WO2022012549A1

WO2022012549A1 - Positioning signal sending method and apparatus

Info

Publication number: WO2022012549A1
Application number: PCT/CN2021/106085
Authority: WO
Inventors: 王艺; 于莹洁; 黄甦
Original assignee: 华为技术有限公司
Priority date: 2020-07-15
Filing date: 2021-07-13
Publication date: 2022-01-20
Also published as: CN113950068A

Abstract

Disclosed are a positioning signal sending method and apparatus. The method comprises: a terminal selecting a first resource from a first resource pool, wherein the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device by means of the first cell; the terminal sending a sounding reference signal (SRS) to the network device by means of the first resource, wherein the SRS is used for positioning the terminal; and the network device receiving the sounding reference signal (SRS) sent by the terminal by means of the first resource, and positioning the terminal by means of the SRS. In the embodiments of the present application, by means of providing, for a terminal, a first resource pool based on a serving cell, the terminal selects a first resource from the first resource pool and sends an SRS to a network device, such that the network device positions the terminal by means of the SRS. The process simplifies a communication process in positioning technology, reduces the resource consumption during a positioning process, and thus reduces the positioning cost.

Description

Positioning signal transmission method and device

This application claims the priority of the Chinese patent application with the application number 202010681131.6 and the application name "Location Signal Sending Method and Device", which was submitted to the China Intellectual Property Office on July 15, 2020, the entire contents of which are incorporated into this application by reference .

technical field

The present application relates to the field of positioning technology, and in particular, to a method and apparatus for sending a positioning signal.

Background technique

The 3GPP NR standard standardized wireless positioning technology in R16, which is suitable for indoor and outdoor positioning scenarios. The standardized positioning technology covers six typical positioning technologies, uplink-time difference of arrival (UL-TDOA) positioning, downlink-time difference of arrival (DL-TDOA) positioning, uplink arrival Uplink angle of arrival (UL-AoA) positioning, uplink angle of departure (DL-AoD) positioning, multi round-trip time (multi-RTT) positioning, and enhanced cell identification number (enhanced cell identification, E-CID) positioning. Among them, UL-TDOA positioning is widely realized in wireless products.

The environment for industrial factories, such as the positioning and tracking of materials and valuable equipment, requires the terminal not only to have high positioning accuracy, but also to require low power consumption and low terminal implementation costs. In the prior art, since the acquisition of the positioning signal requires multiple communications and signaling transmissions, the terminal overhead is high and the positioning cost is high. Therefore, it is necessary to design a new positioning technology to simplify the communication process and signal transmission of the air interface.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method and apparatus for sending a positioning signal, so as to improve and simplify the communication process in the positioning technology, reduce resource consumption in the positioning process, and reduce positioning costs.

A first aspect provides a method for sending a positioning signal, the method includes: a terminal selects a first resource from a first resource pool, the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device through the first cell Communication; the terminal sends a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.

In the embodiment of the present application, the network device divides resource pools for different serving cells. After the terminal establishes a communication connection with the network device through the serving cell, it selects resources from the resource pool for sending uplink SRS. This process omits that the network device is the terminal The process of allocating specific resources simplifies the communication process and improves communication efficiency. At the same time, the terminal may not have the ability to perform complex communication with the network device, which can reduce the communication cost of the terminal.

In a possible implementation manner, the method further includes: the terminal obtains a second resource from a second resource pool according to the first resource, where the second resource is used to send identification information of the terminal, and the identification information of the terminal is used for the network The device determines the terminal sending the SRS.

In this embodiment of the present application, the terminal acquires the second resource corresponding to the first resource from the second resource pool according to the first resource, so that the terminal sends its own identification information while sending the uplink SRS, so that the network device can The identification information determines the identity of the terminal corresponding to the received SRS, and then locates the terminal according to the SRS. This process enables the terminal to quickly determine the terminal device and locate the terminal without other prior communication with the network device to obtain the terminal identity in advance, which further improves the positioning efficiency and reduces the communication cost of the positioning process.

In a possible implementation manner, there is a one-to-one correspondence between the first resource and the second resource; or a one-to-many correspondence between the first resource and the second resource.

In a possible implementation manner, the corresponding relationship is a corresponding relationship in quantity and/or a corresponding relationship in position.

In a possible implementation manner, the method further includes: the terminal receives a first system message, and determines the first resource pool according to the first system message; and/or the terminal receives a second system message, and determines according to the second system message The second resource pool.

In a possible implementation manner, the first system message and/or the second system message is obtained by the terminal by demodulation from the synchronization signal used for positioning-the broadcast channel resource block SSBP.

In a possible implementation manner, the SRS is generated based on the cell identity.

In a possible implementation manner, the first resource is indicated by one or more of the following information: the number of OFDM symbols occupied by the first resource, a start symbol, a frequency offset, and a frequency interval; The second resource is indicated by one or more pieces of the following information: the number of OFDM symbols occupied by the second resource, a start symbol, a frequency offset, and a frequency interval.

In a possible implementation manner, the first resource and the second resource are located in the same radio frame.

In a possible implementation manner, the method further includes: after the terminal sends the SRS to the network device, switching from the active state to the inactive state or the idle state.

In a possible implementation manner, the SRS is used for one or more of the following positioning procedures: uplink time difference of arrival positioning UL-TDOA, uplink angle of arrival positioning UL-AoA, multi-round trip time positioning multi-RTT, enhanced cell identification number Locate the E-CID.

In a second aspect, a method for sending a positioning signal is provided, the method comprising: a network device receiving a sounding reference signal SRS sent by a terminal through a first resource in a first resource pool, where the first resource pool is a resource corresponding to a first cell pool, the terminal communicates with the network device through the first cell; the network device locates the terminal through the SRS.

In a possible implementation manner, the network device is further configured to receive identification information of the terminal sent by the terminal through the second resource in the second resource pool, where the identification information of the terminal is used to determine the terminal that sends the SRS.

In a possible implementation manner, when there is a one-to-many correspondence between the first resource and the second resource, the method further includes: receiving the SRS and the identifiers of multiple terminals corresponding to the SRS at the network device In the case of information, it is determined that the SRS transmission is unsuccessful.

In a possible implementation manner, the method further includes: the network device sends a first system message, where the first system message is used by the terminal to determine the first resource pool; and/or the network device sends a second system message, the second system message The system message is used by the terminal to determine the second resource pool.

In a possible implementation manner, the network device sends the first system message and/or the second system message through a synchronization signal used for positioning-broadcast channel resource block SSBP.

The above implementation process can enable the network device to quickly solve the problem that the SRS signal sent by the terminal cannot accurately correspond to the terminal identification information, without any other judgment mechanism, and the terminal does not need to perform redundant communication with the network device, reducing communication overhead and positioning costs. .

In a third aspect, a communication device is provided, applied to a terminal, the device includes a processing module and a sending module, wherein,

a processing module, configured to select a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

A sending module, configured to send a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.

In a possible implementation manner, the processing module is further configured to: obtain a second resource from the second resource pool according to the first resource, where the second resource is used to send identification information of the terminal, and the identification information of the terminal is used for the network The device determines the terminal sending the SRS.

In a possible implementation manner, the apparatus further includes a receiving module for receiving the first system message; the processing module for determining the first resource pool according to the first system message; and/or the receiving module for receiving the first system message Second system message, the processing module is configured to determine the second resource pool according to the second system message.

