CN111586554B

CN111586554B - Method for generating PRS sequence, terminal equipment and positioning equipment

Info

Publication number: CN111586554B
Application number: CN201910117860.6A
Authority: CN
Inventors: 史桢宇; 黄甦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2021-12-24
Anticipated expiration: 2039-02-15
Also published as: CN111586554A; WO2020164324A1

Abstract

The application provides a method and a device for generating a PRS sequence. The method comprises the following steps: receiving auxiliary information from a positioning management function module LMF, wherein the auxiliary information comprises positioning reference signal PRS configuration index, PRS identification and absolute time information of a system frame number SFN of a neighbor cell of a terminal device, and the PRS identification comprises a PRS identification of a serving cell and a PRS identification of the neighbor cell; generating a PRS sequence of the serving cell according to the PRS configuration index and the PRS identification of the serving cell; and generating a PRS sequence of the neighbor cell according to the PRS configuration index, the absolute time information of the SFN of the neighbor cell and the PRS identification of the neighbor cell. The PRS sequence of the neighbor cell can be generated more accurately.

Description

Method for generating PRS sequence, terminal equipment and positioning equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, a terminal device, and a positioning device for generating a PRS sequence.

Background

In order to realize the positioning of the terminal device, a Positioning Reference Signal (PRS) sequence of the serving cell and a PRS sequence of the neighbor cell may be generated at the terminal device side, and then signals received from base stations of the serving cell and the neighbor cell are processed in a related manner according to the PRS sequence of the serving cell and the PRS sequence of the neighbor cell, so as to obtain delay related information of the serving cell and the neighbor cell, and finally, the position of the terminal device is determined according to the delay related information of the serving cell and the neighbor cell.

Specifically, PRS sequences of the serving cell and the neighbor cell need to be generated according to a PRS Identity (ID) and a subframe/slot (slot) number where the PRS is located.

When the serving cell and the neighbor cell are synchronized, subframe/slot numbers where PRSs of the serving cell and the neighbor cell are located may be obtained by a start time and a PRS configuration index (PRS configuration index). When the serving cell and the neighbor cell are not synchronized, the serving cell obtains subframe/slot numbers in a constant manner, but the neighbor cell needs to determine the number of subframes different from the neighbor cell and the serving cell in one period according to PRS subframe offset (PRS subframe offset), and then determine the subframe/slot number where the PRS is located through PRS configuration indexes.

However, in some cases, for example, when the PRS period is short, the subframe/slot number obtained according to the PRS subframe offset may not be consistent with the actual subframe/slot number, so that the generated PRS sequence of the neighbor cell is not the PRS corresponding to the current subframe/slot, and the terminal device is affected not to detect the PRS of the neighbor cell, so that the terminal device cannot acquire the positioning measurement result. The positioning measurement result of the neighbor cell cannot be detected, so that the positioning accuracy of the terminal equipment is influenced.

Disclosure of Invention

The application provides a method for generating a PRS sequence, a terminal device and a positioning device, so as to generate the PRS sequence more accurately.

In a first aspect, a method for generating a PRS sequence is provided, where the method includes: receiving auxiliary information from a positioning management function module LMF, wherein the auxiliary information comprises positioning reference signal PRS configuration index, PRS identification and absolute time information of a system frame number SFN of a neighbor cell; generating a PRS sequence of the serving cell according to the PRS configuration index and a PRS identification of the serving cell; and generating a PRS sequence of the neighbor cell according to the PRS configuration index, the absolute time information of the SFN of the neighbor cell and the PRS identification of the neighbor cell.

The PRS identifier in the auxiliary information includes a PRS identifier of a serving cell and PRS identifiers of neighbor cells.

The Location Management Function (LMF) module may be a module located in the core network device, and the LMF may send location related information to the terminal device.

It should be understood that the number of the serving cells may be one, and the number of the neighbor cells may be two or more.

