Information transmission method, device, communication equipment and storage medium

Abstract

The disclosed embodiments are related to information transmission methods, apparatuses, communication devices and storage media. A first positioning reference signal (PRS) configuration is determined for sending a first PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by a second base station when sending a second PRS; wherein the interference level between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular to information transmission methods, devices, communication equipment and storage media. Background Art

[0002] The fifth generation (5G, 5 th The R16 version of the 10G Generation cellular mobile communication technology introduced a variety of positioning technologies, which can realize the positioning of user equipment (UE). In some positioning technologies, the positioning reference signal (PRS) is introduced for the positioning of user equipment. When positioning, the base station needs to send PRS, which is received by the user equipment. The user equipment not only needs to receive the PRS of the serving cell, but also needs to receive the PRS of the neighboring cell. The PRS of the serving cell and the PRS of the neighboring cell may interfere with each other. Due to the near-far effect, the neighboring cell PRS signal received by the user equipment may be weak, or even unable to detect the neighboring cell PRS signal. Summary of the invention

[0003] In view of this, embodiments of the present disclosure provide an information transmission method, apparatus, communication device, and storage medium.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an information transmission method, wherein the method is applied to a first base station, and the method includes:

[0005] Determine a first PRS configuration for sending a first PRS, wherein the first PRS configuration is determined based on a second PRS configuration used when the second base station sends a second PRS; wherein a degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition.

[0006] In one embodiment, the method further comprises:

[0007] receiving a third PRS configuration sent by a core network, where the third PRS configuration includes: the first PRS configuration and / or the second PRS configuration;

[0008] The determining a first PRS configuration for sending a first PRS includes:

[0009] Acquire the first PRS configuration generated based on the second PRS configuration and issued by the core network;

[0010] or,

[0011] Determine the first PRS configuration according to the second PRS configuration issued by the core network;

[0012] or,

[0013] Obtain at least one candidate first PRS configuration generated based on the second PRS configuration and the second PRS configuration issued by the core network; determine a first PRS configuration according to the second PRS configuration issued by the core network, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0014] In an embodiment, determining the first PRS configuration according to the second PRS configuration issued by the core network includes:

[0015] Perform PRS interference coordination according to the second PRS configuration to determine the first PRS configuration.

[0016] In one embodiment, the second PRS configuration is determined based on a positioning service requirement of the user equipment.

[0017] In one embodiment, the receiving a third PRS configuration sent by the core network includes:

[0018] A New Radio Positioning Protocol NRPPa message carrying the third PRS configuration is received.

[0019] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0020] A first IE, comprising: the third PRS configuration;

[0021] The second IE includes: indication information for requesting positioning information.

[0022] In one embodiment, the method further comprises one of the following:

[0023] In response to successful reception of the third PRS configuration, sending a successful reception indication;

[0024] In response to a failure to receive the third PRS configuration, sending a reception failure indication;

[0025] In response to the third PRS configuration sent by the core network, sending feedback information, where the feedback information is used to indicate that the first PRS configuration is successfully determined according to the second PRS configuration sent by the core network;

[0026] In response to the third PRS configuration sent by the core network, sending feedback information, where the feedback information is used to indicate that the first PRS configuration cannot be successfully determined according to the second PRS configuration sent by the core network;

[0027] In response to successfully determining the first PRS configuration according to the third PRS configuration sent by the core network, the first PRS configuration is sent.

[0028] In one embodiment, the third PRS configuration includes at least one of the following:

[0029] PRS bandwidth configuration,

[0030] PRS configuration index configuration,

[0031] PRS silent configuration,

[0032] PRS logo configuration,

[0033] PRS sending timing flag configuration.

[0034] According to a second aspect of an embodiment of the present disclosure, there is provided an information transmission method, wherein the method is applied to a core network, and the method includes:

[0035] Sending a third PRS configuration to the first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send the first PRS, and / or a second PRS configuration used when the second base station sends the second PRS, wherein the second PRS configuration is used for the first base station to determine the first PRS configuration;

[0036] The degree of interference between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition.

[0037] In one embodiment, the sending the third PRS configuration to the first base station includes:

[0038] The first PRS configuration is generated according to the second PRS configuration, and the first PRS configuration is sent to the first base station;

[0039] or,

[0040] Sending the second PRS configuration to the first base station, so that the first base station determines the first PRS configuration according to the second PRS configuration;

[0041] or,

[0042] At least one candidate first PRS configuration generated according to the second PRS configuration and the second PRS configuration are sent to the first base station; so that the first base station determines a first PRS configuration according to the second PRS configuration, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0043] In one embodiment, the method further comprises:

[0044] The second PRS configuration is determined based on a positioning service requirement of the user equipment.

[0045] In one embodiment, the method further comprises:

[0046] PRS interference coordination is performed according to the second PRS configuration to determine the first PRS configuration and / or the candidate first PRS configuration.

[0047] In one embodiment, the sending the third PRS configuration to the first base station includes:

[0048] Sending the third PRS configuration to the first base station that meets the interference condition in the radio signal measurement report reported by the user equipment;

[0049] or;

[0050] The third PRS configuration is sent to the first base station within a predetermined distance range of the second base station.

[0051] In one embodiment, the method further comprises:

[0052] Receiving a fourth PRS configuration sent by the second base station, wherein the fourth PRS configuration is determined based on a positioning service requirement of the user equipment;

[0053] The second PRS configuration is determined according to the fourth PRS configuration.

[0054] In one embodiment, the sending the third PRS configuration to the first base station includes:

[0055] Send a New Radio Positioning Protocol NRPPa message carrying the third PRS configuration to the first base station.

[0056] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0057] A first IE, comprising: the third PRS configuration;

[0058] The second IE includes: indication information for requesting positioning information.

[0059] In one embodiment, the method further comprises one of the following:

[0060] Determining, according to the received successful reception indication, that the third PRS configuration is received successfully;

[0061] Determining, according to the received reception failure indication, that reception of the third PRS configuration fails;

[0062] Determine, according to the received feedback information, that the first base station successfully determines the first PRS configuration according to the third PRS configuration;

[0063] Determine, according to the received feedback information, that the first base station fails to successfully determine the first PRS configuration according to the third PRS configuration;

[0064] Receive the first PRS configuration returned by the first base station.

[0065] In one embodiment, the third PRS configuration includes at least one of the following parameters:

[0066] PRS bandwidth configuration,

[0067] PRS configuration index configuration,

[0068] PRS silent configuration,

[0069] PRS logo configuration,

[0070] PRS sending timing flag configuration.

[0071] According to a third aspect of an embodiment of the present disclosure, there is provided an information transmission device, which is applied to a first base station, and the device includes: a first determination module, wherein:

[0072] The first determination module is configured to determine a first PRS configuration for sending a first PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by the second base station to send a second PRS; wherein the degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition.

[0073] According to a fourth aspect of an embodiment of the present disclosure, there is provided an information transmission device, which is applied to a core network, and the device includes: a fifth sending module, wherein:

[0074] The fifth sending module is configured to send a third PRS configuration to the first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send the first PRS or a second PRS configuration used when the second base station sends the second PRS, wherein the second PRS configuration is used for the first base station to determine the first PRS configuration;

[0075] The degree of interference between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition.

[0076] According to a fifth aspect of an embodiment of the present disclosure, there is provided a communication device, comprising a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein the processor executes the steps of the information transmission method as described in any one of claims 1 to 8 or 9 to 18 when running the executable program.

[0077] According to a sixth aspect of an embodiment of the present disclosure, there is provided a storage medium on which an executable program is stored, and when the executable program is executed by a processor, the steps of the information transmission method as described in any one of claims 1 to 8 or 9 to 18 are implemented.

[0078] The information transmission method, device and storage medium provided by the embodiments of the present disclosure determine a first PRS configuration for sending a first PRS, wherein the first PRS configuration is determined based on the second PRS configuration used by the second base station when sending the second PRS; wherein the interference degree between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies the low interference condition. In this way, the first PRS configuration can be set based on the second PRS configuration to meet the scenario where the second PRS configuration changes, and the interference degree between the PRS sent by the first base station and the PRS sent by the second base station can still meet the low interference condition, thereby improving the flexibility of the first PRS configuration and its adaptability to different scenarios, reducing interference between PRSs, and thereby improving the success rate and positioning accuracy of PRS positioning of user equipment.

