WO2022021437A1 - 通信方法、装置及系统 - Google Patents

通信方法、装置及系统 Download PDF

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Publication number
WO2022021437A1
WO2022021437A1 PCT/CN2020/106440 CN2020106440W WO2022021437A1 WO 2022021437 A1 WO2022021437 A1 WO 2022021437A1 CN 2020106440 W CN2020106440 W CN 2020106440W WO 2022021437 A1 WO2022021437 A1 WO 2022021437A1
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WO
WIPO (PCT)
Prior art keywords
srs
access network
information
network device
management function
Prior art date
Application number
PCT/CN2020/106440
Other languages
English (en)
French (fr)
Inventor
郝金平
黄甦
晋英豪
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20920768.7A priority Critical patent/EP3975632A4/en
Priority to CN202080004987.8A priority patent/CN114270964B/zh
Priority to JP2023506321A priority patent/JP7485850B2/ja
Priority to CN202110294832.9A priority patent/CN113132899B/zh
Priority to AU2020460756A priority patent/AU2020460756A1/en
Priority to KR1020237005811A priority patent/KR20230042067A/ko
Priority to PCT/CN2020/106440 priority patent/WO2022021437A1/zh
Priority to CA3187824A priority patent/CA3187824A1/en
Priority to TW110128188A priority patent/TWI802945B/zh
Priority to US17/390,299 priority patent/US20220038969A1/en
Publication of WO2022021437A1 publication Critical patent/WO2022021437A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0236—Assistance data, e.g. base station almanac
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, device, and system.
  • Positioning is one of the important functions in the fifth generation (5th generation, 5G) (also known as new radio (NR)) communication system, and the 3rd generation partnership project (3GPP) R16 defines Multiple positioning technologies including uplink positioning.
  • the uplink positioning may include uplink time difference of arrival (uplink time difference of arrival, UL-TDOA) positioning and uplink angle of arrival (uplink angle of arrival, UL-AOA) positioning.
  • the location management function (LMF) network element requests the serving base station of the terminal to configure a sounding reference signal (SRS) for the terminal, and selects the measurement base station to measure the SRS sent by the terminal. After the measurement base station performs the measurement, it reports the measurement quantity of the SRS to the LMF network element, so that the LMF network element determines the position of the terminal according to the measurement quantity.
  • the measurement base station usually includes a serving base station or a neighboring cell base station of the terminal device.
  • the LMF network element can configure the measurement base station to periodically measure the SRS of the terminal and report the measurement measurement.
  • the terminal may move and switch to other cells. At this time, if the positioning service of the terminal has not ended, the measurement base station selected by the LMF network element before the terminal is handed over may not be able to continue to measure the SRS of the terminal, resulting in Positioning failed.
  • the embodiments of the present application provide a communication method, device, and system, which can maintain the continuity of the positioning service and improve the positioning success rate.
  • a communication method comprising: a location management function network element receiving a first message from a communication device, the first message including identification information of a target cell; the location management function network element sending a measurement access network The device sends a second message, where the second message is used to request to measure the sounding reference signal SRS sent by the terminal device, and the SRS is used to determine the position of the terminal device after switching to the target cell.
  • the location management function network element can receive the identification information of the target cell from the communication device, so that the location management function network element perceives the handover of the terminal device, and according to the identification of the target cell to measure
  • the access network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can finally determine, according to the measurement quantity reported by the measurement access network device, the terminal device after switching to the target cell. position, so as to complete the positioning, maintain the continuity of positioning, and improve the success rate of positioning.
  • the communication method may further include: the location management function network element determining the measurement access network device according to the first message. Based on this possible design, the location management function network element can be made to determine the measurement access network device according to the identity of the target cell after the terminal device is handed over to the target cell.
  • the communication method may further include: the location management function network element receives the measurement of the SRS, and determines the position of the terminal device after switching to the target cell according to the measurement of the SRS. Based on this possible design, the location management function network element can determine the location of the terminal device after switching to the target cell according to the measurement reported by the measurement access network device, so as to complete the positioning, maintain the continuity of the positioning, and improve the success rate of the positioning.
  • the first message further includes first indication information, where the first indication information is used to instruct the terminal device to perform handover.
  • the location management function network element can be made aware of the handover of the terminal device.
  • the communication method may further include: the location management network element sending information of the transmission and reception point TRP of the measurement access network device to the measurement access network device, where the TRP information is used to indicate the measurement access network The TRP used to measure the SRS in the network equipment. Based on this possible design, the TRP for measuring the SRS can be indicated to the measuring access network device, so as to avoid the measuring access network device using all TRPs to measure the SRS and wasting the power consumption and resources of the measuring access network device.
  • the communication method may further include: the location management function network element receives first SRS configuration information from the target access network device, where the first SRS configuration information is used by the terminal device to send the SRS; the location management The functional network element sends the first SRS configuration information to the measurement access network device.
  • the measurement access network device includes a first measurement access network device, and the first measurement access network device is an access network device that does not measure the SRS of the terminal device before the terminal device switches to the target cell ;
  • the communication method may further include: the location management function network element receives second indication information from the target access network device, the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, the first The second SRS configuration information is the SRS configuration information determined by the source access network device; the location management function network element sends the second SRS configuration information to the first measurement access network device.
  • the communication method may further include: the location management function network element sends a request message to the target access network device, where the request message is used to request the target access network device to configure the SRS for the terminal device, or, in other words, the The request message is used to request SRS configuration information.
  • the request message includes period information of the SRS and/or frequency information of the SRS, where the period information is used to indicate the period of the SRS, and the frequency information is used to indicate the frequency of the SRS or, using to indicate the frequency of the SRS carrier.
  • the location management function network element carries the period information in the request message, and recommends the period of the SRS for the target access network device, so that the target access network device can configure the terminal device according to the period recommended by the location management function network element
  • the period for sending the SRS so that the period of the SRS configured by the target access network device is close to or equal to the period of the SRS expected by the location management function network element, so that the location management function network element controls the SRS measurement delay through the SRS transmission period, In order to control the time delay of the positioning service, it can meet the needs of the positioning service.
  • the location management function network element when the location management function network element carries frequency information in the request message, the location management function network element can recommend (or indicate) the frequency point used for the SRS to the target access network device, so that the target access network
  • the device can configure the SRS for the terminal device according to the recommendation of the location management network element, so as to avoid the problem that the target access network device configures the SRS on other frequency points, and the measurement access network device selected by the location management function network element cannot measure the SRS.
  • the success rate of SRS measurement thereby improving the positioning success rate.
  • the measurement access network device includes a second measurement access network device, where the second measurement access network device is used to measure the SRS access of the terminal device before the terminal device switches to the target cell before the location management function network element sends the second message to the second measurement access network device
  • the communication method may further include: the location management function network element sends a notification message to the second measurement access network device, the notification The message is used to notify the second measurement access network device to stop measuring the SRS. That is to say, the location management function network element may first instruct the second measurement access network device to stop measuring according to the SRS configuration before the terminal device is switched, and then request the second measurement access network device to measure according to the SRS configuration after the terminal device is switched.
  • the location management function network element may send the second SRS configuration information to the first SRS configuration information when the target access network device does not use the second SRS configuration information, that is, the location management function network element receives the first SRS configuration information from the target access network device. 2.
  • the measurement access network device sends the notification message.
  • the second measurement access network device can be made to stop measuring the SRS configured by the source access network device, release the measurement resources of these measurement access network devices, and reduce their energy consumption.
  • the communication method may further include: the location management function network element sending third indication information to the target access network device, where the third indication information is used to indicate the reporting granularity of the measurement amount of the SRS.
  • the location management function network element can indicate the reporting granularity of the measurement amount to the measurement access network device, thereby ensuring the accuracy of the measurement result and the positioning result, and improving the positioning accuracy.
  • the communication method may further include: the location management function network element sending fourth indication information to the target access network device, where the fourth indication information is used to instruct the target access network device to stop configuring SRS for the terminal device .
  • the target access network equipment can be made to stop configuring SRS for the terminal equipment, and then the terminal equipment can be made to stop sending SRS according to the configuration of the target access network equipment, thereby releasing the resources of the terminal equipment and reducing the service to the terminal equipment. performance impact and end-device energy consumption.
  • a communication method includes: a communication device determines that a terminal device is handed over to a target cell; and the communication device sends a first message to a location management function network element, where the first message includes identification information of the target cell.
  • the communication device can send the identification information of the target cell to the location management function network element, so that the location management function network element perceives the handover of the terminal device, and according to the identification of the target cell to the measurement access
  • the network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can finally determine the location of the terminal device after switching to the target cell according to the measurement amount reported by the measurement access network device,
  • positioning is completed, the continuity of positioning is maintained, and the success rate of positioning is improved.
  • the first message further includes first indication information, where the first indication information is used to instruct the terminal device to perform handover.
  • the communication device is a source access network device
  • the communication device determining that the terminal device is handed over to the target cell may include: when the source access network device receives a third message from the target access network device In this case, the source access network device determines that the terminal device switches to the target cell, and the third message is used to notify the source access network device to release the context of the terminal device, or to request the source access network device for the terminal device. context.
  • the communication device is a target access network device, and before the target access network device sends the first message to the location management function network element, the communication method further includes: the target access network device receives The identification information of the location management function network element and the information of the sounding reference signal SRS from the source access network device, where the information of the SRS is used to indicate the transmission characteristic of the SRS.
  • the communication method may further include: the target access network device sends first SRS configuration information to the location management function network element, where the first SRS configuration information is used by the terminal device to send SRS, and the SRS is used for to determine the location of the terminal device.
  • the communication method may further include: the target access network device sending second indication information to the location management function network element, where the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, where the second SRS configuration information is the SRS configuration information determined by the source access network device.
  • the communication method may further include: the target access network device receives a request message from the location management function network element, where the request message is used to request SRS configuration information.
  • the request message includes period information of the SRS and/or frequency information of the SRS, where the period information is used to indicate the period of the SRS, the frequency information is used to indicate the frequency point of the SRS, or is used to indicate the SRS carrier frequency point.
  • the communication device is a mobility management function network element, and the communication device determines that the terminal device is handed over to the target cell, which may include: receiving a fourth message from the target access network device at the mobility management function network element
  • the mobility management function network element determines that the terminal device switches to the target cell, and the fourth message is used to request to switch the downlink data path of the terminal device to the target access network device.
  • a communication method comprising: a location management function network element determining period information and/or frequency information of the SRS, where the period information is used to indicate the period of the SRS, and the frequency information is used to indicate the frequency of the SRS point or the frequency point of the carrier used for transmitting the SRS; the location management function network element sends the period information and/or the frequency information to the serving access network device.
  • the serving access network device may be the access network device to which the current serving cell of the terminal device belongs.
  • the location management function network element sends cycle information to the serving access network device to recommend the SRS cycle for the serving access network device, so that the serving access network device can configure the terminal device according to the cycle recommended by the location management function network element
  • the period of sending the SRS so that the period of the SRS configured by the serving access network equipment is close to or equal to the period of the SRS expected by the location management function network element, so that the location management function network element can control the SRS measurement delay through the SRS transmission period, In order to control the time delay of the positioning service, it can meet the needs of the positioning service.
  • the location management function network element sends frequency information to the serving access network device, and can recommend (or indicate) the frequency point used for SRS to the target access network device, so that the serving access network device can manage the network element according to the location It is recommended to configure SRS for terminal equipment, so as to avoid the problem that the service access network equipment is configured with SRS on other frequency points, resulting in the problem that the measurement access network equipment selected by the location management function network element cannot measure the SRS, and the success rate of SRS measurement is improved. Improve positioning success rate.
  • a communication method comprising: the location management function network element determines the reporting granularity of the measurement amount of the SRS; the location management function network element sends indication information to the measurement access network device, where the indication information is used for Indicates the reporting granularity of the measured amount of this SRS.
  • the network element of the location management function can indicate the reporting granularity of the measurement quantity to the measurement access network device, thereby ensuring the accuracy of the measurement result and the positioning result, and improving the positioning accuracy.
  • a communication method includes: a location management function network element generates indication information, the indication information is used to instruct to stop configuring SRS for a terminal device; the location management function network element sends the information to a serving access network device. Instructions.
  • the target access network device can be made to stop configuring SRS for the terminal device, and then the terminal device can be made to stop sending SRS according to the configuration of the target access network device, thereby releasing the resources of the terminal device and reducing the impact on the service performance of the terminal device. impact and the energy consumption of end equipment.
  • a communication method includes: the communication device determines that the terminal device is handed over to a target cell; and sends a first message to a location management function network element, where the first message includes identification information of the target cell.
  • the location management function network element receives the first message from the communication device, and sends a second message to the measurement access network device, where the second message is used to request the measurement of the sounding reference signal SRS sent by the terminal device, and the SRS is used to determine the terminal The position of the device after handover to the target cell.
  • a communication device for implementing any one of the methods in the foregoing aspects.
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • the communication device includes corresponding modules, units, or means (means) for implementing the above method, and the modules, units, or means may be implemented by hardware, software, or by executing corresponding software in hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device may be the above-mentioned location management function network element, and the communication device includes a receiving module and a sending module.
  • the communication device may further include a processing module.
  • the receiving module is configured to receive a first message from the communication device, where the first message includes identification information of the target cell; the sending module is configured to send a second message to the measurement access network device, where the second message is used to request The sounding reference signal SRS sent by the terminal equipment is measured, and the SRS is used to determine the position of the terminal equipment after switching to the target cell.
  • the receiving module is further configured to receive the measurement of the SRS; the processing module is configured to determine the position of the terminal device after switching to the target cell according to the measurement of the SRS.
  • the sending module is further configured to send information about the transmission and reception point TRP of the measurement access network device to the measurement access network device, where the TRP information is used to indicate that the measurement access network device is used to measure the TRP. TRP of SRS.
  • the receiving module is further configured to receive the first SRS configuration information from the target access network device, where the first SRS configuration information is used for the terminal device to send the SRS; the sending module is also configured to send the measurement The access network device sends the first SRS configuration information.
  • the receiving module is further configured to receive second indication information from the target access network device, where the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, the second The SRS configuration information is the SRS configuration information determined by the source access network device; the sending module is further configured to send the second SRS configuration information to the first measurement access network device.
  • the sending module is further configured to send a request message to the target access network device, where the request message is used to request the target access network device to configure SRS for the terminal device, or in other words, to request SRS configuration information.
  • the sending module is further configured to send a notification message to the second measurement access network device, where the notification message is used to notify the second measurement access network device to stop measuring the SRS.
  • the sending module is further configured to send third indication information to the measuring access network device, where the third indication information is used to indicate the reporting granularity of the measurement amount of the SRS.
  • the sending module is further configured to send fourth indication information to the target access network device, where the fourth indication information is used to instruct the target access network device to stop configuring the SRS for the terminal device.
  • the processing module is used to determine the period information and/or frequency information of the SRS, the period information is used to indicate the period of the SRS, and the frequency information is used to indicate the frequency point of the SRS or the frequency point of the SRS carrier; for sending the period information and/or frequency information to the serving access network device.
  • the processing module is used for determining the reporting granularity of the SRS measurement; the sending module is used for sending indication information to the measuring access network device, where the indication information is used to indicate the reporting granularity of the SRS measurement.
  • the processing module is used to generate indication information, the indication information is used to instruct to stop configuring the SRS for the terminal device; the sending module is used to send the indication information to the serving access network device.
  • the communication device may be the above-mentioned location management function network element, and the communication device includes a processing module and a transceiver module.
  • the processing module is used for determining that the terminal equipment is handed over to the target cell; the transceiver module is used for sending a first message to the location management function network element, where the first message includes identification information of the target cell.
  • the communication device is a source access network device
  • the processing module, for determining that the terminal device switches to the target cell may include: when the transceiver module receives a third message from the target access network device , a processing module configured to determine that the terminal device switches to the target cell, and the third message is used to notify the communication device to release the context of the terminal device, or to request the communication device for the context of the terminal device.
  • the communication device may be a target access network device, a transceiver module, and is further configured to receive identification information and SRS information from the location management function network element of the source access network device, and the SRS information is used for Indicates the transmission characteristics of the SRS.
  • the transceiver module is further configured to send first SRS configuration information to the location management function network element, where the first SRS configuration information is used by the terminal device to send an SRS, and the SRS is used to determine the location of the terminal device.
  • the transceiver module is further configured to send second indication information to the location management function network element, where the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, the second SRS configuration The information is SRS configuration information determined by the source access network device.
  • the transceiver module is further configured to receive a request message from the location management function network element, where the request message is used to request SRS configuration information.
  • the communication device may be a mobility management function network element
  • the processing module for determining that the terminal device is handed over to the target cell, may include: when the transceiver module receives the fourth message from the target access network device. Next, the processing module is configured to determine that the terminal device is switched to the target cell, and the fourth message is used to request to switch the downlink data path of the terminal device to the target access network device.
  • a communication device comprising: a memory and at least one processor; the memory is used for storing computer instructions, when the processor executes the instructions, so that the communication device executes any of the above-mentioned aspects. method.
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • a device included in a network element, such as a chip; or, in some other implementations, the communication device may be the communication device in the second aspect, or a device including the communication device, or a device included in the communication device.
  • a communication device comprising: an interface circuit and at least one processor, the interface circuit can be a code/data read/write interface circuit, and the interface circuit is used to receive a computer-executed instruction (the computer-executed instruction is stored in a memory) , possibly directly from memory, or possibly via other devices) and transferred to the processor; the processor is used to run the computer-executed instructions to perform the method described in any of the above aspects.
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • a device included in a network element, such as a chip; or, in some other implementations, the communication device may be the communication device in the second aspect, or a device including the communication device, or a device included in the communication device.
  • a communication device comprising: at least one processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the method according to any one of the preceding aspects according to the instruction .
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • a device included in a network element, such as a chip; or, in some other implementations, the communication device may be the communication device in the second aspect, or a device including the communication device, or a device included in the communication device.
  • a computer-readable storage medium having instructions stored in the computer-readable storage medium, when executed on a communication device, enables the communication device to perform the method described in any of the above aspects.
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • a device included in a network element, such as a chip; or, in some other implementations, the communication device may be the communication device in the second aspect, or a device including the communication device, or a device included in the communication device.
  • a twelfth aspect provides a computer program product comprising instructions which, when executed on a communication device, enable the communication device to perform the method of any of the preceding aspects.
  • the communication device may be the location management function network element in the above first aspect or the third aspect or the fourth aspect or the fifth aspect, or a device including the above location management function network element, or the above location management function network element.
  • a device included in a network element, such as a chip; or, in some other implementations, the communication device may be the communication device in the second aspect, or a device including the communication device, or a device included in the communication device.
  • a thirteenth aspect provides a communication apparatus (for example, the communication apparatus may be a chip or a chip system), the communication apparatus includes at least one processor for implementing the functions involved in any of the above aspects.
  • the communication device further includes a memory for storing necessary program instructions and/or data.
  • the communication device is a chip system, it may be constituted by a chip, or may include a chip and other discrete devices.
  • a fourteenth aspect provides a communication system, which includes the location management function network element described in the foregoing aspect and the communication device described in the foregoing aspect.
  • the communication device is used for determining that the terminal device is handed over to the target cell; and sending a first message to the location management function network element, where the first message includes identification information of the target cell.
  • the location management function network element is used to receive the first message from the communication device, and the location management function network element is also used to send a second message to the measurement access network device, where the second message is used to request the measurement terminal device to send the message.
  • Sounding reference signal SRS Sounding reference signal SRS, the SRS is used to determine the position of the terminal equipment after handover to the target cell.
  • the technical effect brought by any one of the design methods in the sixth aspect to the fourteenth aspect can refer to the above-mentioned first aspect or the second aspect or the third aspect or the fourth aspect or the fifth aspect.
  • the technical effect obtained is not repeated here.
  • FIG. 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1b is a schematic diagram of the architecture of another communication system provided by an embodiment of the application.
  • FIG. 2 provides a schematic diagram of the architecture of another communication system according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart 1 of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a communication method provided in an embodiment of the present application in a scenario where the communication device is a source access network device;
  • FIG. 6 is a schematic flowchart of a communication method provided in an embodiment of the present application in a scenario where a communication device is a target access network device;
  • FIG. 7 is a schematic flowchart of a communication method in a scenario where a communication device is a mobility management function network element provided by an embodiment of the present application;
  • FIG. 8 is a second schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 9 is a third schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 10 is a fourth schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of still another communication apparatus provided by an embodiment of the present application.