Optionally, the method further includes: performing relevant processing on first downlink data from a serving cell according to a PRS sequence of the serving cell to obtain a first type of time delay; performing relevant processing on second downlink data from the neighbor cell according to the PRS sequence of the neighbor cell to obtain a second type of time delay; and determining the position of the terminal equipment according to the first type of time delay and the second type of time delay.

The first type of time delay is a time delay between the time when the base station in the serving cell sends the first downlink data and the time when the terminal equipment receives the first downlink data; the second type of time delay is a time delay between the time when the base station in the neighbor cell transmits the second downlink data and the time when the terminal device receives the second downlink data.

The base station may be a base station in a Long Term Evolution (LTE) system, or may also be a base station in a New Radio (NR) system, or may also be a Transmission Point (TP), a transmit/receive point (TRP), or the like, and the present application does not particularly limit the base station.

In the application, the PRS configuration index of the neighbor cell is determined by adopting the absolute time of the SFN of the neighbor cell, and the PRS sequence of the neighbor cell can be determined more accurately no matter whether the neighbor cell and the serving cell are synchronous or not.

With reference to the first aspect, in certain implementations of the first aspect, the absolute time information of the SFN of the neighbor cell is a start time of the SFN of the neighbor cell.

By adding the starting time of the SFN of the neighbor cell into the auxiliary information sent by the LMF, the terminal equipment can acquire the starting time of the SFN of the neighbor cell, and then the PRS sequence of the neighbor cell can be generated according to the starting time of the SFN of the neighbor cell.

With reference to the first aspect, in certain implementations of the first aspect, the generating a PRS sequence for the serving cell according to the PRS configuration index includes: and generating a PRS sequence of the serving cell according to the PRS configuration index, the PRS identification of the serving cell and the starting time of the SFN of the serving cell.

When the terminal device accesses the serving cell, the start time of the SFN of the serving cell can be directly obtained from the serving cell, and then the PRS sequence of the serving cell can be generated.

With reference to the first aspect, in certain implementations of the first aspect, the absolute time information of the SFN of the neighbor cell is a frame number of a PRS transmitted by the neighbor cell.

When the absolute time information of the SFN is the frame number of the PRS sent by the neighbor cell, the frame of the PRS can be determined when the PRS is sent in a non-periodic manner, so that a PRS sequence is generated, and the position of the PRS in a frequency domain can be determined according to the frame number of the PRS when the PRS has frequency hopping.

With reference to the first aspect, in certain implementations of the first aspect, the assistance information further includes a frame number of a PRS transmitted by a serving cell of the terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the generating a PRS sequence for the serving cell according to the PRS configuration index includes: and generating a PRS sequence of the serving cell according to the PRS configuration index and a frame number of the PRS sent by the serving cell.

With reference to the first aspect, in certain implementations of the first aspect, the PRS configuration index is a subframe level index, or the PRS configuration index is a slot level index.

With reference to the first aspect, in certain implementations of the first aspect, the number of slots of the period of the PRS, which is transmitted to the terminal device by the serving cell and/or the neighbor cell, is less than the number of slots included in one subframe.

In a second aspect, a method for generating a PRS sequence is provided, the method comprising: generating assistance information, the assistance information comprising Positioning Reference Signal (PRS) configuration index, PRS identification and absolute time information of a System Frame Number (SFN) of a neighbor cell; and sending the auxiliary information to a terminal device, wherein the auxiliary information is used for the terminal device to generate a PRS sequence of the neighbor cell and a PRS sequence of a serving cell of the terminal device.

With reference to the second aspect, in certain implementations of the second aspect, the absolute time information of the SFN of the neighbor cell is a start time of the SFN of the neighbor cell.

By adding the starting time of the SFN of the neighbor cell to the auxiliary information sent by the LMF, the terminal equipment can generate the PRS sequence of the neighbor cell according to the starting time of the SFN of the neighbor cell.

With reference to the second aspect, in some implementations of the second aspect, the absolute time information of the SFN of the neighbor cell is a frame number of a PRS transmitted by the neighbor cell.