[0079] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0081] Figure 1is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0082] Figure 2 is a flowchart of an information transmission method according to an exemplary embodiment;

[0083] Figure 3 is a flowchart of another information transmission method according to an exemplary embodiment;

[0084] Figure 4 is a flowchart of another information transmission method according to an exemplary embodiment;

[0085] Figure 5 is a flowchart of another information transmission method according to an exemplary embodiment;

[0086] Figure 6 is a block diagram of an information transmission device according to an exemplary embodiment;

[0087] Figure 7 is a block diagram of another information transmission device according to an exemplary embodiment;

[0088] Figure 8 It is a block diagram of a device for information transmission according to an exemplary embodiment. DETAILED DESCRIPTION

[0089] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present invention as detailed in the appended claims.

[0090] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "said" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0091] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0092] Please refer to Figure 1 , which shows a schematic diagram of the structure of a wireless communication system provided by an embodiment of the present disclosure. Figure 1 As shown, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: a plurality of terminals 11 and a plurality of base stations 12 .

[0093] Among them, the terminal 11 can be a device that provides voice and / or data connectivity to the user. The terminal 11 can communicate with one or more core networks via a radio access network (RAN). The terminal 11 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or a "cellular" phone), and a computer with an Internet of Things terminal. For example, it can be a fixed, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted device. For example, a station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE). Alternatively, the terminal 11 can also be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 can also be a vehicle-mounted device, for example, it can be a driving computer with wireless communication function, or a wireless communication device connected to an external driving computer. Alternatively, the terminal 11 may also be a roadside device, for example, a street lamp, a signal lamp or other roadside device with a wireless communication function.

[0094] The base station 12 may be a network-side device in a wireless communication system. The wireless communication system may be a fourth generation mobile communication technology (4G) system, also known as a long term evolution (LTE) system; or, the wireless communication system may be a 5G system, also known as a new radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be the next generation system of the 5G system. The access network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network). Alternatively, an MTC system.

[0095] Among them, the base station 12 can be an evolved base station (eNB) adopted in the 4G system. Alternatively, the base station 12 can also be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link layer control protocol (RLC) layer, and a media access control (MAC) layer; the distributed unit is provided with a physical (Physical, PHY) layer protocol stack. The specific implementation method of the base station 12 is not limited in the embodiment of the present disclosure.

[0096] A wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on the next generation mobile communication network technology standard of 5G.

[0097] In some embodiments, E2E (End to End) connections may also be established between the terminals 11, such as V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication, and V2P (vehicle to pedestrian) communication in vehicle to everything (V2X) communication.

[0098] In some embodiments, the wireless communication system may further include a network management device 13 .

[0099] Several base stations 12 are respectively connected to a network management device 13. The network management device 13 may be a core network device in a wireless communication system. For example, the network management device 13 may be a mobility management entity (MME) in an evolved packet core (EPC). Alternatively, the network management device may be other core network devices, such as a serving gateway (SGW), a public data network gateway (PGW), a policy and charging rules function (PCRF), or a home subscriber server (HSS). The implementation form of the network management device 13 is not limited in the embodiments of the present disclosure.

[0100] The execution entities involved in the embodiments of the present disclosure include, but are not limited to: user equipment (UE) such as terminals supporting 5G positioning, base stations for 5G cellular mobile communications, and a core network for 5G cellular mobile communications.

[0101] The application scenario of the embodiment of the present disclosure is that, in response to PRS interference, the relevant technology proposes an interference coordination mechanism, namely, PRS muting. Through the PRS muting mechanism, PRS interference can be reduced. At present, the PRS configuration can be considered static, so the PRS interference can be reduced by configuring the PRS of the network through operation, maintenance and management (Operation Administration and Maintenance). For example, using the PRS muting mechanism, the core network can configure the PRS of each cell to be orthogonally sent in the time domain through OAM to completely avoid PRS interference, or the core network can also set the PRS configuration of each cell to be the same through OAM, which can also reduce PRS interference.

[0102] Considering that different UE positioning requirements have different PRS configuration requirements for the network, a dynamic PRS configuration is proposed, that is, the network can dynamically change the PRS configuration according to different positioning requirements. With the dynamic update of PRS configuration, new PRS interference problems are brought about.

[0103] like Figure 2 As shown, this exemplary embodiment provides an information transmission method. In a first base station of a wireless communication system, the information transmission method may include:

[0104] Step 201: Determine a first PRS configuration for sending a first PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by a second base station to send a second PRS; wherein a degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition.

[0105] Here, the wireless communication system may include but is not limited to a 5G cellular mobile communication system. The base station may be a base station in the wireless communication system. The core network may be a core network in the wireless communication system.

[0106] In a wireless communication system, a user equipment can be positioned based on a positioning reference signal (PRS). For example, the user equipment can measure the arrival time (TOA) of the PRS sent by multiple positioning base stations, and use the arrival time difference of multiple PRSs and the arrival direction of each PRS to perform positioning using triangulation positioning or other methods.

[0107] Here, the first base station may be different from the second base station. The second base station may be a base station that sends a PRS for the user equipment to perform positioning measurement. The second base station may be composed of one or more. The first base station may be a base station that generates interference to the PRS sent by the second base station.

[0108] The PRS configuration may include at least one of the following: a time domain resource configuration for a base station to send PRS, a frequency domain resource configuration for a base station to send PRS, a spatial domain resource configuration for a base station to send PRS, a power configuration for a base station to send PRS, etc. Here, the first PRS configuration and / or the second PRS may be all configurations for a base station to send PRS, or may be a partial configuration for a base station to send PRS. For example, the first PRS configuration and / or the second PRS configuration may be a PRS silent configuration, or may be any one of a time domain resource configuration, a frequency domain resource configuration, and a spatial domain resource configuration for PRS. Here, the second PRS configuration may be all or part of a configuration for a second base station to send PRS, for example: the second PRS configuration may be a time domain resource configuration for a second base station to send PRS.

[0109] When the user equipment performs PRS-based positioning, it will receive the PRS of the second base station and / or the PRS of the first base station, and the user equipment only needs to perform positioning measurement on the PRS of the second base station during positioning. Therefore, when the user equipment performs positioning based on the PRS of the second base station, the PRS of the first base station may cause signal interference to the PRS of the second base station, for example, the PRS of the first base station may cause co-frequency interference to the PRS of the second base station, etc.

[0110] Here, the first base station may determine the first PRS configuration based on the second PRS configuration, so that the interference degree between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration satisfies the low interference condition. Here, satisfying the low interference condition includes at least one of the following:

[0111] There is no interference between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration;

[0112] There is no interference degree between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration that is lower than the interference threshold.

[0113] There is no interference between a PRS sent by the first base station using the first PRS configuration and a PRS sent by the second base station using the second PRS configuration, including at least one of the following:

[0114] The PRS sent by the first base station using the first PRS configuration is orthogonal in the time domain to the PRS sent by the second base station using the second PRS configuration;

[0115] The signal coverage area of ​​the PRS sent by the first base station using the first PRS configuration does not overlap with the signal coverage area of ​​the PRS sent by the second base station using the second PRS configuration, etc.

[0116] Exemplarily, the first PRS configuration can be set based on the second PRS configuration by means of PRS interference coordination or the like. For example, the silence configuration in the first PRS configuration can be set based on the second PRS configuration. Here, the silence configuration can be a configuration for maintaining silence, or a configuration in which the first base station does not send PRS. According to the second PRS configuration, the silence configuration in the first PRS configuration is determined, and when the first base station applies the silence configuration, interference with the second base station PRS can be reduced or avoided.

[0117] When the second PRS configuration changes, the first PRS configuration may be re-determined based on the changed second PRS configuration.

