WO2023000227A1 - 按需定位参考信号请求方法及装置、存储介质 - Google Patents

按需定位参考信号请求方法及装置、存储介质 Download PDF

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Publication number
WO2023000227A1
WO2023000227A1 PCT/CN2021/107701 CN2021107701W WO2023000227A1 WO 2023000227 A1 WO2023000227 A1 WO 2023000227A1 CN 2021107701 W CN2021107701 W CN 2021107701W WO 2023000227 A1 WO2023000227 A1 WO 2023000227A1
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Prior art keywords
prs
terminal
demand
configuration information
indication information
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PCT/CN2021/107701
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English (en)
French (fr)
Inventor
李小龙
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北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202180002168.4A priority Critical patent/CN115843451A/zh
Priority to EP21950484.2A priority patent/EP4376508A1/en
Priority to PCT/CN2021/107701 priority patent/WO2023000227A1/zh
Publication of WO2023000227A1 publication Critical patent/WO2023000227A1/zh

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    • 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 disclosure relates to the communication field, and in particular to a method and device for requesting an on-demand positioning reference signal, and a storage medium.
  • 5G 5th Generation Mobile Communication Technology, 5th generation mobile communication technology
  • NR New Radio, new air interface
  • the network side device needs to provide positioning assistance information to the terminal.
  • the LMF (Location Management Function, location management function) device can actively provide positioning assistance information to the terminal, wherein the base station is used to transparently transmit the positioning assistance information sent by the LMF device to the terminal.
  • the LMF device may send the positioning assistance information to the terminal according to the terminal's request.
  • the above positioning assistance information includes configuration information of a downlink PRS (Positioning Reference Signal, positioning reference signal).
  • a downlink PRS Positioning Reference Signal, positioning reference signal
  • the network side device can send the predefined PRS configuration information to the terminal.
  • the predefined PRS configuration information is used for the terminal to send the on-demand PRS request message, and the terminal can obtain the Select a piece of PRS configuration information and send a request to the network, and the network can provide the required PRS configuration information to the terminal according to the terminal's request.
  • the LMF device receives the on-demand PRS request message sent by the terminal, if the LMF device cannot provide the terminal with the requested PRS configuration information, there is currently no corresponding solution.
  • the embodiments of the present disclosure provide a method and device for requesting an on-demand positioning reference signal, and a storage medium.
  • a method for requesting an on-demand positioning reference signal is provided, the method is executed by a location management function LMF device, including:
  • the on-demand PRS request message and the response message are LTE Positioning Protocol LPP messages;
  • the on-demand PRS request message is an LPP request auxiliary data message
  • the response message is an LPP provide auxiliary data message
  • the response message includes: second PRS configuration information and first indication information;
  • the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal.
  • the response message includes: second indication information;
  • the second indication information is used to instruct the terminal to use the third PRS configuration information to perform PRS measurement
  • the third PRS configuration information is the PRS configuration information obtained before the terminal sends the on-demand PRS request message .
  • the response message includes at least one of the following: third indication information, and/or fourth indication information;
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the third indication information and/or the fourth indication information are also used to indicate
  • the terminal uses third PRS configuration information to perform PRS measurement, and the third PRS configuration information is PRS configuration information acquired before the terminal sends the on-demand PRS request message.
  • the response message includes at least one of the following: target duration, and/or, target cell identifier;
  • the target duration is used to instruct the terminal to resend the shortest interval of the on-demand PRS request
  • the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.
  • the second PRS configuration information is carried in a target information element of the response message
  • the target information element is an information element used to indicate an on-demand PRS configuration information set.
  • a method for requesting an on-demand positioning reference signal including:
  • the on-demand PRS request message and the response message are LTE Positioning Protocol LPP messages;
  • the on-demand PRS request message is an LPP request auxiliary data message
  • the response message is an LPP provide auxiliary data message
  • the response message includes: second PRS configuration information, and first indication information;
  • the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal.
  • the response message includes: second indication information;
  • the second indication information is used to instruct the terminal to use third PRS configuration information
  • the third PRS configuration information is PRS configuration information obtained before the terminal sends the on-demand PRS request message.
  • the response message includes at least one of the following: third indication information, and/or fourth indication information;
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the third indication information and/or the fourth indication information are also used to indicate
  • the terminal uses third PRS configuration information to perform PRS measurement, and the third PRS configuration information is PRS configuration information acquired before the terminal sends the on-demand PRS request message.
  • the response message further includes at least one of the following: target duration, and/or target cell identity;
  • the target duration is used to instruct the terminal to resend the shortest interval of the on-demand PRS request
  • the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.
  • an on-demand positioning reference signal requesting device the device is used for a location management function LMF device, including:
  • the receiving module is configured to receive an on-demand positioning reference signal PRS request message sent by the terminal, and the on-demand PRS request message is used to request to obtain the first PRS configuration information;
  • the first sending module is configured to send a response message to the terminal in response to determining that the first PRS configuration information cannot be provided for the terminal.
  • an on-demand positioning reference signal requesting device the device is used in a terminal, and includes:
  • the second sending module is configured to send an on-demand positioning reference signal PRS request message to the location management function LMF device, and the on-demand PRS request message is used to request to obtain the first PRS configuration information;
  • the determining module is configured to, in response to receiving the response message sent by the LMF device, determine based on the response message that the LMF device cannot provide the terminal with the first PRS configuration information.
  • a computer-readable storage medium stores a computer program, and the computer program is used to execute the on-demand positioning reference signal described in any one of the above-mentioned LMF device sides request method.
  • a computer-readable storage medium stores a computer program, and the computer program is used to execute the on-demand positioning reference signal request described in any one of the above-mentioned terminal sides method.
  • an on-demand positioning reference signal requesting device including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute any method for requesting an on-demand positioning reference signal described above at the LMF device side.
  • an on-demand positioning reference signal requesting device including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute any method for requesting an on-demand positioning reference signal described above at the terminal side.
  • the LMF device may send a response message to the terminal when it determines that the requested first PRS configuration information cannot be provided. Based on the response message, the terminal determines that the LMF device cannot provide the terminal with the requested first PRS configuration information. In the case that the LMF device cannot provide the requested first PRS configuration information for the terminal, the present disclosure provides a corresponding solution with high usability.
  • Fig. 1A to Fig. 1B are schematic flowcharts of a method for an LMF device to provide positioning assistance information for a terminal according to an exemplary embodiment.
  • Fig. 2 is a schematic flowchart of a method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 3 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 4 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 5 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 6 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 7 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 8 is a schematic flowchart of another method for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 9 is a block diagram of an on-demand positioning reference signal requesting device according to an exemplary embodiment.
  • Fig. 10 is a block diagram of another device for requesting an on-demand positioning reference signal according to an exemplary embodiment.
  • Fig. 11 is a schematic structural diagram of an on-demand positioning reference signal requesting device according to an exemplary embodiment of the present disclosure.
  • Fig. 12 is a schematic structural diagram of another device for requesting an on-demand positioning reference signal according to an exemplary embodiment of the present disclosure.
  • first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or “when” or “in response to a determination.”
  • the network-side device provides positioning assistance information for the terminal in the following manner:
  • the LMF device actively provides positioning assistance information for the terminal.
  • the LMF device may provide positioning assistance information to the terminal through an LPP (LTE Positioning Protocol, LTE Positioning Protocol) message.
  • LPP LTE Positioning Protocol, LTE Positioning Protocol
  • the LPP message providing positioning assistance information may be an LPP Provide Assistance Data (LPP provides assistance data) message.
  • the LMF device provides positioning assistance information based on the terminal request.
  • the terminal can initiate a request to the LMF device through an LPP message, wherein the LPP message requesting to obtain positioning assistance information can be an LPP Request Assistance Data (LPP request assistance data) message. Further, the LMF device provides positioning assistance information to the terminal through an LPP message based on the request message. Wherein, the LPP message providing the positioning assistance information may be an LPP Provide Assistance Data message.
  • LPP request assistance data LPP Request Assistance Data
  • Fig. 1A nor Fig. 1B shows the base station, and the role of the base station is only to transparently transmit the LPP message exchanged between the LMF device and the terminal in the above process.
