Terminal positioning method, device and system, communication equipment and readable storage medium

Abstract

The invention relates to a terminal positioning method, device and system, communication equipment and a computer readable storage medium. The method comprises the following steps: acquiring grouping information of a sending and receiving point associated with a base station; grouping the sending and receiving points according to the grouping information to obtain a sending and receiving group corresponding to the base station, and determining a position resolving model of the sending and receiving group; and based on the position calculation model, performing position calculation processing on the sending and receiving points in the sending and receiving group to obtain positioning information of a terminal associated with the base station. By adopting the method, the terminal positioning precision can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a terminal positioning method, apparatus, system, communication equipment and computer-readable storage medium. Background Art

[0002] In the 5G positioning technology standardized by 3GPP, positioning can rely on TRP (Transmission / Reception Point). Before the position is calculated, the LMF (Location Management Function) network element can obtain the location information of all TRPs under the base station, and calculate the terminal position based on the location information of multiple TRPs and the measurement of the terminal reference signal by each TRP (or the terminal's measurement of each TRP reference signal).

[0003] However, 5G positioning scenarios are diverse, and different scenarios may require different position solution methods. For example, linearly distributed TRPs can be used for positioning in tunnels, two-dimensional plane positioning can be used for designated floors of office buildings, and three-dimensional positioning is required in warehouses. In addition, even TRPs under the same base station may belong to different groups, and different position solution methods are used in different groups. For example, different solution methods are used in different directions in tunnels, and different solution methods are used in underground garages and office areas of the same office building. Since the current 5G positioning technology uses the same position solution method for all TRPs under the base station, the terminal positioning accuracy is not high. Summary of the invention

[0004] Based on this, it is necessary to provide a terminal positioning method, device, system, communication equipment, computer-readable storage medium and computer program product that can improve positioning accuracy in response to the above technical problems.

[0005] In a first aspect, the present application provides a terminal positioning method, comprising:

[0006] Obtaining grouping information of a transmitting and receiving point associated with a base station;

[0007] The sending and receiving points are grouped according to the grouping information to obtain a sending and receiving group corresponding to the base station, and a position solution model of the sending and receiving group is determined;

[0008] Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain positioning information of the terminal associated with the base station.

[0009] In one of the embodiments, the grouping information includes a scene identifier and a subgroup identifier;

[0010] The step of grouping the sending and receiving points according to the grouping information to obtain a sending and receiving group corresponding to the base station, and determining a position solution model for the sending and receiving group includes:

[0011] Grouping the sending and receiving points according to the scenario identifier and the subgroup identifier to obtain at least one sending and receiving group corresponding to the base station;

[0012] A position solution model corresponding to each sending / receiving group in the at least one sending / receiving group is determined according to the scene identifier and the subgroup identifier.

[0013] In one of the embodiments, determining the position solution model corresponding to each sending and receiving group in the at least one sending and receiving group according to the scene identifier and the subgroup identifier includes:

[0014] Verifying the sending and receiving group according to the location information of each sending and receiving point in the sending and receiving group;

[0015] When the sending / receiving group passes the verification, the position solution model corresponding to each sending / receiving group in the at least one sending / receiving group is determined according to the scene identifier and the sub-group identifier.

[0016] In one embodiment, the obtaining of grouping information of the sending and receiving points associated with the base station includes:

[0017] Sending an information request for the sending and receiving point to the base station;

[0018] An information response returned by the base station is received; the information response includes the location information and grouping information of the sending and receiving points.

[0019] In one embodiment, the receiving the information response returned by the base station includes:

[0020] In the case where the information request carries a list of transmission and reception points, receiving an information response returned by the base station and including location information and grouping information of each transmission and reception point in the list of transmission and reception points;

[0021] In a case where the information request does not carry a list of transmission and reception points, an information response returned by the base station and containing location information and grouping information of all transmission and reception points associated with the base station is received.

[0022] In one embodiment, performing position calculation processing on the sending and receiving points in the sending and receiving group based on the position calculation model to obtain the positioning information of the terminal associated with the base station includes:

[0023] Determining location information and measurement information of the sending and receiving points in the sending and receiving group;

[0024] The position information and the measurement information are calculated according to the position calculation model to obtain the positioning information of the terminal.

[0025] In a second aspect, the present application also provides a terminal positioning device, including:

[0026] An acquisition module, used to acquire grouping information of a sending and receiving point associated with a base station;

[0027] A determination module, configured to group the sending and receiving points according to the grouping information, obtain a sending and receiving group corresponding to the base station, and determine a position solution model for the sending and receiving group;

[0028] The positioning module is used to perform position calculation processing on the sending and receiving points in the sending and receiving group based on the position calculation model to obtain the positioning information of the terminal associated with the base station.

