Method and apparatus for transmitting sidelink location reference signal

Abstract

The application relates to a method and apparatus for transmitting a side link (SL) positioning reference signal (PRS). One embodiment of the present disclosure provides a user equipment (UE) comprising: a transceiver; and a processor coupled with the transceiver and configured to: obtain configuration information associated with a set of region pairs in a time domain and a frequency domain, where each pair of regions in the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of sidelink control information (SCI) transmissions, and wherein the one or more resources within the second region are used for one or more sidelink positioning reference signal (SL-PRS) sets associated with the set of SCI transmissions; and determining a sidelink time slot structure based on the configuration information.

Description

Technical Field

[0001] The present disclosure relates to wireless communication technology, and more specifically, to a method and apparatus for transmitting a sidelink (SL) positioning reference signal (PRS) in a 3rd Generation Partnership Project (3GPP) 5G and / or NR (New Radio) network. Background Art

[0002] Vehicle-to-everything (V2X) has been introduced into 3GPP 5G wireless communication technology. In terms of the channel structure of V2X communication, the direct link between two UEs is called a sidelink. Sidelink is a long-term evolution (LTE) feature introduced in 3GPP Release 12, and enables direct communication between UEs in close proximity, and data does not need to pass through a base station (BS) or core network.

[0003] PRS and Sounding Reference Signal (SRS) are designed to be transmitted on the Uu link for positioning, while the sidelink PRS is not designed. Therefore, it is advantageous to provide methods and apparatus for transmitting SL PRS. Summary of the invention

[0004] Some embodiments of the present disclosure provide a user equipment (UE), comprising: a transceiver; and a processor, which is coupled to the transceiver and configured to: obtain configuration information associated with a set of region pairs in time domain and frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of sidelink control information (SCI) transmissions, and wherein the one or more resources within the second region are used for one or more sidelink positioning reference signal (SL-PRS) groups associated with the set of SCI transmissions; and determine a sidelink timeslot structure based on the configuration information.

[0005] In some embodiments, the processor of the UE is configured to: transmit an SCI transmission on the one or more resources within the first region; and transmit the one or more SL-PRS groups on the one or more resources within the second region.

[0006] In some embodiments, the processor of the UE is configured to: receive an SCI transmission on the one or more resources within the first region; and receive the one or more SL-PRS groups on the one or more resources within the second region.

[0007] In some embodiments, for a pair of regions within the set of region pairs, the SCI includes at least one of: a set of indications of time domain resources of the one or more SL-PRS groups; a set of indications of frequency domain resources of the one or more SL-PRS groups; a set of comb structure sizes of the one or more SL-PRS groups; or a set of resource element (RE) offset values ​​of the one or more SL-PRS groups.

[0008] In some embodiments, for each pair of regions, the configuration information includes at least one of the following: an indication of a set of time domain resource indices and a set of frequency domain resource indices used for the one or more resources within the first region; the total number of resources used for the set of SCI transmissions; the size of the resources used for each SCI transmission; the total number of SCI transmissions in the set of SCI transmissions; an indication of a set of time domain resource indices and a set of frequency domain resource indices used for the one or more resources within the second region; the comb structure size of the one or more SL-PRS groups; a set of time domain resource indices for the one or more SL-PRS groups; a set of frequency domain resource indices for the one or more SL-PRS groups; a set of comb structure sizes for the one or more SL-PRS groups; a set of RE offset values ​​for the one or more SL-PRS groups; or the bandwidth of the side link time slot structure in units of subchannels or resource blocks (RBs).

[0009] In some embodiments, the set of time domain resource indices includes one or more symbol indices within the sidelink timeslot structure.

[0010] In some embodiments, the set of frequency-domain resource indices includes one or more sub-channel indices or one or more resource block (RB) indices within the sidelink timeslot structure.

[0011] In some embodiments, the one or more subchannel indices or the one or more RB indices are consecutive or non-consecutive.

[0012] In some embodiments, the one or more resources within the first region and the one or more resources within the second region are multiplexed in the frequency domain or the time domain.

[0013] In some embodiments, the configuration information further includes at least one of: a set of indications of one or more symbols for automatic gain control (AGC) in the sidelink timeslot structure; or a set of indications of one or more symbols for receive-transmit conversion of the UE.

[0014] In some embodiments, the configuration information is received from a Location Management Function (LMF), a BS, or another UE; or the configuration information is preconfigured to the UE.

[0015] In some embodiments, the first area of ​​the first pair of areas of the set of area pairs and the first area of ​​the second pair of areas of the set of area pairs are located in one of the following: one or more continuous subchannels; one or more discontinuous subchannels; one or more continuous RBs; or one or more discontinuous RBs.

[0016] Some embodiments of the present disclosure provide a network node, comprising: a transceiver; and a processor, which is coupled to the transceiver and configured to: determine configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of SCI transmissions, and wherein the one or more resources within the second region are used for one or more SL-PRS groups associated with the set of SCI transmissions; and transmit the configuration information.

[0017] In some embodiments, for each pair of regions, the configuration information includes at least one of the following: an indication of a set of time domain resource indices and a set of frequency domain resource indices used for the one or more resources within the first region; the total number of resources used for the set of SCI transmissions; the size of the resources used for each SCI transmission; the total number of SCI transmissions in the set of SCI transmissions; an indication of a set of time domain resource indices and a set of frequency domain resource indices used for the one or more resources within the second region; the comb structure size of the one or more SL-PRS groups; a set of time domain resource indices for the one or more SL-PRS groups; a set of frequency domain resource indices for the one or more SL-PRS groups; a set of comb structure sizes for the one or more SL-PRS groups; a set of RE offset values ​​for the one or more SL-PRS groups; or the bandwidth of the side link time slot structure in units of subchannels or RBs.

[0018] In some embodiments, the set of time domain resource indices includes one or more symbol indices within the sidelink timeslot structure.

[0019] In some embodiments, the set of frequency-domain resource indices includes one or more sub-channel indices or one or more resource block (RB) indices within the sidelink timeslot structure.

[0020] In some embodiments, the one or more subchannel indices or the one or more RB indices are consecutive or non-consecutive.

[0021] In some embodiments, the one or more resources within the first region and the one or more resources within the second region are multiplexed in the frequency domain or the time domain.

[0022] In some embodiments, the configuration information further includes at least one of: a set of indications of one or more symbols for AGC in the sidelink time slot structure; or a set of indications of one or more symbols for receive-transmit conversion of the UE.

[0023] In some embodiments, the first area of ​​the first pair of areas of the set of area pairs and the first area of ​​the second pair of areas of the set of area pairs are located in one of the following: one or more continuous subchannels; one or more discontinuous subchannels; one or more continuous RBs; or one or more discontinuous RBs.

[0024] In some embodiments, the network node is a LMF or a BS.

[0025] Some embodiments of the present disclosure provide a method performed by a UE, comprising: obtaining configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of SCI transmissions, and wherein the one or more resources within the second region are used for one or more SL-PRS groups associated with the set of SCI transmissions; and determining a sidelink time slot structure based on the configuration information.

[0026] Some embodiments of the present disclosure provide a method performed by a network node, comprising: determining configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of SCI transmissions, and wherein the one or more resources within the second region are used for one or more SL-PRS groups associated with the set of SCI transmissions; and transmitting the configuration information. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to describe the manner in which the advantages and features of the present application can be obtained, the description of the present application is presented by reference to specific embodiments of the present application illustrated in the accompanying drawings. These drawings depict only example embodiments of the present application and are therefore not to be considered limiting of its scope.

[0028] Figure 1 An exemplary wireless communication system according to some embodiments of the present disclosure is described.

[0029] Figure 2 A flow chart illustrating a method for transmitting a SL PRS according to some embodiments of the present disclosure.

[0030] Figure 3A flow chart illustrating a method for transmitting a SL PRS according to some embodiments of the present disclosure.

[0031] Figures 4A to 4I The SL-PRS configuration information according to some embodiments of the present disclosure is described.

[0032] Figure 5A The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0033] Figure 5B Description of some embodiments of the present disclosure Figure 5A Part of the sidelink time slot structure.

[0034] Figure 5C The structure of the SL-PRS resource set according to some embodiments of the present disclosure is described.

[0035] Figure 6 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0036] Fig. 7A The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0037] Figure 7B Description of some embodiments of the present disclosure Fig. 7A Part of the sidelink time slot structure.

[0038] Figure 7C The structure of the SL-PRS resource set according to some embodiments of the present disclosure is described.

[0039] Figure 8 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0040] Fig. 9 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0041] Fig.10 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0042] Fig.11 A simplified block diagram illustrating an exemplary apparatus according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0043] The detailed description of the accompanying drawings is intended as a description of the currently preferred embodiments of the present disclosure, and is not intended to represent the only form in which the present disclosure can be practiced. It should be understood that the same or equivalent functions can be implemented by different embodiments, which are intended to be included in the spirit and scope of the present disclosure.

[0044] Although the operations are depicted in a particular order in the drawings, those skilled in the art will readily recognize that such operations need not be performed in the particular order or sequential order shown, or that all of the illustrated operations need not be performed to achieve a desired result; one or more operations may sometimes be skipped. In addition, the drawings may schematically depict one or more example processes in the form of flow charts. However, other operations not depicted may be incorporated into the schematically illustrated example processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between any illustrated operations. In some cases, multitasking and parallel processing may be advantageous.

[0045] Reference will now be made in detail to some embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. For ease of understanding, embodiments are provided under specific network architectures and new service scenarios (e.g., 3rd Generation Partnership Project (3GPP) 5G (NR), 3GPP Long Term Evolution (LTE), etc.). It is considered that as network architectures and new service scenarios develop, all embodiments in the present disclosure are also applicable to similar technical issues; and in addition, the terms cited in the present disclosure may be changed, which should not affect the principles of the present disclosure.