  • the above-mentioned positioning assistance information includes downlink PRS configuration information, wherein the PRS configuration information includes but not limited to time-frequency resource location information where the PRS is located, and period information of the PRS.
  • on-demand PRS is proposed.
  • the network can send the on-demand PRS configuration it supports to the terminal, and the terminal can select a PRS configuration information based on the on-demand PRS configuration information provided by the network side. And send an on-demand PRS request message to the LMF device, so that the LMF device provides the terminal with required PRS configuration information based on the on-demand PRS request message.
  • the LMF device can send the predefined PRS configuration information to the terminal through an LPP message (LPP Provide Assistance Data) or a positioning system message, wherein the positioning system message is sent to the base station by the LMF, and the base station broadcasts it to the terminal.
  • LPP message LPP Provide Assistance Data
  • a positioning system message wherein the positioning system message is sent to the base station by the LMF, and the base station broadcasts it to the terminal.
  • the following situations may also exist:
  • the LMF device cannot provide the requested PRS configuration to the terminal.
  • the LMF device receives on-demand PRS request messages sent by multiple terminals, and the PRS configuration information requested by different terminals is different. In this case, how does the LMF device handle it.
  • how the LMF device rejects the on-demand PRS request message sent by the terminal may need to limit the behavior of the terminal to send the on-demand PRS request message again, or instruct the terminal to continue using the acquired PRS configuration information.
  • the present disclosure provides an on-demand location reference signal request solution.
  • the method provided by the present disclosure will be introduced first from the side of the LMF device.
  • FIG. 2 is a flow chart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used in an LMF device. The method may include the steps of:
  • step 201 an on-demand positioning reference signal PRS request message sent by a terminal is received, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • the on-demand PRS request message may be an LPP message, and in a possible implementation manner, the on-demand PRS request message may be an LPP request auxiliary data message.
  • step 202 in response to determining that the terminal cannot be provided with the first PRS configuration information, a response message is sent to the terminal.
  • the response message may be used to indicate that the LMF device cannot provide the terminal with the requested first PRS configuration information.
  • the response message may also be an LPP message.
  • the response message may provide an assistance data message for the LPP.
  • the response message may include the following information:
  • step 201 in response to determining that the terminal cannot be provided with the first PRS configuration information, a response message is sent to the terminal, where the response message includes: second PRS configuration information, and first indication information.
  • the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement
  • the second PRS configuration information is the same as the first PRS configuration requested by the terminal The information is different.
  • the LMF device when the LMF device cannot provide the terminal with the requested first PRS configuration information, it can provide the terminal with the second PRS configuration information different from the first PRS configuration information, and use the first indication information to instruct the terminal to use a different PRS configuration information.
  • the PRS measurement is performed based on the second PRS configuration information of the first PRS configuration information.
  • the terminal sends an on-demand PRS request message to the LMF device.
  • the on-demand PRS request message is used to request the first PRS configuration information.
  • the identifier of the first PRS configuration information is 1.
  • the response message also includes first indication information, and the first indication information clearly indicates that the terminal uses the second PRS configuration information to perform PRS measurement, and The second PRS configuration information is different from the first PRS configuration information requested by the terminal, so as to prevent the terminal from thinking that the LMF device sent wrong PRS configuration information.
  • the LMF device can send the second PRS configuration information and the first indication information to the terminal through a response message, instructing the terminal to use the second PRS configuration information to perform PRS measurement, so as to prevent the terminal from thinking that the LMF device sent an error and have high availability.
  • step 201 in response to determining that the terminal cannot be provided with the first PRS configuration information, a response message is sent to the terminal, where the response message includes: second indication information.
  • the second indication information is used to instruct the terminal to use third PRS configuration information to perform PRS measurement, and the third PRS configuration information is obtained before the terminal sends the on-demand PRS request message PRS configuration information.
  • the response message does not need to include the third PRS configuration information.
  • the terminal sends an on-demand PRS request message to the LMF device.
  • the on-demand PRS request message is used to request the first PRS configuration information.
  • the identifier of the first PRS configuration information is 1.
  • the LMF device receives the on-demand PRS request message , if it is determined that the terminal cannot be provided with the first PRS configuration information identified as 1, instruct the terminal to continue using the third PRS configuration information through the second indication information, where the third PRS configuration information is the terminal sending the The PRS configuration information obtained before the on-demand PRS request message, for example, the third PRS configuration information is the PRS configuration information obtained by the terminal from the positioning assistance information provided by the network side device before sending the on-demand PRS request message.
  • the LMF device since the terminal has acquired the third PRS configuration information before sending the on-demand PRS request message, the LMF device does not need to carry the third PRS configuration information in the response message, because the PRS configuration information has not changed. Signaling overhead is saved.
  • the second indication information can be used to directly instruct the terminal to use the third PRS configuration information obtained before sending the on-demand PRS request message to perform PRS measurement, and the response message does not need to carry the third PRS configuration information, which is easy to implement , high availability, saving signaling overhead.
  • step 201 in response to determining that the terminal cannot be provided with the first PRS configuration information, a response message is sent to the terminal, and the response message only includes at least one of the following: third indication information, and/or, Fourth instruction information.
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the third indication information and/or the fourth indication information are also used to instruct the terminal to use the third PRS configuration information to perform PRS measurement
  • the third PRS configuration information is the The PRS configuration information obtained before the on-demand PRS request message.
  • the third indication information and/or the fourth indication information may be used to implicitly instruct the terminal to use the third PRS configuration information obtained before sending the on-demand PRS request message to perform PRS measurement. Simple implementation and high usability.
  • a response message is sent to the terminal, and the response message includes: the second PRS configuration information, the first indication information, and the second PRS configuration information. 3. Instructions. Or, the response message includes: the second PRS configuration information, the first indication information, and the fourth indication information. Or, the response message includes: the second PRS configuration information, the first indication information, the third indication information and the fourth indication information.
  • the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement, and the second PRS configuration information is consistent with the first PRS configuration information is different.
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the terminal may determine based on the third indication information that the LMF device rejected the on-demand PRS request sent by the terminal, and determine the reason why the LMF device rejected the on-demand PRS request sent by the terminal based on the fourth indication information.
  • the terminal may use the second PRS configuration information to perform PRS measurement based on the first indication information.
  • a response message is sent to the terminal, where the response message includes: second indication information, and third indication information.
  • the response message includes: the second indication information, and the fourth indication information.
  • the response message includes: the second indication information, the third indication information and the fourth indication information.
  • the second indication information is used to instruct the terminal to use third PRS configuration information to perform PRS measurement
  • the third PRS configuration information is PRS configuration information acquired before the terminal sends the on-demand PRS request message.
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the terminal may determine based on the third indication information that the LMF device rejected the on-demand PRS request sent by the terminal, and determine the reason why the LMF device rejected the on-demand PRS request sent by the terminal based on the fourth indication information.
  • the terminal may use the acquired third PRS configuration information to perform PRS measurement based on the second indication information.
  • the LMF device when the LMF device cannot provide the requested first PRS configuration information for the terminal, the LMF device instructs the terminal to perform PRS measurement based on different PRS configuration information through different content of the response message, which has high usability.
  • the response message may include at least one of the following in addition to the information of the above different situations: target duration, and/or target cell identity.
  • the target duration is used to indicate the shortest interval duration for the terminal to resend the on-demand PRS request
  • the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.
  • the response message sent by the LMF to the terminal includes the target duration
  • the terminal may initiate an on-demand PRS request message to the LMF device again after an interval of at least the target duration.
  • the LMF will reject the on-demand PRS request message sent by the terminal.
  • the LMF device determines that the base station or TRP does not support the change of PRS configuration information according to the capability information of the base station or TRP (Transmission Receiving Point), and the response message may include the target cell ID, indicating the ID of the target cell that always rejects the on-demand PRS request sent by the terminal.
  • the base station may include one or more TRPs, which is not limited in the present disclosure.
  • the response message sent by the LMF device to the terminal may include the target duration and the target cell identifier at the same time.
  • the information content included in the response message is further illustrated as follows.
