Sidelink (SL) positioning method and apparatus, communication device, communication system and storage medium

Abstract

Disclosed in embodiments of the present disclosure are a sidelink (SL) positioning method and apparatus. The method comprises: sending first information, wherein the first information is used for indicating layer-2 capability information, related to the execution of SL positioning measurement, of a terminal. A terminal can send layer-2 capability, related to the execution of SL positioning measurement, of the terminal to the other terminals participating in the SL positioning measurement, an access network device and a core network device, so that the matched SL positioning measurement can be configured on the basis of the capability of the terminal, the communication efficiency of a system can be effectively improved, the accuracy of SL positioning measurement is improved, and the positioning efficiency is improved.

Description

Sidelink SL positioning method and device, communication equipment, communication system, storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a sidelink (SL) positioning method and apparatus, communication equipment, a communication system, and a storage medium. Background Art

[0002] Positioning based on the sidelink (SL) between terminals is called sidelink positioning, which includes sidelink absolute positioning, sidelink relative positioning, and ranging. Positioning methods include sidelink round-trip time delay (SL-RTT (RTT, Round-Trip Time)), sidelink arrival time difference (SL-TDOA (TDOA, Time Difference of Arrival, Arrival Time Difference)), sidelink arrival angle (SL-AOA (AOA, Angle of Arrival, Arrival Angle)), sidelink departure angle (SL-AOD (AOD, Angle of Departure)), SL carrier phase, etc. Absolute positioning is to determine the absolute coordinates of the terminal, relative positioning is to determine the coordinates of the terminal relative to a reference point, and ranging is to determine the distance and / or angle of the terminal relative to a reference point.

[0003] Ranging usually only involves ranging between two terminals, but absolute positioning and relative positioning may involve multiple terminals to participate in positioning.

[0004] Summary of the Invention

[0005] The embodiments of the present disclosure provide a sidelink (SL) positioning method and apparatus, a communication device, a communication system, and a storage medium.

[0006] The first aspect of the present disclosure provides a sidelink (SL) positioning method, which is performed by a terminal and includes:

[0007] First information is sent, where the first information is used to indicate layer 2 capability information of the terminal related to performing sidelink (SL) positioning measurement.

[0008] A second aspect of the present disclosure provides a terminal, including:

[0009] The transceiver module is used to send first information, where the first information is used to indicate the layer 2 capability information of the terminal related to performing side link SL positioning measurement.

[0010] The solution proposed in the embodiment of the present disclosure is to send the first information, which is used to indicate the layer 2 capability information of the terminal related to performing the side link SL positioning measurement. The terminal can send its own layer 2 capability related to performing the SL positioning measurement to the other terminals, access network devices and core network devices participating in the SL positioning measurement, so that the matching SL positioning measurement can be configured based on the terminal's capability, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0012] FIG1A is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0013] FIG1B is a schematic diagram of an SL positioning method provided by an embodiment of the present disclosure;

[0014] FIG2 is an interactive schematic diagram of a sidelink SL positioning method provided by an embodiment of the present disclosure;

[0015] FIG3A is a schematic diagram of a flow chart of a sidelink SL positioning method provided by an embodiment of the present disclosure;

[0016] FIG3B is a schematic diagram of a flow chart of a sidelink SL positioning method provided by an embodiment of the present disclosure;

[0017] FIG4 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0018] FIG5A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0019] FIG5B is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure provide a sidelink (SL) positioning method and apparatus, a communication device, a communication system, and a storage medium.

[0021] In a first aspect, an embodiment of the present disclosure provides a sidelink (SL) positioning method, which is performed by a terminal and includes:

[0022] First information is sent, where the first information is used to indicate layer 2 capability information of the terminal related to performing sidelink (SL) positioning measurement.

[0023] In the above embodiment, the terminal can send its own layer 2 capabilities related to performing SL positioning measurements to other terminals, access network devices and core network devices participating in the SL positioning measurement, so that matching SL positioning measurements can be configured based on the terminal's capabilities, which can effectively improve the communication efficiency of the system, improve the accuracy of side link positioning measurements, and improve positioning efficiency.

[0024] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes any one or more of the following information:

[0025] first indication information, where the first indication information is used to indicate a positioning mode supported by the terminal;

[0026] second indication information, where the second indication information is used to indicate a terminal role supported by the terminal;

[0027] third indication information, where the third indication information is used to indicate whether the terminal supports periodic reporting of the positioning measurement result;

[0028] Fourth indication information, where the fourth indication information is used to indicate whether the terminal supports reporting of the positioning measurement result based on event triggering;

[0029] fifth indication information, where the fifth indication information is used to indicate whether the terminal supports reporting a plurality of positioning measurement results in one measurement report;

[0030] Sixth indication information, where the sixth indication information is used to indicate whether the terminal supports a positioning response time of a first time length;

[0031] Seventh indication information, the seventh indication information is used to indicate whether the terminal supports position calculation;

[0032] Eighth indication information, the eighth indication information is used to indicate whether the terminal supports selection of a positioning method;

[0033] Ninth indication information, where the ninth indication information is used to indicate whether the terminal supports selection of an anchor terminal and / or a serving terminal;

[0034] Tenth indication information, the tenth indication information is used to indicate whether the terminal supports distribution of positioning assistance information;

[0035] eleventh indication information, the eleventh indication information being used to indicate whether the terminal supports a location request at a scheduled time;

[0036] Twelfth indication information, where the twelfth indication information is used to indicate whether the terminal supports performing the SL positioning measurement under partial coverage;

[0037] Thirteenth indication information, the thirteenth indication information is used to indicate whether the terminal supports establishing a communication connection with the first network element and / or the second network element through the anchor terminal.

