is not limited by the embodiments of the present application.

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

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

transmitting a SL positioning reference signal on a third resource;

receiving SL positioning reference signals on a third resource;

the transmission behaviour is determined based on the priorities of transmitting and receiving SL positioning reference signals.

Specifically, if the first terminal transmits the SL positioning reference signal and the first terminal receives the SL positioning reference signal to overlap in time, which is the case with the transmission of the first terminal being affected in the half duplex multiplexing mode, the first terminal performs at least one of the following:

Preferentially transmitting SL positioning reference signals;

or preferentially receiving the SL positioning reference signals;

or determining whether to transmit or receive the SL positioning reference signals according to the priority; transmitting the SL positioning reference signal if the priority of transmitting the SL positioning reference signal is higher than the priority of receiving the SL positioning reference signal; otherwise, receiving SL positioning reference signals.

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

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

selecting M1 SL positioning reference signals with the smallest residual duration in a transmission time window to transmit;

selecting M1 SL positioning reference signals with highest priority to transmit;

and selecting M1 SL positioning reference signals with the maximum quality of service QoS to transmit.

Optionally, the number of SL positioning reference signals to be transmitted is M2, M2 being greater than M _max The M is _max For a maximum number of SL positioning reference signals that can be sent by the first terminal, the M1 is less than or equal to M _max 。

For example, the scenario is: m2 SL positioning reference signals to be transmitted; wherein M2>M _max ，M _max Is the maximum number of SL positioning reference signals that the first terminal can transmit (e.g., limited by power), and M1 positioning reference signals are selected from M2 SL positioning reference signals to transmit M1 less than or equal to M _max 。

Specifically, the first terminal may select M1 SL positioning reference signal transmissions according to priority, qoS, delay, or the like, and at least one of the following is satisfied:

the first terminal selects M1 SL positioning reference signals with the minimum residual time delay to transmit. For example, a transmission time window may be set for triggering multiple target first terminals to assist the first terminals to transmit the SL positioning reference signals, and the first terminal may select M1 SL positioning reference signals with the smallest remaining duration in the transmission time window to transmit.

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

Fig. 11 is a flowchart of a method for determining a positioning reference signal resource of a side link SL according to an embodiment of the present application. As shown in fig. 4, the method provided in this embodiment includes:

in step 201, the network side device or the second terminal sends configuration information of a physical side link feedback channel PSFCH to the first terminal, where the configuration information of the PSFCH is used for the first terminal to determine resources of the SL positioning reference signal.

Optionally, in the case that the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is not 0, or the first period of the configured PSFCH is N, the resource of the SL positioning reference signal is determined based on the mapping rule of the SL positioning reference signal and the PSFCH; n is 1 or 2 or 4; or alternatively, the first and second heat exchangers may be,

In the case that no PSFCH is configured in the SL resource pool, or the configured PSFCH has a first period of 0, the resource of the SL positioning reference signal is determined based on first information, which includes at least one of:

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

Optionally, in the case that the mapping rule is the first mapping rule, the SL positioning reference signal and the resource of the PSFCH are located in the same slot and are of different symbols;

Optionally, in the case that the mapping rule is the first mapping rule, the SL positioning reference signal and the resource of the PSFCH are located in different timeslots;

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

Optionally, in the case that the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on a candidate resource of the PSFCH; the candidate resources of the PSFCH are determined based on a second period of the PSFCH and/or the first offset value.

alternatively, the time slot k3 is a time slot in which the PSFCH exists, and k3 mod p2=0, where P2 is the second period of the PSFCH.

Optionally, the resource of the SL positioning reference signal is located in a slot k4, where k4 mod p_prs=offset_prs, where 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, on the time slot k4, the resource of the SL positioning reference signal does not collide with the resource of the PSFCH; and/or the number of the groups of groups,

the offset_prs is greater than 0; and/or the number of the groups of groups,

Optionally, in the case that 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 positioned on a time slot k5, wherein the time slot k5 is a time slot with PSFCH resource;

the resource of the SL positioning reference signal is determined by the first terminal through the rate matching or punching mode of the PSFCH; or alternatively, the first and second heat exchangers may be,

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

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

The specific implementation process and technical effect of the method of the embodiment are the same as those of the first terminal side method embodiment, and specific reference may be made to the detailed description of the first terminal side method embodiment, which is not repeated herein.

The method for determining the positioning reference signal resource of the side link SL provided by the embodiment of the present application, the execution body may be a device for determining the positioning reference signal resource of the SL. In the embodiment of the present application, the method for determining the SL positioning reference signal resource of the side link is taken as an example by using the device for determining the SL positioning reference signal resource as an example, which is provided by the embodiment of the present application.