[0118] In this way, the first PRS configuration can be set based on the second PRS configuration to meet the scenario where the second PRS configuration changes, the degree of interference between the PRS sent by the first base station and the PRS sent by the second base station can still meet the low interference condition, thereby improving the flexibility of the first PRS configuration and its adaptability to different scenarios, reducing interference between PRSs, and further improving the success rate and positioning accuracy of PRS positioning of user equipment.

[0119] In one embodiment, Figure 3 As shown, the information transmission method may also include:

[0120] Step 202: receiving a third PRS configuration issued by a core network, wherein the third PRS configuration includes: the first PRS configuration and / or the second PRS configuration;

[0121] The determining a first PRS configuration for sending a first PRS includes:

[0122] Acquire the first PRS configuration generated based on the second PRS configuration and issued by the core network;

[0123] or,

[0124] Determine the first PRS configuration according to the second PRS configuration issued by the core network;

[0125] or,

[0126] Obtain at least one candidate first PRS configuration generated based on the second PRS configuration and the second PRS configuration issued by the core network; determine a first PRS configuration according to the second PRS configuration issued by the core network, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0127] That is, the first PRS configuration can be determined by the core network according to the second PRS configuration of the second base station; at this time, the core network sends the determined first PRS configuration to the first base station. It can also be that the core network sends the second PRS configuration of the second base station to the first base station, and it is determined by the first base station; at this time, the core network sends the second PRS configuration used to determine the first PRS configuration to the first base station. It can also be that the core network sends the second PRS configuration of the second base station and at least one candidate first PRS configuration to the first base station, wherein the candidate first PRS configuration is determined by the core network based on the second PRS configuration; in this way, after the first base station receives the second PRS configuration and at least one candidate first PRS configuration, it can select a first PRS configuration from the at least one candidate first PRS configuration for use by the first base station according to the second PRS configuration and its own situation; of course, if at least one candidate first PRS configuration sent by all core networks is not applicable, the first base station can negotiate with the core network, or determine the first PRS configuration it uses by itself.

[0128] In all embodiments of the present disclosure, the first PRS configuration may be: the first base station sends the value of the PRS configuration itself; after the first base station and / or the second base station receives the value of the first PRS configuration itself, they may directly determine the first PRS configuration.

[0129] The first PRS configuration may also be: an identifier for indicating the corresponding first PRS configuration, so that the receiving end determines the first PRS configuration according to the correspondence between the preset identifier and the first PRS configuration. The correspondence between the preset identifier and the first PRS configuration may be determined based on a protocol; or may be sent by the core network to the first base station and / or the second base station.

[0130] The first PRS configuration may also be: used to calculate one or more parameters of the first PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0131] The first PRS configuration may also be: used to calculate one or more parameters of the first PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0132] In all embodiments of the present disclosure, the second PRS configuration may be: the second base station sends the value of the PRS configuration itself; after the first base station and / or the second base station receives the value of the second PRS configuration itself, the second PRS configuration may be directly determined.

[0133] The second PRS configuration may also be: used to indicate a corresponding second PRS configuration identifier, so that the receiving end determines the second PRS configuration according to the correspondence between the preset identifier and the second PRS configuration. The correspondence between the preset identifier and the second PRS configuration may be determined based on a protocol; or may be sent by the core network to the first base station and / or the second base station.

[0134] The second PRS configuration may also be: used to calculate one or more parameters of the second PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0135] The second PRS configuration may also be: used to calculate one or more parameters of the second PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0136] Here, the third PRS configuration received from the core network may be a PRS configuration sent by a location management function (LMF, Location Management Function) in the core network.

[0137] The core network may first determine a first base station that needs to receive the first PRS configuration or the second PRS configuration. The core network may determine a first base station that may interfere with the PRS of the second base station based on the geographical location of the second base station, and send the first PRS configuration or the second PRS configuration to the first base station.

[0138] The first PRS configuration sent by the core network can be a PRS configuration determined by the core network to complete the PRS interference coordination with the second PRS configuration. After receiving the first PRS configuration, the first base station can directly apply it to the transmission of the PRS, that is, send the PRS based on the resources of the first PRS configuration to reduce the interference with the PRS transmitted by the second base station.

[0139] The first PRS configuration is determined by the core network. When there are multiple first base stations, the core network can uniformly allocate the first PRS configuration so that the interference degree between the PRS of each first base station and the PRS of the second base station meets the low interference condition, thereby improving the configuration efficiency and configuration consistency of the first PRS configuration. When there are multiple first base stations, the first PRS configuration of each first base station can be different and can be configured according to the service requirements of the user equipment served by each first base station. The interference degree between the first PRS configuration of each first base station and the PRS of the second base station meets the low interference condition.

[0140] The core network may also send the second PRS configuration to the first base station. After receiving the second PRS configuration, the first base station determines the first PRS configuration and sends the PRS according to the first PRS configuration, thereby reducing interference with the PRS transmitted by the second base station.

[0141] The first PRS configuration is determined by the first base station. The first base station can determine the first PRS configuration that adapts to its own positioning service conditions and satisfies the PRS interference coordination conditions with the second base station based on the positioning requirements of the UE it serves and in combination with the second PRS configuration sent by the core network, thereby making the first PRS configuration more adaptable.

[0142] In an embodiment, determining the first PRS configuration according to the second PRS configuration issued by the core network includes:

[0143] Perform PRS interference coordination according to the second PRS configuration to determine the first PRS configuration.

[0144] The first base station may perform PRS interference coordination on its own PRS configuration with respect to the second PRS configuration to obtain a first PRS configuration, so that interference caused by the first PRS configuration on the second PRS configuration satisfies a low interference condition.

[0145] Exemplarily, the first base station may set a first PRS configuration so that the PRS sent by the first base station using the first PRS configuration is orthogonal to the PRS sent by the second base station using the second PRS configuration in the time domain. In this way, the mutual interference between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration is reduced.

[0146] In one embodiment, the second PRS configuration is determined based on a positioning service requirement of the user equipment.

[0147] The second PRS configuration is a PRS configuration of the second base station and is determined based on a positioning service requirement of a user equipment served by the second base station.

[0148] Different positioning service requirements and user equipment have different requirements for positioning accuracy, for example, the positioning accuracy requirement for walking navigation is higher than that for vehicle navigation. The PRS configurations for different positioning service requirements are different. Therefore, the second base station can send PRS based on the second PRS configuration determined by the positioning service requirements of the user equipment served by the second base station. The core network can also determine the second PRS configuration based on the positioning service requirements of the user equipment served by the second base station. Here, determining the second PRS configuration based on the positioning service requirements can be: determining the second PRS configuration based on the positioning accuracy required by the positioning scenario, and / or based on the positioning overhead that the network or user equipment can bear.

[0149] In this way, the second PRS configuration can meet different positioning service requirements of the user equipment, so that when the user equipment performs positioning based on different positioning service requirements, the interference of the PRS sent by the first base station can meet the low interference condition, thereby improving the positioning accuracy.

[0150] In one embodiment, step 202 may include:

[0151] A New Radio Positioning Protocol NRPPa message carrying the third PRS configuration is received.

[0152] Here, the NRPPa message may be a newly defined NRPPa message, for example, a new NRPPa message named Positioning information update request may be defined to carry the first PRS configuration or the second PRS configuration. The NRPPa message may include only one IE carrying the third PRS configuration.

[0153] The NRPPa message may also be an existing NRPPa message, and may carry the first PRS configuration or the second PRS configuration in a reserved bit position or a newly added bit position in the existing NRPPa message.

[0154] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0155] A first IE, comprising: the third PRS configuration;

[0156] The second IE includes: indication information for requesting positioning information.

[0157] Here, the first IE is different from the second IE. The first IE may be a newly added IE in the existing NRPPa message, using the newly added IE to carry the first PRS configuration or the second PRS configuration; the original IE may still carry the indication information for requesting positioning information. For example, an IE carrying PRS configuration information may be added to an existing positioning information request or an OTDOA information request.

[0158] The third PRS configuration may also be set in the reserved bit of the second IE. In this way, the utilization efficiency of the existing NRPPa messages can be improved, the development difficulty caused by the newly added NRPPa messages can be reduced, and the complexity of information interaction generated by multiple NRPPa messages can be reduced.

