Lateral link positioning configuration

Abstract

Techniques and methodologies are described for SL PRS positioning configuration design and PRACH-based positioning scheme design in a wireless communication environment. Various examples of a wireless communication method for grouping SL-PRS, designing SL-PRS configuration information, and transmitting PRACH-based configuration information are disclosed.

Description

Technical Field

[0001] The present disclosure relates generally to digital wireless communications. Background Art

[0002] Mobile telecommunication technologies are moving the world towards an increasingly connected and networked society. Compared to existing wireless networks, next generation systems and wireless communication technologies will need to support a wider range of use case characteristics and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a standard for wireless communications for mobile devices and data terminals developed by the Third Generation Partnership Project (3GPP). LTE Advanced (LTE-A) is a wireless communications standard that enhances the LTE standard. The fifth generation wireless system, known as 5G, advances the LTE and LTE-A wireless standards and is committed to supporting higher data rates, a large number of connections, ultra-low latency, high reliability and other emerging business requirements. Summary of the invention

[0004] The present application discloses technologies for sidelink positioning, configuring sidelink positioning signals, receiving sidelink positioning signals, sending sidelink positioning signals, etc.

[0005] A wireless communication method, comprising: a first wireless communication device sends a sequence of a sidelink positioning reference signal (SL-PRS) to a second wireless communication device, or sends a sequence from the first wireless communication device to a third wireless communication device via a fourth wireless communication device, wherein the sequence is one of M SL-PRS sequences, wherein the M sequences are divided into N groups based on a grouping method, wherein M and N are both positive integers, wherein each of the M SL-PRSs has identification information, and wherein each of the N groups has a group identification.

[0006] In some embodiments, at least one of the following is satisfied: M is 4096, M is not divisible by N, N is less than M, or N is equal to M.

[0007] In some embodiments, the grouping method is associated with at least one of: 1) path loss, 2) message size, buffer size, 3) reference signal received power (RSRP), 4) reference signal received path power (RSRPP) and / or 5) priority.

[0008] In some embodiments, the method further comprises: retransmitting the SL-PRS sequence information based on a request from the second wireless communication device or the third communication device, or not based only on a certain time range / window.

[0009] In some embodiments, the retransmission is attempted based on a SL-PRS sequence corresponding to the first transmission SL-PRS sequence.

[0010] In some embodiments, the retransmission is attempted based on the SL-PRS sequence corresponding to the first transmission group identifier.

[0011] In some embodiments, the communication includes using at least one of the following: transmitting, receiving, broadcasting, unicasting, requesting, responding, forwarding, exchanging, or multicasting.

[0012] The present application also discloses a wireless communication method, including communicating configuration information for sidelink positioning.

[0013] In some embodiments, the communication is from a first wireless communication device to a second wireless communication device, or from the first wireless communication device to a third wireless communication device through a fourth wireless communication device.

[0014] In some embodiments, the communication method further includes: receiving a request for the configuration information from the second wireless communication device or from the third wireless communication device.

[0015] In some embodiments, the communication method further includes sending a response from the first wireless communication device to the second wireless communication device or the third wireless communication device, where the response is related to the request received by the first wireless communication device.

[0016] In some embodiments, the configuration information includes at least one of the following: 1) a resource ID, 2) a sequence group, 3) a list of sorted resources, 4) an index indicating the availability of a specific time period, 5) an index indicating the preference level of a specific time period, 6) an index indicating the availability of a logical specific time period, 7) an index indicating the preference level of a logical specific time period, 8) an index indicating a group of specific time periods occupied by a plurality of control signals, 9) an index indicating a control signal, 10) a sequence ID, 11) an SL-PRS pattern, 12) one or more SL-PRS parameters, and / or 13) one or more DMRS IDs.

[0017] In some embodiments, the configuration information does not include at least one of the following: 1) an index indicating the availability of an absolute specific time period, 2) an index indicating the preference level of an absolute specific time period, 3) an index indicating the availability of a logical specific time period, 4) an index indicating the preference level of a logical specific time period, and / or 4) an index indicating an absolute specific time period.

[0018] In some embodiments, the control signal is one of the following: 1) high-layer signaling, RRC, MAC CE, and / or SCI.