In a possible implementation manner, the processing module is further configured to switch the terminal from an active state to an inactive state or an idle state after the sending module sends the SRS to the network device.

In a fourth aspect, a communication apparatus is provided, applied to network equipment, the apparatus includes a receiving module and a processing module, wherein,

a receiving module, configured to receive a sounding reference signal SRS sent by the terminal through a first resource in a first resource pool, where the first resource pool is a resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

The processing module is used for locating the terminal through the SRS.

In a possible implementation manner, the receiving module is further configured to receive identification information of the terminal sent by the terminal through the second resource in the second resource pool, where the identification information of the terminal is used to determine the terminal sending the SRS.

In a possible implementation manner, when there is a one-to-many correspondence between the first resource and the second resource, the module is configured to: receive the SRS and the identifiers of multiple terminals corresponding to the SRS at the network device In the case of information, it is determined that the SRS transmission is unsuccessful.

In a possible implementation manner, the apparatus further includes a sending module, configured to: send a first system message, where the first system message is used by the terminal to determine the first resource pool; and/or send a second system message, where the first system message is used by the terminal to determine the first resource pool; The second system message is used by the terminal to determine the second resource pool.

In a possible implementation manner, the sending module sends the first system message and/or the second system message through a synchronization signal for positioning-broadcast channel resource block SSBP.

In a fifth aspect, an embodiment of the present application provides an apparatus, where the apparatus includes a communication interface and a processor, where the communication interface is used for the apparatus to communicate with other devices, such as sending and receiving data or signals. Illustratively, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and other devices may be network devices. The processor is configured to invoke a set of programs, instructions or data to execute the method described in the first aspect. The apparatus may also include a memory for storing programs, instructions or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the first aspect above can be implemented.

Exemplarily, the processor is configured to select a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

The communication interface is configured to send the sounding reference signal SRS to the network device through the first resource.

In a sixth aspect, an embodiment of the present application provides an apparatus, where the apparatus includes a communication interface and a processor, where the communication interface is used for the apparatus to communicate with other devices, such as sending and receiving data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and other devices may be terminals. The processor is configured to invoke a set of programs, instructions or data to execute the method described in the second aspect above. The apparatus may also include a memory for storing programs, instructions or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, the method described in the second aspect above can be implemented.

Exemplarily, the communication interface is used to receive the sounding reference signal SRS sent by the terminal through the first resource, the first resource pool is the resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

The processor is used for locating the terminal through the SRS.

In a seventh aspect, an embodiment of the present application also provides a communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and a computer-executable instruction stored in the memory and executable on the processor, The computer-executable instructions, when executed, cause the communication apparatus to perform a method as in the first aspect or any of the possible implementations of the first aspect.

In an eighth aspect, an embodiment of the present application further provides a communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and a computer-executable instruction stored in the memory and executable on the processor, The computer-executable instructions, when executed, cause the communication apparatus to perform a method as in the second aspect or any of the possible implementations of the second aspect.

In a ninth aspect, the embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer storage medium, and when the computer-readable instructions are run on a computer, the computer is made to execute the first aspect. or the method in any possible implementation manner of the first aspect.

In a tenth aspect, the embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the second aspect or any one of the possible implementations of the second aspect. Methods.

In an eleventh aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may also include a memory, for implementing the method in the first aspect or any possible implementation manner of the first aspect . The chip system can be composed of chips, and can also include chips and other discrete devices.

Optionally, the chip system further includes a transceiver.

a processor, configured to select a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

The transceiver is configured to send a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.

In a twelfth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, for implementing the method in the second aspect or any possible implementation manner of the second aspect . The chip system can be composed of chips, and can also include chips and other discrete devices.

Optionally, the chip system further includes a transceiver.

Exemplarily, the transceiver is configured to receive a sounding reference signal SRS sent by the terminal through a first resource, the first resource pool is a resource pool corresponding to the first cell, and the terminal communicates with the network device through the first cell;

The processor is used for locating the terminal through the SRS.

In a thirteenth aspect, the embodiments of the present application further provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the first aspect or any one of the possible implementations of the first aspect. method, or perform a method as in the second aspect or any of the possible implementations of the second aspect.

In a fourteenth aspect, an embodiment of the present application provides a system, where the system includes the apparatus provided in the third aspect or the fifth aspect, and the apparatus provided in the fourth aspect or the sixth aspect.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below.

FIG. 1A is a schematic structural diagram of a positioning system according to an embodiment of the present application;

1B is a schematic diagram of the architecture of a positioning system in a 5G mobile communication system;

1C is a schematic diagram of the architecture of another positioning system in a 5G mobile communication system;

FIG. 1D shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

2A is a flowchart of a method for sending a positioning signal provided by an embodiment of the present application;

FIG. 2B is a schematic diagram of an uplink positioning process according to an embodiment of the present application;

2C is a schematic diagram of SRS resource allocation according to an embodiment of the present application;

FIG. 2D is a schematic diagram of another uplink positioning process provided by an embodiment of the present application;

FIG. 2E is a schematic diagram of a first resource provided by an embodiment of the present application;

FIG. 2F is a schematic diagram of a first resource distribution provided by an embodiment of the present application;

FIG. 2G is a schematic diagram of another first resource distribution situation provided by an embodiment of the present application;

FIG. 3A is a flowchart of another positioning signal sending method provided by an embodiment of the present application;

FIG. 3B is a schematic diagram of a corresponding relationship between a first resource and a second resource according to an embodiment of the present application;

FIG. 3C is another schematic diagram of the correspondence between the first resource and the second resource provided by an embodiment of the present application;

FIG. 3D is another schematic diagram of the correspondence between the first resource and the second resource provided by the embodiment of the present application;

FIG. 3E is a schematic diagram of a conflict process provided by an embodiment of the present application;

FIG. 4 is a communication device provided by an embodiment of the present application;

FIG. 5 is another communication device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.

detailed description

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

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, 5th generation (5G) system Or a new radio (NR), or a next-generation communication system, such as 6G, etc. The 5G mobile communication system involved in this application includes a non-standalone (NSA) 5G mobile communication system or an independent network (standalone, SA) 5G mobile communication system. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, Internet of Things (IoT), Internet of Vehicles communication system or other communication systems.

FIG. 1A is a schematic structural diagram of a positioning system according to an embodiment of the present application. As shown in FIG. 1A , the positioning system includes a terminal, one or more network devices (one network device is used as an example for illustration in FIG. 1A ), and a positioning device. The terminal, the network device, or the positioning device may communicate directly or communicate through the forwarding of other devices, which is not specifically limited in this embodiment of the present application. Although not shown, the positioning system may also include other network elements such as a mobility management network element, which is not specifically limited in this embodiment of the present application.

Optionally, the positioning device in the embodiment of the present application may be a location management function (location management function, LMF) network element or a location management component (location management component, LMC) network element, or may be a local location located in the network device. Management function (local location management function, LLMF) network element.

Optionally, the positioning system provided in this embodiment of the present application may be applicable to the foregoing various communication systems. Taking a 5G mobile communication system as an example, the network element or entity corresponding to the network device in FIG. 1A may be a next-generation radio access network (NG-RAN) device in the 5G mobile communication system. The network element or entity corresponding to the above-mentioned mobility management network element may be an access and mobility management function (AMF) network element in the 5G mobile communication system, which is not specifically limited in the embodiments of the present application .