[0159] In one embodiment, the method further comprises:

[0160] In response to successful reception of the third PRS configuration, sending a successful reception indication;

[0161] In response to a failure to receive the third PRS configuration, sending a reception failure indication;

[0162] In response to the third PRS configuration sent by the core network, sending feedback information, where the feedback information is used to indicate that the first PRS configuration is successfully determined according to the second PRS configuration sent by the core network;

[0163] In response to the third PRS configuration sent by the core network, sending feedback information, where the feedback information is used to indicate that the first PRS configuration cannot be successfully determined according to the second PRS configuration sent by the core network;

[0164] In response to successfully determining the first PRS configuration according to the third PRS configuration sent by the core network, the first PRS configuration is sent.

[0165] After receiving the third PRS configuration, the first base station may send feedback information to the core network.

[0166] If the third PRS configuration is received successfully, the first base station may send a reception success indication. If the third PRS configuration is received unsuccessfully, the first base station may send a reception failure indication. The core network may determine whether the third PRS configuration is received successfully based on the feedback information. Here, the third PRS configuration may be the first PRS configuration or the second PRS configuration.

[0167] In response to the failure to receive the third PRS configuration, the core network may retransmit the third PRS configuration to the first base station, so that the first base station may receive the third PRS configuration information retransmitted by the core network. Here, the third PRS configuration may be the first PRS configuration or the second PRS configuration.

[0168] In response to the first base station determining the first PRS configuration, the first PRS configuration may be returned to the core network.

[0169] In response to the first base station successfully determining the first PRS configuration according to the second PRS configuration sent by the core network, a first confirmation message can be sent to the core network, indicating that the first base station has determined the first PRS configuration. Or, the first base station sends the determined first PRS configuration to the core network. Or, the first confirmation message and the first PRS configuration are sent to the core network at the same time.

[0170] In response to the first base station successfully determining the first PRS configuration according to the second PRS configuration sent by the core network, second confirmation information may be sent to the core network to indicate that the first base station has not determined the first PRS configuration.

[0171] In response to the first base station failing to successfully determine the first PRS configuration according to the second PRS configuration sent by the core network, the core network may determine the first PRS configuration through PRS interference coordination for the second PRS configuration and send it to the first base station.

[0172] In one embodiment, the third PRS configuration includes at least one of the following:

[0173] PRS bandwidth configuration,

[0174] PRS configuration index configuration,

[0175] PRS silent configuration,

[0176] PRS logo configuration,

[0177] PRS sending timing flag configuration.

[0178] The third PRS configuration may include the configuration of the time domain and the configuration of the frequency domain resources for the base station to send the PRS, etc. The third PRS configuration may be the entire configuration for the base station to send the PRS, or may be a partial configuration for the base station to send the PRS.

[0179] like Figure 4 As shown, this exemplary embodiment provides an information transmission method. In a core network of a wireless communication system, the information transmission method may include:

[0180] Step 401: Send a third PRS configuration to a first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send a first PRS, or a second PRS configuration used when the second base station sends a second PRS; wherein the second PRS configuration is used for the first base station to determine the first PRS configuration;

[0181] The degree of interference between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition.

[0182] Here, the wireless communication system may include but is not limited to a 5G cellular mobile communication system. The base station may be a base station in the wireless communication system. The core network may be a core network in the wireless communication system.

[0183] In a wireless communication system, a user equipment can be positioned based on a positioning reference signal (PRS). For example, the user equipment can measure the arrival time (TOA) of the PRS sent by multiple positioning base stations, and use the arrival time difference of multiple PRSs and the arrival direction of each PRS to perform positioning using triangulation positioning or other methods.

[0184] Here, the first base station may be different from the second base station. The second base station may be a base station that sends a PRS for the user equipment to perform positioning measurement. The second base station may be composed of one or more. The first base station may be a base station that generates PRS interference to the PRS of the second base station received by the user equipment.

[0185] The PRS configuration may include any one or more of the following: a time domain resource configuration for a base station to send a PRS, a frequency domain resource configuration for a base station to send a PRS, a spatial domain resource configuration for a base station to send a PRS, and a power configuration for a base station to send a PRS. Here, the first PRS configuration and / or the second PRS may be all configurations for a base station to send a PRS, or may be a partial configuration for a base station to send a PRS. For example, the first PRS configuration and / or the second PRS configuration may be a PRS silent configuration, or may be any one of a time domain resource configuration, a frequency domain resource configuration, and a spatial domain resource configuration for a PRS. Here, the second PRS configuration may be all or part of a configuration for a second base station to send a PRS, for example: the second PRS configuration may be a time domain resource configuration for a second base station to send a PRS.

[0186] When the user equipment performs PRS-based positioning, it will receive the PRS of the second base station and / or the PRS of the first base station, and the user equipment only needs to perform positioning measurement on the PRS of the second base station during positioning. Therefore, when the user equipment performs positioning based on the PRS of the second base station, the PRS of the first base station may cause signal interference to the PRS of the second base station, for example, the PRS of the first base station may cause co-frequency interference to the PRS of the second base station, etc.

[0187] Here, the first base station may determine the first PRS configuration based on the second PRS configuration, so that the interference degree between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration satisfies the low interference condition. Here, satisfying the low interference condition includes at least one of the following:

[0188] There is no interference between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration;

[0189] There is no interference degree between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration that is lower than the interference threshold.

[0190] There is no interference between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration, including at least one of the following:

[0191] The PRS sent by the first base station using the first PRS configuration is orthogonal in the time domain to the PRS sent by the second base station using the second PRS configuration;

[0192] The signal coverage area of ​​the PRS sent by the first base station using the first PRS configuration does not overlap with the signal coverage area of ​​the PRS sent by the second base station using the second PRS configuration, etc.

[0193] Exemplarily, the first PRS configuration can be set based on the second PRS configuration by means of PRS interference coordination or the like. For example, the silence configuration in the first PRS configuration can be set based on the second PRS configuration. Here, the silence configuration can be a configuration for maintaining silence, or a configuration in which the first base station does not send PRS. According to the second PRS configuration, the silence configuration in the first PRS configuration is determined, and when the first base station applies the silence configuration, interference with the second base station PRS can be reduced or avoided.

[0194] When the second PRS configuration changes, the first PRS configuration may be re-determined based on the changed second PRS configuration.

[0195] In this way, the first PRS configuration can be set based on the second PRS configuration to meet the scenario where the second PRS configuration changes, the degree of interference between the PRS sent by the first base station and the PRS sent by the second base station can still meet the low interference condition, thereby improving the flexibility of the first PRS configuration and its adaptability to different scenarios, reducing interference between PRSs, and further improving the success rate and positioning accuracy of PRS positioning of user equipment.

[0196] Here, the third PRS configuration received from the core network may be a PRS configuration sent by a location management function (LMF, Location Management Function) in the core network.

[0197] The core network may first determine a first base station that needs to receive the first PRS configuration or the second PRS configuration. The core network may determine a first base station that may interfere with the PRS of the second base station based on the geographical location of the second base station; and send the first PRS configuration or the second PRS configuration to the first base station.

[0198] The first PRS configuration sent by the core network may be determined by the core network and is used to complete the PRS configuration for PRS interference coordination with the second PRS configuration. After receiving the first PRS configuration, the first base station may directly apply it to the transmission of the PRS, that is, send the PRS based on the resources of the first PRS configuration to reduce the interference with the PRS transmitted by the second base station.

[0199] The first PRS configuration is determined by the core network. When there are multiple first base stations, the core network can uniformly allocate the first PRS configuration so that the degree of interference between the PRS of each first base station and the PRS of the second base station meets the low interference condition, thereby improving the configuration efficiency and configuration consistency of the first PRS configuration. When there are multiple first base stations, the first PRS configuration of each first base station may be different, and may be configured according to the service requirements of the user equipment served by each first base station. The degree of interference between the first PRS configuration of each first base station and the PRS of the second base station meets the low interference condition. When there are multiple first base stations, the first PRS configuration of each first base station may be the same.