Fig. 12 is a schematic structural diagram of an apparatus for determining SL positioning reference signal resources according to an embodiment of the present application. As shown in fig. 12, the apparatus for determining SL positioning reference signal resources provided in this embodiment includes:

a processing module 210, configured to determine the resource of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH.

Optionally, in the case that the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is not 0, or the first period of the configured PSFCH is N, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH; n is 1 or 2 or 4; or alternatively, the first and second heat exchangers may be,

in the case that no PSFCH is configured in the SL resource pool, or the configured PSFCH has a first period of 0, the first terminal determines the resource of the SL positioning reference signal based on first information, the first information including at least one of:

the offset_prs is greater than 0; and/or the number of the groups of groups,

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

determining the resource of the SL positioning reference signal by carrying out rate matching or punching on the PSFCH resource; or alternatively, the first and second heat exchangers may be,

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

The embodiment of the application also provides a device for transmitting the side link SL positioning reference signal, which comprises:

and the processing module is used for determining a third resource of the SL positioning reference signal and transmitting the SL positioning reference signal based on the third resource.

Optionally, the processing module is specifically configured to:

In case the resource on the third resource that transmits the SL positioning reference signal overlaps in time with the resource that receives the SL positioning reference signal, performing at least one of:

transmitting a SL positioning reference signal on the third resource;

receiving SL positioning reference signals on the third resource;

Optionally, the processing module is specifically configured to:

The apparatus of this embodiment may be used to execute the method of any one of the foregoing first terminal side method embodiments, and specific implementation procedures and technical effects of the apparatus are the same as those in the first terminal side method embodiment, and specific details of the first terminal side method embodiment may be referred to in the detailed description of the first terminal side method embodiment and will not be repeated herein.

Fig. 13 is a second schematic structural diagram of an apparatus for determining SL positioning reference signal resources according to an embodiment of the present application. As shown in fig. 13, the apparatus for determining SL positioning reference signal resources provided in this embodiment includes:

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

the offset_prs is greater than 0; and/or the number of the groups of groups,

The apparatus of the present embodiment may be used to execute the method of any one of the foregoing network side method embodiments, and specific implementation procedures and technical effects of the apparatus are the same as those of the network side method embodiment, and specific details of the network side method embodiment may be referred to in the detailed description of the network side method embodiment and will not be repeated herein.

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

The device for determining the SL positioning reference signal resource provided by the embodiment of the present application can implement each process implemented by the embodiments of the method of fig. 4 to fig. 10, and achieve the same technical effect, so that repetition is avoided, and no description is repeated here.

Optionally, as shown in fig. 14, the embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402, where the memory 1402 stores a program or instructions executable on the processor 1401, for example, when the communication device 1400 is a first terminal, the program or instructions, when executed by the processor 1401, implement the steps of the above-mentioned method embodiment for determining the positioning reference signal resource of the side link SL, and achieve the same technical effects. When the communication device 1400 is a network side device, the program or the instruction, when executed by the processor 1401, implements the steps of the method embodiment for determining the positioning reference signal resource of the side link SL, and the same technical effects can be achieved, so that repetition is avoided and detailed description is omitted.

The embodiment of the application also provides a first terminal which comprises a processor and a communication interface, wherein the processor is used for determining the resource of the SL positioning reference signal based on the configuration information of the PSFCH. The first terminal embodiment corresponds to the first terminal side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the first terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 15 is a schematic hardware structure of a first terminal for implementing an embodiment of the present application.

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

Those skilled in the art will appreciate that first terminal 1000 can also include a power source (e.g., a battery) for powering the various components, which can be logically coupled to processor 1010 by a power management system for performing functions such as managing charge, discharge, and power consumption by the power management system. The first terminal structure shown in fig. 15 is not limited to the first terminal, and the first terminal may include more or less components than those shown, or may combine some components, or may be arranged in different components, which will not be described herein.

It should be appreciated that in embodiments of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, where the graphics processor 10041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 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 at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

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

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area storing programs or instructions, which may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and a second storage area storing data. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. Including high-speed random access Memory, and may also include non-volatile Memory, where the non-volatile Memory may be Read-Only Memory (ROM), programmable ROM (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable EPROM (EEPROM), or flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 1009 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1010 may include one or more processing units; alternatively, the processor 1010 may integrate an application processor that primarily processes operations involving an operating system, a user interface, and applications or instructions, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

The processor 1010 is configured to determine a resource of the SL positioning reference signal based on configuration information of the physical sidelink feedback channel PSFCH.