  • the LMF device determines that the base station or TRP does not support changing the PRS configuration information according to the capability information of the base station or TRP, and the response message sent by the LMF device to the terminal includes the first 3. Indication information, and target cell identification.
  • the third indication information is used to instruct the LMF device to reject the on-demand PRS request sent by the terminal.
  • the target cell identifier allows the terminal not to send an on-demand PRS request message to the LMF device when it is in the target cell.
  • the response message sent by the LMF device to the terminal includes the first Three instruction information, fourth instruction information and target duration.
  • the third instruction information is used to instruct the LMF device to reject the on-demand PRS request sent by the terminal
  • the fourth instruction information is used to instruct the LMF device to reject the on-demand PRS request sent by the terminal because other terminals are using the first PRS request.
  • PRS configuration information for positioning The target duration can be determined by the LMF device according to the time when other terminals complete positioning. After receiving the response message, the terminal sends an on-demand PRS request message to the LMF device again after an interval of at least the target duration.
  • the LMF device may include the target duration and/or the target cell identifier in the response message, so as to avoid waste of terminal resources caused by the frequent sending of on-demand PRS request messages to the LMF device by the terminal, and have high availability.
  • the second PRS configuration information may be carried in a target IE (Information Element, information element) of the response message.
  • the target IE is an IE used to indicate a set of on-demand PRS configuration information.
  • the response message provides the LPP with the assistance data message
  • the target IE provides the LPP with the IE in the assistance data message used to indicate the on-demand PRS configuration information set.
  • the IE is an IE already included in the LPP Provide Assistance Data message according to the agreement, so there is no need to add a new IE in the LPP Provide Assistance Data message to carry the second PRS configuration information. Signaling resources are saved.
  • the second PRS configuration information is carried in the target information element of the response message, and the target information element is information used to indicate the set of on-demand PRS configuration information element. The problem of resource waste caused by carrying the configuration information of the second PRS through newly added information elements is avoided.
  • FIG. 3 is a flow chart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used in a terminal.
  • the method Can include the following steps:
  • step 301 an on-demand positioning reference signal PRS request message is sent to the location management function LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • the terminal may determine a piece of PRS configuration information based on the on-demand PRS configuration information provided by the network side device, and send an on-demand PRS request message to the LMF device, requesting to obtain the first PRS configuration information.
  • step 302 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the on-demand PRS request message and the response message are LTE Positioning Protocol LPP messages.
  • the on-demand PRS request message is an LPP request auxiliary data message
  • the response message is an LPP provide auxiliary data message.
  • the response message may include the following information:
  • step 402 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information; the response message includes: The second PRS configuration information, and, the first indication information.
  • the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement
  • the second PRS configuration information is the same as the first PRS configuration requested by the terminal The information is different.
  • the LMF device when the LMF device cannot provide the terminal with the requested first PRS configuration information, it can provide the terminal with the second PRS configuration information different from the first PRS configuration information, and use the first indication information to instruct the terminal to use a different PRS configuration information.
  • the PRS measurement is performed based on the second PRS configuration information of the first PRS configuration information.
  • FIG. 4 is a flowchart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used for a terminal.
  • the method may include the following steps:
  • step 401 an on-demand positioning reference signal PRS request message is sent to the location management function LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • step 402 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the response message includes: second PRS configuration information, and, first indication information; the first indication information is used to instruct the terminal to use the second PRS configuration information to perform PRS measurement, and the second The PRS configuration information is different from the first PRS configuration information requested by the terminal.
  • step 403 based on the first indication information, the second PRS configuration information is used to perform PRS measurement.
  • the terminal may use the second PRS configuration information included in the response message to perform PRS measurement based on the first indication information therein. If the LMF device cannot provide the terminal with the requested first In the case of PRS configuration information, the terminal is allowed to use the second PRS configuration information different from the first PRS configuration information in the response message to perform PRS measurement based on the first indication information in the response message, which has high usability.
  • the above-mentioned second PRS configuration information is carried in a target information element of the response message; wherein the target information element is an information element used to indicate an on-demand PRS configuration information set.
  • step 502 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the first PRS configuration information for the terminal; the response message includes: 2. Instructions.
  • the second indication information is used to instruct the terminal to use third PRS configuration information to perform PRS measurement, and the third PRS configuration information is obtained before the terminal sends the on-demand PRS request message PRS configuration information.
  • the response message does not need to include the third PRS configuration information.
  • FIG. 5 is a flowchart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used for a terminal, and the method may include the following steps:
  • step 501 an on-demand positioning reference signal PRS request message is sent to the location management function LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • step 502 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the response message includes: second indication information; the second indication information is used to instruct the terminal to use third PRS configuration information to perform PRS measurement, and the third PRS configuration information is the The PRS configuration information obtained before the PRS request message is required.
  • step 503 based on the second indication information, the PRS measurement is performed using the third PRS configuration information.
  • the terminal may use the third PRS configuration information obtained before sending the on-demand PRS request message based on the second indication information therein to perform PRS measurement.
  • the terminal may use the third PRS configuration information obtained before sending the on-demand PRS request message to perform PRS measurement based on the second indication information in the response message, which has high usability.
  • step 602 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information; the response message only includes the following At least one item: third indication information, and/or fourth indication information.
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the third indication information and/or the fourth indication information are also used to instruct the terminal to use third PRS configuration information to perform PRS measurement, and the third PRS configuration information is The PRS configuration information obtained before the PRS request message is required.
  • FIG. 6 is a flowchart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used for a terminal, and the method may include the following steps:
  • step 601 an on-demand positioning reference signal PRS request message is sent to the location management function LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • step 602 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the response message includes: third indication information, and/or fourth indication information.
  • the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal
  • the fourth indication information is used to indicate a reason for rejecting the on-demand PRS request sent by the terminal.
  • the third indication information and/or the fourth indication information are also used to instruct the terminal to use third PRS configuration information to perform PRS measurement, and the third PRS configuration information is that the terminal sends the on-demand PRS The PRS configuration information obtained before the request message.
  • step 603 based on the third indication information and/or the fourth indication information, the PRS measurement is performed using the third PRS configuration information.
  • the terminal may use the third PRS configuration information obtained before sending the on-demand PRS request message to perform PRS measurement based on the third indication information and/or the fourth indication information therein. , high availability.
  • the response message in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information, and the response message includes: second PRS configuration information , the first indication information, and the third indication information. Or, the response message includes: the second PRS configuration information, the first indication information, and the fourth indication information. Or, the response message includes: the second PRS configuration information, the first indication information, the third indication information and the fourth indication information.
  • the terminal may use the second PRS configuration information based on the first indication information to perform PRS measurement.
  • the response message in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information, and the response message includes: second indication information, And, the third instruction information. Or, the response message includes: the second indication information, and the fourth indication information. Or, the response message includes: the second indication information, the third indication information and the fourth indication information.
  • the terminal may use the acquired third PRS configuration information to perform PRS measurement based on the second indication information.
  • the terminal when the LMF device cannot provide the terminal with the requested first PRS configuration information, the terminal can perform corresponding actions based on different information contents in the response message, which has high usability.
  • the response message may also include at least one of the following: target duration, and/or, target cell identity;
  • the target duration is used to instruct the terminal to resend the shortest interval of the on-demand PRS request
  • the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.
  • FIG. 7 is a flowchart of a method for requesting an on-demand positioning reference signal according to an embodiment, which can be used for a terminal.
  • the method may include the following steps:
  • step 701 an on-demand positioning reference signal PRS request message is sent to the location management function LMF device, and the on-demand PRS request message is used to request to obtain first PRS configuration information.
  • step 702 in response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the response message may also include the target duration and/or the target cell identifier.
  • step 703 after receiving the response message and at least the target time interval, send an on-demand PRS request message to the LMF device again; and/or, in response to determining that it is located in the target cell, no longer Send an on-demand PRS request message.
  • the terminal performs duration detection, and sends an on-demand PRS request message to the LMF device again after an interval of at least a target duration.
  • the terminal performs cell detection. When the terminal is determined to be located in the target cell, it no longer sends the on-demand PRS request message to the LMF device.