[0019] In some embodiments, the specific time period is at least one of the following: a time slot, a symbol, or a certain time domain.

[0020] In some embodiments, the configuration information is sent in multiple symbols in the time domain.

[0021] In some embodiments, the first symbol and / or the second symbol of the plurality of symbols are used to perform a channel access procedure.

[0022] In some embodiments, the configuration information is sent via at least one control signaling message.

[0023] In some embodiments, the configuration information is associated with one or more configurations.

[0024] In some embodiments, the configuration information is in a shared channel occupancy time (COT).

[0025] In some embodiments, the configuration information is in a separate channel occupancy time (COT).

[0026] In some embodiments, some of the configuration information shares at least one of the following: 1) bandwidth information, 2) frequency layer, 3) comb size, 4) PRS frequency offset, 5) period, 6) PRS ID, 7) gap, 8) SL-PRS repetition number, 9) time domain of SL-PRS and / or 10) priority of SL-PRS.

[0027] In some embodiments, the configuration information is associated with the SL-PRS pattern.

[0028] In some embodiments, the SL-PRS pattern is associated with at least one of: the SL-PRS repetition number or the comb tooth size.

[0029] In some embodiments, the SL-PRS repetition number or comb size is indicated by control signaling.

[0030] The present application discloses a wireless communication method, comprising: communicating configuration information or measurement results related to a physical random access channel (PRACH) between a first wireless communication device and a second wireless communication device, or between the first wireless communication device and a third wireless communication device through a fourth wireless communication device.

[0031] In some embodiments, the first wireless communication device, the second wireless communication device, the third communication device and / or the fourth communication device is one of: 1) user equipment (UE), 2) network node, 3) base station, 4) local server, 5) transmission / reception point (TRP), and / or 6) location management function (LMF).

[0032] In some embodiments, the configuration information includes at least one of the following: 1) RACH preamble, 2) RACH preamble length, 3) RACH type, 4) PRACH timing, 5) preamble index, 6) preamble SCS, 7) PRACH target power, 8) corresponding RA-RNTI, 9) PRACH resources, 10) PRACH preamble format, 11) time resources, 12) frequency resources, 13) index to the logical root sequence table, cyclic shift (N_cs), 14) set type, 15) one or more parameters for determining the root sequence and its cyclic shift in the PRACH preamble sequence set or the configuration of the physical random access channel (PRACH) transmission parameters, or 16) UL / SUL indicator field value for PRACH transmission.

[0033] In some embodiments, the RACH type includes at least one of: 1) an indication to perform a type-1 random access procedure, and / or 2) an indication to perform a type-2 random access procedure.

[0034] In some embodiments, the configuration information is a location signal.

[0035] In some embodiments, the location signal is used in the RRC inactive state.

[0036] In some embodiments, the measurement result includes at least one of the following: 1) RSRP / RSRPP measurement, 2) identification information of the wireless device, and / or 3) C-RNTI.

[0037] In some embodiments, the set type includes at least one of: unrestricted, restricted set A, or restricted set B.

[0038] In yet another exemplary embodiment, a device configured or operable to perform the above method is disclosed.

[0039] The above and other aspects and implementations thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 An example diagram of valid resources for SL transmission is provided.

[0041] Figure 2 An example diagram illustrating SL PRS resources is provided.

[0042] Figure 3-5 An example diagram of PRACH-based configuration transmission is provided.

[0043] Figure 6 An example block diagram of a hardware platform that may be part of a network device or communication device is shown.

[0044] Figure 7 An example of wireless communication including a base station (BS) and a user equipment (UE) based on some implementations of the disclosed technology is shown. DETAILED DESCRIPTION

[0045] The example titles of the following sections are used to help understand the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Therefore, one or more features of one example section can be combined with one or more features of another example section. In addition, for the sake of clarity of explanation, 5G terminology is used, but the technology disclosed in this document is not limited to 5G technology, but can be used in wireless systems that implement other protocols.

[0046] Initial Public

[0047] The sidelink of SI has been approved in RAN#94 for Release 18 (Rel-18) positioning.

[0048] In RAN1 and RAN2, the performance and feasibility of potential solutions for SL positioning are studied and evaluated considering relative positioning, ranging and absolute positioning.

