WO2024021128A1 - 同步参考源的确定方法及装置 - Google Patents

同步参考源的确定方法及装置 Download PDF

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Publication number
WO2024021128A1
WO2024021128A1 PCT/CN2022/109257 CN2022109257W WO2024021128A1 WO 2024021128 A1 WO2024021128 A1 WO 2024021128A1 CN 2022109257 W CN2022109257 W CN 2022109257W WO 2024021128 A1 WO2024021128 A1 WO 2024021128A1
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WIPO (PCT)
Prior art keywords
synchronization reference
reference source
information
terminal device
sidelink
Prior art date
Application number
PCT/CN2022/109257
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English (en)
French (fr)
Inventor
江小威
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/109257 priority Critical patent/WO2024021128A1/zh
Priority to CN202280002650.2A priority patent/CN115529858A/zh
Publication of WO2024021128A1 publication Critical patent/WO2024021128A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application relates to the field of communication technology, and in particular to a method and device for determining a synchronization reference source.
  • Positioning based on the sidelink between the terminal device and the terminal device includes absolute positioning, relative positioning, and ranging.
  • Absolute positioning is to determine the absolute coordinates of the terminal device
  • relative positioning is to determine the coordinates of the terminal device relative to a reference point
  • ranging is to determine the distance and/or angle of the terminal device relative to a reference point.
  • absolute positioning and relative positioning may involve multiple auxiliary terminal devices to participate in positioning.
  • the first embodiment of the present application provides a method for determining a synchronization reference source.
  • the method is executed by a first terminal device.
  • the method includes:
  • the target synchronization reference source is used for positioning of sidelinks.
  • the second embodiment of the present application provides a method for determining a synchronization reference source.
  • the method is executed by a second terminal device.
  • the method includes:
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the third embodiment of the present application proposes a method for determining a synchronization reference source.
  • the method is executed by an access network device.
  • the method includes:
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the fourth embodiment of the present application proposes a method for determining a synchronization reference source.
  • the method is executed by a core network device.
  • the method includes:
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the fifth aspect embodiment of the present application provides a device for determining a synchronization reference source.
  • the device is applied to a first terminal device.
  • the device includes:
  • a transceiver unit used for first information related to the synchronization reference source
  • a processing unit configured to determine the target synchronization reference source of the first terminal device according to the first information
  • the target synchronization reference source is used for positioning of sidelinks.
  • the sixth aspect of the present application provides an apparatus for determining a synchronization reference source.
  • the apparatus is applied to a second terminal device.
  • the apparatus includes:
  • a transceiver unit configured to send first information related to the synchronization reference source to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the seventh embodiment of the present application provides a device for determining a synchronization reference source.
  • the device is applied to access network equipment.
  • the device includes:
  • a transceiver unit configured to send first information related to the synchronization reference source to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the eighth embodiment of the present application proposes a device for determining a synchronization reference source.
  • the device is applied to core network equipment.
  • the device includes:
  • a transceiver unit configured to send first information related to the synchronization reference source to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning of sidelinks.
  • the ninth aspect of the present application provides a communication device.
  • the device includes a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory so that the The device performs the method for determining the synchronization reference source described in the above-mentioned embodiment of the first aspect, or performs the method for determining the synchronization reference source described in the above-mentioned embodiment of the second aspect.
  • the tenth embodiment of the present application provides a communication device.
  • the device includes a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory so that the The device performs the method for determining the synchronization reference source described in the above embodiment of the third aspect, or performs the method for determining the synchronization reference source described in the above embodiment of the fourth aspect.
  • An eleventh aspect embodiment of the present application provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method for determining the synchronization reference source described in the above-mentioned embodiment of the first aspect, or performs the method for determining the synchronization reference source described in the above-mentioned embodiment of the second aspect.
  • the twelfth embodiment of the present application provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method for determining the synchronization reference source described in the above embodiment of the third aspect, or performs the method for determining the synchronization reference source described in the above embodiment of the fourth aspect.
  • the thirteenth embodiment of the present application provides a computer-readable storage medium for storing instructions.
  • the instructions When the instructions are executed, the method for determining the synchronization reference source described in the first embodiment is implemented. , or the method for determining the synchronization reference source described in the embodiment of the second aspect is implemented.
  • the fourteenth embodiment of the present application provides a computer-readable storage medium for storing instructions.
  • the instructions When the instructions are executed, the method for determining the synchronization reference source described in the third embodiment is implemented. , or the method for determining the synchronization reference source described in the embodiment of the fourth aspect is implemented.
  • the fifteenth aspect embodiment of the present application proposes a computer program that, when run on a computer, causes the computer to perform the method for determining the synchronization reference source described in the above-mentioned first aspect embodiment, or to perform the above-mentioned second aspect embodiment.
  • the method for determining the synchronization reference source is not limited to the above-mentioned first aspect embodiment, or to perform the above-mentioned second aspect embodiment.
  • the sixteenth aspect embodiment of the present application proposes a computer program that, when run on a computer, causes the computer to perform the method for determining the synchronization reference source described in the above-mentioned third aspect embodiment, or to perform the above-mentioned fourth aspect embodiment.
  • the method for determining the synchronization reference source is not limited to the above-mentioned third aspect embodiment, or to perform the above-mentioned fourth aspect embodiment.
  • the embodiments of the present application provide a method and device for determining a synchronization reference source, by receiving first information related to the synchronization reference source, and determining the target synchronization reference source of the first terminal device based on the first information, wherein, the The target synchronization reference source is used for sidelink positioning, so that each terminal equipment participating in sidelink positioning can perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between each positioning auxiliary terminal equipment. It can effectively improve the accuracy and precision of sidelink positioning results and improve positioning efficiency.
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 3 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 4 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 5 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 6 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 7 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 8 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application
  • Figure 9 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a device for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of a device for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a device for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a device for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 14 is a schematic structural diagram of another device for determining a synchronization reference source provided by an embodiment of the present application.
  • Figure 15 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in the embodiments of this application, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • the words "if” and “if” as used herein may be interpreted as "when” or "when” or “in response to determining.”
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but is not limited to a core network device, an access network device and terminal devices.
  • the number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present application. Practical applications may include Two or more network devices and two or more terminal devices.
  • the communication system shown in Figure 1 includes a core network device 101, an access network device 102 and four terminal devices 103-106 as an example.
  • LTE Long Term Evolution
  • 5G new air interface system 5G new air interface system
  • other future new mobile communication systems 5G new air interface system
  • the access network device 102 in the embodiment of this application is an entity on the network side that is used to transmit or receive signals.
  • the access network equipment 102 may be an evolved base station (Evolved NodeB, eNB), a transmission point (Transmission Reception Point, TRP), a next generation base station (Next Generation NodeB, gNB) in an NR system, or other future mobile communication systems.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the access network equipment.
  • the access network equipment provided by the embodiments of this application may be composed of a centralized unit (Central Unit, CU) and a distributed unit (Distributed Unit, DU).
  • the CU may also be called a control unit (Control Unit).
  • Control Unit Control Unit
  • CU The structure of DU can separate the protocol layers of access network equipment, such as base stations, with some protocol layer functions placed under centralized control on the CU, while the remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU .
  • the terminal devices 103-106 in the embodiment of this application are an entity on the user side that is used to receive or transmit signals, such as a mobile phone.
  • Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (Mobile Station, MS), mobile terminal equipment (Mobile Terminal, MT), etc.
  • Terminal devices can be cars with communication functions, smart cars, mobile phones, wearable devices, tablets (Pad), computers with wireless transceiver functions, virtual reality (Virtual Reality, VR) terminal devices, augmented reality ( Augmented Reality (AR) terminal equipment, wireless terminal equipment in industrial control (Industrial Control), wireless terminal equipment in self-driving (Self-Driving), wireless terminal equipment in remote surgery (Remote Medical Surgery), smart grid ( Wireless terminal equipment in Smart Grid, wireless terminal equipment in Transportation Safety, wireless terminal equipment in Smart City, wireless terminal equipment in Smart Home, etc.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.
  • Positioning based on the sidelink between the terminal device and the terminal device includes absolute positioning, relative positioning, and ranging.
  • Absolute positioning is to determine the absolute coordinates of the terminal device
  • relative positioning is to determine the coordinates of the terminal device relative to a reference point
  • ranging is to determine the distance and/or angle of the terminal device relative to a reference point.
  • absolute positioning and relative positioning may involve multiple auxiliary terminal devices to participate in positioning.
  • DL-TDOA Downlink Time Difference of Arrival
  • UL-TDOA Uplink Time Difference of Arrival
  • Multiple Cell-Round Trip Time , multiple RTT
  • angle of arrival/angle of departure Angle of Arrival/Angle of Departure, AOA/AOD
  • carrier phase positioning etc.
  • the terminal device 103 can receive positioning reference signals (Positioning Reference signals) sent by multiple terminal devices (terminal devices 104-106 in the figure) through sidelinks (SL). Signal, PRS), the terminal device 103 can determine its own specific position relative to the terminal device 104-106 by measuring the multiple SL PRS. If the positioning result is not converted into absolute position coordinates based on absolute position information such as GPS of the positioning assistance terminal device, then the positioning result is a relative positioning result. On the contrary, it is absolute positioning. Terminal devices that participate in relative positioning/absolute positioning are positioning auxiliary terminal devices.
  • positioning auxiliary terminal equipment such as Road Side Unit (RSU) type positioning auxiliary terminal equipment. It is an infrastructure that can provide positioning services by cooperating with other RSUs; such as ordinary
  • the terminal device can also be used as a positioning auxiliary terminal device, but it is difficult for it to assist in providing positioning services together with other terminal devices; in addition, some positioning auxiliary terminal devices have location information such as GPS, which can assist other terminal devices in absolute positioning; some other positioning devices
  • the auxiliary terminal device may not have location information such as GPS and cannot assist the positioned terminal device in absolute positioning.
  • PRS is sent from multiple positioning auxiliary terminal devices to the positioned terminal device.
  • the synchronization sources of the clocks of multiple positioning assistance terminal devices may be different. This makes it difficult to determine the clock source deviation between various positioning auxiliary terminal devices.
  • Figure 2 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in this embodiment of the present application is executed by the first terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 2, the method may include the following steps:
  • Step 201 Receive first information related to the synchronization reference source.
  • the first terminal device can receive the first information sent by at least one of the second terminal device, the access network device and the core network device, and can determine the side link positioning based on the first information.
  • the target synchronization reference source can be used to determine the side link positioning based on the first information.
  • both the first terminal equipment and the second terminal equipment are side link terminal equipment
  • the SL terminal equipment includes at least one of the following: primary positioning auxiliary terminal equipment; positioning auxiliary terminal equipment; positioned terminal equipment.
  • the first terminal device can be any one of the main positioning auxiliary terminal device, the positioning auxiliary terminal device, and the positioned terminal device
  • the second terminal device can also be the main positioning auxiliary terminal. Any of the equipment, positioning auxiliary terminal equipment, and the terminal equipment being positioned.
  • the positioning auxiliary terminal device refers to the auxiliary terminal device participating in the SL positioning of the positioned terminal device.
  • the main positioning auxiliary terminal device refers to the terminal device and network equipment (including access network equipment and core network equipment) that are determined between multiple positioning auxiliary terminal devices when assisting in positioning. ) and other positioning auxiliary terminal equipment for communication. That is, if there is a main positioning auxiliary terminal device among multiple positioning auxiliary terminal devices, the main positioning auxiliary terminal device interacts with the positioned terminal device, and the main positioning auxiliary terminal device interacts with network equipment (including interfaces). network access equipment and core network equipment) to interact.
  • the main positioning auxiliary terminal device can also interact with other positioning auxiliary terminal devices.
  • the core network device may be a location management function (LMF).
  • LMF location management function
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information may be sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first terminal device receives the first information sent by the second terminal device.
  • the first terminal device receives the first information sent by the access network device.
  • the first terminal device receives the first information sent by the core network device.
  • the first terminal device receives the first information sent by the second terminal device and the access network device.
  • the first terminal device receives the first information sent by the second terminal device and the core network device.
  • the first terminal device receives the first information sent by the access network device and the core network device.
  • the first terminal device receives the first information sent by the second terminal device, the access network device and the core network device.
  • the first information is used to prioritize at least one synchronization reference source type.
  • the first information may be at least one of the following: Global Navigation Satellite System (GNSS) priority; access network equipment priority; sidelink terminal equipment priority.
  • GNSS Global Navigation Satellite System
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • SL SSID Sidelink Synchronizing Sequence Identity
  • SL SSB Sidelink Synchronization Signal and PBCH Block
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the coverage indication of the terminal device is used to indicate whether the terminal device is connected to the serving cell and whether it is in coverage.
  • the SL SSB time domain allocation information may include at least one of the following: SL SSB transmission cycle, SL SSB transmission time offset, the number of SSBs transmitted in one cycle, etc.
  • the parameter sl-SSB-TimeAllocation can be used to indicate the SL SSB time domain allocation information.
  • This parameter definition can refer to 3GPP technical specification TS38.331.
  • the access network equipment identification may include at least one of a Physical Cell Identifier (PCI) and a Global Cell Identity (GCI) of the cell where the access network equipment is located.
  • PCI Physical Cell Identifier
  • GCI Global Cell Identity
  • the first information may indicate one or more candidate synchronization reference sources. If the first information indicates multiple candidate synchronization reference sources, the first information also includes priorities of the multiple candidate synchronization reference sources.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source. .
  • the priority information may be at least one of the following: GNSS priority; access network equipment priority; SL terminal equipment priority.
  • the first indication information may be used to indicate at least one of the following information:
  • the SL SSID of the terminal device that is the candidate synchronization reference source
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: the absolute threshold value of the reference signal receiving power (RSRP) of the target synchronization reference source; the relative reference signal receiving power RSRP of the target synchronization reference source. Threshold value; layer 3 filter coefficient of the target synchronization reference source.
  • RSRP reference signal receiving power
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be a Physical Sidelink Broadcast Channel (PSBCH) RSRP, or it can be a SL PRS RSRP, etc.
  • PSBCH Physical Sidelink Broadcast Channel
  • the first information sent by the second terminal device may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a sidelink radio resource Control (Radio Resource Control, RRC) message.
  • a sidelink positioning protocol message may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a sidelink radio resource Control (Radio Resource Control, RRC) message.
  • RRC Radio Resource Control
  • the sidelink positioning protocol message can be a sidelink LPP (LTE Positioning Protocol, LTE positioning protocol) message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • LPP LTE Positioning Protocol, LTE positioning protocol
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the first information sent by the access network device may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; and a radio resource control RRC connection release (release) message.
  • the first information sent by the core network device through the access network device may be included in an LTE positioning protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • Step 202 Determine the target synchronization reference source of the first terminal device based on the first information.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the first terminal device can determine its own target synchronization reference source for SL positioning based on the received first information.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first terminal device determines the target synchronization reference source for positioning based on the first information, and the synchronization reference source for SL communication still follows the synchronization reference for SL communication. Source related information is determined. If the target synchronization reference source is shared by SL positioning and SL communication, the determined target synchronization reference source can be used for both SL positioning and SL communication.
  • the first information is GNSS priority, which determines GNSS as the target synchronization reference source of the first terminal device.
  • the first terminal device cannot obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is a priority of the sidelink terminal device, and the sidelink terminal device is determined as the target synchronization reference source of the first terminal device.
  • the SL terminal equipment includes: one or more of a main positioning auxiliary terminal equipment, a positioning auxiliary terminal equipment and a positioned terminal equipment.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is the priority of the access network device, and the access network device is determined as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • gNB/eNB Access network equipment
  • sidelink terminal equipment terminal equipment directly synchronized to gNB/eNB
  • terminal equipment indirectly synchronized to gNB/eNB terminal equipment indirectly synchronized to gNB/eNB
  • GNSS terminal equipment directly synchronized to GNSS
  • indirect synchronized to GNSS terminal equipment other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is used to indicate at least one candidate synchronization reference source, and the first terminal device can determine the target synchronization reference source from the at least one candidate synchronization reference source.
  • the first information is used to indicate multiple candidate synchronization reference sources, and the first information also includes priorities of the multiple candidate synchronization reference sources, and the first terminal device can determine the priority based on the priorities of the multiple candidate synchronization reference sources. level, from which the target synchronization reference source is determined.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source.
  • the first terminal device can determine the target synchronization reference source from at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device if the first terminal device cannot obtain at least one candidate synchronization reference source indicated by the first indication information, then determine the target synchronization reference source of the first terminal device according to the priority information.
  • the first terminal device may also send feedback to at least one of the second terminal device, the access network device and the core network device.
  • Information wherein the feedback information is used to indicate that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the failure to obtain at least one candidate synchronization reference source indicated by the first indication information means that the first terminal device cannot obtain any one of the at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device may preferentially receive the first terminal device according to the first terminal device.
  • the first information in a terminal device-specific message determines the target synchronization reference source of the first terminal device.
  • the broadcast message includes a broadcast message sent by the access network device and an SL broadcast message sent by the second terminal device.
