WO2023123866A1 - 定位方法及相关设备 - Google Patents

定位方法及相关设备 Download PDF

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Publication number
WO2023123866A1
WO2023123866A1 PCT/CN2022/097146 CN2022097146W WO2023123866A1 WO 2023123866 A1 WO2023123866 A1 WO 2023123866A1 CN 2022097146 W CN2022097146 W CN 2022097146W WO 2023123866 A1 WO2023123866 A1 WO 2023123866A1
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WO
WIPO (PCT)
Prior art keywords
base station
reference signal
terminal device
sounding reference
channel sounding
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PCT/CN2022/097146
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English (en)
French (fr)
Inventor
张桢睿
Original Assignee
佰路威科技(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 佰路威科技(上海)有限公司 filed Critical 佰路威科技(上海)有限公司
Priority to US17/851,315 priority Critical patent/US11647477B1/en
Publication of WO2023123866A1 publication Critical patent/WO2023123866A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a positioning method and related equipment.
  • the positioning function of terminal equipment is becoming more and more indispensable in people's daily life.
  • the positioning effect that the user needs to achieve is to know the location information of some specific mobile devices.
  • the present disclosure proposes a positioning method, which can not only accurately position a mobile device, but also effectively reduce implementation costs.
  • the positioning method performed by the terminal device described in the embodiments of the present disclosure may include: accessing the base station through random access; acquiring channel sounding reference signal resources allocated by the base station; using the channel sounding reference signal resources according to a predetermined first period
  • the signal resource sends a channel sounding reference signal to the base station, so that the base station determines the arrival time of the channel sounding reference signal and uses it to determine the position of the terminal device.
  • the present disclosure also provides a positioning method performed by a base station, including: accessing a terminal device accessed through random access; allocating channel sounding reference signal resources to the terminal device, and receiving the The terminal device sends the channel sounding reference signal according to the predetermined first cycle; determines the arrival time of the channel sounding reference signal according to the channel sounding reference signal, and sends the arrival time to the data center, so that the data center The location of the terminal device is determined based on the arrival time.
  • a positioning device including:
  • an access module configured to access the base station through random access
  • a processing module configured to acquire channel sounding reference signal resources allocated by the base station, and use the channel sounding reference signal resources to send channel sounding reference signal to the base station according to a predetermined first period, so that the base station determines the The time of arrival of the channel sounding reference signal is used to determine the location of the terminal device.
  • a positioning device including:
  • the access module is configured to access terminal equipment accessed through random access
  • the first processing module is configured to allocate channel sounding reference signal resources to the terminal device, and receive the channel sounding reference signal sent by the terminal device according to a predetermined first period;
  • the second processing module is configured to determine the arrival time of the channel sounding reference signal according to the channel sounding reference signal, and send the arrival time to the data center, so that the data center determines the arrival time according to the arrival time The location of the end device described above.
  • the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor.
  • a processor executes the program, any of the above the method described.
  • the present disclosure also provides a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to cause a computer to execute any one of the above-mentioned Methods.
  • the positioning method and related equipment provided by the present disclosure are realized through a positioning system composed of three types of entities: terminal equipment, base stations, and data centers; among them, the terminal equipment may only have the basic communication functions in the mobile communication system The cost of design, manufacture, operation and maintenance, and power consumption are all extremely low; the base station receives the channel sounding reference signal sent by the terminal device through the wireless transceiver function and summarizes it into the data; the data center determines the location of the terminal device through the network connection with the base station and provides other terminals Device-related data, and control terminal devices.
  • the solution disclosed in the present disclosure can not only accurately locate the mobile device, but also effectively reduce the implementation cost.
  • FIG. 1 is a schematic structural diagram of a positioning system applying a positioning method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a positioning method applied to a terminal device according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a positioning method applied to a base station according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a positioning method applied to a data center according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a positioning device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a positioning device according to another embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a positioning device according to yet another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • the positioning solutions in the related art generally have the problems of high implementation cost and poor positioning accuracy.
  • common positioning solutions include traditional satellite positioning systems and positioning functions in mobile communication systems.
  • the mobile terminal receives multiple satellite signals and calculates the earth coordinates, and then maps them to the map to determine its own position information.
  • the positioning function is one of the functions provided by the whole system, which depends on the complete sending and receiving capabilities of the mobile terminal. On the one hand, the positioning is realized through the sending and receiving capabilities of the mobile terminal, and on the other hand, the location information is provided through its communication capabilities.