[0038] In the above embodiment, the terminal is able to report various layer 2 capabilities, so that matching SL positioning measurements can be configured more comprehensively based on the terminal's capabilities, which can effectively improve the communication efficiency of the system, improve the accuracy of side link positioning measurements, and improve positioning efficiency.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal role includes at least one of the following:

[0040] Anchor terminal; target terminal; service terminal; positioning terminal.

[0041] In the above embodiment, the terminal can report the roles it supports, so that SL positioning measurements that match the capabilities of the terminal can be configured, which can effectively improve the communication efficiency of the system, improve the accuracy of side link positioning measurements, and improve positioning efficiency.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the second indication information is used to indicate the role of the terminal support service terminal, and the first information includes any one or more of the following information:

[0043] seventh indication information, where the seventh indication information is used to indicate that the terminal supports position calculation;

[0044] Eighth indication information, where the eighth indication information is used to indicate that the terminal supports selection of a positioning method;

[0045] Ninth indication information, where the ninth indication information is used to indicate that the terminal supports selection of an anchor terminal and / or a serving terminal;

[0046] The tenth indication information is used to indicate that the terminal supports the distribution of positioning assistance information.

[0047] In the above embodiment, some parameters in the capability information can be associated with the roles supported by the terminal, thus saving signaling resources.

[0048] In combination with some embodiments of the first aspect, in some embodiments, when the first information includes the seventh indication information, the first information is also used to indicate the eighth indication information and the ninth indication information.

[0049] In the above embodiment, some parameters in capability information can be associated to save signaling resources.

[0050] In combination with some embodiments of the first aspect, in some embodiments, when the first information includes the seventh indication information, the first information is also used to indicate the eighth indication information.

[0051] In the above embodiment, some parameters in capability information can be associated to save signaling resources.

[0052] In combination with some embodiments of the first aspect, in some embodiments, when the first information includes the eighth indication information, the first information is also used to indicate the ninth indication information.

[0053] In the above embodiment, some parameters in capability information can be associated to save signaling resources.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the third indication information corresponds to the positioning mode, and the third indication information is used to indicate whether the terminal supports periodic reporting of the positioning measurement results in each positioning mode.

[0055] In the above embodiment, the capability parameters of the terminal can be reported separately based on the positioning mode, so that the matching SL positioning measurement can be configured more accurately based on the terminal's capability, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the sixth indication information corresponds to the positioning mode, and the sixth indication information is used to indicate whether the terminal supports a positioning response time of the first time length in each positioning mode.

[0057] In the above embodiment, the capability parameters of the terminal can be reported separately based on the positioning mode, so that the matching SL positioning measurement can be configured more accurately based on the terminal's capability, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency.

[0058] In combination with some embodiments of the first aspect, in some embodiments, the eleventh indication information corresponds to the time type of the reserved time, and the eleventh indication information is used to indicate whether the terminal supports positioning requests for the reserved time of each time type.

[0059] In the above embodiment, the types of reservation time that can be supported respectively report whether the reservation time is supported, so that the matching SL positioning measurement can be configured more accurately based on the capabilities of the terminal, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the time type of the scheduled time includes at least one of the following:

[0061] Coordinated Universal Time UTC;

[0062] Global Navigation Satellite System GNSS time;

[0063] Time domain resource unit of the new radio interface NR;

[0064] The time is relative to a time reference point.

[0065] In the above embodiment, the above multiple time types are taken into consideration, so that the capability information of the terminal can be reported more comprehensively.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the eleventh indication information corresponds to the positioning mode, and the eleventh indication information is used to indicate whether the terminal supports positioning requests for the reserved time of each time type in each positioning mode.

[0067] In the above embodiment, the capability parameters of the terminal can be reported separately based on the positioning mode, so that the matching SL positioning measurement can be configured more accurately based on the terminal's capability, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the second indication information is used to indicate the role of the terminal supporting the service terminal, and the second indication information is further used to indicate any one or more of the following capability information of the terminal:

[0069] Whether the terminal supports location calculation;

[0070] Whether the terminal supports selection of positioning methods;

[0071] whether the terminal supports selection of an anchor terminal and / or a serving terminal;

[0072] Whether the terminal supports the distribution of positioning assistance information.

[0073] In the above embodiment, some parameters in the capability information can be associated with the roles supported by the terminal, thus saving signaling resources.

[0074] In conjunction with some embodiments of the first aspect, in some embodiments, the positioning mode includes at least one of the following:

[0075] Standalone mode;

[0076] Terminal-based positioning mode;

[0077] Terminal-assisted positioning mode.

[0078] In the above embodiment, the capability information of the terminal can be reported based on multiple existing positioning modes, thereby improving the universality of the solution.

[0079] In combination with some embodiments of the first aspect, in some embodiments, the second indication information is bitmap information.

[0080] In the above embodiment, indication can be performed based on a bitmap, which facilitates modification and improves the indication efficiency of the indication information.

[0081] In combination with some embodiments of the first aspect, in some embodiments, the first information corresponds to the positioning method, and the first information is used to indicate layer 2 capability information related to performing SL positioning measurements under each positioning method supported by the terminal.

[0082] In the above embodiment, the capability parameters of the terminal can be reported separately based on the positioning method, so that the matching SL positioning measurement can be configured more accurately based on the terminal's capability, which can effectively improve the communication efficiency of the system, improve the accuracy of the side link positioning measurement, and improve the positioning efficiency.