With reference to the second aspect, in some implementations of the second aspect, the assistance information further includes a frame number of a PRS transmitted by a serving cell of the terminal device.

With reference to the second aspect, in certain implementations of the second aspect, the PRS configuration index is a subframe-level index or the PRS configuration index is a slot-level index.

With reference to the second aspect, in some implementations of the second aspect, the number of slots of the periodicity of the PRS transmitted by the serving cell and/or the neighbor cell to the terminal device is less than the number of slots contained in one subframe.

In a third aspect, a terminal device is provided, where the terminal device includes a module corresponding to the method/operation/step/action described in the first aspect, and the module may be a hardware circuit, or may be software, or may be implemented by a hardware circuit in combination with software.

In a fourth aspect, a positioning apparatus is provided, where the positioning apparatus includes a module corresponding to the method/operation/step/action described in the second aspect, and the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit.

In a fifth aspect, a terminal device is provided, which includes a processor and a transceiver, and may further include a memory. The processor is configured to invoke the program code stored in the memory to perform some or all of the operations in any of the manners described above in connection with the first aspect.

In particular, the transceiver and the processor are configured to perform some or all of the operations in any of the above-described first aspects when the processor invokes the program code stored in the memory.

Optionally, the memory is a non-volatile memory.

Optionally, the memory and the processor are coupled to each other.

In a sixth aspect, a positioning device is provided that includes a processor and a transceiver, and may further include a memory. The processor is configured to call the program code stored in the memory to perform part or all of the operations of any one of the above-described second aspects.

In particular, the transceiver and the processor are adapted to perform some or all of the operations of any of the above described second aspects when the processor invokes the program code stored in the memory.

Optionally, the memory is a non-volatile memory.

Optionally, the memory and the processor are coupled to each other.

In a seventh aspect, this application provides a computer-readable storage medium storing program code, where the program code includes instructions for performing part or all of the steps of any one of the methods in the first aspect or the second aspect.

Optionally, the computer-readable storage medium is located in a terminal device or a positioning device.

In an eighth aspect, embodiments of the present application provide a computer program product, which when run on a computer, causes the computer to perform some or all of the steps of any one of the methods of the first aspect or the second aspect.

In a ninth aspect, a chip is provided, where the chip includes a processor, and the processor is configured to perform some or all of the operations in any one of the first aspect or the second aspect.

Optionally, the chip is located inside a positioning device or a terminal device.

Drawings

FIG. 1 is a schematic diagram of a possible application scenario of an embodiment of the present application;

FIG. 2 is a schematic flow chart diagram of a method of generating a PRS sequence in an embodiment of the present application;

FIG. 3 is a schematic diagram of a process for user equipment location;

FIG. 4 is a schematic diagram of a process for user equipment location;

FIG. 5 is a schematic flow chart diagram of a method of generating a PRS sequence in an embodiment of the present application;

fig. 6 is a schematic block diagram of a terminal device of an embodiment of the present application;

FIG. 7 is a schematic block diagram of a positioning apparatus of an embodiment of the present application;

fig. 8 is a schematic block diagram of a terminal device of an embodiment of the present application;

fig. 9 is a schematic block diagram of a positioning apparatus of an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth generation (5G) or new radio NR systems, etc.

A terminal device in this embodiment may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.

For convenience of description, the UE will be described as an example in this application.

The base station in this embodiment may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved base station (evolved NodeB, eNB, or eNodeB) in an LTE system, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and a base station in a future 5G network or a base station in a future evolved PLMN network, and may also be a TP, a TRP, and the like, which is not limited in this embodiment.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

Fig. 1 is a schematic diagram of a possible application scenario of an embodiment of the present application.

The communication system shown in fig. 1 includes a terminal device and a core network device, where the terminal device is in the coverage of three cells, and besides a serving cell, the communication system also has two neighbor cells, a neighbor cell 1 and a neighbor cell 2. The neighbor cell 1 corresponds to the base station 1, the neighbor cell 2 corresponds to the base station 2, and the serving cell corresponds to the base station 3. In the communication system shown in fig. 1, a terminal device may determine PRS sequences of a serving cell and a neighboring cell by receiving assistance information sent by an LMF in a core network device.