  • the terminal performs duration detection and cell detection at the same time.
  • the terminal sends the on-demand PRS request message to the LMF device again after an interval of at least the target duration and when determining that it is not in the target cell.
  • the on-demand PRS request message will not be sent to the LMF device during the period in the target cell.
  • the terminal when the terminal has not reached the target duration from receiving the response message to leaving the target cell, it may wait until the target duration expires, and then send the on-demand PRS request message to the LMF device again.
  • the LMF device may include the target duration and/or the target cell identifier in the response message, and based on the indication of the response message, the terminal avoids waste of terminal resources caused by frequently sending on-demand PRS request messages to the LMF device, and has high availability .
  • FIG. 8 is a flowchart of a method for requesting an on-demand positioning reference signal according to an embodiment. The method may include the following steps:
  • step 801 the terminal sends an on-demand positioning reference signal PRS request message to the LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.
  • step 802 the LMF device sends a response message to the terminal in response to determining that the terminal cannot be provided with the first PRS configuration information.
  • step 803 based on the response message, the terminal determines that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the terminal can perform different actions.
  • the specific process is the same as the process in the foregoing embodiment, and will not be repeated here.
  • the LMF device may send a response message to the terminal when it determines that the requested first PRS configuration information cannot be provided. Based on the response message, the terminal determines that the LMF device cannot provide the terminal with the requested first PRS configuration information. In the case that the LMF device cannot provide the requested first PRS configuration information for the terminal, the present disclosure provides a corresponding solution with high usability.
  • the present disclosure also provides embodiments of apparatuses for implementing application functions.
  • FIG. 9 is a block diagram of an on-demand positioning reference signal requesting device according to an exemplary embodiment.
  • the device is used for a location management function LMF device, including:
  • the receiving module 901 is configured to receive an on-demand positioning reference signal PRS request message sent by the terminal, and the on-demand PRS request message is used to request to obtain first PRS configuration information;
  • the first sending module 902 is configured to send a response message to the terminal in response to determining that the first PRS configuration information cannot be provided for the terminal.
  • FIG. 10 is a block diagram of an on-demand positioning reference signal requesting device according to an exemplary embodiment.
  • the device is used for a terminal and includes:
  • the second sending module 1001 is configured to send an on-demand positioning reference signal PRS request message to a location management function LMF device, where the on-demand PRS request message is used to request to obtain first PRS configuration information;
  • the determining module 1002 is configured to, in response to receiving the response message sent by the LMF device, determine based on the response message that the LMF device cannot provide the terminal with the first PRS configuration information.
  • the device embodiment since it basically corresponds to the method embodiment, for relevant parts, please refer to the part of the description of the method embodiment.
  • the device embodiments described above are only illustrative, and the above-mentioned units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in a place, or can also be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. It can be understood and implemented by those skilled in the art without creative effort.
  • the present disclosure also provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute any one of the above methods on the LMF device side.
  • the present disclosure also provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute any one of the methods described above for the terminal side.
  • an on-demand positioning reference signal requesting device including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute any one of the methods described above on the LMF device side.
  • FIG. 11 is a schematic structural diagram of an on-demand positioning reference signal requesting device 1100 according to an exemplary embodiment.
  • Apparatus 1100 may be provided as an LMF device.
  • the device 1100 includes a processing component 1122 , a wireless transmitting/receiving component 1124 , an antenna component 1126 , and a signal processing part specific to a wireless interface.
  • the processing component 1122 may further include at least one processor.
  • One of the processors in the processing component 1122 may be configured to execute any one of the methods for requesting an on-demand positioning reference signal described above.
  • an on-demand positioning reference signal requesting device including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute any one of the methods for requesting on-demand positioning reference signals at the terminal side.
  • Fig. 12 is a block diagram of an on-demand positioning reference signal requesting device 1200 according to an exemplary embodiment.
  • the device 1200 may be a terminal such as a mobile phone, a tablet computer, an e-book reader, a multimedia playback device, a wearable device, a vehicle user device, an ipad, a smart TV, or an unmanned driving device.
  • apparatus 1200 may include one or more of the following components: processing component 1202, memory 1204, power supply component 1206, multimedia component 1208, audio component 1210, input/output (I/O) interface 1212, sensor component 1216, and Communication component 1218.
  • the processing component 1202 generally controls the overall operations of the device 1200, such as those associated with display, phone calls, data random access, camera operations, and recording operations.
  • the processing component 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the above channel monitoring method.
  • processing component 1202 may include one or more modules that facilitate interaction between processing component 1202 and other components.
  • processing component 1202 may include a multimedia module to facilitate interaction between multimedia component 1208 and processing component 1202 .
  • the processing component 1202 may read executable instructions from the memory, so as to implement the steps of a channel monitoring method provided in the above-mentioned embodiments.
  • the memory 1204 is configured to store various types of data to support operations at the device 1200 . Examples of such data include instructions for any application or method operating on device 1200, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 1204 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 1206 provides power to various components of the device 1200 .
  • Power components 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1200 .
  • the multimedia component 1208 includes a display screen providing an output interface between the device 1200 and the user.
  • the multimedia component 1208 includes a front camera and/or a rear camera.
  • the front camera and/or the rear camera can receive external multimedia data.
  • Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 1210 is configured to output and/or input audio signals.
  • the audio component 1210 includes a microphone (MIC), which is configured to receive external audio signals when the device 1200 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 1204 or sent via communication component 1218 .
  • the audio component 1210 also includes a speaker for outputting audio signals.
  • the I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 1216 includes one or more sensors for providing various aspects of status assessment for device 1200 .
  • the sensor component 1216 can detect the open/closed state of the device 1200, the relative positioning of components, such as the display and keypad of the device 1200, and the sensor component 1216 can also detect a change in the position of the device 1200 or a component of the device 1200 , the presence or absence of user contact with the device 1200 , the device 1200 orientation or acceleration/deceleration and the temperature change of the device 1200 .
  • Sensor assembly 1216 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 1216 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications.
  • the sensor component 1216 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 1218 is configured to facilitate wired or wireless communication between the apparatus 1200 and other devices.
  • the device 1200 can access wireless networks based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof.
  • the communication component 1218 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1218 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • apparatus 1200 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Realized by a gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute any of the channel monitoring methods described above on the terminal side.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable Realized by a gate array
  • controller a controller
  • microcontroller a microcontroller
  • microprocessor or other electronic components and is used to execute any of the channel monitoring methods described above on the terminal side.