[0083] In conjunction with some embodiments of the first aspect, in some embodiments, the positioning method includes at least one of the following:

[0084] Sidelink time difference of arrival SL-TDOA;

[0085] Side link angle of arrival SL-AOA;

[0086] Side link departure angle SL-AOD;

[0087] Sidelink round-trip time SL-RTT.

[0088] In the above embodiment, the capability information of the terminal can be reported based on multiple existing positioning methods, thereby improving the universality of the solution.

[0089] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is sent to at least one of the following communication devices:

[0090] Network equipment;

[0091] Second network element;

[0092] At least one other terminal.

[0093] In the above embodiment, the terminal can send capability information to other communication devices participating in SL positioning measurement in various SL positioning scenarios, thereby improving the universality of the solution.

[0094] In a second aspect, an embodiment of the present disclosure proposes a terminal, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute the first aspect and the optional implementation method of the first aspect.

[0095] In a third aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the first aspect and the optional implementation method of the first aspect.

[0096] In a fourth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect and the optional implementation of the first aspect.

[0097] In a fifth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect and the optional implementation manner of the first aspect.

[0098] In a sixth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect and the optional implementation manner of the first aspect.

[0099] In a seventh aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the first aspect and the optional implementation of the first aspect.

[0100] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0101] The embodiments of the present disclosure provide a sidelink SL positioning method and apparatus, communication equipment, communication system, and storage medium. In some embodiments, the terms "sidelink SL positioning method" and "sidelink SL positioning method, communication method, etc. are interchangeable; the terms "sidelink SL positioning apparatus" and "sidelink SL positioning apparatus, communication apparatus, etc. are interchangeable; and the terms "sidelink SL positioning system, communication system, etc. are interchangeable.

[0102] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0103] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0104] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0105] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0106] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0107] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0108] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0109] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0110] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0111] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0112] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0113] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0114] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0115] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0116] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0117] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0118] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0119] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0120] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0121] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0122] As shown in FIG1A , a communication system 100 includes at least one terminal 101 .

[0123] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0124] In some embodiments, the communication system 100 may further include a network device 102, such as a node or device that accesses a terminal to a wireless network. The network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0125] In some embodiments, the communication system 100 may further include a core network device 103. The core network device 103 may be a single device including a first network element 1031, a second network element 1032, etc., or may be a plurality of devices or a device group including all or part of the first network element 1031, the second network element 1032, etc. The network element may be virtual or physical. The core network may include, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0126] In some embodiments, the first network element 1031 is, for example, an access and mobility management function (AMF).

[0127] In some embodiments, the first network element 1031 is used to manage the mobility of the terminal and can authorize and authenticate the access of the terminal, etc., and the name is not limited thereto.

[0128] In some embodiments, the second network element 1032 is, for example, a location management function (LMF).

[0129] In some embodiments, the second network element 1032 is used to manage resources and time of positioning activities, and can expose location services to AMF for immediate or delayed location information requests on the NL1 interface, etc., and the name is not limited to this.

[0130] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0131] In some embodiments, the network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0132] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0133] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0134] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0135] Positioning based on the Uu interface (the wireless interface between the terminal and the network device) is called Uu positioning. Positioning methods include Time Difference of Arrival (TDOA), Angle of Departure (AOD), Angle of Arrival (AOA), Multi-RTT (RTT, Round-Trip Time), Assisted Global Navigation Satellite System (A-GNSS), Wireless Local Area Network (WLAN) positioning, Bluetooth positioning, sensor positioning, carrier phase positioning, Enhanced Cell-ID (E-CID) positioning, etc.

[0136] Positioning based on the sidelink (SL) between terminals is called sidelink positioning, which includes sidelink absolute positioning, sidelink relative positioning, and ranging. Positioning methods include sidelink round-trip time (SL-RTT (Round-Trip Time)), sidelink time difference of arrival (SL-TDOA), sidelink angle of arrival (SL-AOA), sidelink angle of departure (SL-AOD), SL carrier phase, etc. Absolute positioning is to determine the absolute coordinates of the terminal, relative positioning is to determine the coordinates of the terminal relative to a reference point, and ranging is to determine the distance and / or angle of the terminal relative to a reference point.

[0137] Ranging usually only involves ranging between two terminals, but absolute positioning and relative positioning may involve multiple terminals to participate in positioning.

[0138] SL positioning methods include SL-RTT, SL-TDOA, and SL-AOA. Furthermore, SL positioning can be combined with Uu positioning to improve positioning accuracy. To obtain the absolute position of a terminal, Uu positioning can be used to obtain the absolute position of a reference terminal. SL relative positioning can then be used to obtain the relative position of the target terminal and the reference terminal. The absolute position of the target terminal can then be calculated using the absolute position of the reference terminal and the relative positions of the two.

[0139] Taking the SL-TDOA-based positioning method shown in Figure 1B as an example, the terminal can determine the specific position of the terminal relative to multiple road side units (RSUs) (where the number of RSUs is greater than or equal to 3) by measuring the positioning signals sent by the RSUs through the sidelink.

[0140] If the positioning result is not converted into absolute coordinates based on the RSU's absolute position information (such as Global Positioning System (GPS) information), the positioning result is relative positioning. Otherwise, it is absolute positioning. The terminal being positioned is called the target terminal, and other terminals that support positioning the target terminal are called anchor terminals.

[0141] If positioning involves only two terminals, they are each other's anchor terminals.

[0142] In some embodiments, there are different types of anchor terminals. For example, an RSU-type anchor terminal is an infrastructure that can provide positioning services by collaborating with other RSUs. For example, an ordinary terminal can also serve as an anchor terminal, but it is difficult for it to assist other terminals in providing positioning services. In addition, some anchor terminals have location information such as GPS information, which can assist other terminals in absolute positioning. Other anchor terminals may not have location information such as GPS information.