  • At least one item(s) below or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • the positioning request processing method provided by the embodiments of the present application may be applicable to various system architectures.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the communication system 10 includes a communication device 101 and a network element 102 with a location management function.
  • the communication system 10 may further include a measurement access network device 103 .
  • the communication device 101 and the location management function network element 102 may communicate directly or communicate through forwarding by other devices, which is not specifically limited in this embodiment of the present application.
  • the communication device 101 may be one of a source access network device, a target access network device, or a mobility management function network element.
  • the measurement access network device refers to the access network device that can measure the SRS of the terminal device according to the request of the location management function network element. This implementation does not specifically limit its name. In practical applications, the measurement access network device also Other names are possible.
  • the communication device 101 is configured to determine that the terminal device is handed over to the target cell; and send a first message to the location management function network element 102, where the first message includes identification information of the target cell.
  • the location management function network element 102 is configured to receive the first message from the communication device.
  • the location management function network element 102 is further configured to send a second message to the measurement access network device 103, where the second message is used to request the measurement of the sounding reference signal SRS sent by the terminal device, and the SRS is used to determine that the terminal device is handed over to the target cell rear position.
  • the communication device may send the identification information of the target cell to the location management function network element, so that the location management function network element perceives the handover of the terminal device, and according to the target cell
  • the identifier of the measurement access network device sends a second message to the measurement access network device to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can determine the terminal device to switch to position behind the target cell, so as to complete the positioning, maintain the continuity of positioning, and improve the success rate of positioning.
  • the communication system 20 may also include It includes a terminal device 201, a source access network device 202, a target access network device 203, and a mobility management function network element 204.
  • the source access network device 202 is the access network device to which the source cell belongs
  • the target access network device 203 is the access network device to which the target cell belongs.
  • the terminal device keeps connection with the source access network device 202 before the handover occurs, and keeps the connection with the target access network device 203 after the handover occurs as an example for description.
  • any one of the source access network device 202, the target access network device 203, and the mobility management function network element 204 can be used as the communication device 101 in FIG. 1a.
  • the location management function network element 102 in addition to having the above functions, can also be used for location request management of location services, location resource allocation, acquisition of location information of terminal equipment, and return of location information to relevant network elements.
  • the network element or entity corresponding to the location management function network element 102 may be a location management function (location management function, LMF) network element in the 5G network architecture.
  • LMF location management function
  • Nlmf is a service-based interface provided by LMF network elements, and LMF network elements can communicate with other network functions through Nlmf.
  • future communications such as the 6th generation (the 6th generation, 6G) system, the location management function network element 102 may still be an LMF network element, or the location management function network element 102 has other names, which are not limited in this embodiment of the present application .
  • the terminal device 201 may be a device for implementing a wireless communication function, such as a terminal or a chip that can be used in the terminal, and the like.
  • the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device in a 5G network or a future evolved PLMN. equipment, terminal agent or terminal device, etc.
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) Wireless terminals in control), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a wireless communication Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) Wireless terminals in control), wireless terminals in self-driving, wireless
  • the mobility management function network element 204 can be used for mobility management in the mobile network, such as user location update, user registration in the network, user handover, and the like.
  • the network element or entity corresponding to the mobility management function network element 204 may be an access and mobility management function (AMF) network element in the 5G network architecture.
  • AMF access and mobility management function
  • Namf is a service-based interface provided by AMF network elements.
  • AMF network elements can communicate with other network functions through Namf.
  • future communications such as the 6th generation (6G) system, the mobility management function network element 204 is still It may be an AMF network element, or the mobility management function network element 204 has other names, which are not limited in this embodiment of the present application.
  • the access network device (including the source access network device 202 , the target access network device 203 , and the measurement access network device 103 ) is a device that provides wireless communication functions for terminal devices.
  • Access devices include, but are not limited to, next-generation base stations (gnodeB, gNB) in 5G, evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node B) , NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU) ), transmitting point (TP), mobile switching center, etc.
  • gnodeB, gNB next-generation base stations
  • eNB evolved node B
  • RNC radio network controller
  • node B node B
  • NB base station controller
  • BSC base transceiver station
  • the base station in this embodiment of the present application may include various forms of base station, for example, a macro base station, a micro base station (also referred to as a small cell), an access point, etc., which are not specifically limited in this embodiment of the present application.
  • the access network device in this embodiment of the present application may include one or more transmitting and receiving points (transmitting and receiving points, TRP).
  • TRP transmitting and receiving points
  • the access network device in this embodiment of the present application may be composed of a centralized unit (central unit, CU) and one or more distributed units (distributed unit, DU).
  • CU central unit
  • DU distributed unit
  • CU and DU can be understood as the division of access network equipment from the perspective of logical functions.
  • the CU and the DU may be physically separated, or may be deployed together, which is not specifically limited in this embodiment of the present application.
  • the CU and the DU can be connected through an interface, such as an F1 interface.
  • CU and DU can be divided according to the protocol layer of the wireless network.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • the functions of the radio link control (radio link control, RLC) protocol layer, the media access control (media access control, MAC) protocol layer, and the physical (physical, PHY) protocol layer are set in the DU.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the CU can be composed of a CU control plane (CU control plane, CU-CP) and a CU user plane (CU user plane, CU-UP).
  • CU-CP and CU-UP can be understood as logical functions for CU slaves angle is divided.
  • the CU-CP and CU-UP can be divided according to the protocol layer of the wireless network. For example, the functions of the RRC protocol layer and the PDCP protocol layer corresponding to the signaling radio bearer (SRB) are set in the CU-CP, and the data The function of the PDCP protocol layer corresponding to the radio bearer (data radio bearer, DRB) is set in the CU-UP. In addition, the function of the SDAP protocol layer may also be set in the CU-UP.
  • the TRP can be deployed in the DU, or in other words, the TRP is a component in the DU.
  • the communication system shown in FIG. 1a or FIG. 1b may be applied to a current 4G network, a 4.5G network, a 5G network, and other future networks, which are not specifically limited in this embodiment of the present application.
  • the network architecture may include the above-mentioned terminal equipment, source gNB, target gNB, measurement gNB, AMF network element, LMF network element.
  • the network architecture may also include a session management function (SMF) network element, a user plane function (UPF) network element, a unified data management (UDM) network element, and a network exposure function (network exposure function).
  • SMF session management function
  • UPF user plane function
  • UDM unified data management
  • network exposure function network exposure function
  • NEF network element
  • authentication server function authentication server function
  • AUSF authentication server function
  • network slice selection function network slice selection function
  • NRF network exposure function Repository Function
  • PCF policy control function
  • UDR unified data repository
  • USF unstructured data storage function
  • the terminal device can communicate with the AMF network element through the N1 interface, and the N1 interface can be understood as the reference point between the terminal device and the AMF network element; the measurement gNB and the target gNB can also communicate with the UPF network through the N3 interface. Meta Communications.
  • the N2 interface in Figure 2 is the reference point of the gNB and the AMF network element, which is used for sending non-access stratum (NAS) messages and next generation application protocol (NGAP) messages, etc. ;
  • N3 interface is the reference point of gNB and UPF network element, used to transmit user plane data, etc.;
  • N4 interface is the reference point between SMF and UPF, used to transmit tunnel identification information such as N3 connection, data cache indication information, and downlink data notification messages and other information;
  • the N6 interface is the reference point between the UPF network element and the data network (DN), which is used to transmit data on the user plane.
  • DN data network
  • AUSF network element AMF network element, SMF network element, LMF network element, NSSF network element, NEF network element, NRF network element, PCF network element, UDM network element, UDR network element, or UDSF network element shown in FIG. 2
  • Elements and other control plane network elements can also use service interfaces to interact.
  • the service interface provided by the AUSF network element can be Nausf; the service interface provided by the AMF network element can be Namf; the service interface provided by the SMF network element can be Nsmf; the service interface provided by the NSSG network element It can be Nnssf; the service interface provided by the NEF network element can be Nnef; the service interface provided by the NRF network element can be Nnrf; the service interface provided by the PCF network element can be Npcf; the service provided by the UDM network element externally
  • the interface can be Nudm.
  • the above-mentioned network elements or functions can be either network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (for example, a cloud platform).
  • the above network elements or functions may be divided into one or more services, and further, services that exist independently of network functions may also appear.
  • an instance of the above-mentioned function, or an instance of a service included in the above-mentioned function, or a service instance that exists independently of a network function may be referred to as a service instance.
  • FIG. 3 is a schematic diagram of a hardware structure of a communication apparatus 300 according to an embodiment of the present application.
  • the communication device 300 includes a processor 301, a communication line 302, and at least one communication interface (in FIG. 3, it is only an example to include the communication interface 304 for illustration).
  • the communication apparatus may further include a memory 303 .
  • the processor 301 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication line 302 may include a path to communicate information between the aforementioned components.
  • Communication interface 304 using any transceiver-like device, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • Memory 303 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being executed by a computer Access any other medium without limitation.
  • the memory may exist independently and be connected to the processor through communication line 302 .
  • the memory can also be integrated with the processor.
  • the memory 303 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 301 .
  • the processor 301 is configured to execute the computer-executed instructions stored in the memory 303, thereby implementing the communication methods provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.
  • the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3 .
  • the communication apparatus 300 may include multiple processors, such as the processor 301 and the processor 308 in FIG. 3 .
  • processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the communication apparatus 300 may further include an output device 305 and an input device 306 .
  • the output device 305 is in communication with the processor 301 and can display information in a variety of ways.
  • the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) and the like.
  • Input device 306 is in communication with processor 301 and can receive user input in a variety of ways.
  • the input device 306 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.
  • the above-mentioned communication apparatus 300 may be a general-purpose device or a dedicated device.
  • the location management function network element has the requirement to obtain the location of the terminal equipment, and until the terminal equipment successfully accesses the target cell, the location management function network element has not yet The location of the terminal device is successfully acquired; or, the location management function network element needs to periodically and continuously acquire the location of the terminal device, and the periodic positioning has not ended until the terminal device successfully accesses the target cell.
  • the communication method provided by the embodiment of the present application can be applied to the communication system shown in FIG. 1a, and the communication method includes the following steps:
  • the communication device determines that the terminal device is handed over to the target cell.
  • the terminal equipment handover to the target cell may refer to: the terminal equipment successfully accesses the target cell, or the terminal equipment successfully switches to the target cell, or the terminal equipment completes the handover from the source cell to the target cell.
  • the communication device may be one of a source access network device, a target access network device, or a mobility management function network element.
  • the target access network device is the access network device to which the target cell belongs, or in other words, the target access network device is the access network device that manages the target cell.
  • the source access network device is the serving access network device before the terminal device switches to the target cell, and the mobility management function network element is the mobility management function network element serving the terminal device.
  • the target access network device can send relevant information of the target cell to the source access network device and the mobility management function network element.
  • the target access network device is in the handover request acknowledgment (Handover Request ACK) Send the relevant information of the target cell to the source access network device in the message; or send the relevant information of the target cell to the mobility management network element in the Path Switch Request message.
  • Handover Request ACK handover request acknowledgment
  • the relevant information of the target cell may include, for example, identification information of the target cell, system information of the target cell, identification of the terminal device in the target cell, random access channel (random access channel, RACH) resources, and the like.
  • identification information of the target cell may include, for example, identification information of the target cell, system information of the target cell, identification of the terminal device in the target cell, random access channel (random access channel, RACH) resources, and the like.
  • RACH random access channel
  • the communication device sends a first message to the location management function network element.
  • the location management function network element receives the first message from the communication device.
  • the first message is used to instruct the terminal device to switch to the target cell.
  • the first message includes identification information of the target cell.
  • the identification information of the target cell can be, for example, the CGI of the target cell, or the frequency point and physical cell identifier (PCI) of the target cell, or other identifiers that can be used to uniquely identify the target cell. There is no specific limitation on this.
  • the first message may further include first indication information, where the first indication information is used to instruct the terminal device to perform handover.
  • the location management function network element sends a second message to the measurement access network device.
  • the measurement access network device receives the second message from the location management function network element.
  • the second message is used to request to measure the SRS sent by the terminal device, and the SRS is used to determine the position of the terminal device after switching to the target cell.
  • step S403 it is not limited to have only one measurement access network device, that is, the location management function network element can send the second message to multiple measurement access network devices.
  • the network element of the location management function may re-determine (or select) the measurement access network device according to the identification information of the target cell included in the first message.
  • the second message is sent to the measurement access network device.
  • the measurement access network device determined by the location management function network element according to the identification information of the target cell may include at least one of the following: access network devices to which neighboring cells of the target cell belong, and access network devices to which the target cell belongs. , that is, the target access network device.
  • the communication device can send the identification information of the target cell to the location management function network element, so that the location management function network element perceives the handover of the terminal device, and according to the identification of the target cell to the measurement access
  • the network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can finally determine the location of the terminal device after switching to the target cell according to the measurement amount reported by the measurement access network device,
  • positioning is completed, the continuity of positioning is maintained, and the success rate of positioning is improved.
  • the method shown in FIG. 4 will be described in detail by taking the above communication devices as the source access network device, the target access network device, and the mobility management function network element respectively.
  • the communication method provided by the present application can be applied to the 1b or the communication system shown in Figure 2.
  • the communication method may include the following steps:
  • the source access network device determines that the terminal device is handed over to the target cell.
  • step S501 the terminal device is switched.
  • step S501 in FIG. 5 some steps in the switching process are exemplarily shown, and the implementation of this application does not specifically limit the switching process.
  • this step S501 can also be understood as: the source access network device determines that the terminal device successfully accesses the target cell, or the source access network device determines that the terminal device is successfully handed over to the target cell, or the source access network device determines that the terminal device successfully accesses the target cell. The device is successfully handed over from the source cell to the target cell.
  • the source access network device determining that the terminal device is handed over to the target cell may include: when the source access network device receives the third message from the target access network device, determining the terminal device by the source access network device. Switch to the target cell.
  • the third message may have different functions, for example:
  • the third message is used to notify the source access network device to release the context of the terminal device.
  • the third message is UE context release (UE Context Release message).
  • the third message is used to request the source access network device for the context of the terminal device.
  • the third message is a Retrieve UE Context Request message.
  • the source access network device may receive the third message in the following scenario: the terminal device fails to access the first target cell designated by the source access network device, that is, the terminal device. A failure occurred while handing over to the first target cell. Subsequently, the terminal device initiates re-establishment to the second target cell, so that the access network device to which the second target cell belongs sends a request for obtaining UE context (Retrieve UE Context Request) to the source access network device to obtain the context of the terminal device.
  • UE context Retrieve UE Context Request
  • the access network device to which the above-mentioned second target cell belongs is the target access network device in the embodiment of the present application.
  • the third message may include identification information of the second target cell, so as to indicate to the source access network device the serving cell after the handover of the terminal device.
  • the source access network device may send the context of the terminal device to the access network device to which the second target cell belongs, and the source access network device may also release the context of the terminal device.
  • this embodiment of the present application does not specifically limit the scenario in which the source access network device receives the above-mentioned third message, and the source access network device may also receive the above-mentioned third message in other scenarios.
  • the source access network device sends a first message to the location management function network element.
  • the location management function network element receives the first message from the source access network device.
  • the first message may be a different type of message, or have a different message name, for example:
  • the first message may be an existing message, such as a positioning information request message (Positioning Information Update) message.
  • the first message may include identification information of the target cell and first indication information.
  • the first message may be a newly defined message, such as a positioning information termination (Positioning Information Terminate) message.
  • the first message may include identification information of the target cell and first indication information.
  • the positioning information termination (Positioning Information Terminate) message may be used to notify the location management function network element that the sender of the message will no longer update the SRS configuration to the location management function network element.
  • the Positioning Information Terminate message includes the identification information and the first indication information of the target cell, that is, the embodiment of the present application does not specifically limit the content included in the Positioning Information Terminate message under this scenario.
  • the source access network device sends the Positioning Information Terminate message to the location management function network element after the terminal device switches to the target cell, or other access network devices can send the message to the location management function network element under other circumstances.
  • the location management function network element sends the Positioning Information Terminate message.
  • the serving access network device may send the Positioning Information Terminate message to the location management function network element when it is determined that the terminal device is no longer configured to send the SRS for positioning, or, when the serving access network device determines that it is not In the case of updating the SRS configuration again, the Positioning Information Terminate message is sent to the location management function network element to inform the location management function network element that the serving access network device will no longer update the SRS configuration to the location management function network element.
  • the serving access network device in the embodiment of the present application refers to the access network device to which the serving cell of the terminal device belongs.
  • the first message may be a newly defined dedicated message for instructing the network element of the location management function to instruct the terminal device to perform handover, for example, a Positioning Information Indication (Positioning Information Indication) message.
  • the first message may include identification information of the target cell, and in addition, the first message may not include the first indication information.
  • the source access network device may also send the first handover request ACK message to the location management function network element after receiving the handover request acknowledgment (Handover request ACK) message from the target access network device.
  • the above step S501 may be replaced by: the source access network device determines that it has received a handover request acknowledgment (Handover request ACK) message from the target access network device, or the source access network device determines that the target access network device allows the terminal device switch.
  • the location management function network element sends a request message to the target access network device.
  • the target access network device receives the request message from the location management function network element.
  • the request message is used to request the SRS configuration information from the target access network device, or in other words, used to request the target access network device to configure the SRS for the terminal device.
  • the request message may be, for example, a positioning information request (Positioning information request) message.
  • the SRS configuration information is used to configure the SRS for the terminal device, or in other words, the SRS configuration information is used for the terminal device to send the SRS.
  • the terminal device After receiving the SRS configuration information, the terminal device can send the SRS at the corresponding time-frequency position according to the time-frequency domain resource information included in the SRS configuration information.
  • the SRS configuration information may include, but is not limited to, time domain resource configuration information, frequency domain resource configuration information, the number of SRS transmit antenna ports, period information, and the like.
  • the time domain resource configuration information may include, for example, the starting symbol position, the number of symbols, etc.; the frequency domain resource configuration information may include, for example, the frequency domain position, frequency offset, etc.
  • the period information is used to indicate the transmission period of the SRS.
  • the request message may include SRS period information and/or SRS frequency information.
  • the period information is used to indicate the period of the SRS, and the period of the SRS may be understood as the period in which the terminal device sends the SRS.
  • the location management function network element carries the cycle information in the request message, and recommends the cycle of the SRS for the target access network device, so that the target access network device can configure the terminal according to the cycle recommended by the location management function network element.
  • the period at which the device sends the SRS so that the period of the SRS configured by the target access network equipment is close to or equal to the period of the SRS expected by the location management function network element.
  • the network element of the location management function recommends the period of the SRS, it can select an appropriate period to send to the target access network device according to the delay requirement of the current positioning service, so as to control the measurement delay of the SRS through the transmission period of the SRS , and then control the time delay of the positioning service to meet the needs of the positioning service.
  • the frequency information is used to indicate the frequency of the SRS, or used to indicate the frequency of the SRS carrier.
  • the frequency point can be represented by an absolute radio frequency channel number (absolute radio frequency channel number, ARFCN).
  • the frequency point of the SRS may be the center frequency point of the bandwidth occupied by the SRS, or may be the starting frequency point of the bandwidth occupied by the SRS.
  • the bandwidth occupied by the SRS can also be understood as the SRS transmission bandwidth.
  • the frequency point of the SRS carrier may be the frequency point of the carrier center of the carrier, or may be the frequency point of point A of the carrier, or the like.
  • the bandwidth occupied by the SRS may be part or all of the bandwidth of the SRS carrier.
  • the location management function network element can select the measurement access network equipment, and recommend (or indicate) the frequency points used for SRS to the target access network equipment according to the frequency points supported by the measurement access network equipment selected by the network element, so that The target access network device can configure SRS for the terminal device according to the recommendation of the location management network element, so as to prevent the target access network device from configuring SRS on other frequency points, resulting in that the measurement access network device selected by the location management function network element cannot measure the SRS. It can improve the success rate of SRS measurement, thereby improving the success rate of positioning.
  • the location management function network element may also send the SRS period information and/or the SRS frequency information to the target access network device through other messages, which are not specifically limited in this application.
  • the target access network device sends a response message to the location management function network element.
  • the location management function network element receives the response message from the target access network device.
  • the response message may be, for example, a positioning information response (Positioning information response) message.
  • a positioning information response Positioning information response
  • the target access network device may determine the first SRS configuration information, and the response message carries the first SRS configuration information, where the first SRS configuration information is used by the terminal device to send the SRS, the The SRS is used to determine the position of the terminal equipment after handover to the target cell.