[0049] Evaluate the bandwidth requirements needed to meet the identified accuracy requirements discussed in RAN1.

[0050] The study of positioning methods (such as TDOA, RTT, AOA / D, etc.) includes the combination of SL positioning measurements with other RAT-related positioning measurements (such as UE-based measurements).

[0051] The sidelink reference signals for positioning purposes are studied from the physical layer perspective, including signal design, resource allocation, measurements, correlation procedures, reuse of existing reference signals from sidelink communications and from as many positioning as possible, procedures, etc.

[0052] RAN2 includes studies on positioning architecture and signaling procedures (e.g., configuration, measurement reporting) to enable sidelink positioning covering UE-based and network-based positioning, including coordination and alignment with RAN3 and SA2 as required.

[0053] When bandwidth requirements have been determined and studies on sidelink communications in unlicensed spectrum have been conducted, it may be reviewed whether unlicensed spectrum could be considered in further work.

[0054] Embodiment 1 (Positioning Reference Signal (PRS) ID Group)

[0055] Assume that a sidelink (SL) positioning reference signal (PRS) contains M PRS sequences, where M is an integer.

[0056] One existing problem is how to configure and group the M PRS sequences.

[0057] In one example, M PRS sequences are grouped into N subsets, where N is an integer less than or equal to M.

[0058] The grouping method may be predefined or preconfigured.

[0059] In one example, N may be divisible by M. For example, for M=4096, N may be 2 or 2048.

[0060] In another example, N is not divisible by M. For example, for M=4096, N can be 3 or 5.

[0061] In another example, M is configured as 4096.

[0062] In another example, N may be determined to be associated with at least one of: positioning method, path loss, message / buffer size, RSRP, RSRPP, and / or priority.

[0063] In another example, a single PRS sequence among the M PRS sequences cannot be associated with more than one subgroup among the N subgroups. In other words, any two subgroups among the N subgroups including the PRS sequences do not overlap with each other.

[0064] Embodiment 2 (PRS ID group with priority)

[0065] The proposed ID grouping method as disclosed in Embodiment 1 may include priorities associated with subgroups.

[0066] In one example, each of the N subgroups is associated with a priority.

[0067] In another example, N is set to 8.

[0068] In another example, the number of PRS sequences in every N subgroups is the same. For example, for M=4096 and N=8, each of the 8 subgroups contains 512 PRS sequences.

[0069] In another example, the number of PRS sequences in the N subgroups may be different. In other words, there is at least one pair of subgroups among the N subgroups, the pair of subgroups containing different numbers of PRS sequences.

[0070] In one example, if some of the M PRS transmissions fail, there is a retransmission of the PRS sequence.

[0071] In one example, the retransmission may be based on a PRS ID in one or more previous transmissions, i.e., ID information associated with any one of the M PRS sequences. For example, a retransmission of PRS sequence 1 may use the same PRS ID as PRS sequence 1 in one or more previous transmissions. In one example, a retransmission of a PRS sequence may have a PRS ID as the first previous transmission of the PRS sequence. In another example, a retransmission of a PRS sequence may have the same PRS ID as the most recent previous transmission of the PRS sequence.

[0072] In another example, the retransmission may be based on the PRS group ID in the previous transmission, i.e., the ID information associated with any one of the N subgroups. For example, the retransmission of PRS sequence 1 may use the same PRS group ID as PRS sequence 1 in the previous transmission. In one example, the retransmission of a PRS sequence may have the PRS ID as the first previous transmission of the PRS sequence. In another example, the retransmission of a PRS sequence may have the same PRS ID as the most recent previous transmission of the PRS sequence.

[0073] Example 3 (Switching Resource Configuration)

[0074] The present embodiment discloses a plurality of proposed schemes for designing an exchange of resource configuration information between a plurality of wireless devices.

[0075] In one example, two wireless devices communicate resource configuration information to each other.

[0076] In another example, two wireless devices communicate and exchange configuration information through a third wireless device.

[0077] In another example, the wireless device issues a request for configuration information. After receiving the request, another wireless device (eg, UE) responds to the request before sending a confirmation message. Alternatively, the other wireless device issues the configuration information without responding to the received request.

[0078] The configuration information can be transmitted through control signaling.