[0046] The embodiments of the present disclosure may be provided in a network architecture that adopts various service scenarios, such as but not limited to 3GPP 3G, LTE, LTE Advanced (LTE-A), 3GPP 4G, 3GPP 5G NR, 3GPP Release 16 and later, etc. It is considered that with the development of 3GPP and related communication technologies, the terms listed in the present disclosure may change, which should not affect the principles of the present disclosure.

[0047] Embodiments of the present disclosure may relate to coexistence between LTE V2X and NR V2X. It is considered that all embodiments in the present disclosure are also applicable to similar technical issues in coexistence between other different radio access technologies (RATs).

[0048] A user equipment (UE) in an NR V2X scenario and / or an LTE V2X scenario may be referred to as a V2X UE. A V2X UE transmitting data on a sidelink may be referred to as a UE for transmission, a transmitting UE, a transmitting V2X UE, a Tx UE, a V2XTx UE, a sidelink (SL) Tx UE, or the like. A V2X UE receiving data on a sidelink may be referred to as a UE for reception, a receiving UE, a receiving V2X UE, an Rx UE, a V2X Rx UE, a SL Rx UE, or the like.

[0049] A V2X UE may include a computing device such as a desktop computer, a laptop computer, a personal digital assistant (PDA), a tablet computer, a smart TV (e.g., a TV connected to the Internet), a set-top box, a game console, a security system (including security cameras), an in-vehicle computer, a network device (e.g., a router, switch, and modem), an Internet of Things (IoT) device, or the like.

[0050] According to some embodiments of the present disclosure, the V2X UE may include a portable wireless communication device, a smartphone, a cellular phone, a flip phone, a device with a subscriber identification module, a personal computer, a selective call receiver, or any other device capable of sending and receiving communication signals on a wireless network.

[0051] According to some embodiments of the present disclosure, the V2X UE may include a wearable device, such as a smart watch, a fitness band, an optical head-mounted display, or the like. In addition, the V2X UE may be referred to as a subscriber unit, a mobile device, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a subscriber station, a user terminal, or a device, or described using other terms used in the art. The V2X UE may communicate directly with the BS via a communication signal.

[0052] The BS in the NR V2X scenario and / or the LTE V2X scenario may be referred to as a base station unit, a base station, an access point, an access terminal, a macro cell, a Node B, an enhanced Node B (eNB), a gNB, a home Node B, a relay node, a device, a remote unit, or other terms used in the art. The BS may be distributed over a geographical area. In general, a BS is part of a radio access network, which may include one or more controllers communicatively coupled to one or more corresponding base stations.

[0053] The BS is typically communicatively coupled to one or more packet core networks (PCNs), which may be coupled to other networks, such as a packet data network (PDN) (e.g., the Internet) and a public switched telephone network, among other networks. These and other elements of the radio access and core networks are not illustrated, but are generally well known to those of ordinary skill in the art. For example, one or more BSs may be communicatively coupled to a mobility management entity (MME), a serving gateway (SGW), and / or a packet data network gateway (PGW).

[0054] The BS may serve several V2X UEs within a service area such as a cell or a cell sector via wireless communication links. The BS may communicate directly with one or more V2X UEs via communication signals. For example, the BS may serve V2X UEs within a macro cell.

[0055] In the NR V2X scenario, the sidelink communication between the Tx UE and the receiving (Rx) UE includes multicast communication, unicast communication or broadcast communication.

[0056] Figure 1 An exemplary wireless communication system 100 (eg, a V2X communication system) is illustrated according to some embodiments of the present disclosure.

[0057] like Figure 1 , a wireless communication system 100 includes a base station (e.g., BS 102) and some UEs (e.g., UE 101-A, UE 101-B, UE 101-C, and UE 101-D). UE 101-A and UE 101-B are within the coverage of BS 102, and UE 101-C and UE 101-D are outside the coverage of BS 102. UE 101-A, UE 101-B, UE 101-C, and UE 101-D may perform sidelink unicast transmission, sidelink multicast transmission, or sidelink broadcast transmission. UE 101-A, UE 101-B, UE 101-C, and UE 101-D may be referred to as V2X UEs. It is contemplated that according to some other embodiments of the present disclosure, a V2X communication system may include more BSs and more or fewer V2X UEs.

[0058] In addition, despite Figure 1 The V2X UE shown in the figure is illustrated in the shape of a mobile phone, but it is contemplated that according to some other embodiments of the present disclosure, the V2X communication system may include any type of UE (e.g., a roadmap device, a cellular phone, a computer, a laptop, an IoT device, or other type of device).

[0059] according to Figure 1 In some embodiments of the present invention, UE 101-A may be used as a Tx UE, and UE 101-B, UE 101-C, and UE 101-D may be used as Rx UEs. UE 101-A may exchange V2X messages with UE 101-B or UE 101-C via a sidelink using, for example, NR technology or LTE technology via a PC5 interface as defined in a 3GPP document. UE 101-A may transmit information or data to other UEs within the V2X communication system via sidelink unicast, sidelink multicast, or sidelink broadcast. For example, UE 101-A may transmit data to UE 101-B in a sidelink unicast session. UE 101-A may transmit data to UE 101-B and UE 101-C in a multicast group via a sidelink multicast transmission session. Furthermore, UE 101-A may transmit data to UE 101-B and UE 101-C via the sidelink broadcast transmission session.

[0060] Alternatively, according to Figure 1 In some other embodiments, UE 101-B or UE 101-C may function as a Tx UE and transmit information or data, and UE 101-A may function as a Rx UE and receive information or data from UE 101-B or UE 101-C.

[0061] Figure 1 Both UE 101-A and UE 101-B in the embodiment of the present invention can transmit information to BS 102 and receive control information from BS 102, for example, via a Uu interface. BS 102 can define one or more cells, and each cell can have a coverage area. Figure 1 As shown in FIG. 1 , both UE 101-A and UE 101-B are within the coverage of BS 102, while UE 101-C and UE 101-D are not within the coverage.

[0062] like Figure 1 The BS 102 described and shown in the figure may not be a specific base station, but may be any base station in the V2X communication system. For example, assuming that the V2X communication system includes two BSs, then the situation where the UE 101-A is within the coverage area of ​​any one of the two BSs may be referred to as the situation where the UE 101-A is within the coverage area of ​​the BS in the V2X communication system; and the situation where the UE 101-A is only outside the coverage areas of the two BSs may be referred to as the situation where the UE 101-A is outside the coverage area of ​​the BS in the V2X communication system.

[0063] The UE can operate in different modes. At least the following two sidelink resource allocation modes are defined for sidelink communication: Resource allocation mode 1: the BS schedules the sidelink resources to be used by the UE for sidelink transmission; and Resource allocation mode 2: the UE determines the sidelink transmission resources within the sidelink resources configured by the BS or the network or the pre-configured sidelink resources. In resource allocation mode 2, the BS does not schedule sidelink resources for the UE. Figure 1 , UE 101-A and UE 101-B may be in resource allocation mode 1, and UE 101-C and UE 101-D may be in resource allocation mode 2.

[0064] Figure 2 A flow chart illustrating a method for transmitting a SL PRS according to some embodiments of the present disclosure. Figure 2 The method may be performed by a UE, a Tx UE or an Rx UE (eg, Figure 1 Although described with respect to a UE, it should be understood that other devices may be configured to perform the same Figure 2 A similar approach to the one used in this paper.

[0065] In operation 201, the UE may obtain configuration information associated with a set of region pairs in the time domain and the frequency domain. Each pair of regions within the set of region pairs is associated with one or more resources within a first region (e.g., an SCI region, hereinafter in this disclosure, the first region and the SCI region may be used interchangeably where appropriate) and one or more resources within a second region (e.g., an SL-PRS region, hereinafter in this disclosure, the second region and the SL-PRS region may be used interchangeably where appropriate). One or more resources within the SCI region are used for a set of SCI transmissions. One or more resources within the SL-PRS region are used for one or more SL-PRS groups associated with the set of SCI transmissions. In operation 202, the UE may determine the sidelink timeslot structure based on the configuration information. Specific examples are in Figures 5A to 10 Described in.

[0066] In some embodiments, the UE may transmit an SCI transmission on one or more resources within the SCI region; and may transmit one or more SL-PRS groups on one or more resources within the SL-PRS region. For example, a Tx UE (e.g., UE 101-A) may transmit an SCI transmission on one or more resources within the SCI region; and may transmit one or more SL-PRS groups on one or more resources within the SL-PRS region.

[0067] In some embodiments, the UE may receive SCI transmissions on one or more resources within the SCI region; and may receive one or more SL-PRS groups on one or more resources within the SL-PRS region. For example, an Rx UE (e.g., UE 101-C) may receive SCI transmissions from a Tx UE 101-A on one or more resources within the SCI region; and may receive one or more SL-PRS groups on one or more resources within the SL-PRS region.

[0068] In some embodiments, for a pair of regions within the set of region pairs, the SCI includes at least one of:

[0069] - a set of indications of time domain resources of one or more SL-PRS groups;

[0070] - a set of indications of frequency domain resources of one or more SL-PRS groups;

[0071] - a set of comb structure sizes for one or more SL-PRS groups; or

[0072] - a set of RE offset values ​​for one or more SL-PRS groups, examples of which are Figures 5A to 10 Described in.