Since on SL, the PSFCH is a resource reserved periodically within the resource pool, and the frequency domain resource available to the PSFCH is the bandwidth of the entire resource pool. If the first terminal determines the resource of the SL positioning reference signal based on the configuration information of the physical side link feedback channel PSFCH, the available frequency domain resource bandwidth of the SL positioning reference signal may be the bandwidth of the resource pool. The positioning accuracy of the SL positioning reference signal can be improved, because the greater the bandwidth of the SL positioning reference signal is, the higher the positioning accuracy is.

the offset_prs is greater than 0; and/or the number of the groups of groups,

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

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, the processor 1010 is specifically configured to:

transmitting a SL positioning reference signal on the third resource;

receiving SL positioning reference signals on the third resource;

Optionally, the processor 1010 is specifically configured to:

The embodiment of the application also provides a second terminal, which comprises a processor and a communication interface, wherein the communication interface is used for sending configuration information of a physical side link feedback channel PSFCH to the first terminal, and the configuration information of the PSFCH is used for determining resources of the SL positioning reference signal by the first terminal. The second terminal embodiment corresponds to the second terminal method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the second terminal embodiment, and the same technical effects can be achieved. Alternatively, the second terminal may be implemented using the above-described structure of the first terminal.

The embodiment of the application also provides network side equipment which comprises a processor and a communication interface, wherein the communication interface is used for sending configuration information of a physical side link feedback channel PSFCH to a first terminal, and the configuration information of the PSFCH is used for the first terminal to determine resources of SL positioning reference signals. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. 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 a radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information via the antenna 71, and transmits the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes information to be transmitted, and transmits the processed information to the radio frequency device 72, and the radio frequency device 72 processes the received information and transmits the processed information through the antenna 71.

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

The baseband device 73 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 16, where one chip, for example, a baseband processor 75, is connected to the memory 75 through a bus interface, so as to call a program in the memory 75 to perform the network device operation shown in the above method embodiment.

The network side equipment of the baseband apparatus 73 may further include a network interface 76 for interacting with the radio frequency apparatus 72, such as a common public radio interface (common public radio interface, abbreviated as CPRI).

Specifically, the network side device 700 of the embodiment of the present application further includes: instructions or programs stored in the memory 75 and capable of running on the processor 75, the processor 75 invokes the instructions or programs in the memory 75 to perform the method performed by the modules shown in fig. 13 and achieve the same technical effects, and are not repeated here.

The embodiment of the present application also provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction implements each process of the above embodiment of the method for determining SL positioning reference signal resources when executed by a processor, and the same technical effects can be achieved, so that repetition is avoided, and no detailed description is given here.

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

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the method embodiment for determining the SL positioning reference signal resource are realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement the respective processes of the above-mentioned method embodiment for determining SL positioning reference signal resources, and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: the method comprises the steps of determining the SL positioning reference signal resource by the first terminal and the network side equipment, wherein the first terminal can be used for executing the steps of the method for determining the SL positioning reference signal resource by the network side equipment. Alternatively, the communication system may employ a system architecture as shown in fig. 1.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods 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.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for determining a side link SL positioning reference signal resource, comprising:

2. The method of claim 1, wherein the first terminal determining the resource of the SL positioning reference signal based on configuration information of the physical side link feedback channel PSFCH comprises:

in the case that a PSFCH is configured in a SL resource pool, or a first period of the configured PSFCH is not 0, or a first period of the configured PSFCH is N, the first terminal determines a resource of the SL positioning reference signal based on a mapping rule of the SL positioning reference signal and the PSFCH; n is 1 or 2 or 4; or alternatively, the first and second heat exchangers may be,

3. The method of claim 2, wherein the first terminal determining the resource of the SL positioning reference signal based on a mapping rule of the SL positioning reference signal and a PSFCH comprises:

4. The method of claim 2, wherein the first terminal determining the resource of the SL positioning reference signal based on a mapping rule of the SL positioning reference signal and a PSFCH comprises:

5. The method according to claim 3 or 4, wherein,

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

6. The method of claim 2, wherein the first terminal determining the resource of the SL positioning reference signal based on a mapping rule of the SL positioning reference signal and a PSFCH comprises:

In the case that the mapping rule is the first mapping rule, the resource of the SL positioning reference signal is located on a candidate resource of the PSFCH; the candidate resources of the PSFCH are determined based on a second period of the PSFCH and/or the first offset value.