  • the first terminal device-specific message includes a dedicated message sent by the access network device, and an SL first terminal device-specific message sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the target synchronization reference source may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the target synchronization reference source if the first terminal device receives the first information sent by the second terminal device and the access network device, the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the first terminal device may follow the provisions of the protocol or instructions of other information.
  • the priority is to determine the target synchronization reference source of the first terminal device based on the first information sent by the second terminal device or the access network device or the core network device.
  • Figure 3 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in this embodiment of the present application is executed by the first terminal device. This method can be executed independently or in combination with any other embodiment of the present application. As shown in Figure 3, the method may include the following steps:
  • Step 301 Receive first information sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first information is used to determine the priority of at least one synchronization reference source type.
  • the first information may be at least one of the following: GNSS priority; access network device priority; SL terminal device priority.
  • the first terminal device and the second terminal device are both SL terminal devices, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; positioned terminal device .
  • the core network device may be the location management function LMF.
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information may be sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first terminal device receives the first information sent by the second terminal device.
  • the first terminal device receives the first information sent by the access network device.
  • the first terminal device receives the first information sent by the core network device.
  • the first terminal device receives the first information sent by the second terminal device and the access network device.
  • the first terminal device receives the first information sent by the second terminal device and the core network device.
  • the first terminal device receives the first information sent by the access network device and the core network device.
  • the first terminal device receives the first information sent by the second terminal device, the access network device and the core network device.
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: an RSRP absolute threshold value of the target synchronization reference source; a relative RSRP threshold value of the target synchronization reference source; and a layer 3 filter coefficient of the target synchronization reference source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be PSBCH RSRP, SL PRS RSRP, etc.
  • the first information sent by the second terminal device may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a SL RRC message.
  • the sidelink positioning protocol message can be a sidelink LPP message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the first information sent by the access network device may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; a radio resource control RRC connection release message.
  • the first information sent by the core network device may be included in an LTE positioning protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • Step 302 Determine the target synchronization reference source of the first terminal device based on the first information.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first information is GNSS priority, which determines GNSS as the target synchronization reference source of the first terminal device.
  • the first terminal device cannot obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is a priority of the sidelink terminal device, and the sidelink terminal device is determined as the target synchronization reference source of the first terminal device.
  • the SL terminal equipment includes: one or more of a main positioning auxiliary terminal equipment, a positioning auxiliary terminal equipment and a positioned terminal equipment.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is the priority of the access network device, and the access network device is determined as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • gNB/eNB Access network equipment
  • sidelink terminal equipment terminal equipment directly synchronized to gNB/eNB
  • terminal equipment indirectly synchronized to gNB/eNB terminal equipment indirectly synchronized to gNB/eNB
  • GNSS terminal equipment directly synchronized to GNSS
  • indirect synchronized to GNSS terminal equipment other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first terminal device may preferentially receive the first terminal device according to the first terminal device.
  • the first information in a terminal device-specific message determines the target synchronization reference source of the first terminal device.
  • the broadcast message includes a broadcast message sent by the access network device and an SL broadcast message sent by the second terminal device.
  • the first terminal device-specific message includes a dedicated message sent by the access network device, and an SL first terminal device-specific message sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the target synchronization reference source may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the target synchronization reference source if the first terminal device receives the first information sent by the second terminal device and the access network device, the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the first terminal device may follow the provisions of the protocol or instructions of other information.
  • the priority is to determine the target synchronization reference source of the first terminal device based on the first information sent by the second terminal device or the access network device or the core network device.
  • the first information is used to determine the priority of at least one synchronization reference source type, according to the first information , determine the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can perform clock synchronization based on the same synchronization reference source, try to eliminate the clock source deviation between each positioning auxiliary terminal device, and effectively Improve the accuracy and precision of sidelink positioning results and improve positioning efficiency.
  • Figure 4 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 4, the method may include the following steps:
  • Step 401 Receive first information sent by at least one of the second terminal device, the access network device and the core network device, where the first information is Global Navigation Satellite System GNSS priority.
  • the priority of each synchronization reference source type used for determination from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first terminal device and the second terminal device are both SL terminal devices, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; positioned terminal device .
  • the core network device may be the location management function LMF.
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information may be sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first terminal device receives the first information sent by the second terminal device.
  • the first terminal device receives the first information sent by the access network device.
  • the first terminal device receives the first information sent by the core network device.
  • the first terminal device receives the first information sent by the second terminal device and the access network device.
  • the first terminal device receives the first information sent by the second terminal device and the core network device.
  • the first terminal device receives the first information sent by the access network device and the core network device.
  • the first terminal device receives the first information sent by the second terminal device, the access network device and the core network device.
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: an RSRP absolute threshold value of the target synchronization reference source; a relative RSRP threshold value of the target synchronization reference source; and a layer 3 filter coefficient of the target synchronization reference source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be PSBCH RSRP, SL PRS RSRP, etc.
  • the first information sent by the second terminal device may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a SL RRC message.
  • the sidelink positioning protocol message can be a sidelink LPP message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the first information sent by the access network device may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; a radio resource control RRC connection release message.
  • the first information sent by the core network device may be included in an LTE positioning protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • Step 402 Determine GNSS as the target synchronization reference source of the first terminal device.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • Step 403 In response to the failure to obtain GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the first terminal device if it cannot obtain GNSS as the target synchronization reference source, it can determine the SL terminal device as its own target synchronization reference source.
  • the first terminal device may determine the target synchronization reference source according to the sequence as exemplarily shown in step 401.
  • the first information is the global navigation satellite system GNSS priority
  • the GNSS is determined as the target synchronization of the first terminal equipment.
  • Reference source in response to being unable to obtain GNSS as the target synchronization reference source, determining the sidelink terminal device as the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can be based on the same synchronization reference
  • the source is clock synchronized to try to eliminate the clock source deviation between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • FIG. 5 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 5, the method may include the following steps:
  • Step 501 Receive first information sent by at least one of the second terminal device, the access network device, and the core network device, where the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the SL SSID of the terminal device that is the candidate synchronization reference source
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information may indicate one or more candidate synchronization reference sources. If the first information indicates multiple candidate synchronization reference sources, the first information also includes priorities of the multiple candidate synchronization reference sources.
  • the first terminal device and the second terminal device are both SL terminal devices, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; positioned terminal device .
  • the core network device may be the location management function LMF.
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information may be sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first terminal device receives the first information sent by the second terminal device.
  • the first terminal device receives the first information sent by the access network device.
  • the first terminal device receives the first information sent by the core network device.
  • the first terminal device receives the first information sent by the second terminal device and the access network device.
  • the first terminal device receives the first information sent by the second terminal device and the core network device.
  • the first terminal device receives the first information sent by the access network device and the core network device.
  • the first terminal device receives the first information sent by the second terminal device, the access network device and the core network device.
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: an RSRP absolute threshold value of the target synchronization reference source; a relative RSRP threshold value of the target synchronization reference source; and a layer 3 filter coefficient of the target synchronization reference source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be PSBCH RSRP, SL PRS RSRP, etc.
  • the first information sent by the second terminal device may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a SL RRC message.
  • the sidelink positioning protocol message can be a sidelink LPP message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the first information sent by the access network device may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; a radio resource control RRC connection release message.
  • the first information sent by the core network device may be included in an LTE positioning protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • Step 502 Determine a target synchronization reference source of the first terminal device from the at least one candidate synchronization reference source.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the first terminal device can determine its own target synchronization reference source for SL positioning from at least one candidate synchronization reference source indicated by the first information based on the received first information.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first information is used to indicate multiple candidate synchronization reference sources, and the first information also includes priorities of the multiple candidate synchronization reference sources, and the first terminal device can determine the priority based on the priorities of the multiple candidate synchronization reference sources. level, from which the target synchronization reference source is determined.
  • the first terminal device may preferentially receive the first terminal device according to the first terminal device.
  • the first information in a terminal device-specific message determines the target synchronization reference source of the first terminal device.
  • the broadcast message includes a broadcast message sent by the access network device and an SL broadcast message sent by the second terminal device.
  • the first terminal device-specific message includes a dedicated message sent by the access network device, and an SL first terminal device-specific message sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the target synchronization reference source may preferentially determine the first terminal device based on the first information sent by the second terminal device.
  • the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the target synchronization reference source if the first terminal device receives the first information sent by the second terminal device and the access network device, the first terminal device may preferentially determine the first terminal device based on the first information sent by the access network device.
  • the first terminal device may follow the provisions of the protocol or instructions of other information.
  • the priority is to determine the target synchronization reference source of the first terminal device according to the first information sent by the second terminal device or the access network device or the core network device.
  • the first information is used to indicate at least one candidate synchronization reference source, from the at least one candidate synchronization reference source , determine the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between each positioning auxiliary terminal device, and can Effectively improve the accuracy and precision of sidelink positioning results and improve positioning efficiency.
  • FIG. 6 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in the embodiment of the present application is executed by the terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 6, the method may include the following steps:
  • Step 601 Receive first information sent by at least one of the second terminal device, the access network device and the core network device, where the first information includes priority information and first indication information.
  • the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source.
  • the priority information may be at least one of the following: GNSS priority; access network equipment priority; SL terminal equipment priority.
  • the first indication information may be used to indicate at least one of the following information:
  • the SL SSID of the terminal device that is the candidate synchronization reference source
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first indication information may indicate one or more candidate synchronization reference sources. If the first indication information indicates multiple candidate synchronization reference sources, the first indication information also includes the priorities of the multiple candidate synchronization reference sources. .
  • the first terminal device and the second terminal device are both SL terminal devices, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; positioned terminal device .
  • the core network device may be the location management function LMF.
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information may be sent by at least one of the second terminal device, the access network device, and the core network device.
  • the first terminal device receives the first information sent by the second terminal device.
  • the first terminal device receives the first information sent by the access network device.
  • the first terminal device receives the first information sent by the core network device.
  • the first terminal device receives the first information sent by the second terminal device and the access network device.
  • the first terminal device receives the first information sent by the second terminal device and the core network device.
  • the first terminal device receives the first information sent by the access network device and the core network device.
  • the first terminal device receives the first information sent by the second terminal device, the access network device and the core network device.
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: an RSRP absolute threshold value of the target synchronization reference source; a relative RSRP threshold value of the target synchronization reference source; and a layer 3 filter coefficient of the target synchronization reference source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be PSBCH RSRP, SL PRS RSRP, etc.
  • the first information sent by the second terminal device may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a SL RRC message.
  • the sidelink positioning protocol message can be a sidelink LPP message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the first information sent by the access network device may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; a radio resource control RRC connection release message.
  • the first information sent by the core network device may be included in an LTE positioning protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • Step 602 Determine the target synchronization reference source of the first terminal device from at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device when the received first information includes priority information and first indication information, the first terminal device preferentially determines the first terminal device from at least one candidate synchronization reference source indicated by the first indication information.
  • the device's target synchronization reference source when the received first information includes priority information and first indication information, the first terminal device preferentially determines the first terminal device from at least one candidate synchronization reference source indicated by the first indication information.
  • the first indication information is used to indicate multiple candidate synchronization reference sources.
  • the first indication information also includes the priorities of the multiple candidate synchronization reference sources.
  • the first terminal device can perform the synchronization reference source based on the multiple candidate synchronization reference sources. priority, from which the target synchronization reference source is determined.
  • Step 603 In response to the failure to obtain at least one candidate synchronization reference source indicated by the first indication information, determine the target synchronization reference source of the first terminal device according to the priority information.
  • the target synchronization of the first terminal device is determined based on the priority information in the first information. Reference source.
  • the first terminal device can determine the target synchronization reference source of the first terminal device according to the priority of each synchronization reference source type determined by the priority information.
  • the first terminal device may also send a request to at least one of the second terminal device, the access network device and the core network device. Send feedback information, where the feedback information is used to indicate that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the first information includes the priority information and the first indication information, from the first indication information indicated Determine the target synchronization reference source of the first terminal device among at least one candidate synchronization reference source, and determine the target synchronization reference source of the first terminal device according to the priority information in response to the inability to obtain at least one candidate synchronization reference source indicated by the first indication information.
  • the reference source enables each terminal equipment participating in sidelink positioning to perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between various positioning auxiliary terminal equipment, which can effectively improve the accuracy of sidelink positioning results. performance and accuracy to improve positioning efficiency.
  • FIG. 7 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in this embodiment of the present application is executed by the second terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 7, the method may include the following steps:
  • Step 701 Send first information to the first terminal device, where the first information is used to determine the target synchronization reference source of the first terminal device.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • both the first terminal equipment and the second terminal equipment are side link terminal equipment
  • the SL terminal equipment includes at least one of the following: primary positioning auxiliary terminal equipment; positioning auxiliary terminal equipment; positioned terminal equipment.
  • the first terminal device can be any one of the main positioning auxiliary terminal device, the positioning auxiliary terminal device, and the positioned terminal device
  • the second terminal device can also be the main positioning auxiliary terminal. Any of the equipment, positioning auxiliary terminal equipment, and the terminal equipment being positioned.
  • the positioning auxiliary terminal device refers to the auxiliary terminal device participating in the SL positioning of the positioned terminal device.
  • the main positioning auxiliary terminal device refers to the terminal device and network equipment (including access network equipment and core network equipment) that are determined between multiple positioning auxiliary terminal devices when assisting in positioning. ) and other positioning auxiliary terminal equipment for communication. That is, if there is a main positioning auxiliary terminal device among multiple positioning auxiliary terminal devices, the main positioning auxiliary terminal device interacts with the positioned terminal device, and the main positioning auxiliary terminal device interacts with network equipment (including interfaces). network access equipment and core network equipment) to interact.
  • the main positioning auxiliary terminal device can also interact with other positioning auxiliary terminal devices.
  • the first information is used to prioritize at least one synchronization reference source type.
  • the first information may be at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information may indicate one or more candidate synchronization reference sources. If the first information indicates multiple candidate synchronization reference sources, the first information also includes priorities of the multiple candidate synchronization reference sources.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source. .
  • the priority information may be at least one of the following: GNSS priority; access network equipment priority; SL terminal equipment priority.
  • the first indication information may be used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: the reference signal received power RSRP absolute threshold value of the target synchronization reference source; the reference signal received power RSRP relative threshold value of the target synchronization reference source; the target synchronization reference Layer 3 filter coefficients of the source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be the physical sidelink broadcast channel PSBCH RSRP, or it can be the SL PRS RSRP, etc.
  • the first information may be included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; a sidelink radio resource control RRC message.
  • the sidelink positioning protocol message can be a sidelink LPP message, such as Sidelink LPP requesting auxiliary information and providing auxiliary information, or other sidelink positioning protocol messages.
  • the SL RRC message can be a SL broadcast message or a SL dedicated RRC message, such as an SL RRC reconfiguration message, an SL UE assistance message, and so on.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first terminal device determines the target synchronization reference source for positioning based on the first information, and the synchronization reference source for SL communication still follows the synchronization reference for SL communication. Source related information is determined. If the target synchronization reference source is shared by SL positioning and SL communication, the determined target synchronization reference source can be used for both SL positioning and SL communication.
  • the first information is GNSS priority, which determines GNSS as the target synchronization reference source of the first terminal device.
  • the first terminal device cannot obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is a priority of the sidelink terminal device, and the sidelink terminal device is determined as the target synchronization reference source of the first terminal device.
  • the SL terminal equipment includes: one or more of a main positioning auxiliary terminal equipment, a positioning auxiliary terminal equipment and a positioned terminal equipment.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is the priority of the access network device, and the access network device is determined as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • gNB/eNB Access network equipment
  • sidelink terminal equipment terminal equipment directly synchronized to gNB/eNB
  • terminal equipment indirectly synchronized to gNB/eNB terminal equipment indirectly synchronized to gNB/eNB
  • GNSS terminal equipment directly synchronized to GNSS
  • indirect synchronized to GNSS terminal equipment other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is used to indicate at least one candidate synchronization reference source, and the first terminal device can determine the target synchronization reference source from the at least one candidate synchronization reference source.
  • the first information is used to indicate multiple candidate synchronization reference sources, and the first information also includes priorities of the multiple candidate synchronization reference sources, and the first terminal device can determine the priority based on the priorities of the multiple candidate synchronization reference sources. level, from which the target synchronization reference source is determined.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source.
  • the first terminal device can determine the target synchronization reference source from at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device determines the target synchronization reference source of the first terminal device based on the priority information.
  • the second terminal device may also receive feedback information sent by the first terminal device, wherein the feedback information is used to indicate the third An end device cannot synchronize with the indicated target synchronization reference source.
  • the failure to obtain at least one candidate synchronization reference source indicated by the first indication information means that the first terminal device cannot obtain any one of the at least one candidate synchronization reference source indicated by the first indication information.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can perform operations based on the same synchronization reference source.
  • Clock synchronization tries to eliminate clock source deviations between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • FIG. 8 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in the embodiment of the present application is executed by the access network device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 8, the method may include the following steps:
  • Step 801 Send first information to the first terminal device, where the first information is used to determine the target synchronization reference source of the first terminal device.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the first terminal device is a side link terminal device, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; and positioned terminal device. That is, in each embodiment of the present application, the first terminal device can be any one of the main positioning auxiliary terminal device, the positioning auxiliary terminal device, and the positioned terminal device.