Fig. 2 is a schematic flow chart of a method of generating a PRS sequence according to an embodiment of the present application. The method shown in fig. 2 includes steps 1001 to 1003, which are described in detail below.

1001. And receiving the auxiliary information from a positioning management function module LMF.

The assistance information includes Positioning Reference Signal (PRS) configuration index, PRS identification, and absolute time information of SFN of the neighbor cell of the terminal device. Wherein the PRS identity comprises a PRS identity of the serving cell and a PRS identity of the neighbor cell.

The LMF may be a module located in the core network device, and the LMF may send the location-related information to the terminal device.

A configuration table of the PRS configuration index may be as shown in table 1, after the PRS configuration index is obtained, a number of offset subframes of a subframe where the PRS is located in different PRS periods relative to a period starting point may be determined according to table 1 (in LTE, the offset may be in units of subframes), so as to obtain a subframe/slot identifier where the PRS is located, and further generate a PRS sequence.

TABLE 1

1002. And generating a PRS sequence of the serving cell according to the PRS configuration index and the PRS identification of the serving cell.

Wherein the PRS sequence can be generated according to a random seed, wherein the PRS sequence is based on a third Generation partnership project (3)^rdgeneration partnership project, 3GPP) one possible random seed as defined in standard 36.211 is shown in equation (1).

As shown in formula (1), the random seed is mainly determined by the following four parameters, which are described below.

The ID of the PRS indicates the PRS which base station sends the downlink reference information, the information is contained in PRS-Info in the downlink auxiliary information and explicitly indicates the information to the terminal equipment;

N_CP: indicating the Cyclic Prefix (CP) length, mainly indicating whether normal CP or extended CP, and the same information is included in the downlinkIn the cpLength of the auxiliary information, explicitly indicating the cpLength to the UE;

l: orthogonal Frequency Division Multiplexing (OFDM) symbol index, which is determined to be normal CP or extended CP due to the relatively fixed pattern of PRS in LTE, and which PRS is determined on which symbol in a slot, without special indication and transmission, information known by both the base station and the UE can be considered;

n_s: slot index, which is not explicitly reported to the terminal device, and needs the terminal device to obtain the information by itself through other information, and how to obtain the slot identifier of the PRS through other information is described in detail below.

1003. And generating a PRS sequence of the neighbor cell according to the PRS configuration index, absolute time information of a System Frame Number (SFN) of the neighbor cell and a PRS identification of the neighbor cell.

Optionally, the method shown in fig. 2 above further includes: performing relevant processing on first downlink data from a serving cell according to a PRS sequence of the serving cell to obtain a first type of time delay; performing relevant processing on second downlink data from the neighbor cell according to the PRS sequence of the neighbor cell to obtain a second type of time delay; and determining the position of the terminal equipment according to the first type of time delay and the second type of time delay.

The first type of delay may comprise one delay value, and the second type of delay may comprise two or more delay values, so that the current position of the terminal device can be determined according to the first type of delay and the second type of delay.

Optionally, as an embodiment, the absolute time information of the SFN of the neighbor cell is a start time (SFN0initial time) of the SFN of the neighbor cell.

Specifically, the start time of the SFN may be carried in a field OTDOA-neighbor cell info element, where the OTDOA in the field is observed time difference of arrival (OTDOA), the field is a field carrying auxiliary information of a neighbor cell, and the content of the field is specifically as follows:

The start time of the SFN of the neighbor cell represents the actual start time of the neighbor cell, which may be used to help the terminal device to determine the actual SFN. Specifically, the definition of the starting time here may be based on the definition in the 3GPP 36.455 protocol, and the specific time is represented by 64 bits, and the specific definition may be as shown in table 2:

TABLE 2

Alternatively, the absolute time information of the neighbor cell may be a time difference between the start time of the SFN of the neighbor cell and the start time of the SFN of the serving cell. The unit of the time difference is similar to the definition of the start time of the SFN, and the specific unit may be a specific time or a slot (slot)/subframe (subframe)/frame (frame) number.