  • the target access network device may send the first SRS configuration information to the terminal device, so that the terminal device sends the SRS according to the first SRS configuration information.
  • the target access network device may determine the first SRS configuration information according to the period information of the SRS, for example, include the period information indication in the first SRS configuration information.
  • the target access network device can determine the first SRS configuration information according to the frequency information, for example, the first SRS configuration information includes the frequency point indicated by the frequency information .
  • the target access network device may use the second SRS configuration information, where the second SRS configuration information is the SRS configuration information determined by the source access network device before the terminal device switches to the target cell.
  • the SRS configuration of the terminal device by the source access network device is used.
  • the response message may include second indication information, and the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information; or, the response message may include second SRS configuration information, that is, the target access network device
  • the network access device returns the SRS configuration of the source access network device to the location management function network element; or, the response message may not carry the second indication information and the second SRS configuration information.
  • the location management function network element defaults to the target connection.
  • the network access device has not updated the SRS configuration of the source access network device.
  • the target access network device sends the first SRS configuration information to the terminal device, after receiving the first SRS configuration information, the terminal device sends the SRS according to the first SRS configuration information, so that the access network can be measured. equipment to measure. If the target access network device continues to use the second SRS configuration information, the terminal device sends the SRS according to the second SRS configuration information.
  • steps S503 and S504 are optional steps, that is, steps S503 and S504 may not be executed.
  • the default target access network device uses the second SRS configuration information.
  • the location management function network element sends a second message to the measurement access network device.
  • the measurement access network device receives the second message from the location management function network element.
  • the function of the second message and the related description of measuring the access network device may refer to the foregoing step S403, which will not be repeated here.
  • the location management function network element also sends information about the TRP of the measurement access network device, such as a TRP list (list), to the measurement access network device.
  • the information of the TRP is used to indicate the TRP used to measure the SRS sent by the terminal device in the measurement access network device.
  • the location management function network element determines that the measurement access network device 1
  • the TRPs that can be used to measure the SRS sent by the terminal device are TRP1 and TRP2, and the TRP list may include the identifiers of TRP1 and TPR2, which are used to indicate that TRP1 and TRP2 measure the SRS sent by the terminal device.
  • the location management function network element may send information about the TRP of the access network device to the measurement access network device through a second message, that is, the second message includes the information of the TRP of the access network device; or, The information of the TRP of the measurement access network device may also be sent to the measurement access network device through a message other than the second message, which is not specifically limited in this embodiment of the present application.
  • the TRP for measuring the SRS of the terminal device can be indicated to the measuring access network device, so as to avoid the measuring access network device using all TRPs to measure the SRS and wasting the power consumption and resources of the measuring access network device.
  • the measurement access network device in step S505 may have the following situations:
  • the measurement access network device includes a first measurement access network device, and the first measurement access network device is an access network device that does not measure the SRS of the terminal device before the terminal device switches to the target cell. .
  • the measurement access network device determined by the location management function network element does not include the first measurement access network device.
  • the measurement access network devices are the measurement access network device 1 and the measurement access network device 2, and after the terminal device switches to the target cell, the measurement access network devices are the measurement access network devices.
  • the first measurement access network device is the measurement access network device 3 and the measurement access network device 4 .
  • the second message sent by the location management function network element to the first measurement access network device may be a measurement request (Measurement Request) message.
  • the second message may include the second SRS configuration information; or, when the target access network device does not use the second SRS configuration, that is, the target access network device determines In the case of the first SRS configuration information, the second message may include the first SRS configuration information.
  • the location management function network element may also send the second SRS configuration information or the first SRS configuration information to the first measurement access network device through other messages except the second message.
  • the measurement access network device includes a second measurement access network device, and the second measurement access network device is determined by the location management function network element for measurement before the terminal device switches to the target cell.
  • the measurement access network device determined by the location management function network element includes the second measurement access network device. That is to say, before the terminal device is handed over to the target cell and after the terminal device is handed over to the target cell, the second measurement access network device is used to measure the SRS sent by the terminal device.
  • the measurement access network devices are the measurement access network device 1 and the measurement access network device 2, and after the terminal device switches to the target cell, the measurement access network devices are the measurement access network devices.
  • the device 1 , the measurement access network device 3 , and the measurement access network device 4 , the second measurement access network device is the measurement access network device 1 .
  • the second message sent by the location management function network element to the second measurement access network device may be a measurement update (Measurement Update) message, which is used to update the SRS configuration and/or the TRP of the second measurement access network device list.
  • Measurement Update Measurement Update
  • the second message may not include the second SRS configuration information; or, when the target access network device does not use the second SRS configuration, that is, the target access network device When the first SRS configuration information is determined, the second message may include the first SRS configuration information.
  • the location management function network element may also send the first SRS configuration information or the second SRS configuration information to the first measurement access network device through other messages except the second message.
  • the second message may further include third indication information, where the third indication information is used to indicate the reporting granularity (reporting granularity) of the measurement amount of the SRS, the The reporting granularity can be understood as the difference between two adjacent reportable values in the reporting range.
  • the measurement of the SRS may be, for example, the relative time of arrival in UL-TDOA or the angle of arrival in UL-AOA.
  • the information element carrying the third indication information may be any one of the following: a time reporting granularity parameter (Timing Reporting Granularity Factor) information element, a timing reporting accuracy (Timing Reporting Accuracy) information element, a reporting granularity (Reporting granularity) information element. Granularity) cell, or time reporting granularity (Timing Reporting Granularity) cell.
  • a time reporting granularity parameter (Timing Reporting Granularity Factor) information element, a timing reporting accuracy (Timing Reporting Accuracy) information element, a reporting granularity (Reporting granularity) information element. Granularity) cell, or time reporting granularity (Timing Reporting Granularity) cell.
  • the information element may also have other names, and the embodiment of the present application does not specifically limit the name of the information element.
  • the reporting range of the SRS measurement quantity may be [-N ⁇ T c ,+N ⁇ T c ].
  • N and T c are positive integers.
  • k is a natural number, that is, k comes from the set of natural numbers ⁇ 0,1,2,3,4,5,... ⁇ .
  • the third indication information may be a value of k, such as 0, 1, 2, 3, 4, 5, and so on.
  • the information element carrying the third indication information may be the above-mentioned time reporting granularity parameter information element.
  • k can be called the time reporting granularity parameter.
  • the third indication information may be an identifier of k, such as k0, k1, k2, k3, k4, k5, etc., and the corresponding values of k are 0, 1, 2, 3, 4, and 5, respectively.
  • the information element carrying the third indication information may be a time reporting precision information element, a reporting granularity information element, or a time reporting granularity information element.
  • the third indication information may be the reporting granularity T of the measurement quantity.
  • the measurement access network device determines the reporting granularity T, it can select an appropriate value in the reporting range [-N ⁇ T c ,+N ⁇ T c ] according to T as the measurement amount for reporting.
  • the location management function network element may also send the third indication information to the measurement access network device through other messages except the second message.
  • the network element of the location management function can indicate the reporting granularity of the measurement quantity to the measurement access network device according to the requirements of the positioning service, such as the accuracy requirement, so as to ensure the accuracy of the measurement results and the positioning results, and improve the positioning accuracy.
  • the access network device measures the SRS sent by the terminal device, and obtains the measurement amount of the SRS.
  • the TRP indicated by the TRP information in step S506 measures the SRS sent by the terminal device.
  • this application allows some measurement access network devices in the multiple measurement access network devices to have measurement quantities that cannot obtain the SRS, for example, the part of the measurement access network devices.
  • the network access device cannot measure the SRS due to its own reasons.
  • the number of SRS measurement quantities is allowed to be smaller than the number of measurement access network devices.
  • the measurement access network device sends the measurement amount of the SRS to the location management function network element.
  • the location management function network element receives the measurement quantity of the SRS from the measurement access network device.
  • the measurement quantity may be the measurement quantity determined by the measurement access network device according to the reporting granularity.
  • step S508 may be performed.
  • the network element of the location management function determines the location of the terminal device after switching to the target cell according to the measurement amount of the SRS.
  • the source access network device can send the identification information of the target cell to the location management function network element, so that the location management function network element perceives the handover of the terminal device, and sends the target cell to the network element according to the identification of the target cell.
  • the measurement access network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can finally determine that the terminal device switches to the target cell according to the measurement amount reported by the measurement access network device. position, so as to complete the positioning, maintain the continuity of positioning, and improve the success rate of positioning.
  • the communication method may further include: the location management function network element sends the second message to the second measurement access network device.
  • the measurement access network device sends a notification message, where the notification message is used to notify the second measurement access network device to stop measuring the SRS.
  • the notification message is used to notify the second measurement access network device to stop measuring the SRS.
  • the location management function network element may send the second SRS configuration information to the first SRS configuration information when the target access network device does not use the second SRS configuration information, that is, the location management function network element receives the first SRS configuration information from the target access network device. 2.
  • the measurement access network device sends the notification message.
  • the location management function network element may first send the notification message to the measurement access network device 1, so that the measurement The access network device 1 stops measuring the SRS sent by the terminal device according to the second SRS configuration information. After that, a second message is sent to the measurement access network device 1 to request the measurement access network device 1 to measure the SRS sent by the terminal device according to the first SRS configuration information. At this time, the terminal device sends the SRS according to the first SRS configuration information.
  • the location management function network element can also be used to measure other measurement access network devices (for example, in step S505) before the terminal device switches to the target cell for measuring the SRS sent by the terminal device.
  • the measurement access network device 2 sends the notification message.
  • the measurement access network device used to measure the SRS sent by the terminal device can stop the measurement source access network device from configuring the SRS sent by the terminal device, and release the measurement access network device of these measurement access network devices. resources, reduce the impact on the service data transmission of the measurement access network equipment, improve the service performance of the measurement access network equipment, and also reduce the energy consumption of the measurement access network equipment.
  • the communication method may further include: the location management function network element sends fourth indication information to the target access network device, where the fourth indication information is used to indicate the target The access network equipment stops configuring SRS for the terminal equipment.
  • the location management function network element can locate successfully or end, for example, when the location of the terminal device is obtained, or when the location is stopped due to some reasons, or when it is informed that the terminal device has moved or switched. Next, send the fourth indication information to the target access network device.
  • the target access network device can be made to stop configuring SRS for the terminal device, and then the terminal device can be made to stop sending SRS according to the configuration of the target access network device, thereby releasing the resources of the terminal device and reducing the impact on the service performance of the terminal device. impact and the energy consumption of end equipment.
  • the communication method may include the following steps:
  • the source access network device sends positioning related information to the target access network device.
  • the target access network device receives the positioning related information from the source access network device.
  • the location-related information includes identification information of the location management function network element.
  • the identification information of the location management function network element may be a routing ID (Routing ID).
  • the positioning-related information also includes SRS information and/or fifth indication information, where the SRS information is used to indicate the transmission characteristics of the SRS, and the fifth indication information is used to instruct the target access network device to configure the SRS for the terminal device.
  • the fifth indication information may also be used to instruct the target access network device to send SRS configuration information to the location management function network element.
  • the positioning-related information may further include other information, for example, the location management function network element is performing the positioning service of the terminal device, and the like.
  • the SRS information may be information sent to the source access network device when the location management function network element requests the source access network device to configure the SRS for the terminal device before the terminal device switches to the target cell.
  • the information of the SRS may be the information included in the SRS transmission characteristics (SRS Transmission characteristics) information element of the location information request message sent by the location management function network element to the source access network device.
  • the source access network device may send the location-related information to the target access network device during the handover process of the terminal device.
  • the source access network device may carry the positioning related information in a handover request (Handover Request) message.
  • the source access network device may carry the positioning-related information in a Retrieve UE Context Response message.
  • the source access network device may send the UE context acquisition response (Retrieve UE Context Response message) in the following scenario, and carry positioning-related information in the Retrieve UE Context Response message:
  • the terminal device fails to access the first target cell designated by the source access network device, that is, the terminal device fails when handed over to the first target cell. Subsequently, the terminal device initiates re-establishment to the second target cell, so that the access network device to which the second target cell belongs sends a Retrieve UE Context Request message to the source access network device to obtain the context of the terminal device .
  • the source access network device After receiving the Retrieve UE Context Request message, the source access network device sends a Retrieve UE Context Response message to the access network device to which the second target cell belongs, and the Retrieve UE Context Response message carries the context of the terminal device related to the above positioning information. In addition, the source access network device may also release the context of the terminal device.
  • the Retrieve UE Context Request message sent by the access network device to which the second target cell belongs may include identification information of the target cell and the like.
  • the access network device to which the above-mentioned second target cell belongs is the target access network device in the embodiment of the present application.
  • this embodiment of the present application does not specifically limit the scenarios in which the source access network device receives the Retrieve UE Context Request message and sends the retrieve UE Context Response message, and the source access network device may receive or send the above-mentioned messages in other scenarios. corresponding message.
  • the target access network device determines that the terminal device is handed over to the target cell.
  • the target access network device determining that the terminal device switches to the target cell may include: when the target access network device receives an RRC reconfiguration complete message from the terminal device, determining that the terminal device switches to the target cell.
  • the target access network device sends a first message to the location management function network element.
  • the location management function network element receives the first message from the target access network device.
  • this step S603 may be triggered by the foregoing step S601. That is, after the target access network device receives the positioning related information sent by the source access network device, step S603 may be performed.
  • the target access network device sends the SRS configuration information or the second indication information to the location management function network element.
  • the target access network device when the target access network device does not use the second SRS configuration information after receiving the positioning-related information, that is, when the first SRS configuration information is determined, the first SRS configuration information may be sent to the location management function network element, At the same time, the target access network device may send the first SRS configuration information to the terminal device, so that the terminal device sends the SRS according to the first SRS configuration information; after the target access network device receives the positioning-related information, the second SRS configuration information is used.
  • the second indication information or the second SRS configuration information may be sent to the location management function network element.
  • the target access network device may send the SRS configuration information or the second indication information to the location management function network element through a Positioning Information Update message, or may send the SRS configuration to the location management function network element through other messages.
  • information or second indication information and this application does not specifically limit the name, type, or function of the message.
  • the target access network device when it subsequently updates the SRS configuration, it may send the updated SRS configuration to the location management function network element.
  • step S603 and the step S604 do not have a certain sequence, and the step S603 may be performed first, and then the step S604 may be performed. Alternatively, step S604 is performed first, and then step S603 is performed. Alternatively, step S603 and step S604 may be performed simultaneously, for example, the first message of step S603 includes SRS configuration information or second indication information.
  • the target access network device sends the first SRS configuration information to the terminal device, after receiving the first SRS configuration information, the terminal device sends the SRS according to the first SRS configuration information, so that the access network can be measured. equipment to measure. If the target access network device continues to use the second SRS configuration information, the terminal device sends the SRS according to the second SRS configuration information.
  • the message sent by the target access network device to the location management function network element may not include the second indication information and the second SRS configuration information.
  • the location management function network element By default, the target access network device does not update the SRS configured for the terminal device by the source access network device.
  • step S604 may not be performed, that is, step S604 is optional.
  • the location management function network element defaults that the target access network device does not update the SRS configured for the terminal device by the source access network device.
  • S605 to S608 are the same as steps S505 to S508 in the embodiment shown in FIG. 5 , and reference may be made to the above-mentioned related descriptions, which will not be repeated here.
  • the target access network device can send the identification information of the target cell to the location management function network element, so that the location management function network element perceives the handover of the terminal device, and sends the target cell to the network element according to the identification of the target cell.
  • the measurement access network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can determine that the terminal device switches to the target cell according to the measurement amount reported by the measurement access network device. position, so as to complete the positioning, maintain the continuity of positioning, and improve the success rate of positioning.
  • the communication method may further include: the location management function network element sends the second message to the second measurement access network device.
  • the measurement access network device sends a notification message, where the notification message is used to notify the second measurement access network device to stop measuring the SRS according to the second SRS configuration information.
  • the communication method may further include: the location management function network element sends fourth indication information to the target access network device, where the fourth indication information is used to indicate the target The access network equipment stops configuring SRS for the terminal equipment.
  • the communication method may include the following steps:
  • the mobility management function network element determines that the terminal device is handed over to the target cell.
  • step S701 the terminal device is switched, and before step S701 in FIG. 7 , some steps in the switching process are exemplarily shown, and the implementation of this application does not specifically limit the switching process.
  • the mobility management function network element determining that the terminal device is handed over to the target cell may include: when the mobility management function network element receives the fourth message from the target access network device, determining the terminal device by the mobility management function network element. Switch to the target cell.
  • the fourth message is used to request to switch the downlink data path of the terminal device to the target access network device.
  • the fourth message may be, for example, a path switch request (Path Switch Request) message.
  • the mobility management function network element sends a first message to the location management function network element.
  • the location management function network element receives the first message from the mobility management function network element.
  • the mobility management function network element can sense the handover of the terminal device, and thus can notify the location management function network element of the identity of the target cell after the handover.
  • S703 to S708 are the same as steps S503 to S508 in the embodiment shown in FIG. 5 , and reference may be made to the above-mentioned related descriptions, which will not be repeated here.
  • the mobility management function network element can send the identification information of the target cell to the location management function network element, so that the location management function network element can perceive the handover of the terminal device, and according to the identification of the target cell
  • the measurement access network device sends a second message to request the measurement access network device to measure the SRS of the terminal device, so that the location management function network element can determine that the terminal device switches to the target cell according to the measurement amount reported by the measurement access network device. position, so as to complete the positioning, maintain the continuity of positioning, and improve the success rate of positioning.
  • the communication method may further include: the location management function network element sends the second message to the second measurement access network device.
  • the measurement access network device sends a notification message, where the notification message is used to notify the second measurement access network device to stop measuring the SRS according to the second SRS configuration information.
  • the communication method may further include: the location management function network element sends fourth indication information to the target access network device, where the fourth indication information is used to indicate the target The access network equipment stops configuring SRS for the terminal equipment.
  • the embodiment of the present application further provides a communication method, and the communication method can be applied to the process of determining the location of the terminal device by network elements with various location management functions, as shown in FIG. 8 .
  • the communication method includes the following steps:
  • the location management function network element determines period information and/or frequency information of the SRS.
  • the period information is used to indicate the period of the SRS, and the period of the SRS may be understood as the period in which the terminal device sends the SRS.
  • the frequency information is used to indicate the frequency of the SRS, or used to indicate the frequency of the SRS carrier.
  • the frequency point can be represented by ARFCN.
  • the frequency point of the SRS may be the center frequency point of the bandwidth occupied by the SRS, or may be the starting frequency point of the bandwidth occupied by the SRS.
  • the bandwidth occupied by the SRS can also be understood as the SRS transmission bandwidth.
  • the frequency point of the SRS carrier may be the frequency point of the carrier center of the carrier, or may be the frequency point of point A of the carrier, or the like.
  • the bandwidth occupied by the SRS may be part or all of the bandwidth of the SRS carrier.
  • the location management function network element sends the period information and/or the frequency information to the serving access network device.
  • the serving access network device is the access network device to which the current serving cell of the terminal device belongs.
  • the location management function network element determines the period information of the SRS, in this step S802, the location management function network element sends the period information; in the case where the location management function network element determines the frequency information of the SRS, this step S802 , the location management function network element sends the frequency information.
  • the location management function network element may send the period information and/or the frequency information to the serving access network device through a Positioning Information Request (Positioning Information Request) message.
  • the period information and/or the frequency information may be included in the SRS transmission characteristics (SRS transmission characteristics) information element of the positioning information request (Positioning Information Request) message.
  • the location management function network element may also send the period information and/or frequency information to the serving access network device through other information elements in other messages, which is not specifically limited in this embodiment of the present application.
  • the serving access network device determines the SRS configuration information according to the period information and/or the frequency information.
  • the serving access network device configures the SRS for the terminal device according to the period information and/or the frequency information.
  • the serving access network device may configure the SRS for the terminal device according to the SRS period recommended by the location management function network element.
  • the period of the SRS of the terminal equipment is configured as the period recommended by the location management function network element, that is, the period of the SRS is configured as the period indicated by the period information; or, the period indicated by the period information is adjusted to obtain the adjusted period, Configure the period of the SRS as the adjusted period.
  • the serving access network device may configure the SRS for the terminal device according to the frequency point recommended by the location management function network element. For example, when the frequency information is used to indicate the frequency of the SRS, configure the frequency of the SRS as the frequency recommended by the location management function network element, that is, configure the frequency of the SRS as the frequency of the SRS indicated by the frequency information; or, A new frequency point is determined according to the frequency point of the SRS indicated by the frequency information, and the frequency point of the SRS is configured as the new frequency point.