  • non-transitory machine-readable storage medium comprising instructions, such as the memory 1204 comprising instructions, executable by the processor 1220 of the apparatus 1200 to accomplish the above-described on-demand positioning reference signal request method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

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Abstract

本公开提供一种按需定位参考信号请求方法及装置、存储介质，其中，所述按需定位参考信号请求方法包括：接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。本公开在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，提供了相应解决方案，可用性高。

Description

按需定位参考信号请求方法及装置、存储介质 技术领域
本公开涉及通信领域，尤其涉及按需定位参考信号请求方法及装置、存储介质。
背景技术
5G(5th Generation Mobile Communication Technology，第5代移动通信技术)NR(New Radio，新空口)引入了多种定位技术，可以实现对终端的定位。对于其中的一些定位技术，网络侧设备均需要向终端提供定位辅助信息。在一种可能的实现方式中，LMF(Location Management Function，定位管理功能)设备可以主动向终端提供定位辅助信息，其中，基站用于透传LMF设备发送给终端的定位辅助信息。在另一种可能的实现方式中，LMF设备可以根据终端请求向该终端发送定位辅助信息。
上述定位辅助信息包含了下行PRS(Positioning Reference Signal，定位参考信号)的配置信息。
在on-demand(按需)PRS的讨论中，确定网络侧设备可以将预定义的PRS配置信息发送给终端，该预定义的PRS配置信息用于终端发送on-demand PRS请求消息，终端可以从中选择一个PRS配置信息并向网络发送请求，网络可以根据终端请求向终端提供所需要的PRS配置信息。
但是，LMF设备收到终端发送的on-demand PRS请求消息后，在LMF设备不能为该终端提供其所请求的PRS配置信息的情况下，目前还没有相应的方案。
发明内容
为克服相关技术中存在的问题，本公开实施例提供一种按需定位参考信号请求方法及装置、存储介质。
根据本公开实施例的第一方面，提供一种按需定位参考信号请求方法，所述方法由定位管理功能LMF设备执行，包括：
接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
在一些可选实施例中，所述按需PRS请求消息与所述应答消息为LTE定位协议LPP消息；
其中，所述按需PRS请求消息为LPP请求辅助数据消息，所述应答消息为LPP提供辅助数据消息。
可选地，所述应答消息包括：第二PRS配置信息和第一指示信息；
其中，所述第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
可选地，所述应答消息包括：第二指示信息；
其中，所述第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
可选地，所述应答消息包括以下至少一项：第三指示信息，和/或，第四指示信息；
其中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
可选地，在所述应答消息中只包括所述第三指示信息和/或所述第四指示信息的情况下，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
可选地，所述应答消息包括以下至少一项：目标时长，和/或，目标小 区标识；
其中，所述目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
可选地，所述应答消息中包括第二PRS配置信息时，所述第二PRS配置信息携带在所述应答消息的目标信息元素中；
其中，所述目标信息元素是用于指示按需PRS配置信息集合的信息元素。
根据本公开实施例的第二方面，提供一种按需定位参考信号请求方法，所述方法由终端执行，包括：
向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
可选地，所述按需PRS请求消息与所述应答消息为LTE定位协议LPP消息；
其中，所述按需PRS请求消息为LPP请求辅助数据消息，所述应答消息为LPP提供辅助数据消息。
可选地，所述应答消息包括：第二PRS配置信息，和，第一指示信息；
其中，所述第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
可选地，还包括：
基于所述第一指示信息，使用所述第二PRS配置信息，进行PRS测量。
可选地，所述应答消息包括：第二指示信息；
其中，所述第二指示信息用于指示所述终端使用第三PRS配置信息， 所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
可选地，还包括：
基于所述第二指示信息，使用所述第三PRS配置信息，进行PRS测量。
可选地，所述应答消息包括以下至少一项：第三指示信息，和/或，第四指示信息；
其中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
可选地，在所述应答消息中只包括所述第三指示信息和/或所述第四指示信息的情况下，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
可选地，还包括：
基于所述第三指示信息和所述第四指示消息中的至少一项，使用所述第三PRS配置信息，进行PRS测量。
可选地，所述应答消息还包括以下至少一项：目标时长，和/或，目标小区标识；
其中，所述目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
可选地，还包括以下至少一项：
在接收到所述应答消息后至少间隔所述目标时长时，再次向所述LMF设备发送按需PRS请求消息；和/或，
响应于确定位于所述目标小区内，不再发送按需PRS请求消息。
根据本公开实施例的第三方面，提供一种按需定位参考信号请求装置，所述装置用于定位管理功能LMF设备，包括：
接收模块，被配置为接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
第一发送模块，被配置为响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
根据本公开实施例的第四方面，提供一种按需定位参考信号请求装置，所述装置用于终端，包括：
第二发送模块，被配置为向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
确定模块，被配置为响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
根据本公开实施例的第五方面，提供一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述LMF设备侧任一项所述的按需定位参考信号请求方法。
根据本公开实施例的第六方面，提供一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述终端侧任一项所述的按需定位参考信号请求方法。
根据本公开实施例的第七方面，提供一种按需定位参考信号请求装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为用于执行上述LMF设备侧任一项所述的按需定位参考信号请求方法。
根据本公开实施例的第八方面，提供一种按需定位参考信号请求装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为用于执行上述终端侧任一项所述的按需定位参考信号请求方法。
本公开的实施例提供的技术方案可以包括以下有益效果：
本公开实施例中，LMF设备可以在接收到终端发送的按需PRS请求消息后，确定无法为其提供所请求的第一PRS配置信息的情况下，向终端发送应答消息。终端基于该应答消息，确定LMF设备无法为终端提供所请求的第一PRS配置信息。本公开在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，提供了相应解决方案，可用性高。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1A至图1B是根据一示例性实施例示出的LMF设备为终端提供定位辅助信息的方法流程示意图。
图2是根据一示例性实施例示出的一种按需定位参考信号请求方法流程示意图。
图3是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图4是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图5是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图6是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图7是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图8是根据一示例性实施例示出的另一种按需定位参考信号请求方法流程示意图。
图9是根据一示例性实施例示出的一种按需定位参考信号请求装置框图。
图10是根据一示例性实施例示出的另一种按需定位参考信号请求装置框图。
图11是本公开根据一示例性实施例示出的一种按需定位参考信号请求装置的一结构示意图。
图12是本公开根据一示例性实施例示出的另一种按需定位参考信号请求装置的一结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含至少一个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开范围的情况下，第一信息也可以被 称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
目前，网络侧设备为终端提供定位辅助信息的方式如下：
第一种方式，由LMF设备主动为终端提供定位辅助信息。
参照图1A所示，LMF设备可以通过LPP(LTEPositioningProtocol，LTE定位协议)消息向终端提供定位辅助信息。其中，提供定位辅助信息的LPP消息可以为LPP Provide Assistance Data(LPP提供辅助数据)消息。
第二种方式，由LMF设备基于终端请求提供定位辅助信息。
参照图1B所示，终端可以通过LPP消息向LMF设备发起请求，其中，请求获取定位辅助信息的LPP消息可以为LPP Request Assistance Data(LPP请求辅助数据)消息。进一步地，LMF设备基于该请求消息，通过LPP消息向终端提供定位辅助信息。其中，提供定位辅助信息的LPP消息可以为LPP Provide Assistance Data消息。
图1A和图1B中均未示出基站，基站的作用只用于在上述过程中透传LMF设备与终端之间交互的LPP消息。
在本公开实施例中，上述定位辅助信息包括了下行PRS配置信息，其中，PRS配置信息包括但不限于PRS所在的时频资源位置信息，和，PRS的周期信息等。