[0073] In some embodiments, for each pair of regions, the configuration information includes at least one of the following:

[0074] - an indication of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources in the SCI region;

[0075] - the total number of resources used for the set of SCI transmissions;

[0076] - The size of the resources used for each SCI transmission;

[0077] - the total number of SCI transmissions in the set of SCI transmissions;

[0078] - an indication of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources in the SL-PRS region;

[0079] - Comb structure size of one or more SL-PRS groups;

[0080] - a set of time domain resource indices for one or more SL-PRS groups;

[0081] - a set of frequency domain resource indices for one or more SL-PRS groups;

[0082] - a set of comb structure sizes for one or more SL-PRS groups;

[0083] - a set of RE offset values ​​for one or more SL-PRS groups; or

[0084] - The bandwidth of the sidelink time slot structure in units of subchannels or RBs, for example Figures 5A to 10 Described in.

[0085] In some embodiments, a set of time domain resource indices includes one or more symbol indices within the sidelink time slot structure, a specific example of which is Figures 5A to 10 Described in.

[0086] In some embodiments, the set of frequency-domain resource indices includes one or more sub-channel indices or one or more resource block (RB) indices within a sidelink slot structure.

[0087] In some embodiments, one or more subchannel indices or one or more RB indices are continuous or discontinuous. In some scenarios, subchannels or RBs are staggered. Fig. 7A In the embodiment of FIG. 7 , the sub-channels of the SCI region 701 are discontinuous, and the sub-channels of the SCI regions 701 and 702 are interleaved.

[0088] In some embodiments, one or more resources in the SCI region and one or more resources in the SL-PRS region are multiplexed in the frequency domain or the time domain. In other words, the resources in the SCI region and the resources in the SL-PRS region are FDM or TDM-ed.

[0089] In some embodiments, the configuration information further includes at least one of the following:

[0090] - a set of indications of one or more symbols used for AGC in the sidelink slot structure (e.g., AGC symbol indices); or

[0091] - A set of indications of one or more symbols for a receive-transmit transition of the UE (eg, Rx-Tx transition symbol index or gap symbol index).

[0092] In some embodiments, from LMF, BS (e.g., Figure 1 The BS 102 in the UE or another UE receives the configuration information. In some other embodiments, the configuration information is pre-configured to the UE.

[0093] In some embodiments, the SCI region in one pair of regions in the set of region pairs and the SCI region in the other pair of regions in the set of region pairs are located in one of the following:

[0094] - one or more consecutive sub-channels;

[0095] - one or more discontinuous sub-channels;

[0096] - one or more consecutive RBs; or

[0097] - one or more non-contiguous RBs, specific examples are Figures 5A to 10 Described in.

[0098] exist Figure 1 , 3 The details described in the embodiments 5A to 11 are applicable to Figure 2 In addition, in Figure 2 The details described in the embodiments apply to Figure 1 , 3 And all embodiments of 5A to 11.

[0099] Figure 3 A flow chart illustrating a method for transmitting a SL PRS according to some embodiments of the present disclosure. Figure 3 The method may be performed by a network node (eg, LMF or BS (eg, Figure 1 Although described with respect to a network node, it should be understood that other devices may be configured to perform the same as BS102)). Figure 3 A similar approach to the one used in this paper.

[0100] In operation 301, a network node may determine configuration information associated with a set of region pairs in the time domain and the frequency domain. Each pair of regions within the set of region pairs is associated with one or more resources within an SCI region and one or more resources within an SL-PRS region. One or more resources within the SCI region are used for a set of SCI transmissions. One or more resources within the SL-PRS region are used for one or more SL-PRS groups associated with the set of SCI transmissions. In operation 302, the network node may transmit configuration information.

[0101] In some embodiments, for each pair of regions, the configuration information includes at least one of the following:

[0102] - an indication of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources in the first region;

[0103] - the total number of resources used for the set of SCI transmissions;

[0104] - The size of the resources used for each SCI transmission;

[0105] - the total number of SCI transmissions in the set of SCI transmissions;

[0106] - an indication of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources in the second region;

[0107] - Comb structure size of one or more SL-PRS groups;

[0108] - a set of time domain resource indices for one or more SL-PRS groups;

[0109] - a set of frequency domain resource indices for one or more SL-PRS groups;

[0110] - a set of comb structure sizes for one or more SL-PRS groups;

[0111] - a set of RE offset values ​​for one or more SL-PRS groups; or

[0112] - The bandwidth of the sidelink time slot structure in units of subchannels or RBs, for example Figures 5A to 10 Described in.

[0113] In some embodiments, a set of time domain resource indices includes one or more symbol indices within the sidelink time slot structure, a specific example of which is Figures 5A to 10 Described in.

[0114] In some embodiments, the set of frequency-domain resource indices includes one or more sub-channel indices or one or more RB indices within a sidelink timeslot structure.

[0115] In some embodiments, one or more subchannel indices or one or more RB indices are continuous or discontinuous. In some scenarios, subchannels or RBs are staggered. Fig. 7A In the embodiment of FIG. 7 , the sub-channels of the SCI region 701 are discontinuous, and the sub-channels of the SCI regions 701 and 702 are interleaved.

[0116] In some embodiments, one or more resources in the SCI region and one or more resources in the SL-PRS region are multiplexed in the frequency domain or the time domain. In other words, the resources in the SCI region and the resources in the SL-PRS region are FDM or TDM-ed.

[0117] In some embodiments, the configuration information further includes at least one of the following:

[0118] - a set of indications of one or more symbols used for AGC in the sidelink slot structure (e.g., AGC symbol indices); or

[0119] - A set of indications of one or more symbols for a receive-transmit transition of the UE (eg, Rx-Tx transition symbol index or gap symbol index).

[0120] In some embodiments, the SCI region in one pair of regions in the set of region pairs and the SCI region in the other pair of regions in the set of region pairs are located in one of the following:

[0121] - one or more consecutive sub-channels;

[0122] - one or more discontinuous sub-channels;

[0123] - one or more consecutive RBs; or

[0124] - one or more non-contiguous RBs, specific examples are Figures 5A to 10 Described in.

[0125] exist Figure 1 , 2 The details described in the embodiments 5A to 11 are applicable to Figure 3 In addition, in Figure 3 The details described in the embodiments apply to Figure 1 , 2 And all embodiments of 5A to 11.

[0126] Figures 4A to 4I The SL-PRS configuration information according to some embodiments of the present application is described.

[0127] The SL-PRS may be transmitted in a dedicated SL-PRS resource pool, and relevant configuration information may be configured for each resource pool. The relevant configuration information may include at least one of the following:

[0128] (1) The starting symbol of SL-PRS in the time domain can be expressed as is the first symbol of the downlink PRS in a slot and is given by the higher layer parameter dl-PRS-ResourceSymbolOffset-r16;

[0129] (2) The total number of SL-PRS symbols, which can be expressed as L PRS , for example, may be defined as any one of {2, 4, 6, 12}. The total number of SL-PRS symbols may also be named as “the total number of symbols used for SL-PRS” or “the total number of SL-PRS symbols” or the like.

[0130] (3) The size of the comb structure, for example, {2, 4, 6, 12}, which can be expressed as As defined in 3GPP standard document TS38.214. The combination of may be one of {2,2}, {4,2}, {6,2}, {12,2}, {4,4}, {12,4}, {6,6}, {12,6} or {12,12};

[0131] (4) SL-PRS RE offset set, which can be expressed as It can be from the collection The value of is given by a higher layer parameter (e.g., dl-PRS-ReOffset-r16).

[0132] The following table 1 shows Figures 4A to 4I The total number of SL-PRS symbols and the comb structure size are illustrated in each figure.

[0133] Table 1

[0134]

[0135] Figures 4A to 4I Each block in the UE may be referred to as an RE, which may consist of one slot in the time domain and one sub-subcarrier in the frequency domain. Specifically, in the time domain, there are 14 symbols, which may include symbol #0 to symbol #13 (reference numbers not shown in the drawings), and in the frequency domain, there are 12 sub-subcarriers in the frequency domain, which may be sub-subcarrier #0 to sub-subcarrier #11 (reference numbers not shown in the drawings).

[0136] exist Figure 4A, the total number of SL-PRS symbols is 2, the comb structure size is 2, and there are two offset values ​​in the SL-PRS RE offset set, i.e., SL-PRS RE offset set = {0, 1}. For an offset value of 0, the RE on the first symbol shown as a black block may be used, and for an offset value of 1, the RE on the second symbol shown as a black block may be offset by one RE in the frequency domain.

[0137] exist Figure 4B In , the total number of SL-PRS symbols is 4, the comb structure size is 2, and there are four offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 1, 0, 1}.

[0138] exist Figure 4C , the total number of SL-PRS symbols is 6, the comb structure size is 2, and there are six offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 1, 0, 1, 0, 1}.

[0139] exist Figure 4D , the total number of SL-PRS symbols is 8, the comb structure size is 2, and there are eight offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 1, 0, 1, 0, 1, 0}.

[0140] exist Figure 4E , the total number of SL-PRS symbols is 4, the comb structure size is 4, and there are four offset values ​​in the SL-PRS RE offset set, i.e., SL-PRS RE offset set = {0, 2, 1, 3}. For an offset value of 0, the RE on the first symbol shown as a black block may be used; for an offset value of 2, the RE on the second symbol shown as a black block may be offset by two REs in the frequency domain; for an offset value of 1, the RE on the third symbol shown as a black block may be offset by one RE in the frequency domain; and for an offset value of 3, the RE on the fourth symbol shown as a black block may be offset by three REs in the frequency domain.

[0141] exist Figure 4F , the total number of SL-PRS symbols is 12, the comb structure size is 4, and there are twelve offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 2, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3}.

[0142] exist Figure 4G In , the total number of SL-PRS symbols is 6, the comb structure size is 6, and there are six offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 3, 1, 4, 2, 5}.

[0143] exist Figure 4H , the total number of SL-PRS symbols is 12, the comb structure size is 6, and there are twelve offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 3, 1, 4, 2, 5, 0, 3, 1, 4, 2, 5}.