[0143] In some embodiments, a server terminal refers to any terminal that has one or more of the functions of position calculation, anchor terminal selection, positioning method selection, and auxiliary information distribution.

[0144] The side link SL positioning method and device provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0145] FIG2 is an interactive diagram of a sidelink SL positioning method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a sidelink SL positioning method, the method comprising:

[0146] Step S2101: Terminal 101 sends first information.

[0147] In some embodiments, the network device receives the first information sent by the terminal 101 .

[0148] In some embodiments, the second network element receives the first information sent by the terminal 101 through the access network device.

[0149] Optionally, the second network element may be a location management function LMF.

[0150] In some embodiments, at least one other terminal receives the first information sent by terminal 101 .

[0151] In some embodiments, the first information is used to indicate layer 2 capability information of the terminal 101 related to performing SL positioning measurements.

[0152] In some embodiments, the name of the first information is not limited, and it can be, for example, "capability information", "capability indication information", "SL positioning information", "SL positioning-layer 2 capability information", etc.

[0153] In some embodiments, the first information includes any one or more of the following information:

[0154] First indication information, the first indication information is used to indicate the positioning mode supported by the terminal 101;

[0155] Second indication information, the second indication information is used to indicate the terminal roles supported by the terminal 101;

[0156] Third indication information, the third indication information is used to indicate whether the terminal 101 supports periodic reporting of positioning measurement results;

[0157] Fourth indication information, the fourth indication information is used to indicate whether the terminal 101 supports reporting of positioning measurement results based on event triggering;

[0158] Fifth indication information, the fifth indication information is used to indicate whether the terminal 101 supports reporting multiple positioning measurement results in one measurement report;

[0159] Sixth indication information, the sixth indication information is used to indicate whether the terminal 101 supports a positioning response time of the first time length;

[0160] Seventh indication information, the seventh indication information is used to indicate whether the terminal 101 supports position calculation;

[0161] Eighth indication information, the eighth indication information is used to indicate whether the terminal 101 supports selection of a positioning method;

[0162] Ninth indication information, the ninth indication information is used to indicate whether the terminal 101 supports selection of an anchor terminal and / or a serving terminal;

[0163] Tenth indication information, the tenth indication information is used to indicate whether the terminal 101 supports the distribution of positioning assistance information;

[0164] Eleventh indication information, the eleventh indication information is used to indicate whether the terminal 101 supports the positioning request at the scheduled time;

[0165] Twelfth indication information, the twelfth indication information is used to indicate whether the terminal 101 supports performing SL positioning measurement under partial coverage;

[0166] Thirteenth indication information: The thirteenth indication information is used to indicate whether the terminal 101 supports establishing a communication connection with the first network element and / or the second network element through the anchor terminal.

[0167] In some embodiments, the first indication information is used to indicate a positioning mode supported by the terminal 101 .

[0168] Optionally, the positioning mode includes at least one of the following: a standalone mode; a terminal-based positioning mode (UE-based); and a terminal-assisted positioning mode (UE-assisted).

[0169] Among them, the terminal-based positioning mode refers to positioning in which position calculation is performed at the terminal; the terminal-assisted positioning mode (also known as the network device-based positioning mode) refers to positioning in which position calculation is performed at the network side.

[0170] In some embodiments, the name of the first indication information is not limited, and it may be, for example, "Positioning Modes" or the like.

[0171] Optionally, the first indication information may indicate the supported positioning modes in the form of a bitmap. As an example, the first indication information includes 3 bits, wherein the first bit is used to indicate whether the terminal 101 supports the independent mode, the second bit is used to indicate whether the terminal 101 supports the terminal-based positioning mode, and the third bit is used to indicate whether the terminal 101 supports the terminal-assisted positioning mode. Optionally, a bit value of 0 indicates that the corresponding positioning mode is not supported, and a bit value of 1 indicates that the corresponding positioning mode is supported; alternatively, a bit value of 1 indicates that the corresponding positioning mode is not supported, and a bit value of 0 indicates that the corresponding positioning mode is supported.

[0172] In some embodiments, the second indication information is used to indicate the terminal roles supported by the terminal 101 .

[0173] Optionally, the terminal role includes at least one of the following: an anchor terminal; a target terminal; a server terminal; and a located terminal.

[0174] In some embodiments, the name of the second indication information is not limited, and it may be, for example, "terminal role" or the like.

[0175] Optionally, the second indication information may indicate the supported roles in the form of a bitmap. As an example, the second indication information includes 4 bits, wherein the first bit is used to indicate whether the terminal 101 supports being an anchor terminal, the second bit is used to indicate whether the terminal 101 supports being a target terminal, the third bit is used to indicate whether the terminal 101 supports being a server terminal, and the fourth bit is used to indicate whether the terminal 101 supports being a located terminal. Optionally, a bit value of 0 indicates that the corresponding terminal role is not supported, and a bit value of 1 indicates that the corresponding terminal role is supported; alternatively, a bit value of 1 indicates that the corresponding terminal role is not supported, and a bit value of 0 indicates that the corresponding terminal role is supported.

[0176] In some embodiments, the third indication information is used to indicate whether the terminal 101 supports periodic reporting of positioning measurement results.

[0177] In some embodiments, the name of the third indication information is not limited, and it may be, for example, "periodical reporting" or the like.

[0178] In some embodiments, the third indication information indicates that the terminal 101 supports periodic reporting of positioning measurement results, and the third indication information is also used to indicate the period.

[0179] In some embodiments, the fourth indication information is used to indicate whether the terminal 101 supports reporting of positioning measurement results based on event triggering.