  • the serving access network device configures the frequency point of the SRS as the frequency point on the carrier, or configures the SRS on the carrier.
  • the period of the SRS included in the SRS configuration information determined by the serving access network equipment may be the same or different from the period indicated by the location management function network element; similarly, the SRS configuration determined by the serving access network equipment
  • the frequency of the SRS included in the information may be the same as or different from the frequency indicated by the location management function network element.
  • the serving access network device sends the SRS configuration information to the location management function network element.
  • the location management function network element receives the SRS configuration information from the serving access network device.
  • the serving access network device also sends SRS configuration information to the terminal device. After receiving the SRS configuration information, the terminal equipment sends the SRS according to the SRS configuration information, so as to measure the access network equipment for measurement.
  • recommending the SRS cycle for the serving access network device can enable the serving access network device to make the serving access network device according to the cycle recommended by the location management function network element.
  • Periodically configure the period for the terminal equipment to send the SRS so that the period of the SRS configured by the serving access network equipment is close to or equal to the period of the SRS expected by the location management function network element.
  • the network element of the location management function recommends the period of the SRS, it can select an appropriate period to send to the serving access network device according to the delay requirement of the current positioning service, so as to control the measurement delay of the SRS through the transmission period of the SRS , and then control the time delay of the positioning service to meet the needs of the positioning service.
  • the location management function network element When the location management function network element sends frequency information to the serving access network device, the location management function network element can select the measurement access network device, and according to the selected frequency point supported by the measurement access network device, connect to the target The network device recommends (or indicates) the frequency used for SRS, so that the target access network device can configure the SRS for the terminal device according to the recommendation of the location management network element, so as to avoid the target access network device from configuring the SRS on other frequencies, resulting in The problem that the measurement access network equipment selected by the network element of the location management function cannot measure the SRS, the success rate of the SRS measurement is improved, and the positioning success rate is further improved.
  • the specific application scenarios of the communication method are not specifically limited in the embodiments of the present application. For example, it can be applied to the processes shown in FIG. 4 to FIG. 7 , and can also be applied to other positioning processes. The embodiment does not specifically limit this.
  • the embodiment of the present application further provides a communication method, which can be applied to the process of determining the location of a terminal device by network elements with various location management functions, as shown in FIG. 9 .
  • the communication method includes the following steps:
  • the network element of the location management function determines the reporting granularity (reporting granularity) of the measurement amount of the SRS.
  • the location management function network element sends indication information to the measurement access network device.
  • the measurement access network device receives the indication information from the location management function network element.
  • the indication information is used to indicate the reporting granularity of the measurement amount of the SRS.
  • the indication information is similar to the third indication information in the foregoing step S505, that is, the features of the third indication information in the foregoing step S505 may be applicable to the indication information, but it is not limited that the indication information only has the third indication information. feature. For related descriptions, reference may be made to the description in the foregoing step S505, which is not repeated here.
  • the location management function network element may send the indication information to the measurement access network device through a measurement request (Measurement Request) message, or may send the indication information to the measurement access network device through other messages. This is not specifically limited.
  • the access network device measures the SRS sent by the terminal device.
  • the measurement access network device sends the measurement amount determined according to the reported granularity to the location management function network element.
  • the location management function network element receives the measurement quantity from the measurement access network device.
  • the measurement access network device sends the SRS measurement quantity to the location management function network element according to the reporting granularity of the SRS measurement quantity.
  • the measurement access network device for the measurement access network device to report the measurement amount of the corresponding granularity according to the reporting granularity indicated by the location management function network element, reference may be made to the description in the above step S505, which will not be repeated here.
  • the network element of the location management function can indicate the reporting granularity of the measurement amount to the measurement access network device according to the requirements of the positioning service, such as accuracy requirements, so as to ensure the accuracy of the measurement results and positioning results, and improve the positioning accuracy.
  • the specific application scenarios of the communication method are not specifically limited in the embodiments of the present application. For example, it can be applied to the processes shown in FIG. 4 to FIG. 7 , and can also be applied to other positioning processes. The embodiment does not specifically limit this.
  • the embodiments of the present application further provide a communication method, which can be applied to the process of determining the location of a terminal device by network elements with various location management functions, as shown in FIG. 10 .
  • the communication method includes the following steps:
  • the location management function network element generates indication information.
  • the indication information is used to instruct to stop configuring the SRS for the terminal device.
  • the network element of the location management function can be located successfully, for example, when the location of the terminal device is obtained, or when the location is stopped due to some reasons, or when it is informed that the terminal device has moved or switched, Generate this instruction.
  • the location management function network element sends the indication information to the serving access network device.
  • the serving access network device is the access network device to which the current serving cell of the terminal device belongs; or, it may be the access network device to which the serving cell before the terminal device moves or is switched.
  • the serving access network device may stop configuring the SRS for the terminal device.
  • the serving access network device can be made to stop configuring SRS for the terminal device, and then the terminal device can be made to stop sending SRS according to the configuration of the serving access network device, thereby releasing the resources of the terminal device and reducing the impact on the service performance of the terminal device. impact and the energy consumption of end equipment.
  • the specific application scenarios of the communication method are not specifically limited in the embodiments of the present application. For example, it can be applied to the processes shown in FIG. 4 to FIG. 7 , and can also be applied to other positioning processes. The embodiment does not specifically limit this.
  • the location management function network element when the target access network device is composed of CU-DUs, the location management function network element sends a request message to the target access network device to request SRS configuration information.
  • the request message may be received by the CU of the target access network device, and then part or all of the information included in the request message (eg, period information and/or frequency information of the SRS) is sent to the DU of the target access network device.
  • the DU determines the SRS configuration according to some or all of the information, for example, determines the above SRS configuration information according to the period information and/or frequency information of the SRS, and sends the SRS configuration information to the CU.
  • the CU receives the SRS configuration information of the DU, it sends the information to the location management function.
  • the network element sends the SRS configuration information.
  • the DU can also send the SRS configuration information to the terminal device.
  • the location management function network element sends a request message to the measurement access network equipment to request the measurement access network equipment to measure the SRS of the terminal equipment.
  • part or all of the information included in the request message (for example, the reporting granularity of the SRS measurement amount, or the time reporting granularity parameter) is sent to the DU that measures the access network device.
  • the DU After measuring according to the part or all of the information, the DU returns the measured amount of the SRS (for example, the measured amount of the SRS is the measured amount corresponding to the reported granularity) to the CU, and then the CU returns the measured amount to the location management function network element.
  • the message type or message name carrying the information may be the same as the message type or message name exchanged between the CU and the location management function network element, or may be different, for example, the location
  • the message sent by the management function network element to the CU for requesting measurement is a measurement request (Measurement Request) message
  • the message sent by the CU to the DU based on the measurement request message may be a Positioning Measurement Request (Positioning Measurement Request) message.
  • each device may be invoked by the processor 301 in the communication apparatus 300 shown in FIG. 3 to call the application code stored in the memory 303 to instruct the communication device to execute.
  • each device (or network element) in the present application may perform some or all of the steps in the embodiments of the present application, these steps or operations are only examples, and the embodiments of the present application may also perform other An operation or a variant of various operations.
  • various steps may be performed in different orders presented in the embodiments of the present application, and it may not be necessary to perform all the operations in the embodiments of the present application.
  • the methods and/or steps implemented by various devices may also be implemented by components (eg, chips or circuits) available for the devices (or network elements).
  • an embodiment of the present application further provides a communication apparatus, where the communication apparatus is used to implement the above-mentioned various methods.
  • the communication device may be the location management function network element in the above method embodiments, or a device including the location management function network element, or a component that can be used for the location management function network element; or, the communication device may implement the above method.
  • the communication equipment in the example for example, the source access network equipment, the target access network equipment, or the mobility management function network element), or a device including the above communication equipment, or a component that can be used for the communication equipment.
  • the communication apparatus includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the communication device may be divided into functional modules according to the foregoing method embodiments.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 11 shows a schematic structural diagram of a communication device 110 .
  • the communication device 110 includes a receiving module 1101 and a sending module 1102 .
  • the receiving module 1101 may also be called a receiving unit to implement a receiving function, for example, a receiving circuit, a receiver, a receiver or a communication interface.
  • the sending module 1102 may also be called a sending unit to implement a sending function, for example, a sending circuit, a transmitter, a transmitter or a communication interface.
  • the communication device 110 may further include a processing module 1103 and a storage module 1104 (not shown in FIG. 11 ).
  • the storage module 1104 is used to store data and/or instructions, and the processing module 1103 can read the data or instructions in the storage module to implement the methods corresponding to the above-mentioned embodiments.
  • the receiving module 1101 and the sending module 1102 are respectively configured to perform the steps of receiving and sending performed by the location management function network element in the above method embodiments, and the processing module 1103 can be used to execute the location management function in the above method embodiments. Steps other than receive and transmit class steps performed by a network element.
  • the receiving module 1101 is configured to receive a first message from the communication device, the first message includes the identification information of the target cell; the sending module 1102 is configured to send a second message to the measurement access network device, where the second message is used to request The sounding reference signal SRS sent by the terminal equipment is measured, and the SRS is used to determine the position of the terminal equipment after switching to the target cell.
  • the receiving module 1101 is further configured to receive the measurement of the SRS; the processing module 1103 is configured to determine the position of the terminal device after switching to the target cell according to the measurement of the SRS.
  • the sending module 1102 is further configured to send the information of the transmission and reception point TRP of the measurement access network device to the measurement access network device, where the information of the TRP is used to indicate that the measurement access network device is used to measure the SRS. the TRP.
  • the receiving module 1101 is further configured to receive the first SRS configuration information from the target access network device, where the first SRS configuration information is used for the terminal device to send the SRS; the sending module 1102 is further configured to send the measurement The access network device sends the first SRS configuration information.
  • the receiving module 1101 is further configured to receive second indication information from the target access network device, where the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, the second SRS The configuration information is the SRS configuration information determined by the source access network device; the sending module 1102 is further configured to send the second SRS configuration information to the first measurement access network device.
  • the sending module 1102 is further configured to send a request message to the target access network device, where the request message is used to request the target access network device to configure the SRS for the terminal device, or to request SRS configuration information.
  • the sending module 1102 is further configured to send a notification message to the second measurement access network device, where the notification message is used to notify the second measurement access network device to stop measuring the SRS.
  • the sending module 1102 is further configured to send third indication information to the measurement access network device, where the third indication information is used to indicate the reporting granularity of the measurement amount of the SRS.
  • the sending module 1102 is further configured to send fourth indication information to the target access network device, where the fourth indication information is used to instruct the target access network device to stop configuring the SRS for the terminal device.
  • the processing module 1103 is used to determine the period information and/or frequency information of the SRS, the period information is used to indicate the period of the SRS, and the frequency information is used to indicate the frequency of the SRS or the frequency of the SRS carrier; the sending module 1102 , which is used to send the period information and/or frequency information to the serving access network device.
  • the processing module 1103 is used for determining the reporting granularity of the SRS measurement; the sending module 1102 is used for sending indication information to the measuring access network device, where the indication information is used to indicate the reporting granularity of the SRS measurement.
  • the processing module 1103 is used for generating indication information, where the indication information is used to instruct to stop configuring the SRS for the terminal device; the sending module 1102 is used for sending the indication information to the serving access network device.
  • each of the foregoing modules may be independently set or integrated, which is not limited in this embodiment of the present application.
  • the communication device 110 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the communication device 110 may take the form of the communication device 300 shown in FIG. 3 .
  • the processor 301 in the communication apparatus 300 shown in FIG. 3 may invoke the computer execution instructions stored in the memory 303 to cause the communication apparatus 300 to execute the communication method in the above method embodiment.
  • the function/implementation process of the receiving module 1101, the sending module 1102, or the processing module 1103 in FIG. 11 can be implemented by the processor 301 in the communication device 300 shown in FIG. 3 calling the computer execution instructions stored in the memory 303 to implement .
  • the function/implementation process of the processing module 1103 in FIG. 11 can be implemented by the processor 301 in the communication device 300 shown in FIG. 3 calling the computer to execute the instructions stored in the memory 303, the receiving module 1101 in FIG. 11 or sending
  • the function/implementation process of the module 1102 may be implemented through the communication interface 304 in the communication apparatus 300 shown in FIG. 3 .
  • the communication apparatus 110 provided in this embodiment can execute the above-mentioned communication method, the technical effect that can be obtained can be referred to the above-mentioned method embodiment, which is not repeated here.
  • FIG. 12 shows a schematic structural diagram of a communication device 120 .
  • the communication device 120 includes a processing module 1201 and a transceiver module 1202 .
  • the transceiver module 1202 which may also be called a transceiver unit, is used to implement sending and/or receiving functions, and may be, for example, a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the transceiver module 1202 may include a receiving module and a sending module, which are respectively used to perform the steps of receiving and sending performed by the communication device in the above method embodiments, and the processing module 1201 may be used to perform the above method embodiments by the communication device. Steps other than receive and transmit class steps performed by the device.
  • the processing module 1201 is used for determining that the terminal equipment is handed over to the target cell; the transceiver module 1202 is used for sending a first message to the location management function network element, where the first message includes the identification information of the target cell.
  • the communication device is a source access network device
  • the processing module 1201, configured to determine that the terminal device switches to the target cell may include: when the transceiver module 1202 receives a third message from the target access network device , the processing module 1201 is configured to determine that the terminal device is handed over to the target cell, and the third message is used to notify the communication device to release the context of the terminal device, or to request the communication device for the context of the terminal device.
  • the communication device may be a target access network device
  • the transceiver module 1202 is further configured to receive identification information and SRS information from the location management function network element of the source access network device, and the SRS information is used to indicate Transmission characteristics of SRS.
  • the transceiver module 1202 is further configured to send first SRS configuration information to the location management function network element, where the first SRS configuration information is used by the terminal device to send an SRS, and the SRS is used to determine the location of the terminal device.
  • the transceiver module 1202 is further configured to send second indication information to the location management function network element, where the second indication information is used to indicate that the target access network device has not updated the second SRS configuration information, the second SRS configuration information SRS configuration information determined for the source access network device.
  • the transceiver module 1202 is further configured to receive a request message from the location management function network element, where the request message is used to request the target access network device to configure the SRS for the terminal device, or to request SRS configuration information.
  • the communication device may be a mobility management function network element
  • the processing module 1201, configured to determine that the terminal device switches to the target cell may include: receiving a fourth message from the target access network device at the transceiver module 1202
  • the processing module 1201 is configured to determine that the terminal device is switched to the target cell, and the fourth message is used to request to switch the downlink data path of the terminal device to the target access network device.
  • the communication device 120 may further include a storage module (not shown in FIG. 12 ) for storing data and/or instructions, and the processing module 1201 may read the data or instructions in the storage module, so as to realize the corresponding correspondence of the above embodiments. Methods.
  • each of the foregoing modules may be independently set or integrated, which is not limited in this embodiment of the present application.
  • the communication device 120 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the communication device 120 may take the form of the communication device 300 shown in FIG. 3 .
  • the processor 301 in the communication apparatus 300 shown in FIG. 3 may invoke the computer execution instructions stored in the memory 303 to cause the communication apparatus 300 to execute the communication method in the above method embodiment.
  • the function/implementation process of the processing module 1201 and the transceiver module 1202 in FIG. 12 can be implemented by the processor 301 in the communication apparatus 300 shown in FIG. 3 calling the computer execution instructions stored in the memory 303 .
  • the function/implementation process of the processing module 1201 in FIG. 12 can be implemented by the processor 301 in the communication device 300 shown in FIG. 3 calling the computer execution instructions stored in the memory 303, and the function of the transceiver module 1202 in FIG.
  • the implementation process can be implemented through the communication interface 304 in the communication apparatus 300 shown in FIG. 3 .
  • the communication device 120 provided in this embodiment can execute the above-mentioned communication method, the technical effect that can be obtained can be referred to the above-mentioned method embodiment, which is not repeated here.
  • an embodiment of the present application further provides a communication apparatus (for example, the communication apparatus may be a chip or a chip system), where the communication apparatus includes a processor for implementing the method in any of the foregoing method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication apparatus to execute the method in any of the above method embodiments.
  • the memory may also not be in the communication device.
  • the communication device further includes an interface circuit, which is a code/data read/write interface circuit, and the interface circuit is used to receive computer-executed instructions (the computer-executed instructions are stored in the memory, and may be directly from memory read, or possibly through other devices) and transferred to the processor.
  • the communication device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.
  • an embodiment of the present application further provides a communication apparatus 130 .
  • the communication device 130 includes: a processor 1302 , a transceiver 1303 , and a memory 1301 .
  • the transceiver 1303 may be an independently set transmitter, and the transmitter may be used to send information to other devices.
  • the transceiver can also be a stand-alone receiver for receiving information from other devices.
  • the transceiver may also be a component that integrates the functions of sending and receiving information, and the specific implementation of the transceiver is not limited in this embodiment of the present application.
  • the communication device 130 may further include a bus 1304 .
  • the transceiver 1303, the processor 1302 and the memory 1301 can be connected to each other through a bus 1304; the bus 1304 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc.
  • the bus 1304 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 1303 may perform the steps of receiving and sending in the foregoing method embodiments.
  • the memory 1301 is used to store data and/or instructions, and the processor 1302 may read the data or instructions in the storage module to implement the methods corresponding to the foregoing embodiments.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium.
  • the usable media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state drive (SSD)), and the like.
  • the computer may include the aforementioned apparatus.

