WO2023006015A1 - Procédé de traitement de signal de référence de positionnement, terminal et dispositif côté réseau - Google Patents

Procédé de traitement de signal de référence de positionnement, terminal et dispositif côté réseau Download PDF

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Publication number
WO2023006015A1
WO2023006015A1 PCT/CN2022/108483 CN2022108483W WO2023006015A1 WO 2023006015 A1 WO2023006015 A1 WO 2023006015A1 CN 2022108483 W CN2022108483 W CN 2022108483W WO 2023006015 A1 WO2023006015 A1 WO 2023006015A1
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prs
candidate
reference signal
positioning reference
signal processing
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PCT/CN2022/108483
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English (en)
Chinese (zh)
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司晔
邬华明
李�根
王园园
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维沃移动通信有限公司
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Publication of WO2023006015A1 publication Critical patent/WO2023006015A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application belongs to the technical field of communications, and in particular relates to a positioning reference signal processing method, terminal and network side equipment.
  • the unlicensed frequency band can be used as a supplement to the licensed frequency band (licensed band) to help operators expand the service.
  • the unlicensed frequency band can work in the 5GHz, 37GHz and 60GHz frequency bands.
  • the large bandwidth (80 or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of the base station and user equipment (User Equipment, UE).
  • UE User Equipment
  • the unlicensed frequency band is shared by a variety of Radio Access Technology (RATs), such as Wireless Fidelity (Wireless Fidelity, WiFi), radar, Long Term Evolution Licensed Assisted Access (LTE-LAA ), etc.
  • RATs Radio Access Technology
  • LBT listen before talk
  • MCOT Maximum Channel Occupancy Time
  • ED energy detection
  • the transmission node may be a base station, UE, WiFi access point (Access Point, AP) and so on. After the transmission node starts transmission, the occupied channel time COT cannot exceed MCOT.
  • LBT types can be divided into category 1, category 2 and category4.
  • Category1 LBT means that the transmission node does not perform LBT, that is, no LBT or immediate transmission.
  • Category 2 LBT is a one-shot LBT, that is, the transmission node performs an LBT before transmission, and the transmission is performed when the channel is empty, and no transmission is performed when the channel 3 is busy.
  • Category 4 LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues to listen until it detects that the channel is empty.
  • category 2 LBT is applied to Discovery Reference Signal (DRS) without Physical Downlink Shared Channel (PDSCH), and category 4 LBT is applied to PDSCH/Downlink Control Information (DCI)/extension DCI (extended DCI, eDCI).
  • DCI Downlink Control Information
  • eDCI extended DCI
  • category4 LBT corresponds to type1 uplink channel access procedure
  • category2 LBT corresponds to type2 UL channel access procedure.
  • NR-U New Radio Unlicense, NR-U
  • a category2 LBT is newly added, corresponding to the gap of 16us.
  • the transmission of the Positioning Reference Signal (PRS) in the unlicensed frequency band is mainly affected by the LBT.
  • the base station can only send the PRS after the LBT is successful. Therefore, it is necessary to consider how to improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • PRS Positioning Reference Signal
  • Embodiments of the present application provide a positioning reference signal processing method, a terminal, and a network side device, which can solve the problem of how to improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • a positioning reference signal processing method comprising:
  • the first terminal acquires the candidate positions of the positioning reference signal PRS;
  • the first operation includes at least one of the following:
  • the PRS is measured and/or processed.
  • a positioning reference signal processing method comprising:
  • the second network device performs listen-before-talk LBT according to the candidate location information of the positioning reference signal PRS, or sends the PRS after the LBT succeeds.
  • a positioning reference signal processing method comprising:
  • the second terminal performs the listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or sends the PRS after the LBT is successful.
  • a positioning reference signal processing method comprising:
  • the first network device sends the candidate location information of the positioning reference signal PRS to other second network devices participating in positioning.
  • a positioning reference signal processing device comprising:
  • a first obtaining unit configured to obtain a candidate position of the positioning reference signal PRS
  • a first processing unit configured to perform a first operation according to the candidate position
  • the first operation includes at least one of the following:
  • the PRS is measured and/or processed.
  • a positioning reference signal processing device comprising:
  • the third processing unit is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • a positioning reference signal processing device includes:
  • the fifth processing unit is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • a positioning reference signal processing device includes:
  • the fourth sending unit is configured to send the candidate location information of the positioning reference signal PRS to other second network devices participating in positioning.
  • a terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor.
  • the program or instruction is executed by the processor. The steps of the positioning reference signal processing method described in the first aspect or the third aspect are realized.
  • a terminal including a processor and a communication interface, wherein the processor is configured to obtain a candidate position of a positioning reference signal PRS; perform a first operation according to the candidate position; wherein the first The operations include at least one of: detecting whether the PRS exists; measuring and/or processing the PRS. Or, the processor is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • a network-side device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or instruction is executed by the The steps for realizing the positioning reference signal processing method according to the second aspect or the fourth aspect are implemented when the processor is executed.
  • a network-side device including a processor and a communication interface, wherein the processor is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or, after the LBT is successful Send PRS.
  • the communication interface is used to send the candidate location information of the positioning reference signal PRS to other second network devices participating in positioning.
  • a readable storage medium where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the positioning reference signal processing method according to the first aspect is implemented Steps, or realize the steps of the positioning reference signal processing method as described in the second aspect, or realize the steps of the positioning reference signal processing method as described in the third aspect, or realize the positioning reference signal processing method as described in the fourth aspect A step of.
  • a chip in a fourteenth aspect, there is provided a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and implement the method described in the first aspect
  • the positioning reference signal processing method or implement the positioning reference signal processing method as described in the second aspect, or implement the positioning reference signal processing method as described in the third aspect, or implement the positioning reference signal processing method as described in the fourth aspect .
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the program/program product is executed by at least one processor to implement the method described in the first aspect
  • the steps of the positioning reference signal processing method, or implementing the steps of the positioning reference signal processing method as described in the second aspect, or implementing the steps of the positioning reference signal processing method as described in the third aspect, or implementing the steps of the positioning reference signal processing method as described in the fourth aspect The steps of the positioning reference signal processing method.
  • the terminal obtains the candidate position of the positioning reference signal PRS, and then detects whether the PRS exists according to the candidate position, and further measures and/or processes the PRS, by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band, improving The success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the transmission efficiency of the positioning reference signal in the unlicensed frequency band is improved.
  • FIG. 1 is a structural diagram of a wireless communication system applicable to an embodiment of the present application
  • FIG. 2 is one of the schematic flowcharts of the positioning reference signal processing method provided by the embodiment of the present application.
  • FIG. 3 is a schematic diagram of the PRS repetition provided by the embodiment of the present application.
  • FIG. 4 is the second schematic flow diagram of the positioning reference signal processing method provided by the embodiment of the present application.
  • FIG. 5 is the third schematic flow diagram of the positioning reference signal processing method provided by the embodiment of the present application.