The PRS configuration index (PRS configuration index) originally in units of subframes (subframes) may be modified to a PRS configuration index in units of slots (slots).

The configuration table of the modified PRS configuration index may be as shown in table 3.

TABLE 3

Table 3 differs from table 1 in that the PRS periods and PRS offsets in table 3 are both in slot units, and the PRS periods and PRS offsets in table 2 are both in subframe units, table 3 has smaller granularity of quantization than table 1.

To better illustrate the whole process of positioning by the terminal device when the absolute time information of the SFN of the neighbor cell is the start time of the SFN of the neighbor cell, the following describes the process with reference to fig. 3.

Fig. 3 is a schematic diagram of a user equipment location process. The method shown in fig. 3 comprises:

2001. the LMF sends assistance information to the UE.

In step 2001, the LMF may transmit assistance information to the UE through the base station, the assistance information adding a start time of the SFN of the neighbor cell, and the assistance information further including the PRS configuration index.

2002. The UE generates a PRS sequence for the serving cell and PRS sequences for neighbor cells.

When the UE is accessed to the serving cell, the SFN starting time of the serving cell is already known, then the time slot identifier of the PRS of the serving cell is obtained based on the PRS configuration index, and then the PRS sequence of the serving cell can be generated according to the time slot identifier of the PRS and the PRS identifier of the serving cell.

For the neighbor cell, the UE may first determine a position of the PRS at a frame (frame) level according to its own clock and a start time of the received SFN of the neighbor cell, then obtain a slot identifier of the PRS of the neighbor cell based on the PRS configuration index, and finally generate a PRS sequence of the neighbor cell according to the slot identifier of the PRS and the PRS identifier of the neighbor cell.

2003. Multiple base stations transmit PRSs to the UE.

The plurality of base stations include a base station corresponding to a serving cell and a base station corresponding to a neighbor cell.

2004. And the UE performs related processing on the downlink data received from the plurality of base stations according to the generated PRS sequence to obtain the time delay from the time of the downlink data sent by the base stations to the time of the downlink data received by the UE.

After obtaining the time delays, the terminal device may be located according to the time delays.

In addition, in step 201, the auxiliary information sent by the LMF to the UE may also be a time difference between the start time of the SFN of the neighbor cell and the start time of the SFN of the serving cell, so that after the UE acquires the time difference, the start time of the SFN of the neighbor cell can be determined according to the start time of the SFN of the serving cell and the time difference.

Optionally, as an embodiment, the generating a PRS sequence of the serving cell according to the PRS configuration index includes: and generating a PRS sequence of the serving cell according to the PRS configuration index, the PRS identification of the serving cell and the starting time of the SFN of the serving cell.

When the terminal equipment accesses the serving cell, the terminal equipment can directly acquire the start time of the SFN of the serving cell from the serving cell, and then can generate the PRS sequence of the serving cell.

Optionally, as an embodiment, the absolute time information of the SFN of the neighbor cell is a frame number of the PRS transmitted by the neighbor cell.

In the application, when the absolute time information of the SFN is the frame number of the PRS sent by the neighbor cell, the SFN information can be directly obtained by the terminal equipment side without calculation, so that the calculation complexity of the terminal equipment can be simplified.

To better illustrate that the absolute time information of the SFN of the neighbor cell is the frame number of the PRS transmitted by the neighbor cell, the whole process of positioning by the terminal device is described below with reference to fig. 4.

Fig. 4 is a schematic diagram of a user equipment location procedure. The method shown in fig. 4 includes:

3001. the LMF sends assistance information to the UE.

In step 3001, the LMF may transmit, to the UE, assistance information through the base station, where the assistance information adds a frame number where a PRS transmitted by a neighbor cell is located, and the assistance information further includes a PRS configuration index and a PRS identifier, where the PRS identifier includes a PRS identifier of a serving cell and a PRS identifier of a neighbor cell.