为了更进一步提升网络效率和定位精度，提出了按需PRS，网络可以将其支持的按需PRS配置发送给终端，终端可以基于网络侧提供的按需PRS配置信息，在其中选择一个PRS配置信息并向LMF设备发送按需PRS请求消息，以便LMF设备基于该按需PRS请求消息，向终端提供其所需要的PRS配置信息。在本公开实施例中，LMF设备可以通过LPP消息(LPP Provide Assistance Data)或定位系统消息将预定义的PRS配置信息发送给终端，其中定位系统消息由LMF发送给基站，基站广播发送给终端。
但是，当LMF设备收到终端发送的按需PRS请求消息后，除了LMF设备能够向终端提供其所请求的PRS配置信息的情况之外，可能还会存在以下的情况：
LMF设备不能向终端提供其所请求的PRS配置。例如，LMF设备收到多个终端发送的按需PRS请求消息，且不同终端请求的PRS配置信息不同。此种情况下，LMF设备如何处理。
以及，LMF设备如何拒绝终端发送的按需PRS请求消息，可能需要对终端再次发送按需PRS请求消息的行为进行限定，或者指示终端继续使用已获取的PRS配置信息。
为了解决上述技术问题，本公开提供了一种按需定位参考信号请求方案。下面先从LMF设备侧介绍一下本公开提供的方法。
本公开实施例提供了一种按需定位参考信号请求方法，参照图2所示，图2是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于LMF设备，该方法可以包括以下步骤：
在步骤201中，接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在本公开实施例中，按需PRS请求消息可以为LPP消息，在一个可能的实现方式中，按需PRS请求消息可以为LPP请求辅助数据消息。
在步骤202中，响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
在本公开实施例中，该应答消息可以用于指示LMF设备无法为终端提供其所请求的第一PRS配置信息。该应答消息也可以为LPP消息。在一个可能的实现方式中，该应答消息可以为LPP提供辅助数据消息。
上述实施例中，在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，提供了相应解决方案，可用性高。
在一些可选实施例中，应答消息中可以包括以下信息：
其中，在步骤201中，响应于确定无法为所述终端提供所述第一PRS 配置信息，向所述终端发送应答消息，应答消息中包括：第二PRS配置信息，和，第一指示信息。
在本公开实施例中，第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
即LMF设备在无法为终端提供其所请求的第一PRS配置信息的情况下，可以为终端提供不同于第一PRS配置信息的第二PRS配置信息，并通过第一指示信息，指示终端使用不同于第一PRS配置信息的第二PRS配置信息进行PRS测量。
例如，终端向LMF设备发送on-demand PRS请求消息，该按需PRS请求消息用于请求第一PRS配置信息，第一PRS配置信息的标识为1，LMF设备收到该按需PRS请求消息后，由于LMF设备收到多个终端发送的按需PRS请求消息，且多个终端请求的PRS配置信息不相同，则LMF设备只能满足部分终端的请求，LMF设备在不能向该终端提供标识为1的第一PRS配置信息的情况下，向终端提供标识为2的第二PRS配置信息。LMF设备通过应答消息将第二PRS配置信息提供给终端的同时，该应答消息中还包含了第一指示信息，通过第一指示信息明确指示终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同，避免终端认为是LMF设备发送了错误的PRS配置信息的情况。
上述实施例中，LMF设备可以通过应答消息将第二PRS配置信息和第一指示信息发送给终端，指示终端使用第二PRS配置信息进行PRS测量，避免终端认为LMF设备发送错误，可用性高。
其中，在步骤201中，响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息，应答消息包括：第二指示信息。
在本公开实施例中，第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需 PRS请求消息之前已获取的PRS配置信息。相应地，为了节省信令资源，应答消息中无需包括第三PRS配置信息。
例如，终端向LMF设备发送on-demand PRS请求消息，该按需PRS请求消息用于请求第一PRS配置信息，第一PRS配置信息的标识为1，LMF设备收到该按需PRS请求消息后，确定不能向该终端提供标识为1的第一PRS配置信息的情况下，通过第二指示信息，指示终端继续使用第三PRS配置信息，其中，第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息，例如第三PRS配置信息是终端在发送按需PRS请求消息之前，从网络侧设备提供的定位辅助信息中获取的PRS配置信息。
在本公开实施例中，由于终端在发送按需PRS请求消息之前，已经获取了第三PRS配置信息，因此LMF设备无需在应答消息中携带第三PRS配置信息，用于PRS配置信息没有改变，节省了信令开销。
上述实施例中，可以通过第二指示信息直接指示终端使用在发送按需PRS请求消息之前已经获取的第三PRS配置信息，进行PRS测量，且应答消息中无需携带第三PRS配置信息，实现简便，可用性高，节省了信令开销。
其中，在步骤201中，响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息，应答消息只包括以下至少一项：第三指示信息，和/或，第四指示信息。
在本公开实施例中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
此种情况下，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
上述实施例中，可以通过第三指示信息和/或第四指示信息隐式指示终 端使用在发送按需PRS请求消息之前已获取的第三PRS配置信息，进行PRS测量。实现简便，可用性高。
其中，在步骤201中，响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息，应答消息中包括：第二PRS配置信息，第一指示信息，以及第三指示信息。或，应答消息中包括：第二PRS配置信息，第一指示信息，以及第四指示信息。或，应答消息中包括：第二PRS配置信息，第一指示信息，第三指示信息以及第四指示信息。
在本公开实施例中，所述第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
终端在接收到应答消息后，可以基于第三指示信息确定LMF设备拒绝了终端发送的按需PRS请求，基于第四指示信息确定LMF设备拒绝该终端发送的按需PRS请求的原因。
在此种情况下，终端可以基于第一指示信息，使用第二PRS配置信息进行PRS测量。
其中，在步骤201中，响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息，应答消息中包括：第二指示信息，以及，第三指示信息。或，应答消息中包括：第二指示信息，以及，第四指示信息。或，应答消息中包括：第二指示信息，第三指示信息以及第四指示信息。
其中，第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
终端在接收到应答消息后，可以基于第三指示信息确定LMF设备拒绝了终端发送的按需PRS请求，基于第四指示信息确定LMF设备拒绝该终端发送的按需PRS请求的原因。
在此种情况下，终端可以基于第二指示信息，使用已获取的第三PRS配置信息进行PRS测量。
上述实施例中，LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，由LMF设备通过应答消息的不同内容指示终端基于不同的PRS配置信息，进行PRS测量，可用性高。
在一些可选实施例中，应答消息中除了可以包括上述不同情况的信息之外，还可以包括以下至少一项：目标时长，和/或，目标小区标识。
其中，目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
在一个可能的实现方式中，LMF发送给终端的应答消息中包括目标时长，则终端可以至少间隔目标时长之后，再次向LMF设备发起按需PRS请求消息。在该目标时长对应的时间段内，LMF会拒绝终端发送的按需PRS请求消息。
在另一个可能的实现方式中，LMF设备根据基站或TRP(Transmission Receiving Point，传送接收点)的能力信息，确定该基站或TRP不支持PRS配置信息的更改，则在应答消息中可以包括目标小区标识，指示始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。其中，基站可以包括一个或多个TRP，本公开对此不作限定。
在另一个可能的实现方式中，LMF设备发送给终端的应答消息中可以同时包括目标时长和目标小区标识。
对应答消息所包括的信息内容进一步举例说明如下。
例如，LMF设备收到终端发送的on-demand PRS请求消息后，LMF设备根据基站或TRP的能力信息，确定基站或TRP不支持改变PRS配置 信息，则LMF设备发送给终端的应答消息中包括第三指示信息，以及目标小区标识。其中，第三指示信息用于指示LMF设备拒绝所述终端发送的按需PRS请求。目标小区标识可以让终端在处于该目标小区时，无需向LMF设备发送按需PRS请求消息。
再例如，LMF设备收到终端发送的on-demand PRS请求消息后，由于其他终端正在使用该终端所请求的第一PRS配置信息进行定位，则，LMF设备向该终端发送的应答消息中包括第三指示信息，第四指示信息和目标时长。其中，第三指示信息用于指示LMF设备拒绝所述终端发送的按需PRS请求，第四指示信息用于指示LMF设备拒绝该终端发送的按需PRS请求的原因为其他终端正在使用该第一PRS配置信息进行定位。目标时长可以由LMF设备可以根据其他终端完成定位的时间来确定。终端接收到该应答消息后，至少间隔目标时长后，再次向LMF设备发送按需PRS请求消息。
以上仅为示例性说明，应答消息中所包括的各种信息内容均应属于本公开的保护范围。
上述实施例中，LMF设备可以在应答消息中包括目标时长和/或目标小区标识，避免终端频繁向LMF设备发送按需PRS请求消息所造成的终端资源的浪费，可用性高。
在一些可选实施例中，在LMF设备发送的应答消息中包括第二PRS配置信息的情况下，第二PRS配置信息可以携带在应答消息的目标IE(Information Element，信息元素)中。其中，所述目标IE是用于指示按需PRS配置信息集合的IE。
在一个可能的实现方式中，应答消息为LPP提供辅助数据消息，目标IE为LPP提供辅助数据消息中用于指示按需PRS配置信息集合的IE。该IE是按照协议约定，LPP提供辅助数据消息中已经包含的IE，因此无需在LPP提供辅助数据消息中添加新的IE来携带第二PRS配置信息。节省了信令资源。
上述实施例中，应答消息中包括第二PRS配置信息时，所述第二PRS配置信息携带在所述应答消息的目标信息元素中，目标信息元素是用于指示按需PRS配置信息集合的信息元素。避免通过新增加的信息元素来携带第二PRS配置信息所带来的资源浪费问题。
下面再从终端侧介绍一下本公开提供的按需定位参考信号请求方法。
本公开实施例提供了一种按需定位参考信号请求方法，参照图3所示，图3是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于终端，该方法可以包括以下步骤：
在步骤301中，向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在本公开实施例中，终端可以基于网络侧设备提供的按需PRS配置信息，从其中确定一个PRS配置信息，并向LMF设备发送按需PRS请求消息，请求获取第一PRS配置信息。
在步骤302中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