[0029] In a third aspect, the present application also provides a terminal positioning system, including a wireless network management, a base station and a LMF network element;

[0030] The wireless network management is used to configure grouping information for the sending and receiving points associated with the base station;

[0031] The base station is used to respond to the information request of the LMF network element and send the grouping information of the sending and receiving points to the LMF network element;

[0032] The LMF network element is used to group the sending and receiving points according to the grouping information, obtain the sending and receiving group corresponding to the base station, determine the position solution model of the sending and receiving group, and perform position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station.

[0033] In a fourth aspect, the present application further provides a communication device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0034] Obtaining grouping information of a transmitting and receiving point associated with a base station;

[0035] The sending and receiving points are grouped according to the grouping information to obtain a sending and receiving group corresponding to the base station, and a position solution model of the sending and receiving group is determined;

[0036] Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain positioning information of the terminal associated with the base station.

[0037] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0038] Obtaining grouping information of a transmitting and receiving point associated with a base station;

[0039] The sending and receiving points are grouped according to the grouping information to obtain a sending and receiving group corresponding to the base station, and a position solution model of the sending and receiving group is determined;

[0040] Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain positioning information of the terminal associated with the base station.

[0041] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0042] Obtaining grouping information of a transmitting and receiving point associated with a base station;

[0043] The sending and receiving points are grouped according to the grouping information to obtain a sending and receiving group corresponding to the base station, and a position solution model of the sending and receiving group is determined;

[0044] Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain positioning information of the terminal associated with the base station.

[0045] The above-mentioned terminal positioning method, apparatus, system, communication equipment, computer-readable storage medium and computer program product obtain the grouping information of the sending and receiving points associated with the base station, group the sending and receiving points according to the grouping information, obtain the sending and receiving group corresponding to the base station, determine the position solution model of the sending and receiving group, and perform position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station; the sending and receiving points under the base station can be grouped to obtain several sending and receiving groups, and different position solution models can be set for different sending and receiving groups, so that the sending and receiving points belonging to different groups can match a more accurate position solution method, thereby improving the accuracy of terminal positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 A schematic diagram of terminal positioning in a UTDOA scenario;

[0048] Figure 2 is a schematic diagram of a flow chart of a terminal positioning method in an embodiment;

[0049] Figure 3 A schematic diagram of a network architecture for terminal positioning in an embodiment;

[0050] Figure 4 An interactive diagram of TRP information for terminal positioning in one embodiment;

[0051] Figure 5 A schematic diagram of a flow chart of position calculation processing performed by LMF in one embodiment;

[0052] Figure 6 is a schematic diagram of positioning in a tunnel scenario in one embodiment;

[0053] Figure 7 is a schematic diagram of a flow chart of a terminal positioning method in an embodiment;

[0054] Figure 8 is a structural block diagram of a terminal positioning device in an embodiment;

[0055] Fig. 9 FIG. 4 is a diagram showing the internal structure of a communication device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] In 5G positioning, the time, time difference or angle information from the terminal to multiple known TRPs can be measured, and the terminal position can be solved based on the measured information and the TRP position. Among them, TRP can be the AAU (Active Antenna Unit) of the outdoor macro station or the pRRU (Pico Remote Radio Unit) of the indoor distribution system. The location information of TRP can be pre-configured to the base station through the wireless network management, and the location information of all TRPs under the station can be transmitted to LMF by the base station through NRPPa (NR Positioning Protocol A) before the position is solved.

[0058] Figure 1Provides a schematic diagram of terminal positioning in the UTDOA (UL-Observed Time Difference of Arrival) scenario. Figure 1 , gNB (gNodeB, next generation base station) can pass the PCI (Physical Cell Identifier) ​​and location information of all TRPs under its management to LMF. LMF calculates the terminal location based on the location information of each TRP and the measurement of each TRP on the uplink SRS (Sounding Reference Signal). tRP-ID represents the TRP identifier, pCI-NR represents the physical cell identifier, and geographicalCoordinates represents the location coordinates of the TRP. The TRP information example passed by gNB to LMF is as follows:

[0059] tRP-ID = 1,

[0060] pCI-NR:595,

[0061] geographicalCoordinates:

[0062] latitude = 551676094,

[0063] longitude = 1352264428,

[0064] altitude = -10}

[0065] tRP-ID = 2,

[0066] pCI-NR:595,

[0067] geographicalCoordinates:

[0068] }

[0069] tRP-ID = 3...