  • Fig. 6 is the fourth schematic flow diagram of the positioning reference signal processing method provided by the embodiment of the present application.
  • FIG. 7 is one of the schematic structural diagrams of a positioning reference signal processing device provided in an embodiment of the present application.
  • Fig. 8 is the second structural schematic diagram of the positioning reference signal processing device provided by the embodiment of the present application.
  • FIG. 9 is the third structural schematic diagram of the positioning reference signal processing device provided by the embodiment of the present application.
  • Fig. 10 is the fourth schematic diagram of the structure of the positioning reference signal processing device provided by the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • FIG. 13 is one of the structural schematic diagrams of the network side equipment provided by the embodiment of the present application.
  • FIG. 14 is a second schematic structural diagram of a network-side device provided by an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technologies can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies.
  • NR New Radio
  • the following description describes the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.
  • 6G 6th Generation
  • FIG. 1 shows a structural diagram of a wireless communication system to which this embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 , an access network device 12 and a core network device 13 .
  • the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), Pedestrian Terminal (PUE) and other terminal-side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart feet) bracelets, smart anklets, etc.), smart wristbands, smart clothing, game consoles
  • the access network device 12 may also be called a wireless access network device or a radio access network (Radio Access Network, RAN), and the access network device 12 may be a base station, and the base station may be called a node B, an evolved node B, an access network Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (Extended Service Set, ESS), B Node, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node, Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved , the base station is not limited to specific technical terms.
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • B Node Evolved Node B
  • eNB Evolved Node B
  • WLAN access point WiFi node
  • WiFi node Transmitting Receiving Point
  • TRP
  • the core network device 13 may also be called a core network (Core Network, CN) or a 5G core (5G core, 5GC) network, and the core network device 13 may include but not limited to at least one of the following: a core network node, a core network function, a mobile Management entity (Mobility Management Entity, MME), access management function (Access Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Application Function (Application Function, AF), location server, etc. .
  • MME mobile Management entity
  • MME mobile Management Entity Management Entity
  • AMF Access Management Function
  • SMF Session Management Function
  • PCF Policy Control Function
  • PCF Policy and Charging Rules Function
  • PCF Policy and Charging Rules Function
  • EASDF Edge Application Server Discovery Function
  • Application Function Application Function
  • the transmission of the Positioning Reference Signal (PRS) in the unlicensed frequency band is mainly affected by the LBT.
  • the gNB can only send the PRS after the LBT is successful. Therefore, in order to increase the probability of successful PRS transmission during positioning, it may be necessary to introduce the concept of PRS candidate positions. That is, if PRS is sent at multiple candidate locations, even if some candidate locations cannot send PRS due to LBT failure, the remaining candidate locations will have the opportunity to send PRS.
  • the transmission of PRS is in the unlicensed frequency band, while the control of PRS can be in the licensed frequency band. Therefore, it may also be considered to indicate the PRS transmission in the unlicensed frequency band in the licensed frequency band, so as to further improve the flexibility and integrity of the system.
  • Fig. 2 is one of the flow diagrams of the positioning reference signal processing method provided by the embodiment of the present application. As shown in Fig. 2, the method includes the following steps:
  • Step 200 the first terminal acquires the candidate positions of the positioning reference signal PRS
  • Step 201 perform a first operation according to the candidate position
  • the first operation includes at least one of the following:
  • the PRS is measured and/or processed.
  • the positioning reference signal PRS is not limited to the PRS of Uu and the PRS of sidelink.
  • the positioning reference signal PRS is a reference signal for positioning, where the PRS can also be replaced with other reference signals for positioning, including but not limited to Channel State Information-Reference Signal (CSI- RS), synchronization signal block (Synchronization Signal and PBCH Block, SSB), tracking reference signal (Tracking Reference Signal, TRS), demodulation reference signal (Demodulation reference signal, DMRS) at least one.
  • CSI- RS Channel State Information-Reference Signal
  • SSB Synchron Generation Signal
  • TRS Track Reference Signal
  • DMRS demodulation reference signal
  • NR redesigned the downlink positioning reference signal NR DL PRS based on NR system.
  • PRS supports a maximum of 100M in frequency range 1 (Frequency range 1, FR1) and a maximum of 400M in frequency range 2 (Frequency range 2, FR2).
  • NR PRS bandwidth configuration has nothing to do with partial bandwidth (Bandwidth Part, BWP) configuration.
  • BWP Bandwidth Part
  • PRS supports beamforming, so the concept of PRS resource is introduced.
  • the PRS resource ID can correspond to 1 beam in 1 TRP.
  • One or more PRS resources can form a PRS resource set, or a PRS resource set can contain one or more PRS resources.
  • a TRP can contain one or more PRS resources.
  • PRS beam scanning and PRS beam repetition are supported.
  • the PRS is supported to refer to neighboring cell reference signals (Reference Signal, RS) as spatial quasi-collocation (QCL) reference signals.
  • RS neighboring cell reference signals
  • QCL spatial quasi-collocation
  • PRS supports interleaved pattern and supports flexible pattern configuration.
  • the comb structure of PRS resource can support ⁇ 2,4,6,12 ⁇ ; the number of symbols can support at least ⁇ 2,4,6,12 ⁇ .
  • the currently supported combinations of symbol numbers and comb sizes are shown in Table 1.
  • Candidate positions may also be referred to as candidate windows, including time domain and/or frequency domain candidate positions.
  • the first terminal detects whether the PRS exists, and further measures and/or processes the PRS, so as to improve the chance of successful positioning reference signal transmission in the unlicensed frequency band.
  • the candidate position represents the transmission opportunity of the PRS.
  • Candidate locations represent possible transmission locations of the PRS.
  • Each candidate position represents a (time continuous) positioning reference signal transmission opportunity, and there may be a positioning reference signal transmission.
  • the candidate location information is configured by the network device, pre-configured by the network device, configured by the second terminal, or predefined by a protocol.
  • the network device may be a first network device (location server), or a second network device (base station).
  • the second terminal is another UE in the sidelink, or an RSU, or a control node in the sidelink.
  • detecting whether the PRS exists refers to detecting the PRS at the candidate position.
  • the first terminal measures and/or processes the PRS.
  • to process the PRS is to cache the PRS first, and then perform time domain or frequency domain calculation. Alternatively, cache and process at the same time, or process directly.
  • the features of the candidate positions include at least one of the following:
  • the number of candidate positions, where the number of candidate positions can be one or more;
  • Candidate positions are periodic, semi-persistent or aperiodic;
  • the configuration unit of the candidate position includes positioning frequency layer, sending and receiving point, positioning reference signal resource set, positioning reference signal resource, terminal or terminal group as a unit;
  • the period of the candidate positions is the same as the period of the PRS; there are one or more candidate positions in one period.
  • the candidate positions are configured in units of positioning frequency layers (per positioning frequency layer), or in units of transmitting and receiving points (per TRP), or in units of positioning reference signal resource sets (per PRS resource set)
  • the configuration is performed in units of positioning reference signal resources (per PRS resource), or in units of terminals or terminal groups (per UE or UE group).