[0079] In one example, the configuration information includes at least one of the following information: resource ID, sequence ID, sequence group, sorted resource list, valid / invalid / preferred / non-preferred specific time period index, valid / invalid / preferred / non-preferred logical specific time period index (such as Figure 1 ), the symbols occupied by control signaling, and the number of control signaling or DMRS ID for each configuration.

[0080] In another example, the configuration information does not include at least one of the following: a valid / invalid / preferred / non-preferred absolute specific time period index, an absolute specific time period index.

[0081] In another example, the control signaling may be one of the following: higher layer signaling, RRC, MAC CE or SCI.

[0082] In another example, control signaling may be sent to occupy one or more continuous specific time periods in the time domain.

[0083] In another example, the specific time period may be a time slot, a symbol, or a certain time period.

[0084] Example 4 (PRS repetition)

[0085]

[0086] Table 1

[0087] This embodiment discloses several suggested schemes for designing frequency offset repetitive transmissions in SL PRS transmissions to increase the probability of successfully receiving the exchanged configuration information.

[0088] Figure 2 An example of a SL PRS resource scheme is shown.

[0089] like Figure 2 As shown in FIG. 1 , the SL PRS resources include valid resources and invalid resources. For example, the logic symbols {0, 1, 2, 3, 4, 5, 6, 7} are valid resources to be used. Figure 2 shown.

[0090] In one proposed scheme design, a parameter indicating repetition is involved to create a SL PRS transmission scheme.

[0091] In one example, the repetition scheme may depend on a parameter indicating repetition and a comb size.

[0092] For example, in Figure 2 In the transmission environment shown, if the comb size or And the repetition parameter is 2, then for valid symbols {0, 1, 2, 3, 4, 5, 6, 7}, the repetition of the frequency offset scheme can be designed as {0, 0, 2, 2, 1, 1, 3, 3} respectively.

[0093] In the comb size or And in the example where the repetition parameter is 4, for valid symbols {0, 1, 2, 3, 4, 5, 6, 7}, the frequency offset schemes can be designed as {0, 0, 0, 0, 1, 1, 1, 1} respectively.

[0094] In one example, the repetition parameter is one or more default values.

[0095] In another example, the repetition parameter is configured through control signaling.

[0096] Example 5

[0097] If the communication device is configured with Then the first parameter is the SL PRS symbol length, the second parameter is the comb tooth size, and the time resource is {0, 1, 2, 3, 4, 5, 6, 7}, such as Figure 2 shown.

[0098] Alternatively, the communication device may be configured with a 3-part parameter set.

[0099] In one example, the preceding portion may be used for LBT or AGC.

[0100] In another example, the middle portion may be used for PRS signal transmission.

[0101] In another example, the last portion may be used only for clearance.

[0102] Alternatively, the first two valid symbols can be used for LBT symbol / AGC symbol / (LBT+AGC symbol).

[0103] Alternatively, the first valid symbol can be used for LBT.

[0104] Alternatively, the second significant symbol is used for AGC.

[0105] Optionally, resources {2, 3, 4, 5} have PRS frequency offsets {0, 1, 0, 1} respectively.

[0106] Optionally, resources {6, 7} have a PRS frequency offset {0}.

[0107] Alternatively, resources {6, 7} do not send a (PRS) signal.

[0108] Embodiment 6 (Cyclic prefix extension design for SL PRS)

[0109] A cyclic prefix (CP) refers to a prefix of a symbol, which has a repeated end in a wireless communication system.

[0110] There is a time gap associated with the Sidelink Subcarrier Spacing (SLSSC).

[0111] In order to better utilize CP resources, this embodiment discloses a design of multiple CP extension solutions for SL PRS.

[0112] In one example, the CP extension has the same information as the adjacent symbols (eg, AGC symbols).

[0113] In another example, 15kHz or 30kHz SL SCS requires x symbols; 60kHz or 120kHz SL SCS requires y symbols; 480kHz or 960kHz SL SCS requires z symbols; for 15kHz*m, n symbols are required, where n, m, x, y, and z are integers. In another example, x=1, y=2, z=3.

[0114] Embodiment 7 (a control signaling having one or more PRS configuration information)

[0115] The PRS configuration may be sent via control signaling.

[0116] This embodiment discloses multiple methods for designing control signaling.