Exemplarily, FIG. 1B is a schematic diagram of the architecture of a positioning system in a 5G mobile communication system. As shown in Fig. 1B, in this positioning system, the terminal passes through the next-generation evolved NodeB (ng-eNB) through LTE-Uu, or passes through the next-generation NodeB (next-generation NodeB) through the NR-Uu interface. node B, gNB) is connected to the radio access network; the radio access network is connected to the core network through the AMF network element through the NG-C interface. Wherein, the NG-RAN includes one or more ng-eNBs (one ng-eNB is used as an example for illustration in FIG. 1B ); the NG-RAN may also include one or more gNBs (one gNB is used as an example for illustration in FIG. 1B ); The NG-RAN may also include one or more ng-eNBs and one or more gNBs. The ng-eNB is the LTE base station that accesses the 5G core network, and the gNB is the 5G base station that accesses the 5G core network. The core network includes AMF network elements and LMF network elements. Among them, the AMF network element is used to implement functions such as access management, and the LMF network element is used to implement functions such as positioning or positioning assistance. The AMF network element and the LMF network element are connected through the NLs interface.

Exemplarily, FIG. 1C is a schematic structural diagram of another positioning system in a 5G mobile communication system. The difference between the positioning system architecture of FIG. 1C and FIG. 1B is that the device or component of the positioning management function in FIG. 1B (such as the LMF network element) is deployed in the core network, and the device or component of the positioning management function of FIG. 1C (such as the LMC network element) is deployed in the core network. ) can be deployed in NG-RAN equipment. As shown in Figure 1C, the gNB includes LMC network elements. The LMC network element is a part of the functional components of the LMF network element, which can be integrated in the gNB of the NG-RAN equipment.

It should be understood that the devices or functional nodes included in the positioning system of FIG. 1B or FIG. 1C are only exemplary descriptions, and do not limit the embodiments of the present application. In fact, the positioning system of FIG. 1B or FIG. 1C may also include other The network elements or devices or functional nodes that have an interactive relationship with the devices or functional nodes shown in the figure are not specifically limited here.

Optionally, the terminal in this embodiment of the present application may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal (user terminal), a user equipment ( user equipment, UE), terminal (terminal), wireless communication equipment, user agent, user equipment, cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) Stations, personal digital assistants (DAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks or future evolved The terminal in the PLMN or the terminal in the future Internet of Vehicles, etc., is not limited in this embodiment of the present application.

As an example but not a limitation, in the embodiments of the present application, the terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality terminal, an augmented reality terminal, a wireless terminal in industrial control, and a wireless terminal in unmanned driving. , wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

As an example and not a limitation, in the embodiments of this application, a wearable device may also be referred to as a wearable smart device, which is a general term for intelligently designing daily wearable devices and developing wearable devices using wearable technology, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal may also be a terminal in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is to connect items through communication technology and network connection, so as to realize the intelligent network of human-machine interconnection and the interconnection of things. In the embodiments of the present application, the IOT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, a narrow band (NB) technology.

In addition, in the embodiment of the present application, the terminal may also include sensors such as smart printers, train detectors, and gas stations, and the main functions include collecting data (part of the terminal), receiving control information and downlink data of network equipment, and sending electromagnetic waves to Network equipment transmits uplink data.

Optionally, the network device in this embodiment of the present application may be any communication device with a wireless transceiver function that is used to communicate with a terminal. The network equipment includes but is not limited to: evolved node B (evolved node B, eNB), baseband unit (baseband unit, BBU), access point (access point, AP) in a wireless fidelity (wireless fidelity, WIFI) system , wireless relay node, wireless backhaul node, transmission point (TP) or transmission reception point (TRP), etc. The network device may also be a gNB or TRP or TP in a 5G system, or one or a group (including multiple antenna panels) antenna panels of a base station in a 5G system. In addition, the network device may also be a network node constituting a gNB or TP, such as a BBU, or a distributed unit (distributed unit, DU).

In some deployments, a gNB may include a centralized unit (CU) and a DU. In addition, the gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical layer (PHY). AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, therefore, in this architecture, the higher-layer signaling, such as the RRC layer signaling, can also be considered to be sent by the DU. , or, sent by DU+AAU. It can be understood that the network device may be a device including one or more of a CU node, a DU node, and an AAU node.

Optionally, the network device and the terminal in this embodiment of the present application may communicate through licensed spectrum, may also communicate through unlicensed spectrum, or may communicate through licensed spectrum and unlicensed spectrum at the same time. The network device and the terminal can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal 101 .

Optionally, the terminal, network device, or positioning device in this embodiment of the present application can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water; it can also be deployed in airborne aircraft, balloons, and artificial on the satellite. The embodiments of the present application do not limit the application scenarios of the terminal, the network device, or the positioning device.

Optionally, in this embodiment of the present application, the terminal or the network device or the positioning device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application. For example, the execution subject of the method provided by the embodiment of the present application may be a terminal, a network device, or a positioning device, or a functional module in a terminal, a network device, or a positioning device that can call a program and execute the program.

In other words, the relevant functions of the terminal, network device, or positioning device in the embodiments of the present application may be implemented by one device, may be implemented jointly by multiple devices, or may be implemented by one or more functional modules in one device. This is not specifically limited in the application examples. It is to be understood that the above-mentioned functions can be either network elements in hardware devices, or software functions running on dedicated hardware, or a combination of hardware and software, or instantiated on a platform (eg, a cloud platform). Virtualization capabilities.

For example, the related functions of the terminal, the network device, or the positioning device in the embodiment of the present application may be implemented by the communication apparatus 100 in FIG. 1D . FIG. 1D is a schematic structural diagram of a communication apparatus 100 provided by an embodiment of the present application. The communication device 100 includes one or more processors 101, a communication line 102, and at least one communication interface (in FIG. 1D, it is only an example to include a communication interface 104 and a processor 101 for illustration), optional The memory 103 may also be included.

The processor 101 may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application. circuit.

The communication line 102 may include a path for connecting the various components.

The communication interface 104 can be a transceiver module for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (wireless local area networks, WLAN) and the like. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 104 may also be a transceiver circuit located in the processor 101 to implement signal input and signal output of the processor.

The memory 103 may be a device having a storage function. For example, it may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of storage devices that can store information and instructions Dynamic storage device, it can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer any other medium taken, but not limited to this. The memory may exist independently and be connected to the processor through the communication line 102 . The memory can also be integrated with the processor.

The memory 103 is used for storing computer-executed instructions for executing the solutions of the present application, and the execution is controlled by the processor 101 . The processor 101 is configured to execute the computer-executed instructions stored in the memory 103, thereby implementing the positioning method provided in the embodiments of the present application.

Alternatively, in this embodiment of the present application, the processor 101 may also perform processing-related functions in the positioning method provided by the following embodiments of the present application, and the communication interface 104 is responsible for communicating with other devices or communication networks, and the embodiment of the present application is responsible for this There is no specific limitation.

The computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 101 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 1D .

In a specific implementation, as an embodiment, the communication apparatus 100 may include multiple processors, such as multiple processors 101 in FIG. 1D . Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a specific implementation, as an embodiment, the communication apparatus 100 may further include an output device 105 and an input device 106 . The output device 105 is in communication with the processor 101 and can display information in a variety of ways.

The above-mentioned communication device 100 may be a general-purpose device or a dedicated device. For example, the communication device 100 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal, an embedded device, or a device with a similar structure in FIG. 1D . This embodiment of the present application does not limit the type of the communication apparatus 100 .