[0200] The core network may also send the second PRS configuration to the first base station. After receiving the second PRS configuration, the first base station determines the first PRS configuration and sends the PRS according to the first PRS configuration, thereby reducing interference with the PRS transmitted by the second base station.

[0201] The first PRS configuration is determined by the first base station. The first base station can determine the first PRS configuration that adapts to its own positioning service conditions and satisfies the PRS interference coordination conditions with the second base station based on the positioning requirements of the UE it serves and in combination with the second PRS configuration sent by the core network, thereby making the first PRS configuration more adaptable.

[0202] In one embodiment, the sending the third PRS configuration to the first base station includes:

[0203] The first PRS configuration is generated according to the second PRS configuration, and the first PRS configuration is sent to the first base station;

[0204] or,

[0205] Sending the second PRS configuration to the first base station, so that the first base station determines the first PRS configuration according to the second PRS configuration;

[0206] or,

[0207] At least one candidate first PRS configuration generated according to the second PRS configuration and the second PRS configuration are sent to the first base station; so that the first base station determines a first PRS configuration according to the second PRS configuration, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0208] That is, the first PRS configuration can be determined by the core network according to the second PRS configuration of the second base station; at this time, the core network sends the determined first PRS configuration to the first base station. It can also be that the core network sends the second PRS configuration of the second base station to the first base station, and it is determined by the first base station; at this time, the core network sends the second PRS configuration used to determine the first PRS configuration to the first base station. It can also be that the core network sends the second PRS configuration of the second base station and at least one candidate first PRS configuration to the first base station, wherein the candidate first PRS configuration is determined by the core network based on the second PRS configuration; in this way, after the first base station receives the second PRS configuration and at least one candidate first PRS configuration, it can select a first PRS configuration from the at least one candidate first PRS configuration for use by the first base station according to the second PRS configuration and its own situation; of course, if at least one candidate first PRS configuration sent by all core networks is not applicable, the first base station can negotiate with the core network, or determine the first PRS configuration it uses by itself.

[0209] In all embodiments of the present disclosure, the first PRS configuration may be: the first base station sends the value of the PRS configuration itself; after the first base station and / or the second base station receives the value of the first PRS configuration itself, they may directly determine the first PRS configuration.

[0210] The first PRS configuration may also be: an identifier for indicating the corresponding first PRS configuration, so that the receiving end determines the first PRS configuration according to the correspondence between the preset identifier and the first PRS configuration. The correspondence between the preset identifier and the first PRS configuration may be determined based on a protocol; or may be sent by the core network to the first base station and / or the second base station.

[0211] The first PRS configuration may also be: used to calculate one or more parameters of the first PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0212] In all embodiments of the present disclosure, the second PRS configuration may be: the second base station sends the value of the PRS configuration itself; after the first base station and / or the second base station receives the value of the second PRS configuration itself, the second PRS configuration may be directly determined.

[0213] The second PRS configuration may also be: used to indicate a corresponding second PRS configuration identifier, so that the receiving end determines the second PRS configuration according to the correspondence between the preset identifier and the second PRS configuration. The correspondence between the preset identifier and the second PRS configuration may be determined based on a protocol; or may be sent by the core network to the first base station and / or the second base station.

[0214] The second PRS configuration may also be: used to calculate one or more parameters of the second PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0215] In one embodiment, Figure 5 As shown, in response to the third PRS configuration being the first PRS configuration, before sending the first PRS configuration to the first base station, the method further includes:

[0216] Step 402: Perform PRS interference coordination according to the second PRS configuration to determine the first PRS configuration and / or the candidate first PRS configuration.

[0217] PRS interference coordination is performed on the second PRS configuration to obtain the first PRS configuration, and / or the candidate first PRS configuration, so that the interference caused by the first base station using the first PRS configuration and / or the candidate first PRS configuration to send the first PRS to the second base station using the second PRS configuration to send the second PRS meets the low interference condition.

[0218] The first base station may perform PRS interference coordination on its own PRS configuration according to the second PRS configuration to obtain the first PRS configuration.

[0219] Exemplarily, the first base station may set a first PRS configuration so that the PRS sent by the first base station using the first PRS configuration is orthogonal to the PRS sent by the second base station using the second PRS configuration in the time domain. In this way, the mutual interference between the PRS sent by the first base station using the first PRS configuration and the PRS sent by the second base station using the second PRS configuration is reduced.

[0220] In one embodiment, the information transmission method may further include:

[0221] The second PRS configuration is determined based on a positioning service requirement of the user equipment.

[0222] The second PRS configuration is a PRS configuration of the second base station and is determined based on a positioning service requirement of a user equipment served by the second base station.

[0223] Different positioning service requirements and user equipment have different requirements for positioning accuracy, for example, the positioning accuracy requirement for walking navigation is higher than that for vehicle navigation. The PRS configurations for different positioning service requirements are different. Therefore, the second base station can send PRS based on the second PRS configuration determined by the positioning service requirements of the user equipment served by the second base station. The core network can also determine the second PRS configuration based on the positioning service requirements of the user equipment served by the second base station. Here, determining the second PRS configuration based on the positioning service requirements can be: determining the second PRS configuration based on the positioning accuracy required by the positioning scenario, and / or based on the positioning overhead that the network or user equipment can bear.

[0224] In this way, the second PRS configuration can meet different positioning service requirements of the user equipment, so that when the user equipment performs positioning based on different positioning service requirements, the interference of the PRS sent by the first base station can meet the low interference condition, thereby improving the positioning accuracy.

[0225] In one embodiment, step 401 may include:

[0226] Sending the third PRS configuration to the first base station that meets the interference condition in the wireless signal measurement report reported by the user equipment;

[0227] or;

[0228] The third PRS configuration is sent to the first base station within a predetermined distance range of the second base station.

[0229] The core network may first determine the first base station.

[0230] The core network may determine the first base station according to the geographic information of the second base station. For example, a base station within a predetermined distance range may interfere with the PRS of the second base station. A base station within a predetermined distance range of the second base station may be determined as the first base station.

[0231] The core network may determine the first base station according to the wireless signal measurement report reported by the user equipment with positioning requirements served by the second base station. Here, the base station meeting the interference condition may be a base station whose signal strength meets the signal strength threshold.

[0232] In one embodiment, the information transmission method may further include:

[0233] Receiving a fourth PRS configuration sent by the second base station, wherein the fourth PRS configuration is determined based on a positioning service requirement of the user equipment;

[0234] The second PRS configuration is determined according to the fourth PRS configuration.

[0235] Here, the fourth PRS configuration may be a complete configuration or a partial configuration for the second base station to send the PRS, and the second base station may send the fourth PRS configuration for the core network or the first base station to determine the first PRS configuration.

[0236] Here, the fourth PRS configuration may be the same as the second PRS configuration. The fourth PRS configuration may also include the second PRS configuration, that is, the second PRS configuration may be a part of the fourth PRS configuration.

[0237] The core network may determine the second PRS configuration from the fourth PRS configuration to perform PRS interference coordination, or send the determined second PRS configuration to the first base station to perform PRS interference coordination.

[0238] Exemplarily, the fourth PRS configuration is one or more of the time domain resources, frequency domain resources, and spatial domain resources for the second base station to send PRS. The second base station sends the fourth PRS configuration to the core network. The core network determines the time domain resource configuration in the fourth PRS configuration as the second PRS configuration. The core network can perform PRS interference coordination based on the time domain resource configuration, or send the determined time domain resource configuration to the first base station for PRS interference coordination.

[0239] In one embodiment, step 401 may include:

[0240] Send a New Radio Positioning Protocol NRPPa message carrying the third PRS configuration to the first base station.

[0241] Here, the NRPPa message may be a newly defined NRPPa message. For example, a new NRPPa message named Positioning information update request may be defined to carry the first PRS configuration or the second PRS configuration.

[0242] The NRPPa message may also be an existing NRPPa message, and may carry the first PRS configuration or the second PRS configuration in a reserved bit position or a newly added bit position in the existing NRPPa message.

[0243] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0244] A first IE, comprising: the third PRS configuration, or a parameter used to determine the third PRS configuration;

[0245] The second IE includes: indication information for requesting positioning information.