[0117] In one example, one control signaling is associated with one or more PRS configurations / instances.

[0118] In one example, one or more PRS configuration information may not be in a shared channel occupancy time (COT).

[0119] In another example, one or more PRS configurations or PRS instances may be in a shared COT.

[0120] In another example, the PRS configuration information or the number of PRS instances may be indicated in control signaling.

[0121] The control signaling may include a set of information shared by all PRS instances. For example, the control signaling may include at least one of the following information: bandwidth / frequency layer / comb size / PRS frequency offset / period / PRS ID / gap / priority of the PRS. This information is the same for one or more PRS configuration information or PRS instances.

[0122] Embodiment 8 (Positioning Design Based on PRACH)

[0123] This embodiment discloses several positioning design methods applied in a physical random access channel (PRACH).

[0124] The two communication devices may transmit the PRACH configuration information to each other, or the PRACH configuration information may be transmitted through a third communication device.

[0125] The above-mentioned communication device can be at least one of the following: user equipment (UE), network node, base station, local server, transmission / reception point (TRP) or location management function (LMF).

[0126] In an example, the PRACH configuration information may include at least one of the following information: RACH preamble, RACH preamble length, RACH type, one or more PRACH opportunities, preamble index, preamble SCS, P PRACH,target , corresponding RA-RNTI, PRACH resources, PRACH preamble format, time resources, frequency resources, index of logical root sequence table, cyclic shift (N CS ), a set type (unrestricted, restricted set A, or restricted set B), parameters for determining the root sequence and its cyclic shift in the PRACH preamble sequence set or the configuration of the physical random access channel (PRACH) transmission parameters, and a UL / SUL indicator field value for PRACH transmission.

[0127] In one example, the RACH type includes at least one of: an indication of performing a type-1 random access procedure or a type-2 random access.

[0128] In one example, the PRACH / preamble can be used as a positioning signal.

[0129] In another example, the PRACH / preamble may be used as a positioning signal at least for the RRC inactive state.

[0130] like Figure 3 As disclosed, one or more gNBs send / receive PRACH configuration to / from a UE or LMF.

[0131] Alternatively, in another disclosed example, the LMF sends PRACH configuration information to one or more gNBs, and then the serving gNB sends the PRACH configuration information to the UE.

[0132] Alternatively, in Figure 5 In another disclosed example, the UE sends a PRACH signal to one or more gNBs based on the PRACH configuration information, and then the gNB sends the PRACH measurement results to the LMF.

[0133] In one example, the one or more PRACH measurement results include at least one of: RSRP measurement performed by the gNB, UE ID, or a cell radio network temporary identifier (C-RNTI).

[0134] Figure 6 An example block diagram of a hardware platform 600 that may be part of a network device (e.g., a base station) or a communication device (e.g., a user equipment (UE)) is shown. The hardware platform 600 includes at least one processor 610 and a memory 605 having instructions stored thereon. The instructions executed by the processor 610 configure the hardware platform 600 to perform the operations described in the embodiment of the present invention. Figures 1 to 57 and the operations described in various embodiments described in this patent document. Transmitter 615 sends or transmits information or data to another device. For example, a network device transmitter can send a message to a user device. Receiver 620 receives information or data sent or transmitted by another device. For example, a user device can receive a message from a network device.

[0135] The implementation described above will be applied to wireless communications. Figure 7 An example of a wireless communication system (e.g., a 5G or NR cellular network) including a base station 720 and one or more user equipment (UE) 711, 712, and 713 is shown. In some embodiments, the UE uses a communication link to the network (sometimes referred to as an uplink direction, as shown by dashed arrows 731, 732, 733) to access the BS (e.g., the network), which then enables subsequent communication from the BS to the UE (e.g., shown in the direction from the network to the UE, sometimes referred to as a downlink direction, as shown by arrows 741, 742, 743). In some embodiments, the BS sends information to the UE (sometimes referred to as a downlink direction, as shown by arrows 741, 742, 743), and the UE then enables subsequent communication from the UE to the BS (e.g., shown in the direction from the UE to the BS, sometimes referred to as an uplink direction, as shown by dashed arrows 731, 732, 733). The UE can be, for example, a smart phone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, etc.