The terminal positioning method provided by the embodiment of the present application will be described in detail below with reference to FIG. 1A to FIG. 1D .

Please refer to FIG. 2A. FIG. 2A is a flowchart of a method for transmitting a positioning signal provided by an embodiment of the present application. As shown in FIG. 2A, the method includes the following steps:

201. A terminal selects a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device through the first cell;

202. The terminal sends a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal;

203. The network device receives the sounding reference signal SRS sent by the terminal through the first resource, and locates the terminal through the SRS.

Uplink sounding reference signal (SRS) is used for uplink positioning and uplink and downlink positioning, such as uplink-time difference of arrival (UTDOA) positioning in LTE, or UL-TDOA positioning in NR, UL- AOA positioning, Multi-RTT positioning, etc. The basic principle is that the base station allocates a semi-static SRS resource pool for each cell. After the terminal accesses the cell, the base station schedules and configures special radio resources for the terminal to transmit uplink SRS. Specifically, taking the UTDOA positioning process as an example, first The terminal obtains the configuration information of the SRS resources corresponding to the serving cell through SIB2, and the SRS resource pool allocated by each cell has the following characteristics:

It is semi-static, configured by the system message SIB2, and the configuration includes bandwidth, period, occupied uplink symbols, etc.;

The uplink data channel PUSCH of this cell will not occupy the resource element (resource element, RE) of the SRS resource pool.

After the positioning device initiates positioning, reference may be made to FIG. 2B for the positioning process. FIG. 2B is a schematic diagram of an uplink positioning process provided by an embodiment of the application. As shown in FIG. 2B , taking UL-TDOA as an example, a network device first allocates a serving cell The corresponding SRS resource pool. After the positioning device sends a New Radio Positioning Protocol Annex (NRPPa) positioning information request to the network device, the network device determines the UE-specific SRS resource, which belongs to a part of the SRS resource pool resource. Then, the network device sends radio resource control (radio resource control, RRC) configuration information to the terminal to generate SRS resources corresponding to the terminal. Finally, the serving cell activates the terminal equipment to send the SRS.

In this process, the base station allocates dedicated uplink SRS resources for each terminal, which can ensure that different terminals occupy different radio resources for sending SRS. Specifically, please refer to FIG. 2C, which is a schematic diagram of SRS resource allocation provided by an embodiment of the present application. As shown in FIG. 2C, the period corresponding to the SRS resource pool configured for the cell is 10 milliseconds (ms), and the SRS resource Occupies the last orthogonal frequency division multiplexing (OFDM) symbol of the third subframe. The SRS period of user 1 and user 2 is 20ms, user 1 occupies OFDM symbols with system frame numbers SFN=0, 2, 4, . . .; user 2 occupies OFDM symbols with SFN=1, 3, 5, . Alternatively, the SRS resources of user 1 and user 2 may respectively occupy the same time slot symbol corresponding to different frequency domains.

According to the above positioning process, when the terminal device sends the SRS for positioning, the physical layer needs to transmit related messages on the uplink and downlink data channels. Therefore, the terminal needs to have 5G uplink and downlink communication functions, such as all physical layer channels in the uplink and downlink, support the initial access process, and support the sending of messages in the RRC connection state, resulting in high terminal cost and power consumption.

In order to solve this problem, in the method for sending a positioning signal provided by the embodiment of the present application, a network device allocates a first resource pool to a terminal, and then the terminal selects a first resource from the first resources for sending SRS. For details, please refer to FIG. 2D , FIG. 2D is a schematic diagram of another uplink positioning process provided by an embodiment of the present application. As shown in FIG. 2D , taking UL-TDOA as an example, what the terminal acquires is the first resource pool, and the first resource pool includes the first resource pool. All the first resources corresponding to the cell that can be used for sending the SRS, where the first cell is the serving cell where the terminal communicates with the network device. The terminal only needs to select a first resource from the first resource pool for sending the SRS. Compared with the hard uplink positioning process in FIG. 2B, the network device does not need to determine the SRS resource of the specific terminal device in step 2, so it does not need to In step 2a, downlink communication is performed with the terminal and the SRS resource configuration is sent to the terminal, which reduces communication dependence on PDCCH or PDSCH, reduces resource consumption in the positioning process, and further reduces positioning cost.

The network device needs to send the information of the first resource pool to the terminal, so that the terminal determines the first resource pool and selects the first resource from the first resource pool. In a possible implementation manner, the terminal acquires first information, and determines the first resource pool according to the first information. Optionally, the first information may be carried in the first message, and the terminal determines the first resource pool according to the received first message. The type of the first message may be a system message, MAC signaling, RRC signaling, other higher layer or physical layer signaling, and the like. Optionally, the first message may be a newly added system message or an existing system message (referred to as the first system message), for example, in an existing master information block (master information block, MIB) message or a system message block. The first information is added to the (system information block, SIB) message. The first information may be time-frequency information of the first resource pool, or may also be time-frequency information of the third resource pool, and an index of part of the time-frequency information, according to which the first resource pool may be determined from the third resource pool , the third resource pool may be a resource pool of the first cell and all neighboring cells; or the first information may also be a resource pool that changes at different times or different periods, and the terminal determines the first resource pool according to the current time. After the terminal is turned on, when synchronizing with the network device, the network device will send the MIB and SIB to the terminal, and adding the information of the first resource pool to the MIB or SIB will not add additional communication processes or steps between the access network and the terminal. .

Optionally, the first system message sent by the network device to the first cell only includes information about the first resource pool corresponding to the first cell, and after receiving the first system message, the network device directly parses and obtains the first resource pool therein. information. Or, the first system message sent by the network device to the first cell includes first resource pool information of all serving cells capable of establishing wireless connections for the network device. After receiving the first system message, the terminal parses and obtains a plurality of first resource pools. For resource pool information, the first resource pool information corresponding to the first cell is obtained according to the currently accessed first cell match.

Optionally, the network device sends the first system message to the terminal according to the period T to update the information of the first resource pool. Because the first cell can provide communication services between multiple terminals and network devices, the available resources in the first resource pool corresponding to the first cell are also changing in real time. Therefore, the network device updates the terminals in the first resource pool according to the period T. The information can reduce the possibility that the first resource selected by the terminal from the first resource pool is occupied by other terminals, and improve the efficiency of the terminal sending SRS through the first resource.

Optionally, the network device may send the first system message by using a synchronization signal for positioning-a broadcast channel resource block (synchronization signal and PBCH block for positioning, SSBP). The resource block may be a resource block specially used for sending positioning information and does not overlap with other resource blocks, and the resource block may be sent when the terminal accesses the network device. Optionally, the existing synchronization signal-broadcast channel resource block (synchronization signal and PBCH block, SSB) is used to send the first system message, but the information in the first system message is changed. Taking the first system message as the MIB as an example, when the spare bit in the SSB is set to 1 (positioning), in the vicinity of the SSB, the time-frequency resources relative to the SSB are fixed, and the MIB information for positioning, MIB information is sent. Can be:

Optionally, after acquiring the first resource pool, the terminal may first determine the correspondence between the first resource pool and the first cell. On the one hand, it can be determined according to the current communication situation. For example, when the terminal receives the first system message through the first cell, the first resource pool obtained by demodulation in the first system message can be defaulted to be the resource pool corresponding to the first cell. Alternatively, the correspondence between the first resource pool and the first cell may be indicated in the first system message, for example, the first system message may include one or more resource pools and cell identifiers (cell-IDs) corresponding to these resource pools.