  • the candidate location is associated with the corresponding identifier, such as at least one of frequency layer ID, TRP ID, PRS resource set ID, PRS resource ID, UE ID or UE group ID.
  • these identifiers can be included in the configuration of the candidate location .
  • the candidate location identifiers in one cycle range from 0 to N-1, where N is the number of candidate locations in one cycle, and the candidate location identifiers may be included in the candidate location configuration.
  • the time corresponding to the candidate position timestamp is the earliest, latest, middle or arbitrary subframe subframe or time slot slot or index corresponding to the symbol symbol of the candidate position.
  • the UE indicates the information associated with the candidate location, it will carry the time stamp of the candidate location.
  • the timestamp is determined according to the above manner.
  • the terminal obtains the candidate position of the positioning reference signal PRS, and then detects whether the PRS exists according to the candidate position, and further measures and/or processes the PRS, by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band, improving The success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the transmission efficiency of the positioning reference signal in the unlicensed frequency band is improved.
  • the acquiring the candidate positions of the positioning reference signal PRS by the first terminal includes:
  • the first terminal acquires the candidate positions according to the association relationship between PRS repetition (PRS repetition) and candidate positions.
  • each candidate position corresponds to N times of PRS repetitions, the number of PRS repetitions is M, and the number of candidate positions is in, Indicates rounding up.
  • Fig. 3 is a schematic diagram of the PRS repetition provided by the embodiment of the present application.
  • N is a divisor of the number of PRS repetitions M, and the number of candidate positions is M/N.
  • the PRS repetition number N corresponding to each candidate position represents the number of PRS repetitions during actual PRS transmission.
  • the number of PRS repetitions is indicated by a network device, and the number of PRS repetitions corresponding to each candidate position or the number of candidate positions is indicated by a network device.
  • the network may indicate the number of PRS repetitions, indicating the number of PRS repetitions corresponding to each candidate position, thereby calculating the number of candidate positions; the network may also indicate the number of PRS repetitions, indicating the number of candidate positions, thereby calculating the number of candidate positions The number of PRS repeats contained in each candidate position.
  • the configuration of PRS repetition is included in the configuration of the PRS resource set or TRP or UE or UE group. For all PRS resources in the PRS resource set or TRP or UE or UE group, the configuration of PRS repetition is the same.
  • the PRS repetition may be the repetition of the PRS resources, or the repetition of all the above resources.
  • the UE should assume that the number of PRS repetitions is the sum of the number of PRS repetitions at all candidate positions.
  • the above assumption is enabled (enable) by introducing a specific parameter (such as a 1 bit indication).
  • the starting point of each candidate position is the same as the starting point of the PRS (the first PRS resource or PRS resource set) in the candidate position.
  • the gap of PRS repetition is 1.
  • the gaps of adjacent candidate positions are equal to the gaps of PRS repeats.
  • adjacent candidate positions are continuous in time domain.
  • the period of the PRS candidate position is the same as the PRS period.
  • each candidate position contains all PRS resources in the group.
  • One said group includes one TRP, one UE, or one PRS resource set.
  • the number of candidate positions here may be periodic/semi-persistent PRS transmission, the number of candidate positions within one period; it may also be aperiodic PRS transmission, the total number of candidate positions.
  • the first terminal obtains the candidate locations according to the configuration information of the candidate locations.
  • the configuration information of the candidate locations includes at least one of the following:
  • Candidate location identifier
  • each candidate position includes all PRS resource resource(s) in the group and repeated PRS resources.
  • one said group includes one TRP, one UE, or one PRS resource set.
  • the distribution of PRS in each candidate position is consistent. For example, for candidate position 1, candidate position 2, the position of each PRS in candidate position 1 relative to the starting point of candidate position 1, and the position of each PRS in candidate position 2 relative to the starting point of candidate position 2, is consistent.
  • the first terminal should assume that the PRS position configured by the network device is the PRS position of the first candidate position.
  • the starting point of each candidate position is the same as the starting point of the PRS (the first PRS resource or PRS resource set) in the candidate position.
  • the configuration information of the candidate locations includes at least one of the following:
  • start time of the candidate position (the start time of the first PRS candidate position);
  • PRS configuration information in each candidate position (that is, the candidate position includes PRS configuration);
  • the starting time of the candidate position includes at least one of the following:
  • the above parameters associated with the starting time of the candidate location are used for the UE to determine the starting location of the candidate location of the serving cell or the neighboring cell.
  • each of the candidate positions includes specific PRS resources and/or repeated PRS resources.
  • a PRS candidate position contains a certain PRS resource and/or a repetition of a PRS resource; or a certain PRS candidate position contains some PRS resources and/or a repetition of these PRS resources.
  • the configuration information of the PRS in each candidate position includes at least one of the following:
  • the identifier (resource set ID and/or resource ID) corresponding to the PRS resource and/or PRS resource set.
  • adjacent candidate positions are continuous in time domain.
  • the number of candidate positions here may be periodic/semi-persistent PRS transmission, the number of candidate positions within one period; it may also be aperiodic PRS transmission, the total number of candidate positions.
  • the specific method for the terminal to obtain the candidate position of the positioning reference signal PRS is given.
  • the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and then it can be effectively Improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the measuring and/or processing the PRS includes:
  • the beam scanning pattern is related to a first parameter, and the first parameter includes at least one of the following parameters:
  • Number of PRS resources (the number of PRS resources in the candidate position);
  • PRS repeat count (repeat count in candidate position);
  • the scanning mode corresponding to the beam scanning pattern is scanning first and then repeating, or first repeating and then scanning, for example, PRS resources are 0, 1, 2, and 3 respectively represent different beam directions; the number of repetitions of PRS resources is 2 .
  • the scanning mode is specified by the protocol or indicated by the network.
  • the identifier or index (PRS resource ID/index) of the PRS resource corresponds to the PRS resource at the target (fixed) position in the beam scanning pattern; optionally, the repeated index of the PRS resource (combined with the PRS resource identifier/index) corresponds to the PRS resources with fixed positions repeated.
  • the beam scanning pattern is determined according to at least one of the following:
  • Network device indication
  • the protocol specifies a specific beam scanning pattern; or according to the above first parameter, multiple beam scanning patterns are specified, and the network indicates one of them.
  • the beam scanning pattern can be obtained.
  • the method also includes:
  • the first terminal receives first indication information
  • the first terminal measures and/or processes the PRS of the candidate location according to the first indication information
  • the first indication information is used to indicate the PRS transmission and/or processing status of the candidate position
  • the first indication information is an indication of a network device or a second terminal.
  • the PRS transmission status of the candidate position refers to whether there is PRS transmission at the candidate position.
  • a bit value of '1' represents PRS transmission, that is, indicates that the terminal has PRS transmission at the candidate position;
  • '0' represents no PRS transmission, that is, indicates that the terminal has no PRS transmission at the candidate position.