[0070] Since the base station transmits all subordinate TRP information to the LMF, and does not distinguish the scene where the base station / TRP is located, the same position solution method is used for all TRP information. The position solution method may not be compatible with the scene, resulting in low terminal positioning accuracy. In this regard, the present application proposes a terminal positioning method, which extends the TRP information field and transmits the grouping information determined by the TRP based on the scene to the LMF. All TRPs under the management of the base station can be grouped based on the scene to obtain several sending and receiving groups. Different position solution methods are adopted for TRPs belonging to different sending and receiving groups, so that each TRP can be matched to a more accurate position solution method, thereby improving the accuracy of terminal positioning.

[0071] In an exemplary embodiment, Figure 2 As shown, a terminal positioning method is provided. This embodiment takes the method applied to the LMF network element of the core network as an example. It can be understood that the method can also be applied to other network elements or devices as long as the terminal positioning function can be realized. The terminal positioning method may include the following steps:

[0072] Step S102: Acquire grouping information of the sending and receiving points associated with the base station.

[0073] Among them, the group information can be information that represents the group to which the TRP belongs.

[0074] In the specific implementation, LMF can send a TRP information request to the base station. The base station returns a TRP information response to LMF based on the received TRP information request. The TRP information response can carry the grouping information of the TRP under the management of the base station, so that LMF can obtain the grouping information of the TRP under the management of the base station.

[0075] In actual applications, the wireless network management can configure grouping information for each TRP during information configuration. During the interaction between the base station and LMF based on the NRPPa protocol, the LMF sends a TRP information request to the base station. The base station returns a TRP information response to the LMF based on the received TRP information request. The field of the TRP information in the TRP information response can be extended to carry the location information and grouping information of the TRP in the TRP information, so that the LMF can obtain the location information and grouping information of all TRPs under the management of the base station.

[0076] Step S104, grouping the sending and receiving points according to the grouping information, obtaining the sending and receiving groups corresponding to the base stations, and determining the position solution model of the sending and receiving groups.

[0077] The sending and receiving group may be a set of sending and receiving points. The position calculation model may be a model corresponding to the position calculation method.

[0078] In the specific implementation, LMF can group the TRPs under the management of the base station according to the grouping information to obtain one or more transmitting and receiving groups, each of which contains one or more TRPs. LMF can also set a position solution model for each transmitting and receiving group that is compatible with the grouping information.

[0079] In actual applications, the grouping information may include the positioning scenario and the subgroup identifier under the positioning scenario. LMF can divide all TRPs under the management of the base station into one or more groups according to the positioning scenario and the subgroup identifier, and set a corresponding position solution method for each group according to the positioning scenario and the subgroup identifier.

[0080] Step S106: Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain the positioning information of the terminal associated with the base station.

[0081] The terminal may be a terminal corresponding to the transmitting and receiving group. The positioning information may be the position coordinates of the terminal.

[0082] In the specific implementation, for each sending and receiving group, LMF can perform position calculation on each TRP in the sending and receiving group based on the corresponding position calculation model to obtain the positioning information of the terminal under the management of the base station.

[0083] In actual applications, for a specified sending and receiving group, LMF can also obtain the measurement information of each TRP in the sending and receiving group, and based on the position solution method of the sending and receiving group, solve the position information and measurement information of each TRP in the sending and receiving group to obtain the position coordinates of the terminal corresponding to the sending and receiving group.

[0084] The measurement information may include the time, time difference, angle and other information obtained by TRP measuring the uplink SRS of the terminal, or the time, time difference, angle and other information obtained by the terminal measuring the downlink SRS of TRP.

[0085] The above-mentioned terminal positioning method obtains the grouping information of the sending and receiving points associated with the base station, groups the sending and receiving points according to the grouping information, obtains the sending and receiving group corresponding to the base station, determines the position solution model of the sending and receiving group, and performs position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station; the sending and receiving points under the base station can be grouped to obtain several sending and receiving groups, and different position solution models can be set for different sending and receiving groups, so that the sending and receiving points belonging to different groups can match a more accurate position solution method, thereby improving the accuracy of terminal positioning.

[0086] In an exemplary embodiment, the grouping information includes a scene identifier and a subgroup identifier; the above step S104 may specifically include: grouping the sending and receiving points according to the scene identifier and the subgroup identifier to obtain at least one sending and receiving group corresponding to the base station; and determining the position solution model corresponding to each sending and receiving group in at least one sending and receiving group according to the scene identifier and the subgroup identifier.

[0087] The scene identifier may be an identifier of a different positioning scene, and the subgroup identifier may be an identifier of a different group in a positioning scene.

[0088] In the specific implementation, LMF can group the TRPs under the management of the base station according to different scene identifiers and different sub-group identifiers under the same scene identifier to obtain one or more sending and receiving groups. LMF can also determine the corresponding position solution model for each sending and receiving group according to the scene identifier and sub-group identifier.