  • the positioning auxiliary terminal device refers to the auxiliary terminal device participating in the SL positioning of the positioned terminal device.
  • the main positioning auxiliary terminal device refers to the terminal device and network equipment (including access network equipment and core network equipment) that are determined between multiple positioning auxiliary terminal devices when assisting in positioning. ) and other positioning auxiliary terminal equipment for communication. That is, if there is a main positioning auxiliary terminal device among multiple positioning auxiliary terminal devices, the main positioning auxiliary terminal device interacts with the positioned terminal device, and the main positioning auxiliary terminal device interacts with network equipment (including interfaces). network access equipment and core network equipment) to interact.
  • the main positioning auxiliary terminal device can also interact with other positioning auxiliary terminal devices.
  • the access network device can receive the first information sent by the core network device and transparently transmit the first information to the first terminal device.
  • the first information may be included in an LTE positioning protocol LPP message.
  • the LPP message may request auxiliary information and/or provide auxiliary information for LPP.
  • the first information is used to prioritize at least one synchronization reference source type.
  • the first information may be at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information may indicate one or more candidate synchronization reference sources. If the first information indicates multiple candidate synchronization reference sources, the first information also includes priorities of the multiple candidate synchronization reference sources.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source. .
  • the priority information may be at least one of the following: GNSS priority; access network equipment priority; SL terminal equipment priority.
  • the first indication information may be used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: the reference signal received power RSRP absolute threshold value of the target synchronization reference source; the reference signal received power RSRP relative threshold value of the target synchronization reference source; the target synchronization reference Layer 3 filter coefficients of the source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be the physical sidelink broadcast channel PSBCH RSRP, or it can be the SL PRS RSRP, etc.
  • the first information may be included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; and a radio resource control RRC connection release (release) message.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first terminal device determines the target synchronization reference source for positioning based on the first information, and the synchronization reference source for SL communication still follows the synchronization reference for SL communication. Source related information is determined. If the target synchronization reference source is shared by SL positioning and SL communication, the determined target synchronization reference source can be used for both SL positioning and SL communication.
  • the first information is GNSS priority, which determines GNSS as the target synchronization reference source of the first terminal device.
  • the first terminal device cannot obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is a priority of the sidelink terminal device, and the sidelink terminal device is determined as the target synchronization reference source of the first terminal device.
  • the SL terminal equipment includes: one or more of a main positioning auxiliary terminal equipment, a positioning auxiliary terminal equipment and a positioned terminal equipment.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is the priority of the access network device, and the access network device is determined as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • gNB/eNB Access network equipment
  • sidelink terminal equipment terminal equipment directly synchronized to gNB/eNB
  • terminal equipment indirectly synchronized to gNB/eNB terminal equipment indirectly synchronized to gNB/eNB
  • GNSS terminal equipment directly synchronized to GNSS
  • indirect synchronized to GNSS terminal equipment other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is used to indicate at least one candidate synchronization reference source, and the first terminal device can determine the target synchronization reference source from the at least one candidate synchronization reference source.
  • the first information is used to indicate multiple candidate synchronization reference sources, and the first information also includes priorities of the multiple candidate synchronization reference sources, and the first terminal device can determine the priority based on the priorities of the multiple candidate synchronization reference sources. level, from which the target synchronization reference source is determined.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source.
  • the first terminal device can determine the target synchronization reference source from at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device determines the target synchronization reference source of the first terminal device based on the priority information.
  • the second terminal device may also receive feedback information sent by the first terminal device, wherein the feedback information is used to indicate the third An end device cannot synchronize with the indicated target synchronization reference source.
  • the failure to obtain at least one candidate synchronization reference source indicated by the first indication information means that the first terminal device cannot obtain any one of the at least one candidate synchronization reference source indicated by the first indication information.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can perform operations based on the same synchronization reference source.
  • Clock synchronization tries to eliminate the clock source deviation between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • FIG. 9 is a schematic flowchart of a method for determining a synchronization reference source provided by an embodiment of the present application. It should be noted that the method for determining the synchronization reference source in this embodiment of the present application is executed by the second terminal device. This method can be executed independently or in conjunction with any other embodiment of the present application. As shown in Figure 9, the method may include the following steps:
  • Step 901 Send first information to the first terminal device, where the first information is used to determine the target synchronization reference source of the first terminal device.
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the first terminal device is a side link terminal device, wherein the SL terminal device includes at least one of the following: primary positioning auxiliary terminal device; positioning auxiliary terminal device; and positioned terminal device. That is, in each embodiment of the present application, the first terminal device can be any one of the main positioning auxiliary terminal device, the positioning auxiliary terminal device, and the positioned terminal device.
  • the positioning auxiliary terminal device refers to the auxiliary terminal device participating in the SL positioning of the positioned terminal device.
  • the main positioning auxiliary terminal device refers to the terminal device and network equipment (including access network equipment and core network equipment) that are determined between multiple positioning auxiliary terminal devices when assisting in positioning. ) and other positioning auxiliary terminal equipment for communication. That is, if there is a main positioning auxiliary terminal device among multiple positioning auxiliary terminal devices, the main positioning auxiliary terminal device interacts with the positioned terminal device, and the main positioning auxiliary terminal device interacts with network equipment (including interfaces). network access equipment and core network equipment) to interact.
  • the main positioning auxiliary terminal device can also interact with other positioning auxiliary terminal devices.
  • the core network device may be the location management function LMF.
  • information interaction between the first terminal device and the core network device is completed through transparent transmission of the access network. That is, the first terminal device receives information sent by the core network device through the access network device, and the first terminal device sends information to the core network device through the access network device, and so on.
  • the first information is used to prioritize at least one synchronization reference source type.
  • the first information may be at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information may indicate one or more candidate synchronization reference sources. If the first information indicates multiple candidate synchronization reference sources, the first information also includes priorities of the multiple candidate synchronization reference sources.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source. .
  • the priority information may be at least one of the following: GNSS priority; access network equipment priority; SL terminal equipment priority.
  • the first indication information may be used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal device as the candidate synchronization reference source;
  • the type of candidate synchronization reference source is GNSS
  • the type of candidate synchronization reference source is access network equipment
  • Access network device identification as candidate synchronization reference source is
  • the first information further includes second indication information, where the second indication information is used to indicate the effective time of the first information.
  • the second indication information may be used to indicate the effective duration of the first information, or may be used to indicate the time when the first information takes effect and ends, or it may be used to indicate the time when the first information takes effect and the time when it ends.
  • the time can also be used to indicate the time when the first information takes effect, how long it takes effect, etc.
  • the effective start time of the first information may be the moment when the first information is received, or it may be the time when the first information is received.
  • the preset time before or after the moment, etc., where the preset time can be specified by the protocol or indicated by other information.
  • the first information also includes at least one of the following information: the reference signal received power RSRP absolute threshold value of the target synchronization reference source; the reference signal received power RSRP relative threshold value of the target synchronization reference source; the target synchronization reference Layer 3 filter coefficients for the source.
  • the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the target synchronization reference source.
  • the target synchronization reference source is the side link terminal equipment.
  • meeting the RSRP absolute threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP absolute threshold.
  • Meeting the RSRP relative threshold requirement means that the RSRP of the candidate synchronization reference source exceeds the RSRP relative threshold compared with the RSRP of the current synchronization reference source of the first terminal device.
  • the RSRP can be the physical sidelink broadcast channel PSBCH RSRP, or it can be the SL PRS RSRP, etc.
  • the first information may be included in an LTE Positioning Protocol LPP message.
  • the LPP message may be LPP requesting auxiliary information and/or providing auxiliary information.
  • the use of the target synchronization reference source for SL positioning means that the target synchronization reference source can be used in at least one of the following situations:
  • SL positioning-related control signaling such as SL positioning protocol messages, SL RRC positioning-related system messages or dedicated RRC messages, etc.
  • the target synchronization reference source may be a synchronization reference source dedicated to SL positioning, or the target synchronization reference source may also be a synchronization reference source common to SL positioning and SL communication.
  • the first terminal device determines the target synchronization reference source for positioning based on the first information, and the synchronization reference source for SL communication still follows the synchronization reference for SL communication. Source related information is determined. If the target synchronization reference source is shared by SL positioning and SL communication, the determined target synchronization reference source can be used for both SL positioning and SL communication.
  • the first information is GNSS priority, which determines GNSS as the target synchronization reference source of the first terminal device.
  • the first terminal device cannot obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • GNSS sidelink terminal equipment
  • terminal equipment directly synchronized to GNSS terminal equipment indirectly synchronized to GNSS
  • access network equipment gNB/eNB
  • terminal equipment directly synchronized to gNB/eNB indirect synchronized to gNB/ eNB’s terminal equipment, other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders may also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is a priority of the sidelink terminal device, and the sidelink terminal device is determined as the target synchronization reference source of the first terminal device.
  • the SL terminal equipment includes: one or more of a main positioning auxiliary terminal equipment, a positioning auxiliary terminal equipment and a positioned terminal equipment.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is the priority of the access network device, and the access network device is determined as the target synchronization reference source of the first terminal device.
  • the priority of each synchronization reference source type from high to low can be as follows:
  • gNB/eNB Access network equipment
  • sidelink terminal equipment terminal equipment directly synchronized to gNB/eNB
  • terminal equipment indirectly synchronized to gNB/eNB terminal equipment indirectly synchronized to gNB/eNB
  • GNSS terminal equipment directly synchronized to GNSS
  • indirect synchronized to GNSS terminal equipment other terminal equipment with the lowest priority, etc.
  • the first terminal device may determine the target synchronization reference source according to the order of priority of each synchronization reference source type as shown above.
  • the above-mentioned priority order of synchronization reference source types is only an example, and other priority orders can also be specified, which is not limited by this application.
  • the first terminal device determines the target synchronization reference source according to this sequence, it may only take part of the sequence or skip part of the sequence, and this application does not limit this.
  • the first information is used to indicate at least one candidate synchronization reference source, and the first terminal device can determine the target synchronization reference source from the at least one candidate synchronization reference source.
  • the first information is used to indicate multiple candidate synchronization reference sources, and the first information also includes priorities of the multiple candidate synchronization reference sources, and the first terminal device can determine the priority based on the priorities of the multiple candidate synchronization reference sources. level, from which the target synchronization reference source is determined.
  • the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate synchronization reference source.
  • the first terminal device can determine the target synchronization reference source from at least one candidate synchronization reference source indicated by the first indication information.
  • the first terminal device determines the target synchronization reference source of the first terminal device based on the priority information.
  • the second terminal device may also receive feedback information sent by the first terminal device, wherein the feedback information is used to indicate the third An end device cannot synchronize with the indicated target synchronization reference source.
  • the failure to obtain at least one candidate synchronization reference source indicated by the first indication information means that the first terminal device cannot obtain any one of the at least one candidate synchronization reference source indicated by the first indication information.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal device participating in sidelink positioning can perform operations based on the same synchronization reference source.
  • Clock synchronization tries to eliminate clock source deviations between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • the present application also provides a device for determining the synchronization reference source. Since the device for determining the synchronization reference source provided by the embodiments of the present application is consistent with the method provided by the above-mentioned embodiments, Corresponding to the method, the implementation of the synchronization reference source determination method is also applicable to the synchronization reference source determination device provided in the following embodiments, and will not be described in detail in the following embodiments.
  • FIG. 10 is a schematic structural diagram of an apparatus for determining a synchronization reference source provided by an embodiment of the present application.
  • the device 1000 for determining the synchronization reference source includes: a transceiver unit 1010 and a processing unit 1020, wherein:
  • Transceiver unit 1010 used for first information related to the synchronization reference source
  • the processing unit 1020 is configured to determine the target synchronization reference source of the first terminal device according to the first information
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the first information is sent by the second terminal device and/or the access network device.
  • the target synchronization reference source is a synchronization reference source dedicated to sidelink positioning, or the target synchronization reference source is a synchronization reference source common to sidelink positioning and sidelink communication.
  • the first information is used to determine the priority of at least one synchronization reference source type.
  • the first information is at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the processing unit 1020 is specifically configured to determine GNSS as the target synchronization reference source of the first terminal device.
  • the processing unit 1020 is further configured to: in response to the inability to obtain the GNSS as the target synchronization reference source, determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal equipment as the candidate synchronization reference source;
  • the type of the candidate synchronization reference source is GNSS
  • the type of the candidate synchronization reference source is access network equipment
  • the access network device identifier used as the candidate synchronization reference source is used as the candidate synchronization reference source.
  • the first information in response to the first information being used to indicate a plurality of candidate synchronization reference sources, the first information further includes priorities of the plurality of candidate synchronization reference sources.
  • the response to the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate Synchronization reference source:
  • the processing unit 1020 is specifically configured to: determine the target synchronization reference source of the first terminal device from at least one candidate synchronization reference source indicated by the first indication information.
  • the processing unit 1020 is specifically configured to: determine the target synchronization reference source of the first terminal device according to the priority information.
  • the transceiver unit 1010 is further configured to: send a request to at least one of the second terminal device, the access network device and the core network device. One sends feedback information; the feedback information is used to indicate that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the first information is included in at least one of the following messages: a sidelink positioning protocol message; an underlying direct-connect cellular communication protocol PC5 message; Link radio resource control RRC message.
  • the first information is included in the LTE positioning protocol LPP message.
  • the first information is included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; a radio resource control RRC connection release information.
  • the processing unit 1020 is also configured to:
  • the target synchronization reference source of the first terminal device is determined.
  • the processing unit 1020 is further configured to: determine the first terminal device according to the first information sent by the second terminal device.
  • Target synchronization reference source is further configured to: determine the first terminal device according to the first information sent by the second terminal device.
  • the first information also includes second indication information, the second indication information is used to indicate the effective time of the first information.
  • the first information also includes at least one of the following information: the absolute threshold value of the reference signal received power RSRP of the target synchronization reference source; the relative threshold value of the reference signal received power RSRP of the target synchronization reference source; the target The layer 3 filter coefficient of the synchronization reference source; wherein, the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the Target synchronization reference source; the target synchronization reference source is the sidelink terminal equipment.
  • the first terminal equipment and the second terminal equipment are side link terminal equipment
  • the side link terminal equipment includes at least one of the following: primary positioning auxiliary terminal equipment; positioning auxiliary terminal equipment; positioned terminal equipment.
  • the device for determining the synchronization reference source in this embodiment may receive the first information sent by at least one of the second terminal equipment, the access network equipment and the core network equipment, and determine the first terminal equipment based on the first information.
  • Target synchronization reference source where the target synchronization reference source is used for sidelink positioning, so that each terminal equipment participating in sidelink positioning can perform clock synchronization based on the same synchronization reference source, and try to eliminate various positioning auxiliary terminals
  • the clock source deviation between devices can effectively improve the accuracy and precision of sidelink positioning results and improve positioning efficiency.
  • FIG. 11 is a schematic structural diagram of an apparatus for determining a synchronization reference source provided by an embodiment of the present application.
  • the synchronization reference source determining device 1100 includes: a transceiver unit 1110, wherein:
  • Transceiver unit 1110 configured to send first information related to the synchronization reference source to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the target synchronization reference source is a synchronization reference source dedicated to sidelink positioning, or the target synchronization reference source is a synchronization reference source common to sidelink positioning and sidelink communication.
  • the first information is used to determine the priority of at least one synchronization reference source type.
  • the first information is at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to determine GNSS as the target synchronization reference source of the first terminal device.
  • the first information is used to determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal equipment as the candidate synchronization reference source;
  • the type of the candidate synchronization reference source is GNSS
  • the type of the candidate synchronization reference source is access network equipment
  • the access network device identifier used as the candidate synchronization reference source is used as the candidate synchronization reference source.
  • the first information in response to the first information being used to indicate a plurality of candidate synchronization reference sources, the first information further includes priorities of the plurality of candidate synchronization reference sources.
  • the response to the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate.
  • the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate.
  • Synchronization reference source; the first indication information is used to determine the target synchronization reference source of the first terminal device.
  • the priority information is used to determine a target synchronization reference source of the first terminal device.
  • the transceiver unit 1110 is further configured to: receive feedback information sent by the first terminal device; the feedback information is Indicates that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the first information is included in at least one of the following messages: sidelink positioning protocol message; underlying direct-connect cellular communication protocol PC5 message; sidelink radio resource control RRC message.
  • the first information also includes second indication information, the second indication information is used to indicate the effective time of the first information.
  • the first information also includes at least one of the following information: the absolute threshold value of the reference signal received power RSRP of the target synchronization reference source; the relative threshold value of the reference signal received power RSRP of the target synchronization reference source; the target The layer 3 filter coefficient of the synchronization reference source; wherein, the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the Target synchronization reference source; the target synchronization reference source is the sidelink terminal equipment.
  • the first terminal equipment and the second terminal equipment are side link terminal equipment
  • the side link terminal equipment includes at least one of the following: primary positioning auxiliary terminal equipment; positioning auxiliary terminal equipment; positioned terminal equipment.