  • the processing condition of the candidate position indicates whether to process the PRS at the candidate position.
  • a bit value of '1' means processing the PRS, that is, instructing the terminal to process the PRS at the candidate position; '0' means not transmitting the PRS, that is, instructing the terminal not to process the PRS at the candidate position (or indicating that the PRS is not transmission).
  • the UE caches the candidate positions for a certain period of time, and processes the PRS of the corresponding candidate positions according to the first indication information.
  • the first indication information includes at least one of the following:
  • the TRP ID of the sending and receiving point associated with the candidate location is the TRP ID of the sending and receiving point associated with the candidate location.
  • the first indication information indicates the PRS transmission and/or processing conditions of the X candidate positions, and includes two aspects of information. On the one hand, it indicates the PRS transmission and/or processing conditions of the candidate positions, and on the other hand, it indicates Which candidate positions the indication acts on.
  • the PRS transmission and/or processing conditions of the X candidate positions include at least one of the following:
  • COT Channel Occupancy Time
  • X is predefined by the protocol, configured by the network device or the second terminal, or indicated by the first indication information.
  • the PRS transmission situation of the candidate location is indicated according to the bitmap.
  • each bit in the bitmap represents a candidate position; a bit value of '1' means transmission, and '0' means no transmission.
  • the PRS transmission and/or processing condition also includes an indication of the transmission and/or processing condition of the PRS resource or PRS repetition in the candidate position. For example, which/some PRS resource or PRS in a certain/multiple candidate positions are repeatedly transmitted and/or processed.
  • the receiving the first indication information includes one of the following:
  • the first indication information is received, and the first indication information is carried in the payload after the listen-before-talk LBT succeeds.
  • the first indication information is sent in the licensed frequency band in the sidelink, and the SL-PRS is sent/received in the unlicensed frequency band.
  • the first indication information is a network device indication, including at least one of the following indications:
  • Radio Resource Control Radio Resource Control, RRC
  • DCI Downlink Control Information
  • the first indication information is an indication of the second terminal, including:
  • the first indication information is the second terminal indicating at least one of the following:
  • the effective range of the first indication information is within a channel occupancy time (Channel Occupancy Time, COT) duration Duration.
  • COT Channel Occupancy Time
  • the validity range of the first indication information is indicated as downlink (Downlink, DL) and/or flexible (flexible) symbols within the COT duration.
  • the first indication information is included in a COT indication.
  • the method also includes:
  • the UE shall assume that the PRS of this or these candidate positions is available and process the corresponding PRS.
  • the UE shall assume that the PRS of the candidate position is available and process the corresponding PRS.
  • the behavior corresponding to the PRS sender is: the PRS sender performs LBT before the candidate position, and if it is detected to be busy, then performs LBT before the next candidate position; until the LBT If it is idle, it will occupy the channel time of COT duration, and send PRS at the PRS candidate position at this time or send PRS at the candidate position corresponding to DL and/or flexible symbols within this time.
  • the method also includes:
  • the UE shall assume that the PRS of the candidate position is available and process the corresponding PRS.
  • the SFI indication is indicated by DCI 2-0.
  • the terminal receives and/or processes the PRS of the candidate position by receiving the transmission and/or processing status indication of the candidate position, which improves the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band, thereby effectively improving the unlicensed frequency band terminal.
  • the detecting whether the PRS exists includes:
  • the UE performs blind detection of the PRS at the candidate position without receiving the PRS transmission indication (such as the first indication information) at the candidate position.
  • the PRS transmission indication such as the first indication information
  • a PRS after the first successful reception or (blind) detection of a PRS, further includes:
  • the second terminal indication receive or process the PRS of the subsequent candidate position; or,
  • the first terminal successfully receives the PRS for the first time, it receives or processes the PRS of the subsequent candidate location according to the network instruction, the second terminal instruction, the protocol agreement or the first terminal selection.
  • the content indicated by the network device, indicated by the second terminal, predefined by the protocol, or selected by the first terminal includes at least one of the following:
  • network indication/second terminal indication/protocol agreement/UE selection at a certain PRS candidate position, the UE detects the PRS for the first time, and the UE does not expect to receive or not process the PRS of the subsequent candidate position; or , at a certain PRS candidate position, the UE detects the PRS for the first time, and the UE needs to receive or process the PRS of the subsequent candidate position.
  • network indication/second terminal indication/protocol agreement/UE selection after successfully detecting the PRS of the first candidate position, the UE receives or processes the PRS of the candidate position at most and/or least (continues) The number of times, or the number of times that the candidate position PRS needs to be (continued) received or processed. According to the indication of the number of times, the PRS of the candidate position is received or processed.
  • the first terminal needs to receive PRSs of all remaining candidate positions.
  • the network indication here may be a pre-configured indication.
  • the first terminal receives or processes PRSs of subsequent candidate positions according to the second indication information.
  • the second indication information indicates the transmission and/or processing status of the subsequent candidate position PRS in the form of a bitmap.
  • the second indication information is indicated by the network device in the authorized frequency band or carried in the payload after the LBT succeeds.
  • the valid range of the second indication information is within a channel occupancy time (Channel Occupancy Time, COT) duration Duration.
  • COT Channel Occupancy Time
  • the validity range of the second indication information is indicated as downlink (Downlink, DL) and/or flexible (flexible) symbols within the COT duration.
  • the second indication information is included in the COT indication.
  • Indicating the PRS transmission in the unlicensed frequency band in the licensed frequency band can further improve the flexibility and integrity of the system.
  • the first terminal reports the actually received candidate location information of the PRS to the network device.
  • the terminal receives and/or processes the PRS of the subsequent candidate position according to the transmission and/or processing status indication of the subsequent candidate position, which improves the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band, and can effectively improve Transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the PRS after said measuring the PRS, it also includes:
  • the PRS candidate location information actually received by the first terminal includes but is not limited to at least one of the following: candidate location identifier, candidate location timestamp, sending and receiving point identifier TRP ID, candidate location associated PRS resource and/or or resource set ID.
  • the processing of the PRS it also includes:
  • the first terminal downloads the PRS buffers of all PRS candidate positions, and then performs processing.
  • the embodiments of the present application can effectively improve the transmission efficiency of positioning reference signals in unlicensed frequency bands, and help improve positioning efficiency.
  • FIG. 4 is the second schematic flow diagram of the positioning reference signal processing method provided in the embodiment of the present application.
  • the execution subject of the method is the second network device. As shown in FIG. 4 , the method includes the following steps:
  • Step 400 the second network device performs listen-before-talk LBT according to the candidate location information of the positioning reference signal PRS, or sends the PRS after the LBT is successful.
  • the second network device is a serving base station and/or a neighboring cell base station.
  • the candidate position information of the positioning reference signal may be determined in one of the following ways:
  • Candidate location information is preconfigured or predefined
  • the second network device determines the candidate location information, sends the candidate location information to the first network device, and the first network device reconfigures it to the first terminal;
  • the first network device determines multiple sets of candidate location information, and sends the multiple sets of candidate location information to the second network device.