[0180] In some embodiments, the fifth indication information is used to indicate whether the terminal 101 supports reporting multiple positioning measurement results in one measurement report.

[0181] In some embodiments, the name of the fifth indication information is not limited, and it can be, for example, "multiple measurement results in the same measurement report (multiMeasInSameMeasReport)".

[0182] In some embodiments, the sixth indication information is used to indicate whether the terminal 101 supports a positioning response time of the first time length.

[0183] The sixth indication information is used to indicate whether the terminal 101 limits the time interval between the feedback positioning request and the positioning response to be within the first time length.

[0184] Optionally, the first time length may be 10 milliseconds, or other time lengths, or time lengths based on other time units, etc., which are not limited here.

[0185] In some embodiments, the name of the sixth indication information is not limited, and it is, for example, "response time (x-ResponseTime)", where the value of x is the first time length.

[0186] In some embodiments, the seventh indication information is used to indicate whether the terminal 101 supports position calculation.

[0187] In some embodiments, the name of the seventh indication information is not limited, and it can be, for example, "new air interface position calculation assistance support (nr-PosCalcAssistanceSupport)".

[0188] In some embodiments, the eighth indication information is used to indicate whether the terminal 101 supports the selection of the positioning method.

[0189] In some embodiments, the ninth indication information is used to indicate whether the terminal 101 supports selection of an anchor terminal and / or a serving terminal.

[0190] In some embodiments, the ninth indication information is used to indicate whether the terminal 101 supports selection of an anchor terminal, that is, whether the terminal 101 can select at least one terminal as an anchor terminal.

[0191] In some embodiments, the ninth indication information is used to indicate whether the terminal 101 supports selection of a service terminal, that is, whether the terminal 101 can select at least one terminal as a service terminal.

[0192] In some embodiments, the ninth indication information is used to indicate whether the terminal 101 supports selection of an anchor terminal and a serving terminal, that is, whether the terminal 101 can select at least one terminal as an anchor terminal and select at least one terminal as a serving terminal.

[0193] In some embodiments, the tenth indication information is used to indicate whether the terminal 101 supports the distribution of positioning assistance information.

[0194] In some embodiments, the eleventh indication information is used to indicate whether the terminal 101 supports positioning requests at a scheduled time.

[0195] The fact that the terminal supports the positioning request at the scheduled time means that the terminal can support sending the positioning request at the scheduled time.

[0196] In some embodiments, the name of the eleventh indication information is not limited, and it can be, for example, "scheduled Location Request Supported".

[0197] In some embodiments, the eleventh indication information corresponds to a time type of the scheduled time, and the eleventh indication information is used to indicate whether the terminal supports positioning requests for the scheduled time of each time type.

[0198] Optionally, the time type of the above-mentioned scheduled time includes at least one of the following:

[0199] Universal Time Coordinated (UTC);

[0200] Global Navigation Satellite System (GNSS) time;

[0201] New Radio (NR) time domain resource unit;

[0202] The time is relative to a time reference point.

[0203] Optionally, the time reference point may be configured by the network, or may be specified by a protocol, etc.

[0204] Furthermore, in some embodiments, there is a correspondence between the eleventh indication information and the positioning mode, and the eleventh indication information is used to indicate whether the terminal supports positioning requests for the reserved time of each time type in each positioning mode.

[0205] In some embodiments, the twelfth indication information is used to indicate whether the terminal 101 supports performing SL positioning measurements under partial coverage.

[0206] Partial coverage means that one of the two terminals on the SL is under network coverage and the other is out of network coverage.

[0207] In some embodiments, the thirteenth indication information is used to indicate whether the terminal 101 supports establishing a communication connection with the first network element and / or the second network element through the anchor terminal.

[0208] In some embodiments, the first network element is, for example, an access and mobility management function AMF.

[0209] In some embodiments, the second network element is, for example, a location management function LMF.

[0210] It can be understood that the communication connection established between the terminal 101 and the first network element and / or the second network element through the anchor terminal involves transparent transmission of the access network device.

[0211] In some embodiments, the communication connection established between the terminal 101 and the first network element through the anchor terminal is a non-access-stratum (NAS) connection.

[0212] In some embodiments, the first information sent by the terminal 101 to at least one other terminal may be included in a Sidelink Positioning Protocol (SLPP) message.

[0213] In some embodiments, the first information sent by the terminal 101 to the second network element may be included in an SLPP message.

[0214] In some embodiments, the first information sent by the terminal 101 to the network device may be included in a (Radio Resource Control, RRC) message.

[0215] In some embodiments, there is a correspondence between the first information and the positioning method, and the first information is used to indicate the layer 2 capability information related to performing SL positioning measurements under each positioning method supported by the terminal 101.

[0216] Optionally, the positioning method includes at least one of the following:

[0217] Sidelink time difference of arrival SL-TDOA;

[0218] Side link angle of arrival SL-AOA;

[0219] Side link departure angle SL-AOD;

[0220] Sidelink round-trip time SL-RTT.

[0221] In some embodiments, the second indication information is used to indicate that the terminal supports the role of the server terminal, and the first information includes any one or more of the following information:

[0222] Seventh indication information, the seventh indication information is used to indicate that the terminal 101 supports position calculation;

[0223] Eighth indication information, the eighth indication information is used to indicate that the terminal 101 supports selection of a positioning method;

[0224] Ninth indication information, the ninth indication information is used to indicate that the terminal 101 supports selection of an anchor terminal and / or a serving terminal;

[0225] The tenth indication information is used to indicate that the terminal 101 supports the distribution of positioning assistance information.