After receiving the first system message, the terminal obtains the first resource pool by demodulation therefrom. The first resource pool may be indicated by information such as a period, a time slot, the number of OFDM symbols, a start symbol or an end symbol, and a bandwidth. Please refer to FIG. 2E. FIG. 2E is a schematic diagram of a first resource provided by an embodiment of the present application. As shown in FIG. 2E, it is assumed that the subcarrier spacing (SCS) is 30 kHz, the length of a time slot is 0.5 ms, and each time slot is 0.5 ms. The radio frame includes 20 time slots, and the first resource pool occupies the 8th time slot, which is a physical resource block (physical resource blocks, PRB). SSBP occupies the middle 20 PRBs (4 symbols) of slot 1.

For the distribution of the first resources in the first resource pool, reference may be made to FIG. 2F . FIG. 2F is a schematic diagram of the distribution of first resources provided by an embodiment of the present application. As shown in FIG. 2F , two symbols are occupied for each first resource. , the frequency interval is a configuration of 4 subcarriers, and the filling part in the figure is a first resource. Because a time slot has a total of 14 OFDM symbols, and every 2 symbols corresponds to 4 different first resource arrangement methods, a time slot corresponds to 28 different first resources at most.

Optionally, the first resource in the first resource pool may be configured by a network device, and after receiving the first resource pool, the terminal may obtain the configuration of multiple first resources in the first resource pool at the same time, for example, in FIG. 2E , Each first resource occupies 2 symbols, and the frequency is separated by 4 subcarriers. Then, the terminal may select one first resource from the plurality of first resources, including selecting time-frequency information of the first resource or selecting the number of the first resource.

Optionally, the first resource pool received by the terminal does not include configuration information of the first resource pool, and after receiving the first resource pool, the terminal selects a first resource corresponding to time-frequency information from the first resource pool as required. Since different terminals have different communication conditions, resources corresponding to sending SRS are also different, so the size of the first resource selected by each terminal may also be different. Referring specifically to FIG. 2G, FIG. 2G is a schematic diagram of another first resource distribution situation provided by this embodiment of the application. As shown in FIG. 2G, the first resource selected by the first terminal occupies 2 symbols, and the frequency is separated by 4 subcarriers. The first resource selected by the second terminal occupies 4 symbols, and the frequency is separated by 4 subcarriers. In this case, the corresponding multiple first resources in the first resource pool are not of fixed size.

In addition, in the case where the resources in the first resource pool do not have a specific corresponding relationship with the terminal, the terminal may randomly select the first resource, for example, select one first resource from multiple first resources of the same size corresponding to the first resource pool . Or when the network device sends the system message, it carries the corresponding rules between the resources in the first resource pool and the terminal, and the terminal selects the first resource according to the corresponding rule; or when the terminal establishes a connection with the network device, the protocol stipulates that the terminal obtains the first resource. Rules for the first resource in the resource pool, the terminal obtains the first resource in the first resource pool according to the protocol.

After acquiring the first resource in the first resource pool, the terminal may generate an SRS and send it to the network device through the first resource. In the process of generating the SRS, because the first resource is a specific cell resource rather than a specific terminal resource, a cell-specific (Cell-specific) SRS signal may be generated based on the first resource. For example, common pseudo-random sequences such as m-sequence, M-sequence, and Gold sequence are generated based on the cell identifier, ZC sequences are selected from the pseudo-random sequence, placed on the corresponding first resource, and then time-domain signals are generated through OFDM changes.

Optionally, the cell identifier needs to be acquired before generating the cell-specific SRS signal, and the terminal may acquire the identifier information of the first cell according to the current communication situation, for example, determine that the current serving cell of the network device is the first cell, and acquire the corresponding cell identifier. Alternatively, the first system message sent by the network device includes information of the first resource pool and a cell identifier corresponding to the first resource pool, and the terminal acquires the identifier information of the first cell while acquiring the information of the first resource pool.

It can be seen that, in the embodiment of the present application, the network device divides resource pools for different serving cells, and after the terminal establishes a communication connection with the network device through the serving cell, resources are selected from the resource pool for sending uplink SRS, and the network device is omitted in this process. The process of allocating specific resources to the terminal simplifies the communication process and improves the communication efficiency. At the same time, the terminal may not have the ability to perform complex communication (transmitting PDCCH/PUCCH or PDSCH/PUSCH) with the network device, which can reduce the communication cost of the terminal.

In the above embodiment, the terminal sends the SRS to the network device through the first resource, but because the first resource is selected by the terminal, if the network device does not communicate with the terminal before the terminal sends the SRS, the network device may not be able to Knowing the identity of the terminal sending the SRS through the first resource, the subsequent positioning process for the network device cannot be performed according to the received SRS.

Please refer to Fig. 3A, Fig. 3A is a flowchart of another method for sending positioning signals provided by the embodiment of the application, and the method comprises the following steps:

301. A terminal selects a first resource from a first resource pool, and obtains a second resource from a second resource pool according to the first resource, where the first resource pool is a resource pool corresponding to a first cell, and the terminal uses all the resources. the first cell communicates with the network device;

302. The terminal sends a sounding reference signal SRS to the network device through the first resource, and sends the identification information of the terminal through the second resource;

303. The network device receives the sounding reference signal SRS sent by the terminal through the first resource, receives the identification information of the terminal sent by the terminal through the second resource, and uses the identification information of the terminal to determine to send the SRS terminal, and locate the terminal through the SRS.

According to the description in the above embodiment, the terminal can obtain the first resource in the first resource pool and use it to send the SRS. If the method for the terminal to select the first resource is configured by the network device, or by the protocol between the network device and the terminal If the first resource is randomly selected by the terminal, the network device cannot know the identity information of the terminal sending the SRS, and cannot perform the terminal positioning process.

In a possible implementation manner, the terminal acquires first information, and determines the first resource pool according to the first information; and/or the terminal acquires second information, and determines the first resource pool according to the second information The second resource pool. Optionally, the first information may be carried in the first message, and the terminal determines the first resource pool according to the received first message. The type of the first message may be a system message, MAC signaling, RRC signaling, other higher layer or physical layer signaling, and the like. Optionally, the first message may be a newly added system message or an existing system message (which may be referred to as a first system message), for example, the first information is added to an existing MIB message. Similarly, the second information may be carried in the second message, and the terminal determines the second resource pool according to the received second message. The type of the second message may be a system message, MAC signaling, RRC signaling, other higher layer or physical layer signaling, and the like. Optionally, the second message is a newly added system message or an existing system message (which may be referred to as a second system message), for example, the second information is added to an existing SIB2 message. This application does not limit the type of the message. In another possible implementation manner, the first information and the second information may be carried in the same message, for example, both the first information and the second information are carried in a first system message, and the first system message may be a newly added system The message or an existing system message, for example, the first system message is an MIB message.

In this case, while the terminal sends the uplink SRS through the first resource, it sends its own identification information through the second resource, so that the network device can determine the identity of the terminal corresponding to the received SRS according to the identification information, and then use the SRS to determine the identity of the terminal according to the SRS. Terminal positioning. This process enables the terminal to quickly determine the terminal device and locate the terminal without other prior communication with the network device to obtain the terminal identity in advance, which further improves the positioning efficiency and reduces the communication cost of the positioning process.