  • the positioning function is only one of the many functions of the entire mobile terminal, and the realization of the positioning function depends on other functions of mobile communication and cannot work alone; for users who only need to obtain the location information of the terminal device, It means that the cost of the entire mobile communication terminal needs to be paid for the location information; in addition, in order to obtain the location information, it is often necessary to communicate with the user through the mobile terminal, which requires the cost of ensuring that the mobile terminal is a user of the mobile network and supports data communication.
  • the present disclosure provides a positioning solution.
  • the positioning system applying the positioning method of the embodiment of the present disclosure includes three types of entities: a terminal device, a base station, and a data center.
  • the terminal device may only have some functions similar to the mobile terminal device, such as network finding, random access, sending channel sounding reference signal (Sounding Reference Signal, SRS), etc.
  • the above design of the terminal device can greatly reduce the implementation cost on the premise of realizing the positioning function.
  • the terminal equipment in the embodiment of the present disclosure can support a very large number and can be uniquely identified, and the design and manufacturing, operation and maintenance costs, and power consumption are extremely low;
  • the power supply module used for power supply in the terminal device in the embodiments of the present disclosure can use renewable energy or primary power to maintain a long working time, such as days, months or even years.
  • the base station can be constructed based on the existing LTE (Long Term Evolution, long-term evolution) system or the base station system in the NR (5G New Radio) system, or it can be a separately constructed base station with LTE/NR devices with similar functions.
  • the base station in the embodiment of the present disclosure can realize the positioning function by performing corresponding configuration and algorithm software upgrade according to the requirements of the positioning system on the above-mentioned equipment with the wireless transceiver function. Therefore, the base station system in the embodiment of the present disclosure can be regarded as a virtual device based on hardware devices of an existing wireless communication system, and no additional base station hardware devices need to be deployed for the positioning function.
  • the base station in the embodiment of the present disclosure can connect several remote radio units (Remote Radio Unit, RRU) through a switch to expand the coverage of the base station, especially for better coverage in indoor positioning scenarios.
  • RRU Remote Radio Unit
  • the data center is the cloud processing center of the entire positioning system.
  • the base station system Through the network connection with the base station system, it is responsible for maintaining the status information of the terminal equipment, including positioning requirements (positioning accuracy, position tracking frequency, etc.), operating status (speed, direction, etc.), current location, uplink positioning signal (SRS in the embodiment of the present disclosure) sending period, and so on.
  • the external acquisition of the location information of the terminal equipment needs to be realized through the access of the data center.
  • the user can easily grasp the location of the terminal equipment.
  • the positioning method of the embodiments of the present disclosure will be further specifically described by taking the NR mobile communication system as the hardware infrastructure equipment.
  • the positioning method in the embodiments of the present disclosure can work in a manner similar to that based on NR systems.
  • FIG. 2 it is a schematic flowchart of a positioning method applied to a terminal device according to an embodiment of the present disclosure.
  • the positioning method includes:
  • Step S201 accessing the base station through random access.
  • the terminal equipment is largely simplified based on the terminal equipment in the mobile communication system, and only necessary functions related to positioning are reserved, which can greatly reduce terminal cost and power consumption. It should be noted that, in some implementation scenarios, a general mobile terminal device can also be used as the terminal device in this embodiment after software upgrade.
  • the terminal device is provided with a unique terminal identifier (UE ID).
  • UE ID unique terminal identifier
  • the UE ID length can be 128 bits.
  • the UE ID length can be 32 bits.
  • the terminal device when performing random access, sends a random access request including UE ID to the base station.
  • the base station allocates SRS resources for the terminal device according to the random access request.
  • the SRS resource allocated to the terminal device will be uniquely bound to the UE ID of the terminal device.
  • the allocated SRS resource is only used within the scope of the current base station. It should be noted that within the scope of the same base station, the number of terminal devices that can support simultaneous operation does not exceed the number of channel sounding reference signal resources (SRS resources) that the base station can use.
  • the number of SRS resources can be flexibly configured based on parameters such as the number of terminal devices supported within the same base station and positioning performance requirements according to implementation needs.
  • Step S202 Obtain channel sounding reference signal resources allocated by the base station.
  • Step S203 using the channel sounding reference signal resource to send a channel sounding reference signal to the base station according to a predetermined first period, so that the base station can determine the arrival time of the channel sounding reference signal and use it to determine the position of the terminal device .
  • the terminal device after the terminal device obtains the SRS resource allocated by the base station, it can use the SRS resource to send an SRS at a certain period for the base station to perform subsequent processing to determine the terminal location.
  • the period in which the terminal device sends the SRS is called the first period.
  • the first period can be adjusted in real time according to the real-time requirements of positioning, the standby time (time interval between two SRS transmissions) of the terminal equipment, and the like.