上述实施例中，在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，提供了相应解决方案，可用性高。
在一些可选实施例中，所述按需PRS请求消息与所述应答消息为LTE定位协议LPP消息。可选地，所述按需PRS请求消息为LPP请求辅助数据消息，所述应答消息为LPP提供辅助数据消息。
在一些可选实施例中，应答消息中可以包括以下信息：
其中，在步骤402中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息；应答消息中包括：第二PRS配置信息，和，第一指示信息。
在本公开实施例中，第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求 获取的所述第一PRS配置信息不同。
即LMF设备在无法为终端提供其所请求的第一PRS配置信息的情况下，可以为终端提供不同于第一PRS配置信息的第二PRS配置信息，并通过第一指示信息，指示终端使用不同于第一PRS配置信息的第二PRS配置信息进行PRS测量。
相应地，参照图4所示，图4是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于终端，该方法可以包括以下步骤：
在步骤401中，向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在步骤402中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
其中，所述应答消息包括：第二PRS配置信息，和，第一指示信息；所述第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
在步骤403中，基于所述第一指示信息，使用所述第二PRS配置信息，进行PRS测量。
上述实施例中，终端在接收到应答消息后，可以基于其中的第一指示信息，使用应答消息中包括的第二PRS配置信息，进行PRS测量，在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，让终端基于应答消息中的第一指示信息，使用应答消息中不同于第一PRS配置信息的第二PRS配置信息进行PRS测量，可用性高。
在一个可能的实现方式中，上述第二PRS配置信息携带在所述应答消息的目标信息元素中；其中，所述目标信息元素是用于指示按需PRS配置信息集合的信息元素。
其中，在步骤502中，响应于接收到所述LMF设备发送的应答消息， 基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息；应答消息包括：第二指示信息。
在本公开实施例中，第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。相应地，为了节省信令资源，应答消息中无需包括第三PRS配置信息。
相应地，参照图5所示，图5是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于终端，该方法可以包括以下步骤：
在步骤501中，向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在步骤502中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
其中，所述应答消息包括：第二指示信息；所述第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
在步骤503中，基于所述第二指示信息，使用所述第三PRS配置信息，进行PRS测量。
上述实施例中，终端在接收到应答消息后，可以基于其中的第二指示信息，使用在发送按需PRS请求消息之前已获取的第三PRS配置信息，进行PRS测量，在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，让终端基于应答消息中的第二指示信息，使用在发送按需PRS请求消息之前已获取的第三PRS配置信息，进行PRS测量，可用性高。
其中，在步骤602中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息；应答消息只包括以下至少一项：第三指示信息，和/或，第四指示信息。
在本公开实施例中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
进一步地，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
相应地，参照图6所示，图6是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于终端，该方法可以包括以下步骤：
在步骤601中，向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在步骤602中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
其中，所述应答消息包括：第三指示信息，和/或，第四指示信息。所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。且所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
在步骤603中，基于所述第三指示信息和/或第四指示信息，使用所述第三PRS配置信息，进行PRS测量。
上述实施例中，终端在接收到应答消息后，可以基于其中的第三指示信息和/或第四指示信息，使用在发送按需PRS请求消息之前已获取的第三PRS配置信息，进行PRS测量，可用性高。
其中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息，应答消息中包括：第二PRS配置信息，第一指示信息，以及第三指示信息。 或，应答消息中包括：第二PRS配置信息，第一指示信息，以及第四指示信息。或，应答消息中包括：第二PRS配置信息，第一指示信息，第三指示信息以及第四指示信息。
与图4所示的过程类似的，终端可以基于第一指示信息，使用第二PRS配置信息，进行PRS测量。
其中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息，应答消息中包括：第二指示信息，以及，第三指示信息。或，应答消息中包括：第二指示信息，以及，第四指示信息。或，应答消息中包括：第二指示信息，第三指示信息以及第四指示信息。
与图5所示的过程类似的，终端可以基于第二指示信息，使用已获取的第三PRS配置信息进行PRS测量。
上述实施例中，在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，终端可以基于应答消息中的不同信息内容执行对应的动作，可用性高。
在一些可选实施例中，应答消息还可以包括以下至少一项：目标时长，和/或，目标小区标识；
其中，所述目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
相应地，参照图7所示，图7是根据一实施例示出的一种按需定位参考信号请求方法流程图，可以用于终端，该方法可以包括以下步骤：
在步骤701中，向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在步骤702中，响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
其中，应答消息中除了包括上述指示信息之外，还可以包括目标时长，和/或，目标小区标识。
在步骤703中，在接收到所述应答消息后至少间隔所述目标时长时，再次向所述LMF设备发送按需PRS请求消息；和/或，响应于确定位于所述目标小区内，不再发送按需PRS请求消息。
在一个可能的实现方式中，终端进行时长检测，至少间隔目标时长后，再次向LMF设备发送按需PRS请求消息。
在一个可能的实现方式中，终端进行小区检测。终端在确定位于目标小区内的情况下，不再向LMF设备发送按需PRS请求消息。
在另一个可能的实现方式中，终端同时进行时长检测和小区检测。
例如，终端至少间隔目标时长后，且确定自身未处于目标小区内的情况下，向LMF设备再次发送按需PRS请求消息。
再例如，终端间隔目标时长后，运动到目标小区内，则在该目标小区内的期间不会再向LMF设备发送按需PRS请求消息。
再例如，终端从接收到应答消息到离开目标小区时，还未达到目标时长，可以等到目标时长计时结束时，再次向LMF设备发送按需PRS请求消息。
以上仅示例性说明，终端基于应答消息执行相应动作的方案均应属于本公开的保护范围。
上述实施例中，LMF设备可以在应答消息中包括目标时长和/或目标小区标识，终端基于应答消息的指示，避免频繁向LMF设备发送按需PRS请求消息所造成的终端资源的浪费，可用性高。
在一些可选实施例中，参照图8所示，图8是根据一实施例示出的一种按需定位参考信号请求方法流程图，该方法可以包括以下步骤：
在步骤801中，终端向LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息。
在步骤802中，LMF设备响应于确定无法为所述终端提供所述第一 PRS配置信息，向所述终端发送应答消息。
在步骤803中，终端基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
当然，在应答消息包括不同信息内容的情况下，终端可以执行不同的动作。具体过程与上述实施例中的过程一致，在此不再赘述。
上述实施例中，LMF设备可以在接收到终端发送的按需PRS请求消息后，确定无法为其提供所请求的第一PRS配置信息的情况下，向终端发送应答消息。终端基于该应答消息，确定LMF设备无法为终端提供所请求的第一PRS配置信息。本公开在LMF设备无法为终端提供所请求的第一PRS配置信息的情况下，提供了相应解决方案，可用性高。
与前述应用功能实现方法实施例相对应，本公开还提供了应用功能实现装置的实施例。
参照图9，图9是根据一示例性实施例示出的一种按需定位参考信号请求装置框图，所述装置用于定位管理功能LMF设备，包括：
接收模块901，被配置为接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
第一发送模块902，被配置为响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
参照图10，图10是根据一示例性实施例示出的一种按需定位参考信号请求装置框图，所述装置用于终端，包括：
第二发送模块1001，被配置为向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
确定模块1002，被配置为响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处 参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本公开方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
相应地，本公开还提供了一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述用于LMF设备侧任一所述的方法。
相应地，本公开还提供了一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述用于终端侧任一所述的方法。
相应地，本公开还提供了一种按需定位参考信号请求装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为用于执行上述LMF设备侧任一所述的方法。
如图11所示，图11是根据一示例性实施例示出的一种按需定位参考信号请求装置1100的一结构示意图。装置1100可以被提供为LMF设备。参照图11，装置1100包括处理组件1122、无线发射/接收组件1124、天线组件1126、以及无线接口特有的信号处理部分，处理组件1122可进一步包括至少一个处理器。