  • the device for determining the synchronization reference source in this embodiment can send first information to the first terminal device.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal participating in sidelink positioning can
  • the equipment can perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • FIG. 12 is a schematic structural diagram of an apparatus for determining a synchronization reference source provided by an embodiment of the present application.
  • the synchronization reference source determining device 1200 includes: a transceiver unit 1210, wherein:
  • Transceiver unit 1210 configured to send first information related to the synchronization reference source to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the transceiver unit 1210 is also configured to receive the first information sent by the access network device.
  • the target synchronization reference source is a synchronization reference source dedicated to sidelink positioning, or the target synchronization reference source is a synchronization reference source common to sidelink positioning and sidelink communication.
  • the first information is used to determine the priority of at least one synchronization reference source type.
  • the first information is at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to determine GNSS as the target synchronization reference source of the first terminal device.
  • the first information is used to determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal equipment as the candidate synchronization reference source;
  • the type of the candidate synchronization reference source is GNSS
  • the type of the candidate synchronization reference source is access network equipment
  • the access network device identifier used as the candidate synchronization reference source is used as the candidate synchronization reference source.
  • the first information in response to the first information being used to indicate a plurality of candidate synchronization reference sources, the first information further includes priorities of the plurality of candidate synchronization reference sources.
  • the response to the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate Synchronization reference source; the first indication information is used to determine the target synchronization reference source of the first terminal device.
  • the priority information is used to determine a target synchronization reference source of the first terminal device.
  • the transceiver unit 1210 is further configured to: receive feedback information sent by the first terminal device; the feedback information is Indicates that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the first information is included in at least one of the following messages: a system broadcast message; a radio resource control RRC reconfiguration message; and a radio resource control RRC connection release message.
  • the first information is included in an LTE positioning protocol LPP message.
  • the first information also includes second indication information, the second indication information is used to indicate the effective time of the first information.
  • the first information also includes at least one of the following information: the absolute threshold value of the reference signal received power RSRP of the target synchronization reference source; the relative threshold value of the reference signal received power RSRP of the target synchronization reference source; the target The layer 3 filter coefficient of the synchronization reference source; wherein, the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the Target synchronization reference source; the target synchronization reference source is the sidelink terminal equipment.
  • the first terminal device is a side link terminal device
  • the side link terminal device includes at least one of the following: a primary positioning auxiliary terminal device; a positioning auxiliary terminal device; and a positioned terminal device.
  • the device for determining the synchronization reference source in this embodiment can send first information to the first terminal device.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal participating in sidelink positioning can
  • the equipment can perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • FIG. 13 is a schematic structural diagram of an apparatus for determining a synchronization reference source provided by an embodiment of the present application.
  • the synchronization reference source determining device 1300 includes: a transceiver unit 1310, wherein:
  • Transceiver unit 1310 configured to send the first information to the first terminal device
  • the first information is used to determine the target synchronization reference source of the first terminal device
  • the target synchronization reference source is used for positioning the sidelink sidelink.
  • the target synchronization reference source is a synchronization reference source dedicated to sidelink positioning, or the target synchronization reference source is a synchronization reference source common to sidelink positioning and sidelink communication.
  • the first information is used to determine the priority of at least one synchronization reference source type.
  • the first information is at least one of the following: global navigation satellite system GNSS priority; access network equipment priority; sidelink terminal equipment priority.
  • the first information is used to determine GNSS as the target synchronization reference source of the first terminal device.
  • the first information is used to determine the sidelink terminal device as the target synchronization reference source of the first terminal device.
  • the first information is used to indicate at least one candidate synchronization reference source.
  • the first information is used to indicate at least one of the following information:
  • the sidelink synchronization sequence identifier SL SSID of the terminal equipment as the candidate synchronization reference source;
  • the type of the candidate synchronization reference source is GNSS
  • the type of the candidate synchronization reference source is access network equipment
  • the access network device identifier used as the candidate synchronization reference source is used as the candidate synchronization reference source.
  • the first information in response to the first information being used to indicate a plurality of candidate synchronization reference sources, the first information further includes priorities of the plurality of candidate synchronization reference sources.
  • the response to the first information includes priority information and first indication information, wherein the priority information is used to determine the priority of at least one synchronization reference source type, and the first indication information is used to indicate at least one candidate Synchronization reference source; the first indication information is used to determine the target synchronization reference source of the first terminal device.
  • the priority information is used to determine a target synchronization reference source of the first terminal device.
  • the transceiver unit 1310 is further configured to: receive feedback information sent by the first terminal device; the feedback information is Indicates that the first terminal device cannot synchronize with the indicated target synchronization reference source.
  • the first information is included in an LTE positioning protocol LPP message.
  • the first information also includes second indication information, the second indication information is used to indicate the effective time of the first information.
  • the first information also includes at least one of the following information: the absolute threshold value of the reference signal received power RSRP of the target synchronization reference source; the relative threshold value of the reference signal received power RSRP of the target synchronization reference source; the target The layer 3 filter coefficient of the synchronization reference source; wherein, the RSRP absolute threshold value or the RSRP relative threshold value is used to determine the candidate synchronization reference source that meets the requirements of the RSRP absolute threshold value or the RSRP relative threshold value as the Target synchronization reference source; the target synchronization reference source is the sidelink terminal equipment.
  • the first terminal device is a side link terminal device
  • the side link terminal device includes at least one of the following: a primary positioning auxiliary terminal device; a positioning auxiliary terminal device; and a positioned terminal device.
  • the device for determining the synchronization reference source in this embodiment can send first information to the first terminal device.
  • the first information is used to determine the target synchronization reference source of the first terminal device, so that each terminal participating in sidelink positioning can
  • the equipment can perform clock synchronization based on the same synchronization reference source, and try to eliminate the clock source deviation between various positioning auxiliary terminal devices, which can effectively improve the accuracy and precision of side link positioning results and improve positioning efficiency.
  • embodiments of the present application also provide a communication device, including: a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program stored in the memory, so that the device executes the steps shown in Figure 2 to The method shown in the embodiment of Figure 6, or the method shown in the embodiment of Figure 7 is executed.
  • embodiments of the present application also provide a communication device, including: a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the implementation in Figure 8
  • a communication device including: a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the implementation in Figure 8
  • embodiments of the present application also provide a communication device, including: a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to Perform the methods shown in the embodiments of Figures 2 to 6, or perform the method shown in the embodiment of Figure 7.
  • embodiments of the present application also provide a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to Execute the method shown in the embodiment of Figure 8, or perform the method shown in the embodiment of Figure 9.
  • FIG. 14 is a schematic structural diagram of another device for determining a synchronization reference source provided by an embodiment of the present application.
  • the synchronization reference source determining device 1400 may be a network device, a terminal device, a chip, a chip system, a processor, etc. that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. Chip system, or processor, etc.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • the synchronization reference source determining device 1400 may include one or more processors 1401 .
  • the processor 1401 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control the device for determining the synchronization reference source (such as base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.) , execute the computer program, and process the data of the computer program.
  • the synchronization reference source determining device 1400 may also include one or more memories 1402, on which a computer program 1403 may be stored.
  • the processor 1401 executes the computer program 1403, so that the synchronization reference source determining device 1400 executes the above Methods described in Method Examples.
  • the computer program 1403 may be solidified in the processor 1401, in which case the processor 1401 may be implemented by hardware.
  • the memory 1402 may also store data.
  • the synchronization reference source determining device 1400 and the memory 1402 can be set up separately or integrated together.
  • the synchronization reference source determining device 1400 may also include a transceiver 1405 and an antenna 1406.
  • the transceiver 1405 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver 1405 may include a receiver and a transmitter.
  • the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
  • the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
  • the synchronization reference source determining device 1400 may also include one or more interface circuits 1407.
  • the interface circuit 1407 is used to receive code instructions and transmit them to the processor 1401 .
  • the processor 1401 executes code instructions to cause the synchronization reference source determining device 1400 to execute the method described in the above method embodiment.