  • the terminal device also needs to periodically (according to real-time positioning requirements, terminal standby time requirements, etc.) perform downlink synchronous reception of the synchronization signal block (Synchronization Signal Block, SSB) sent by the base station to determine whether it has entered other range of the base station.
  • the period in which the base station sends the SSB is referred to as the second period.
  • the terminal device may also receive the SSB sent by the base station according to a predetermined second period.
  • the first period and the second period may be set to match, so that the two periods form a 1:1 proportional relationship, that is, the terminal device sends the SRS after receiving the SSB.
  • the above setting method can also ensure that the terminal device only sends the SRS on the premise of confirming that it can receive the SSB of the current base station, so as to prevent interference with the SRS transmission of other base stations.
  • the SSB sent by the base station is received before the terminal device sends the SRS.
  • the terminal device can obtain the base station identification (base station ID) and system frame number (System Frame Number, SFN) of the base station contained in the SSB by analyzing the SSB. After randomly accessing the base station, the terminal device acquires the SRS resource bound to the UE ID allocated by the base station, and subsequently uses the SRS resource to send an SRS according to the first period. In addition, the terminal device will also store the base station ID, SFN, SRS resource index, and UE ID locally.
  • the method of this embodiment further includes a step of the terminal device re-accessing the base station.
  • the step of re-accessing the base station is performed because the terminal equipment enters the coverage area of the new base station during the moving process.
  • the step of re-accessing the base station may specifically include: in response to determining that the base station identifier in the synchronization signal block received this time is different from the base station identifier stored by the terminal device, the terminal device randomly accesses access to the target base station corresponding to the base station identifier in the synchronization signal block received this time; or, the terminal device receives the system message broadcast sent by the target base station, and obtains the system message broadcast according to the system message broadcast
  • the terminal device since the SSB sent by the base station contains the base station ID of the base station, when the terminal device parses the received SSB and determines that the base station ID in it is different from the previous base station ID stored locally, it indicates that the terminal device has moved into the The coverage of the new base station needs to be reconnected to the new base station. During specific implementation, the terminal device may perform the random access procedure again to access the new base station.
  • the data center acts as a cloud processing center, and based on the location information of the terminal equipment, the movement trajectory of the terminal equipment can be monitored in real time.
  • the data center also stores the locations of all base stations and their RRUs. The event that the terminal equipment enters the coverage of a new base station can be determined by the moving track and the position of the base station and its RRU.
  • the new base station is called a target base station.
  • the data center After the data center determines that the terminal equipment enters the coverage area of the target base station, it can notify the target base station of the UE ID of the terminal equipment, control the terminal equipment of the target base station to allocate SRS resources in advance and combine the newly allocated SRS resources with After binding the UE ID of the terminal device (it can be understood that in some embodiments, the UE ID of the terminal device can use the temporary terminal identifier generated by the base station), a system information broadcast (System Information) is sent to the terminal device. Broadcast), which broadcasts the system message to notify the terminal device of the newly allocated SRS resource for the target base station.
  • the system message broadcast is composed of a main information block (Main Information Block, MIB) and several system information blocks (System Information Block, SIB).
  • a spare bit (spare bit) will be set in the data structure of the MIB.
  • the terminal device by setting the spare bit to a predetermined value (for example, the value can be set to 1), the terminal device is notified that it needs to receive System message broadcast.
  • the index of the newly allocated SRS resource bound to the UE ID of the terminal device may also be recorded in the system information block SIB8 in the system information block.
  • SIB8 is a broadcast message that provides commercial terminal alarm services in the LTE/NR system. Its content and format can be customized, and the total number of bits of the content should not exceed 2976 bits.
  • the SIB8 used to notify the terminal device in this embodiment may use the following format:
  • the temporary terminal identifier of the newly entered terminal device 1, the index of the new SRS resource;
  • the temporary terminal identifier of the newly entered terminal device 2 the index of the new SRS resource
  • the temporary terminal identifier of the newly entered terminal device n the index of the new SRS resource.
  • the specific number of bits of each piece of content may be determined according to the total number of SRS resources and whether the temporary terminal identifier can be compressed.
  • the terminal device after receiving the system information broadcast sent by the target base station, the terminal device determines that the spare bit of the MIB is a predetermined value, and then further obtains the information from the system information block SIB8 that is pre-bound with its UE ID. The index of the newly allocated SRS resource, so as to access the target base station.
  • an embodiment of the present disclosure also provides a positioning method, and the positioning method in this embodiment is applied to a base station.