[0089] For example, for the 6 TRPs under the same base station: TRP1~TRP6, the grouping information of TRP1, TRP3, and TRP5 is 0301, and the grouping information of TRP2, TRP4, and TRP6 is 0302. Among them, 03 is the scene identifier, indicating that it is in a tunnel scene, 01 and 02 are subgroup identifiers, 01 means that the directions of the three TRPs are the same, and they are all direct-view signals, and 02 means that the directions of the three TRPs are different, and there are non-direct-view signals. According to the scene identifier and subgroup identifier, the 6 TRPs are divided into two groups: {TRP1, TRP3, TRP5} and {TRP2, TRP4, TRP6}. For {TRP1, TRP3, TRP5}, since they are TRPs with the same direction in the tunnel scenario, three TRPs can be used for linear positioning, and a position solution model based on the three TRPs is set, for example, a position solution model based on the trilateral positioning method is set; for {TRP2, TRP4, TRP6}, since they are TRPs with different directions in the tunnel scenario, TRP2 and TRP4 with the same direction can be selected, and TRP6 with a different direction can be discarded, and linear positioning can be performed based on TRP2 and TRP4, and a position solution model based on two TRPs is set, for example, the midpoint of TRP2 and TRP4 is determined as the terminal position.

[0090] In this embodiment, by grouping the sending and receiving points according to the scene identifier and the subgroup identifier, at least one sending and receiving group corresponding to the base station is obtained, and the position solution model corresponding to each sending and receiving group in the at least one sending and receiving group is determined according to the scene identifier and the subgroup identifier. The position solution model can be set for different positioning scenarios and different situations under the same positioning scenario, thereby increasing the flexibility of terminal positioning.

[0091] In an exemplary embodiment, the above-mentioned step of determining the position solution model corresponding to each sending and receiving group in at least one sending and receiving group based on the scene identifier and the sub-group identifier may specifically include: verifying the sending and receiving group based on the position information of each sending and receiving point in the sending and receiving group; when the sending and receiving group verification passes, determining the position solution model corresponding to each sending and receiving group in at least one sending and receiving group based on the scene identifier and the sub-group identifier.

[0092] In the specific implementation, after the TRP is divided into one or more sending and receiving groups, LMF can verify whether the division of the sending and receiving group is accurate for each sending and receiving group based on the position information of each TRP in the sending and receiving group. If the division is accurate, the sending and receiving group is determined to have passed the verification, and is allowed to continue to determine the position solution model of the sending and receiving group based on the scene identifier and sub-group identifier. Otherwise, if the division is inaccurate, the sending and receiving group is determined to have failed the verification, and is not allowed to continue to execute subsequent steps.

[0093] For example, after dividing the sending and receiving groups {TRP1, TRP3, TRP5}, LMF can obtain the location information reported by TRP1, TRP3, TRP5, and determine whether TRP1, TRP3, TRP5 are distributed linearly based on the location information. If they are distributed linearly, it is determined that {TRP1, TRP3, TRP5} has passed the verification, and the subsequent steps of determining the position solution model can continue. Otherwise, if TRP1, TRP3, TRP5 are not distributed linearly, it is determined that {TRP1, TRP3, TRP5} has failed the verification, and the position solution model cannot be determined.

[0094] In this embodiment, the sending and receiving group is verified based on the position information of each sending and receiving point in the sending and receiving group. When the sending and receiving group passes the verification, the position solution model corresponding to each sending and receiving group in at least one sending and receiving group is determined based on the scene identifier and the sub-group identifier. This can ensure the reliable division of the sending and receiving groups, improve the accuracy of the sending and receiving groups, and thereby increase the accuracy of the position solution model.

[0095] In an exemplary embodiment, the above step S102 may specifically include: sending an information request for the sending and receiving points to a base station; receiving an information response returned by the base station; the information response includes location information and grouping information of the sending and receiving points.

[0096] The information request may be a message for requesting to obtain TRP information, and the information response may be a response message carrying TRP information.

[0097] In the specific implementation, the LMF can send a TRP information request to the base station. The base station returns a TRP information response to the LMF based on the received TRP information request, and the TRP information response carries the location information and grouping information of the TRP under the management of the base station.

[0098] For example, LMF can request the information of all TRPs under the base station. The base station carries the location information and group information of all its subordinate TRPs in the TRP information response and sends it to LMF. The group information (group identifier) ​​of TRP is represented by Group-ID. At this time, the TRP information response example transmitted by the base station to LMF is as follows:

[0099] tRP-ID = 1,

[0100] pCI-NR:595,

[0101] geographicalCoordinates:

[0102] latitude = 551676094,

[0103] longitude = 1352264428,

[0104] altitude = -10}

[0105] Group-ID:0301

[0106] tRP-ID = 2,

[0107] pCI-NR:595,

[0108] geographicalCoordinates:

[0109] ...}

[0110] Group-ID:0302

[0111] tRP-ID = 3, ...