[0136] The disclosed and other embodiments, modules and functional operations described in this document may be implemented in digital electronic circuits, or in computer software, firmware or hardware, including the structures disclosed in this document and their structural equivalents, or a combination of one or more of them. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium for execution by a data processing device or for controlling the operation of the data processing device. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a storage device, a material composition that implements a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" includes all apparatus, devices and machines for processing data, including, for example, a programmable processor, a computer or multiple processors or computers. In addition to hardware, the apparatus may also include code that creates an execution environment for the computer program in question, for example, code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, such as a machine-generated electrical, optical or electromagnetic signal, which is generated to encode information for transmission to a suitable receiver device.

[0137] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language, including compiled or interpreted languages, and it may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or portions of code). A computer program may be deployed for execution on one computer or multiple computers located at one site or distributed across multiple sites and interconnected by a communications network.

[0138] The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, such as an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0139] For example, processors suitable for executing computer programs include general and special purpose microprocessors, and any one or more processors of any type of digital computer. Typically, the processor will receive instructions and data from a read-only memory or a random access memory, or both. The basic elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices (e.g., magnetic disks, magneto-optical disks, or optical disks) for storing data, or operatively coupled for receiving data from it or transmitting data to it, or both. However, a computer need not have such a device. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CDROM and DVD-ROM disks. The processor and memory may be supplemented by or incorporated into a dedicated logic circuit.

[0140] Although this document contains many details, these should not be interpreted as limitations on the scope of the claimed invention or the scope that may be claimed, but as descriptions of specific features of specific embodiments. Certain features described in the context of separate embodiments in this document may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. In addition, although features may be described above as working in certain combinations and even initially claimed as such, one or more features from the claimed combination may be deleted from the combination in some cases, and the claimed combination may be for a sub-combination or a variant of a sub-combination. Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that the operations be performed in the particular order shown or in sequence, or that all the operations shown be performed to achieve the desired result.

[0141] Only a few examples and implementations are disclosed. Changes, modifications and enhancements may be made to the described examples and implementations and other implementations based on what is disclosed.

Claims

1. A wireless communication method, include: A sequence of a sidelink positioning reference signal (SL-PRS) is transmitted by a first wireless communication device to a second wireless communication device, or the sequence is transmitted from the first wireless communication device to a third wireless communication device via a fourth wireless communication device, wherein the sequence is one of M SL-PRS sequences, wherein the M sequences are divided into N groups based on a grouping method, wherein M and N are both positive integers, wherein each of the M SL-PRSs has identification information, and wherein each of the N groups has a group identification.

2. The method according to claim 1, wherein at least one of the following is satisfied: M is 4096, M is not divisible by N, N is less than M, or N is equal to M.

3. The method of claim 1, wherein the grouping method is associated with at least one of: 1) path loss, 2) message size, buffer size, 3) reference signal received power (RSRP), 4) reference signal received path power (RSRPP) and / or 5) priority.

4. The method according to claim 1, further comprising: include: The SL-PRS sequence information is retransmitted based on a request from the second wireless communication device or from the third wireless communication device, or not based only on a certain time range / window.

5. The method of claim 4, wherein the retransmission is attempted based on an SL-PRS sequence corresponding to a first transmission SL-PRS sequence. The method of claim 4 , wherein the retransmission is attempted based on a SL-PRS sequence corresponding to the first transmission group identifier.

7. The method of claim 1, wherein the transmitting comprises using at least one of: sending, receiving, broadcasting, unicasting, requesting, responding, forwarding, exchanging, or multicasting.

8. A wireless communication method, include: Communicates configuration information for sidelink positioning.

9. The method of claim 8, wherein the communication is from a first wireless communication device to a second wireless communication device, or from the first wireless communication device to a third wireless communication device via a fourth wireless communication device.

10. The method according to claim 9, further comprising: include: A request for the configuration information is received from the second wireless communication device or from the third wireless communication device.

11. The method according to claim 9, further comprising: include: A response is sent from the first wireless communication device to the second wireless communication device or to the third wireless communication device, wherein the response is related to the request received by the first wireless communication device.