  • FIG. 3 it is a schematic flowchart of a positioning method applied to a base station according to an embodiment of the present disclosure.
  • the positioning method includes:
  • Step S301 accessing a terminal device accessed through random access.
  • the base station can be constructed based on the existing mobile communication system, which not only saves the cost of hardware deployment for the positioning system corresponding to the positioning method of the present disclosure, but also makes full use of the bandwidth resources of the current mobile communication system such as the NR system .
  • the process of the base station accessing the terminal equipment through the random access method is similar to the random access process in the existing mobile communication system.
  • the base station can also introduce the setting of the temporary terminal identity to sufficiently expand the number of UE IDs of the terminal equipment that the base station can handle.
  • the base station accessing the terminal device accessed through the random access method may specifically include: the base station receiving the random access request sent by the terminal device, and obtaining the unique terminal of the terminal device included in the random access request an identifier; the base station generates a temporary terminal identifier corresponding to the unique terminal identifier; the base station determines channel sounding reference signal resources, and binds the channel sounding reference signal resources to the temporary terminal identifier.
  • the base station after the base station obtains the UE ID of the terminal device from the SRS sent by the terminal device, it generates a temporary terminal identifier for the terminal device correspondingly.
  • the temporary terminal identifier is uniquely corresponding to the UE ID, and the temporary terminal identifier is consistent with the SRS resource binding allocated to the terminal device.
  • the base station can support the access of a large number of terminal devices, and when the number of terminal devices is large, the data processing of the UE ID will bring a certain burden to the base station.
  • a temporary terminal identifier is uniquely generated for the UE ID. The temporary terminal identifier comes from the dedicated identification sequence set by the base station corresponding to its coverage.
  • the data volume of the temporary terminal identifier is smaller than that of the UE ID.
  • the temporary terminal identifier is used to identify Binding with the SRS resource of the terminal device can effectively reduce the amount of data processing, which is equivalent to expanding the number of UE IDs of the terminal device that the base station can handle.
  • the base station is further provided with a verification step.
  • the base station When performing the verification step, the base station generates a verification sequence according to a predetermined algorithm, and sends the verification sequence to the terminal device.
  • the base station generates a check sequence according to the temporary terminal identifier of the terminal device, the specific access time and other selected information.
  • the specific access time refers to the time point when the terminal device initiates random joining, and may specifically include SFN, time slot number, symbol number, and the like. Other specific information can be selected: the index of the random access sequence used, the current base station ID and so on.
  • the terminal device receives the check sequence sent by the base station, and generates a local check sequence according to a predetermined algorithm (the same way as the base station); in response to determining that the check sequence is consistent with the local check sequence, the terminal device completes random access.
  • Step S302 Allocate channel sounding reference signal resources to the terminal device, and receive the channel sounding reference signal sent by the terminal device according to a predetermined first period.
  • Step S303 Determine the arrival time of the channel sounding reference signal according to the channel sounding reference signal, and send the arrival time to the data center, so that the data center can determine the position of the terminal device according to the arrival time .
  • the base station after completing the access with the terminal device, allocates SRS resources to the terminal device, and receives the SRS sent by the terminal device according to the first period.
  • the base station is also connected to several RRUs, and receives the SRS sent by the terminal equipment through these RRUs. At the same time, the base station also sends the SSB according to the predetermined second cycle through the RRUs, so that the terminal equipment receives the SSB for synchronization.
  • the base station receives the SRS sent by the terminal device through several RRUs connected to the base station, and each RRU calculates the arrival time of the SRS sent by the terminal device, and sends the arrival time to the data center for the data center to determine the terminal device. Location.
  • the base station determines the arrival time of the SRS sent by at least three RRU receiving end devices, and then sends the arrival time respectively determined by the three RRUs to the data center.
  • an embodiment of the present disclosure further provides a positioning method, and the positioning method in this embodiment is applied to a data center.
  • FIG. 4 it is a schematic flowchart of a positioning method applied to a data center according to an embodiment of the present disclosure.
  • the positioning method includes:
  • Step S401 obtaining the arrival time of the channel sounding reference signal uploaded by the base station; wherein, the channel sounding reference signal is sent by the terminal device based on the channel sounding reference signal resources allocated by the base station;
  • Step S402. Determine the location of the terminal device according to the arrival time.
  • the relevant data of each terminal device will be aggregated to the data center through the base station, and the relevant data may include: information such as UE ID and temporary terminal identification, the currently used SRS resources, the arrival time of the current SRS to the RRU, Current working status, etc.
  • the data center calculates and generates the location information of the terminal equipment, and maintains it in the map.