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Abstract

本申请提供通信方法、装置及系统，可以应用于切换场景下终端设备的定位，能够保持定位业务的连续性，提高定位成功率。该方法包括：通信设备确定终端设备切换至目标小区后，向位置管理功能网元发送第一消息，使得位置管理功能网元接收该第一消息，该第一消息包括目标小区的标识信息。收到第一消息后，位置管理功能网元向测量接入网设备发送第二消息，该第二消息用于请求测量终端设备发送的探测参考信号SRS，该SRS用于确定终端设备切换至目标小区后的位置。

Description

通信方法、装置及系统 技术领域
本申请涉及通信技术领域，尤其涉及通信方法、装置及系统。
背景技术
定位是第五代(5th generation，5G)(也称为新无线(new radio，NR))通信系统中的重要功能之一，第三代合作伙伴计划(3rd generation partnership project，3GPP)R16定义了包括上行定位的多种定位技术。其中，上行定位可以包括上行到达时间差(uplink time difference of arrival，UL-TDOA)定位和上行到达角(uplink angle of arrival，UL-AOA)定位。
在上行定位中，位置管理功能(location management function，LMF)网元请求终端的服务基站为终端配置探测参考信号(sounding reference signal，SRS)，并选择测量基站测量终端发送的SRS。测量基站进行测量后，向LMF网元上报SRS的测量量，以使LMF网元根据该测量量确定终端的位置。其中，测量基站通常包括终端设备的服务基站或邻区基站。此外，LMF网元可以配置测量基站周期性测量终端的SRS并上报测量测量。
实际应用中，终端可能会发生移动并切换至其他小区，此时，若终端的定位业务还未结束，LMF网元在终端发生切换之前选择的测量基站可能无法继续测量到终端的SRS，从而导致定位失败。
发明内容
本申请实施例提供通信方法、装置及系统，可以保持定位业务的连续性，提高定位成功率。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供一种通信方法，该通信方法包括：位置管理功能网元接收来自通信设备的第一消息，该第一消息包括目标小区的标识信息；位置管理功能网元向测量接入网设备发送第二消息，该第二消息用于请求测量终端设备发送的探测参考信号SRS，该SRS用于确定终端设备切换至目标小区后的位置。
基于该方案，在终端设备发生切换后，位置管理功能网元可以收到来自通信设备的目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元根据第一消息确定测量接入网设备。基于该可能的设计，可以使得位置管理功能网元在终端设备切换至目标小区后根据目标小区的标识确定测量接入网设备。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元接收该SRS的测量量，并根据该SRS的测量量，确定该终端设备切换至该目标小区后的位置。基于该可能的设计，可以使得位置管理功能网元根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
在一些可能的设计中，第一消息还包括第一指示信息，该第一指示信息用于指示终端设备发生切换。基于该可能的设计，可以使得位置管理功能网元感知到终端设备的切换。
在一些可能的设计中，该通信方法还可以包括：位置管理网元向测量接入网设备发送该测量接入网设备的传输接收点TRP的信息，该TRP的信息用于指示该测量接入网设备中用于测量SRS的TRP。基于该可能的设计，可以向测量接入网设备指示测量SRS的TRP，避免测量接入网设备使用全部TRP测量SRS，浪费测量接入网设备的功耗和资源。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元接收来自目标接入网设备的第一SRS配置信息，该第一SRS配置信息用于终端设备发送该SRS；该位置管理功能网元向测量接入网设备发送该第一SRS配置信息。
在一些可能的设计中，测量接入网设备包括第一测量接入网设备，该第一测量接入网设备为终端设备切换至目标小区之前，未测量该终端设备的SRS的接入网设备；该通信方法还可以包括：位置管理功能网元接收来自目标接入网设备的第二指示信息，该第二指示信息用于指示该目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息；该位置管理功能网元向该第一测量接入网设备发送该第二SRS配置信息。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送请求消息，该请求消息用于请求目标接入网设备为终端设备配置SRS，或者说，该请求消息用于请求SRS配置信息。
在一些可能的设计中，该请求消息包括该SRS的周期信息和/或该SRS的频率信息，该周期信息用于指示该SRS的周期，该频率信息用于指示该SRS的频点或，用于指示SRS载波的频点。
基于该可能的设计，位置管理功能网元在请求消息中携带周期信息，为目标接入网设备推荐SRS的周期，可以使得目标接入网设备根据位置管理功能网元推荐的该周期配置终端设备发送SRS的周期，从而使得目标接入网设备配置的SRS的周期接近或等于位置管理功能网元期望的SRS的周期，进而使得位置管理功能网元通过SRS的发送周期控制SRS的测量时延，以控制定位业务的时延，满足定位业务的需求。
基于该可能的设计，在位置管理功能网元在请求消息中携带频率信息时，位置管理功能网元可以向目标接入网设备推荐(或指示)用于SRS的频点，使得目标接入网设备可以根据位置管理网元的推荐为终端设备配置SRS，从而避免目标接入网设备在其他频点上配置SRS，导致位置管理功能网元选择的测量接入网设备无法测量SRS的问题，提高SRS测量的成功率，进而提高定位成功率。
在一些可能的设计中，测量接入网设备包括第二测量接入网设备，该第二测量接入网设备为终端设备切换至该目标小区之前，用于测量该终端设备的SRS的接入网设备；在位置管理功能网元向第二测量接入网设备发送第二消息之前，该通信方法还可以包括：位置管理功能网元向该第二测量接入网设备发送通知消息，该通知消息用于通知该第二测量接入网设备停止测量SRS。也就是说，位置管理功能网元可以先指示第二测量接入网设备停止根据终端设备切换前的SRS配置进行测量，再请求第二测量接入网设备根据终端设备切换后的SRS配置进行测量。
可以理解的是，位置管理功能网元可以目标接入网设备未沿用第二SRS配置信息，即位置管理功能网元收到来自目标接入网设备的第一SRS配置信息的情况下，向第二测量接入网设备发送该通知消息。
基于该可能的设计，可以使得第二测量接入网设备停止测量源接入网设备配置的SRS，释放这些测量接入网设备的测量资源，降低其能耗。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送第三指示信息，该第三指示信息用于指示SRS的测量量的上报颗粒度。
基于该可能的设计，位置管理功能网元可以向测量接入网设备指示测量量的上报颗粒度，从而保证测量结果和定位结果的精度，提高定位准确性。
在一些可能的设计中，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送第四指示信息，该第四指示信息用于指示目标接入网设备停止为终端设备配置SRS。
基于该可能的设计，可以使得目标接入网设备停止为终端设备配置SRS，进而可以使得终端设备停止根据目标接入网设备的配置发送SRS，从而释放终端设备的资源，降低对终端设备的业务性能的影响以及终端设备的能耗。
第二方面，提供一种通信方法，该通信方法包括：通信设备确定终端设备切换至目标小区；通信设备向位置管理功能网元发送第一消息，该第一消息包括目标小区的标识信息。
基于该方案，在终端设备发生切换后，通信设备可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
在一些可能的设计中，该第一消息还包括第一指示信息，该第一指示信息用于指示终端设备发生切换。
在一些可能的设计中，该通信设备为源接入网设备，该通信设备确定终端设备切换至目标小区，可以包括：在源接入网设备接收到来自目标接入网设备的第三消息的情况下，源接入网设备确定终端设备切换至该目标小区，第三消息用于通知该源接入网设备释放该终端设备的上下文，或者用于向该源接入网设备请求该终端设备的上下文。
在一些可能的设计中，该通信设备为目标接入网设备，在该目标接入网设备向该位置管理功能网元发送第一消息之前，该通信方法还包括：该目标接入网设备接收来自源接入网设备的该位置管理功能网元的标识信息和探测参考信号SRS的信息，该SRS的信息用于指示该SRS的传输特性。
在一些可能的设计中，该通信方法还可以包括：目标接入网设备向该位置管理功能网元发送第一SRS配置信息，该第一SRS配置信息用于该终端设备发送SRS，该SRS用于确定该终端设备的位置。
在一些可能的设计中，该通信方法还可以包括：目标接入网设备向该位置管理功能网元发送第二指示信息，该第二指示信息用于指示目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息。
在一些可能的设计中，该通信方法还可以包括：目标接入网设备接收来自位置管理功能网元的请求消息，该请求消息用于请求SRS配置信息。
在一些可能的设计中，该请求消息包括SRS的周期信息和/或SRS的频率信息，该周期信息用于指示SRS的周期，该频率信息用于指示SRS的频点，或者用于指示SRS载波的频点。
在一些可能的设计中，该通信设备为移动管理功能网元，该通信设备确定终端设备切换至目标小区，可以包括：在移动管理功能网元接收到来自目标接入网设备的第四消息的情况下，该移动管理功能网元确定终端设备切换至该目标小区，该第四消息用于请求将终端设备的下行数据路径切换至目标接入网设备。
第三方面，提供一种通信方法，该通信方法包括：位置管理功能网元确定SRS的周期信息和/或频率信息，该周期信息用于指示SRS的周期，该频率信息用于指示SRS的频点或者指示用于传输SRS的载波的频点；位置管理功能网元向服务接入网设备发送该周期信息和/或频率信息。其中，服务接入网设备可以为终端设备当前的服务小区所属的接入网设备。
基于该方案，位置管理功能网元向服务接入网设备发送周期信息，为服务接入网设备推荐SRS的周期，可以使得服务接入网设备根据位置管理功能网元推荐的该周期配置终端设备发送SRS的周期，从而使得服务接入网设备配置的SRS的周期接近或等于位置管理功能网元期望的SRS的周期，进而使得位置管理功能网元通过SRS的发送周期控制SRS的测量时延，以控制定位业务的时延，满足定位业务的需求。
基于该方案，位置管理功能网元向服务接入网设备发送频率信息，可以向目标接入网设备推荐(或指示)用于SRS的频点，使得服务接入网设备可以根据位置管理网元的推荐为终端设备配置SRS，从而避免服务接入网设备在其他频点上配置SRS，导致位置管理功能网元选择的测量接入网设备无法测量SRS的问题，提高SRS测量的成功率，进而提高定位成功率。
第四方面，提供一种通信方法，该通信方法包括：位置管理功能网元确定SRS的测量量的上报颗粒度；位置管理功能网元向测量接入网设备发送指示信息，该指示信息用于指示该SRS的测量量的上报颗粒度。
基于该方案，位置管理功能网元可以向测量接入网设备指示测量量的上报颗粒度，从而保证测量结果和定位结果的精度，提高定位准确性。
第五方面，提供一种通信方法，该通信方法包括：位置管理功能网元生成指示信息，该指示信息用于指示停止为终端设备配置SRS；位置管理功能网元向服务接入网设备发送该指示信息。
基于该方案，可以使得目标接入网设备停止为终端设备配置SRS，进而可以使得终端设备停止根据目标接入网设备的配置发送SRS，从而释放终端设备的资源，降低对终端设备的业务性能的影响以及终端设备的能耗。
第六方面，提供一种通信方法。该通信方法包括：通信设备确定终端设备切换至目标小区；并向位置管理功能网元发送第一消息，该第一消息包括目标小区的标识信息。位置管理功能网元接收来自通信设备的该第一消息，并向测量接入网设备发送第二消息，该第二消息用于请求测量终端设备发送的探测参考信号SRS，该SRS用于确定终端设备切换至目标小区后的位置。
第七方面，提供了一种通信装置用于实现上述各方面方法的任意一种。一些实现方式中，该通信装置可以为上述第一方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。所述通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
一种实施场景下，该通信装置可以为上述位置管理功能网元，该通信装置包括接收模块和发送模块。可选的，该通信装置还可以包括处理模块。
该实施场景的一种实现方式中：
该接收模块，用于接收来自通信设备的第一消息，该第一消息包括目标小区的标识信息；该发送模块，用于向测量接入网设备发送第二消息，该第二消息用于请求测量该终端设备发送的探测参考信号SRS，该SRS用于确定该终端设备切换至该目标小区后的位置。
一些可能的设计中，接收模块，还用于接收该SRS的测量量；处理模块，用于根据该SRS的测量量，确定终端设备切换至目标小区后的位置。
一些可能的设计中，发送模块，还用于向测量接入网设备发送测量接入网设备的传输接收点TRP的信息，该TRP的信息用于指示该测量接入网设备中用于测量该SRS的TRP。
一些可能的设计中，接收模块，还用于接收来自目标接入网设备的第一SRS配置信息，该第一SRS配置信息用于该终端设备发送该SRS；发送模块，还用于向该测量接入网设备发送该第一SRS配置信息。
一些可能的设计中，接收模块，还用于接收来自目标接入网设备的第二指示信息，该第二指示信息用于指示该目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息；发送模块，还用于向该第一测量接入网设备发送该第二SRS配置信息。
一些可能的设计中，发送模块，还用于向目标接入网设备发送请求消息，该请求消息用于请求目标接入网设备为终端设备配置SRS，或者说，用于请求SRS配置信息。
一些可能的设计中，发送模块，还用于向第二测量接入网设备发送通知消息，该通知消息用于通知第二测量接入网设备停止测量SRS。
一些可能的设计中，发送模块，还用于向测量接入网设备发送第三指示信息，该第三指示信息用于指示该SRS的测量量的上报颗粒度。
一些可能的设计中，发送模块，还用于向目标接入网设备发送第四指示信息，该第四指示信息用于指示该目标接入网设备停止为该终端设备配置SRS。
该实施场景的另一种实现方式中：
处理模块，用于确定SRS的周期信息和/或频率信息，该周期信息用于指示SRS的周期，该频率信息用于指示SRS的频点或用于指示SRS载波的频点；发送模块，用于向服务接入网设备发送该周期信息和/或频率信息。
该实施场景的又一种实现方式中：
处理模块，用于确定SRS的测量量的上报颗粒度；发送模块，用于向测量接入网设备发送指示信息，该指示信息用于指示该SRS的测量量的上报颗粒度。
该实施场景的再一种实现方式中：
处理模块，用于生成指示信息，该指示信息用于指示停止为终端设备配置SRS；发送模块，用于向服务接入网设备发送该指示信息。
一种实施场景下，该通信装置可以为上述位置管理功能网元，该通信装置包括处理模块和收发模块。
其中，处理模块，用于确定终端设备切换至目标小区；收发模块，用于向位置管理功能网元发送第一消息，该第一消息包括目标小区的标识信息。
一些可能的设计中，该通信装置为源接入网设备，处理模块，用于确定终端设备切换至目标小区，可以包括：在收发模块接收到来自目标接入网设备的第三消息的情况下，处理模块，用于确定终端设备切换至目标小区，该第三消息用于通知该通信装置释放终端设备的上下文，或者用于向该通信装置请求终端设备的上下文。
一些可能的设计中，该通信装置可以为目标接入网设备，收发模块，还用于接收来自源 接入网设备的位置管理功能网元的标识信息和SRS的信息，该SRS的信息用于指示SRS的传输特性。
一些可能的设计中，收发模块，还用于向位置管理功能网元发送第一SRS配置信息，该第一SRS配置信息用于该终端设备发送SRS，该SRS用于确定该终端设备的位置。
一些可能的设计中，收发模块，还用于向位置管理功能网元发送第二指示信息，该第二指示信息用于指示目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息。
一些可能的设计中，收发模块，还用于接收来自位置管理功能网元的请求消息，该请求消息用于请求SRS配置信息。
一些可能的设计中，该通信装置可以为移动管理功能网元，处理模块，用于确定终端设备切换至目标小区，可以包括：在收发模块接收到来自目标接入网设备的第四消息的情况下，处理模块，用于确定终端设备切换至目标小区，该第四消息用于请求将终端设备的下行数据路径切换至目标接入网设备。
第八方面，提供了一种通信装置，包括：存储器和至少一个处理器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行上述任一方面所述的方法。一些实现方式中，该通信装置可以为上述第一方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。
第九方面，提供了一种通信装置，包括：接口电路和至少一个处理器，该接口电路可以为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器；该处理器用于运行所述计算机执行指令以执行上述任一方面所述的方法。一些实现方式中，该通信装置可以为上述第一方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。
第十方面，提供了一种通信装置，包括：至少一个处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述任一方面所述的方法。一些实现方式中，该通信装置可以为上述第一方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。
第十一方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。一些实现方式中，该通信装置可以为上述第一方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。
第十二方面，提供了一种包含指令的计算机程序产品，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。一些实现方式中，该通信装置可以为上述第一 方面或第三方面或第四方面或第五方面中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者上述位置管理功能网元中包含的装置，比如芯片；或者，又一些实现方式中，该通信装置可以为上述第二方面中的通信设备，或者包含上述通信设备的装置，或者上述通信设备中包含的装置。
第十三方面，提供了一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括至少一个处理器，用于实现上述任一方面中所涉及的功能。在一种可能的设计中，该通信装置还包括存储器，该存储器，用于保存必要的程序指令和/或数据。该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
第十四方面，提供一种通信系统，该通信系统包括上述方面所述的位置管理功能网元以及上述方面所述的通信设备。
其中，该通信设备，用于确定终端设备切换至目标小区；并向位置管理功能网元发送第一消息，该第一消息包括目标小区的标识信息。位置管理功能网元，用于接收来自通信设备的该第一消息，位置管理功能网元，还用于向测量接入网设备发送第二消息，该第二消息用于请求测量终端设备发送的探测参考信号SRS，该SRS用于确定终端设备切换至目标小区后的位置。
其中，第六方面至第十四方面中任一种设计方式所带来的技术效果可参见上述第一方面或第二方面或第三方面或第四方面或第五方面中不同设计方式所带来的技术效果，此处不再赘述。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
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图5为本申请实施例提供的一种通信设备为源接入网设备场景下的通信方法的流程示意图；
图6为本申请实施例提供的一种通信设备为目标接入网设备场景下的通信方法的流程示意图；
图7为本申请实施例提供的一种通信设备为移动管理功能网元场景下的通信方法的流程示意图；
图8为本申请实施例提供的一种通信方法的流程示意图二；
图9为本申请实施例提供的一种通信方法的流程示意图三；
图10为本申请实施例提供的一种通信方法的流程示意图四；
图11为本申请实施例提供的一种通信装置的结构示意图；
图12为本申请实施例提供的另一种通信装置的结构示意图；
图13为本申请实施例提供的又一种通信装置的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在 三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
此外，本申请实施例提供的定位请求处理方法可适用于多种系统架构。本申请实施例描述的网络架构以及业务场景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，随着网络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。
如图1a所示，为本申请实施例适用的一种通信系统10，该通信系统10包括通信设备101和位置管理功能网元102。可选的，该通信系统10还可以包括测量接入网设备103。
其中，通信设备101和位置管理功能网元102之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不做具体限定。
其中，通信设备101可以为源接入网设备、目标接入网设备、或移动管理功能网元中的一个。其中，测量接入网设备是指能够根据位置管理功能网元的请求测量终端设备的SRS的接入网设备，本实施对其名称不做具体限定，在实际应用中，测量接入网设备还可以有其他名称。
本申请实施例中：
通信设备101，用于确定终端设备切换至目标小区；并向位置管理功能网元102发送第一消息，该第一消息包括目标小区的标识信息。
位置管理功能网元102，用于接收来自通信设备的该第一消息。
位置管理功能网元102，还用于向测量接入网设备103发送第二消息，该第二消息用于请求测量终端设备发送的探测参考信号SRS，该SRS用于确定终端设备切换至目标小区后的位置。
本申请实施例提供的通信系统中，在终端设备发生切换后，通信设备可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
如图1b所示，为本申请实施例适用的另一种可能的通信系统20，该通信系统20除了可以包括图1a中的位置管理功能网元102、测量接入网设备103外，还可以包括终端设备201、源接入网设备202、目标接入网设备203、移动管理功能网元204。源接入网设备202为源小区所属的接入网设备，目标接入网设备203为目标小区所属的接入网设备。
本申请实施例中，以终端设备发生切换前与源接入网设备202保持连接，发生切换后与目标接入网设备203保持连接为例进行说明。
其中，源接入网设备202、目标接入网设备203、移动管理功能网元204中任一项可以作为图1a中的通信设备101。
本申请实施例中：
位置管理功能网元102，除了具备上述功能，还可以用于定位业务的定位请求管理、定位资源调配、获取终端设备的位置信息，并将位置信息返回给相关网元等。在5G通信系统中，位置管理功能网元102所对应的网元或者实体可以为5G网络架构中的位置管理功能(location management function，LMF)网元。Nlmf是LMF网元提供的基于服务的接口，LMF网元可以通过Nlmf与其他的网络功能通信。在未来通信如第六代通信(the 6th generation，6G)系统中，位置管理功能网元102仍可以是LMF网元，或者位置管理功能网元102有其它名称，本申请实施例对此不作限定。