[0144] exist Fig. 4I In , the total number of SL-PRS symbols is 12, the comb structure size is 12, and there are 12 offset values ​​in the SL-PRS RE offset set, that is, SL-PRS RE offset set = {0, 6, 3, 9, 1, 7, 4, 10, 2, 8, 5, 11}.

[0145] The present disclosure proposes a sidelink time slot structure, in which resources for SCI transmission and resources for associated SL-PRS transmission are multiplexed in FDM or TDM manner. The resources for SCI transmission may be in the SCI region, the resources for associated SL-PRS transmission may be in the SL-PRS region, and the SCI region and the associated SL-PRS region are FDM or TDM-ed.

[0146] In order to multiplex the SCI region (which may also be referred to as the first region) with the associated SL-PRS region (which may also be referred to as the second region) in the sidelink slot structure, the sidelink slot structure may be configured or preconfigured to the UE. For a UE in resource allocation mode 1 (e.g. Figure 1 UE 101-A in the sidelink, the sidelink time slot structure may be determined by the network (e.g., LMF ( Figure 1 not shown) or BS (e.g. Figure 1 BS102 in the UE) or by another UE (e.g. Figure 1 For UE 101-B in resource allocation mode 2 (e.g. Figure 1 101-C), the sidelink time slot structure may be pre-configured to the UE by the LMF or BS, or by another UE (e.g. Figure 1 UE 101-D) configuration in.

[0147] Configuration information (or pre-configuration information, hereinafter in the present disclosure, configuration information and pre-configuration information may be used interchangeably where appropriate) may be associated with an SCI region, which includes resources for SCI transmission (which includes physical sidelink control channel (PSCCH) transmission, physical sidelink shared channel (PSSCH) transmission, or both). The SCI region may be a region including one or more resources for SCI transmission. For example, the SCI may include a first-stage SCI that may be transmitted on the PSCCH, the SCI may also include a second-stage SCI that may be transmitted on the PSSCH, or both. The SCI may indicate SL-PRS transmission on the SL-PRS region. The resources used for the SCI region may include one or more subchannels in the frequency domain or one or more symbols in the RB and time domain, and may carry one or more SCI transmissions. The resources used for SCI transmission may also be named as an SCI resource set or the like.

[0148] Configuration information may be associated with a SL-PRS region that includes resources for SL-PRS transmission. A SL-PRS region may be a region that includes one or more resources for SL-PRS transmission. Resources for a SL-PRS region may include one or more subchannels in the frequency domain or RBs and one or more symbols in the time domain, and may carry several SL-PRS transmissions. Resources for SL-PRS transmission may also be named as SL-PRS resource sets or the like. Figure 5C A specific example is described in the embodiments of the present invention.

[0149] As mentioned above Figure 2 and 3 The configuration information may include different elements. For example, the configuration information includes at least one of the following: one or more AGC symbols; and one or more Rx-Tx transition symbols (which may also be named as gap symbols). When multiple UEs perform SCI transmission and associated SL-PRS transmission in the same time slot, the configuration information may help avoid resource conflicts.

[0150] Figure 5A and 5B A diagram illustrating a sidelink timeslot structure according to some embodiments of the present disclosure. Figure 5C The structure of the SL-PRS resource set according to some embodiments of the present disclosure is described. Figure 5A and 5B In the 10-bit 4-bit time slot, there are 14 symbols in a time slot, which are marked by #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, and #13. There are six subchannels in the frequency domain, which are marked by subchannel #0, subchannel #1, subchannel #2, subchannel #3, subchannel #4, and subchannel #5.

[0151] This disclosure uses Figures 5A to 5C As an example, the configuration information for a set of SCI region and SL-PRS region pairs is further explained. For a pair of SCI region and SL-PRS region, the configuration information may include at least one of the following:

[0152] - Indicates the area used for SCI (e.g. Figure 5A A set of indications of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources within the SCI region 501, SCI region 502 or SCI region 503 in the SCI region. The set of time domain resource indices may include one or more symbol indices. In some embodiments, the set of frequency domain resource indices may include one or more subchannel indices or one or more RB indices within the SCI region. Alternatively, in some other embodiments, when the time domain resources of the SCI region are continuous, the set of indications may indicate the index of the time domain resource with the minimum index value (or the maximum index value) in this SCI region and the length of all continuous time domain resources. Similarly, when the frequency domain resources of the SCI region are continuous, the set of indications may indicate the index of the frequency domain resource with the minimum index value (or the maximum index value) in this SCI region and the length of all continuous frequency domain resources.

[0153] For example, in Figure 5A In some embodiments, the indexes of subchannel #0 and subchannel #1 and the indexes of symbol #1 and symbol #2 are indicated as the SCI region 501 for SCI transmission. The indexes of subchannel #2 and subchannel #3 and the indexes of symbol #1 and symbol #2 are indicated as the SCI region 502 for SCI transmission. The indexes of subchannel #4 and subchannel #5 and the indexes of symbol #1 and symbol #2 are indicated as the SCI region 503 for SCI transmission.

[0154] exist Figure 5A In some other embodiments of the present invention, the index of subchannel #0 and the length of two subchannels, and the index of symbol #1 and the length of two symbols are indicated as the SCI region 501 for SCI transmission. The index of subchannel #3 and the length of two subchannels, the index of symbol #1 and the length of two symbols are indicated as the SCI region 502 for SCI transmission. The index of subchannel #4 and the length of two subchannels, the index of symbol #1 and the length of two symbols are indicated as the SCI region 503 for SCI transmission.

[0155] - The total number of resources used for the set of SCI transmissions carried in the SCI region and the size of the resources used for each SCI transmission in the set of SCI transmissions. Within each SCI region, there may be one or more SCI transmissions, which may include PSCCH resources, PSSCH resources, or both PSCCH resources and PSSCH resources, and each SCI transmission may occupy one SCI resource set. Thus, the SCI region includes several SCI resource sets for the set of SCI transmissions. For example, in Figure 5A In the SCI region 501 in FIG. 5 , the total number of frequency domain resources is two subchannels, and the size of the resource used for each SCI transmission is one subchannel. Therefore, based on this configuration information, it can be determined that the SCI region includes two SCI transmissions.

[0156] -The total number of resources used for the set of SCI transmissions carried in the SCI region and the total number of SCI transmissions in the set of SCI transmissions. Fig. 9 In the example shown in , the SCI region 903 includes two subchannels (i.e., subchannels #0 and #9), and the total number of SCI transmissions in the SCI region 903 is 6. Therefore, based on this configuration information, it can be determined that each SCI transmission occupies 1 / 3 of the subchannel. For another example, the total number of frequency domain resources used for the set of SCI transmissions may be one subchannel, and the set of SCI transmissions includes 2 SCI transmissions. Therefore, based on this configuration information, it can be determined that the frequency domain resources used for each SCI transmission may include half a subchannel. Assuming that a subchannel includes 10 RBs, each SCI transmission may include 5 RBs. In another example, the total number of frequency domain resources used for the set of SCI transmissions may also be represented by RBs.

[0157] - indicates the area used for SL-PRS (e.g. Figure 5A An indication of a set of time domain resource indices and a set of frequency domain resource indices for one or more resources within SL-PRS region 511, SL-PRS region 512, or SL-PRS region 513 in the SL-PRS region 511. The set of time domain resource indices may include one or more symbol indices. The set of frequency domain resource indices may include one or more subchannel indices or one or more RB indices. Figure 5A, subchannel #0 to subchannel #5 on symbol #4 and symbol #5 are indicated as SL-PRS region 511 for SL-PRS transmission. The indication may include indexes of symbol #4 and symbol #5, and also include indexes of subchannel #0, subchannel #1, subchannel #2, subchannel #3, subchannel #4, and subchannel #5 for resources within SL-PRS region 511. Subchannel #0 to subchannel #5 on symbol #7 and symbol #8 are indicated as SL-PRS region 512 for SL-PRS transmission. Subchannel #0 to subchannel #5 on symbol #10 and symbol #11 are indicated as SL-PRS region 513 for SL-PRS transmission.

[0158] Alternatively, in the case where the time domain resources of the SL-PRS region are continuous, the set of indications may indicate the index of the time domain resource with the minimum index value (or the maximum index value) in this SCI region and the length of all continuous time domain resources. Similarly, in the case where the frequency domain resources of the SL-PRS region are continuous, the set of indications may indicate the index of the frequency domain resource with the minimum index value (or the maximum index value) in this SCI region and the length of all continuous frequency domain resources. The indication may include the index of symbol #4 and 2 symbols and the index of subchannel #0 and 6 subchannels for resources within the SL-PRS region 511.

[0159] - Comb structure size of one or more SL-PRS groups. Figure 5A In , the region including frequency domain resources from subchannels #0 to #5 and time domain resources from symbol #4 to symbol #5 is indicated as SL-PRS region 511 for transmitting a SL-PRS group with a comb structure size of 2. The region including frequency domain resources from subchannels #0 to #5 and time domain resources from symbol #7 to symbol #8 is indicated as SL-PRS region 512 for transmitting a SL-PRS group with a comb structure size of 2. The region including frequency domain resources from subchannels #0 to #5 and frequency domain resources from symbol #10 to symbol #11 is indicated as SL-PRS region 513 for transmitting a SL-PRS group with a comb structure size of 2. In Figure 5A In each SL-PRS region of the embodiment, multiple groups of SL-PRS resources are assigned with the same comb structure size and different RE offset values, that is, the multiple groups of SL-PRS resources in each SL-PRS region are orthogonal in the time domain and the frequency domain.

[0160] - A set of time domain resource indices for one or more SL-PRS groups. Figure 5C The time domain resource indices of SL-PRS resource set #531-1 shown in are symbol #4 and symbol #5.