  • the specific method of calculating the location information of the terminal device according to the arrival time is the same as the calculation method used by the positioning function in the existing mobile communication system, and will not be repeated in this embodiment.
  • the data center since the data center also stores the location information of all RRUs connected to each base station, the moving track of the terminal device can be determined in combination with the location information of the terminal device.
  • the data center can also generate useful data such as the current precise location, historical trajectory, and moving speed of each terminal device by processing and combining cloud map data (including multi-layer building maps, precise location information of RRU, etc.), and provide them to data users.
  • the data center may determine the event when the terminal device moves within the coverage of a new base station. Specifically, the data center determines the target base station according to the location of the terminal device and the movement track of the terminal device, and makes the target base station send a system message broadcast to the terminal device; the system message broadcast is used to make the terminal device obtain the base station ID of the target base station and the SRS resource allocated by the target base station.
  • the data center is also provided with a terminal abnormality handling method, which specifically includes: in response to determining that the working status of the terminal device is abnormal, the data center causes the base station to send a system message broadcast to the terminal device; the system message The broadcast is used to make the terminal device perform random access again.
  • the data center can monitor the terminal equipment according to the relevant data uploaded by the base station and the terminal equipment.
  • the data center can control the base station
  • a system message broadcast is sent to a terminal device in an abnormal state, and the terminal device is re-executed random access through the system message broadcast.
  • the value setting of some specific fields in the MIB in the system message broadcast can be used to control the terminal device to stop sending the SRS and re-execute the random access.
  • the choice bit in the MIB can be used.
  • the default value of choice can be set to 0, which means that the current information is MIB; , so in this embodiment, it is used to notify the terminal equipment of abnormality), and it can be used to notify that a terminal within the current base station is preparing to have an abnormality, and that it should stop sending SRS and perform random access again.
  • the specific positioning process of the positioning method in the embodiment of the present disclosure is simpler than that of general mobile communication systems (LTE, NR, etc.), and the characteristic is that the terminal device does not need to enter the connection state under the mobile communication system. , and does not need to perform operations such as measurement and cell reselection in the IDLE state.
  • the terminal device only needs to obtain network synchronization through the In-Channel Selective Procedure (ICS) and perform random access to obtain SRS resources, and then periodically receive single-cell broadcast and MIB and send SRS.
  • ICS In-Channel Selective Procedure
  • the disclosed solution has the following characteristics: (1) a large number of terminal devices can be deployed within a certain range; (2) the cost of terminal devices is extremely low, and the settings can be discarded at any time; (3) terminal devices can be deployed at any time To start working, there is no need to pay and register with the general mobile communication system; (4) The terminal equipment is very portable in terms of volume and weight, and can be easily attached to small items; (5) The power consumption of the terminal equipment is extremely low (6) It can work in an environment covered by mobile communication base stations without redeploying the entire positioning system.
  • the present disclosure further provides a positioning device corresponding to the above positioning method applied to a terminal device.
  • the positioning device 500 includes:
  • the access module 501 is configured to access the base station through random access
  • the processing module 502 is configured to acquire channel sounding reference signal resources allocated by the base station, and use the channel sounding reference signal resources to send channel sounding reference signal to the base station according to a predetermined first period, so that the base station determines the The time of arrival of the channel sounding reference signal is used to determine the location of the terminal device.
  • the access module 501 is specifically configured to send a random access request including a unique terminal identifier to the base station, so that the base station generates a temporary terminal identifier corresponding to the unique terminal identifier, and Binding the determined channel sounding reference signal resource with the temporary terminal identifier.
  • the access module 501 is specifically configured to receive the check sequence sent by the base station, and generate a local check sequence according to a predetermined algorithm; in response to determining the check sequence and the local check sequence If they are consistent, the random access is completed.
  • the processing module 502 is further configured to receive a synchronization signal block sent by the base station according to a predetermined second period.
  • the first period matches the second period, so that the terminal device sends the channel sounding reference signal after receiving the synchronization signal block.
  • the processing module 502 is specifically configured to acquire and store the base station identifier and system frame number of the base station according to the synchronization signal block.
  • the processing module 502 is specifically configured to, in response to determining that the base station identifier in the synchronization signal block received this time is different from the base station identifier stored in the terminal device, access the current A target base station corresponding to the base station identifier in the synchronization signal block received for the second time; or, receiving a system message broadcast sent by the target base station, and acquiring the base station identifier of the target base station and the target base station according to the system message broadcast Channel sounding reference signal resources allocated by the base station.