  • the processor 1401 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the device 1400 for determining the synchronization reference source may include a circuit, and the circuit may implement the functions of sending, receiving, or communicating in the foregoing method embodiments.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the device for determining the synchronization reference source described in the above embodiments may be a network device or a terminal device, but the scope of the device for determining the synchronization reference source described in this application is not limited thereto, and the structure of the device for determining the synchronization reference source may not be the same. Subject to the limitations of Figures 10-13.
  • the means for determining the synchronization reference source may be a separate device or may be part of a larger device.
  • the device for determining the synchronization reference source can be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the device for determining the synchronization reference source can be a chip or a chip system
  • the chip shown in Figure 15 includes a processor 1501 and an interface 1502.
  • the number of processors 1501 may be one or more, and the number of interfaces 1502 may be multiple.
  • Interface 1502 for code instructions and transmission to the processor
  • the processor 1501 is configured to run code instructions to perform the methods shown in Figure 2 to Figure 6, or to perform the method shown in Figure 7.
  • Interface 1502 for code instructions and transmission to the processor
  • the processor 1501 is configured to run code instructions to perform the method as shown in Figure 8, or to perform the method as shown in Figure 8.
  • the chip also includes a memory 1503, which is used to store necessary computer programs and data.
  • Embodiments of the present application also provide a communication system that includes a device for determining a synchronization reference source of a terminal device and a device for determining a synchronization reference source of a network device in the embodiments of FIGS. 10-13, or the system includes In the aforementioned embodiment of FIG. 14 , the device for determining the synchronization reference source of the terminal device and the device for determining the synchronization reference source of the network device are used.
  • This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • a computer program product includes one or more computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program may be transmitted from a website, computer, server or data center via a wireline (e.g.
  • Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless means to transmit to another website, computer, server or data center.
  • Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or other integrated media that contains one or more available media. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)) )wait.
  • magnetic media e.g., floppy disks, hard disks, tapes
  • optical media e.g., high-density digital video discs (DVD)
  • semiconductor media e.g., solid state disks (SSD)
  • At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
  • the corresponding relationships shown in each table in this application can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by this application.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.
  • Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

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Abstract

本申请实施例公开了一种同步参考源的确定方法及装置,通过接收与同步参考源相关的第一信息,根据该第一信息,确定该第一终端设备的目标同步参考源,其中,该目标同步参考源用于侧行链路sidelink的定位,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。

Description

同步参考源的确定方法及装置 技术领域
本申请涉及通信技术领域,特别涉及一种同步参考源的确定方法及装置。
背景技术
基于终端设备和终端设备之间的侧行链路(sidelink)的定位包括绝对定位,相对定位,以及测距。绝对定位是确定终端设备的绝对坐标,相对定位则是确定终端设备相对一个参考点的坐标,测距则是确定终端设备相对一个参考点的距离和/或角度。
通常,绝对定位和相对定位可能会涉及多个辅助终端设备来参与定位。
发明内容
本申请第一方面实施例提出了一种同步参考源的确定方法,所述方法由第一终端设备执行,所述方法包括:
接收与同步参考源相关的第一信息;
根据所述第一信息,确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第二方面实施例提出了一种同步参考源的确定方法,所述方法由第二终端设备执行,所述方法包括:
向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第三方面实施例提出了一种同步参考源的确定方法,所述方法由接入网设备执行,所述方法包括:
向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第四方面实施例提出了一种同步参考源的确定方法,所述方法由核心网设备执行,所述方法包括:
向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第五方面实施例提出了一种同步参考源的确定装置,所述装置应用于第一终端设备,所述装置包括:
收发单元,用于与同步参考源相关的第一信息;
处理单元,用于根据所述第一信息,确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第六方面实施例提出了一种同步参考源的确定装置,所述装置应用于第二终端设备,所述装置包括:
收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第七方面实施例提出了一种同步参考源的确定装置,所述装置应用于接入网设备,所述装置包括:
收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第八方面实施例提出了一种同步参考源的确定装置,所述装置应用于核心网设备,所述装置包括:
收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
所述第一信息,用于确定所述第一终端设备的目标同步参考源;
其中,所述目标同步参考源用于侧行链路sidelink的定位。
本申请第九方面实施例提出了一种通信装置,所述装置包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器执行所述存储器中存储的计算机程序,以使所述装置执行上述第一方面实施例所述的同步参考源的确定方法,或者执行上述第二方面实施例所述的同步参考源的确定方法。
本申请第十方面实施例提出了一种通信装置,所述装置包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器执行所述存储器中存储的计算机程序,以使所述装置执行上述第三方面实施例所述的同步参考源的确定方法,或者执行上述第四方面实施例所述的同步参考源的确定方法。
本申请第十一方面实施例提出了一种通信装置,该装置包括处理器和接口电路,该接口电路用于接收代码指令并传输至该处理器,该处理器用于运行所述代码指令以使该装置执行上述第一方面实施例所述的同步参考源的确定方法,或者执行上述第二方面实施例所述的同步参考源的确定方法。
本申请第十二方面实施例提出了一种通信装置,该装置包括处理器和接口电路,该接口电路用于接收代码指令并传输至该处理器,该处理器用于运行所述代码指令以使该装置执行上述第三方面实施例所述的同步参考源的确定方法,或者执行上述第四方面实施例所述的同步参考源的确定方法。
本申请第十三方面实施例提出了一种计算机可读存储介质,用于存储有指令,当所述指令被执行时,使上述第一方面实施例所述的同步参考源的确定方法被实现,或者使上述第二方面实施例所述的同步参考源的确定方法被实现。
本申请第十四方面实施例提出了一种计算机可读存储介质,用于存储有指令,当所述指令被执行时,使上述第三方面实施例所述的同步参考源的确定方法被实现,或者使上述第四方面实施例所述的同步参考源的确定方法被实现。
本申请第十五方面实施例提出了一种计算机程序,当其在计算机上运行时,使得计算机执行上述第一方面实施例所述的同步参考源的确定方法,或者执行上述第二方面实施例所述的同步参考源的确定方法。
本申请第十六方面实施例提出了一种计算机程序,当其在计算机上运行时,使得计算机执行上述第三方面实施例所述的同步参考源的确定方法,或者执行上述第四方面实施例所述的同步参考源的确定方法。
本申请实施例提供的一种同步参考源的确定方法及装置,通过接收与同步参考源相关的第一信息,根据该第一信息,确定该第一终端设备的目标同步参考源,其中,该目标同步参考源用于侧行链路sidelink的定位,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
本申请附加的方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案,下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1为本申请实施例提供的一种通信系统的架构示意图;
图2是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图3是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图4是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图5是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图6是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图7是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图8是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图9是本申请实施例提供的一种同步参考源的确定方法的流程示意图;
图10是本申请实施例提供的一种同步参考源的确定装置的结构示意图;
图11是本申请实施例提供的一种同步参考源的确定装置的结构示意图;
图12是本申请实施例提供的一种同步参考源的确定装置的结构示意图;
图13是本申请实施例提供的一种同步参考源的确定装置的结构示意图;
图14是本申请实施例提供的另一种同步参考源的确定装置的结构示意图;
图15是本申请实施例提供的一种芯片的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请实施例相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本申请实施例的一些方面相一致的装置和方法的例子。
在本申请实施例使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本申请实施例。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。还应当理解,本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解,尽管在本申请实施例可能采用术语第一、第二、第三等来描述各种信息,但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如,在不脱离本申请实施例范围的情况下,第一信息也可以被称为第二信息,类似地,第二信息也可以被称为第一信息。取决于语境,如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面详细描述本申请的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的要素。下面通过参考附图描述的实施例是示例性的,旨在用于解释本申请,而不能理解为对本申请的限制。
为了更好的理解本申请实施例公开的一种同步参考源的确定方法,下面首先对本申请实施例适用的通信系统进行描述。
请参见图1,图1为本申请实施例提供的一种通信系统的架构示意图。该通信系统可包括但不限于一个核心网设备,一个接入网设备和终端设备,图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定,实际应用中可以包括两个或两个以上的网络设备和两个或两个以上的终端设备。图1所示的通信系统以包括一个核心网设备101,一个接入网设备102和四个终端设备103-106为例。
需要说明的是,本申请实施例的技术方案可以应用于各种通信系统。例如:长期演进(Long Term Evolution,LTE)系统、第五代移动通信系统、5G新空口系统,或者其他未来的新型移动通信系统等。
本申请实施例中的接入网设备102是网络侧的一种用于发射或接收信号的实体。例如,接入网设备102和可以为演进型基站(Evolved NodeB,eNB)、传输点(Transmission Reception Point,TRP)、NR系统中的下一代基站(Next Generation NodeB,gNB)、其他未来移动通信系统中的基站或无线保真(Wireless Fidelity,WiFi)系统中的接入节点等。本申请的实施例对接入网设备所采用的具体技术 和具体设备形态不做限定。本申请实施例提供的接入网络设备可以是由集中单元(Central Unit,CU)与分布式单元(Distributed Unit,DU)组成的,其中,CU也可以称为控制单元(Control Unit),采用CU-DU的结构可以将接入网络设备,例如基站的协议层拆分开,部分协议层的功能放在CU集中控制,剩下部分或全部协议层的功能分布在DU中,由CU集中控制DU。
本申请实施例中的终端设备103-106是用户侧的一种用于接收或发射信号的实体,如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment,UE)、移动台(Mobile Station,MS)、移动终端设备(Mobile Terminal,MT)等。终端设备可以是具备通信功能的汽车、智能汽车、手机(Mobile Phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(Industrial Control)中的无线终端设备、无人驾驶(Self-Driving)中的无线终端设备、远程手术(Remote Medical Surgery)中的无线终端设备、智能电网(Smart Grid)中的无线终端设备、运输安全(Transportation Safety)中的无线终端设备、智慧城市(Smart City)中的无线终端设备、智慧家庭(Smart Home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
基于终端设备和终端设备之间的侧行链路(sidelink)的定位包括绝对定位,相对定位,以及测距。绝对定位是确定终端设备的绝对坐标,相对定位则是确定终端设备相对一个参考点的坐标,测距则是确定终端设备相对一个参考点的距离和/或角度。
通常,绝对定位和相对定位可能会涉及多个辅助终端设备来参与定位。
常用的定位方法有下行链路到达时间差(Downlink Time Difference of Arrival,DL-TDOA),上行链路到达时间差(Uplink Time Difference of Arrival,UL-TDOA),多小区往返时间(multiple cell-Round Trip Time,multiple RTT),到达角/出发角(Angle of Arrival/Angle of Departure,AOA/AOD),载波相位定位等等。
图1中以DL-TDOA的定位方法为例,终端设备103能够接收多个终端设备(图中的终端设备104-106)通过侧行链路(sidelink,SL)发送的定位参考信号(Positioning Reference Signal,PRS),终端设备103可以通过测量该多个SL PRS来确定其自身相对于该终端设备104-106的具体位置。如果定位结果没有基于定位辅助终端设备的GPS等绝对位置信息转换成绝对位置坐标,那么定位结果就是相对定位结果。反之,就是绝对定位。参与到相对定位/绝对定位的终端设备就是定位辅助终端设备。
定位辅助终端设备,存在不同的类型,比如路侧单元(Road Side Unit,RSU)类型的定位辅助终端设备,它属于一种基础设施,它可以通过与其它RSU一起协作提供定位服务;比如普通的终端设备也可以作为定位辅助终端设备,但是其就难以与其它终端设备一起协助提供定位服务;另外,有些定位辅助终端设备有GPS等位置信息,其可以辅助其它终端设备进行绝对定位;其它一些定位辅助终端设备可能不具备GPS等位置信息,无法辅助被定位的终端设备进行绝对定位。
相关技术中,当采用需要多个定位辅助终端设备协助的定位方法时,比如TDOA,AOA/AOD等定位方法,PRS从多个定位辅助终端设备发送给被定位的终端设备。然而,多个定位辅助终端设备的时钟的同步源可能不同。这就导致难以确定各个定位辅助终端设备之间的时钟源偏差。
可以理解的是,本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着系统架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
下面结合附图对本申请所提供的同步参考源的确定方法及其装置进行详细地介绍。
请参见图2,图2是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由第一终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图2所示,该方法可以包括如下步骤:
步骤201,接收与同步参考源相关的第一信息。
在本申请实施例中,第一终端设备能够接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,并能够根据第一信息确定用于侧行链路定位的目标同步参考源。
在本申请各实施例中,第一终端设备和第二终端设备均为侧行链路终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。也就是,在本申请各实施例中,第一终端设备可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种,第二终端设备也可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种。
其中,需要说明的是,在本申请各实施例中,定位辅助终端设备是指参与被定位的终端设备的SL定位的辅助终端设备。主定位辅助终端设备是指,多个定位辅助终端设备协助进行定位时,多个定位辅助终端设备之间确定出的,与被定位的终端设备、网络设备(包括接入网设备以及核心网设备)以及其他定位辅助终端设备进行通信的定位辅助终端设备。也就是,如果多个定位辅助终端设备中存在一个主定位辅助终端设备,则由该主定位辅助终端设备与被定位的终端设备进行交互,以及由该主定位辅助终端设备与网络设备(包括接入网设备以及核心网设备)进行交互。该主定位辅助终端设备也可以与其他定位辅助终端设备进行交互。
在本申请各实施例中,核心网设备可以为定位管理功能LMF(Location Management Function)。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在本申请实施例中,第一信息可以是由第二终端设备,接入网设备和核心网设备中的至少一个发送的。
也就是,作为一种可能的实现,第一终端设备接收第二终端设备发送的第一信息。
作为另一种可能的实现,第一终端设备接收接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收接入网设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备,接入网设备和核心网设备发送的第一信息。
在一些实施方式中,第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息可以为以下至少一种:全球导航卫星系统(Global Navigation Satellite System,GNSS)优先;接入网设备优先;侧行链路终端设备优先。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源。
可选地,第一信息用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识(Sidelink Synchronizing Sequence Identity,SL SSID);
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块(Sidelink Synchronization Signal and PBCH Block,SL SSB)时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
其中,终端设备的覆盖指示用于指示该终端设备是否接入服务小区,是否在覆盖内(in coverage)。
可选地,SL SSB时域分配信息可以包括以下至少一种:SL SSB的发送周期,SL SSB发送时间偏移,一个周期内发送的SSB个数等。
可选地,可以采用参数sl-SSB-TimeAllocation指示该SL SSB时域分配信息。该参数定义可以参考3GPP技术规范TS38.331。
可选地,接入网设备标识可以包括,接入网设备所在小区的物理小区标识(Physical Cell Identifier,PCI)和全球小区标识(Global Cell Identity,GCI)中的至少一种。
可选地,第一信息可以指示一个或多个候选同步参考源,如果第一信息指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源。
其中,可选地,该优先级信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备优先。该第一指示信息可以用于指示以下至少一种信息:
作为候选同步参考源的终端设备的SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的参考信号接收功率(Reference Signal Receiving Power,RSRP)绝对门限值;目标同步参考源的参考信号接收功率RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为物理侧行链路广播信道(Physical Sidelink Broadcast Channel,PSBCH)RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,由第二终端设备发送的该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;侧行链路无线资源控制(Radio Resource Control,RRC)消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP(LTE Positioning Protocol,LTE定位协议)消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在一些实施方式中,由接入网设备发送的该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放(release)消息。
在一些实施方式中,由核心网设备通过接入网设备发送的该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
步骤202,根据该第一信息,确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请实施例中,第一终端设备能够基于接收到的第一信息,确定自身用于SL定位的目标同步参考源。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
可以理解,如果该目标同步参考源为SL定位专用的同步参考源,第一终端设备根据第一信息确定用于定位的该目标同步参考源,SL通信的同步参考源仍按照SL通信的同步参考源的相关信息确定。如果该目标同步参考源为SL定位和SL通信共用,则确定的目标同步参考源可以同时用于SL定位和SL通信。
在一些实施方式中,该第一信息为GNSS优先,确定GNSS作为第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取到GNSS作为目标同步参考源,则确定侧行链路终端设备作为第一终端设备的目标同步参考源。
示例性地,GNSS优先时,各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为侧行链路终端设备优先,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
该SL终端设备包括:主定位辅助终端设备,定位辅助终端设备和被定位的终端设备中的一种或多种。
示例性地,SL终端设备优先时,各同步参考源类型优先级从高至低可以如下所示:
侧行链路终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为接入网设备优先,确定接入网设备作为第一终端设备的目标同步参考源。