3002. The UE generates a PRS sequence for the serving cell and PRS sequences for neighbor cells.

3003. Multiple base stations transmit PRSs to the UE.

3004. And the UE performs related processing on the downlink data received from the plurality of base stations according to the generated PRS sequence to obtain the time delay from the time of the downlink data sent by the base stations to the time of the downlink data received by the UE.

Optionally, in step 3001, the auxiliary information may also include a frame number of the PRS transmitted by the serving cell, in addition to the frame number of the PRS transmitted by the neighbor cell.

Therefore, the UE can acquire the PRS identification of the serving cell according to the frame number of the PRS sent by the serving cell and the PRS configuration index, and further generate the PRS sequence of the serving cell.

Optionally, as an embodiment, the assistance information further includes a frame number of a PRS transmitted by a serving cell of the terminal device.

Optionally, as an embodiment, the generating a PRS sequence of the serving cell according to the PRS configuration index includes: and generating a PRS sequence of the serving cell according to the PRS configuration index and a frame number of the PRS sent by the serving cell.

Optionally, as an embodiment, the PRS configuration index is a subframe level index, or the PRS configuration index is a slot level index.

When the PRS configuration index is an index at a time slot level, a more accurate PRS sequence can be generated according to information such as the PRS configuration index.

Optionally, as an embodiment, the number of slots of the period of the PRS, which is sent to the terminal device by the serving cell and/or the neighbor cell, is less than the number of slots contained in one subframe.

The method for generating a PRS sequence in the embodiment of the present application is described above with reference to fig. 2 from the perspective of a terminal device, and the method for generating a PRS sequence in the embodiment of the present application is described below with reference to fig. 5 from the perspective of a positioning device. It should be understood that the generation method of the PRS sequence shown in fig. 2 corresponds to the generation method of the PRS sequence shown in fig. 5, and the definition and explanation of the related information in the generation method of the PRS sequence shown in fig. 2 are also applicable to the generation method of the PRS sequence shown in fig. 5, and the generation method of the PRS sequence shown in fig. 5 is described below.

Fig. 5 is a schematic flow chart of a method of generating a PRS sequence according to an embodiment of the present application. The method shown in fig. 5 includes steps 4001 to 4002, which are described below.

4001. Generating assistance information comprising a positioning reference signal, PRS, configuration index, a PRS identity, and absolute time information of a SFN of a neighbor cell of the terminal device.

The PRS mark includes a PRS mark of a serving cell and PRS marks of neighbor cells.

4002. And sending the auxiliary information to a terminal device, wherein the auxiliary information is used for the terminal device to generate a PRS sequence of the neighbor cell and a PRS sequence of a serving cell of the terminal device.

Optionally, as an embodiment, the absolute time information of the SFN of the neighbor cell is a start time of the SFN of the neighbor cell.

The generation method of the PRS sequence according to the embodiment of the present application is described in detail above with reference to fig. 2 to 5. The terminal device and the positioning device of the embodiment of the present application are described below with reference to fig. 6 to 9, and it should be understood that the terminal device and the positioning device shown in fig. 6 to 9 can perform corresponding steps in the generation method of the PRS sequence of the embodiment of the present application, and in order to avoid unnecessary repetition, the following description is appropriately omitted when describing the terminal device and the positioning device of the embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 5000 shown in fig. 6 includes:

a transceiver module 5001 configured to receive assistance information from a positioning management function module LMF, where the assistance information includes a positioning reference signal PRS configuration index, a PRS identifier and absolute time information of an SFN of a neighbor cell of a terminal device, where the PRS identifier includes a PRS identifier of a serving cell and a PRS identifier of the neighbor cell;

a processing module 5002 configured to generate a PRS sequence of a serving cell according to the PRS configuration index and a PRS identity of the serving cell;

the processing module 5002 is further configured to generate a PRS sequence of the neighbor cell according to the PRS configuration index and the absolute time information of the SFN and the PRS identity of the neighbor cell.