The second resource pool may be configured by the network device, or may be obtained by the terminal from an existing resource pool. In the case where the second resource pool is configured by the network device, when the access network configures the first resource pool, the second resource pool may be configured synchronously. The network device may send the information of the second resource pool to the terminal, so that the terminal selects the second resource from the second resource pool after determining the first resource. Optionally, after the terminal establishes a connection with the network device through the first cell, the network device sends a second system message to the terminal, including the second system message sent through the MIB or the system message block SIB, and the second system message includes: second information. The second information may be the time-frequency information of the second resource pool, or may also be the time-frequency information of the fourth resource pool and an index of part of the time-frequency information, where the fourth resource pool is the resource pool of the first cell and all neighboring cells, The second resource pool can be determined from the fourth resource pool according to the index; or the second information can also be used to indicate resource pools that change at different times or different periods, and the terminal determines the second resource pool according to the current time. After the terminal is turned on, when synchronizing with the network device, the network device will send the MIB and SIB to the terminal, and adding the information of the first resource pool to the MIB or SIB will not add additional communication processes or steps between the access network and the terminal. .

Optionally, the network device may send the second system message through SSBP. The resource block may be a resource block specially used for sending positioning information and does not overlap with other resource blocks, and the resource block may be sent when the terminal accesses the network device.

The first system message used to send the information of the first resource pool and the second system message used to send the information of the second resource pool may be the same system message or different system messages. When the second system message is a different system message, the sending sequence thereof is not limited in this embodiment of the present application.

According to the content sent by the second resource above, the second resource can be named as a physical uplink positioning channel (physical uplink positioning channel, PUPCH). The second resource pool includes multiple resources, and these resources can also be indicated by information such as a period, a time slot, the number of OFDM symbols, a start symbol or an end symbol, and a bandwidth. Each resource in the second resource pool may correspond to a fixed size, such as a physical resource block (PRB); or each resource in the second resource pool may correspond to a non-fixed size, that is, different resources correspond to occupied The OFDM symbols and the number of frequency domain subcarriers can be different. In addition, because the first resource is used to send the SRS and the second resource is used to send the identification information of the terminal corresponding to the SRS, there is a one-to-one correspondence between the first resource and the second resource; or the first resource and the second resource There is a one-to-many correspondence.

When there is a one-to-one correspondence between the first resource and the second resource, and the terminal sends the SRS through the first resource, the second resource corresponding to the first resource can be scheduled to send the identification information of the terminal. Referring to FIG. 3B , FIG. 3B is a schematic diagram of the correspondence between a first resource and a second resource provided by an embodiment of the present application. It is assumed that the first resource occupies 2 symbols, the frequency interval is 4 subcarriers, and the second resource occupies 1/2 PRB, there is a one-to-one correspondence between the first resource on the left in FIG. 3B and the second resource on the right in FIG. 3B .

When there is a one-to-many correspondence between the first resource and the second resource, and the terminal sends the SRS through the first resource, any one of the multiple second resources corresponding to the first resource can be scheduled to send the identifier of the terminal. information. Referring to FIG. 3C, FIG. 3C is another schematic diagram of the correspondence between the first resource and the second resource provided by the embodiment of the present application. It is assumed that the first resource occupies 2 symbols, the frequency is separated by 4 subcarriers, and the second resource occupies 1/2. There is a corresponding relationship between a first resource on the left in FIG. 3C and two second resources (a second resource a and a second resource b) on the right in FIG. 3C .

The correspondence between the first resource and the second resource includes a quantity correspondence and a position correspondence. Assuming that the first resource pool occupies the fourth time slot, each resource in the first resource pool occupies 2 symbols, the frequency is separated by 4 subcarriers, and there is a one-to-one quantitative relationship between the first resource and the second resource, please refer to the figure 3D, FIG. 3D is another schematic diagram of the correspondence between the first resource and the second resource provided by the embodiment of the present application, as shown in (a) in FIG. 3D, because the fourth time slot (in the first resource pool) may include 28 resources (each resource can be a first resource), correspondingly, the second resource pool includes 28 resources (each resource can be a second resource), and each second resource occupies 1/2 In the case of PRB, the second resource pool may occupy the 5th time slot to the 18th time slot. When there is a one-to-one positional correspondence between the first resource and the second resource, the first first resource on the fourth time slot may correspond to the first second resource on the fifth time slot.

When there is a one-to-many quantitative correspondence between the first resource and the second resource, as shown in (b) in FIG. 3D , it is assumed that one first resource corresponds to two second resources, because the fourth time slot (the first resource pool) ) can include 28 first resources, correspondingly, the second resource pool includes 56 second resources, and in the case that each second resource occupies 2 symbols, a time slot can include 7 second resources , the second resource pool occupies 8 time slots, corresponding to the 5th time slot to the 12th time slot in the figure. When there is a one-to-many positional correspondence between the first resource and the second resource, the first first resource on the fourth time slot can be associated with the first second resource and the second second resource on the fifth time slot. correspond.

Optionally, the first resource and the second resource are located in the same radio frame (Radio Frame). According to the above description, the second resource is the resource corresponding to the first resource. After the network device receives the first resource and obtains the SRS, it needs to obtain the identification information of the corresponding terminal. The first resource and the second resource are in the same wireless frame, the network device can more conveniently and accurately obtain the terminal identification information corresponding to the SRS, without erroneous correspondence. In addition, in the same frame, the efficiency of obtaining both can be guaranteed at the same time without extra waiting, which improves the positioning efficiency.

In addition, the size of the second resource may also be a non-fixed size, that is, different terminals may acquire second resources of different sizes correspondingly. For example, when the sizes of the first resources corresponding to different terminals are different, in order to make the second resources correspond to the first resources, the sizes of the second resources are positively correlated according to the sizes of the first resources.

In this embodiment of the present application, because the number of terminals communicating with the network device is large, the number of first resources is usually less than the number of terminals that can communicate with the network device. In this case, the terminals need to compete for the first resource, and the Configure multiple second resources for the first resource, that is, it may happen that the network device competes for the second resource but does not compete for the first resource. At this time, if the network device receives an SRS and the identifiers of multiple terminals corresponding to it information, it can judge the lack of network resources, and then make adjustments to the positioning process to improve the positioning quality in time.

Optionally, when the network device receives one SRS and the identification information of multiple terminals corresponding to it, the network device discards the SRS, and determines that the sending of the SRS is unsuccessful. Please refer to FIG. 3E for details. FIG. 3E is a schematic diagram of a conflict process provided by an embodiment of the present application. As shown in FIG. 3E , the network device receives the SRS1 corresponding to the first resource, and the

identification information

1 and 1 in the second resource A. For the identification information 2 in the second resource B, the network device cannot determine whether the SRS is sent by the terminal corresponding to the identification information 1 or the terminal corresponding to the identification information 2 according to the received information. Therefore, the network device can discard the SRS1 or not Process the SRS1 and determine that the SRS1 failed to transmit. The terminal may acquire the first resource and the second resource again after a certain period of time, and perform the next positioning process.

The above implementation process can enable the network device to quickly solve the problem that the SRS signal sent by the terminal cannot be accurately corresponding to the terminal identification information, without any other judgment mechanism, and the terminal does not need to perform redundant communication with the network device, reducing communication overhead and positioning costs. .

The correspondence between the first resource and the second resource may be preset by the network device when configuring the first resource pool and the second resource pool, or agreed by the network device through a protocol. For the latter case, if the first resource is a resource that the terminal randomly selects at a time-frequency location, the network device may agree on a rule for the terminal to acquire the second resource according to the communication sequence or communication time with the terminal.