  • the processing module 502 is specifically configured to receive the system information block SIB8 of the system message broadcast in response to determining that the spare bit of the main information block of the system message broadcast is set to a predetermined value, so as to obtain the The base station identifier of the target base station and the channel sounding reference signal resource allocated by the target base station.
  • the apparatus in the foregoing embodiments is used to implement the positioning method applied to the terminal device in any of the preceding embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.
  • the present disclosure also provides a positioning device.
  • the positioning device 600 includes:
  • the access module 601 is configured to access terminal devices accessed through random access
  • the first processing module 602 is configured to allocate channel sounding reference signal resources to the terminal device, and receive the channel sounding reference signal sent by the terminal device according to a predetermined first period;
  • the second processing module 603 is configured to determine the arrival time of the channel sounding reference signal according to the channel sounding reference signal, and send the arrival time to the data center, so that the data center can determine the arrival time according to the arrival time The location of the end device.
  • the access module 601 is specifically configured to receive the random access request sent by the terminal device, obtain the unique terminal identifier of the terminal device included in the random access request; A temporary terminal identifier corresponding to the terminal identifier; determining a channel sounding reference signal resource, and binding the channel sounding reference signal resource to the temporary terminal identifier.
  • the access module 601 is further configured to generate a check sequence according to a predetermined algorithm, and send the check sequence to the terminal device.
  • the first processing module 602 is specifically configured to send a synchronization signal block according to a predetermined second period through several remote radio units.
  • the second processing module 603 is specifically configured to respectively receive the channel sounding reference signal sent by the terminal device through at least three remote radio units, and respectively determine the arrival time; the three The arrival times respectively determined by the radio remote units are sent to the data center.
  • the apparatus in the foregoing embodiments is used to implement the positioning method applied to the base station in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.
  • the present disclosure also provides a positioning device.
  • the positioning device 700 includes:
  • the obtaining module 701 is configured to obtain the arrival time of the channel sounding reference signal uploaded by the base station; wherein the channel sounding reference signal is sent by the terminal device based on the channel sounding reference signal resources allocated by the base station;
  • the processing module 702 is configured to determine the location of the terminal device according to the arrival time.
  • the device in the foregoing embodiments is used to implement the positioning method applied to the data center in any of the preceding embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.
  • the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, the processor
  • the positioning method described in any one of the above embodiments is realized when the program is executed.
  • FIG. 8 shows a schematic diagram of a more specific hardware structure of an electronic device provided by this embodiment.
  • the device may include: a processor 1010 , a memory 1020 , an input/output interface 1030 , a communication interface 1040 and a bus 1050 .
  • the processor 1010 , the memory 1020 , the input/output interface 1030 and the communication interface 1040 are connected to each other within the device through the bus 1050 .
  • the processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit, central processing unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute related programs to realize the technical solutions provided by the embodiments of this specification.
  • a general-purpose CPU Central Processing Unit, central processing unit
  • a microprocessor an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits
  • ASIC Application Specific Integrated Circuit
  • the memory 1020 can be implemented in the form of ROM (Read Only Memory, read-only memory), RAM (Random Access Memory, random access memory), static storage device, dynamic storage device, and the like.
  • the memory 1020 can store operating systems and other application programs. When implementing the technical solutions provided by the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 1020 and invoked by the processor 1010 for execution.
  • the input/output interface 1030 is used to connect the input/output module to realize information input and output.
  • the input/output/module can be configured in the device as a component (not shown in the figure), or can be externally connected to the device to provide corresponding functions.
  • the input device may include a keyboard, mouse, touch screen, microphone, various sensors, etc.
  • the output device may include a display, a speaker, a vibrator, an indicator light, and the like.
  • the communication interface 1040 is used to connect a communication module (not shown in the figure), so as to realize the communication interaction between the device and other devices.
  • the communication module can realize communication through wired means (such as USB, network cable, etc.), and can also realize communication through wireless means (such as mobile network, WIFI, Bluetooth, etc.).
  • Bus 1050 includes a path that carries information between the various components of the device (eg, processor 1010, memory 1020, input/output interface 1030, and communication interface 1040).
  • the above device only shows the processor 1010, the memory 1020, the input/output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device may also include other components.
  • the above-mentioned device may only include components necessary to implement the solutions of the embodiments of this specification, and does not necessarily include all the components shown in the figure.
  • the electronic device in the foregoing embodiments is used to implement the corresponding positioning method in any of the preceding embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.
  • the present disclosure also provides a non-transitory computer-readable storage medium corresponding to the method in any of the above-mentioned embodiments, the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions use To make the computer execute the positioning method described in any one of the above embodiments.