Optionally, as an embodiment, the processing module 5002 is configured to: and generating a PRS sequence of the serving cell according to the PRS configuration index and the starting time of the SFN of the serving cell.

Optionally, as an embodiment, the processing module 5002 is configured to: and generating a PRS sequence of the serving cell according to the PRS configuration index and a frame number of the PRS sent by the serving cell.

Fig. 7 is a schematic block diagram of a positioning apparatus of an embodiment of the present application. The terminal device 6000 shown in fig. 7 includes:

a processing module 6001 configured to generate assistance information comprising a positioning reference signal, PRS, configuration index, PRS identity, and absolute time information of SFN of a neighbor cell of the terminal device, wherein the identity comprises a PRS identity of a serving cell and a PRS identity of a neighbor cell;

a transceiving module 6002, configured to send the auxiliary information to a terminal device, where the auxiliary information is used for the terminal device to generate a PRS sequence of the neighbor cell and a PRS sequence of a serving cell of the terminal device.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 7000 shown in fig. 8 includes: a memory 7001, a transceiver 7002, and a processor 7003.

Wherein the memory 7001 is used for storing programs, the processor 7003 is used for executing the programs stored in the memory 7001, and the transceiver 7002 and the processor 7003 are used for executing the respective steps in the method shown in fig. 2 when the programs stored in the memory 7001 are executed by the processor 7003.

Processor 7003 in terminal apparatus 7000 corresponds to processing module 5002 in terminal apparatus 5000, and transceiver 7002 in terminal apparatus 7000 corresponds to transceiver module 5001 in terminal apparatus 5000.

Fig. 9 is a schematic block diagram of a positioning apparatus of an embodiment of the present application. The terminal device 8000 shown in fig. 9 includes: memory 8001, processor 8002, and transceiver 8003.

Wherein the memory 8001 is used to store programs, the processor 8002 is used to execute the programs stored in the memory 8001, and when the programs stored in the memory 8001 are executed by the processor 8002, the processor 8002 and the transceiver 8003 are used to perform the steps in the method shown in fig. 5.

The processor 8002 of the terminal device 8000 corresponds to the processing module 6001 of the terminal device 6000, and the transceiver 8003 of the terminal device 8000 corresponds to the transceiver module 6002 of the terminal device 6000.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of generating a PRS sequence, comprising:

receiving auxiliary information from a positioning management function module LMF, wherein the auxiliary information comprises positioning reference signal PRS configuration index, PRS identification and absolute time information of a system frame number SFN of a neighbor cell of a terminal device, and the PRS identification comprises a PRS identification of a serving cell and a PRS identification of the neighbor cell;

generating a PRS sequence of the serving cell according to the PRS configuration index and a PRS identification of the serving cell;

and generating a PRS sequence of the neighbor cell according to the PRS configuration index, the absolute time information of the SFN of the neighbor cell and the PRS identification of the neighbor cell, wherein the absolute time information of the SFN of the neighbor cell is the starting time of the SFN of the neighbor cell.

2. The method of claim 1, wherein the generating the PRS sequence for the serving cell according to the PRS configuration index and the PRS identity of the serving cell comprises:

and generating a PRS sequence of the serving cell according to the PRS configuration index, the PRS identification of the serving cell and the starting time of the SFN of the serving cell.

3. The method of claim 1 or 2, wherein the assistance information further comprises a frame number at which a PRS transmitted by a serving cell of the terminal device is located.

4. The method of claim 3, wherein the generating the PRS sequence for the serving cell according to the PRS configuration index comprises:

and generating a PRS sequence of the serving cell according to the PRS configuration index and a frame number of the PRS sent by the serving cell.

5. The method of claim 1 or 2, wherein the PRS configuration index is a subframe level index or the PRS configuration index is a slot level index.

6. The method according to claim 1 or 2, wherein the number of slots of the periodicity of PRSs transmitted by the serving cell and/or the neighbor cells to the terminal device is smaller than the number of slots contained in one subframe.