  • the second network device determines specific candidate location information, feeds it back to the first network device, and then the first network device sends the candidate location information to the first terminal.
  • the second network device performs listen-before-talk LBT before the candidate positions according to the candidate position information of the positioning reference signal PRS. If it is detected that the channel is empty, that is, the LBT is successful, the positioning reference signal is sent at the corresponding candidate position.
  • the second network device first performs listen-before-talk LBT according to the candidate location information of the positioning reference signal PRS, and sends the PRS after the LBT is successful.
  • the second network device performs listen-before-talk LBT according to the candidate location information of the positioning reference signal PRS, or sends the PRS after the LBT is successful, by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band, which can The success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, thereby improving the transmission efficiency of the positioning reference signal in the unlicensed frequency band.
  • the method also includes:
  • the actually sent candidate location information of the PRS is reported to the first network device and/or other second network devices participating in positioning.
  • other second network devices participating in positioning are neighboring cell base stations.
  • the method also includes:
  • the PRS of the remaining candidate positions may or may not be sent.
  • FIG. 5 is the third schematic flow diagram of the positioning reference signal processing method provided in the embodiment of the present application.
  • the execution subject of the method is the second terminal. As shown in FIG. 5 , the method includes the following steps:
  • Step 500 the second terminal performs listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or sends the PRS after the LBT is successful.
  • the second terminal may be another UE in the sidelink, or an RSU, or a control node in the sidelink.
  • candidate location information may be determined in the following manner:
  • the second terminal is determined
  • the candidate locations are pre-configured or predefined;
  • the second terminal selects a specific candidate location configuration; optionally, the candidate location information is sent to the first network device (location server);
  • the location server determines candidate location information, and the location server sends the candidate location information to the second terminal.
  • the second terminal performs LBT based on the candidate location information of the positioning reference signal PRS, or sends the PRS after the LBT is successful, and increases the transmission opportunity of the positioning reference signal in the unlicensed frequency band, thereby improving the Transmission efficiency of positioning reference signals in unlicensed frequency bands in sidelink scenarios.
  • the method further includes:
  • the method further includes:
  • FIG. 6 is the fourth schematic flow diagram of the positioning reference signal processing method provided by the embodiment of the present application.
  • the execution subject of the method is the first network device. As shown in FIG. 6 , the method includes the following steps:
  • Step 600 the first network device sends the candidate position information of the positioning reference signal PRS to other second network devices participating in positioning.
  • the first network device is a location server.
  • the location server can be a location management function (Location Management Function, LMF) network element or an Evolved Serving Mobile Location Center (Evolved Serving Mobile Location Center, E-SMLC) or other servers with a location calculation function.
  • LMF Location Management Function
  • E-SMLC Evolved Serving Mobile Location Center
  • other second network devices participating in positioning may be serving base stations and/or neighboring base stations.
  • the first network device sends the candidate position information of the positioning reference signal PRS to other second network devices participating in positioning, and by sending the candidate position information of the positioning reference signal PRS, the unlicensed frequency band positioning reference signal is added transmission opportunities, thereby improving the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the first network device receives the actually sent PRS candidate location information reported by the second network device or the second terminal, and forwards the actually sent PRS candidate location information to other second network devices participating in positioning.
  • the first network device sends the PRS configuration information to other second network devices participating in positioning, so as to assist the other second network devices participating in positioning to eliminate the PRS interference of the second network device participating in positioning in neighboring cells during LBT;
  • the PRS configuration information includes at least one of the following: PRS candidate location information, PRS sequence, and PRS mapping.
  • the positioning reference signal processing method provided in the embodiment of the present application may be executed by a positioning reference signal processing device, or a control module in the positioning reference signal processing device for executing the positioning reference signal processing method.
  • the positioning reference signal processing device provided in the embodiment of the present application is described by taking the positioning reference signal processing device executing the positioning reference signal processing method as an example.
  • the embodiment of the present application also provides a positioning reference signal processing method, including:
  • the terminal obtains the candidate positions of the reference signals used for positioning
  • the reference signals used for positioning include but are not limited to: sounding reference signal (Sounding reference signal, SRS), other signals that can be used for uplink positioning, and the like.
  • Sounding reference signal Sounding reference signal, SRS
  • other signals that can be used for uplink positioning and the like.
  • the following uses the SRS as an example to further illustrate the solutions of the embodiments of the present application.
  • the SRS in the following solutions can be replaced with other signals for uplink positioning.
  • the step of the terminal acquiring the candidate positions of the reference signals used for positioning may be implemented in but not limited to the following ways:
  • each of the candidate positions corresponds to N SRS repetitions, the number of SRS repetitions is M, and the number of candidate positions is
  • the configuration information of the candidate locations includes at least one of the following:
  • Candidate location identifier
  • each candidate position includes all SRS resources in the group and repeated SRS resources; the SRS distribution in each candidate position is consistent;
  • one group includes one terminal, or one SRS resource set.
  • the distribution of SRS in each candidate position is consistent. For example, for candidate position 1, candidate position 2, the position of each SRS in candidate position 1 relative to the starting point of candidate position 1, and the position of each SRS in candidate position 2 relative to the starting point of candidate position 2, is consistent.
  • the first terminal should assume that the SRS position configured by the network device is the SRS position of the first candidate position.
  • the starting point of each candidate position is the same as the starting point of the SRS (the first SRS resource or SRS resource set) in the candidate position.
  • the configuration information of the candidate locations includes at least one of the following:
  • each of the candidate positions includes specific SRS resources and/or repeated SRS resources.
  • the distribution of SRS in each candidate position is consistent
  • the starting time of the candidate position includes at least one of the following:
  • the configuration information of the SRS in each candidate position includes at least one of the following:
  • SRS candidate locations may be configured by the serving base station.
  • the SRS candidate location information may be sent by the serving base station to the location server, and then sent by the location server to neighboring cell base stations participating in positioning.
  • the base station in the neighboring cell may perform blind detection at the SRS candidate position.
  • the sending the SRS includes:
  • the beam scanning pattern is related to a second parameter, and the second parameter includes at least one of the following parameters:
  • Number of SRS resources (the number of SRS resources in the candidate position);
  • the scanning mode corresponding to the beam scanning pattern is to scan first and then repeat, or to repeat first and then scan, for example, the SRS resources are 0, 1, 2, and 3 respectively represent different beam directions; the number of repetitions of the SRS resources is 2 .
  • Scan first and then repeat it is sent in the order of 0,1,2,3 0,1,2,3; Repeat first and then scan, it is sent in the order of 0,0,1,1,2,2,3,3 .
  • the scanning mode is specified by the protocol or indicated by the network.
  • the identifier or index (SRS resource ID/index) of the SRS resource corresponds to the target position in the beam scanning pattern.
  • the beam scanning pattern is determined according to at least one of the following:
  • Network device indication
  • the agreement specifies a specific beam scanning pattern; or according to the above second parameter, multiple beam scanning patterns are specified, and the network indicates one of them.