终端设备201，可以是用于实现无线通信功能的设备，例如终端或者可用于终端中的芯片等。其中，终端可以是5G网络或者未来演进的PLMN中的用户设备(user equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备或可穿戴设备，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、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
移动管理功能网元204，可以用于移动网络中的移动性管理，如用户位置更新、用户注册网络、用户切换等。在5G通信系统中，移动管理功能网元204所对应的网元或者实体可以为5G网络架构中的接入与移动性管理功能(access and mobility management function，AMF)网元。Namf是AMF网元提供的基于服务的接口，AMF网元可以通过Namf与其他的网络功能通信，在未来通信如第六代通信(the 6th generation，6G)系统中，移动管理功能网元204仍可以是AMF网元，或者移动管理功能网元204有其它名称，本申请实施例对此不作限定。
接入网设备(包括源接入网设备202、目标接入网设备203、以及测量接入网设备103)，是一种为终端设备提供无线通信功能的设备。接入设备例如包括但不限于：5G中的下一代基站(gnodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseBand unit，BBU)、发射点(transmitting point，TP)、移动交换中心等。可选的，本申请实施例中的基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，接入点等，本申请实施例对此不作具体限定。
一种可能的方式中，本申请实施例中的接入网设备可以包括一个或多个传输接收点(transmitting and receiving point，TRP)。
一种可能的方式中，本申请实施例中的接入网设备可以由集中单元(central unit，CU)和一个或多个分布式单元(distributed unit，DU)组成。
CU和DU可以理解为是对接入网设备从逻辑功能角度的划分。其中，CU和DU在物理上可以是分离的，也可以部署在一起，本申请实施例对此不做具体限定。CU和DU之间可以通过接口相连，例如可以是F1接口。CU和DU可以根据无线网络的协议层划分。例如，无线资源控制(radio resource control，RRC)协议层、业务数据适配协议栈(service data adaptation  protocol，SDAP)协议层以及分组数据汇聚层协议(packet data convergence protocol，PDCP)协议层的功能设置在CU中，而无线链路控制(radio link control，RLC)协议层，媒体接入控制(media access control，MAC)协议层，物理(physical，PHY)协议层等的功能设置在DU中。可以理解，对CU和DU处理功能按照这种协议层的划分仅仅是一种举例，也可以按照其他的方式进行划分，本申请实施例对此不做具体限定。
可选的，CU可以由CU控制面(CU control plane，CU-CP)和CU用户面(CU user plane，CU-UP)组成，CU-CP和CU-UP可以理解为是对CU从逻辑功能的角度进行划分。其中，CU-CP和CU-UP可以根据无线网络的协议层划分，例如，RRC协议层和信令无线承载(signal radio bearer，SRB)对应的PDCP协议层的功能设置在CU-CP中，数据无线承载(data radio bearer，DRB)对应的PDCP协议层的功能设置在CU-UP中，此外，SDAP协议层的功能也可能设置在CU-UP中。
可选的，TRP可以部署于DU中，或者说，TRP是DU中的部件。
可选的，图1a或图1b所示的通信系统可以应用于目前的4G网络、4.5G网络、5G网络以及未来其它的网络，本申请实施例对此不作具体限定。
其中，若图1a或图1b所示的通信系统应用于目前的5G网络，则如图2所示，该网络架构可以包括上述终端设备、源gNB、目标gNB、测量gNB、AMF网元、LMF网元。此外，还可以包括会话管理功能(session management function，SMF)网元、用户平面功能(user plane function，UPF)网元、统一数据管理(unified data management，UDM)网元、网络开放功能(network exposure function，NEF)网元、认证服务器功能(authentication server function，AUSF)网元、网络切片选择功能(network slice selection function，NSSF)网元、网络功能存储功能(network exposure function Repository Function，NRF)网元、或策略控制功能(policy control function，PCF)网元、统一数据存储(unified data repository，UDR)网元、非结构化数据存储功能(unstructured data storage function，UDSF)等，本申请实施例对此不作具体限定。
可以理解的是，图2中终端设备可以通过N1接口与AMF网元通信，N1接口可以理解为终端设备和AMF网元之间的参考点；测量gNB、目标gNB也可以通过N3接口与UPF网元通信。
其中，图2中的N2接口为gNB和AMF网元的参考点，用于非接入层(non-access stratum，NAS)消息和下一代应用协议(next generation application protocol，NGAP)消息的发送等；N3接口为gNB和UPF网元的参考点，用于传输用户面的数据等；N4接口为SMF和UPF之间的参考点，用于传输例如N3连接的隧道标识信息，数据缓存指示信息，以及下行数据通知消息等信息；N6接口为UPF网元和数据网络(data network，DN)之间的参考点，用于传输用户面的数据等。
此外，图2所示的AUSF网元、AMF网元、SMF网元、LMF网元、NSSF网元、NEF网元、NRF网元、PCF网元、UDM网元、UDR网元、或者UDSF网元等控制面网元也可以采用服务化接口进行交互。比如，AUSF网元对外提供的服务化接口可以为Nausf；AMF网元对外提供的服务化接口可以为Namf；SMF网元对外提供的服务化接口可以为Nsmf；NSSG网元对外提供的服务化接口可以为Nnssf；NEF网元对外提供的服务化接口可以为Nnef；NRF网元对外提供的服务化接口可以为Nnrf；PCF网元对外提供的服务化接口可以为Npcf；UDM网元对外提供的服务化接口可以为Nudm。相关描述可以参考23501标准中的5G系统架构(5G system architecture)图，在此不予赘述。
可以理解的是，上述网元或功能既可以是硬件设备中的网络元件，也可以是在专用硬件 上运行软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。上述网元或功能可划分出一个或多个服务，进一步，还可能会出现独立于网络功能存在的服务。在本申请中，上述功能的实例、或上述功能中包括的服务的实例、或独立于网络功能存在的服务实例均可称为服务实例。
例如，上述网元或功能可以通过图3中的通信装置来实现。图3所示为本申请实施例提供的通信装置300的硬件结构示意图。该通信装置300包括处理器301，通信线路302以及至少一个通信接口(图3中仅是示例性的以包括通信接口304为例进行说明)。可选的，该通信装置还可以包括存储器303。
处理器301可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路302可包括一通路，在上述组件之间传送信息。
通信接口304，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器303可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路302与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器303用于存储执行本申请方案的计算机执行指令，并由处理器301来控制执行。处理器301用于执行存储器303中存储的计算机执行指令，从而实现本申请下述实施例提供的通信方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器301可以包括一个或多个CPU，例如图3中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置300可以包括多个处理器，例如图3中的处理器301和处理器308。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信装置300还可以包括输出设备305和输入设备306。输出设备305和处理器301通信，可以以多种方式来显示信息。例如，输出设备305可以是液晶显示器(liquid crystal display，LCD)，发光二极管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备306和处理器301通信，可以以多种方式接收用户的输入。例如，输入设备306可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的通信装置300可以是一个通用设备或者是一个专用设备。
下面将结合图1a至图3，通过具体实施例对本申请实施例提供的通信方法进行展开说明。
需要说明的是，本申请下述实施例中各个设备(或网元)之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
本申请下述实施例中，假设终端设备切换至目标小区前，位置管理功能网元有获取终端设备的位置的需求，且直至终端设备成功接入目标小区的时刻，位置管理功能网元还未成功获取到终端设备的位置；或者，位置管理功能网元需周期性持续获取终端设备的位置，且直至终端设备成功接入目标小区的时刻，该周期性定位还未结束。
可以理解的，上述假设仅是对本申请实施例的适用场景的示例性说明，不对本申请构成任何限定。
如图4所示，为本申请实施例提供的通信方法，该通信方法可以应用于图1a所示的通信系统，该通信方法包括如下步骤：
S401、通信设备确定终端设备切换至目标小区。
可选的，终端设备切换至目标小区可以指：终端设备成功接入到目标小区，或者终端设备成功切换至目标小区，或者终端设备完成从源小区至目标小区的切换。
其中，通信设备可以为源接入网设备、目标接入网设备、或移动管理功能网元中的一个。目标接入网设备为该目标小区所属的接入网设备，或者说，目标接入网设备为管理该目标小区的接入网设备。源接入网设备为终端设备切换至目标小区之前的服务接入网设备，移动管理功能网元为服务于该终端设备的移动管理功能网元。
可以理解的，在切换过程中，目标接入网设备可以向源接入网设备和移动管理功能网元发送目标小区的相关信息，例如，目标接入网设备在切换请求确认(Handover Request ACK)消息中向源接入网设备发送目标小区的相关信息；或者在路径切换请求(Path Switch Request)消息中向移动管理网元发送该目标小区的相关信息。
可选的，该目标小区的相关信息例如可以包括：目标小区的标识信息、目标小区的系统信息、终端设备在目标小区中的标识、随机接入信道(random access channel，RACH)资源等。
S402、通信设备向位置管理功能网元发送第一消息。相应的，位置管理功能网元接收来自该通信设备的第一消息。
其中，该第一消息用于指示终端设备切换至目标小区。
其中，该第一消息包括目标小区的标识信息。该目标小区的标识信息例如可以为目标小区的CGI，或者为目标小区的频点和物理小区标识(physical cell identifier，PCI)，或者为其他可以用于唯一标识目标小区的标识，本申请实施例对此不做具体限定。
可选的，该第一消息还可以包括第一指示信息，该第一指示信息用于指示终端设备发生切换。
S403、位置管理功能网元向测量接入网设备发送第二消息。相应的，测量接入网设备接收来自位置管理功能网元的第二消息。
其中，该第二消息用于请求测量终端设备发送的SRS，该SRS用于确定该终端设备切换至目标小区后的位置。
需要说明的是，该步骤S403中，不限定仅有一个测量接入网设备，即位置管理功能网元可以向多个测量接入网设备发送该第二消息。
可选的，位置管理功能网元接收到第一消息后，可以根据第一消息包括的目标小区的标 识信息，重新确定(或选择)测量接入网设备。在确定测量接入网设备后，向测量接入网设备发送该第二消息。
可选的，位置管理功能网元根据目标小区的标识信息确定的测量接入网设备可以包括以下至少一种：目标小区的相邻小区所属的接入网设备、目标小区所属的接入网设备，即目标接入网设备。
基于该方案，在终端设备发生切换后，通信设备可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
下面，以上述通信设备分别为源接入网设备、目标接入网设备、以及移动管理功能网元对图4所示的方法进行详细介绍，此时，本申请提供的通信方法可以应用于图1b或图2所示的通信系统。
首先，在上述通信设备为源接入网设备的情况下，如图5所示，该通信方法可以包括如下步骤：
S501、源接入网设备确定终端设备切换至目标小区。
可以理解的是，在该步骤S501之前，终端设备发生了切换，图5中步骤S501之前示例性的示出了切换流程中的部分步骤，本申请实施对切换流程不做具体限定。
可选的，该步骤S501也可以理解为：源接入网设备确定终端设备成功接入目标小区，或者，源接入网设备确定终端设备成功切换至目标小区，或者源接入网设备确定终端设备成功从源小区切换至目标小区。
可选的，源接入网设备确定终端设备切换至目标小区，可以包括：在源接入网设备接收到来自目标接入网设备的第三消息的情况下，源接入网设备确定终端设备切换至目标小区。
可选的，在本申请实施例的不同实现方式中，该第三消息可能有不同的功能，示例性的：
在一种可能的实现方式中，第三消息用于通知源接入网设备释放终端设备的上下文。例如，该第三消息为UE上下文释放(UE Context Release消息)。在另一种可能的实现方式中，该第三消息用于向源接入网设备请求终端设备的上下文。例如，该第三消息为获取UE上下文请求(Retrieve UE Context Request)消息。
可选的，在该可能的实现方式中，源接入网设备可以在如下场景中收到该第三消息：终端设备未成功接入源接入网设备指定的第一目标小区，即终端设备在切换至第一目标小区时发生失败。随后，终端设备向第二目标小区发起重建立，从而使得第二目标小区所属的接入网设备向源接入网设备发送获取UE上下文请求(Retrieve UE Context Request)，以获取终端设备的上下文。
可以理解的是，在该可能的实现方式中，上述第二目标小区所属的接入网设备即为本申请实施例中的目标接入网设备。
可选的，在该场景下，第三消息可以包括第二目标小区的标识信息，以向源接入网设备指示终端设备切换后的服务小区。源接入网设备收到该第三消息后，可以向第二目标小区所属的接入网设备发送终端设备的上下文，此外，源接入网设备还可以释放该终端设备的上下文。
可选的，本申请实施例对源接入网设备收到上述第三消息的场景不做具体限定，源接入网设备也可以在其他场景下收到上述第三消息。
S502、源接入网设备向位置管理功能网元发送第一消息。相应的，位置管理功能网元接收来自源接入网设备的第一消息。
其中，第一消息的功能以及第一消息包括的信息可以参考上述步骤S402，在此不再赘述。
可选的，在本申请实施例的不同实施场景下，第一消息可能为不同类型的消息，或有不同的消息名称，示例性的：
在一种可能的实现方式中，该第一消息可以是现有的消息，例如定位信息请求消息(Positioning Information Update)消息。该实现方式中，第一消息可以包括目标小区的标识信息和第一指示信息。
在另一种可能的实现方式中，该第一消息可以是新定义的消息，例如定位信息终止(Positioning Information Terminate)消息。该实现方式中，第一消息可以包括目标小区的标识信息和第一指示信息。
此外，本申请实施例中，该定位信息终止(Positioning Information Terminate)消息可以用于通知位置管理功能网元，该消息的发送方不再向位置管理功能网元更新SRS配置。此时，不限定该Positioning Information Terminate消息中包括目标小区的标识信息和第一指示信息，即该场景下本申请实施例对该Positioning Information Terminate消息中包括的内容不做具体限定。
需要说明的是，本申请不限定由源接入网设备在终端设备切换至目标小区后向位置管理功能网元发送该Positioning Information Terminate消息，也可以由其他接入网设备在其他情况下，向位置管理功能网元发送该Positioning Information Terminate消息。
示例性的，服务接入网设备可以在确定不再配置终端设备发送用于定位的SRS的情况下，向位置管理功能网元发送该Positioning Information Terminate消息，或者，在服务接入网设备确定不再更新SRS配置的情况下，向位置管理功能网元发送该Positioning Information Terminate消息，以告知位置管理功能网元，服务接入网设备不再向位置管理功能网元更新SRS配置。
可以理解的是，本申请实施例中的服务接入网设备指终端设备的服务小区所属的接入网设备。
在又一种可能的实现方式中，该第一消息可以是新定义的专用消息，用于向位置管理功能网元指示终端设备发生切换，例如，定位信息指示(Positioning Information Indication)消息。该实现方式中，第一消息可以包括目标小区的标识信息，此外，第一消息可以不包括第一指示信息。
可以理解的是，上述新定义消息的名称仅是示例性的说明，实际应用中，还可以有其他的名称，本申请实施例对此不做具体限定。
结合上述步骤S501至S502，对于源接入网设备，其在确定终端设备切换至目标小区后，向位置管理功能网元发送第一消息。
可选的，在本申请的一种实施场景下，源接入网设备还可以在收到目标接入网设备的切换请求确认(Handover request ACK)消息后，向位置管理功能网元发送第一消息。即上述步骤S501可以替换为：源接入网设备确定接收到来自目标接入网设备的切换请求确认(Handover request ACK)消息，或者说，源接入网设备确定目标接入网设备允许终端设备切换。
S503、位置管理功能网元向目标接入网设备发送请求消息。相应的，目标接入网设备接收来自位置管理功能网元的请求消息。
其中，该请求消息用于向目标接入网设备请求SRS配置信息，或者说，用于请求目标接入网设备为终端设备配置SRS。该请求消息例如可以为定位信息请求(Positioning information request)消息。
本申请实施例中，SRS配置信息用于向终端设备配置SRS，或者说，SRS配置信息用于终端设备发送SRS。终端设备收到SRS配置信息后，可以根据该SRS配置信息中包括的时频域资源信息在相应的时频位置发送SRS。SRS配置信息可以包括但不限于：时域资源配置信息、频域资源配置信息、SRS的发送天线端口数量、周期信息等。其中，时域资源配置信息例如可以包括起始符号位置、符号个数等；频域资源配置信息例如可以包括频域位置、频率偏置等；周期信息用于指示SRS的发送周期。
可选的，该请求消息可以包括SRS的周期信息和/或SRS的频率信息。
可选的，该周期信息用于指示SRS的周期，该SRS的周期可以理解为终端设备发送SRS的周期。
基于该方案，一方面，位置管理功能网元在请求消息中携带周期信息，为目标接入网设备推荐SRS的周期，可以使得目标接入网设备根据位置管理功能网元推荐的该周期配置终端设备发送SRS的周期，从而使得目标接入网设备配置的SRS的周期接近或等于位置管理功能网元期望的SRS的周期。另一方面，位置管理功能网元在推荐SRS的周期时，可以根据当前定位业务的时延需求，选择合适的周期发送给目标接入网设备，从而通过SRS的发送周期控制SRS的测量时延，进而控制定位业务的时延，满足定位业务的需求。
可选的，该频率信息用于指示SRS的频点，或者用于指示SRS载波的频点。示例性的，频点可以通过绝对无线载频信道号(absolute radio frequency channel number，ARFCN)表示。
可选的，SRS的频点可以是SRS所占带宽的中心频点，或者可以是SRS所占带宽的起始频点。其中，SRS所占带宽也可以理解为SRS传输带宽。
可选的，SRS载波的频点可以是该载波的载波中心的频点，或者可以是该载波的point A的频点等。可选的，SRS所占带宽可以是SRS载波的部分或全部带宽。
基于该方案，位置管理功能网元可以选择测量接入网设备，根据其选择的测量接入网设备支持的频点，向目标接入网设备推荐(或指示)用于SRS的频点，使得目标接入网设备可以根据位置管理网元的推荐为终端设备配置SRS，从而避免目标接入网设备在其他频点上配置SRS，导致位置管理功能网元选择的测量接入网设备无法测量SRS的问题，提高SRS测量的成功率，进而提高定位成功率。
可以理解的是，位置管理功能网元还可以通过其他消息向目标接入网设备发送该SRS的周期信息和/或SRS的频率信息，本申请对此不做具体限定。
S504、目标接入网设备向位置管理功能网元发送响应消息。相应的，位置管理功能网元接收来自目标接入网设备的响应消息。
可选的，该响应消息例如可以为定位信息响应(Positioning information response)消息。
可选的，目标接入网设备收到上述请求消息后，可以确定第一SRS配置信息，在该响应消息中携带第一SRS配置信息，该第一SRS配置信息用于终端设备发送SRS，该SRS用于确定终端设备切换至目标小区后的位置。同时，目标接入网设备可以向终端设备发送该第一SRS配置信息，以便终端设备根据该第一SRS配置信息发送SRS。
可选的，在上述请求消息中包括SRS的周期信息时，目标接入网设备可以根据该SRS的周期信息确定第一SRS配置信息，例如，在该第一SRS配置信息中包括该周期信息指示的周期；在上述请求消息中包括SRS的频率信息时，目标接入网设备可以根据该频率信息确定第 一SRS配置信息，例如，在该第一SRS配置信息中包括该频率信息指示的频点。
或者，目标接入网设备收到上述请求消息后，可以沿用第二SRS配置信息，该第二SRS配置信息为终端设备切换至目标小区之前，源接入网设备确定的SRS配置信息。或者说使用源接入网设备对终端设备的SRS配置。此时，该响应消息可以包括第二指示信息，该第二指示信息用于指示目标接入网设备未更新第二SRS配置信息；或者，该响应消息可以包括第二SRS配置信息，即目标接入网设备向位置管理功能网元返回源接入网设备的SRS配置；或者，该响应消息可以不携带第二指示信息和第二SRS配置信息，该场景下，位置管理功能网元默认目标接入网设备未更新源接入网设备的SRS配置。
可以理解的是，若目标接入网设备向终端设备发送了第一SRS配置信息，终端设备收到该第一SRS配置信息后，根据该第一SRS配置信息发送SRS，以使测量接入网设备进行测量。若目标接入网设备沿用第二SRS配置信息，终端设备根据该第二SRS配置信息发送SRS。
需要说明的是，上述步骤S503和步骤S504为可选步骤，即步骤S503和步骤S504可以不执行。该情况下，默认目标接入网设备沿用第二SRS配置信息。
S505、位置管理功能网元向测量接入网设备发送第二消息。相应的，测量接入网设备接收来自位置管理功能网元的第二消息。