[0112] Group-ID:0301

[0113] tRP-ID = 4, ...

[0114] Group-ID:0302

[0115] tRP-ID = 5, ...

[0116] Group-ID:0301

[0117] tRP-ID = 6, ...

[0118] Group-ID:0302

[0119] In this embodiment, by sending an information request for the sending and receiving point to the base station and receiving the information response returned by the base station, the LMF can obtain the location information and grouping information of all TRPs under the base station, locate the terminal according to the location information and grouping information, and improve the accuracy of terminal positioning.

[0120] In an exemplary embodiment, the step of receiving the information response returned by the base station may specifically include: when the information request carries a list of sending and receiving points, receiving the information response returned by the base station containing the location information and grouping information of each sending and receiving point in the list of sending and receiving points; when the information request does not carry a list of sending and receiving points, receiving the information response returned by the base station containing the location information and grouping information of all sending and receiving points associated with the base station.

[0121] The sending and receiving point list may be a list composed of specified sending and receiving points.

[0122] In the specific implementation, LMF can carry the sending and receiving point list field in the TRP information request sent to the base station. The base station reads the sending and receiving point list field from the TRP information request, carries the location information and grouping information of each TRP in the sending and receiving point list field in the TRP information response, and returns it to LMF. If the TRP information request sent by LMF to the base station does not carry the sending and receiving point list field, and the base station does not read the sending and receiving point list field from the TRP information request, the location information and grouping information of all TRPs under the management of the base station can be carried in the TRP information response and returned to LMF.

[0123] In this embodiment, by receiving an information response containing the location information and grouping information of each sending and receiving point in the sending and receiving point list returned by the receiving base station when the information request carries the sending and receiving point list, and by receiving an information response containing the location information and grouping information of all sending and receiving points associated with the base station when the information request does not carry the sending and receiving point list, the TRP location information and grouping information can be selectively returned, thereby reducing the amount of data exchanged between the LMF and the base station and improving the terminal positioning efficiency.

[0124] In an exemplary embodiment, the above step S106 may specifically include: determining the position information and measurement information of the sending and receiving points in the sending and receiving group; and solving the position information and measurement information according to the position solution model to obtain the positioning information of the terminal.

[0125] The measurement information may be the time, time difference, angle, etc. obtained by measuring the TRP on the terminal reference signal or the terminal on the TRP reference signal. The positioning information may be the position coordinates.

[0126] In the specific implementation, after LMF obtains the location information and grouping information of TRP and determines the position solution model, when positioning is needed, the measurement information of each TRP in the sending and receiving group can be reported to LMF through the base station. Based on the position solution model, LMF performs position solution according to the location information and measurement information of each TRP to obtain the location coordinates of the terminal corresponding to the sending and receiving group.

[0127] For example, for the sending and receiving group {TRP1, TRP3, TRP5}, when positioning is required, the terminal or TRP1, TRP3, TRP5 can report the measurement information to the LMF through the base station. The LMF calculates the collected position coordinates and measurement information of each TRP in the group according to the position solution model of the sending and receiving group {TRP1, TRP3, TRP5} to obtain the position coordinates of the terminal.

[0128] In this embodiment, by determining the position information and measurement information of the sending and receiving points in the sending and receiving group, the position information and measurement information are solved and processed according to the position solution model to obtain the positioning information of the terminal. The position information and measurement information of the corresponding sending and receiving group can be calculated based on different position solution models to improve the flexibility of terminal positioning.

[0129] In order to facilitate those skilled in the art to have a deeper understanding of the embodiments of the present application, a specific example will be described below.

[0130] In response to the problem of low 5G positioning accuracy, this application proposes a group-based 5G positioning optimization method. By extending the TRP information interaction message field of NRPPa, in the process of TRP-related information required for normal business interaction positioning, the wireless side increases the grouping definition and reporting of the scenarios and subgroups to which the TRP belongs, so that when LMF performs positioning solution, it can select a suitable positioning algorithm for solution based on the division of scenarios and subgroups, thereby improving positioning accuracy and stability. It is especially suitable for solving positioning problems in some special combination scenarios.

[0131] Figure 3 A schematic diagram of the network architecture for terminal positioning is provided. Figure 3 , the wireless network management can expand the TRP group definition when configuring TRP information. After the gNB obtains the group definition, it can pass the newly added TRP group information to the LMF according to the NRPPa protocol. The LMF finally performs positioning and solution based on the TRP location information and group information.