  • the beam scanning pattern can be obtained.
  • the candidate position is intercepted to obtain an interception result, and according to the interception result, the step of sending the reference signal includes but is not limited to the following interception methods:
  • Manner 1 Sensing is performed for each candidate position, and if it is detected that the channel is empty, the reference signal is sent at the corresponding candidate position.
  • Method 2 Listen to the candidate positions in order. If the channel is detected to be busy, then the next candidate position will be detected. If the channel is detected to be empty, then the channel will be sent at the candidate position where the channel is empty and the subsequent candidate positions. the reference signal.
  • Method 3 Listen to the candidate positions in order. If the detected channel is busy, then detect the next candidate position. If the detected channel is empty, send a reference signal at the candidate position within the channel occupation time COT.
  • the length of the COT may be 1 ms.
  • the method also includes:
  • the actually sent SRS candidate location information is reported to the first network device and/or other second network devices participating in positioning.
  • the actually sent SRS candidate location information includes at least one of the following: a candidate location identifier, a candidate location timestamp, and an SRS resource and/or resource set identifier associated with the candidate location.
  • the method also includes:
  • the terminal acquires a candidate position of a reference signal used for positioning, intercepts the candidate position, obtains an interception result, and sends the reference signal according to the interception result , by increasing the transmission opportunity of the reference signal used for positioning in the unlicensed frequency band, the success rate of the reference signal sent by the terminal in the unlicensed frequency band is improved, thereby improving the transmission efficiency of the positioning reference signal in the unlicensed frequency band, which helps to improve positioning efficiency.
  • FIG. 7 is one of the schematic structural diagrams of a positioning reference signal processing device provided in an embodiment of the present application.
  • the positioning reference signal processing device 700 includes: a first acquiring unit 710 and a first processing unit 720, wherein,
  • the first obtaining unit 710 is configured to obtain a candidate position of the positioning reference signal PRS;
  • the first processing unit 720 is configured to perform a first operation according to the candidate position
  • the first operation includes at least one of the following:
  • the PRS is measured and/or processed.
  • the terminal obtains the candidate position of the positioning reference signal PRS, and then detects whether the PRS exists according to the candidate position, and further measures and/or processes the PRS, by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band, improving The success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the transmission efficiency of the positioning reference signal in the unlicensed frequency band is improved.
  • the first acquiring unit 710 is configured to:
  • each candidate position corresponds to N times of PRS repetitions, the number of PRS repetitions is M, and the number of candidate positions is
  • the configuration information of the candidate locations includes at least one of the following:
  • Candidate location identifier
  • each candidate position includes all PRS resources in the group and repeated PRS resources; the PRS distribution in each candidate position is consistent;
  • one said group includes one transmitting and receiving point TRP, one terminal, or one PRS resource set.
  • the configuration information of the candidate locations includes at least one of the following:
  • each of the candidate positions includes specific PRS resources and/or repeated PRS resources.
  • the configuration information of the PRS in each candidate position includes at least one of the following:
  • An identifier corresponding to the PRS resource and/or the PRS resource set is an identifier corresponding to the PRS resource and/or the PRS resource set.
  • the specific method of obtaining the candidate position of the positioning reference signal PRS is given.
  • the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, which can effectively improve Transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the measuring and/or processing the PRS includes:
  • the beam scanning pattern is related to a first parameter, and the first parameter includes at least one of the following parameters:
  • the scanning mode corresponding to the beam scanning pattern is to scan first and then repeat, or to repeat first and then scan, and the scanning mode is stipulated in a protocol or indicated by a network.
  • the identifier or index of the PRS resource corresponds to the target position in the beam scanning pattern.
  • the beam scanning pattern is determined according to at least one of the following:
  • Network device indication
  • the device also includes:
  • a first receiving unit configured to receive first indication information
  • a second receiving unit configured to measure and/or process the PRS of the candidate position according to the first indication information
  • the first indication information is used to indicate the PRS transmission and/or processing status of the candidate position
  • the first indication information is an indication of a network device or a second terminal.
  • the first indication information includes at least one of the following:
  • the TRP ID of the sending and receiving point associated with the candidate location is the TRP ID of the sending and receiving point associated with the candidate location.
  • the PRS transmission and/or processing conditions of the X candidate positions include at least one of the following:
  • X is predefined by the protocol, configured by the network device or the second terminal, or indicated by the first indication information.
  • the receiving the first indication information includes one of the following:
  • the first indication information is received, and the first indication information is carried in the payload after the listen-before-talk LBT succeeds.
  • the effective range of the first indication information is within the channel occupancy time COT duration Duration.
  • the transmission and/or processing status indication of the candidate position by receiving the transmission and/or processing status indication of the candidate position, receiving and/or processing the PRS of the candidate position, the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the unlicensed frequency band terminal can be effectively improved.
  • the transmission efficiency of the frequency band positioning reference signal by receiving the transmission and/or processing status indication of the candidate position, receiving and/or processing the PRS of the candidate position, the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the unlicensed frequency band terminal can be effectively improved.
  • the transmission efficiency of the frequency band positioning reference signal by receiving the transmission and/or processing status indication of the candidate position, receiving and/or processing the PRS of the candidate position, the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the unlicensed frequency band terminal can be effectively improved.
  • the detecting whether the PRS exists includes:
  • the device further includes a second processing unit, and the second processing unit is configured to: after successfully receiving or detecting the PRS for the first time,
  • the second terminal indication receive or process the PRS of the subsequent candidate position; or,
  • the content indicated by the network device, indicated by the second terminal, predefined by the protocol, or selected by the first terminal includes at least one of the following:
  • the second indication information indicates the transmission and/or processing status of the subsequent candidate position PRS in the form of a bitmap.
  • the second indication information is indicated by a network device.
  • the terminal receives and/or processes the PRS of the subsequent candidate position according to the transmission and/or processing status indication of the subsequent candidate position, which improves the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band, and can effectively improve Transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the device also includes:
  • the first sending unit is configured to report a measurement result to the network device, where the measurement result includes candidate location information of the PRS actually received by the first terminal.
  • the candidate location information of the PRS actually received by the first terminal includes at least one of the following: candidate location identifier, candidate location timestamp, sending and receiving point identifier TRP ID, PRS resource and/or resource set associated with the candidate location logo.
  • the device also includes:
  • the first cache unit is configured to cache the PRSs of all candidate positions.
  • the embodiments of the present application can effectively improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the positioning reference signal processing device in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or a component, an integrated circuit, or a chip in a terminal.
  • the apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the positioning reference signal processing device provided in the embodiment of the present application can realize each process realized by the method embodiments in FIG. 2 to FIG. 3 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • Fig. 8 is the second structural schematic diagram of the positioning reference signal processing device provided by the embodiment of the present application. As shown in Fig. 8, the positioning reference signal processing device 800 includes:
  • the third processing unit 810 is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • LBT is performed after listening first, or the PRS is sent after the LBT is successful.