[0246] In all embodiments of the present disclosure, the parameter used to determine the third PRS configuration may be: an identifier for indicating the corresponding third PRS configuration, so that the receiving end determines the third PRS configuration according to the correspondence between the preset identifier and the third PRS configuration. The correspondence between the preset identifier and the third PRS configuration may be determined based on a protocol; or may be sent by the core network to the first base station and / or the second base station.

[0247] The parameters for determining the third PRS configuration may also be: used to calculate one or more parameters of the third PRS configuration according to a preset formula; wherein the preset formula may be determined based on a protocol; and may also be sent by the core network to the first base station and / or the second base station.

[0248] Here, the first IE is different from the second IE. The first IE may be a newly added IE in the existing NRPPa message, using the newly added IE to carry the first PRS configuration or the second PRS configuration; the original IE may still carry the indication information for requesting positioning information. For example, an IE carrying PRS configuration information may be added to an existing positioning information request (positioning information request) or an arrival time difference positioning information request (OTDOA information request).

[0249] The third PRS configuration may also be set in the reserved bit of the second IE. In this way, the utilization efficiency of the existing NRPPa messages can be improved, the development difficulty caused by the newly added NRPPa messages can be reduced, and the complexity of information interaction generated by multiple NRPPa messages can be reduced.

[0250] In one embodiment, the information transmission method may further include one of the following:

[0251] Determining, according to the received successful reception indication, that the third PRS configuration is received successfully;

[0252] Determining, according to the received reception failure indication, that reception of the third PRS configuration fails;

[0253] Determine, according to the received feedback information, whether the first base station successfully determines the first PRS configuration according to the third PRS configuration;

[0254] Receive the first PRS configuration returned by the first base station.

[0255] After receiving the third PRS configuration, the first base station may send feedback information to the core network.

[0256] If the third PRS configuration is received successfully, the first base station may send a reception success indication. If the third PRS configuration is received unsuccessfully, the first base station may send a reception failure indication. The core network may determine whether the third PRS configuration is received successfully based on the feedback information. Here, the third PRS configuration may be the first PRS configuration or the second PRS configuration.

[0257] In response to the failure to receive the third PRS configuration, the core network may retransmit the third PRS configuration to the first base station, so that the first base station may receive the third PRS configuration information retransmitted by the core network. Here, the third PRS configuration may be the first PRS configuration or the second PRS configuration.

[0258] In response to the first base station determining the first PRS configuration, the first PRS configuration may be returned to the core network.

[0259] In response to the first base station successfully determining the first PRS configuration according to the second PRS configuration sent by the core network, a first confirmation message can be sent to the core network, indicating that the first base station has determined the first PRS configuration. Or, the first base station sends the determined first PRS configuration to the core network. Or, the first confirmation message and the first PRS configuration are sent to the core network at the same time.

[0260] In response to the first base station failing to successfully determine the first PRS configuration according to the second PRS configuration sent by the core network, second confirmation information may be sent to the core network to indicate that the first base station has not determined the first PRS configuration.

[0261] In response to the first base station failing to successfully determine the first PRS configuration according to the second PRS configuration sent by the core network, the core network may determine the first PRS configuration through PRS interference coordination for the second PRS configuration and send it to the first base station.

[0262] In one embodiment, the third PRS configuration includes at least one of the following:

[0263] PRS bandwidth configuration,

[0264] PRS configuration index configuration,

[0265] PRS silent configuration,

[0266] PRS logo configuration, and

[0267] PRS sending timing flag configuration.

[0268] The third PRS configuration may include the configuration of the time domain and the configuration of the frequency domain resources for the base station to send the PRS, etc. The third PRS configuration may be the entire configuration for the base station to send the PRS, or may be a partial configuration for the base station to send the PRS.

[0269] A specific example is provided below in combination with any of the above embodiments:

[0270] 1. LMF sends a message (e.g., NRPPa message) to the target base station, transmission reception point (TRP) or gNB, where the message includes PRS configuration information, and the PRS configuration information is used for PRS interference coordination by the target base station.

[0271] 2. When LMF sends the message: When one or more base stations change the PRS configuration due to changes in the positioning requirements of the user equipment, LMF sends the message to the target base station. Specifically, LMF may actively update the PRS configuration of one or more base stations according to changes in positioning requirements, or one or more base stations may actively update the PRS configuration and indicate that their PRS configuration has changed, which may include their updated PRS configuration information.

[0272] 3. The method for LMF to determine the target base station is as follows:

[0273] Method a: Determine the target base station according to the geographical information of the base station whose PRS configuration is updated in 2 above, for example, the target base station is a base station that is geographically close to the base station whose PRS configuration is updated;

[0274] Method b: Determine the target base station according to the measurement report result of the UE to be located in 2 above, that is, the UE to be located by changing the PRS configuration, for example, determine the base station that can interfere with it according to the measurement report result of the UE.

[0275] 4. The PRS configuration information described in 1 is as follows:

[0276] A: all or part of the PRS configuration information updated by the base station;

[0277] B: PRS configuration information recommended by LMF for target base station application;

[0278] C: includes both A and B;

[0279] PRS configuration information may include the following:

[0280] PRS bandwidth (prsBandwidth), PRS configuration index (prsConfigIndex), PRS muting configuration (prsmutingconfiguration), PRS identifier (prsid), PRS sending timing (prsOccasionGroup);

[0281] For example, for B, only the PRS muting configuration may be included, and after receiving it, the target base station only needs to apply the new PRS muting configuration to avoid or reduce PRS interference.

[0282] 5. After receiving the PRS configuration information of the application and PRS interference coordination described in 1, the target base station may perform the following steps:

[0283] 5.1. The target base station determines its new PRS configuration information. The target base station coordinates the PRS interference problem and updates its PRS configuration according to the PRS configuration information provided by the LMF.

[0284] 5.2. The target base station applies the PRS configuration provided by LMF. The target base station directly applies the PRS configuration information recommended by LMF;

[0285] 5.3. The target base station can determine its own PRS configuration or use the PRS configuration recommended by the LMF.

[0286] 6. The target base station returns a confirmation message to the LMF. The confirmation message is as follows:

[0287] Newly configured PRS information of the target base station;

[0288] The target base station returns a confirmation that the PRS configuration information recommended by the LMF is used;

[0289] The target base station returns a failure / error message.

[0290] 7. The message sent by LMF to the target base station may be:

[0291] Define a new message, such as NRPPa message, Positioning information update request, which includes the above PRS configuration information;

[0292] Utilize the existing message and add a new IE in the existing message, the new IE carrying the above PRS configuration information; for example, add an IE carrying the PRS configuration information in the existing positioning information request (positioning information request) or arrival time difference positioning information request (OTDOA information request) message.

[0293] The embodiment of the present invention further provides an information transmission device, which is applied to a base station. Figure 6 Schematic diagram of the structure of the information transmission device 100 provided in an embodiment of the present invention; Figure 6 As shown, the apparatus 100 includes: a first determining module 110, wherein:

[0294] The first determination module 110 is configured to determine a first PRS configuration for sending a first PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by the second base station to send a second PRS; wherein the degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition.

[0295] In one embodiment, the apparatus 100 further includes:

[0296] The first receiving module 120 is configured to receive a third PRS configuration sent by the core network, where the third PRS configuration includes: the first PRS configuration and / or the second PRS configuration;

[0297] The first determining module 110 includes:

[0298] A first acquisition submodule 111 is configured to acquire the first PRS configuration generated based on the second PRS configuration and issued by the core network;

[0299] or,

[0300] A first determining submodule 112 is configured to determine the first PRS configuration according to the second PRS configuration issued by the core network;

[0301] or,

[0302] The second acquisition submodule 113 is configured to obtain at least one candidate first PRS configuration generated based on the second PRS configuration and the second PRS configuration issued by the core network; determine a first PRS configuration according to the second PRS configuration issued by the core network, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0303] In one embodiment, the first determining submodule 112 includes:

[0304] The first determining unit 1121 is configured to perform PRS interference coordination according to the second PRS configuration to determine the first PRS configuration.