7. A method of generating a PRS sequence, comprising:

generating auxiliary information, wherein the auxiliary information comprises a Positioning Reference Signal (PRS) configuration index, a PRS identifier and absolute time information of a System Frame Number (SFN) of a neighbor cell of the terminal equipment, the PRS identifier comprises a PRS identifier of a serving cell and a PRS identifier of the neighbor cell, and the absolute time information of the SFN of the neighbor cell is the starting time of the SFN of the neighbor cell;

and sending the auxiliary information to a terminal device, wherein the auxiliary information is used for the terminal device to generate a PRS sequence of the neighbor cell and a PRS sequence of a serving cell of the terminal device.

8. The method of claim 7, wherein the assistance information further comprises a frame number at which a PRS transmitted by a serving cell of the terminal device is located.

9. The method of claim 7 or 8, wherein the PRS configuration index is a subframe-level index or the PRS configuration index is a slot-level index.

10. The method according to claim 7 or 8, wherein the number of slots of the periodicity of PRSs transmitted by the serving cell and/or the neighbor cells to the terminal device is smaller than the number of slots contained in one subframe.

11. A terminal device, comprising:

a transceiver module, configured to receive auxiliary information from a location management function module LMF, where the auxiliary information includes a PRS configuration index of a positioning reference signal, a PRS identifier, and absolute time information of a system frame number SFN of a neighbor cell of a terminal device, where the PRS identifier includes a PRS identifier of a serving cell and a PRS identifier of the neighbor cell, and the absolute time information of the SFN of the neighbor cell is a start time of the SFN of the neighbor cell;

a processing module, configured to generate a PRS sequence of a serving cell according to the PRS configuration index and a PRS identity of the serving cell;

the processing module is further configured to generate a PRS sequence of the neighbor cell according to the PRS configuration index, the absolute time information of the SFN of the neighbor cell, and the PRS identity of the neighbor cell.

12. The terminal device of claim 11, wherein the processing module is specifically configured to:

and generating a PRS sequence of the serving cell according to the PRS configuration index and the starting time of the SFN of the serving cell.

13. The terminal device of claim 11 or 12, wherein the assistance information further comprises a frame number at which a PRS transmitted by a serving cell of the terminal device is located.

14. The terminal device of claim 13, wherein the processing module is specifically configured to:

15. The terminal device of claim 11 or 12, wherein the PRS configuration index is a subframe level index or the PRS configuration index is a slot level index.

16. The terminal device of claim 11 or 12, wherein the number of slots of the periodicity of the PRS transmitted by the serving cell and/or the neighbor cell to the terminal device is smaller than the number of slots contained in one subframe.

17. A positioning apparatus, comprising:

a processing module, configured to generate auxiliary information, where the auxiliary information includes a positioning reference signal PRS configuration index, a PRS identifier, and absolute time information of a system frame number SFN of a neighbor cell of the terminal device, and the PRS identifier includes a PRS identifier of a serving cell and a PRS identifier of a neighbor cell, where the absolute time information of the SFN of the neighbor cell is a start time of the SFN of the neighbor cell;

a transceiver module, configured to send the auxiliary information to a terminal device, where the auxiliary information is used for the terminal device to generate a PRS sequence of the neighbor cell and a PRS sequence of a serving cell of the terminal device.

18. The positioning device of claim 17, wherein the assistance information further comprises a frame number at which a PRS transmitted by a serving cell of the terminal device is located.

19. The positioning apparatus of claim 17 or 18, wherein the PRS configuration index is a subframe level index or the PRS configuration index is a slot level index.

20. The positioning apparatus according to claim 17 or 18, wherein the number of slots of the periodicity of the PRS transmitted by the serving cell and/or the neighbor cell to the terminal apparatus is smaller than the number of slots contained in one subframe.

21. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program code comprising instructions for performing part or all of the steps of the method of any of claims 1-6 or claims 7-10.