[0226] In some embodiments, when the first information includes the seventh indication information, the first information is further used to indicate the eighth indication information and the ninth indication information.

[0227] Optionally, when the first information includes the seventh indication information, the first information may directly include the eighth indication information and the ninth indication information; or the first information may not directly include the eighth indication information and the ninth indication information, but the first information implicitly indicates that the terminal 101 has the capabilities indicated by the eighth indication information and the ninth indication information, that is, supports the selection of the positioning method and supports the selection of the anchor terminal and / or the service terminal.

[0228] In some embodiments, when the first information indicates that the terminal 101 supports position calculation, the first information is further used to indicate that the terminal 101 supports selection of a positioning method, and is used to indicate that the terminal 101 supports selection of an anchor terminal and / or a serving terminal.

[0229] Optionally, the first information may directly indicate that the terminal 101 has the above-mentioned capability by including the seventh indication information, the eighth indication information and the ninth indication information, or may implicitly indicate that the terminal 101 has the above-mentioned capability by only including the seventh indication information.

[0230] In some embodiments, when the first information includes the seventh indication information, the first information is also used to indicate the eighth indication information.

[0231] Optionally, when the first information includes the seventh indication information, the first information may directly include the eighth indication information; or the first information may not directly include the eighth indication information, but the first information implicitly indicates that the terminal 101 has the capability indicated by the eighth indication information.

[0232] In some embodiments, when the first information indicates that the terminal 101 supports position calculation, the first information is also used to indicate that the terminal supports selection of a positioning method.

[0233] Optionally, the first information may directly indicate that the terminal 101 has the above-mentioned capability by including the seventh indication information and the eighth indication information, or may implicitly indicate that the terminal 101 has the above-mentioned capability by only including the seventh indication information.

[0234] In some embodiments, when the first information includes the eighth indication information, the first information is also used to indicate the ninth indication information.

[0235] Optionally, when the first information includes the eighth indication information, the first information may directly include the ninth indication information; or the first information may not directly include the ninth indication information, but the first information implicitly indicates that the terminal 101 has the capability indicated by the ninth indication information.

[0236] In some embodiments, when the first information indicates that the terminal 101 supports selection of a positioning method, the first information is further used to indicate that the terminal 101 supports selection of an anchor terminal and / or a serving terminal.

[0237] Optionally, the first information may directly indicate that the terminal 101 has the above-mentioned capability by including the eighth indication information and the ninth indication information, or may implicitly indicate that the terminal 101 has the above-mentioned capability by only including the eighth indication information.

[0238] In some embodiments, there is a correspondence between the third indication information and the positioning mode, and the third indication information is used to indicate whether the terminal supports periodic reporting of positioning measurement results in each positioning mode.

[0239] In some embodiments, there is a correspondence between the sixth indication information and the positioning mode, and the sixth indication information is used to indicate whether the terminal supports a positioning response time of the first time length in each positioning mode.

[0240] In some embodiments, the second indication information is used to indicate the role of the terminal supporting the service terminal. The second indication information is further used to indicate any one or more of the following capability information of the terminal:

[0241] Whether the terminal supports location calculation;

[0242] Whether the terminal supports the selection of positioning methods;

[0243] Whether the terminal supports selection of anchor terminal and / or serving terminal;

[0244] Whether the terminal supports the distribution of positioning assistance information.

[0245] Optionally, the second indication information may indicate any one or more of the above capability information of the terminal in a bitmap manner.

[0246] Step S2102, terminal 101 performs SL positioning measurement.

[0247] In some embodiments, terminal 101 may perform SL positioning measurements.

[0248] In some embodiments, the SL positioning measurement is configured based on the first information.

[0249] In some embodiments, the SL positioning measurements are matched to the capabilities of terminal 101.

[0250] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0251] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0252] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" may be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" may be used interchangeably.

[0253] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0254] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0255] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0256] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0257] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0258] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0259] The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2102. For example, step 2101 may be implemented as an independent embodiment, and steps 2101+2102 may be implemented as independent embodiments, etc., but the present invention is not limited thereto.

[0260] In some embodiments, step 2102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0261] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0262] FIG3A is a flow chart of a sidelink SL positioning method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a sidelink SL positioning method, which is executed by terminal 101 and includes:

[0263] Step S3101, sending the first information.

[0264] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0265] In some embodiments, the network device receives the first information sent by the terminal 101 .

[0266] In some embodiments, the second network element receives the first information sent by the terminal 101 through the access network device.

[0267] Optionally, the second network element may be a location management function LMF.

[0268] In some embodiments, at least one other terminal receives the first information sent by terminal 101 .

[0269] Step S3102, perform SL positioning measurement.

[0270] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0271] The communication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3102. For example, step 3101 may be implemented as an independent embodiment, and steps 3101+3102 may be implemented as independent embodiments, etc., but the present invention is not limited thereto.

[0272] In some embodiments, step 3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0273] FIG3B is a flow chart of a sidelink SL positioning method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a sidelink SL positioning method, which is executed by terminal 101 and includes:

[0274] Step S3201, sending the first information.

[0275] Optional implementations of step S3201 can be found in step S2101 of FIG. 2 , optional implementations of step S3101 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0276] Optionally, the first information is used by the terminal 101 to perform SL positioning measurement. Optional implementations thereof may refer to step S2102 of FIG. 2 , the optional implementations of step S3102 of FIG. 3A , and other related parts of the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0277] The following is an exemplary introduction to the methods described in the above embodiments.