Optionally, after completing the sending of the SRS, the terminal automatically switches from an active state (active) to an idle state (idle) or an inactive state (inactive), and the terminal stops sending the SRS to the network device, so that the network device and the positioning device are paired. During the positioning process of the terminal, the terminal no longer consumes redundant energy, thereby reducing the positioning cost.

FIG. 4 is a communication apparatus 400 provided by an embodiment of the present application, which can be used to execute the method and specific embodiments of the positioning signal transmission applied to a terminal in FIGS. 2A to 2G or 3A to 3E, and the terminal may be a terminal The device or the chip that can be configured in the terminal device. The communication device includes a processing module 402 and a sending module 403 .

The processing module 402 is configured to select a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device through the first cell;

The sending module 403 is configured to send a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.

Optionally, the processing module 402 is further configured to: obtain a second resource from a second resource pool according to the first resource, where the second resource is used to send the identification information of the terminal, the identification of the terminal The information is used by the network device to determine the terminal sending the SRS.

Optionally, the apparatus further includes a receiving module 401, configured to receive a first system message; the processing module is configured to determine the first resource pool according to the first system message; and/or the receiving module uses After receiving the second system message, the processing module is configured to determine the second resource pool according to the second system message.

Optionally, the processing module 402 is further configured to: after the sending module sends the SRS to the network device, switch the terminal from an active state to an inactive state or an idle state.

Optionally, the above-mentioned processing module 402 may be a chip, an encoder, an encoding circuit or other integrated circuits that can implement the method of the present application.

Optionally, the receiving module 401 and the sending module 403 may be interface circuits or transceivers. The receiving module 401 and the sending module 403 may be independent modules, or may be integrated into a transceiver module (not shown in the figure), and the transceiver module may implement the functions of the aforementioned receiving module 401 and the sending module 403 . Can be an interface circuit or a transceiver.

Since the specific methods and embodiments have been introduced above, the apparatus 400 is used to execute the positioning signal processing method corresponding to the terminal, so the specific description related to the method, especially the functions of the receiving module 401 and the processing module 402 can refer to The relevant parts of the corresponding embodiments are not repeated here.

Optionally, the apparatus 400 may further include a storage module (not shown in the figure), the storage module may be used for storing data and/or signaling, the storage module may be coupled with the processing module 402, and may also be coupled with the receiving module 401 or the sending module. Module 403 is coupled. For example, the processing module 402 may be configured to read data and/or signaling in the storage module, so that the key acquisition method in the foregoing method embodiments is executed.

FIG. 5 is another communication apparatus 500 provided by an embodiment of the present application, which can be used to execute the positioning signal sending method and specific embodiment applied to a network device in FIGS. 2A to 2G or 3A to 3E. It can be a positioning device or a chip that can be configured in the positioning device. In a possible implementation manner, as shown in FIG. 5 , the communication apparatus 500 includes a receiving module 502 and a processing module 503 .

The receiving module 502 is configured to receive a sounding reference signal SRS sent by the terminal through a first resource in a first resource pool, where the first resource pool is a resource pool corresponding to a first cell, and the terminal uses the first resource in the first resource pool. the first cell communicates with the network device;

The processing module 503 is configured to locate the terminal through the SRS.

Optionally, the receiving module 502 is further configured to receive the identification information of the terminal sent by the terminal through the second resource in the second resource pool, where the identification information of the terminal is used to determine the terminal sending the SRS .

Optionally, the apparatus further includes a sending module 501, configured to: send a first system message, where the first system message is used by the terminal to determine the first resource pool; and/or send a second system message, The second system message is used by the terminal to determine the second resource pool.

Optionally, there is a one-to-one correspondence between the first resource and the second resource; or a one-to-many correspondence between the first resource and the second resource.

Optionally, in the case that there is a one-to-many correspondence between the first resource and the second resource, the processing module 503 is configured to: when the network device receives the SRS and is associated with the SRS In the case of corresponding identification information of multiple terminals, it is determined that the SRS transmission is unsuccessful.

Optionally, the above-mentioned processing module 503 may be a chip, an encoder, an encoding circuit or other integrated circuits that can implement the method of the present application.

Optionally, the receiving module 502 and the sending module 501 may be interface circuits or transceivers. The receiving module 502 and the sending module 501 may be independent modules, or may be integrated into a transceiver module (not shown in the figure), and the transceiver module may implement the functions of the aforementioned receiving module 502 and the sending module 501 . Can be an interface circuit or a transceiver.

Since the specific methods and embodiments have been described above, the apparatus 500 is used to execute a positioning signal processing method corresponding to a positioning device, so the specific description of the method, especially the functions of the receiving module 502 and the sending module 501, can be Reference is made to the relevant parts of the corresponding embodiments, and details are not repeated here.

Optionally, the apparatus 500 may further include a storage module (not shown in the figure), the storage module may be used for storing data and/or signaling, the storage module may be coupled with the processing module 503, or may be coupled with the receiving module 502 or the sending Module 501 is coupled. For example, the processing module 503 may be configured to read data and/or signaling in the storage module, so that the key acquisition method in the foregoing method embodiments is executed.

As shown in FIG. 6 , FIG. 6 shows a schematic structural diagram of a communication apparatus in an embodiment of the present application. For the structure of the terminal or the positioning device, reference may be made to the structure shown in FIG. 6 . The communication device 900 includes: a processor 111 and a transceiver 112, the processor 111 and the transceiver 112 are electrically coupled;

The processor 111 is configured to execute part or all of the computer program instructions in the memory, and when the part or all of the computer program instructions are executed, the apparatus executes the method described in any of the foregoing embodiments.

The transceiver 112 is configured to communicate with other devices; for example, send a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.

Optionally, it also includes a memory 113 for storing computer program instructions. Optionally, the memory 113 (Memory#1) is located in the device, and the memory 113 (Memory#2) is integrated with the processor 111. together, or the memory 113 (Memory#3) is located outside the device.

It should be understood that the communication device 900 shown in FIG. 6 may be a chip or a circuit. For example, a chip or circuit may be provided in a terminal device or a communication device. The transceiver 112 described above may also be a communication interface. Transceivers include receivers and transmitters. Further, the communication device 900 may also include a bus system.

Among them, the processor 111, the memory 113, and the transceiver 112 are connected through a bus system, and the processor 111 is used to execute the instructions stored in the memory 113 to control the transceiver to receive and send signals, and complete the first implementation method involved in this application. device or step of the second device. The memory 113 may be integrated in the processor 111 , or may be provided separately from the processor 111 .

As an implementation manner, the function of the transceiver 112 can be considered to be implemented by a transceiver circuit or a dedicated transceiver chip. The processor 111 can be considered to be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip. The processor can be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP. The processor may further include hardware chips or other general purpose processors. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general-purpose array logic (generic array logic, GAL) and other programmable logic devices. , discrete gate or transistor logic devices, discrete hardware components, etc., or any combination thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

An embodiment of the present application provides a computer storage medium storing a computer program, where the computer program includes a method for executing the method corresponding to the terminal in the foregoing embodiment.

An embodiment of the present application provides a computer storage medium storing a computer program, where the computer program includes a method for executing the method corresponding to the network device in the foregoing embodiment.

The embodiments of the present application provide a computer program product including instructions, which, when run on a computer, cause the computer to execute the method corresponding to the terminal in the foregoing embodiments.