[0161] - A set of frequency domain resource indices for one or more SL-PRS groups. Figure 5A The frequency domain resource indexes of the SL-PRS resource set included in the SL-PRS region 511 shown in FIG. 5 are subchannel #0, subchannel #1, subchannel #2, subchannel #3, subchannel #4, and subchannel #5.

[0162] - A set of comb structure sizes for one or more SL-PRS groups. For example, Figures 5A to 5C For the SL-PRS resource set on symbol #4 and symbol #5, the comb structure size is 2. For the SL-PRS resource set on symbol #7 and symbol #8, the comb structure size is 2. For the SL-PRS resource set on symbol #10 and symbol #11, the comb structure size is 2. The set of comb structure sizes may include {2, 2, 2}. Although in Figures 5A to 5C Only one comb structure size is specified in , but other comb structure sizes are also specified, such as Figure 6 4. Fig.10 12 in . Other values ​​of the comb size and other values ​​of the sign may also be used where appropriate.

[0163] - A set of RE offset values ​​for one or more SL-PRS groups. For example, for the SL-PRS resource set on symbol #4 and symbol #5, the set of RE offsets is {0,1}. For the SL-PRS resource set on symbol #7 and symbol #8, the set of RE offsets is {0,1}. For the SL-PRS resource set on symbol #10 and symbol #11, the set of RE offsets is {0,1}. Other set RE offset values ​​for one or more SL-PRS groups may refer to Figures 4A to 4I Those shown in .

[0164] - The bandwidth of the sidelink slot structure in units of subchannels or RBs. For example, Figure 5A The bandwidth of the sidelink time slot structure is 6 sub-channels.

[0165] It should be noted that the above detailed values ​​are merely exemplary, and the detailed values ​​in the configuration information may include other values.

[0166] The configuration information may also indicate the association relationship between the SCI area and the SL-PRS area. For example, one SCI area is paired with one SL-PRS area. Figure 5A, SCI region 501 is paired with SL-PRS region 511, SCI region 502 is paired with SL-PRS region 512, SCI region 503 is paired with SL-PRS region 513, and so on. This relationship may not be explicitly indicated, and may be determined by the UE through identification information of the region, such as regions with the same last number (or with the same label, etc.) are paired. For another example, SCI region #1 is paired with SCI region #1, or the like. Alternatively, the configuration information may explicitly indicate the association relationship, such as providing an additional indication for indicating that SCI region #1 is associated with SCI region #1, or the like.

[0167] For a pair of an SCI region and an SL-PRS region, the configuration information may further include at least one of the following:

[0168] - A set of indications of one or more symbols used for AGC in the sidelink slot structure. Figure 5A In the example, the AGC symbol may include symbols #0, #3, #6, and #9. Alternatively, the AGC symbol may not be indicated, and the AGC symbol may be positioned before the SCI region and the SL-PRS region by default. Figure 5A In the figure, before the SCI area 501, 502 or 503 and before the SL-PRS area 511, 512 or 513, there are symbols #0, #3, #6 and #9, which are considered to be AGC symbols without specific indication.

[0169] - A set of one or more symbols used for the UE's receive-transmit (Rx-Tx) transition. The symbols may also be referred to as gap symbols or other names. For example, in Figure 5A , symbol #13 is indicated as the Rx-Tx transition symbol.

[0170] Regarding resources not indicated in the configuration information, they may be unoccupied. Figure 5A In symbol #12, the resources from subchannel #0 to subchannel #5 are not occupied.

[0171] Solution 1

[0172] In solution 1, the SCI region is TDMed with the associated SL-PRS region in the sidelink timeslot structure. Figures 5A to 6 As an example, the configuration information is further explained. For example, in Figure 5A In the figure, the SCI area 501 and the SL-PRS area 511 perform TDM, the SCI area 502 and the SL-PRS area 512 perform TDM, and the SCI area 503 and the SL-PRS area 513 perform TDM.

[0173] In one SCI region, there may be one or more SCI transmissions, and there may be the same number of SCI resource sets used for SCI transmissions. The SCI resource sets may be FDMed by multiple UEs for their own SCI transmissions, and each SCI resource set may be used by a UE to perform an SCI transmission, thereby indicating an associated SL-PRS transmission on a corresponding SL-PRS resource set in the SL-PRS region. Figure 5A In the SCI area in the , there are two SCI resource sets in each SCI area, and Figure 5B That is, in SCI region 501, there are two SCI transmissions, and the SCI transmission resource set performs FDM in the SCI region, as can be seen, as shown in FIG. Figure 5B The SCI transmission resource 521 and the SCI transmission resource 522 shown in FIG. Figure 5A FDM is performed in the SCI region 501 shown in FIG. Figure 5B The SCI transmission resources 523 and SCI transmission resources 524 shown in FIG. Figure 5A The FDM is performed in the SCI region 502 shown in FIG. Figure 5B The SCI transmission resources 525 and SCI transmission resources 526 shown in FIG. Figure 5A In the SCI transmission resource 503 shown in FIG. 1 , FDM is performed. That is, Figure 5A The SCI resource sets in the SCI regions 501, 502 and 503 in FIG. 5 can be FDMed by a total of 6 UEs, such as Figure 5B Displayed in.

[0174] In some embodiments, the total number of SCI transmissions in an SCI region is equal to the comb structure size of the SL-PRS group in the associated SL-PRS region. The configuration information configures the same number for the total number of SCI transmissions in an SCI region and the comb structure size of the SL-PRS group in the associated SL-PRS region. For example, in Figure 5A There are 2 SCI transmissions in the SCI region 501 in the SL-PRS region 501, and correspondingly, the comb structure size of the SL-PRS group for the SL-PRS region 511 is 2. The comb structure size indicates the total number of SL-PRS groups in the SL-PRS region. For example, a comb structure size of 2 means that there are two SL-PRS groups in the SL-PRS region, and the SL-PRS RE offsets can be 0 and 1, respectively.

[0175] Figure 5C The SL-PRS resource sets on two symbols in the time domain (i.e., SL-PRS resource sets #531-1 and #531-2) and one RB in a subchannel in the frequency domain (i.e., the SL-PRS resource set within SL-PRS resource 531, as shown in FIG. Figure 5BOne RB contains 12 REs, which are marked by RE index #0, RE index #1, ..., RE index #11.

[0176] according to Figure 4A , where the total number of SL-PRS symbols is 2 and the comb structure size is 2, for each RB on symbol #4 to symbol #5 and subchannel #0 to subchannel #5, in the case where the SL-PRS RE offset set = 0, the UE (e.g., UE 101-A) can determine the SL-PRS resource set 531-1 including the REs with the dotted block. Therefore, the UE can Figure 5B 1-1 to indicate, for each RB in SL-PRS resource set 531, an associated SL-PRS transmission on SL-PRS resource set #531-1. Another UE (e.g., UE 101-B) may determine SL-PRS resource set #531-2 that includes REs shown as white blocks. Another UE may transmit SCI on SCI resource 522 to indicate, for each RB in SL-PRS resource set 531, an associated SL-PRS transmission on SL-PRS resource set #531-2.

[0177] In summary, at the UE side, after receiving the configuration information, the UE may determine the sidelink time slot structure, which may include at least one pair of SCI regions and SL-PRS regions. Figure 5A Taking the SCI region 501 in FIG. 1 as an example, there are two SCI transmissions in the SCI region 501, and therefore, two UEs (eg, UE 101-A and UE 101-B) may both transmit their SCI transmissions in the SCI region 501. Figure 5B , SCI region 501 includes two SCI transmission resources 521 and 522. UE 101-A may transmit SCI transmissions using resources included in SCI transmission resource 521. UE 101-A may transmit SCI transmissions using resources included in SCI transmission resource 522. Based on the comb structure size (e.g., 2) and the RE offset value (e.g., 0), UE 101-A may use the following example: Figure 5C 1 (including the REs shown as blocks with left dashed lines) to perform SL-PRS transmission. Similarly, UE 101-B may determine the REs included in Figure 5C UE 101-B may transmit an SCI on SCI resource 522 to indicate an associated SL-PRS transmission on SL-PRS resource set #531-2. UE 101-B may transmit an SCI on SCI resource 522 to indicate an associated SL-PRS transmission on SL-PRS resource set #531-2.

[0178] In some embodiments, after determining the sidelink timeslot structure, UE1 (which may be a Tx UE) may transmit SCI information to other UEs on one or more resources of the SCI region, and the SCI may include at least one of the following:

[0179] - a set of indications of time domain resources of one or more SL-PRS groups;

[0180] - a set of indications of frequency domain resources of one or more SL-PRS groups;

[0181] - a set of comb structure sizes for one or more SL-PRS groups; or

[0182] - A set of RE offset values ​​for one or more SL-PRS groups.

[0183] Then, the Tx UE may transmit the SL-PRS group on one or more resources within the SL-PRS region.

[0184] Correspondingly, at the Rx UE side, the Rx UE may receive SCI transmission on one or more resources within the SCI region; and receive one or more SL-PRS groups on one or more resources within the SL-PRS region.

[0185] Figure 6 The sidelink time slot structure according to some embodiments of the present disclosure is described. Figure 6 Embodiments relate to a sidelink timeslot structure of an SCI region for TDM with its associated SL-PRS region.

[0186] like Figure 6 As shown in FIG. 1 , there are 14 symbols in one slot in the time domain, which are labeled from #0 to #13, respectively. There are eight subchannels in the frequency domain, which are labeled from subchannel #0 to channel #7, respectively.