[0305] In one embodiment, the second PRS configuration is determined based on a positioning service requirement of the user equipment.

[0306] In one embodiment, the first receiving module 120 includes:

[0307] The first receiving submodule 121 is configured to receive a New Radio Positioning Protocol NRPPa message carrying the third PRS configuration.

[0308] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0309] A first IE, comprising: the third PRS configuration;

[0310] The second IE includes: indication information for requesting positioning information.

[0311] In one embodiment, the apparatus 100 further includes one of the following:

[0312] A first sending module 130, configured to send a successful reception indication in response to successful reception of the third PRS configuration;

[0313] A second sending module 140, configured to send a reception failure indication when reception of the third PRS configuration fails;

[0314] A third sending module 150 is configured to send feedback information in response to the third PRS configuration sent by the core network, where the feedback information is used to indicate that the first PRS configuration is successfully determined according to the second PRS configuration sent by the core network;

[0315] The fourth sending module 160 is configured to send feedback information in response to the third PRS configuration sent by the core network, where the feedback information is used to indicate that the first PRS configuration cannot be successfully determined according to the second PRS configuration sent by the core network;

[0316] The fifth sending module 170 is configured to send the first PRS configuration in response to successfully determining the first PRS configuration according to the third PRS configuration sent by the core network.

[0317] In one embodiment, the third PRS configuration includes: PRS bandwidth configuration, and / or PRS configuration index configuration, and / or PRS muting configuration, and / or PRS identifier configuration, and / or PRS transmission timing identifier configuration.

[0318] The embodiment of the present invention further provides an information transmission device, which is applied to a base station. Figure 7 Schematic diagram of the structure of the information transmission device 200 provided in the embodiment of the present invention; Figure 7 As shown, the device 200 includes: a fifth sending module 210, wherein:

[0319] The fifth sending module 210 is configured to send a third PRS configuration to the first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send the first PRS, and / or a second PRS configuration used when the second base station sends the second PRS, wherein the second PRS configuration is used for the first base station to determine the first PRS configuration;

[0320] The degree of interference between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition.

[0321] In one embodiment, the fifth sending module 210 includes:

[0322] A first sending submodule 211, configured to generate the first PRS configuration according to the second PRS configuration, and send the first PRS configuration to the first base station;

[0323] or,

[0324] A second sending submodule 212 is configured to send the second PRS configuration to the first base station, so that the first base station determines the first PRS configuration according to the second PRS configuration;

[0325] or,

[0326] The third sending submodule 213 is configured to send at least one candidate first PRS configuration generated according to the second PRS configuration and the second PRS configuration to the first base station; so that the first base station determines a first PRS configuration according to the second PRS configuration, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

[0327] In one embodiment, the apparatus 200 further includes:

[0328] The second determination module 220 is configured to determine the second PRS configuration based on the positioning service requirement of the user equipment.

[0329] In one embodiment, the apparatus 200 further includes:

[0330] The interference coordination module 230 is configured to perform PRS interference coordination according to the second PRS configuration, and determine the first PRS configuration and / or the candidate first PRS configuration.

[0331] In one embodiment, the fifth sending module 210 includes:

[0332] The fourth sending submodule 214 is configured to send the third PRS configuration to the first base station that meets the interference condition in the wireless signal measurement report reported by the user equipment;

[0333] or,

[0334] The fifth sending submodule 215 is configured to send the third PRS configuration to the first base station within a predetermined distance range of the second base station.

[0335] In one embodiment, the apparatus 200 further includes:

[0336] The second receiving module 240 is configured to receive a fourth PRS configuration sent by the second base station, wherein the fourth PRS configuration is determined based on a positioning service requirement of the user equipment;

[0337] The third determination module 250 is configured to determine the second PRS configuration according to the fourth PRS configuration.

[0338] In one embodiment, the fifth sending module 210 includes:

[0339] The sixth sending submodule 216 is configured to send a New Radio Positioning Protocol NRPPa message carrying the third PRS configuration to the first base station.

[0340] In one embodiment, the NRPPa message includes at least one of the following information elements IE:

[0341] A first IE, comprising: the third PRS configuration;

[0342] The second IE includes: indication information for requesting positioning information.

[0343] In one embodiment, the apparatus 200 further includes one of the following:

[0344] A fourth determination module 260 is configured to determine, according to the received successful reception indication, that the third PRS configuration is received successfully;

[0345] A fifth determination module 270 is configured to determine, according to the received reception failure indication, that the third PRS configuration reception fails;

[0346] A sixth determination module 280 is configured to determine, based on the received feedback information, whether the first base station successfully determines the first PRS configuration based on the third PRS configuration; or, based on the received feedback information, determine that the first base station fails to successfully determine the first PRS configuration based on the third PRS configuration;

[0347] The third receiving module 290 is configured to receive the first PRS configuration returned by the first base station.

[0348] In one embodiment, the third PRS configuration includes at least one of the following parameters:

[0349] PRS bandwidth configuration,

[0350] PRS configuration index configuration,

[0351] PRS silent configuration,

[0352] PRS logo configuration,

[0353] PRS sending timing flag configuration.

[0354] In an exemplary embodiment, the first determination module 110, the first receiving module 120, the first sending module 130, the second sending module 140, the third sending module 150, the fourth sending module 160, the fifth sending module 170, the fifth sending module 210, the second determination module 220, the interference coordination module 230, the second receiving module 240, the third determination module 250, the fourth determination module 260, the fifth determination module 270, the sixth determination module 280, and the third receiving module 290, etc. can be one or more central processing units (CPU, Central Processing Unit), graphics processing units (GPU, Graphics Processing Unit), baseband processors (BP, baseband processor), application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic devices (PLD, Programmable Logic Device), complex programmable logic devices (CPLD, Complex Programmable Logic Device), field programmable gate arrays (FPGA, Field-Programmable Gate Array), general processors, controllers, microcontrollers (MCU, MicroController Unit), microprocessor (Microprocessor), or other electronic components, and can also be combined with one or more radio frequency (RF, radio frequency) antennas to execute the above method.

[0355] Figure 83000 is a block diagram of an apparatus 3000 for information transmission according to an exemplary embodiment. For example, the apparatus 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0356] Reference Figure 8 , the device 3000 may include one or more of the following components: a processing component 3002 , a memory 3004 , a power component 3006 , a multimedia component 3008 , an audio component 3010 , an input / output (I / O) interface 3012 , a sensor component 3014 , and a communication component 3016 .

[0357] The processing component 3002 generally controls the overall operation of the device 3000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 3002 may include one or more modules to facilitate the interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate the interaction between the multimedia component 3008 and the processing component 3002.

[0358] The memory 3004 is configured to store various types of data to support operations on the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc. The memory 3004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, 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 disk or optical disk.

[0359] The power supply component 3006 provides power to the various components of the device 3000. The power supply component 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 3000.

[0360] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 3008 includes a front camera and / or a rear camera. When the device 3000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0361] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes a microphone (MIC), and when the device 3000 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 3004 or sent via the communication component 3016. In some embodiments, the audio component 3010 also includes a speaker for outputting audio signals.

[0362] I / O interface 3012 provides an interface between processing component 3002 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0363] The sensor assembly 3014 includes one or more sensors for providing various aspects of status assessment for the device 3000. For example, the sensor assembly 3014 can detect the open / closed state of the device 3000, the relative positioning of components, such as the display and keypad of the device 3000, the sensor assembly 3014 can also detect the position change of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, the orientation or acceleration / deceleration of the device 3000 and the temperature change of the device 3000. The sensor assembly 3014 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 3014 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 3014 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0364] The communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices. The device 3000 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0365] In an exemplary embodiment, the apparatus 3000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

[0366] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 3004 including instructions, and the instructions can be executed by the processor 3020 of the device 3000 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0367] Those skilled in the art will readily appreciate other implementations of the embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the present invention that follow the general principles of the embodiments of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the embodiments of the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the embodiments of the present invention are indicated by the following claims.

[0368] It should be understood that the embodiments of the present invention are not limited to the precise structures described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present invention is limited only by the appended claims.