[0132] The above group-based 5G positioning optimization method may specifically include the following steps:

[0133] Step S1, the wireless network management configures TRP information and expands TRP group definition;

[0134] Step S2: During the positioning process, TRP information is exchanged between gNB and LMF through the NRPPa protocol. Figure 4 Provides an interactive diagram of the TRP information of the terminal location, according to Figure 4 , LMF sends a TRP information request to gNB, gNB returns a TRP information response to LMF, and extends the NRPPa message field to add a group identifier Group-ID. In the TRP information response, each TRP reports its Group-ID, indicating the positioning scenario and subgroup to which it belongs to the solution unit LMF. The Group-ID can be:

[0135] Group-ID:

[0136] Scene-ID,

[0137] Subgroup-ID

[0138] }

[0139] Among them, Scene-ID is the scene identifier, such as 3D positioning scene, tunnel scene, etc.; Subgroup-ID is the subgroup identifier, which indicates different subgroups in the same scene, such as different floors of an office building, different directions of the same tunnel, etc. In the same scene during a positioning interaction process, the Subgroup-ID is unique.

[0140] In step S3, LMF determines which gNBs / TRPs belong to the same subgroup based on Group-ID, and verifies whether the scenario and grouping are accurate (such as whether the TRP in the tunnel scenario is linear) based on the reported TRP location information, and uses a matching positioning solution algorithm for the TRP of the same subgroup. The specific processing process is as follows: Figure 5 shown.

[0141] Figure 6 A schematic diagram of positioning in a tunnel scenario is provided. Figure 6 Since the TRPs in the same direction are all direct-line signals, linear positioning can be used. The TRPs in the other direction are mostly non-direct-line signals. Introducing the TRPs in the other direction will produce a large error. Therefore, the TRPs in the same direction of the tunnel are divided into subgroups for linear positioning. Scene-ID=03 identifies the tunnel scene, and Subgroup-ID=01 and 02 identify the two directions of the tunnel.

[0142] During positioning, LMF requests all TRP information under the main service cell in the tunnel. The gNB sends the location information of all subordinate TRPs to LMF through the NRPPa protocol, including the Group-ID information corresponding to each TRP. The specific interaction content is as follows:

[0143] tRP-ID = 1,

[0144] pCI-NR:595,

[0145] geographicalCoordinates:

[0146] latitude = 551676094,

[0147] longitude = 1352264428,

[0148] altitude = -10}

[0149] Group-ID: 0301

[0150] tRP-ID = 2,

[0151] pCI-NR:595,

[0152] geographicalCoordinates:

[0153] ...}

[0154] Group-ID:0302

[0155] tRP-ID = 3, ...

[0156] Group-ID:0301

[0157] tRP-ID = 4, ...

[0158] Group-ID:0302

[0159] tRP-ID = 5, ...

[0160] Group-ID:0301

[0161] tRP-ID = 6, ...

[0162] Group-ID:0302

[0163] LMF performs positioning resource configuration and reference information triggering, and then obtains the measurement results of each TRP or the terminal's measurement results of each TRP.

[0164] Based on the scenario and grouping results, combined with the TRP location information already obtained by LMF, LMF separately solves the measurement results of the TRP groups in the same direction in the tunnel, such as Group-ID=0302 or Group-ID=0301, to obtain the terminal location.

[0165] The above-mentioned group-based 5G positioning optimization method, by extending the NRPPa protocol field and transmitting the grouping information of TRP to LMF, can match a more accurate positioning algorithm and improve positioning accuracy and stability.

[0166] In one embodiment, Figure 7 As shown, a terminal positioning method is provided, which is described by taking LMF as an example, and includes the following steps:

[0167] Step 701, sending an information request for a sending and receiving point to a base station;

[0168] Step 702, receiving an information response returned by the base station; the information response includes location information and grouping information of the sending and receiving points, and the grouping information includes a scene identifier and a subgroup identifier;

[0169] Step 703, grouping the sending and receiving points according to the scene identifier and the subgroup identifier to obtain at least one sending and receiving group corresponding to the base station;

[0170] Step 704, determining a position solution model corresponding to each sending and receiving group in at least one sending and receiving group according to the scene identifier and the subgroup identifier;

[0171] Step 705, determining measurement information of the sending and receiving points in the sending and receiving group;

[0172] Step 706: Calculate the position information and measurement information according to the position calculation model to obtain the terminal's positioning information.