7. The method of claim 6, wherein the step of providing the first layer comprises,

the second period of the PSFCH is less than the first period of the PSFCH;

8. The method of claim 6, wherein the step of providing the first layer comprises,

the resources of the SL positioning reference signal are located on resources of the SL resource pool other than the first resource of the PSFCH, which is determined by the first period of the PSFCH.

9. The method of claim 6, wherein the step of providing the first layer comprises,

the resources of the SL positioning reference signal are located on symbol 11 and/or symbol 12.

10. The method of claim 1, wherein the resource of the SL positioning reference signal is located in a time slot k4, wherein k4 mod p_prs = offset_prs, wherein p_prs is a period of the SL positioning reference signal and wherein offset_prs is an offset value of the SL positioning reference signal.

11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,

on the time slot k4, the resource of the SL positioning reference signal does not collide with the resource of the PSFCH; and/or the number of the groups of groups,

the offset_prs is greater than 0; and/or the number of the groups of groups,

12. The method according to claim 2, wherein in case the mapping rule is a second mapping rule, the first terminal determines the resource of the SL positioning reference signal based on the mapping rule of the SL positioning reference signal and the PSFCH, comprising at least one of:

the first terminal determines the resource of the SL positioning reference signal by carrying out rate matching or punching on the PSFCH resource; or alternatively, the first and second heat exchangers may be,

13. The method according to any one of claims 2 to 12, wherein,

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

14. The method according to any of claims 2-13, wherein the mapping rule is determined based on a first period of the PSFCH or a second period of the PSFCH.

15. The method according to any one of claims 1-12, further comprising:

16. A method for transmitting a side link SL positioning reference signal, comprising:

17. The method of claim 16, wherein transmitting the SL positioning reference signal based on the third resource comprises:

in case the resource on the third resource that transmits the SL positioning reference signal overlaps in time with the resource that receives the SL positioning reference signal, the first terminal performs at least one of:

transmitting a SL positioning reference signal on the third resource;

receiving SL positioning reference signals on the third resource;

18. The method according to claim 16 or 17, wherein said transmitting SL positioning reference signals based on said third resource comprises:

19. The method of claim 18, wherein the step of providing the first information comprises,

The number of SL positioning reference signals to be transmitted is M2, and M2 is larger than M _max The M is _max For a maximum number of SL positioning reference signals that can be sent by the first terminal, the M1 is less than or equal to M _max 。

20. A method for determining a side link SL positioning reference signal resource, comprising:

the network side equipment or the second terminal sends configuration information of a physical side link feedback channel PSFCH to the first terminal, wherein the configuration information of the PSFCH is used for determining resources of the SL positioning reference signal.

21. The method of claim 20, wherein the step of determining the position of the probe is performed,

in the case that the PSFCH is configured in the SL resource pool, or the first period of the configured PSFCH is not 0, or the first period of the configured PSFCH is N, the resource of the SL positioning reference signal is determined based on the mapping rule of the SL positioning reference signal and the PSFCH; n is 1 or 2 or 4; or alternatively, the first and second heat exchangers may be,

22. The method of claim 21, wherein the step of determining the position of the probe is performed,

23. The method of claim 21, wherein the step of determining the position of the probe is performed,

24. The method according to claim 22 or 23, wherein,

25. The method of claim 21, wherein the step of determining the position of the probe is performed,

26. The method of claim 25, wherein the step of determining the position of the probe is performed,

the second period of the PSFCH is less than the first period of the PSFCH;

27. The method of claim 25, wherein the step of determining the position of the probe is performed,

28. The method of claim 25, wherein the step of determining the position of the probe is performed,

29. The method of claim 20, wherein the step of determining the position of the probe is performed,

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

30. The method of claim 29, wherein the step of providing the first information comprises,

the offset_prs is greater than 0; and/or the number of the groups of groups,

31. The method of claim 21, wherein the step of determining the position of the probe is performed,

in the case that the mapping rule is a second mapping rule, at least one of the following is satisfied:

32. The method of any one of claims 21-31, wherein,

33. The method of any of claims 21-32, wherein the mapping rule is determined based on a first period of the PSFCH or a second period of the PSFCH.

34. An apparatus for determining a side link SL positioning reference signal resource, comprising:

35. A transmission device for a side link SL positioning reference signal, wherein the side includes:

36. An apparatus for determining a side link SL positioning reference signal resource, comprising:

37. A first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of determining a sidelink SL positioning reference signal resource according to any of claims 1 to 19.

38. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of determining a side link SL positioning reference signal resource according to any of claims 20 to 33.

39. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the method of determining a side link SL positioning reference signal resource according to any of claims 1 to 19 or the steps of the method of determining a side link SL positioning reference signal resource according to any of claims 20 to 33.