其中，第二消息的功能以及测量接入网设备的相关说明可参考上述步骤S403，在此不再赘述。
可选的，在测量接入网设备包括一个或多个TRP的情况下，位置管理功能网元还向测量接入网设备发送该测量接入网设备的TRP的信息，例如TRP列表(list)。该TRP的信息用于指示测量接入网设备中用于测量终端设备发送的SRS的TRP。
示例性的，以测量接入网设备包括测量接入网设备1，该测量接入网设备1包括TRP1、TRP2、TRP3、TRP4为例，若位置管理功能网元确定该测量接入网设备1中可以用于测量终端设备发送的SRS的TRP为TRP1和TRP2，则该TRP列表可以包括TRP1和TPR2的标识，用于指示TRP1和TRP2测量终端设备发送的SRS。
可选的，位置管理功能网元可以通过第二消息向测量接入网设备发送该测量接入网设备的TRP的信息，即第二消息包括该测量接入网设备的TRP的信息；或者，也可以通过除第二消息外的消息向测量接入网设备发送该测量接入网设备的TRP的信息，本申请实施例对此不做具体限定。
基于该方案，可以向测量接入网设备指示测量终端设备的SRS的TRP，避免测量接入网设备使用全部TRP测量SRS，浪费测量接入网设备的功耗和资源。
可选的，该步骤S505中的测量接入网设备可能存在如下情况：
一种可能的情况下，该测量接入网设备包括第一测量接入网设备，该第一测量接入网设备为终端设备切换至目标小区之前，未测量终端设备的SRS的接入网设备。或者说，终端设备切换至目标小区之前，位置管理功能网元确定的测量接入网设备不包括第一测量接入网设备。
例如，在终端设备切换至目标小区之前，测量接入网设备为测量接入网设备1和测量接入网设备2，在终端设备切换至目标小区之后，测量接入网设备为测量接入网设备1、测量接入网设备3、和测量接入网设备4，该第一测量接入网设备即为测量接入网设备3和测量接入网设备4。
在该场景下，位置管理功能网元向第一测量接入网设备发送的第二消息可以为测量请求(Measurement Request)消息。
在目标接入网设备沿用第二SRS配置信息的情况下，该第二消息可以包括第二SRS配置信息；或者，在目标接入网设备未沿用第二SRS配置，即目标接入网设备确定了第一SRS配置信息的情况下，该第二消息可以包括第一SRS配置信息。
当然，位置管理功能网元也可以通过除第二消息外的其他消息向第一测量接入网设备发送第二SRS配置信息或第一SRS配置信息。
另一种可能的情况下，该测量接入网设备包括第二测量接入网设备，该第二测量接入网设备为终端设备切换至目标小区之前，位置管理功能网元确定的用于测量终端设备的SRS的接入网设备。或者说，终端设备切换至目标小区之前，位置管理功能网元确定的测量接入网设备包括第二测量接入网设备。也就是说，在终端设备切换至目标小区之前和切换至目标小区之后，第二测量接入网设备均用于测量终端设备发送的SRS。
例如，在终端设备切换至目标小区之前，测量接入网设备为测量接入网设备1和测量接入网设备2，在终端设备切换至目标小区之后，测量接入网设备为测量接入网设备1、测量接入网设备3、和测量接入网设备4，该第二测量接入网设备即为测量接入网设备1。
在该场景下，位置管理功能网元向第二测量接入网设备发送的第二消息可以为测量更新(Measurement Update)消息，用于更新SRS配置和/或第二测量接入网设备的TRP列表。
在目标接入网设备沿用第二SRS配置信息的情况下，该第二消息可以不包括第二SRS配置信息；或者，在目标接入网设备未沿用第二SRS配置，即目标接入网设备确定了第一SRS配置信息的情况下，该第二消息可以包括第一SRS配置信息。
当然，位置管理功能网元也可以通过除第二消息外的其他消息向第一测量接入网设备发送第一SRS配置信息或第二SRS配置信息。
可选的，在本申请实施例的一种实施场景下，该第二消息还可以包括第三指示信息，该第三指示信息用于指示SRS的测量量的上报颗粒度(reporting granularity)，该上报颗粒度可以理解为上报范围中相邻两个可上报的值之间的差。该SRS的测量量例如可以为UL-TDOA中的相对到达时间或UL-AOA中的到达角。
可选的，承载该第三指示信息的信元可以为以下任意一种：时间上报颗粒度参数(Timing Reporting Granularity Factor)信元、时间上报精度(Timing Reporting Accuracy)信元、上报颗粒度(Reporting Granularity)信元、或时间上报颗粒度(Timing Reporting Granularity)信元。当然，该信元还可以有其他名称，本申请实施例对该信元的名称不做具体限定。
可选的，对于时间测量量，例如UL-TDOA中的相对到达时间，SRS的测量量的上报范围可以为[-N×T c,+N×T c]。其中，N、T c为正整数。相应的，SRS的测量量的上报颗粒度T可以满足如下公式：T＝T c×2 k。其中，k为自然数，即k来自于自然数集合{0,1,2,3,4,5,...}。
可选的，该第三指示信息可以为k的取值，例如0、1、2、3、4、5等。此时，示例性的，承载该第三指示信息的信元可以为上述时间上报颗粒度参数信元。k可以称为时间上报颗粒度参数。
或者，该第三指示信息可以为k的标识，例如k0、k1、k2、k3、k4、k5等，其对应的k的取值分别为0、1、2、3、4、5。此时，示例性的，承载该第三指示信息的信元可以为时间上报精度信元、上报颗粒度信元、或时间上报颗粒度信元。当然，也可以有其他名称，本申请实施例对此不做具体限定。
或者，该第三指示信息可以为测量量的上报颗粒度T。
可选的，测量接入网设备确定上报颗粒度T后，可以根据T在上报范围[-N×T c,+N×T c]中选取合适的值作为测量量进行上报。
示例性的，以N为985024，T c为1，k分别取0～5时，SRS测量量的上报颗粒度T以及 上报范围中可上报的值的数量如下表1所示。
表1
k T 上报范围中可上报的值的数量
0 1 1970050
1 2 985026
2 4 492514
3 8 246258
4 16 123130
5 32 61566
可以理解的是，位置管理功能网元也可以通过除第二消息外的其他消息向测量接入网设备发送第三指示信息。
基于该方案，位置管理功能网元可以根据定位业务的需求，例如精度需求，向测量接入网设备指示测量量的上报颗粒度，从而保证测量结果和定位结果的精度，提高定位准确性。
S506、测量接入网设备测量终端设备发送的SRS，得到该SRS的测量量。
可选的，若位置管理功能网元向测量接入网设备发送了该测量接入网设备的TRP的信息，该步骤S506中由该TRP的信息指示的TRP测量终端设备发送的SRS。
可选的，若步骤S505中包括多个测量接入网设备，本申请中允许该多个测量接入网设备中存在部分测量接入网设备得不到SRS的测量量，例如该部分测量接入网设备由于自身原因无法测量SRS等。在该情况下，允许SRS测量量的数量小于测量接入网设备的数量。
S507、测量接入网设备向位置管理功能网元发送SRS的测量量。相应的，位置管理功能网元接收来自测量接入网设备的该SRS的测量量。
可选的，在位置管理功能网元向测量接入网设备发送了SRS的测量量的上报颗粒度的情况下，该测量量可以是测量接入网设备根据该上报颗粒度确定的测量量。
可选的，位置管理功能网元收到该测量量后，可以执行下述步骤S508。
S508、位置管理功能网元根据SRS的测量量，确定终端设备切换至目标小区后的位置。
基于该方案，在终端设备发生切换后，源接入网设备可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
可选的，本申请实施例的一种实施场景下，在位置管理功能网元向第二测量接入网设备发送第二消息之前，该通信方法还可以包括：位置管理功能网元向第二测量接入网设备发送通知消息，该通知消息用于通知第二测量接入网设备停止测量SRS。其中，第二测量接入网设备可参考上述步骤S505中的相关说明，在此不再赘述。
可以理解的是，位置管理功能网元可以目标接入网设备未沿用第二SRS配置信息，即位置管理功能网元收到来自目标接入网设备的第一SRS配置信息的情况下，向第二测量接入网设备发送该通知消息。
基于上述步骤S505中的示例，在目标接入网设备未沿用第二SRS配置信息的情况下，也就是说，位置管理功能网元可以先向测量接入网设备1发送该通知消息，使得测量接入网设备1停止测量终端设备根据第二SRS配置信息发送的SRS。之后，再向测量接入网设备1 发送第二消息，以请求测量接入网设备1根据第一SRS配置信息测量终端设备发送的SRS，此时，终端设备根据第一SRS配置信息发送SRS。
可以理解的，除第二测量接入网设备外，位置管理功能网元还可以向终端设备切换至目标小区前，用于测量终端设备发送的SRS的其他测量接入网设备(例如步骤S505中的测量接入网设备2)发送该通知消息。
基于该方案，可以使得终端设备切换至目标小区之前，用于测量终端设备发送的SRS的测量接入网设备停止测量源接入网设备配置终端设备发送的SRS，释放这些测量接入网设备的资源，降低对测量接入网设备的业务数据传输的影响，提高测量接入网设备的业务性能，此外，也可以降低测量接入网设备的能耗。
可选的，在本申请实施例的另一种实施场景下，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送第四指示信息，该第四指示信息用于指示目标接入网设备停止为终端设备配置SRS。
可选的，位置管理功能网元可以在定位成功或结束，例如获取到终端设备的位置的情况下，或者在由于某些原因停止定位的情况下，或者在获知终端设备发生移动或切换的情况下，向目标接入网设备发送该第四指示信息。
基于该方案，可以使得目标接入网设备停止为终端设备配置SRS，进而可以使得终端设备停止根据目标接入网设备的配置发送SRS，从而释放终端设备的资源，降低对终端设备的业务性能的影响以及终端设备的能耗。
下面，介绍上述通信设备为目标接入网设备时，本申请实施例提供的通信方法。如图6所示，该通信方法可以包括如下步骤：
S601、源接入网设备向目标接入网设备发送定位相关信息。相应的，目标接入网设备接收来自源接入网设备的定位相关信息。
其中，该定位相关信息包括位置管理功能网元的标识信息。该位置管理功能网元的标识信息可以为路由标识(Routing ID)。
进一步地，该定位相关信息还包括SRS的信息和/或第五指示信息，该SRS的信息用于指示SRS的传输特性，该第五指示信息用于指示目标接入网设备为终端设备配置SRS。可选的，该第五指示信息还可以用于指示目标接入网设备向位置管理功能网元发送SRS的配置信息。
可选的，该定位相关信息还可以包括其他信息，例如，位置管理功能网元正在执行终端设备的定位业务等。
可选的，该SRS的信息可以是终端设备切换至目标小区之前，位置管理功能网元请求源接入网设备为终端设备配置SRS时，发送给源接入网设备的信息。例如，SRS的信息可以是位置管理功能网元发送给源接入网设备的定位信息请求消息的SRS传输特性(SRS Transmission characteristics)信元中包括的信息。
可选的，源接入网设备可以在终端设备的切换过程中，向目标接入网设备发送该定位相关信息。
一种可能的实现方式中，源接入网设备可以在切换请求(Handover Request)消息中携带该定位相关信息。
另一种可能的实现方式中，源接入网设备可以在获取UE上下文响应(Retrieve UE Context Response)消息中携带该定位相关信息。
可选的，在该可能的实现方式中，源接入网设备可以在如下场景中发送该获取UE上下 文响应(Retrieve UE Context Response消息)，并在该Retrieve UE Context Response消息中携带定位相关信息：终端设备未成功接入源接入网设备指定的第一目标小区，即终端设备在切换至第一目标小区时发生失败。随后，终端设备向第二目标小区发起重建立，从而使得第二目标小区所属的接入网设备向源接入网设备发送获取UE上下文请求(Retrieve UE Context Request)消息，以获取终端设备的上下文。源接入网设备收到Retrieve UE Context Request消息后，向第二目标小区所属的接入网设备发送Retrieve UE Context Response消息，并在该Retrieve UE Context Response消息中携带终端设备的上下文和上述定位相关信息。此外，源接入网设备还可以释放该终端设备的上下文。
可选的，第二目标小区所属的接入网设备发送的Retrieve UE Context Request消息中可以包括目标小区的标识信息等。
可以理解的是，在该可能的实现方式中，上述第二目标小区所属的接入网设备即为本申请实施例中的目标接入网设备。
可选的，本申请实施例对源接入网设备收到Retrieve UE Context Request消息以及发送Retrieve UE Context Response消息的场景不做具体限定，源接入网设备可以在其他场景下收到或发送上述相应消息。
S602、目标接入网设备确定终端设备切换至目标小区。
其中，终端设备切换至目标小区可参考上述步骤S501中的相关说明，在此不再赘述。
可选的，目标接入网设备确定终端设备切换至目标小区可以包括：在目标接入网设备接收到来自终端设备的RRC重配置完成消息的情况下，确定终端设备切换至目标小区。
S603、目标接入网设备向位置管理功能网元发送第一消息。相应的，位置管理功能网元接收来自目标接入网设备的第一消息。
其中，第一消息的功能以及第一消息包括的信息可以参考上述步骤S402；第一消息的类型说明可参考上述步骤S502中的相关描述，在此不再赘述。
可选的，该步骤S603可以是上述步骤S601触发的。也就是说，在目标接入网设备收到源接入网设备发送的定位相关信息后，可以执行该步骤S603。
S604、目标接入网设备向位置管理功能网元发送SRS配置信息或第二指示信息。
可选的，在目标接入网设备收到定位相关信息后未沿用第二SRS配置信息，即确定了第一SRS配置信息的情况下，可以向位置管理功能网元发送第一SRS配置信息，同时，目标接入网设备可以向终端设备发送该第一SRS配置信息，以便终端设备根据该第一SRS配置信息发送SRS；在目标接入网设备收到定位相关信息后沿用第二SRS配置信息的情况下，可以向位置管理功能网元发送第二指示信息或第二SRS配置信息。详细说明可参考上述图5所示实施例中的相关描述，在此不再赘述。
可选的，目标接入网设备可以通过定位信息更新(Positioning Information Update)消息向位置管理功能网元发送SRS配置信息或第二指示信息，或者可以通过其他消息向位置管理功能网元发送SRS配置信息或第二指示信息，本申请对该消息的名称、类型、或功能等不做具体限定。
可选的，目标接入网设备后续更新SRS配置时，可以向位置管理功能网元发送更新后的SRS配置。
需要说明的是，该步骤S603和步骤S604没有必然的先后顺序，可以先执行步骤S603，再执行步骤S604。或者，先执行步骤S604，再执行步骤S603。或者，可以同时执行步骤S603和步骤S604，例如，在步骤S603的第一消息中包括SRS配置信息或第二指示信息。
可以理解的是，若目标接入网设备向终端设备发送了第一SRS配置信息，终端设备收到该第一SRS配置信息后，根据该第一SRS配置信息发送SRS，以使测量接入网设备进行测量。若目标接入网设备沿用第二SRS配置信息，终端设备根据该第二SRS配置信息发送SRS。
一种可能的实施场景下，该步骤S604中，目标接入网设备发送给位置管理功能网元的消息中可以不包括第二指示信息和第二SRS配置信息，此时，位置管理功能网元默认目标接入网设备未更新源接入网设备为终端设备配置的SRS。
另一种可能的实施场景下，可以不执行该步骤S604，即步骤S604为可选的。此时，位置管理功能网元默认目标接入网设备未更新源接入网设备为终端设备配置的SRS。
S605～S608、同图5所示实施例中的步骤S505～S508，可参见上述相关说明，在此不再赘述。
基于该方案，在终端设备发生切换后，目标接入网设备可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
可选的，本申请实施例的一种实施场景下，在位置管理功能网元向第二测量接入网设备发送第二消息之前，该通信方法还可以包括：位置管理功能网元向第二测量接入网设备发送通知消息，该通知消息用于通知第二测量接入网设备停止根据第二SRS配置信息测量SRS。
可选的，在本申请实施例的另一种实施场景下，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送第四指示信息，该第四指示信息用于指示目标接入网设备停止为终端设备配置SRS。
该两种实施场景下的详细说明以及相应的技术效果可参考上述实施例中的相关描述，在此不再赘述。
接下来，介绍上述通信设备为移动管理功能网元时，本申请实施例提供的通信方法。如图7所示，该通信方法可以包括如下步骤：
S701、移动管理功能网元确定终端设备切换至目标小区。
可以理解的是，在该步骤S701之前，终端设备发生了切换，图7中步骤S701之前示例性的示出了切换流程中的部分步骤，本申请实施对切换流程不做具体限定。
其中，终端设备切换至目标小区可参考上述步骤S501中的相关说明，在此不再赘述。
可选的，移动管理功能网元确定终端设备切换至目标小区，可以包括：在移动管理功能网元接收到来自目标接入网设备的第四消息的情况下，移动管理功能网元确定终端设备切换至目标小区。
其中，该第四消息用于请求将终端设备的下行数据路径切换至目标接入网设备。该第四消息例如可以为路径切换请求(Path Switch Request)消息。
S702、移动管理功能网元向位置管理功能网元发送第一消息。相应的，位置管理功能网元接收来自移动管理功能网元的第一消息。
其中，第一消息的功能以及第一消息包括的信息可以参考上述步骤S402，在此不再赘述。
也就是说，移动管理功能网元可以感知终端设备的切换，从而可以通知位置管理功能网元切换后的目标小区的标识。
S703～S708、同图5所示实施例中的步骤S503～S508，可参见上述相关说明，在此不再赘述。
基于该方案，在终端设备发生切换后，移动管理功能网元可以向位置管理功能网元发送目标小区的标识信息，使得位置管理功能网元感知终端设备的切换，并根据该目标小区的标识向测量接入网设备发送第二消息，以请求该测量接入网设备测量终端设备的SRS，最终使得位置管理功能网元可以根据测量接入网设备上报的测量量确定终端设备切换至目标小区后的位置，从而完成定位，保持定位的连续性，提高定位成功率。
可选的，本申请实施例的一种实施场景下，在位置管理功能网元向第二测量接入网设备发送第二消息之前，该通信方法还可以包括：位置管理功能网元向第二测量接入网设备发送通知消息，该通知消息用于通知第二测量接入网设备停止根据第二SRS配置信息测量SRS。
可选的，在本申请实施例的另一种实施场景下，该通信方法还可以包括：位置管理功能网元向目标接入网设备发送第四指示信息，该第四指示信息用于指示目标接入网设备停止为终端设备配置SRS。
该两种实施场景下的详细说明以及相应的技术效果可参考上述实施例中的相关描述，在此不再赘述。
此外，在本申请实施例的一种实施场景下，本申请实施例还提供一种通信方法，该通信方法可以应用于各种位置管理功能网元确定终端设备位置的流程中，如图8所示，该通信方法包括如下步骤：
S801、位置管理功能网元确定SRS的周期信息和/或频率信息。
可选的，该周期信息用于指示SRS的周期，该SRS的周期可以理解为终端设备发送SRS的周期。
可选的，该频率信息用于指示SRS的频点，或者用于指示SRS载波的频点。示例性的，频点可以通过ARFCN表示。
可选的，SRS的频点可以是SRS所占带宽的中心频点，或者可以是SRS所占带宽的起始频点。其中，SRS所占带宽也可以理解为SRS传输带宽。
可选的，SRS载波的频点可以是该载波的载波中心的频点，或者可以是该载波的point A的频点等。
可选的，SRS所占带宽可以是SRS载波的部分或全部带宽。
S802、位置管理功能网元向服务接入网设备发送该周期信息和/或频率信息。
其中，服务接入网设备为终端设备当前的服务小区所属的接入网设备。
其中，在位置管理功能网元确定SRS的周期信息的情况下，该步骤S802中，位置管理功能网元发送该周期信息；在位置管理功能网元确定SRS的频率信息的情况下，该步骤S802中，位置管理功能网元发送该频率信息。
可选的，位置管理功能网元可以通过定位信息请求(Positioning Information Request)消息向服务接入网设备发送该周期信息和/或频率信息。进一步的，该周期信息和/或频率信息可以包含于该定位信息请求(Positioning Information Request)消息的SRS传输特性(SRS transmission characteristics)信元中。
当然，位置管理功能网元也可以通过其他消息中的其他信元向服务接入网设备发送该周期信息和/或频率信息，本申请实施例对此不做具体限定。
S803、服务接入网设备根据周期信息和/或频率信息确定SRS配置信息。
或者说，服务接入网设备根据该周期信息和/或频率信息为终端设备配置SRS。
可选的，服务接入网设备收到来自位置管理功能网元的周期信息后，可以根据位置管理功能网元推荐的SRS的周期为终端设备配置SRS。例如，将终端设备的SRS的周期配置为位 置管功能网元推荐的周期，即将SRS的周期配置为该周期信息指示的周期；或者，对该周期信息指示的周期进行调整得到调整后的周期，将SRS的周期配置为该调整后的周期。
可选的，服务接入网设备在收到来自位置管理功能网元的频率信息后，可以根据位置管理功能网元推荐的频点为终端设备配置SRS。例如，该频率信息用于指示SRS的频点时，将SRS的频点配置为位置管理功能网元推荐的频点，即将SRS的频点配置为该频率信息指示的SRS的频点；或者，根据该频率信息指示的SRS的频点确定一个新的频点，将SRS的频点配置为该新的频点。该频率信息用于指示SRS载波的载波中心的频点或point A的频点时，服务接入网设备将SRS的频点配置为该载波上的频点，或者说在该载波上配置SRS。
也就是说，该步骤S803中，服务接入网设备确定的SRS配置信息中包括的SRS的周期可以与位置管理功能网元指示的周期相同或不同；同样，服务接入网设备确定的SRS配置信息中包括的SRS的频点可以与位置管理功能网元指示的频点相同或不同。
S804、服务接入网设备向位置管理功能网元发送SRS配置信息。相应的，位置管理功能网元接收来自服务接入网设备的SRS配置信息。
可以理解的是，服务接入网设备还向终端设备发送SRS配置信息。终端设备接收到该SRS配置信息后，根据该SRS配置信息发送SRS，以便测量接入网设备进行测量。
在位置管理功能网元在向服务接入网设备发送周期信息的情况下，一方面，为服务接入网设备推荐SRS的周期，可以使得服务接入网设备根据位置管理功能网元推荐的该周期配置终端设备发送SRS的周期，从而使得服务接入网设备配置的SRS的周期接近或等于位置管理功能网元期望的SRS的周期。另一方面，位置管理功能网元在推荐SRS的周期时，可以根据当前定位业务的时延需求，选择合适的周期发送给服务接入网设备，从而通过SRS的发送周期控制SRS的测量时延，进而控制定位业务的时延，满足定位业务的需求。
在位置管理功能网元向服务接入网设备发送频率信息的情况下，位置管理功能网元可以选择测量接入网设备，根据其选择的测量接入网设备支持的频点，向目标接入网设备推荐(或指示)用于SRS的频点，使得目标接入网设备可以根据位置管理网元的推荐为终端设备配置SRS，从而避免目标接入网设备在其他频点上配置SRS，导致位置管理功能网元选择的测量接入网设备无法测量SRS的问题，提高SRS测量的成功率，进而提高定位成功率。
需要说明的是，本申请实施例对该通信方法的具体应用场景不做具体限定，例如，其可以应用于图4至图7所示的流程中，还可以应用于其他定位流程中，本申请实施例对此不做具体限定。
在本申请实施例的另一种实施场景下，本申请实施例还提供一种通信方法，该通信方法可以应用于各种位置管理功能网元确定终端设备位置的流程中，如图9所示，该通信方法包括如下步骤：
S901、位置管理功能网元确定SRS的测量量的上报颗粒度(reporting granularity)。
其中，对于SRS的测量量的上报颗粒度的相关说明可参考上述步骤S505中的描述，在此不再赘述。