  • the computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • Information may be computer readable instructions, data structures, modules of a program, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • ROM read only memory
  • EEPROM Electrically Erasable Programmable
  • the computer instructions stored in the storage medium of the above embodiments are used to enable the computer to execute the positioning method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

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Abstract

本公开提供一种定位方法及相关设备。所述方法包括：通过随机接入方式接入基站；获取所述基站分配的信道探测参考信号资源，并根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。本公开的方案能够对于移动设备进行精准定位的同时，还能够有效的降低实施成本。

Description

定位方法及相关设备 技术领域
本公开涉及通信技术领域，尤其涉及一种定位方法及相关设备。
背景技术
随着通信技术的快速发展，终端设备的定位功能在人们的日常生活中愈发不可或缺。在一些应用场景中，用户需要实现的定位效果是得知一些特定的移动设备的位置信息。
然而，在通过相关技术中的定位方案实现上述定位效果时，普遍存在实施成本高、定位精度差的问题。
发明内容
有鉴于此，本公开提出一种定位方法，能够对于移动设备进行精准定位的同时，还能够有效的降低实施成本。
本公开实施例所述的由终端设备执行的定位方法可以包括：通过随机接入方式接入基站；获取所述基站分配的信道探测参考信号资源；根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
基于同一发明构思，本公开还提供了一种由基站执行的定位方法，包括：接入通过随机接入方式接入的终端设备；向所述终端设备分配信道探测参考信号资源，并接收所述终端设备根据预定的第一周期发送的信道探测参考信号；根据所述信道探测参考信号确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
基于同一发明构思，本公开还提供了一种定位装置，包括：
接入模块，被配置为通过随机接入方式接入基站；
处理模块，被配置为获取所述基站分配的信道探测参考信号资源，并根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
基于同一发明构思，本公开还提供了一种定位装置，包括：
接入模块，被配置为接入通过随机接入方式接入的终端设备；
第一处理模块，被配置为向所述终端设备分配信道探测参考信号资源，并接收所述终端设备根据预定的第一周期发送的信道探测参考信号；
第二处理模块，被配置为根据所述信道探测参考信号确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
基于同一发明构思，本公开还提供了一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现如上任意一项所述的方法。
基于同一发明构思，本公开还提供了一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，所述计算机指令用于使计算机执行如上任意一项所述的方法。
从上面所述可以看出，本公开提供的定位方法及相关设备，通过终端设备、基站和数据中心三类实体构成的定位系统实现；其中，终端设备可以仅具有移动通信系统中基础的通信功能设计制造、运行维护成本以及功耗均极低；基站通过无线收发功能接收终端设备发送的信道探测参考信号并汇总至数据中；数据中心通过与基站的网络连接确定终端设备的位置并提供其他终端设备的相关数据，并对终端设备实现管控。本公开的方案能够对于移动设备进行精准定位的同时，还能够有效的降低实施成本。
附图说明
为了更清楚地说明本公开或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为应用本公开实施例的定位方法的定位系统结构示意图；
图2为本公开实施例应用于终端设备的定位方法流程示意图；
图3为本公开实施例应用于基站的定位方法流程示意图；
图4为本公开实施例应用于数据中心的定位方法流程示意图；
图5为本公开一个实施例的定位装置的结构示意图；
图6为本公开另一实施例的定位装置的结构示意图；
图7为本公开再一实施例的定位装置的结构示意图；
图8为本公开一个实施例的电子设备的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白，以下结合具体实施例，并参照附图，对本公开进一步详细说明。