[0187] Figure 6 The set of time domain resource indexes of the SCI region 601 in the SCI region 601 includes symbol #1 and symbol #2; the set of frequency domain resource indexes of the SCI region 601 includes subchannel #0, subchannel #1, subchannel #2, and subchannel #3; and the total number of SCI transmissions in the SCI region 601 is 4. In the frequency domain, multiple SCI transmissions can equally share RBs in all subchannels, and the RBs used for one SCI transmission can be calculated as follows: the total number of RBs used for one SCI transmission = 1 / 4 of the total number of RBs of subchannel #0, subchannel #1, subchannel #2, and subchannel #3. For example, the first SCI transmission can use all RBs of subchannel #0; the second SCI transmission can use all RBs of subchannel #1; the third SCI transmission can use all RBs of subchannel #2; and the fourth SCI transmission can use all RBs of subchannel #3.

[0188] Figure 6 The set of time domain resource indexes of the SL-PRS region 611 in the SCI region 601 includes symbol #4, symbol #5, symbol #6, and symbol #7; the set of frequency domain resource indexes of the SL-PRS region 611 includes subchannel #0, subchannel #1, subchannel #2, and subchannel #3; and the comb structure size is 4. The comb structure size of the SL-PRS group of the SL-PRS region 611 is equal to the total number of SCI transmissions in the SCI region 601.

[0189] Figure 6 The set of time domain resource indexes of the SCI region 602 includes symbol #1 and symbol 2; the set of frequency domain resource indexes of the SCI region 602 includes subchannel #4 and subchannel #5; and the total number of SCI transmissions in the SCI region 602 is 2.

[0190] Figure 6 The set of time domain resource indexes of the SL-PRS area 612 includes symbol #4, symbol #5, symbol #6 and symbol #7; the set of frequency domain resource indexes of the SL-PRS area 612 includes subchannel #4, subchannel #5, subchannel #6 and subchannel #7; and the comb structure size is 2.

[0191] Figure 6 The set of time domain resource indexes of the SCI region 603 includes symbol #1 and symbol 2; the set of frequency domain resource indexes of the SCI region 603 includes subchannel #6 and subchannel #7; and the total number of SCI transmissions in SCI region #3 is 2.

[0192] Figure 6 The set of time domain resource indexes of the SL-PRS area 613 in the SL-PRS area 613 includes symbol #9, symbol #10, symbol #11 and symbol #12; the set of frequency domain resource indexes of the SL-PRS area 613 includes subchannel #4, subchannel #5, subchannel #6 and subchannel #7; and the comb structure size is 2.

[0193] Optionally, the configuration information further indicates the index of the AGC symbol, which includes symbol #0, symbol #3 and symbol #8; the index of the Rx-Tx transition symbol, which is symbol #13, and indicates the index of the bandwidth of this SL-PRS time slot in units of subchannels, which includes: subchannel #0, subchannel #1, subchannel #2, subchannel #3, subchannel #4, subchannel #5, subchannel #6 and subchannel #7.

[0194] In summary, for Figure 6 The configuration information of the sidelink time slot structure in may include the following:

[0195] "SL-PRS slot structure configuration #1,

[0196] {

[0197] SCI area 601, subchannel index, symbol index, total number of SCI transmissions

[0198] {

[0199] Subchannel #0, Subchannel #1, Subchannel #2, Subchannel #3,

[0200] Symbol #1, Symbol #2

[0201] Total number of SCI transmissions = 4 (e.g., total number of RBs for each SCI transmission = subchannel #0, subchannel #1,

[0202] 1 / 4 of the total number of RBs of subchannel #1, subchannel #2, and subchannel #3)

[0203] }

[0204] SL-PRS area 611, subchannel index, symbol index, comb structure type

[0205] {

[0206] Subchannel #0, Subchannel #1, Subchannel #2, Subchannel #3,

[0207] Symbol #4, Symbol #5, Symbol #6, Symbol #7,

[0208] Comb size = 4

[0209] }

[0210] SCI area 602, subchannel index, symbol index, total number of SCI transmissions

[0211] {

[0212] Subchannel #4, Subchannel #5,

[0213] Symbol #1, Symbol #2

[0214] Total number of SCI transmissions = 2 (e.g., total number of RBs used for each SCI transmission = 1 / 2 of total number of RBs of subchannel #4 and subchannel #5)

[0215] }

[0216] SL-PRS area 612, subchannel index, symbol index, comb structure type

[0217] {

[0218] Subchannel #4, Subchannel #5, Subchannel #6, Subchannel #7,

[0219] Symbol #4, Symbol #5, Symbol #6, Symbol #7,

[0220] Comb size = 2

[0221] }

[0222] SCI area 603, subchannel index, symbol index, total number of SCI transmissions

[0223] {

[0224] Subchannel #6, Subchannel #7,

[0225] Symbol #1, Symbol #2

[0226] Total number of SCI transmissions = 2 (e.g., total number of RBs for each SCI transmission = subchannel #6 and subchannel #7).

[0227] 1 / 2 of the total number of RBs of channel #7)

[0228] }

[0229] SL-PRS area 613, subchannel index, symbol index, comb structure type

[0230] {

[0231] Subchannel #4, Subchannel #5, Subchannel #6, Subchannel #7,

[0232] Symbol #9, Symbol #10, Symbol #11, Symbol #12,

[0233] Comb size = 2

[0234] }

[0235] AGC Symbol Index

[0236] {Symbol #0, Symbol #3, Symbol #8}

[0237] Rx-Tx transition symbol index

[0238] {Symbol #13}

[0239] The bandwidth of this SL-PRS slot in subchannels,

[0240] {

[0241] Subchannel #0, Subchannel #1, Subchannel #2, Subchannel #3, Subchannel #4, Subchannel #5, Subchannel #6, Subchannel #7

[0242] }

[0243] }"

[0244] Solution 2

[0245] In solution 2, the SCI region is FDMed with the associated SL-PRS region.

[0246] The configuration information is similar to the configuration information in solution 1, and the difference is that the SCI area is FDM-ed with the associated SL-PRS area in the sidelink time slot structure, and the present disclosure uses Figures 7A to 7C The configuration information is further explained as an example.

[0247] Fig. 7A and 7B The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0248] There are 14 symbols in one slot in the time domain, which are labeled from #0 to #13, respectively. There are six subchannels in the frequency domain, which are labeled from subchannel #0 to subchannel #5, respectively.

[0249] According to the configuration information, symbol #0 and symbol #4 in all subbands are AGC symbols, symbol #3 and symbol #13 in all subbands are Rx-Tx transition symbols, and symbol #9 to symbol #11 in all subbands are unoccupied symbols. Subchannel #0 and subchannel #5 on symbol #1 and symbol #2 are indicated as SCI regions 701 for transmitting SCI to indicate SL-PRS transmission on SL-PRS region 711. Subchannel #0 and subchannel #5 on symbols #5 to #8 are indicated as SCI regions 702 for transmitting SCI to indicate SL-PRS transmission on SL-PRS region 712. It can be seen that the SCI region is FDMed with the associated SL-PRS region.

[0250] In addition, the frequency resources used for one SCI region may be discontinuous and located on both sides of the associated SL-PRS region. For example, SCI region 701 is discontinuous in the frequency domain and is located on both sides of the associated SL-PRS region 711. SCI region 702 is discontinuous in the frequency domain and is located on both sides of the associated SL-PRS region 712.

[0251] Taking SCI area 702 as an example, there are four SCI transmissions in SCI area 702, and the resources used for the four SCI transmissions are FDM-based, such as Figure 7B. Therefore, the resource set for the first SCI transmission includes the first half subchannel of subchannel #0 from symbol #5 to symbol #8, that is, resource set 721. The resource set for the second SCI transmission includes the second half subchannel of subchannel #0 from symbol #5 to symbol #8, that is, resource set 722. The resource set for the third SCI transmission includes the first half subchannel of subchannel #5 from symbol #5 to symbol #8, that is, resource set 723. The resource set for the fourth SCI transmission includes the second half subchannel of subchannel #5 from symbol #5 to symbol #8, that is, resource set 724. Regarding the half-subchannel, assuming that one subchannel includes 10 RBs, then RB#0 to RB#4 are the first half subchannels of subchannel #0, and RB#5 to RB#9 are the second half subchannels of subchannel #0.

[0252] According to the configuration information, subchannel #1 to subchannel #4 on symbol #1 and symbol #2 are indicated as SL-PRS area 711, and the comb structure size is 2. Subchannel #1 to subchannel #4 on symbol #5 to symbol #8 are indicated as SL-PRS area 712, and the comb structure size is 4.

[0253] Figure 7C The structure of the SL-PRS resource set according to some embodiments of the present disclosure is described. Specifically, Figure 7C The SL-PRS resource sets on symbols #5 to #8 in the time domain (i.e., SL-PRS resource sets #731-1 to #731-4) and one RB in the frequency domain (i.e., the SL-PRS resource set within SL-PRS resource 732, as shown in FIG. Figure 7B One RB contains 12 REs, which are marked by RE index #0, RE index #1, ..., RE index #11.

[0254] according to Figure 4E , where the total number of SL-PRS symbols is 4 and the comb structure size is 4, for each RB on symbol #5 to symbol #8 and subchannel #0 to subchannel #5, in the case where the SL-PRS RE offset set = 0, UE1 (e.g., UE 101-A) may determine SL-PRS resource set #732-1 as the RE with the left dashed line. Therefore, UE1 may transmit an SCI transmission on SCI resource set 721 to indicate the associated SL-PRS transmission on SL-PRS resource set #732-1 for each RB in SL-PRS resource 732.