S902、位置管理功能网元向测量接入网设备发送指示信息。相应的，测量接入网设备接收来自位置管理功能网元的指示信息。
其中，该指示信息用于指示SRS的测量量的上报颗粒度。
可选的，该指示信息与上述步骤S505中的第三指示信息类似，即上述步骤S505中第三指示信息的特征可以适用于该指示信息，但不限定该指示信息仅具有第三指示信息的特征。相关说明可参考上述步骤S505中的描述，在此不再赘述。
可选的，位置管理功能网元可以通过测量请求(Measurement Request)消息向测量接入网设备发送该指示信息，也可以通过其他消息向测量接入网设备发送该指示信息，本申请实施例对此不做具体限定。
S903、测量接入网设备测量终端设备发送的SRS。
S904、测量接入网设备向位置管理功能网元发送根据该上报颗粒度确定的测量量。相应的，位置管理功能网元接收来自测量接入网设备的该测量量。
也就是说，测量接入网设备根据SRS的测量量的上报颗粒度，向位置管理功能网元发送SRS的测量量。或者说，测量接入网设备根据位置管理功能网元指示的上报颗粒度，上报相应颗粒度的测量量，可参考上述步骤S505中的描述，在此不再赘述。
基于该方案，位置管理功能网元可以根据定位业务的需求，例如精度需求，向测量接入网设备指示测量量的上报颗粒度，从而保证测量结果和定位结果的精度，提高定位准确性。
需要说明的是，本申请实施例对该通信方法的具体应用场景不做具体限定，例如，其可以应用于图4至图7所示的流程中，还可以应用于其他定位流程中，本申请实施例对此不做具体限定。
在本申请实施例的又一种实施场景下，本申请实施例还提供一种通信方法，该通信方法可以应用于各种位置管理功能网元确定终端设备位置的流程中，如图10所示，该通信方法包括如下步骤：
S1001、位置管理功能网元生成指示信息。
其中，该指示信息用于指示停止为终端设备配置SRS。
可选的，位置管理功能网元可以在定位成功，例如获取到终端设备的位置的情况下，或者在由于某些原因停止定位的情况下，或者在获知终端设备发生移动或切换的情况下，生成该指示信息。
S1002、位置管理功能网元向服务接入网设备发送该指示信息。
可选的，服务接入网设备为终端设备当前的服务小区所属的接入网设备；或者，可以为终端设备移动或切换前的服务小区所属的接入网设备。
可选的，服务接入网设备收到该指示信息后，可以停止为终端设备配置SRS。
基于该方案，可以使得服务接入网设备停止为终端设备配置SRS，进而可以使得终端设备停止根据服务接入网设备的配置发送SRS，从而释放终端设备的资源，降低对终端设备的业务性能的影响以及终端设备的能耗。
需要说明的是，本申请实施例对该通信方法的具体应用场景不做具体限定，例如，其可以应用于图4至图7所示的流程中，还可以应用于其他定位流程中，本申请实施例对此不做具体限定。
可以理解的是，上述图4-图10所示的实施例中，在目标接入网设备由CU-DU组成时，位置管理功能网元向目标接入网设备发送请求消息以请求SRS配置信息时，可以由目标接入网设备的CU接收该请求消息，之后，将该请求消息包括的部分或全部信息(例如SRS的周期信息和/或频率信息)发送给目标接入网设备的DU。DU根据该部分或全部信息确定SRS配置后，例如根据SRS的周期信息和/或频率信息确定上述SRS配置信息，向CU发送SRS配置信息，CU收到DU的SRS配置信息后，向位置管理功能网元发送该SRS配置信息。此外，DU还可以向终端设备发送该SRS配置信息。
在测量接入网设备由CU-DU组成时，位置管理功能网元向测量接入网设备发送请求消息以请求测量接入网设备测量终端设备的SRS时，可以由测量接入网设备的CU接收该请求 消息，之后，将该请求消息包括的部分或全部信息(例如SRS的测量量的上报颗粒度，或者时间上报颗粒度参数)发送给测量接入网设备的DU。DU根据该部分或全部信息进行测量后，将SRS的测量量(例如该SRS的测量量为该上报颗粒度所对应的测量量)返回给CU，再由CU将该测量量返回给位置管理功能网元。
可选的，CU和DU之间传输上述信息时，承载该信息的消息类型或消息名称可以与CU和位置管理功能网元之间交互的消息类型或消息名称相同，也可以不同，例如，位置管理功能网元向CU发送的用于请求测量的消息为测量请求(Measurement Request)消息，CU基于该测量请消息向DU发送的消息可以为定位测量请求(Positioning Measurement Request)消息。
可以理解的，上述图4至图10所示的实施例中，各个设备(或网元)的动作可以由图3所示的通信装置300中的处理器301调用存储器303中存储的应用程序代码以指令该通信设备执行。
可以理解的，本申请实施例中，本申请中的各个设备(或网元)可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
可以理解的是，以上各个实施例中，由各个设备(或网元)实现的方法和/或步骤，也可以由可用于设备(或网元)的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。相应的，本申请实施例还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的位置管理功能网元，或者包含上述位置管理功能网元的装置，或者为可用于位置管理功能网元的部件；或者，该通信装置可以为上述方法实施例中的通信设备(例如源接入网设备、目标接入网设备、或移动管理功能网元)，或者包含上述通信设备的装置，或者为可用于通信设备的部件。
可以理解的是，该通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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。
本申请实施例可以根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以通信装置实现上述方法实施例中的位置管理功能网元的步骤为例。图11示出了一种通信装置110的结构示意图。该通信装置110包括接收模块1101和发送模块1102。
所述接收模块1101，也可以称为接收单元用以实现接收功能，例如可以是接收电路，接 收机，接收器或者通信接口。所述发送模块1102，也可以称为发送单元用以实现发送功能，例如可以是发送电路，发射机，发射器或者通信接口。
可选的，通信装置110还可以包括处理模块1103、存储模块1104(图11中未示出)。存储模块1104用于存储数据和/或指令，处理模块1103可以读取存储模块中的数据或者指令，实现上述各个实施例对应的方法。
其中，接收模块1101和发送模块1102分别用于执行上述方法实施例中由位置管理功能网元执行的接收和发送类的步骤，处理模块1103，可以用于执行上述方法实施例中由位置管理功能网元执行的除接收和发送类步骤之外的其他步骤。
在一种可能的实现方式中：
接收模块1101，用于接收来自通信设备的第一消息，该第一消息包括目标小区的标识信息；发送模块1102，用于向测量接入网设备发送第二消息，该第二消息用于请求测量该终端设备发送的探测参考信号SRS，该SRS用于确定该终端设备切换至该目标小区后的位置。
可选的，接收模块1101，还用于接收该SRS的测量量；处理模块1103，用于根据该SRS的测量量，确定终端设备切换至目标小区后的位置。
可选的，发送模块1102，还用于向测量接入网设备发送测量接入网设备的传输接收点TRP的信息，该TRP的信息用于指示该测量接入网设备中用于测量该SRS的TRP。
可选的，接收模块1101，还用于接收来自目标接入网设备的第一SRS配置信息，该第一SRS配置信息用于该终端设备发送该SRS；发送模块1102，还用于向该测量接入网设备发送该第一SRS配置信息。
可选的，接收模块1101，还用于接收来自目标接入网设备的第二指示信息，该第二指示信息用于指示该目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息；发送模块1102，还用于向该第一测量接入网设备发送该第二SRS配置信息。
可选的，发送模块1102，还用于向目标接入网设备发送请求消息，该请求消息用于请求目标接入网设备为终端设备配置SRS，或者说用于请求SRS配置信息。
可选的，发送模块1102，还用于向第二测量接入网设备发送通知消息，该通知消息用于通知第二测量接入网设备停止测量SRS。
可选的，发送模块1102，还用于向测量接入网设备发送第三指示信息，该第三指示信息用于指示该SRS的测量量的上报颗粒度。
可选的，发送模块1102，还用于向目标接入网设备发送第四指示信息，该第四指示信息用于指示该目标接入网设备停止为该终端设备配置SRS。
在另一种可能的实现方式中：
处理模块1103，用于确定SRS的周期信息和/或频率信息，该周期信息用于指示SRS的周期，该频率信息用于指示SRS的频点或用于指示SRS载波的频点；发送模块1102，用于向服务接入网设备发送该周期信息和/或频率信息。
在又一种可能的实现方式中：
处理模块1103，用于确定SRS的测量量的上报颗粒度；发送模块1102，用于向测量接入网设备发送指示信息，该指示信息用于指示该SRS的测量量的上报颗粒度。
在又一种可能的实现方式中：
处理模块1103，用于生成指示信息，该指示信息用于指示停止为终端设备配置SRS；发送模块1102，用于向服务接入网设备发送该指示信息。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
可以理解的是，上述各个模块可以独立设置，也可以集成，本申请实施例对此不做限定。
一种可能的方式中，该通信装置110以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置110可以采用图3所示的通信装置300的形式。
比如，图3所示的通信装置300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信装置300执行上述方法实施例中的通信方法。
具体的，图11中的接收模块1101、发送模块1102、或者处理模块1103的功能/实现过程可以通过图3所示的通信装置300中的处理器301调用存储器303中存储的计算机执行指令来实现。或者，图11中的处理模块1103的功能/实现过程可以通过图3所示的通信装置300中的处理器301调用存储器303中存储的计算机执行指令来实现，图11中的接收模块1101或发送模块1102的功能/实现过程可以通过图3所示的通信装置300中的通信接口304来实现。
由于本实施例提供的通信装置110可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
或者，比如，以通信装置实现上述方法实施例中的通信设备(例如源接入网设备、目标接入网设备、移动管理功能网元)的步骤为例。图12示出了一种通信装置120的结构示意图。该通信装置120包括处理模块1201和收发模块1202。
所述收发模块1202，也可以称为收发单元用以实现发送和/或接收功能，例如可以是收发电路，收发机，收发器或者通信接口。
其中，收发模块1202，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由通信设备执行的接收和发送类的步骤，处理模块1201，可以用于执行上述方法实施例中由通信设备执行的除接收和发送类步骤之外的其他步骤。
其中，处理模块1201，用于确定终端设备切换至目标小区；收发模块1202，用于向位置管理功能网元发送第一消息，该第一消息包括目标小区的标识信息。
可选的，该通信装置为源接入网设备，处理模块1201，用于确定终端设备切换至目标小区，可以包括：在收发模块1202接收到来自目标接入网设备的第三消息的情况下，处理模块1201，用于确定终端设备切换至目标小区，该第三消息用于通知该通信装置释放终端设备的上下文，或者用于向该通信装置请求终端设备的上下文。
可选的，该通信装置可以为目标接入网设备，收发模块1202，还用于接收来自源接入网设备的位置管理功能网元的标识信息和SRS的信息，该SRS的信息用于指示SRS的传输特性。
可选的，收发模块1202，还用于向位置管理功能网元发送第一SRS配置信息，该第一SRS配置信息用于该终端设备发送SRS，该SRS用于确定该终端设备的位置。
可选的，收发模块1202，还用于向位置管理功能网元发送第二指示信息，该第二指示信息用于指示目标接入网设备未更新第二SRS配置信息，该第二SRS配置信息为源接入网设备确定的SRS配置信息。
可选的，收发模块1202，还用于接收来自位置管理功能网元的请求消息，该请求消息用于请求目标接入网设备为终端设备配置SRS，或者说用于请求SRS配置信息。
可选的，该通信装置可以为移动管理功能网元，处理模块1201，用于确定终端设备切换至目标小区，可以包括：在收发模块1202接收到来自目标接入网设备的第四消息的情况下，处理模块1201，用于确定终端设备切换至目标小区，该第四消息用于请求将终端设备的下行数据路径切换至目标接入网设备。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
可选的，通信装置120还可以包括存储模块(图12中未示出)，用于存储数据和/或指令，处理模块1201可以读取存储模块中的数据或者指令，实现上述各个实施例对应的方法。
可以理解的是，上述各个模块可以独立设置，也可以集成，本申请实施例对此不做限定。
一种可能的方式中，该通信装置120以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置120可以采用图3所示的通信装置300的形式。
比如，图3所示的通信装置300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信装置300执行上述方法实施例中的通信方法。
具体的，图12中的处理模块1201和收发模块1202的功能/实现过程可以通过图3所示的通信装置300中的处理器301调用存储器303中存储的计算机执行指令来实现。或者，图12中的处理模块1201的功能/实现过程可以通过图3所示的通信装置300中的处理器301调用存储器303中存储的计算机执行指令来实现，图12中的收发模块1202的功能/实现过程可以通过图3所示的通信装置300中的通信接口304来实现。
由于本实施例提供的通信装置120可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，本申请实施例还提供了一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括处理器，用于实现上述任一方法实施例中的方法。在一种可能的设计中，该通信装置还包括存储器。该存储器，用于保存必要的程序指令和数据，处理器可以调用存储器中存储的程序代码以指令该通信装置执行上述任一方法实施例中的方法。当然，存储器也可以不在该通信装置中。在另一种可能的设计中，该通信装置还包括接口电路，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器。该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
可选的，如图13所示，本申请实施例还提供一种通信装置130。该通信装置130包括：处理器1302、收发器1303、存储器1301。
其中，收发器1303可以为独立设置的发送器，该发送器可用于向其他设备发送信息。该收发器也可以为独立设置的接收器，用于从其他设备接收信息。该收发器也可以是将发送、接收信息功能集成在一起的部件，本申请实施例对收发器的具体实现不做限制。
可选的，通信装置130还可以包括总线1304。其中，收发器1303、处理器1302以及存储器1301可以通过总线1304相互连接；总线1304可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线1304可以分为地址总线、数据总线、控制总线等。为便于表示，图13中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
其中，收发器1303可以执行上述方法实施例中的接收和发送类的步骤。存储器1301用 于存储数据和/或指令，处理器1302可以读取存储模块中的数据或者指令，实现上述各个实施例对应的方法。
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。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述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。所述计算机指令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，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(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。所述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以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state drive，SSD))等。本申请实施例中,计算机可以包括前面所述的装置。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种通信方法，其特征在于，所述方法包括：
    位置管理功能网元接收来自通信设备的第一消息，所述第一消息包括目标小区的标识信息；
    所述位置管理功能网元向测量接入网设备发送第二消息，所述第二消息用于请求测量终端设备发送的探测参考信号SRS，所述SRS用于确定所述终端设备切换至所述目标小区后的位置。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述位置管理功能网元接收所述SRS的测量量；
    所述位置管理功能网元根据所述SRS的测量量，确定所述终端设备切换至所述目标小区后的位置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一消息还包括第一指示信息，所述第一指示信息用于指示所述终端设备发生切换。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述位置管理功能网元向所述测量接入网设备发送所述测量接入网设备的传输接收点TRP的信息，所述TRP的信息用于指示所述测量接入网设备中用于测量所述SRS的TRP。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述方法还包括：
    所述位置管理功能网元向所述测量接入网设备发送第三指示信息，所述第三指示信息用于指示所述SRS的测量量的上报颗粒度。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述方法还包括：
    所述位置管理功能网元向目标接入网设备发送请求消息，所述请求消息用于请求所述目标接入网设备为所述终端设备配置SRS。
  7. 根据权利要求6所述的方法，其特征在于，所述请求消息包括所述SRS的周期信息和/或所述SRS的频率信息，所述周期信息用于指示所述SRS的周期，所述频率信息用于指示所述SRS的频点，或者用于指示SRS载波的频点。
  8. 根据权利要求6或7所述的方法，其特征在于，所述方法还包括：
    所述位置管理功能网元向目标接入网设备发送第四指示信息，所述第四指示信息用于指示所述目标接入网设备停止为所述终端设备配置SRS。
  9. 一种通信方法，其特征在于，所述方法包括：
    通信设备确定终端设备切换至目标小区；
    所述通信设备向位置管理功能网元发送第一消息，所述第一消息包括所述目标小区的标识信息。
  10. 根据权利要求9所述的方法，其特征在于，所述第一消息还包括第一指示信息，所述第一指示信息用于指示所述终端设备发生切换。
  11. 根据权利要求9或10所述的方法，其特征在于，所述通信设备为目标接入网设备；在所述目标接入网设备向所述位置管理功能网元发送第一消息之前，所述方法还包括：
    所述目标接入网设备接收来自源接入网设备的所述位置管理功能网元的标识信息和探测参考信号SRS的信息，所述SRS的信息用于指示所述SRS的传输特性。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述目标接入网设备接收来自所述位置管理功能网元的所述SRS的周期信息和/或所述SRS的频率信息，所述周期信息用于指示所述SRS的周期，所述频率信息用于指示所述SRS 的频点，或者用于指示SRS载波的频点。
  13. 一种通信装置，其特征在于，所述通信装置包括：接收模块和发送模块；
    所述接收模块，用于接收来自通信设备的第一消息，所述第一消息包括目标小区的标识信息；
    所述发送模块，用于向测量接入网设备发送第二消息，所述第二消息用于请求测量终端设备发送的探测参考信号SRS，所述SRS用于确定所述终端设备切换至所述目标小区后的位置。
  14. 根据权利要求13所述的通信装置，其特征在于，所述通信装置还包括：处理模块；
    所述接收模块，还用于接收所述SRS的测量量；
    所述处理模块，用于根据所述SRS的测量量，确定所述终端设备切换至所述目标小区后的位置。
  15. 根据权利要求13或14所述的通信装置，其特征在于，所述第一消息还包括第一指示信息，所述第一指示信息用于指示所述终端设备发生切换。
  16. 根据权利要求13-15任一项所述的通信装置，其特征在于，
    所述发送模块，还用于向所述测量接入网设备发送所述测量接入网设备的传输接收点TRP的信息，所述TRP的信息用于指示所述测量接入网设备中用于测量所述SRS的TRP。
  17. 根据权利要求13-16任一项所述的通信装置，其特征在于，
    所述发送模块，还用于向所述测量接入网设备发送第三指示信息，所述第三指示信息用于指示所述SRS的测量量的上报颗粒度。
  18. 根据权利要求13-17任一项所述的通信装置，其特征在于，
    所述发送模块，还用于向目标接入网设备发送请求消息，所述请求消息用于请求所述目标接入网设备为所述终端设备配置SRS。
  19. 根据权利要求18所述的通信装置，其特征在于，所述请求消息包括所述SRS的周期信息和/或所述SRS的频率信息，所述周期信息用于指示所述SRS的周期，所述频率信息用于指示所述SRS的频点，或者用于指示SRS载波的频点。
  20. 根据权利要求18或19所述的通信装置，其特征在于，
    所述发送模块，还用于向目标接入网设备发送第四指示信息，所述第四指示信息用于指示所述目标接入网设备停止为所述终端设备配置SRS。
  21. 一种通信装置，其特征在于，所述通信装置包括：处理模块和收发模块；
    所述处理模块，用于确定终端设备切换至目标小区；
    所述收发模块，用于向位置管理功能网元发送第一消息，所述第一消息包括所述目标小区的标识信息。
  22. 根据权利要求21所述的通信装置，其特征在于，所述第一消息还包括第一指示信息，所述第一指示信息用于指示所述终端设备发生切换。
  23. 根据权利要求21或22所述的通信装置，其特征在于，所述通信装置为目标接入网设备；
    所述收发模块，还用于接收来自源接入网设备的所述位置管理功能网元的标识信息和探测参考信号SRS的信息，所述SRS的信息用于指示所述SRS的传输特性。
  24. 根据权利要求23所述的通信装置，其特征在于，
    所述收发模块，还用于向所述位置管理功能网元发送所述SRS的周期信息和/或所述SRS的频率信息，所述周期信息用于指示所述SRS的周期，所述频率信息用于指示所述SRS的频 点，或者用于指示SRS载波的频点。
PCT/CN2020/106440 2020-07-31 2020-07-31 通信方法、装置及系统 WO2022021437A1 (zh)

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