  • the success rate of receiving the positioning reference signal by the terminal improves the transmission efficiency of the positioning reference signal in the unlicensed frequency band.
  • the device also includes:
  • the second sending unit is configured to report the actually sent candidate location information of the PRS to the first network device and/or other second network devices participating in positioning after the LBT succeeds in the unlicensed frequency band.
  • the device also includes:
  • the fourth processing unit is configured to, after successfully sending the PRS of the first candidate position, send or not send the PRS of the remaining candidate positions.
  • the positioning reference signal processing device in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or a component, an integrated circuit, or a chip in a terminal.
  • the apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the positioning reference signal processing device provided in the embodiment of the present application can realize each process realized by the method embodiment in FIG. 4 and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • Fig. 9 is the third structural schematic diagram of the positioning reference signal processing device provided by the embodiment of the present application. As shown in Fig. 9, the positioning reference signal processing device 900 includes:
  • the fifth processing unit 910 is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • LBT is performed before listening, or the PRS is sent after the LBT is successful, and the sidelink scenario is improved by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band The transmission efficiency of the positioning reference signal in the lower unlicensed frequency band.
  • the device also includes:
  • the third sending unit is configured to report the actually sent candidate location information of the PRS to the first network device and/or other base stations participating in the positioning after the LBT succeeds in the unlicensed frequency band.
  • the device also includes:
  • the sixth processing unit is configured to send or not send the PRS of the remaining candidate positions after successfully sending the PRS of the first candidate position.
  • the positioning reference signal processing device provided in the embodiment of the present application can realize each process realized by the method embodiment in Fig. 5, and achieve the same technical effect, and to avoid repetition, details are not repeated here.
  • Fig. 10 is the fourth structural schematic diagram of the positioning reference signal processing device provided by the embodiment of the present application. As shown in Fig. 10, the positioning reference signal processing device 1000 includes:
  • the fourth sending unit 1010 is configured to send the candidate location information of the positioning reference signal PRS to other second network devices participating in positioning.
  • the candidate position information of the positioning reference signal PRS is sent to other second network devices participating in the positioning, and the transmission opportunity of the positioning reference signal in the unlicensed frequency band is increased by sending the candidate position information of the positioning reference signal PRS. In turn, the transmission efficiency of the positioning reference signal in the unlicensed frequency band is improved.
  • the device also includes:
  • the seventh processing unit is configured to receive the actually sent PRS candidate location information reported by the second network device or the second terminal, and forward the actually sent PRS candidate location information to other second network devices participating in positioning.
  • the device also includes:
  • the fifth sending unit is configured to send PRS configuration information to other second network devices participating in positioning, so as to assist the other second network devices participating in positioning to exclude the PRS of the second network device participating in positioning in neighboring cells during LBT interference;
  • the PRS configuration information includes at least one of the following: PRS candidate location information, PRS sequence, and PRS mapping.
  • the positioning reference signal processing device provided in the embodiment of the present application can realize each process realized by the method embodiment in FIG. 6 and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • this embodiment of the present application further provides a communication device 1100, including a processor 1101, a memory 1102, and programs or instructions stored in the memory 1102 and operable on the processor 1101,
  • a communication device 1100 including a processor 1101, a memory 1102, and programs or instructions stored in the memory 1102 and operable on the processor 1101
  • the communication device 1100 is a terminal
  • the program or instruction is executed by the processor 1101
  • each process of the above embodiment of the positioning reference signal processing method can be realized, and the same technical effect can be achieved.
  • the communication device 1100 is a network-side device, when the program or instruction is executed by the processor 1101, each process of the above positioning reference signal processing method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to obtain a candidate position of the positioning reference signal PRS; according to the candidate position, perform a first operation; wherein the first operation includes at least the following One: Detect the presence of a PRS; measure and/or process the PRS. .
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1200 includes, but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210, etc. at least some of the components.
  • the terminal 1200 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1210 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 12 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042, and the graphics processor 12041 is used for the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1207 includes a touch panel 12071 and other input devices 12072 . Touch panel 12071, also called touch screen.
  • the touch panel 12071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1201 receives the downlink data from the network side device, and processes it to the processor 1210; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 1209 can be used to store software programs or instructions as well as various data.
  • the memory 1209 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1209 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 1210 may include one or more processing units; optionally, the processor 1210 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1210 .
  • processor 1210 is used for:
  • the first operation includes at least one of the following:
  • the PRS is measured and/or processed.
  • the terminal obtains the candidate position of the positioning reference signal PRS, and then detects whether the PRS exists according to the candidate position, and further measures and/or processes the PRS, by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band, improving The success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and the transmission efficiency of the positioning reference signal in the unlicensed frequency band is improved.
  • the acquiring the candidate positions of the positioning reference signal PRS includes:
  • each candidate position corresponds to N times of PRS repetitions, the number of PRS repetitions is M, and the number of candidate positions is
  • the configuration information of the candidate locations includes at least one of the following:
  • Candidate location identifier
  • each candidate position includes all PRS resources in the group and repeated PRS resources; the PRS distribution in each candidate position is consistent;
  • one said group includes one TRP, one UE, or one PRS resource set.
  • the configuration information of the candidate locations includes at least one of the following:
  • each of the candidate positions includes specific PRS resources and/or repeated PRS resources.
  • the configuration information of the PRS in each candidate position includes at least one of the following:
  • An identifier corresponding to the PRS resource and/or the PRS resource set is an identifier corresponding to the PRS resource and/or the PRS resource set.
  • the specific method for the terminal to obtain the candidate position of the positioning reference signal PRS is given.
  • the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band is improved, and then it can be effectively Improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the measuring and/or processing the PRS includes:
  • the beam scanning pattern is related to a first parameter, and the first parameter includes at least one of the following parameters:
  • the scanning mode corresponding to the beam scanning pattern is to scan first and then repeat, or to repeat first and then scan, and the scanning mode is stipulated in a protocol or indicated by a network.
  • the identifier or index of the PRS resource corresponds to the target position in the beam scanning pattern.
  • the beam scanning pattern is determined according to at least one of the following:
  • Network device indication
  • the radio frequency unit 1201 is configured to:
  • the first indication information is used to indicate the PRS transmission and/or processing status of the candidate position
  • the first indication information is an indication of a network device or a second terminal.
  • the first indication information includes at least one of the following:
  • the TRP ID of the sending and receiving point associated with the candidate location is the TRP ID of the sending and receiving point associated with the candidate location.
  • the PRS transmission and/or processing conditions of the X candidate positions include at least one of the following:
  • X is predefined by the protocol, configured by the network device or the second terminal, or indicated by the first indication information.
  • the receiving the first indication information includes one of the following:
  • the first indication information is received, and the first indication information is carried in the payload after the listen-before-talk LBT succeeds.
  • the effective range of the first indication information is within the channel occupancy time COT duration Duration.