12. The method according to claim 8, wherein the configuration information includes at least one of the following: 1) resource ID, 2) sequence group, 3) a list of ordered resources, 4) an index indicating the availability of a specific time period, 5) an index indicating the preference of the specific time period, 6) an index indicating the availability of a logical specific time period, 7) an index indicating the preference of the logical specific time period, 8) an index indicating a group of specific time periods occupied by multiple control signals, 9) an index indicating the control signal, 10) sequence ID, 11) SL-PRS pattern, 12) one or more SL-PRS parameters and / or 13) one or more DMRSIDs.

13. The method according to claim 8, wherein the configuration information does not include at least one of the following: 1) an index indicating the availability of an absolutely specific time period, 2) an index indicating the preference for the absolutely specific time period, 3) an index indicating the availability of a logically specific time period, 4) an index indicating the preference for the logically specific time period, and / or 4) an index indicating an absolutely specific time period.

14. The method according to claim 12, wherein the control signal is one of the following: 1) high-layer signaling, RRC, MACCE and / or SCI.

15. The method according to claim 12 or 13, wherein the specific time period is at least one of the following: a time slot, a symbol and / or a certain time domain.

16. The method of claim 8, wherein the configuration information is sent in a plurality of symbols in the time domain.

17. The method of claim 16, wherein the first symbol and / or the second symbol of the plurality of symbols are used to perform one or more channel access procedures.

18. The method of claim 9, wherein the configuration information is sent via at least one control signaling message. The method of claim 18 , wherein the configuration information is associated with one or more configurations.

20. The method of claim 8, wherein the configuration information is in a shared channel occupancy time (COT).

21. The method of claim 8, wherein the configuration information is in a separate channel occupancy time (COT).

22. The method of claim 8, wherein some of the configuration information shares at least one of the following: 1) bandwidth information, 2) frequency layer, 3) comb tooth size, 4) PRS frequency offset, 5) period, 6) PRS ID, 7) gap, 8) SL-PRS repetition number, 9) time domain of SL-PRS and / or 9) priority of the SL-PRS.

23. The method of claim 8, wherein the configuration information is associated with a SL-PRS pattern.

24. The method of claim 23, wherein the SL-PRS pattern is associated with at least one of: a SL-PRS repetition number or a comb tooth size.

25. The method of claim 24, wherein the SL-PRS repetition number or comb size is indicated by control signaling.

26. A wireless communication method, include: Configuration information or measurement results related to a physical random access channel (PRACH) are communicated between a first wireless communication device and a second wireless communication device, or between the first wireless communication device and a third wireless communication device through a fourth wireless communication device.

27. The method of claim 26, wherein the first wireless communication device, the second wireless communication device, the third communication device and / or the fourth communication device is one of: 1) a user equipment (UE), 2) a network node, 3) a base station, 4) a local server, 5) a transmission / reception point (TRP), and / or 6) a location management function (LMF).

28. The method of claim 26, wherein the configuration information comprises at least one of the following: 1) a RACH preamble, 2) a RACH preamble length, 3) a RACH type, 4) one or more PRACH opportunities, 5) a preamble index, 6) a preamble SCS, 7) a target power for PRACH, 8) a corresponding RA-RNTI, 9) a PRACH resource, 10) a PRACH preamble format, 11) a time resource, 12) a frequency resource, 13) an index to a logical root sequence table, a cyclic shift (N_cs), 14) a set type, 15) one or more parameters for determining root sequences and their cyclic shifts in the PRACH preamble sequence set, or configuration of a physical random access channel (PRACH) transmission parameter, or 16) a UL / SUL indicator field value for PRACH transmission.

29. The method of claim 28, wherein the RACH type comprises at least one of: 1) an indication of performing a type-1 random access procedure, and / or 2) an indication of performing a type-2 random access.

30. The method of claim 26, wherein the configuration information is a location signal.

31. The method of claim 30, wherein the location signal is used in an RRC inactive state.

32. The method of claim 26, wherein the measurement result comprises at least one of: 1) RSRP / RSRPP measurement, 2) identification information of the wireless device, and / or 3) C-RNTI.

33. The method of claim 28, wherein the set type comprises at least one of: unrestricted, restricted set A, or restricted set B.

34. An apparatus for wireless communication, include: A processor configured to implement the method according to any one of claims 1 to 33.

35. A computer-readable storage medium having codes stored thereon, which, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 33.

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