示例性地,接入网设备优先时,各同步参考源类型优先级从高至低可以如下所示:
接入网设备(gNB/eNB)、侧行链路终端设备、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源,第一终端设备能够从该至少一个候选同步参考源中确定出目标同步参考源。
可选地,第一信息用于指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源,第一终端设备能够从该第一指示信息指示的至少一个候选同步参考源中,确定目标同步参考源。
可选地,第一终端设备如果无法获取第一指示信息指示的至少一个候选同步参考源,则根据该优先级信息,确定第一终端设备的目标同步参考源。
可选地,第一终端设备如果无法获取第一指示信息指示的至少一个候选同步参考源,第一终端设备还可以向第二终端设备,接入网设备和核心网设备中的至少一个发送反馈信息,其中,该反馈信息用于指示第一终端设备无法与指示的目标同步参考源同步。
可以理解的是,无法获取第一指示信息指示的至少一个候选同步参考源,是指第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源中的任一个。
在一些实施方式中,如果第一终端设备接收到广播消息和第一终端设备专用消息,且该广播消息和该第一终端设备专用消息中都包括第一信息,第一终端设备可以优先根据第一终端设备专用消息中的第一信息,确定第一终端设备的目标同步参考源。
可选地,广播消息包括接入网设备发送的广播消息,以及第二终端设备发送的SL广播消息。第一终端设备专用消息包括接入网设备发送的专用消息,以及第二终端设备发送的SL第一终端设备专用消息。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据第二终端设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据接入网设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备,接入网设备以及核心网设备中的多个发送的第一信息,第一终端设备可以按照协议的规定或者其他信息的指示,优先选择基于第二终端设备或者接入网设备或者核心网设备发送的第一信息,确定第一终端设备的目标同步参考源。
综上,通过接收与同步参考源相关的第一信息,根据该第一信息,确定该第一终端设备的目标同步参考源,其中,该目标同步参考源用于侧行链路sidelink的定位,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图3,图3是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由第一终端设备执行。该方法可以独立执行,也可以结合 本申请任意一个其他实施例一起被执行。如图3所示,该方法可以包括如下步骤:
步骤301,接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息用于确定至少一个同步参考源类型的优先级。
其中,可选地,该第一信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备优先。
在本申请各实施例中,第一终端设备和第二终端设备均为SL终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
在本申请各实施例中,核心网设备可以为定位管理功能LMF。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在本申请实施例中,第一信息可以是由第二终端设备,接入网设备和核心网设备中的至少一个发送的。
也就是,作为一种可能的实现,第一终端设备接收第二终端设备发送的第一信息。
作为另一种可能的实现,第一终端设备接收接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收接入网设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备,接入网设备和核心网设备发送的第一信息。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的RSRP绝对门限值;目标同步参考源的RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,由第二终端设备发送的该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;SL RRC消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在一些实施方式中,由接入网设备发送的该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
在一些实施方式中,由核心网设备发送的该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
步骤302,根据该第一信息,确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
在一些实施方式中,该第一信息为GNSS优先,确定GNSS作为第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取到GNSS作为目标同步参考源,则确定侧行链路终端设备作为第一终端设备的目标同步参考源。
示例性地,GNSS优先时,各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为侧行链路终端设备优先,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
该SL终端设备包括:主定位辅助终端设备,定位辅助终端设备和被定位的终端设备中的一种或多种。
示例性地,SL终端设备优先时,各同步参考源类型优先级从高至低可以如下所示:
侧行链路终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为接入网设备优先,确定接入网设备作为第一终端设备的目标同步参考源。
示例性地,接入网设备优先时,各同步参考源类型优先级从高至低可以如下所示:
接入网设备(gNB/eNB)、侧行链路终端设备、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其 中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,如果第一终端设备接收到广播消息和第一终端设备专用消息,且该广播消息和该第一终端设备专用消息中都包括第一信息,第一终端设备可以优先根据第一终端设备专用消息中的第一信息,确定第一终端设备的目标同步参考源。
可选地,广播消息包括接入网设备发送的广播消息,以及第二终端设备发送的SL广播消息。第一终端设备专用消息包括接入网设备发送的专用消息,以及第二终端设备发送的SL第一终端设备专用消息。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据第二终端设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据接入网设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备,接入网设备以及核心网设备中的多个发送的第一信息,第一终端设备可以按照协议的规定或者其他信息的指示,优先选择基于第二终端设备或者接入网设备或者核心网设备发送的第一信息,确定第一终端设备的目标同步参考源。
综上,通过接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息用于确定至少一个同步参考源类型的优先级,根据该第一信息,确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图4,图4是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图4所示,该方法可以包括如下步骤:
步骤401,接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息为全球导航卫星系统GNSS优先。
在本申请实施例中,示例性地,第一信息为GNSS优先时,用于确定的各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在本申请各实施例中,第一终端设备和第二终端设备均为SL终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
在本申请各实施例中,核心网设备可以为定位管理功能LMF。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在本申请实施例中,第一信息可以是由第二终端设备,接入网设备和核心网设备中的至少一个发送的。
也就是,作为一种可能的实现,第一终端设备接收第二终端设备发送的第一信息。
作为另一种可能的实现,第一终端设备接收接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收接入网设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备,接入网设备和核心网设备发送的第一信息。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的RSRP绝对门限值;目标同步参考源的RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,由第二终端设备发送的该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;SL RRC消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在一些实施方式中,由接入网设备发送的该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
在一些实施方式中,由核心网设备发送的该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
步骤402,确定GNSS作为第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
步骤403,响应于无法获取GNSS作为该目标同步参考源,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
在本申请实施例中,第一终端设备如果无法获取GNSS作为该目标同步参考源,可以确定SL终 端设备作为自己的目标同步参考源。
可选地,进一步地,第一终端设备如果无法获取SL终端设备作为目标同步参考源,可以按照如步骤401中示例性示出的顺序确定目标同步参考源。
综上,通过接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息为全球导航卫星系统GNSS优先,确定GNSS作为第一终端设备的目标同步参考源,响应于无法获取GNSS作为该目标同步参考源,确定侧行链路终端设备作为第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图5,图5是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图5所示,该方法可以包括如下步骤:
步骤501,接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息用于指示至少一个候选同步参考源。
其中,可选地,第一信息用于指示以下至少一种信息:
作为候选同步参考源的终端设备的SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
可选地,第一信息可以指示一个或多个候选同步参考源,如果第一信息指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级。
在本申请各实施例中,第一终端设备和第二终端设备均为SL终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
在本申请各实施例中,核心网设备可以为定位管理功能LMF。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在本申请实施例中,第一信息可以是由第二终端设备,接入网设备和核心网设备中的至少一个发送的。
也就是,作为一种可能的实现,第一终端设备接收第二终端设备发送的第一信息。
作为另一种可能的实现,第一终端设备接收接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收接入网设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备,接入网设备和核心网设备发送的第一信息。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结 束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的RSRP绝对门限值;目标同步参考源的RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,由第二终端设备发送的该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;SL RRC消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在一些实施方式中,由接入网设备发送的该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
在一些实施方式中,由核心网设备发送的该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
步骤502,从该至少一个候选同步参考源中,确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请实施例中,第一终端设备能够基于接收到的第一信息,从第一信息指示的至少一个候选同步参考源中,确定自身用于SL定位的目标同步参考源。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
可选地,第一信息用于指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
在一些实施方式中,如果第一终端设备接收到广播消息和第一终端设备专用消息,且该广播消息和该第一终端设备专用消息中都包括第一信息,第一终端设备可以优先根据第一终端设备专用消息中的第一信息,确定第一终端设备的目标同步参考源。
可选地,广播消息包括接入网设备发送的广播消息,以及第二终端设备发送的SL广播消息。第一终端设备专用消息包括接入网设备发送的专用消息,以及第二终端设备发送的SL第一终端设备专用消息。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据第二终端设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备和接入网设备发送的第一信息,第一终端设备可以优先根据接入网设备发送的第一信息,确定第一终端设备的目标同步参考源。
在一些实施方式中,如果第一终端设备接收到第二终端设备,接入网设备以及核心网设备中的多个发送的第一信息,第一终端设备可以按照协议的规定或者其他信息的指示,优先选择根据第二终端设备或者接入网设备或者核心网设备发送的第一信息,确定第一终端设备的目标同步参考源。
综上,通过接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息用于指示至少一个候选同步参考源,从该至少一个候选同步参考源中,确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图6,图6是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图6所示,该方法可以包括如下步骤:
步骤601,接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息包括优先级信息和第一指示信息。
其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源。
其中,可选地,该优先级信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备优先。该第一指示信息可以用于指示以下至少一种信息:
作为候选同步参考源的终端设备的SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
可选地,第一指示信息可以指示一个或多个候选同步参考源,如果第一指示信息指示多个候选同步参考源,该第一指示信息中还包括该多个候选同步参考源的优先级。
在本申请各实施例中,第一终端设备和第二终端设备均为SL终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
在本申请各实施例中,核心网设备可以为定位管理功能LMF。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在本申请实施例中,第一信息可以是由第二终端设备,接入网设备和核心网设备中的至少一个发送的。
也就是,作为一种可能的实现,第一终端设备接收第二终端设备发送的第一信息。
作为另一种可能的实现,第一终端设备接收接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和接入网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收接入网设备和核心网设备发送的第一信息。
作为又一种可能的实现,第一终端设备接收第二终端设备,接入网设备和核心网设备发送的第一信息。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的RSRP绝对门限值;目标同步参考源的RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,由第二终端设备发送的该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;SL RRC消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在一些实施方式中,由接入网设备发送的该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
在一些实施方式中,由核心网设备发送的该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
步骤602,从该第一指示信息指示的至少一个候选同步参考源中,确定第一终端设备的目标同步参考源。
在本申请实施例中,在接收到的第一信息中包括优先级信息和第一指示信息时,第一终端设备优先从第一指示信息指示的至少一个候选同步参考源中,确定第一终端设备的目标同步参考源。
可选地,第一指示信息用于指示多个候选同步参考源,该第一指示信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
步骤603,响应于无法获取第一指示信息指示的至少一个候选同步参考源,根据该优先级信息,确定第一终端设备的目标同步参考源。
在本申请实施例中,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源中的任一个,则根据第一信息中的优先级信息,确定第一终端设备的目标同步参考源。
可选地,第一终端设备能够按照该优先级信息确定的各同步参考源类型的优先级,确定第一终端设备的目标同步参考源。
可以理解,根据该优先级信息确定目标同步参考源的过程,可以如本申请各个实施例中所述,在此不再赘述。
在一些实施方式中,第一终端设备如果无法获取第一指示信息指示的至少一个候选同步参考源,第一终端设备还可以向第二终端设备,接入网设备和核心网设备中的至少一个发送反馈信息,其中,该反馈信息用于指示第一终端设备无法与指示的目标同步参考源同步。
综上,通过接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,该第一信息包括优先级信息和第一指示信息,从该第一指示信息指示的至少一个候选同步参考源中,确定第一终端设备的目标同步参考源,响应于无法获取第一指示信息指示的至少一个候选同步参考源,根据该优先级信息,确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图7,图7是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由第二终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图7所示,该方法可以包括如下步骤:
步骤701,向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请各实施例中,第一终端设备和第二终端设备均为侧行链路终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。也就是,在本申请各实施例中,第一终端设备可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种,第二终端设备也可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种。
其中,需要说明的是,在本申请各实施例中,定位辅助终端设备是指参与被定位的终端设备的SL定位的辅助终端设备。主定位辅助终端设备是指,多个定位辅助终端设备协助进行定位时,多个定位辅助终端设备之间确定出的,与被定位的终端设备、网络设备(包括接入网设备以及核心网设备)以及其他定位辅助终端设备进行通信的定位辅助终端设备。也就是,如果多个定位辅助终端设备中存在一个主定位辅助终端设备,则由该主定位辅助终端设备与被定位的终端设备进行交互,以及由该主定位辅助终端设备与网络设备(包括接入网设备以及核心网设备)进行交互。该主定位辅助终端设备也可以与其他定位辅助终端设备进行交互。
在一些实施方式中,第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息可以为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源。
可选地,第一信息用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
可选地,第一信息可以指示一个或多个候选同步参考源,如果第一信息指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源。
其中,可选地,该优先级信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备优先。该第一指示信息可以用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的参考信号接收功率RSRP绝对门限值;目标同步参考源的参考信号接收功率RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为物理侧行链路广播信道PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,该第一信息可以包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;侧行链路无线资源控制RRC消息。
可选地,该侧行链路定位协议消息可以为sidelink LPP消息,比如Sidelink LPP的请求辅助信息、提供辅助信息,也可以为其他侧行链路定位协议消息。
可选地,该SL RRC消息可以为SL广播消息或SL专用RRC消息,比如SL RRC重配消息,SL UE辅助消息等等。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
可以理解,如果该目标同步参考源为SL定位专用的同步参考源,第一终端设备根据第一信息确定用于定位的该目标同步参考源,SL通信的同步参考源仍按照SL通信的同步参考源的相关信息确定。如果该目标同步参考源为SL定位和SL通信共用,则确定的目标同步参考源可以同时用于SL定位和SL通信。
在一些实施方式中,该第一信息为GNSS优先,确定GNSS作为第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取到GNSS作为目标同步参考源,则确定侧行链路终端设备作为第一终端设备的目标同步参考源。
示例性地,GNSS优先时,各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为侧行链路终端设备优先,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
该SL终端设备包括:主定位辅助终端设备,定位辅助终端设备和被定位的终端设备中的一种或多种。
示例性地,SL终端设备优先时,各同步参考源类型优先级从高至低可以如下所示:
侧行链路终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为接入网设备优先,确定接入网设备作为第一终端设备的目标同步参考源。
示例性地,接入网设备优先时,各同步参考源类型优先级从高至低可以如下所示:
接入网设备(gNB/eNB)、侧行链路终端设备、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源,第一终端设备能够从该至少一个候选同步参考源中确定出目标同步参考源。
可选地,第一信息用于指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源,第一终端设备能够从该第一指示信息指示的至少一个候选同步参考源中,确定目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,则第一终端设备会根据该优先级信息,确定第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,第二终端设备还可以接收第一终端设备发送的反馈信息,其中,该反馈信息用于指示该第一终端设备无法与指示 的目标同步参考源同步。
可以理解的是,无法获取第一指示信息指示的至少一个候选同步参考源,是指第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源中的任一个。
综上,通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图8,图8是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由接入网设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图8所示,该方法可以包括如下步骤:
步骤801,向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请各实施例中,第一终端设备为侧行链路终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。也就是,在本申请各实施例中,第一终端设备可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种。
其中,需要说明的是,在本申请各实施例中,定位辅助终端设备是指参与被定位的终端设备的SL定位的辅助终端设备。主定位辅助终端设备是指,多个定位辅助终端设备协助进行定位时,多个定位辅助终端设备之间确定出的,与被定位的终端设备、网络设备(包括接入网设备以及核心网设备)以及其他定位辅助终端设备进行通信的定位辅助终端设备。也就是,如果多个定位辅助终端设备中存在一个主定位辅助终端设备,则由该主定位辅助终端设备与被定位的终端设备进行交互,以及由该主定位辅助终端设备与网络设备(包括接入网设备以及核心网设备)进行交互。该主定位辅助终端设备也可以与其他定位辅助终端设备进行交互。
在一些实施方式中,接入网设备能够接收核心网设备发送的第一信息,并将该第一信息透传给第一终端设备。
可选地,该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP请求辅助信息和/或提供辅助信息。
在一些实施方式中,第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息可以为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源。
可选地,第一信息用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
可选地,第一信息可以指示一个或多个候选同步参考源,如果第一信息指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源。