[0173] In the specific implementation, LMF can send a TRP information request to the base station. The base station returns a TRP information response to LMF based on the received TRP information request, and carries the location information and grouping information of the TRP in the TRP information response. The grouping information may include a scene identifier and a subgroup identifier. LMF groups the TRP according to the received scene identifier and subgroup identifier to obtain one or more sending and receiving groups. Each sending and receiving group contains one or more TRPs. LMF can also determine the position solution model corresponding to each sending and receiving group based on the scene identifier and the subgroup identifier. During positioning, LMF can receive the measurement information reported by the TRP through the base station, and based on the position solution model, calculate the location information and measurement information of each TRP in the sending and receiving group to obtain the location coordinates of the terminal.

[0174] The above-mentioned terminal positioning method sends an information request for the sending and receiving points to the base station, receives the information response returned by the base station, groups the sending and receiving points according to the scene identifier and the subgroup identifier, and obtains at least one sending and receiving group corresponding to the base station, determines the position solution model corresponding to each sending and receiving group in at least one sending and receiving group according to the scene identifier and the subgroup identifier, determines the measurement information of the sending and receiving points in the sending and receiving group, and solves the position information and the measurement information according to the position solution model to obtain the positioning information of the terminal; the sending and receiving points under the base station can be grouped to obtain several sending and receiving groups, and different position solution models are set for different sending and receiving groups, so that the sending and receiving points belonging to different groups can match a more accurate position solution method, thereby improving the accuracy of terminal positioning.

[0175] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0176] Based on the same inventive concept, the embodiment of the present application also provides a terminal positioning device for implementing the terminal positioning method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more terminal positioning device embodiments provided below can refer to the limitations of the terminal positioning method above, and will not be repeated here.

[0177] In an exemplary embodiment, Figure 8 As shown, a terminal positioning device is provided, including: an acquisition module 802, a determination module 804 and a positioning module 806, wherein:

[0178] An acquisition module 802 is used to acquire grouping information of a sending and receiving point associated with a base station;

[0179] A determination module 804 is used to group the sending and receiving points according to the grouping information, obtain a sending and receiving group corresponding to the base station, and determine a position solution model for the sending and receiving group;

[0180] The positioning module 806 is used to perform position calculation processing on the sending and receiving points in the sending and receiving group based on the position calculation model to obtain the positioning information of the terminal associated with the base station.

[0181] In an exemplary embodiment, the above-mentioned determination module 804 is also used to group the sending and receiving points according to the scene identifier and the subgroup identifier to obtain at least one sending and receiving group corresponding to the base station; and determine the position solution model corresponding to each sending and receiving group in the at least one sending and receiving group according to the scene identifier and the subgroup identifier.

[0182] In an exemplary embodiment, the above-mentioned determination module 804 is also used to verify the sending and receiving group based on the position information of each sending and receiving point in the sending and receiving group; when the sending and receiving group is verified, the position solution model corresponding to each sending and receiving group in the at least one sending and receiving group is determined according to the scene identifier and the sub-group identifier.

[0183] In an exemplary embodiment, the acquisition module 802 is further used to send an information request for the sending and receiving point to the base station; receive an information response returned by the base station; and the information response includes the location information and grouping information of the sending and receiving point.

[0184] In an exemplary embodiment, the above-mentioned acquisition module 802 is also used to receive an information response returned by the base station containing the location information and grouping information of each sending and receiving point in the sending and receiving point list when the information request carries the sending and receiving point list; and to receive an information response returned by the base station containing the location information and grouping information of all sending and receiving points associated with the base station when the information request does not carry the sending and receiving point list.

[0185] In an exemplary embodiment, the positioning module 806 is also used to determine the position information and measurement information of the sending and receiving points in the sending and receiving group; according to the position solution model, the position information and the measurement information are solved and processed to obtain the positioning information of the terminal.

[0186] Each module in the above terminal positioning device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of the processor in the communication device in the form of hardware, or can be stored in the memory in the communication device in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0187] In an exemplary embodiment, a terminal positioning system is provided, comprising:

[0188] A wireless network management system, configured to configure grouping information for the sending and receiving points associated with the base station;

[0189] The base station is used to respond to the information request of the LMF network element and send the grouping information of the sending and receiving points to the LMF network element;

[0190] The LMF network element is used to group the sending and receiving points according to the grouping information, obtain the sending and receiving group corresponding to the base station, determine the position solution model of the sending and receiving group, and perform position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station.

[0191] In the specific implementation, the wireless network management can configure grouping information for all TRPs under the base station. The LMF sends a TRP information request to the base station. The base station returns a TRP information response to the LMF based on the received TRP information request, and carries the location information and grouping information of the TRP in the TRP information response. The grouping information may include a scene identifier and a subgroup identifier. The LMF groups the TRP according to the received scene identifier and subgroup identifier to obtain one or more sending and receiving groups. Each sending and receiving group contains one or more TRPs. The LMF can also determine the position solution model corresponding to each sending and receiving group based on the scene identifier and the subgroup identifier. During positioning, the LMF can receive the measurement information reported by the TRP through the base station, and based on the position solution model, calculate the location information and measurement information of each TRP in the sending and receiving group to obtain the location coordinates of the terminal.