  • the terminal receives and/or processes the PRS of the candidate position by receiving the transmission and/or processing status indication of the candidate position, which improves the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band, thereby effectively improving the unlicensed frequency band terminal.
  • the detecting whether the PRS exists includes:
  • the processor 1210 is further configured to: after successfully receiving or detecting the PRS for the first time,
  • the second terminal indication receive or process the PRS of the subsequent candidate position; or,
  • the content indicated by the network device, indicated by the second terminal, predefined by the protocol, or selected by the first terminal includes at least one of the following:
  • the second indication information indicates the transmission and/or processing status of the subsequent candidate position PRS in the form of a bitmap.
  • the second indication information is indicated by a network device.
  • the terminal receives and/or processes the PRS of the subsequent candidate position according to the transmission and/or processing status indication of the subsequent candidate position, which improves the success rate of receiving the positioning reference signal by the terminal in the unlicensed frequency band, and can effectively improve Transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the radio frequency unit 1201 is also used for:
  • the candidate location information of the PRS actually received by the first terminal includes at least one of the following: a candidate location identifier, a candidate location timestamp, and a sending and receiving point identifier TRP ID.
  • the processor 1210 is further configured to: cache the PRSs of all candidate positions.
  • the embodiments of the present application can effectively improve the transmission efficiency of positioning reference signals in unlicensed frequency bands.
  • the embodiment of the present application also provides a terminal, wherein the processor 1210 is configured to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT succeeds.
  • the radio frequency unit 1201 is also used for:
  • the actually sent candidate location information of the PRS is reported to the first network device and/or other base stations participating in positioning.
  • the radio frequency unit 1201 is further configured to: after successfully sending the PRS of the first candidate position, send or not send the PRS of the remaining candidate positions.
  • the terminal performs LBT based on the candidate location information of the positioning reference signal PRS, or sends the PRS after the LBT is successful, and improves the sidelink scenario by increasing the transmission opportunity of the positioning reference signal in the unlicensed frequency band The transmission efficiency of the positioning reference signal in the lower unlicensed frequency band.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, and the processor is used to perform listen-before-talk LBT according to the candidate position information of the positioning reference signal PRS, or send the PRS after the LBT is successful.
  • This embodiment of the network-side device corresponds to the above-mentioned embodiment of the method in which the execution subject is the second network device.
  • the various implementation processes and implementation methods of the above-mentioned method embodiments can be applied to this embodiment of the network-side device, and can achieve the same technical effect.
  • FIG. 13 is one of the structural schematic diagrams of the network side device provided by the embodiment of the present application.
  • the network side device 1300 includes: an antenna 1301 , a radio frequency device 1302 , and a baseband device 1303 .
  • the antenna 1301 is connected to the radio frequency device 1302 .
  • the radio frequency device 1302 receives information through the antenna 1301, and sends the received information to the baseband device 1303 for processing.
  • the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302
  • the radio frequency device 1302 processes the received information and sends it out through the antenna 1301 .
  • the foregoing frequency band processing device may be located in the baseband device 1303 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 1303 , and the baseband device 1303 includes a processor 1304 and a memory 1305 .
  • the baseband device 1303 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the baseband device 1303 may also include a network interface 1306 for exchanging information with the radio frequency device 1302, such as a common public radio interface (common public radio interface, CPRI for short).
  • a network interface 1306 for exchanging information with the radio frequency device 1302, such as a common public radio interface (common public radio interface, CPRI for short).
  • the network-side device in this embodiment of the present invention also includes: instructions or programs stored in the memory 1305 and operable on the processor 1304, and the processor 1304 calls the instructions or programs in the memory 1305 to execute the modules shown in FIG. 8 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.
  • the embodiment of the present application also provides a network side device.
  • This embodiment of the network-side device corresponds to the above-mentioned embodiment of the method in which the execution subject is the first network device.
  • Each implementation process and implementation manner of the foregoing method embodiments can be applied to the network side device embodiment, and can achieve the same technical effect.
  • Fig. 14 is the second structural diagram of the network-side device provided by the embodiment of the present application.
  • the network-side device 1400 includes: a processor 1401, a transceiver 1402, a memory 1403, a user interface 1404 and a bus interface, wherein :
  • the network-side device 1400 further includes: a computer program stored in the memory 1403 and operable on the processor 1401, the computer program is executed by the processor 1401 to perform the method performed by each module shown in FIG. 10 , and achieves The same technical effects are not described here in order to avoid repetition.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1401 and various circuits of memory represented by memory 1403 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • Transceiver 1402 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media.
  • the user interface 1404 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, displays, speakers, microphones, joysticks, and so on.
  • the processor 1401 is responsible for managing the bus architecture and general processing, and the memory 1403 can store data used by the processor 1401 when performing operations.
  • the embodiment of the present application also provides a readable storage medium.
  • the readable storage medium stores a program or an instruction.
  • the program or instruction is executed by the processor, the various processes in the above embodiment of the positioning reference signal processing method are implemented, and can To achieve the same technical effect, in order to avoid repetition, no more details are given here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above positioning reference signal processing method
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run programs or instructions to implement the above positioning reference signal processing method
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande appartient au domaine technique des communications, et divulgue un procédé de traitement de signal de référence de positionnement. Le procédé de traitement de signal de référence de positionnement selon les modes de réalisation de la présente demande comprend les étapes suivantes dans lesquelles : un premier terminal acquiert une position candidate d'un signal de référence de positionnement (PRS), et effectue une première opération en fonction de la position candidate, la première opération comprenant au moins l'une des actions suivantes : détecter si un PRS est présent ; et mesurer et/ou traiter le PRS.
PCT/CN2022/108483 2021-07-29 2022-07-28 Procédé de traitement de signal de référence de positionnement, terminal et dispositif côté réseau WO2023006015A1 (fr)

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CN202110865565.6A CN115694756A (zh) 2021-07-29 2021-07-29 定位参考信号处理方法、终端及网络侧设备

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN106161317A (zh) * 2015-04-08 2016-11-23 中国移动通信集团公司 一种同步方法及装置
US20180054792A1 (en) * 2015-03-06 2018-02-22 Lg Electronics Inc. Reference signal reception method in wireless communication system, and device for same
WO2020022709A1 (fr) * 2018-07-20 2020-01-30 엘지전자 주식회사 Procédé et dispositif d'émission ou de réception d'un canal de données de liaison descendante dans une bande sans licence
WO2020095449A1 (fr) * 2018-11-09 2020-05-14 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180054792A1 (en) * 2015-03-06 2018-02-22 Lg Electronics Inc. Reference signal reception method in wireless communication system, and device for same
CN106161317A (zh) * 2015-04-08 2016-11-23 中国移动通信集团公司 一种同步方法及装置
WO2020022709A1 (fr) * 2018-07-20 2020-01-30 엘지전자 주식회사 Procédé et dispositif d'émission ou de réception d'un canal de données de liaison descendante dans une bande sans licence
WO2020095449A1 (fr) * 2018-11-09 2020-05-14 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil

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