其中,可选地,该优先级信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备 优先。该第一指示信息可以用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的参考信号接收功率RSRP绝对门限值;目标同步参考源的参考信号接收功率RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为物理侧行链路广播信道PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,该第一信息可以包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放(release)消息。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
可以理解,如果该目标同步参考源为SL定位专用的同步参考源,第一终端设备根据第一信息确定用于定位的该目标同步参考源,SL通信的同步参考源仍按照SL通信的同步参考源的相关信息确定。如果该目标同步参考源为SL定位和SL通信共用,则确定的目标同步参考源可以同时用于SL定位和SL通信。
在一些实施方式中,该第一信息为GNSS优先,确定GNSS作为第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取到GNSS作为目标同步参考源,则确定侧行链路终端设备作为第一终端设备的目标同步参考源。
示例性地,GNSS优先时,各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接 入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为侧行链路终端设备优先,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
该SL终端设备包括:主定位辅助终端设备,定位辅助终端设备和被定位的终端设备中的一种或多种。
示例性地,SL终端设备优先时,各同步参考源类型优先级从高至低可以如下所示:
侧行链路终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为接入网设备优先,确定接入网设备作为第一终端设备的目标同步参考源。
示例性地,接入网设备优先时,各同步参考源类型优先级从高至低可以如下所示:
接入网设备(gNB/eNB)、侧行链路终端设备、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源,第一终端设备能够从该至少一个候选同步参考源中确定出目标同步参考源。
可选地,第一信息用于指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源,第一终端设备能够从该第一指示信息指示的至少一个候选同步参考源中,确定目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,则第一终端设备会根据该优先级信息,确定第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,第二终端设备还可以接收第一终端设备发送的反馈信息,其中,该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可以理解的是,无法获取第一指示信息指示的至少一个候选同步参考源,是指第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源中的任一个。
综上,通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位 辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图9,图9是本申请实施例提供的一种同步参考源的确定方法的流程示意图。需要说明的是,本申请实施例的同步参考源的确定方法由第二终端设备执行。该方法可以独立执行,也可以结合本申请任意一个其他实施例一起被执行。如图9所示,该方法可以包括如下步骤:
步骤901,向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源。
其中,该目标同步参考源用于侧行链路sidelink的定位。
在本申请各实施例中,第一终端设备为侧行链路终端设备,其中,SL终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。也就是,在本申请各实施例中,第一终端设备可以为主定位辅助终端设备,定位辅助终端设备,被定位的终端设备中的任一种。
其中,需要说明的是,在本申请各实施例中,定位辅助终端设备是指参与被定位的终端设备的SL定位的辅助终端设备。主定位辅助终端设备是指,多个定位辅助终端设备协助进行定位时,多个定位辅助终端设备之间确定出的,与被定位的终端设备、网络设备(包括接入网设备以及核心网设备)以及其他定位辅助终端设备进行通信的定位辅助终端设备。也就是,如果多个定位辅助终端设备中存在一个主定位辅助终端设备,则由该主定位辅助终端设备与被定位的终端设备进行交互,以及由该主定位辅助终端设备与网络设备(包括接入网设备以及核心网设备)进行交互。该主定位辅助终端设备也可以与其他定位辅助终端设备进行交互。
在本申请各实施例中,核心网设备可以为定位管理功能LMF。
可以理解的是,在本申请各实施例中,第一终端设备与核心网设备之间的信息交互是通过接入网的透传完成的。也就是,第一终端设备通过接入网设备接收核心网设备发送的信息,第一终端设备通过接入网设备向核心网设备发送信息等。
在一些实施方式中,第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息可以为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源。
可选地,第一信息用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
可选地,第一信息可以指示一个或多个候选同步参考源,如果第一信息指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源。
其中,可选地,该优先级信息可以为以下至少一种:GNSS优先;接入网设备优先;SL终端设备优先。该第一指示信息可以用于指示以下至少一种信息:
作为候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为候选同步参考源的终端设备的覆盖(in coverage)指示;
作为候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为候选同步参考源的终端设备的侧行链路层2标识;
作为候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
候选同步参考源的类型为GNSS;
候选同步参考源的类型为接入网设备;
作为候选同步参考源的接入网设备标识。
在一些实施方式中,第一信息还包括第二指示信息,其中,第二指示信息用于指示第一信息的生效时间。
可选地,第二指示信息可以用于指示该第一信息的生效时长,也可以用于指示该第一信息生效结束的时间,也可以用于示该第一信息生效开始的时间和生效结束的时间,还可以用于指示该第一信息生效开始的时间和生效时长等等。
可选地,如果该第二指示信息没有指示该第一信息的生效开始时间,该第一信息的生效开始时间可以为接收到该第一信息的时刻,也可以为接收到该第一信息的时刻之前或者之后的预设时间等等,其中该预设时间可以为协议规定的或者其他信息指示的。
在一些实施方式中,第一信息还包括以下至少一种信息:目标同步参考源的参考信号接收功率RSRP绝对门限值;目标同步参考源的参考信号接收功率RSRP相对门限值;目标同步参考源的层3滤波系数。
其中,RSRP绝对门限值或RSRP相对门限值,用于确定满足该RSRP绝对门限值或RSRP相对门限值要求的候选同步参考源作为目标同步参考源。
可以理解的是,其中的目标同步参考源为侧行链路终端设备。
需要说明的是,满足RSRP绝对门限值要求是指,该候选同步参考源的RSRP超过该RSRP绝对门限值。满足RSRP相对门限值要求是指,该候选同步参考源的RSRP与第一终端设备当前的同步参考源的RSRP相比,超过该RSRP相对门限值。
可选地,该RSRP可以为物理侧行链路广播信道PSBCH RSRP,也可以为SL PRS RSRP等等。
在一些实施方式中,该第一信息可以包括在LTE定位协议LPP消息中。
可选地,该LPP消息可以为LPP的请求辅助信息和/或提供辅助信息。
在本申请实施例中,该目标同步参考源用于SL定位是指,该目标同步参考源可以用于以下至少一种情况:
SL PRS的发送;SL PRS接收;SL定位相关的控制信令的发送和/或接收(比如SL定位协议消息,SL RRC定位相关系统消息或专用RRC消息等)。
在本申请各实施例中,可选地,该目标同步参考源可以为SL定位专用的同步参考源,或者,该目标同步参考源也可以为SL定位与SL通信共用的同步参考源。
可以理解,如果该目标同步参考源为SL定位专用的同步参考源,第一终端设备根据第一信息确定用于定位的该目标同步参考源,SL通信的同步参考源仍按照SL通信的同步参考源的相关信息确定。如果该目标同步参考源为SL定位和SL通信共用,则确定的目标同步参考源可以同时用于SL定位和SL通信。
在一些实施方式中,该第一信息为GNSS优先,确定GNSS作为第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取到GNSS作为目标同步参考源,则确定侧行链路终端设备作为第一终端设备的目标同步参考源。
示例性地,GNSS优先时,各同步参考源类型优先级从高至低可以如下所示:
GNSS、侧行链路终端设备、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
可以理解,上述各同步参考源类型优先级的顺序仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序, 也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为侧行链路终端设备优先,确定侧行链路终端设备作为第一终端设备的目标同步参考源。
该SL终端设备包括:主定位辅助终端设备,定位辅助终端设备和被定位的终端设备中的一种或多种。
示例性地,SL终端设备优先时,各同步参考源类型优先级从高至低可以如下所示:
侧行链路终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、接入网设备(gNB/eNB)、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,该第一信息为接入网设备优先,确定接入网设备作为第一终端设备的目标同步参考源。
示例性地,接入网设备优先时,各同步参考源类型优先级从高至低可以如下所示:
接入网设备(gNB/eNB)、侧行链路终端设备、直接同步到gNB/eNB的终端设备、间接同步到gNB/eNB的终端设备、GNSS、直接同步到GNSS的终端设备、间接同步到GNSS的终端设备、其余具有最低优先级的终端设备等。
第一终端设备可以按照如上所示的各同步参考源类型优先级的顺序,确定目标同步参考源。
同样可以理解的是,上述各同步参考源类型优先级的顺序也仅作为一种示例,也可以规定其他的优先级顺序,本申请对此不进行限定。第一终端设备按照该顺序确定目标同步参考源时,可以仅取其中的部分顺序,也可以跳过其中的部分顺序,本申请对此也不进行限定。
在一些实施方式中,第一信息用于指示至少一个候选同步参考源,第一终端设备能够从该至少一个候选同步参考源中确定出目标同步参考源。
可选地,第一信息用于指示多个候选同步参考源,该第一信息中还包括该多个候选同步参考源的优先级,第一终端设备可以基于该多个候选同步参考源的优先级,从中确定出目标同步参考源。
在一些实施方式中,第一信息包括优先级信息和第一指示信息,其中,优先级信息用于确定至少一个同步参考源类型的优先级,第一指示信息用于指示至少一个候选同步参考源,第一终端设备能够从该第一指示信息指示的至少一个候选同步参考源中,确定目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,则第一终端设备会根据该优先级信息,确定第一终端设备的目标同步参考源。
可选地,如果第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源,第二终端设备还可以接收第一终端设备发送的反馈信息,其中,该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可以理解的是,无法获取第一指示信息指示的至少一个候选同步参考源,是指第一终端设备无法获取第一指示信息指示的至少一个候选同步参考源中的任一个。
综上,通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
与上述几种实施例提供的同步参考源的确定方法相对应,本申请还提供一种同步参考源的确定装置,由于本申请实施例提供的同步参考源的确定装置与上述几种实施例提供的方法相对应,因此在同步参考源的确定方法的实施方式也适用于下述实施例提供的同步参考源的确定装置,在下述实施例中 不再详细描述。
请参见图10,图10为本申请实施例提供的一种同步参考源的确定装置的结构示意图。
如图10所示,该同步参考源的确定装置1000包括:收发单元1010和处理单元1020,其中:
收发单元1010,用于与同步参考源相关的第一信息;
处理单元1020,用于根据该第一信息,确定该第一终端设备的目标同步参考源;
其中,该目标同步参考源用于侧行链路sidelink的定位。
可选地,该第一信息是由第二终端设备和/或接入网设备发送的。
可选地,该目标同步参考源为侧行链路定位专用的同步参考源,或者,该目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
可选地,该第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
可选地,响应于该优先级信息为GNSS优先,该处理单元1020具体用于:确定GNSS作为该第一终端设备的目标同步参考源。
可选地,该处理单元1020还用于:响应于无法获取该GNSS作为该目标同步参考源,确定侧行链路终端设备作为该第一终端设备的目标同步参考源。
可选地,该第一信息用于指示至少一个候选同步参考源。
可选地,该第一信息用于指示以下至少一种信息:
作为该候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为该候选同步参考源的终端设备的覆盖指示;
作为该候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为该候选同步参考源的终端设备的侧行链路层2标识;
作为该候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
该候选同步参考源的类型为GNSS;
该候选同步参考源的类型为接入网设备;
作为该候选同步参考源的接入网设备标识。
可选地,响应于该第一信息用于指示多个候选同步参考源,该第一信息还包括该多个候选同步参考源的优先级。
可选地,响应于该第一信息包括优先级信息和第一指示信息,其中,该优先级信息用于确定至少一个同步参考源类型的优先级,该第一指示信息用于指示至少一个候选同步参考源;该处理单元1020具体用于:从该第一指示信息指示的至少一个候选同步参考源中,确定该第一终端设备的目标同步参考源。
可选地,响应于无法获取该第一指示信息指示的至少一个候选同步参考源,该处理单元1020具体用于:根据该优先级信息,确定该第一终端设备的目标同步参考源。
可选地,响应于无法获取该第一指示信息指示的至少一个候选同步参考源,该收发单元1010还用于:向该第二终端设备,该接入网设备和该核心网设备中的至少一个发送反馈信息;该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可选地,响应于该第一信息为该第二终端设备发送的,该第一信息包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;侧行链路无线资源控制RRC消息。
可选地,响应于该第一信息为核心网设备通过该接入网设备发送的,该第一信息包括在LTE定位协议LPP消息中。
可选地,响应于该第一信息为该接入网设备发送的,该第一信息包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
可选地,响应于接收到广播消息和第一终端设备专用消息,且该广播消息和该第一终端设备专用 消息中都包括该第一信息,该处理单元1020还用于:
根据该第一终端设备专用消息中的第一信息,确定该第一终端设备的目标同步参考源。
可选地,响应于接收到第二终端设备和接入网设备发送的第一信息,该处理单元1020还用于:根据该第二终端设备发送的第一信息,确定该第一终端设备的目标同步参考源。
可选地,该第一信息还包括第二指示信息,该第二指示信息用于指示该第一信息的生效时间。
可选地,该第一信息还包括以下至少一种信息:该目标同步参考源的参考信号接收功率RSRP绝对门限值;该目标同步参考源的参考信号接收功率RSRP相对门限值;该目标同步参考源的层3滤波系数;其中,该RSRP绝对门限值或该RSRP相对门限值,用于确定满足该RSRP绝对门限值或该RSRP相对门限值要求的候选同步参考源作为该目标同步参考源;该目标同步参考源为侧行链路终端设备。
可选地,该第一终端设备和第二终端设备为侧行链路终端设备,该侧行链路终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
本实施例的同步参考源的确定装置,可以通过接收第二终端设备,接入网设备和核心网设备中的至少一个发送的第一信息,根据该第一信息,确定该第一终端设备的目标同步参考源,其中,该目标同步参考源用于侧行链路sidelink的定位,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图11,图11为本申请实施例提供的一种同步参考源的确定装置的结构示意图。
如图11所示,该同步参考源的确定装置1100包括:收发单元1110,其中:
收发单元1110,用于向第一终端设备发送与同步参考源相关的第一信息;
该第一信息,用于确定该第一终端设备的目标同步参考源;
其中,该目标同步参考源用于侧行链路sidelink的定位。
可选地,该目标同步参考源为侧行链路定位专用的同步参考源,或者,该目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
可选地,该第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
可选地,响应于该优先级信息为GNSS优先,该第一信息用于确定GNSS作为该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该GNSS作为该目标同步参考源,该第一信息用于确定侧行链路终端设备作为该第一终端设备的目标同步参考源。
可选地,该第一信息用于指示至少一个候选同步参考源。
可选地,该第一信息用于指示以下至少一种信息:
作为该候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为该候选同步参考源的终端设备的覆盖指示;
作为该候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为该候选同步参考源的终端设备的侧行链路层2标识;
作为该候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
该候选同步参考源的类型为GNSS;
该候选同步参考源的类型为接入网设备;
作为该候选同步参考源的接入网设备标识。
可选地,响应于该第一信息用于指示多个候选同步参考源,该第一信息还包括该多个候选同步参考源的优先级。
可选地,响应于该第一信息包括优先级信息和第一指示信息,其中,该优先级信息用于确定至少一个同步参考源类型的优先级,该第一指示信息用于指示至少一个候选同步参考源;该第一指示信息用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该优先级信息用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该收发单元1110还用于:接收该第一终端设备发送的反馈信息;该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可选地,该第一信息包括在以下至少一种消息中:侧行链路定位协议消息;底层直连蜂窝通信协议PC5消息;侧行链路无线资源控制RRC消息。
可选地,该第一信息还包括第二指示信息,该第二指示信息用于指示该第一信息的生效时间。
可选地,该第一信息还包括以下至少一种信息:该目标同步参考源的参考信号接收功率RSRP绝对门限值;该目标同步参考源的参考信号接收功率RSRP相对门限值;该目标同步参考源的层3滤波系数;其中,该RSRP绝对门限值或该RSRP相对门限值,用于确定满足该RSRP绝对门限值或该RSRP相对门限值要求的候选同步参考源作为该目标同步参考源;该目标同步参考源为侧行链路终端设备。
可选地,该第一终端设备和第二终端设备为侧行链路终端设备,该侧行链路终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
本实施例的同步参考源的确定装置,可以通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图12,图12为本申请实施例提供的一种同步参考源的确定装置的结构示意图。
如图12所示,该同步参考源的确定装置1200包括:收发单元1210,其中:
收发单元1210,用于向第一终端设备发送与同步参考源相关的第一信息;
该第一信息,用于确定该第一终端设备的目标同步参考源;
其中,该目标同步参考源用于侧行链路sidelink的定位。
可选地,所述收发单元1210还用于:接收接入网设备发送的该第一信息。
可选地,该目标同步参考源为侧行链路定位专用的同步参考源,或者,该目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
可选地,该第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
可选地,响应于该优先级信息为GNSS优先,该第一信息用于确定GNSS作为该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该GNSS作为该目标同步参考源,该第一信息用于确定侧行链路终端设备作为该第一终端设备的目标同步参考源。
可选地,该第一信息用于指示至少一个候选同步参考源。
可选地,该第一信息用于指示以下至少一种信息:
作为该候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为该候选同步参考源的终端设备的覆盖指示;
作为该候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为该候选同步参考源的终端设备的侧行链路层2标识;
作为该候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
该候选同步参考源的类型为GNSS;
该候选同步参考源的类型为接入网设备;
作为该候选同步参考源的接入网设备标识。
可选地,响应于该第一信息用于指示多个候选同步参考源,该第一信息还包括该多个候选同步参考源的优先级。
可选地,响应于该第一信息包括优先级信息和第一指示信息,其中,该优先级信息用于确定至少一个同步参考源类型的优先级,该第一指示信息用于指示至少一个候选同步参考源;该第一指示信息用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该优先级信息,用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该收发单元1210还用于:接收该第一终端设备发送的反馈信息;该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可选地,该第一信息包括在以下至少一种消息中:系统广播消息;无线资源控制RRC重配消息;无线资源控制RRC连接释放消息。
可选地,该第一信息包括在LTE定位协议LPP消息中。
可选地,该第一信息还包括第二指示信息,该第二指示信息用于指示该第一信息的生效时间。
可选地,该第一信息还包括以下至少一种信息:该目标同步参考源的参考信号接收功率RSRP绝对门限值;该目标同步参考源的参考信号接收功率RSRP相对门限值;该目标同步参考源的层3滤波系数;其中,该RSRP绝对门限值或该RSRP相对门限值,用于确定满足该RSRP绝对门限值或该RSRP相对门限值要求的候选同步参考源作为该目标同步参考源;该目标同步参考源为侧行链路终端设备。
可选地,该第一终端设备为侧行链路终端设备,该侧行链路终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
本实施例的同步参考源的确定装置,可以通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
请参见图13,图13为本申请实施例提供的一种同步参考源的确定装置的结构示意图。
如图13所示,该同步参考源的确定装置1300包括:收发单元1310,其中:
收发单元1310,用于向第一终端设备发送第一信息;
该第一信息,用于确定该第一终端设备的目标同步参考源;
其中,该目标同步参考源用于侧行链路sidelink的定位。
可选地,该目标同步参考源为侧行链路定位专用的同步参考源,或者,该目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
可选地,该第一信息用于确定至少一个同步参考源类型的优先级。
可选地,该第一信息为以下至少一种:全球导航卫星系统GNSS优先;接入网设备优先;侧行链路终端设备优先。
可选地,响应于该优先级信息为GNSS优先,该第一信息用于确定GNSS作为该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该GNSS作为该目标同步参考源,该第一信息用于确定侧行链路终端设备作为该第一终端设备的目标同步参考源。
可选地,该第一信息用于指示至少一个候选同步参考源。
可选地,该第一信息用于指示以下至少一种信息:
作为该候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
作为该候选同步参考源的终端设备的覆盖指示;
作为该候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
作为该候选同步参考源的终端设备的侧行链路层2标识;
作为该候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
该候选同步参考源的类型为GNSS;
该候选同步参考源的类型为接入网设备;
作为该候选同步参考源的接入网设备标识。
可选地,响应于该第一信息用于指示多个候选同步参考源,该第一信息还包括该多个候选同步参考源的优先级。
可选地,响应于该第一信息包括优先级信息和第一指示信息,其中,该优先级信息用于确定至少一个同步参考源类型的优先级,该第一指示信息用于指示至少一个候选同步参考源;该第一指示信息用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该优先级信息,用于确定该第一终端设备的目标同步参考源。
可选地,响应于该第一终端设备无法获取该第一指示信息指示的至少一个候选同步参考源,该收发单元1310还用于:接收该第一终端设备发送的反馈信息;该反馈信息用于指示该第一终端设备无法与指示的目标同步参考源同步。
可选地,该第一信息包括在LTE定位协议LPP消息中。
可选地,该第一信息还包括第二指示信息,该第二指示信息用于指示该第一信息的生效时间。
可选地,该第一信息还包括以下至少一种信息:该目标同步参考源的参考信号接收功率RSRP绝对门限值;该目标同步参考源的参考信号接收功率RSRP相对门限值;该目标同步参考源的层3滤波系数;其中,该RSRP绝对门限值或该RSRP相对门限值,用于确定满足该RSRP绝对门限值或该RSRP相对门限值要求的候选同步参考源作为该目标同步参考源;该目标同步参考源为侧行链路终端设备。
可选地,该第一终端设备为侧行链路终端设备,该侧行链路终端设备包括以下至少一种:主定位辅助终端设备;定位辅助终端设备;被定位的终端设备。
本实施例的同步参考源的确定装置,可以通过向第一终端设备发送第一信息,该第一信息用于确定第一终端设备的目标同步参考源,使得参与侧行链路定位的各个终端设备能够基于相同的同步参考源进行时钟同步,尽量消除各个定位辅助终端设备之间的时钟源偏差,能够有效提高侧行链路定位结果的准确性以及精度,提升定位效率。
为了实现上述实施例,本申请实施例还提出一种通信装置,包括:处理器和存储器,存储器中存储有计算机程序,处理器执行所述存储器中存储的计算机程序,以使装置执行图2至图6实施例所示的方法,或者执行图7实施例所示的方法。
为了实现上述实施例,本申请实施例还提出一种通信装置,包括:处理器和存储器,存储器中存储有计算机程序,处理器执行所述存储器中存储的计算机程序,以使装置执行图8实施例所示的方法,或者执行图9实施例所示的方法。
为了实现上述实施例,本申请实施例还提出一种通信装置,包括:处理器和接口电路,接口电路,用于接收代码指令并传输至处理器,处理器,用于运行所述代码指令以执行图2至图6实施例所示的方法,或者执行图7实施例所示的方法。
为了实现上述实施例,本申请实施例还提出一种通信装置,包括:处理器和接口电路,接口电路, 用于接收代码指令并传输至处理器,处理器,用于运行所述代码指令以执行图8实施例所示的方法,或者执行图9实施例所示的方法。
请参见图14,图14是本申请实施例提供的另一种同步参考源的确定装置的结构示意图。同步参考源的确定装置1400可以是网络设备,也可以是终端设备,也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等,还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法,具体可以参见上述方法实施例中的说明。