[0278] In an embodiment of the present disclosure, UE A can send one or more of the following SL positioning capability information to other communication devices (wherein the communication device includes at least one of a base station, a LMF, and one or more other UEs):

[0279] Positioning Modes: such as Standalone, UE-based, and UE-assisted;

[0280] Whether periodic reporting is supported (periodicalReporting);

[0281] Whether event-triggered reporting is supported;

[0282] Whether x-ms-unit-ResponseTime positioning response time (x-ms-unit-ResponseTime) is supported (where x is a numeric value);

[0283] Supported UE roles: anchor UE, target UE, server UE, located UE;

[0284] Whether position calculation is supported (nr-PosCalcAssistanceSupport);

[0285] Whether positioning method selection is supported;

[0286] Whether anchor UE / server UE selection is supported;

[0287] Whether to support the distribution of positioning auxiliary information;

[0288] Whether scheduled location requests are supported (scheduledLocationRequestSupported);

[0289] Whether to support reporting multiple measurement results in one measurement report (multiMeasInSameMeasReport);

[0290] Whether partial coverage is supported;

[0291] Whether to support the establishment of NAS connection with AMF through anchor UE or whether to support communication with LMF through anchor UE.

[0292] Optionally, the capability information sent by the terminal to the UE or LMF uses an SLPP message, and the capability information sent to the base station uses an RRC message.

[0293] In some embodiments, the supported UE roles are indicated in a bitmap manner.

[0294] Optionally, each bit in the bitmap corresponds to each UE role, and a value of 1 or 0 represents that the UE supports the role.

[0295] In some embodiments, the capability information is indicated separately by location method.

[0296] Optionally, the positioning method includes SL-TDOA, SL-AOA, SL-AOD, SL-RTT, etc.

[0297] In some embodiments, if the UE indicates support for the server UE role, the UE supports one or more or all of the following: position calculation, positioning assistance information distribution, positioning method selection, and anchor UE / server UE selection.

[0298] In some embodiments, if the UE indicates support for position calculation, the UE supports positioning method selection, and anchor UE / server UE selection.

[0299] In some embodiments, if the UE indicates support for position calculation, the UE supports positioning method selection.

[0300] In some embodiments, if the UE indicates support for positioning method selection, the UE supports anchor UE / server UE selection.

[0301] In some embodiments, whether periodic reporting is supported may be indicated based on the positioning mode.

[0302] In some embodiments, whether x millisecond positioning response time is supported can be indicated by positioning mode.

[0303] In some embodiments, whether a positioning request for pre-booked positioning time is supported may be indicated by time type (such as UTC time, GNSS time, NR time, or relative time).

[0304] Optionally, for each time type, the positioning mode can be further divided to indicate whether it is supported.

[0305] In some embodiments, if the UE indicates support for the server UE role, the UE further indicates which of the following server UE functions are supported: position calculation, anchor UE selection, positioning method selection, and auxiliary information distribution.

[0306] Optionally, a bitmap may be used to indicate which of the above functions are specifically supported.

[0307] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0308] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0309] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0310] Figure 4 is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure. As shown in Figure 4, terminal 4100 may include at least one of a transceiver module 4101 and a processing module 4102. In some embodiments, the transceiver module is configured to transmit first information indicating Layer 2 capability information of the terminal related to performing sidelink (SL) positioning measurements. In some embodiments, the processing module is configured to perform SL positioning measurements based on the first information.

[0311] Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step S2101, but not limited thereto), which are not described in detail here. Optionally, the processing module is used to perform at least one of the other steps (for example, step S2102, but not limited thereto) performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0312] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0313] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0314] Figure 5A is a schematic diagram of the structure of a communication device 5100 proposed in an embodiment of the present disclosure. Communication device 5100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 5100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0315] As shown in Figure 5A, the communication device 5100 includes one or more processors 5101. The processor 5101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 5100 is used to perform any of the above methods.

[0316] In some embodiments, the communication device 5100 further includes one or more memories 5102 for storing instructions. Optionally, all or part of the memories 5102 may be located outside the communication device 5100.

[0317] In some embodiments, the communication device 5100 further includes one or more transceivers 5103. When the communication device 5100 includes one or more transceivers 5103, the transceiver 5103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101 and step S2102, but not limited thereto), and the processor 5101 performs at least one of the other steps (for example, step S2103, but not limited thereto).

[0318] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0319] In some embodiments, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5102. The interface circuit 5104 may be configured to receive signals from the memory 5102 or other devices, and may be configured to send signals to the memory 5102 or other devices. For example, the interface circuit 5104 may read instructions stored in the memory 5102 and send the instructions to the processor 5101.

[0320] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in the present disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0321] 5B is a schematic diagram of the structure of a chip 5200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 5200 shown in FIG5B , but the present disclosure is not limited thereto.

[0322] The chip 5200 includes one or more processors 5201 , and the chip 5200 is configured to execute any of the above methods.

[0323] In some embodiments, the chip 5200 further includes one or more interface circuits 5202. Optionally, the interface circuit 5202 is connected to the memory 5203. The interface circuit 5202 can be used to receive signals from the memory 5203 or other devices, and can be used to send signals to the memory 5203 or other devices. For example, the interface circuit 5202 can read instructions stored in the memory 5203 and send the instructions to the processor 5201.

[0324] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2102, but not limited to this), and the processor 5201 performs at least one of the other steps (for example, step S2103, but not limited to this).

[0325] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0326] In some embodiments, the chip 5200 further includes one or more memories 5203 for storing instructions. Alternatively, all or part of the memories 5203 may be located outside the chip 5200.