[0255] Similarly, UE2 (e.g., UE 101-B) may determine the resources for SL-PRS transmission on symbols #5 to #8 (i.e., SL-PRS resource set #732-2) as REs shown as white blocks if comb structure size=4 and RE offset value=1. UE2 may transmit SCI transmission on SCI resource set 722 to indicate associated SL-PRS transmission on SL-PRS resource set #732-2 for each RB in SL-PRS resource 732. UE3 (e.g., UE 101-C) may determine the resources for SL-PRS transmission on symbols #5 to #8 (i.e., SL-PRS resource set #732-3) as REs shown as dots if comb structure size=4 and RE offset value=2. UE3 may transmit SCI transmission on SCI resource set 723 to indicate associated SL-PRS transmission on SL-PRS resource set #733-2 for each RB in SL-PRS resource 732. UE4 (e.g., UE 101-D) may determine the resources for SL-PRS transmission on symbols #5 to #8 (i.e., SL-PRS resource set #732-4) as the REs shown as the right dashed lines if comb structure size = 4 and RE offset value = 3. UE4 may transmit an SCI transmission on SCI resource set 724 to indicate the associated SL-PRS transmission on SL-PRS resource set #732-4 for each RB in SL-PRS resource 732.

[0256] exist Fig. 7A In the example, the frequency domain resources of the SCI region 701 include subchannel #0 and subchannel #5, and the frequency domain resources of the associated SL-PRS region include subchannel #1 to subchannel #4.

[0257] In some other scenarios, the frequency domain resources of the SCI region may be on one side of the associated SL-PRS region. Figure 8 Such a scenario is described below.

[0258] Figure 8 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0259] There are 14 symbols in one slot in the time domain, which are labeled from #0 to #13, respectively. There are six subchannels in the frequency domain, which are labeled from subchannel #0 to channel #5, respectively.

[0260] exist Figure 8The set of time domain resource indices of the SCI region marked by 801 in the example includes symbol #1 and symbol #2; the set of frequency domain resource indices of the SCI region 801 includes subchannel #0 and subchannel #2; and the total number of SCI transmissions in the SCI region 801 is 2. Figure 8 The set of time domain resource indexes of the SL-PRS region marked by 811 in FIG. 801 includes symbol #1 and symbol #2; the set of frequency domain resource indexes of the SL-PRS region 811 includes subchannel #2, subchannel #3, subchannel #4, and subchannel #5; and the comb structure size is 2. It can be seen that the frequency domain resources of the SCI region 801 are on one side of the associated SL-PRS region 802.

[0261] exist Figure 8 The set of time domain resource indexes of the SCI region marked by 802 in the example includes symbol #5, symbol #6, symbol #7, and symbol #8; the set of frequency domain resource indexes of the SCI region 802 includes subchannel #0 and subchannel #1; and the total number of SCI transmissions in SCI region #1 is 4. Figure 8 The set of time domain resource indexes of the SL-PRS region marked by 812 in FIG. 802 includes symbol #5, symbol #6, symbol #7, and symbol #8; the set of frequency domain resource indexes of the SL-PRS region 811 includes subchannel #2, subchannel #3, subchannel #4, and subchannel #5; and the comb structure size is 4. It can be seen that the frequency domain resources of the SCI region can be on one side of the associated SL-PRS region. It can be seen that the frequency domain resources of the SCI region 802 are on one side of the associated SL-PRS region 812.

[0262] Fig. 9 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0263] There are 14 symbols in one slot in the time domain, which are labeled from #0 to #13, respectively. There are eight subchannels in the frequency domain, which are labeled from subchannel #0 to channel #7, respectively.

[0264] Fig. 9 The set of time domain resource indexes of the SCI region 901 in the SCI region 901 includes symbol #1, symbol #2, symbol #3, and symbol #4; the set of frequency domain resource indexes of the SCI region 901 includes subchannel #0 and subchannel #3; and the total number of SCI transmissions in the SCI region 901 is 2. In the frequency domain, multiple SCI transmissions can equally share RBs in all subchannels, and the RBs used for one SCI transmission can be calculated as follows: the total number of RBs used for one SCI transmission = 1 / 2 of the total number of RBs of subchannel #0 and subchannel #3. For example, the first SCI transmission can use all RBs of subchannel #0; and the second SCI transmission can use all RBs of subchannel #3.

[0265] Fig. 9 The set of time domain resource indexes of the SL-PRS area 911 includes symbol #1, symbol #2, symbol #3 and symbol #4; the set of frequency domain resource indexes of the SL-PRS area 911 includes subchannel #1 and subchannel #2; and the comb structure size is 2.

[0266] Fig. 9 The set of time domain resource indexes of the SCI area 902 includes symbol #1, symbol #2, symbol #3 and symbol #4; the set of frequency domain resource indexes of the SCI area 902 includes subchannel #4 and subchannel #5; and the total number of SCI transmissions in the SCI area 902 is 4.

[0267] Fig. 9 The set of time domain resource indexes of the SL-PRS area 912 includes symbol #1, symbol #2, symbol #3 and symbol #4; the set of frequency domain resource indexes of the SL-PRS area 912 includes subchannel #6, subchannel #7, subchannel #8 and subchannel #9; and the comb structure size is 4.

[0268] Fig. 9 The set of time domain resource indexes of the SCI region 903 in the SCI region 903 includes symbol #7, symbol #8, symbol #9, symbol #10, symbol #11 and symbol #12; the set of frequency domain resource indexes of the SCI region 903 includes subchannel #0 and subchannel #9; and the total number of SCI transmissions in the SCI region 903 is 6. Each SCI transmission occupies 1 / 3 of the subchannel. Regarding a subchannel including 12 RBs, the total number of RBs used for one SCI transmission = (1 / 3) × 12 = 4. Therefore, RB #0 to RB #3 are the first 1 / 3 subchannels of subchannel #0, RB #4 to RB #7 are the middle 1 / 3 subchannels of subchannel #0, and RB #8 to RB #11 are the last 1 / 3 subchannels of subchannel #0.

[0269] Fig. 9 The set of time domain resource indexes of the SL-PRS area 913 in the SL-PRS area 913 includes symbol #7, symbol #8, symbol #9, symbol #10, symbol #11 and symbol #12; the set of frequency domain resource indexes of the SL-PRS area 913 includes subchannel #1, subchannel #2, subchannel #3, subchannel #4, subchannel #5, subchannel #6, subchannel #7 and subchannel #8; and the comb structure size is 6.

[0270] The configuration information may further indicate the index of the AGC symbol, which includes symbol #0 and symbol #6; the index of the Rx-Tx transition symbol, which includes symbol #5 and symbol #13, and the index of the bandwidth of this SL-PRS time slot in units of subchannels, which includes: subchannel #0, subchannel #1, subchannel #2, subchannel #3, subchannel #4, subchannel #5, subchannel #6, subchannel #7, subchannel #8 and subchannel #9.

[0271] In summary, for Fig. 9 The configuration information of the sidelink time slot structure in may include the following:

[0272] "SL-PRS slot structure configuration #2,

[0273] {

[0274] SCI area 901, subchannel index, symbol index, total number of SCI transmissions

[0275] {

[0276] Subchannel #0, Subchannel #3,

[0277] Symbol #1, Symbol #2, Symbol #3, Symbol #4

[0278] Total number of SCI transmissions = 2 (e.g., total number of RBs used for each SCI transmission = 1 / 2 of total number of RBs of subchannel #0 and subchannel #3)

[0279] }

[0280] SL-PRS area 911, subchannel index, symbol index, comb structure type

[0281] {

[0282] Subchannel #1, Subchannel #2,

[0283] Symbol #1, Symbol #2, Symbol #3, Symbol #4

[0284] Comb size = 2

[0285] }

[0286] SCI area 902, subchannel index, symbol index, total number of SCI transmissions

[0287] {

[0288] Subchannel #4, Subchannel #5,

[0289] Symbol #1, Symbol #2, Symbol #3, Symbol #4

[0290] Total number of SCI transmissions = 4 (e.g., each SCI is transmitted on half a subchannel) (i.e., total number of RBs for one SCI transmission = 1 / 4 of the total number of RBs of subchannel #4 and subchannel #5)

[0291] }

[0292] SL-PRS area 912, subchannel index, symbol index, comb structure type

[0293] {

[0294] Subchannel #6, Subchannel #7, Subchannel #8, Subchannel #9,

[0295] Symbol #1, Symbol #2, Symbol #3, Symbol #4

[0296] Comb size = 4

[0297] }

[0298] SCI area 903, subchannel index, symbol index, total number of SCI transmissions

[0299] {

[0300] Subchannel #0, Subchannel #9,

[0301] Symbol #7, Symbol #8, Symbol #9, Symbol #10, Symbol #11, Symbol #12

[0302] Total number of SCI transmissions = 6 (eg, each SCI is transmitted on 1 / 3 of the subchannel) (ie, total number of RBs used for SCI transmission = 1 / 6 of total number of RBs of subchannel #0 and subchannel #9)

[0303] }

[0304] SL-PRS area 913, subchannel index, symbol index, comb structure type

[0305] {

[0306] Subchannel #1, Subchannel #2, Subchannel #3, Subchannel #4, Subchannel #5, Subchannel #6, Subchannel

[0307] #7, subchannel #8,

[0308] Symbol #7, Symbol #8, Symbol #9, Symbol #10, Symbol #11, Symbol #12

[0309] Comb size = 6

[0310] }

[0311] AGC Symbol Index

[0312] {Symbol #0, Symbol #6}

[0313] Rx-Tx transition symbol index

[0314] {Symbol #5, Symbol #13}

[0315] The bandwidth of this SL-PRS slot in subchannels,

[0316] {

[0317] Subchannel #0, Subchannel #1, Subchannel #2, Subchannel #3, Subchannel #4, Subchannel #5, Subchannel #6, Subchannel #7, Subchannel #8, Subchannel #9

[0318] }

[0319] }"

[0320] In some embodiments, the comb structure size may be 12. Fig.10 Such an embodiment is presented.