[0192] The above-mentioned terminal positioning system obtains the grouping information of the sending and receiving points associated with the base station, groups the sending and receiving points according to the grouping information, obtains the sending and receiving group corresponding to the base station, determines the position solution model of the sending and receiving group, and performs position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station; the sending and receiving points under the base station can be grouped to obtain several sending and receiving groups, and different position solution models can be set for different sending and receiving groups, so that the sending and receiving points belonging to different groups can match a more accurate position solution method, thereby improving the accuracy of terminal positioning.

[0193] In an exemplary embodiment, a communication device is provided. The communication device may be a server, and its internal structure diagram may be as shown in FIG. Fig. 9As shown. The communication device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the communication device is used to store terminal positioning data. The input / output interface of the communication device is used to exchange information between the processor and an external device. The communication interface of the communication device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a terminal positioning method is implemented.

[0194] Those skilled in the art will understand that Fig. 9 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0195] In one embodiment, a communication device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0196] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0197] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0198] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0199] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0200] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0201] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A terminal positioning method, characterized in that: The method comprises: Obtaining grouping information of a transmitting and receiving point associated with a base station; The sending and receiving points are grouped according to the grouping information to obtain a sending and receiving group corresponding to the base station, and a position solution model of the sending and receiving group is determined; Based on the position calculation model, position calculation processing is performed on the sending and receiving points in the sending and receiving group to obtain positioning information of the terminal associated with the base station.

2. The method according to claim 1, characterized in that The grouping information includes a scene identifier and a subgroup identifier; The step of grouping the sending and receiving points according to the grouping information to obtain a sending and receiving group corresponding to the base station, and determining a position solution model for the sending and receiving group includes: Grouping the sending and receiving points according to the scenario identifier and the subgroup identifier to obtain at least one sending and receiving group corresponding to the base station; A position solution model corresponding to each sending / receiving group in the at least one sending / receiving group is determined according to the scene identifier and the subgroup identifier.

3. The method according to claim 2, characterized in that The determining, according to the scene identifier and the subgroup identifier, a position solution model corresponding to each sending / receiving group in the at least one sending / receiving group comprises: Verifying the sending and receiving group according to the location information of each sending and receiving point in the sending and receiving group; When the sending / receiving group passes the verification, the position solution model corresponding to each sending / receiving group in the at least one sending / receiving group is determined according to the scene identifier and the sub-group identifier.

4. The method according to claim 1, characterized in that: The obtaining of grouping information of the sending and receiving points associated with the base station includes: Sending an information request for the sending and receiving point to the base station; An information response returned by the base station is received; the information response includes the location information and grouping information of the sending and receiving points.

5. The method according to claim 4, characterized in that The receiving the information response returned by the base station includes: In the case where the information request carries a list of transmission and reception points, receiving an information response returned by the base station and including location information and grouping information of each transmission and reception point in the list of transmission and reception points; In a case where the information request does not carry a list of transmission and reception points, an information response returned by the base station and containing location information and grouping information of all transmission and reception points associated with the base station is received.

6. The method according to claim 1, characterized in that The performing position calculation processing on the sending and receiving points in the sending and receiving group based on the position calculation model to obtain the positioning information of the terminal associated with the base station includes: Determining location information and measurement information of the sending and receiving points in the sending and receiving group; The position information and the measurement information are calculated according to the position calculation model to obtain the positioning information of the terminal.

7. A terminal positioning device, characterized in that: The device comprises: An acquisition module, used to acquire grouping information of a sending and receiving point associated with a base station; A determination module, configured to group the sending and receiving points according to the grouping information, obtain a sending and receiving group corresponding to the base station, and determine a position solution model for the sending and receiving group; The positioning module is used to perform position calculation processing on the sending and receiving points in the sending and receiving group based on the position calculation model to obtain the positioning information of the terminal associated with the base station.

8. A terminal positioning system, characterized in that: The system includes a wireless network management, a base station and a LMF network element; The wireless network management is used to configure grouping information for the sending and receiving points associated with the base station; The base station is used to respond to the information request of the LMF network element and send the grouping information of the sending and receiving points to the LMF network element; The LMF network element is used to group the sending and receiving points according to the grouping information, obtain the sending and receiving group corresponding to the base station, determine the position solution model of the sending and receiving group, and perform position solution processing on the sending and receiving points in the sending and receiving group based on the position solution model to obtain the positioning information of the terminal associated with the base station.

9. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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