Claims

1. A method for transmitting information, wherein: Applied to a first base station, the method includes: Determine a first PRS configuration for sending a first positioning reference signal PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by the second base station to send a second PRS; wherein the degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition; The interference level meeting the low interference condition includes at least one of the following: there is no interference between the first PRS and the second PRS; the interference level between the first PRS and the second PRS is lower than an interference threshold; The absence of interference between the first PRS and the second PRS includes at least one of the following: the first PRS and the second PRS are orthogonal in the time domain; and the signal coverage area of ​​the first PRS and the signal coverage area of ​​the second PRS do not overlap.

2. The method according to claim 1, wherein: The method further comprises: receiving a third PRS configuration sent by a core network, where the third PRS configuration includes: the first PRS configuration and / or the second PRS configuration; The determining a first PRS configuration for sending a first PRS includes: Acquire the first PRS configuration generated based on the second PRS configuration and issued by the core network; or, Determine the first PRS configuration according to the second PRS configuration issued by the core network; or, Obtain at least one candidate first PRS configuration generated based on the second PRS configuration and the second PRS configuration issued by the core network; determine a first PRS configuration according to the second PRS configuration issued by the core network, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

3. The method according to claim 2, wherein: The determining, according to the second PRS configuration issued by the core network, the first PRS configuration includes: Perform PRS interference coordination according to the second PRS configuration to determine the first PRS configuration.

4. The method according to claim 2, wherein: The second PRS configuration is determined based on a positioning service requirement of the user equipment.

5. The method according to claim 2, wherein: The receiving a third PRS configuration sent by the core network includes: A New Radio Positioning Protocol NRPPa message carrying the third PRS configuration is received.

6. The method according to claim 5, wherein: The NRPPa message includes one of the following: First information element IE; the first IE and the second IE; The first IE includes the third PRS configuration; the second IE includes indication information for requesting positioning information.

7. The method according to any one of claims 2 to 5, wherein: The method further comprises one of the following: In response to successful reception of the third PRS configuration, sending a successful reception indication; In response to a failure to receive the third PRS configuration, sending a reception failure indication; In response to the third PRS configuration sent by the core network, sending first feedback information, where the first feedback information is used to indicate that the first PRS configuration is successfully determined according to the second PRS configuration sent by the core network; In response to the third PRS configuration sent by the core network, sending second feedback information, where the second feedback information is used to indicate that the first PRS configuration cannot be successfully determined according to the second PRS configuration sent by the core network; In response to successfully determining the first PRS configuration according to the third PRS configuration sent by the core network, the first PRS configuration is sent.

8. The method according to any one of claims 2 to 5, wherein: The third PRS configuration includes at least one of the following: PRS bandwidth configuration, PRS configuration index configuration, PRS silent configuration, PRS logo configuration, PRS sending timing flag configuration.

9. A method for transmitting information, wherein: Applied to a core network, the method comprises: Sending a third positioning reference signal PRS configuration to the first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send the first PRS, and / or a second PRS configuration used when the second base station sends the second PRS; wherein the second PRS configuration is used for the first base station to determine the first PRS configuration; The interference degree between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition; The interference level meeting the low interference condition includes at least one of the following: there is no interference between the first PRS and the second PRS; the interference level between the first PRS and the second PRS is lower than an interference threshold; The absence of interference between the first PRS and the second PRS includes at least one of the following: the first PRS and the second PRS are orthogonal in the time domain; and the signal coverage area of ​​the first PRS and the signal coverage area of ​​the second PRS do not overlap.

10. The method according to claim 9, wherein: The sending a third positioning reference signal PRS configuration to the first base station includes: The first PRS configuration is generated according to the second PRS configuration, and the first PRS configuration is sent to the first base station; or, Sending the second PRS configuration to the first base station, so that the first base station determines the first PRS configuration according to the second PRS configuration; or, At least one candidate first PRS configuration generated according to the second PRS configuration and the second PRS configuration are sent to the first base station; so that the first base station determines a first PRS configuration according to the second PRS configuration, wherein the first PRS configuration is one of the at least one candidate first PRS configuration.

11. The method according to claim 9, wherein: The method further comprises: The second PRS configuration is determined based on a positioning service requirement of the user equipment.

12. The method according to claim 10, wherein: The method further comprises: PRS interference coordination is performed according to the second PRS configuration to determine the first PRS configuration and / or the candidate first PRS configuration.

13. The method according to claim 9, wherein: The sending the third PRS configuration to the first base station includes: Sending the third PRS configuration to the first base station that meets the interference condition in the wireless signal measurement report reported by the user equipment; or; The third PRS configuration is sent to the first base station within a predetermined distance range of the second base station.

14. The method according to any one of claims 9 to 13, wherein: The method further comprises: Receiving a fourth PRS configuration sent by the second base station, wherein the fourth PRS configuration is determined based on a positioning service requirement of the user equipment; The second PRS configuration is determined according to the fourth PRS configuration.

15. The method according to any one of claims 9 to 13, wherein: The sending the third PRS configuration to the first base station includes: Send a New Radio Positioning Protocol NRPPa message carrying the third PRS configuration to the first base station.

16. The method according to claim 15, wherein: The NRPPa message includes at least one of the following: First information element IE; the first IE and the second IE; The first IE includes the third PRS configuration; the second IE includes indication information for requesting positioning information.

17. The method according to any one of claims 9 to 13, wherein: The method further comprises one of the following: Determining, according to the received successful reception indication, that the third PRS configuration is received successfully; Determining, according to the received reception failure indication, that reception of the third PRS configuration fails; Determine, according to the received first feedback information, that the first base station successfully determines the first PRS configuration according to the third PRS configuration; determining, according to the received second feedback information, that the first base station fails to successfully determine the first PRS configuration according to the third PRS configuration; Receive the first PRS configuration returned by the first base station.

18. The method according to any one of claims 9 to 13, wherein: The third PRS configuration includes at least one of the following parameters: PRS bandwidth configuration, PRS configuration index configuration, PRS silent configuration, PRS logo configuration, PRS sending timing flag configuration.

19. An information transmission device, wherein: Applied to a first base station, the device includes: a first determining module, wherein: The first determination module is configured to determine a first PRS configuration for sending a first positioning reference signal PRS, wherein the first PRS configuration is determined based on a second PRS configuration used by the second base station when sending a second PRS; wherein the degree of interference between the first PRS sent by the first base station according to the first PRS configuration and the second PRS sent by the second base station according to the second PRS configuration satisfies a low interference condition; The interference level meeting the low interference condition includes at least one of the following: there is no interference between the first PRS and the second PRS; the interference level between the first PRS and the second PRS is lower than an interference threshold; The absence of interference between the first PRS and the second PRS includes at least one of the following: the first PRS and the second PRS are orthogonal in the time domain; and the signal coverage area of ​​the first PRS and the signal coverage area of ​​the second PRS do not overlap.

20. An information transmission device, wherein: Applied to a core network, the device comprises: a fifth sending module, wherein: The fifth sending module is configured to send a third positioning reference signal PRS configuration to the first base station, wherein the third PRS configuration includes: a first PRS configuration for the first base station to send the first PRS or a second PRS configuration used when the second base station sends the second PRS, wherein the second PRS configuration is used for the first base station to determine the first PRS configuration; The interference degree between the first PRS sent by the first base station using the first PRS configuration and the second PRS sent by the second base station using the second PRS configuration meets a low interference condition; The interference level meeting the low interference condition includes at least one of the following: there is no interference between the first PRS and the second PRS; the interference level between the first PRS and the second PRS is lower than an interference threshold; The absence of interference between the first PRS and the second PRS includes at least one of the following: the first PRS and the second PRS are orthogonal in the time domain; and the signal coverage area of ​​the first PRS and the signal coverage area of ​​the second PRS do not overlap.

21. A communication device, comprising a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein the processor executes the steps of the information transmission method as claimed in any one of claims 1 to 8 or 9 to 18 when running the executable program.

22. A storage medium storing an executable program, wherein the executable program, when executed by a processor, implements the steps of the information transmission method according to any one of claims 1 to 8 or 9 to 18.

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