[0321] Fig.10 The sidelink time slot structure according to some embodiments of the present disclosure is described.

[0322] There are 14 symbols in one slot in the time domain, which are labeled from #0 to #13, respectively. There are 10 subchannels in the frequency domain, which are labeled from subchannel #0 to channel #9, respectively.

[0323] Fig.10 The set of time domain resource indexes of the SCI region 1001 in the SCI region 1001 includes symbol #1 to symbol #13; the set of frequency domain resource indexes of the SCI region 1001 includes subchannel #0 and subchannel #9; and the total number of SCI transmissions in the SCI region 1011 is 12. In the SCI region, each SCI transmission occupies 1 / 6 of a subchannel. Fig.10 The set of time domain resource indexes of the SL-PRS region marked by 1011 in the 1011 includes symbol #1 to symbol #12; the set of frequency domain resource indexes of the SL-PRS region 1011 includes subchannel #2 to subchannel #8; and the comb structure size is 12. With respect to a subchannel including 12 RBs, the number of RBs used for SCI transmission = 2, RB #0 and RB #1 are the first 1 / 6 subchannels of subchannel #0, RB #2 and RB #3 are the second 1 / 6 subchannels of subchannel #0, and RB #10 and RB #11 are the last 1 / 6 subchannels of subchannel #0.

[0324] Fig.11 A simplified block diagram illustrating an exemplary apparatus for UCI transmission according to some embodiments of the present disclosure.

[0325] like Fig.11, an example of apparatus 1100 may include at least one processor 1104 and at least one transceiver 1102 coupled to the processor 1104. Apparatus 1100 may be a UE, a LMF, a BS, a RAN node, a MN, a SN, or any other device having similar functionality.

[0326] Although in this figure, elements such as at least one transceiver 1102 and processor 1104 are described in the singular, the plural is contemplated unless limitation to the singular is explicitly stated. In some embodiments of the present disclosure, the transceiver 1102 may be divided into two devices, such as a receive circuit system and a transmit circuit system. In some embodiments of the present disclosure, the device 1100 may further include an input device, a memory, and / or other components.

[0327] In some embodiments of the present disclosure, the device 1100 may be a UE. The transceiver 1102 and the processor 1104 may interact with each other to execute Figures 1 to 10 In some embodiments of the present disclosure, the device 1100 may be a network node. The transceiver 1102 and the processor 1104 may interact with each other to perform the operation of the UE described in any one of the embodiments. Figures 1 to 10 The operation of the network node described in any one of .

[0328] In some embodiments of the present disclosure, the device 1100 may further include at least one non-transitory computer-readable medium.

[0329] For example, in some embodiments of the present disclosure, the non-transitory computer-readable medium may store computer-executable instructions thereon to cause the processor 1104 to implement the method for the UE as described above. For example, when the computer-executable instructions are executed, the processor 1104 interacts with the transceiver 1102 to perform the Figures 1 to 10 Operation of the UE described in any one of .

[0330] In some embodiments of the present disclosure, a non-transitory computer-readable medium may store computer-executable instructions thereon to cause the processor 1104 to implement the method for a node as described above. For example, when the computer-executable instructions are executed, the processor 1104 interacts with the transceiver 1102 to perform Figures 1 to 10 The operation of a node described in any of .

[0331] The methods of the present disclosure may be implemented on a programmed processor. However, the controller, flow charts, and modules may also be implemented on a general or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit components, an integrated circuit, a hardware electronic or logic circuit such as a discrete component circuit, a programmable logic device, or the like. In general, any device having a finite state machine capable of implementing the flow charts shown in the figures may be used to implement the processing functions of the present disclosure.

[0332] Although the present disclosure has been described with specific embodiments of the present disclosure, it is apparent that many alternatives, modifications and variations will be apparent to those skilled in the art. For example, various components of the embodiments may be interchanged, added or replaced in other embodiments. In addition, all elements shown in each figure are not necessary for the operation of the disclosed embodiments. For example, a person skilled in the art of the disclosed embodiments will be able to make and use the teachings of the present disclosure by simply adopting the elements of the independent claims. Therefore, the embodiments of the present disclosure as set forth herein are intended to be illustrative, not restrictive. Various changes may be made without departing from the spirit and scope of the present disclosure.

[0333] In the present disclosure, for example, the relational terms of "first", "second" and the like can be used only to distinguish one entity or action from another entity or action, and do not necessarily require or imply any actual such relationship or order between these entities or actions. The term "comprises / comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including the list of elements not only includes those elements, but also includes other elements that are not clearly listed or inherent to this process, method, article or equipment. The elements starting with "one", "one" or the like do not exclude the presence of additional identical elements in the process, method, article or equipment including the elements without more restrictions. In addition, the term "another" is defined as at least the second or more. The terms "include", "have" and the like as used herein are defined as "include".

Claims

1. A user equipment UE, comprising: Transceiver; and a processor coupled to the transceiver and configured to: Obtaining configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of sidelink control information SCI transmissions, and wherein the one or more resources within the second region are used for one or more sidelink positioning reference signal SL-PRS groups associated with the set of SCI transmissions; and A sidelink timeslot structure is determined based on the configuration information.

2. The UE of claim 1, wherein the processor of the UE is configured to: transmitting an SCI transmission on the one or more resources within the first region; and The one or more SL-PRS groups are transmitted on the one or more resources within the second region.

3. The UE of claim 1, wherein the processor of the UE is configured to: receiving an SCI transmission on the one or more resources within the first region; and The one or more SL-PRS groups are received on the one or more resources within the second region.

4. The UE according to claim 2 or claim 3, wherein for a pair of areas within the set of area pairs, the SCI comprises at least one of the following: a set of indications of time domain resources of the one or more SL-PRS sets; a set of indications of frequency domain resources of the one or more SL-PRS groups; a set of comb structure sizes of the one or more SL-PRS sets; or A set of resource element RE offset values ​​for the one or more SL-PRS groups.

5. The UE according to claim 1, wherein for each pair of areas, the configuration information includes at least one of the following: an indication of a set of time domain resource indices and a set of frequency domain resource indices for the one or more resources in the first region; a total number of resources used for the set of SCI transmissions; The size of the resources used for each SCI transmission; a total number of SCI transmissions in the set of SCI transmissions; an indication of a set of time domain resource indices and a set of frequency domain resource indices for the one or more resources in the second region; the comb structure size of the one or more SL-PRS groups; A set of time domain resource indexes of the one or more SL-PRS groups; A set of frequency domain resource indexes of the one or more SL-PRS groups; a set of comb structure sizes of the one or more SL-PRS sets; A set of resource element RE offset values ​​for the one or more SL-PRS groups; or The bandwidth of the sidelink time slot structure is in units of sub-channels or resource blocks (RBs).

6. The UE of claim 5, wherein the set of time-domain resource indices comprises one or more symbol indices within the sidelink timeslot structure.

7. The UE according to claim 5, wherein the set of frequency-domain resource indexes includes one or more subchannel indexes or one or more resource block (RB) indexes within the sidelink timeslot structure. 8 . The UE according to claim 7 , wherein the one or more subchannel indices or the one or more RB indices are consecutive or non-consecutive. 9 . The UE according to claim 1 , wherein the one or more resources within the first region and the one or more resources within the second region are multiplexed in the frequency domain or the time domain.

10. The UE according to claim 1, wherein the configuration information further comprises at least one of the following: a set of indications of one or more symbols for automatic gain control, AGC, in said sidelink time slot structure; or A set of indications of one or more symbols for a receive-to-transmit transition for the UE.

11. The UE according to claim 1, wherein: Receiving the configuration information from a location management function LMF, a base station BS or another UE; or The configuration information is preconfigured to the UE.

12. The UE of claim 1 , wherein a first area of ​​a first pair of areas in the set of area pairs and a first area of ​​a second pair of areas in the set of area pairs are located in one of the following: One or more consecutive subchannels; One or more non-contiguous sub-channels; One or more consecutive RBs; or One or more non-contiguous RBs.

13. A network node, comprising: Transceiver; and a processor coupled to the transceiver and configured to: Determine configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions in the set of region pairs is associated with one or more resources in a first region and one or more resources in a second region, wherein the one or more resources in the first region are used for a set of sidelink control information SCI transmission, and wherein the one or more resources within the second region are used for one or more sidelink positioning reference signal SL-PRS groups associated with the set of SCI transmissions; and The configuration information is transmitted.

14. The network node according to claim 13, wherein for each pair of areas, the configuration information includes at least one of the following: an indication of a set of time domain resource indices and a set of frequency domain resource indices for the one or more resources in the first region; a total number of resources used for the set of SCI transmissions; The size of the resources used for each SCI transmission; a total number of SCI transmissions in the set of SCI transmissions; an indication of a set of time domain resource indices and a set of frequency domain resource indices for the one or more resources in the second region; the comb structure size of the one or more SL-PRS groups; A set of time domain resource indexes of the one or more SL-PRS groups; A set of frequency domain resource indexes of the one or more SL-PRS groups; a set of comb structure sizes of the one or more SL-PRS sets; A set of resource element RE offset values ​​for the one or more SL-PRS groups; or The bandwidth of the sidelink time slot structure is in units of sub-channels or resource blocks (RBs).

15. A method performed by a user equipment UE, comprising: Obtaining configuration information associated with a set of region pairs in the time domain and the frequency domain, wherein each pair of regions within the set of region pairs is associated with one or more resources within a first region and one or more resources within a second region, wherein the one or more resources within the first region are used for a set of sidelink control information SCI transmissions, and wherein the one or more resources within the second region are used for one or more sidelink positioning reference signal SL-PRS groups associated with the set of SCI transmissions; and A sidelink timeslot structure is determined based on the configuration information.

Images