[0327] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0328] The present disclosure also provides a program product, which, when executed by the communication device 5100, enables the communication device 5100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0329] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0330] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0331] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0332] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0333] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A sidelink SL positioning method, characterized in that: The method is executed by a terminal, and includes: First information is sent, where the first information is used to indicate layer 2 capability information of the terminal related to performing sidelink SL positioning measurement.

2. The method according to claim 1, characterized in that The first information includes any one or more of the following information: first indication information, where the first indication information is used to indicate a positioning mode supported by the terminal; second indication information, where the second indication information is used to indicate a terminal role supported by the terminal; third indication information, where the third indication information is used to indicate whether the terminal supports periodic reporting of the positioning measurement result; Fourth indication information, where the fourth indication information is used to indicate whether the terminal supports reporting of the positioning measurement result based on event triggering; fifth indication information, where the fifth indication information is used to indicate whether the terminal supports reporting a plurality of positioning measurement results in one measurement report; Sixth indication information, the sixth indication information is used to indicate whether the terminal supports a positioning response time of a first time length; seventh indication information, the seventh indication information being used to indicate whether the terminal supports position calculation; Eighth indication information, where the eighth indication information is used to indicate whether the terminal supports selection of a positioning method; Ninth indication information, where the ninth indication information is used to indicate whether the terminal supports selection of an anchor terminal and / or a serving terminal; Tenth indication information, the tenth indication information is used to indicate whether the terminal supports distribution of positioning assistance information; eleventh indication information, the eleventh indication information is used to indicate whether the terminal supports a location request at a scheduled time; Twelfth indication information, the twelfth indication information is used to indicate whether the terminal supports performing the SL positioning measurement under partial coverage; Thirteenth indication information, the thirteenth indication information is used to indicate whether the terminal supports establishing a communication connection with the first network element and / or the second network element through the anchor terminal.

3. The method according to claim 2, characterized in that The terminal role includes at least one of the following: Anchor terminal; target terminal; service terminal; positioning terminal.

4. The method according to claim 2 or 3, characterized in that: The second indication information is used to indicate the role of the terminal support service terminal, and the first information includes any one or more of the following information: Seventh indication information, the seventh indication information is used to indicate that the terminal supports position calculation; Eighth indication information, where the eighth indication information is used to indicate that the terminal supports selection of a positioning method; Ninth indication information, where the ninth indication information is used to indicate that the terminal supports selection of an anchor terminal and / or a serving terminal; The tenth indication information is used to indicate that the terminal supports the distribution of positioning assistance information.

5. The method according to any one of claims 2 to 4, characterized in that: In the case where the first information includes the seventh indication information, the first information is also used to indicate the eighth indication information and Ninth instruction information.

6. The method according to any one of claims 2 to 4, characterized in that: In a case where the first information includes the seventh indication information, the first information is further used to indicate the eighth indication information.

7. The method according to any one of claims 2 to 6, characterized in that: In a case where the first information includes the eighth indication information, the first information is further used to indicate the ninth indication information.

8. The method according to claims 2-7, characterized in that: The third indication information corresponds to the positioning mode, and the third indication information is used to indicate whether the terminal supports periodic reporting of the positioning measurement result in each positioning mode.

9. The method according to claims 2-8, characterized in that: There is a corresponding relationship between the sixth indication information and the positioning mode, and the sixth indication information is used to indicate whether the terminal supports a positioning response time of a first time length in each positioning mode.

10. The method according to claims 2-9, characterized in that: The eleventh indication information corresponds to a time type of the scheduled time, and the eleventh indication information is used to indicate whether the terminal supports a positioning request for a scheduled time of each time type.

11. The method according to claim 10, characterized in that The time type of the scheduled time includes at least one of the following: Coordinated Universal Time UTC; Global Navigation Satellite System GNSS time; Time domain resource unit of the new radio interface NR; The time is relative to a time reference point.

12. The method according to claim 10 or 11, characterized in that: The eleventh indication information corresponds to the positioning mode, and the eleventh indication information is used to indicate whether the terminal supports positioning requests for the reserved time of each time type in each positioning mode.

13. The method according to any one of claims 2 to 12, characterized in that: The second indication information is used to indicate the role of the terminal supporting the service terminal, and the second indication information is further used to indicate any one or more of the following capability information of the terminal: Whether the terminal supports location calculation; Whether the terminal supports selection of a positioning method; whether the terminal supports selection of an anchor terminal and / or a serving terminal; Whether the terminal supports the distribution of positioning assistance information.

14. The method according to any one of claims 2 to 13, characterized in that: The positioning mode includes at least one of the following: Standalone mode; Terminal-based positioning mode; Terminal-assisted positioning mode.

15. The method according to any one of claims 2 to 14, characterized in that: The second indication information is bitmap information.

16. The method according to any one of claims 1 to 15, characterized in that: There is a correspondence between the first information and the positioning method, and the first information is used to indicate the layer 2 capability information related to performing SL positioning measurements under each positioning method supported by the terminal.

17. The method according to claim 16, characterized in that The positioning method includes at least one of the following: Sidelink time difference of arrival SL-TDOA; Side link angle of arrival SL-AOA; Side link departure angle SL-AOD; Sidelink round trip time SL-RTT.

18. The method according to any one of claims 1 to 17, characterized in that: The first information is sent to at least one of the following communication devices: Network equipment; Second network element; at least one other terminal.

19. A terminal, characterized in that: The terminal comprises: The transceiver module is used to send first information, where the first information is used to indicate the layer 2 capability information of the terminal related to performing side link SL positioning measurement.

20. A terminal, characterized in that: The terminal comprises: one or more processors; The terminal is used to execute the side link SL positioning method described in any one of claims 1-18.

21. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the sidelink SL positioning method as described in any one of claims 1-18.

Images