The embodiments of the present application provide a computer program product containing instructions, which, when run on a computer, cause the computer to execute the method corresponding to the network device in the foregoing embodiments.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for sending positioning signals, characterized in that the method comprises:

The terminal selects a first resource from a first resource pool, where the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device through the first cell;

The terminal sends a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.
The method according to claim 1, wherein the method further comprises:

The terminal acquires a second resource from a second resource pool according to the first resource, where the second resource is used to send the identification information of the terminal, and the identification information of the terminal is used by the network device to determine the information to send. The terminal of the SRS described above.
The method according to claim 2, wherein there is a one-to-one correspondence between the first resource and the second resource; or a one-to-many correspondence between the first resource and the second resource relation.
The method according to claim 3, wherein the corresponding relationship is a quantitative corresponding relationship and/or a positional corresponding relationship.
The method according to any one of claims 1-4, wherein the method further comprises:

The terminal receives a first system message, and determines the first resource pool according to the first system message; and/or

The terminal receives the second system message, and determines the second resource pool according to the second system message.
The method according to claim 5, wherein the first system message and/or the second system message is obtained by demodulation by the terminal from a synchronization signal for positioning - broadcast channel resource block SSBP.
The method according to claim 5 or 6, wherein the first system message and the second system message are the same system message.
The method according to any one of claims 1-7, wherein the SRS is generated based on a cell identity.
The method according to any one of claims 2-8, wherein the first resource is indicated by one or more of the following information: the number of OFDM symbols occupied by the first resource , start symbol, frequency offset, frequency interval; the second resource is indicated by one or more of the following information: the number of OFDM symbols occupied by the second resource, the start symbol, frequency Offset, frequency spacing.
The method according to any one of claims 2-9, wherein the first resource and the second resource are located in the same radio frame.
The method according to any one of claims 1-10, wherein the method further comprises:

After sending the SRS to the network device, the terminal switches from an active state to an inactive state or an idle state.
The method according to any one of claims 1-11, wherein the SRS is used for one or more of the following positioning procedures: uplink time difference of arrival positioning UL-TDOA, uplink angle of arrival positioning UL-AoA, multi-loop positioning Multi-RTT for long-distance time positioning and E-CID for enhanced cell identification number positioning.
A method for sending positioning signals, characterized in that the method comprises:

The network device receives a sounding reference signal SRS sent by the terminal through a first resource in a first resource pool, where the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with the network device through the first cell;

The network device locates the terminal through the SRS.
The method according to claim 13, wherein the network device is further configured to receive the identification information of the terminal sent by the terminal through the second resource in the second resource pool, and the identification information of the terminal is used for determining the terminal sending the SRS.
The method according to claim 14, wherein there is a one-to-one correspondence between the first resource and the second resource; or a one-to-many correspondence between the first resource and the second resource relation.
The method according to claim 15, wherein the corresponding relationship is a quantitative corresponding relationship and/or a positional corresponding relationship.
The method according to claim 15 or 16, wherein, in the case that there is a one-to-many correspondence between the first resource and the second resource, the method further comprises:

In the case that the network device receives the SRS and the identification information of multiple terminals corresponding to the SRS, it is determined that the SRS transmission is unsuccessful.
The method according to any one of claims 14-17, wherein the method further comprises:

sending, by the network device, a first system message, where the first system message is used by the terminal to determine the first resource pool; and/or

The network device sends a second system message, where the second system message is used by the terminal to determine the second resource pool.
The method according to claim 18, wherein the network device sends the first system message and/or the second system message through a synchronization signal for positioning-broadcast channel resource block SSBP.
The method according to any one of claims 14-19, wherein the first resource is indicated by one or more of the following information: the number of OFDM symbols occupied by the first resource , start symbol, frequency offset, frequency interval; the second resource is indicated by one or more of the following information: the number of OFDM symbols occupied by the second resource, the start symbol, frequency Offset, frequency spacing.
The method according to any one of claims 14-20, wherein the first resource and the second resource are located in the same radio frame.
The method according to any one of claims 13-21, wherein the SRS is used for one or more of the following positioning procedures: uplink time difference of arrival positioning UL-TDOA, uplink angle of arrival positioning UL-AoA, multi-loop positioning Multi-RTT for long-distance time positioning and E-CID for enhanced cell identification number positioning.
A communication device, characterized in that, when applied to a terminal, the device includes a processing module and a sending module, wherein the processing module is configured to select a first resource from a first resource pool, and the first resource pool is a first resource pool. A resource pool corresponding to a cell, and the terminal communicates with a network device through the first cell;

The sending module is configured to send a sounding reference signal SRS to the network device through the first resource, where the SRS is used to locate the terminal.
The apparatus according to claim 23, wherein the processing module is further configured to:

Acquire a second resource from a second resource pool according to the first resource, where the second resource is used to send the identification information of the terminal, and the identification information of the terminal is used by the network device to determine the information to send the SRS. terminal.
The apparatus according to claim 23 or 24, wherein the apparatus further comprises a receiving module configured to receive a first system message; the processing module is configured to determine the first resource according to the first system message pool; and/or

The receiving module is configured to receive a second system message, and the processing module is configured to determine the second resource pool according to the second system message.
The device according to any one of claims 23-25, wherein the processing module is further configured to:

After the sending module sends the SRS to the network device, the terminal is switched from an active state to an inactive state or an idle state.
A communication device, characterized in that, applied to network equipment, the device includes a receiving module and a processing module, wherein the receiving module is configured to receive a probe sent by the terminal through a first resource in a first resource pool a reference signal SRS, the first resource pool is a resource pool corresponding to a first cell, and the terminal communicates with a network device through the first cell;

The processing module is configured to locate the terminal through the SRS.
The device according to claim 27, wherein the receiving module is further configured to receive the identification information of the terminal sent by the terminal through the second resource in the second resource pool, and the identification information of the terminal is used for determining the terminal sending the SRS.
The device according to claim 27 or 28, characterized in that, the device further comprises a sending module for:

sending a first system message, where the first system message is used by the terminal to determine the first resource pool; and/or

Send a second system message, where the second system message is used by the terminal to determine the second resource pool.
The apparatus according to any one of claims 23-29, wherein there is a one-to-one correspondence between the first resource and the second resource; or the first resource and the second resource exist One-to-many correspondence.
The apparatus according to claim 30, wherein in the case that there is a one-to-many correspondence between the first resource and the second resource, the processing module is configured to:

In the case that the network device receives the SRS and the identification information of the multiple terminals corresponding to the SRS, it is determined that the SRS transmission is unsuccessful.
A communication device, characterized in that the communication device comprises a processor and an interface circuit, the interface circuit is used for receiving code instructions and transmitting them to the processor, and the processor is used for running the code instructions to execute the code instructions such as The method of any one of claims 1 to 12, or the code instructions are executed to perform the method of any one of claims 13 to 22.
A communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and computer-executable instructions stored on the memory and executable on the processor, when the computer-executable instructions are executed When the communication device is caused to execute the method according to any one of claims 1 to 12, or to execute the method according to any one of claims 13 to 22.
A computer-readable storage medium, wherein computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are executed on a communication device, the communication device is made to execute claims 1 to 12 The method according to any one of the claims, or causing the communication device to perform the method according to any one of claims 13 to 22.
A communication system, characterized by comprising the communication device according to any one of claims 23 to 26, and/or the communication device according to any one of claims 27 to 31.