处理组件1122中的其中一个处理器可以被配置为用于执行上述任一所述的按需定位参考信号请求方法。
相应地，本公开还提供了一种按需定位参考信号请求装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为用于执行上述终端侧任一所述的按需定位 参考信号请求方法。
图12是根据一示例性实施例示出的一种按需定位参考信号请求装置1200的框图。例如装置1200可以是手机、平板电脑、电子书阅读器、多媒体播放设备、可穿戴设备、车载用户设备、ipad、智能电视、无人驾驶设备等终端。
参照图12，装置1200可以包括以下一个或多个组件：处理组件1202，存储器1204，电源组件1206，多媒体组件1208，音频组件1210，输入/输出(I/O)接口1212，传感器组件1216，以及通信组件1218。
处理组件1202通常控制装置1200的整体操作，诸如与显示，电话呼叫，数据随机接入，相机操作和记录操作相关联的操作。处理组件1202可以包括一个或多个处理器1220来执行指令，以完成上述的信道监听方法的全部或部分步骤。此外，处理组件1202可以包括一个或多个模块，便于处理组件1202和其他组件之间的交互。例如，处理组件1202可以包括多媒体模块，以方便多媒体组件1208和处理组件1202之间的交互。又如，处理组件1202可以从存储器读取可执行指令，以实现上述各实施例提供的一种信道监听方法的步骤。
存储器1204被配置为存储各种类型的数据以支持在装置1200的操作。这些数据的示例包括用于在装置1200上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1204可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1206为装置1200的各种组件提供电力。电源组件1206可以包括电源管理系统，一个或多个电源，及其他与为装置1200生成、管理和分配电力相关联的组件。
多媒体组件1208包括在所述装置1200和用户之间的提供一个输出接 口的显示屏。在一些实施例中，多媒体组件1208包括一个前置摄像头和/或后置摄像头。当装置1200处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1210被配置为输出和/或输入音频信号。例如，音频组件1210包括一个麦克风(MIC)，当装置1200处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1204或经由通信组件1218发送。在一些实施例中，音频组件1210还包括一个扬声器，用于输出音频信号。
I/O接口1212为处理组件1202和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1216包括一个或多个传感器，用于为装置1200提供各个方面的状态评估。例如，传感器组件1216可以检测到装置1200的打开/关闭状态，组件的相对定位，例如所述组件为装置1200的显示器和小键盘，传感器组件1216还可以检测装置1200或装置1200一个组件的位置改变，用户与装置1200接触的存在或不存在，装置1200方位或加速/减速和装置1200的温度变化。传感器组件1216可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1216还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1216还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1218被配置为便于装置1200和其他设备之间有线或无线方式的通信。装置1200可以接入基于通信标准的无线网络，如Wi-Fi，2G，3G，4G，5G或6G，或它们的组合。在一个示例性实施例中，通信组件1218经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1218还包括近场通信(NFC) 模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置1200可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述终端侧任一所述的信道监听方法。
在示例性实施例中，还提供了一种包括指令的非临时性机器可读存储介质，例如包括指令的存储器1204，上述指令可由装置1200的处理器1220执行以完成上述按需定位参考信号请求方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或者惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (25)

  1. 一种按需定位参考信号请求方法，其特征在于，所述方法由定位管理功能LMF设备执行，包括：
    接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
    响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
  2. 根据权利要求1所述的方法，其特征在于，所述按需PRS请求消息与所述应答消息为LTE定位协议LPP消息；
    其中，所述按需PRS请求消息为LPP请求辅助数据消息，所述应答消息为LPP提供辅助数据消息。
  3. 根据权利要求1所述的方法，其特征在于，所述应答消息包括：第二PRS配置信息和第一指示信息；
    其中，所述第一指示信息用于指示所述终端使用所述第二PRS配置信息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
  4. 根据权利要求1所述的方法，其特征在于，所述应答消息包括：第二指示信息；
    其中，所述第二指示信息用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述应答消息包括以下至少一项：第三指示信息，和/或，第四指示信息；
    其中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
  6. 根据权利要求5所述的方法，其特征在于，在所述应答消息中只包 括所述第三指示信息和/或所述第四指示信息的情况下，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
  7. 根据权利要求5所述的方法，其特征在于，所述应答消息包括以下至少一项：目标时长，和/或，目标小区标识；
    其中，所述目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
  8. 根据权利要求1所述的方法，其特征在于，所述应答消息中包括第二PRS配置信息时，所述第二PRS配置信息携带在所述应答消息的目标信息元素中；
    其中，所述目标信息元素是用于指示按需PRS配置信息集合的信息元素IE。
  9. 一种按需定位参考信号方法，其特征在于，所述方法由终端执行，包括：
    向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
    响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
  10. 根据权利要求9所述的方法，其特征在于，所述按需PRS请求消息与所述应答消息为LTE定位协议LPP消息；
    其中，所述按需PRS请求消息为LPP请求辅助数据消息，所述应答消息为LPP提供辅助数据消息。
  11. 根据权利要求9所述的方法，其特征在于，所述应答消息包括：第二PRS配置信息，和，第一指示信息；
    其中，所述第一指示信息用于指示所述终端使用所述第二PRS配置信 息进行PRS测量，且所述第二PRS配置信息与所述终端请求获取的所述第一PRS配置信息不同。
  12. 根据权利要求11所述的方法，其特征在于，还包括：
    基于所述第一指示信息，使用所述第二PRS配置信息，进行PRS测量。
  13. 根据权利要求9所述的方法，其特征在于，所述应答消息包括：第二指示信息；
    其中，所述第二指示信息用于指示所述终端使用第三PRS配置信息，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
  14. 根据权利要求13所述的方法，其特征在于，还包括：
    基于所述第二指示信息，使用所述第三PRS配置信息，进行PRS测量。
  15. 根据权利要求9-11或13任一项所述的方法，其特征在于，所述应答消息包括以下至少一项：第三指示信息，和/或，第四指示信息；
    其中，所述第三指示信息用于指示拒绝所述终端发送的按需PRS请求，所述第四指示信息用于指示拒绝所述终端发送的按需PRS请求的原因。
  16. 根据权利要求15所述的方法，其特征在于，在所述应答消息中只包括所述第三指示信息和/或所述第四指示信息的情况下，所述第三指示信息和/或所述第四指示信息还用于指示所述终端使用第三PRS配置信息进行PRS测量，所述第三PRS配置信息是所述终端发送所述按需PRS请求消息之前已获取的PRS配置信息。
  17. 根据权利要求16所述的方法，其特征在于，还包括：
    基于所述第三指示信息和所述第四指示消息中的至少一项，使用所述第三PRS配置信息，进行PRS测量。
  18. 根据权利要求15所述的方法，其特征在于，所述应答消息还包括以下至少一项：目标时长，和/或，目标小区标识；
    其中，所述目标时长用于指示所述终端再次发送所述按需PRS请求的最短间隔时长，所述目标小区标识是始终拒绝所述终端发送的所述按需PRS请求的目标小区的标识。
  19. 根据权利要求18所述的方法，其特征在于，还包括以下至少一项：
    在接收到所述应答消息后至少间隔所述目标时长时，再次向所述LMF设备发送按需PRS请求消息；和/或，
    响应于确定位于所述目标小区内，不再发送按需PRS请求消息。
  20. 一种按需定位参考信号请求装置，其特征在于，所述装置用于定位管理功能LMF设备，包括：
    接收模块，被配置为接收由终端发送的按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
    第一发送模块，被配置为响应于确定无法为所述终端提供所述第一PRS配置信息，向所述终端发送应答消息。
  21. 一种按需定位参考信号请求装置，其特征在于，所述装置用于终端，包括：
    第二发送模块，被配置为向定位管理功能LMF设备发送按需定位参考信号PRS请求消息，所述按需PRS请求消息用于请求获取第一PRS配置信息；
    确定模块，被配置为响应于接收到所述LMF设备发送的应答消息，基于所述应答消息，确定所述LMF设备无法为所述终端提供所述第一PRS配置信息。
  22. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序用于执行上述权利要求1-8任一项所述的按需定位参考信号请求方法。
  23. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序用于执行上述权利要求9-19任一项所述的按需定位参考信号请求方法。
  24. 一种按需定位参考信号请求装置，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为用于执行上述权利要求1-8任一项所述的按需定位参考信号请求方法。
  25. 一种按需定位参考信号请求装置，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为用于执行上述权利要求9-19任一项所述的按需定位参考信号请求方法。
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