同步参考源的确定装置1400可以包括一个或多个处理器1401。处理器1401可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理,中央处理器可以用于对同步参考源的确定装置(如,基站、基带芯片,终端设备、终端设备芯片,DU或CU等)进行控制,执行计算机程序,处理计算机程序的数据。
可选的,同步参考源的确定装置1400中还可以包括一个或多个存储器1402,其上可以存有计算机程序1403,处理器1401执行计算机程序1403,以使得同步参考源的确定装置1400执行上述方法实施例中描述的方法。计算机程序1403可能固化在处理器1401中,该种情况下,处理器1401可能由硬件实现。
可选的,存储器1402中还可以存储有数据。同步参考源的确定装置1400和存储器1402可以单独设置,也可以集成在一起。
可选的,同步参考源的确定装置1400还可以包括收发器1405、天线1406。收发器1405可以称为收发单元、收发机、或收发电路等,用于实现收发功能。收发器1405可以包括接收器和发送器,接收器可以称为接收机或接收电路等,用于实现接收功能;发送器可以称为发送机或发送电路等,用于实现发送功能。
可选的,同步参考源的确定装置1400中还可以包括一个或多个接口电路1407。接口电路1407用于接收代码指令并传输至处理器1401。处理器1401运行代码指令以使同步参考源的确定装置1400执行上述方法实施例中描述的方法。
在一种实现方式中,处理器1401中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路,或者是接口,或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的,也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写,或者,上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中,同步参考源的确定装置1400可以包括电路,电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit,IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit,ASIC)、印刷电路板(printed circuit board,PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造,例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor,NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(bipolar junction transistor,BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的同步参考源的确定装置可以是网络设备或者终端设备,但本申请中描述的同步参考源的确定装置的范围并不限于此,而且同步参考源的确定装置的结构可以不受图10-图13的限制。同步参考源的确定装置可以是独立的设备或者可以是较大设备的一部分。例如同步参考源的确定装置可以是:
(1)独立的集成电路IC,或芯片,或,芯片系统或子系统;
(2)具有一个或多个IC的集合,可选的,该IC集合也可以包括用于存储数据,计算机程序的存储部件;
(3)ASIC,例如调制解调器(Modem);
(4)可嵌入在其他设备内的模块;
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等;
(6)其他等等。
对于同步参考源的确定装置可以是芯片或芯片系统的情况,可参见图15所示的芯片的结构示意图。图15所示的芯片包括处理器1501和接口1502。其中,处理器1501的数量可以是一个或多个,接口1502的数量可以是多个。
对于芯片用于实现本申请实施例中终端设备的功能的情况:
接口1502,用于代码指令并传输至处理器;
处理器1501,用于运行代码指令以执行如图2至图6的方法,或者执行如图7的方法。
对于芯片用于实现本申请实施例中网络设备的功能的情况:
接口1502,用于代码指令并传输至处理器;
处理器1501,用于运行代码指令以执行如图8的方法,或者执行如图8的方法。
可选的,芯片还包括存储器1503,存储器1503用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件,或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用,可以使用各种方法实现的功能,但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种通信系统,该系统包括前述图10-图13实施例中作为终端设备的同步参考源的确定装置和作为网络设备的同步参考源的确定装置,或者,该系统包括前述图14实施例中作为终端设备的同步参考源的确定装置和作为网络设备的同步参考源的确定装置。
本申请还提供一种可读存储介质,其上存储有指令,该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品,该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行计算机程序时,全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机程序可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,高密度数字视频光盘(digital video disc,DVD))、或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。
本领域普通技术人员可以理解:本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分,并不用来限制本申请实施例的范围,也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个,多个可以是两个、三个、四个或者更多个,本申请不做限制。在本申请实施例中,对于一种技术特征,通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征,该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置,也可以是预定义的。各表中的信息的取值仅仅是举例,可以配置为其他值,本申请并不限定。在配置信息与各参数的对应关系时,并不一定要求必须配置各 表中示意出的所有对应关系。例如,本申请中的表格中,某些行示出的对应关系也可以不配置。又例如,可以基于上述表格做适当的变形调整,例如,拆分,合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称,其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时,也可以采用其他的数据结构,例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
应当理解,可以使用上面所示的各种形式的流程,重新排序、增加或删除步骤。例如,本申请实施例中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行,只要能够实现本发明公开的技术方案所期望的结果,本文在此不进行限制。
上述具体实施方式,并不构成对本发明保护范围的限制。本领域技术人员应该明白的是,根据设计要求和其他因素,可以进行各种修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等,均应包含在本发明保护范围之内。

Claims (77)

  1. 一种同步参考源的确定方法,其特征在于,所述方法由第一终端设备执行,所述方法包括:
    接收与同步参考源相关的第一信息;
    根据所述第一信息,确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  2. 根据权利要求1所述的方法,其特征在于,所述第一信息是通过以下中的至少一个发送的:
    第二终端设备;
    接入网设备
    核心网设备。
  3. 根据权利要求1所述的方法,其特征在于,
    所述目标同步参考源为侧行链路定位专用的同步参考源;或
    所述目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
  4. 根据权利要求2或3所述的方法,其特征在于,所述第一信息用于确定至少一个同步参考源类型的优先级。
  5. 根据权利要求4所述的方法,其特征在于,所述第一信息为以下至少一种:
    全球导航卫星系统GNSS优先;
    接入网设备优先;
    侧行链路终端设备优先。
  6. 根据权利要求5所述的方法,其特征在于,响应于所述优先级信息为GNSS优先,所述根据所述第一信息,确定所述第一终端设备的目标同步参考源,包括:
    确定GNSS作为所述第一终端设备的目标同步参考源。
  7. 根据权利要求6所述的方法,其特征在于,所述方法还包括:
    响应于无法获取所述GNSS作为所述目标同步参考源,确定侧行链路终端设备作为所述第一终端设备的目标同步参考源。
  8. 根据权利要求2或3所述的方法,其特征在于,所述第一信息用于指示至少一个候选同步参考源。
  9. 根据权利要求8所述的方法,其特征在于,所述第一信息用于指示以下至少一种信息:
    作为所述候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
    作为所述候选同步参考源的终端设备的覆盖指示;
    作为所述候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
    作为所述候选同步参考源的终端设备的侧行链路层2标识;
    作为所述候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
    所述候选同步参考源的类型为GNSS;
    所述候选同步参考源的类型为接入网设备;
    作为所述候选同步参考源的接入网设备标识。
  10. 根据权利要求8所述的方法,其特征在于,响应于所述第一信息用于指示多个候选同步参考源,所述第一信息还包括所述多个候选同步参考源的优先级。
  11. 根据权利要求4或8所述的方法,其特征在于,响应于所述第一信息包括优先级信息和第一指示信息,其中,所述优先级信息用于确定至少一个同步参考源类型的优先级,所述第一指示信息用于指示至少一个候选同步参考源;
    所述根据所述第一信息,确定所述第一终端设备的目标同步参考源,包括:
    从所述第一指示信息指示的至少一个候选同步参考源中,确定所述第一终端设备的目标同步参考源。
  12. 根据权利要求11所述的方法,其特征在于,响应于无法获取所述第一指示信息指示的至少一个候选同步参考源,所述根据所述第一信息,确定所述第一终端设备的目标同步参考源,包括:
    根据所述优先级信息,确定所述第一终端设备的目标同步参考源。
  13. 根据权利要求11所述的方法,其特征在于,响应于无法获取所述第一指示信息指示的至少一个候选同步参考源,所述方法还包括:
    向所述第二终端设备,所述接入网设备和所述核心网设备中的至少一个发送反馈信息;
    所述反馈信息用于指示所述第一终端设备无法与指示的目标同步参考源同步。
  14. 根据权利要求2-13任一项所述的方法,其特征在于,响应于所述第一信息为所述第二终端设备发送的,所述第一信息包括在以下至少一种消息中:
    侧行链路定位协议消息;
    底层直连蜂窝通信协议PC5消息;
    侧行链路无线资源控制RRC消息。
  15. 根据权利要求2-13任一项所述的方法,其特征在于,响应于所述第一信息为核心网设备通过所述接入网设备发送的,所述第一信息包括在LTE定位协议LPP消息中。
  16. 根据权利要求2-13任一项所述的方法,其特征在于,响应于所述第一信息为所述接入网设备发送的,所述第一信息包括在以下至少一种消息中:
    系统广播消息;
    无线资源控制RRC重配消息;
    无线资源控制RRC连接释放消息。
  17. 根据权利要求14或16所述的方法,其特征在于,响应于接收到广播消息和第一终端设备专用消息,且所述广播消息和所述第一终端设备专用消息中都包括所述第一信息,所述方法还包括:
    根据所述第一终端设备专用消息中的第一信息,确定所述第一终端设备的目标同步参考源。
  18. 根据权利要求14或16所述的方法,其特征在于,响应于接收到第二终端设备和接入网设备发送的第一信息,所述方法还包括:
    根据所述第二终端设备发送的第一信息,确定所述第一终端设备的目标同步参考源。
  19. 根据权利要求2-18任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示所述第一信息的生效时间。
  20. 根据权利要求2-18任一项所述的方法,其特征在于,所述第一信息还包括以下至少一种信息:
    所述目标同步参考源的参考信号接收功率RSRP绝对门限值;
    所述目标同步参考源的参考信号接收功率RSRP相对门限值;
    所述目标同步参考源的层3滤波系数;
    其中,所述RSRP绝对门限值或所述RSRP相对门限值,用于确定满足所述RSRP绝对门限值或所述RSRP相对门限值要求的候选同步参考源作为所述目标同步参考源;
    所述目标同步参考源为侧行链路终端设备。
  21. 根据权利要求2-20任一项所述的方法,其特征在于,所述第一终端设备和第二终端设备为侧行链路终端设备,所述侧行链路终端设备包括以下至少一种:
    主定位辅助终端设备;
    定位辅助终端设备;
    被定位的终端设备。
  22. 一种同步参考源的确定方法,其特征在于,所述方法由第二终端设备执行,所述方法包括:
    向第一终端设备发送与同步参考源相关的第一信息;所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  23. 根据权利要求22所述的方法,其特征在于,
    所述目标同步参考源为侧行链路定位专用的同步参考源;或
    所述目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
  24. 根据权利要求22或23所述的方法,其特征在于,所述第一信息用于确定至少一个同步参考源类型的优先级。
  25. 根据权利要求24所述的方法,其特征在于,所述第一信息为以下至少一种:
    全球导航卫星系统GNSS优先;
    接入网设备优先;
    侧行链路终端设备优先。
  26. 根据权利要求25所述的方法,其特征在于,响应于所述优先级信息为GNSS优先,所述第一信息用于确定GNSS作为所述第一终端设备的目标同步参考源。
  27. 根据权利要求26所述的方法,其特征在于,响应于所述第一终端设备无法获取所述GNSS作为所述目标同步参考源,所述第一信息用于确定侧行链路终端设备作为所述第一终端设备的目标同步参考源。
  28. 根据权利要求22或23所述的方法,其特征在于,所述第一信息用于指示至少一个候选同步参考源。
  29. 根据权利要求28所述的方法,其特征在于,所述第一信息用于指示以下至少一种信息:
    作为所述候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
    作为所述候选同步参考源的终端设备的覆盖指示;
    作为所述候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
    作为所述候选同步参考源的终端设备的侧行链路层2标识;
    作为所述候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
    所述候选同步参考源的类型为GNSS;
    所述候选同步参考源的类型为接入网设备;
    作为所述候选同步参考源的接入网设备标识。
  30. 根据权利要求28所述的方法,其特征在于,响应于所述第一信息用于指示多个候选同步参考源,所述第一信息还包括所述多个候选同步参考源的优先级。
  31. 根据权利要求24或28所述的方法,其特征在于,响应于所述第一信息包括优先级信息和第一指示信息,其中,所述优先级信息用于确定至少一个同步参考源类型的优先级,所述第一指示信息用于指示至少一个候选同步参考源;
    所述第一指示信息用于确定所述第一终端设备的目标同步参考源。
  32. 根据权利要求31所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述优先级信息用于确定所述第一终端设备的目标同步参考源。
  33. 根据权利要求31所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述方法还包括:
    接收所述第一终端设备发送的反馈信息;
    所述反馈信息用于指示所述第一终端设备无法与指示的目标同步参考源同步。
  34. 根据权利要求22-33任一项所述的方法,其特征在于,所述第一信息包括在以下至少一种消息中:
    侧行链路定位协议消息;
    底层直连蜂窝通信协议PC5消息;
    侧行链路无线资源控制RRC消息。
  35. 根据权利要求22-34任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示所述第一信息的生效时间。
  36. 根据权利要求22-34任一项所述的方法,其特征在于,所述第一信息还包括以下至少一种信息:
    所述目标同步参考源的参考信号接收功率RSRP绝对门限值;
    所述目标同步参考源的参考信号接收功率RSRP相对门限值;
    所述目标同步参考源的层3滤波系数;
    其中,所述RSRP绝对门限值或所述RSRP相对门限值,用于确定满足所述RSRP绝对门限值或所述RSRP相对门限值要求的候选同步参考源作为所述目标同步参考源;
    所述目标同步参考源为侧行链路终端设备。
  37. 根据权利要求22-36任一项所述的方法,其特征在于,所述第一终端设备和第二终端设备为侧行链路终端设备,所述侧行链路终端设备包括以下至少一种:
    主定位辅助终端设备;
    定位辅助终端设备;
    被定位的终端设备。
  38. 一种同步参考源的确定方法,其特征在于,所述方法由接入网设备执行,所述方法包括:
    向第一终端设备发送与同步参考源相关的第一信息;
    所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  39. 根据权利要求38所述的方法,其特征在于,所述方法还包括:
    接收核心网设备发送的所述第一信息。
  40. 根据权利要求38或39所述的方法,其特征在于,
    所述目标同步参考源为侧行链路定位专用的同步参考源;或
    所述目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
  41. 根据权利要求38-40任一项所述的方法,其特征在于,所述第一信息用于确定至少一个同步参考源类型的优先级。
  42. 根据权利要求41所述的方法,其特征在于,所述第一信息为以下至少一种:
    全球导航卫星系统GNSS优先;
    接入网设备优先;
    侧行链路终端设备优先。
  43. 根据权利要求42所述的方法,其特征在于,响应于所述优先级信息为GNSS优先,所述第一信息用于确定GNSS作为所述第一终端设备的目标同步参考源。
  44. 根据权利要求43所述的方法,其特征在于,响应于所述第一终端设备无法获取所述GNSS作为所述目标同步参考源,所述第一信息用于确定侧行链路终端设备作为所述第一终端设备的目标同步参考源。
  45. 根据权利要求38-40任一项所述的方法,其特征在于,所述第一信息用于指示至少一个候选同步参考源。
  46. 根据权利要求45所述的方法,其特征在于,所述第一信息用于指示以下至少一种信息:
    作为所述候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
    作为所述候选同步参考源的终端设备的覆盖指示;
    作为所述候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
    作为所述候选同步参考源的终端设备的侧行链路层2标识;
    作为所述候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
    所述候选同步参考源的类型为GNSS;
    所述候选同步参考源的类型为接入网设备;
    作为所述候选同步参考源的接入网设备标识。
  47. 根据权利要求45所述的方法,其特征在于,响应于所述第一信息用于指示多个候选同步参考源,所述第一信息还包括所述多个候选同步参考源的优先级。
  48. 根据权利要求41或45所述的方法,其特征在于,响应于所述第一信息包括优先级信息和第一指示信息,其中,所述优先级信息用于确定至少一个同步参考源类型的优先级,所述第一指示信息用于指示至少一个候选同步参考源;
    所述第一指示信息用于确定所述第一终端设备的目标同步参考源。
  49. 根据权利要求48所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述优先级信息,用于确定所述第一终端设备的目标同步参考源。
  50. 根据权利要求48所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述方法还包括:
    接收所述第一终端设备发送的反馈信息;
    所述反馈信息用于指示所述第一终端设备无法与指示的目标同步参考源同步。
  51. 根据权利要求38,40-50任一项所述的方法,其特征在于,所述第一信息包括在以下至少一种消息中:
    系统广播消息;
    无线资源控制RRC重配消息;
    无线资源控制RRC连接释放消息。
  52. 根据权利要求39-50任一项所述的方法,其特征在于,所述第一信息包括在LTE定位协议LPP消息中。
  53. 根据权利要求38-52任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示所述第一信息的生效时间。
  54. 根据权利要求38-52任一项所述的方法,其特征在于,所述第一信息还包括以下至少一种信息:
    所述目标同步参考源的参考信号接收功率RSRP绝对门限值;
    所述目标同步参考源的参考信号接收功率RSRP相对门限值;
    所述目标同步参考源的层3滤波系数;
    其中,所述RSRP绝对门限值或所述RSRP相对门限值,用于确定满足所述RSRP绝对门限值或所述RSRP相对门限值要求的候选同步参考源作为所述目标同步参考源;
    所述目标同步参考源为侧行链路终端设备。
  55. 根据权利要求38-54任一项所述的方法,其特征在于,所述第一终端设备为侧行链路终端设备,所述侧行链路终端设备包括以下至少一种:
    主定位辅助终端设备;
    定位辅助终端设备;
    被定位的终端设备。
  56. 一种同步参考源的确定方法,其特征在于,所述方法由核心网设备执行,所述方法包括:
    向第一终端设备发送第一信息;
    所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  57. 根据权利要求56所述的方法,其特征在于,所述目标同步参考源为侧行链路定位专用的同步参考源,或者,所述目标同步参考源为侧行链路定位与侧行链路通信共用的同步参考源。
  58. 根据权利要求56或57所述的方法,其特征在于,所述第一信息用于确定至少一个同步参考源类型的优先级。
  59. 根据权利要求58所述的方法,其特征在于,所述第一信息为以下至少一种:
    全球导航卫星系统GNSS优先;
    接入网设备优先;
    侧行链路终端设备优先。
  60. 根据权利要求59所述的方法,其特征在于,响应于所述优先级信息为GNSS优先,所述第一信息用于确定GNSS作为所述第一终端设备的目标同步参考源。
  61. 根据权利要求60所述的方法,其特征在于,响应于所述第一终端设备无法获取所述GNSS作为所述目标同步参考源,所述第一信息用于确定侧行链路终端设备作为所述第一终端设备的目标同步参考源。
  62. 根据权利要求56或57所述的方法,其特征在于,所述第一信息用于指示至少一个候选同步参考源。
  63. 根据权利要求62所述的方法,其特征在于,所述第一信息用于指示以下至少一种信息:
    作为所述候选同步参考源的终端设备的侧行链路同步序列标识SL SSID;
    作为所述候选同步参考源的终端设备的覆盖指示;
    作为所述候选同步参考源的终端设备的侧行链路同步信号块SL SSB时域分配信息;
    作为所述候选同步参考源的终端设备的侧行链路层2标识;
    作为所述候选同步参考源的终端设备的侧行链路定位参考信号SL PRS标识;
    所述候选同步参考源的类型为GNSS;
    所述候选同步参考源的类型为接入网设备;
    作为所述候选同步参考源的接入网设备标识。
  64. 根据权利要求62所述的方法,其特征在于,响应于所述第一信息用于指示多个候选同步参考源,所述第一信息还包括所述多个候选同步参考源的优先级。
  65. 根据权利要求58或62所述的方法,其特征在于,响应于所述第一信息包括优先级信息和第一指示信息,其中,所述优先级信息用于确定至少一个同步参考源类型的优先级,所述第一指示信息用于指示至少一个候选同步参考源;
    所述第一指示信息用于确定所述第一终端设备的目标同步参考源。
  66. 根据权利要求65所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述优先级信息,用于确定所述第一终端设备的目标同步参考源。
  67. 根据权利要求65所述的方法,其特征在于,响应于所述第一终端设备无法获取所述第一指示信息指示的至少一个候选同步参考源,所述方法还包括:
    接收所述第一终端设备发送的反馈信息;
    所述反馈信息用于指示所述第一终端设备无法与指示的目标同步参考源同步。
  68. 根据权利要求56-67任一项所述的方法,其特征在于,所述第一信息包括在LTE定位协议LPP消息中。
  69. 根据权利要求56-68任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示所述第一信息的生效时间。
  70. 根据权利要求56-68任一项所述的方法,其特征在于,所述第一信息还包括以下至少一种信息:
    所述目标同步参考源的参考信号接收功率RSRP绝对门限值;
    所述目标同步参考源的参考信号接收功率RSRP相对门限值;
    所述目标同步参考源的层3滤波系数;
    其中,所述RSRP绝对门限值或所述RSRP相对门限值,用于确定满足所述RSRP绝对门限值或所述RSRP相对门限值要求的候选同步参考源作为所述目标同步参考源;
    所述目标同步参考源为侧行链路终端设备。
  71. 根据权利要求56-70任一项所述的方法,其特征在于,所述第一终端设备为侧行链路终端设备, 所述侧行链路终端设备包括以下至少一种:
    主定位辅助终端设备;
    定位辅助终端设备;
    被定位的终端设备。
  72. 一种同步参考源的确定装置,其特征在于,所述装置应用于第一终端设备,所述装置包括:
    收发单元,用于接收与同步参考源相关的第一信息;
    处理单元,用于根据所述第一信息,确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  73. 一种同步参考源的确定装置,其特征在于,所述装置应用于第二终端设备,所述装置包括:
    收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
    所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  74. 一种同步参考源的确定装置,其特征在于,所述装置应用于接入网设备,所述装置包括:
    收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
    所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  75. 一种同步参考源的确定装置,其特征在于,所述装置应用于核心网设备,所述装置包括:
    收发单元,用于向第一终端设备发送与同步参考源相关的第一信息;
    所述第一信息,用于确定所述第一终端设备的目标同步参考源;
    其中,所述目标同步参考源用于侧行链路sidelink的定位。
  76. 一种通信装置,其特征在于,所述装置包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器执行所述存储器中存储的计算机程序,以使所述装置执行如权利要求1至21中任一项所述的方法,或者执行如权利要求22至37中任一项所述的方法,或者执行如权利要求38至55中任一项所述的方法,或者执行如权利要求56-71中任一项所述的方法。
  77. 一种计算机可读存储介质,用于存储有指令,当所述指令被执行时,使如权利要求1至21中任一项所述的方法被实现,或者使如权利要求22至37中任一项所述的方法被实现,或者使如权利要求38至55中任一项所述的方法被实现,或者使如权利要求56-71中任一项所述的方法被实现。
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