需要说明的是，除非另外定义，本公开实施例使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开实施例中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
如背景技术部分所述，对于得知一些特定的移动设备的位置信息的这一定位需求，相关技术中的定位方案普遍存在实施成本高、定位精度差的问题。在相关技术中，常见的定位方案包括传统的卫星定位系统和移动通信系统中的定位功能。在传统的卫星定位系统中，移动终端通过接收多个卫星信号并计算地球坐标，然后映射到地图上确定自身的位置信息。在移动通信系统中，定位功能是整个系统提供的功能之一，依赖于移动终端具备完整的收发能力，一方面通过移动终端收发能力实现定位，另一方面通过其通信能力将位置信息提供出去。
在实现本公开的过程中，申请人发现上述相关技术存在问题的具体原因如下：对于传统的卫星定位系统，在建筑物内部，地下车库或者城市高楼密集区等对于卫星信号存在较多阻隔的场合，定位难以实现，定位精度也受到搜到卫星数目限制。对于移动通信系统，移动终端获得了自身的位置信息后，仍需要通过移动通信网才能将位置信息传递出去，也就是说对于需要获取特定移动终端位置信息的用户来说，还需要给终端安装移动通信模块；然而，定位功能只是整个移动终端诸多功能中的一个，同时该定位功能的实现是依 赖于移动通信的其它功能，并不能单独工作；对于只需要获取终端设备位置信息的用户来说，意味着需要为位置信息付出整个移动通信终端的成本；此外，为获取位置信息，往往需要通过移动终端与用户实现通信，而这需要保证移动终端是该移动网络的用户且支持数据通信的费用。
针对上述问题，本公开提供了一种定位方案。本公开的方案中，参考图1，应用本公开实施例的定位方法的定位系统包括终端设备、基站和数据中心三类实体。
本公开实施例中，终端设备可以仅具备部分类似移动终端设备的功能，例如找网，随机接入，发送信道探测参考信号(Sounding Reference Signal，SRS)等。上述终端设备的设计可以在实现定位功能的前提下极大的降低实施成本。具体的，由于仅具有上述移动通信系统中基础的通信功能，使得本公开实施例的终端设备可以支持非常大的数量且可以唯一标识，而且设计制造、运行维护成本以及功耗均极低；其中，由于功耗极低，本公开实施例的终端设备中用于供能的电源模块可以使用再生能源或者一次性电源即可以维持较长的工作时间，如几天、几个月甚至几年。
本公开实施例中，基站可以基于现有的LTE(Long Term Evolution，长期演进)系统或者是NR(5G New Radio)系统中的基站系统进行改造构建，也可以是单独构建的具有LTE/NR基站类似功能的设备。本公开实施例的基站在如上述具有无线收发功能的设备之上，按定位系统需求进行相应的配置及算法软件升级，即可实现定位功能。因此可以将本公开实施例的基站系统看成一个基于现有无线通信系统硬件设备的虚拟设备，并不需要为定位功能额外敷设基站硬件设备。具体的，本公开实施例的基站可以通过交换机连接若干射频拉远单元(Remote Radio Unit，RRU)，以扩展基站的覆盖范围，特别是对于室内定位场景下能够实现更佳的覆盖性。
本公开实施例中，数据中心是整个定位系统的云端处理中心，通过与基站系统的网络连接，负责维护终端设备的状态信息包括定位需求(定位精度、位置跟踪频率等)，运行状态(速度、方向等)，当前位置，上行定位信号(在本公开实施例中即为SRS)发送周期等等。外部对于终端设备的位置信息的获取都需要通过数据中心的访问来实现，结合云端地图数据，用户可以方便掌握终端设备的位置。
在后续实施例中，以NR移动通信系统作为硬件基础设备，对本公开实施例的定位方法进行进一步具体说明。对于其它无线通信系统，如LTE、6G等系统，本公开实施例的定位方法可以采用类似基于NR系统的方式工作。
本公开实施例提供了一种定位方法，本实施例的定位方法应用于终端设备。参考图2，为本公开实施例应用于终端设备的定位方法流程示意图。所述定位方法，包括：
步骤S201、通过随机接入方式接入基站。
本实施例中，终端设备基于移动通信系统中的终端设备进行大量简化而来，只保留了与定位有关的必要功能，可以极大降低终端成本和功耗。需要说明的是，在一些实施场景下，将一般的移动终端设备在进行软件升级后，也可以当做本实施例的终端设备使用。
本实施例中，终端设备设置有唯一终端标识(UE ID)。为了支持足够多的终端设备的数量，UE ID长度可以采用128位，在定位系统部署的早期，在终端设备的数量需求不大的情况下，UE ID长度可以采用32位。
具体的，在进行随机接入时，终端设备向基站发送包括有UE ID的随机接入请求。基站根据该随机接入请求为终端设备分配SRS资源，该向终端设备分配的SRS资源会与终端设备的UE ID唯一绑定，该分配的SRS资源仅在当前基站范围内使用。需要说明的是，在同一基站范围内，可以支持同时运行的终端设备的数目不超过该基站可以使用的信道探测参考信号资源(SRS资源)数。SRS资源数可以根据实施需要，基于同一基站范围内支持的终端设备数及定位性能的要求等参数进行灵活配置。
步骤S202、获取所述基站分配的信道探测参考信号资源。
步骤S203、根据预定的第一周期使用上述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
本实施例中，终端设备获取所述基站分配的SRS资源后，即可以使用该SRS资源按一定周期发送SRS，供基站进行后续处理以确定终端位置。其中，为与后续类似的表述进行区别，本实施例中，终端设备发送SRS的周期称为第一周期。该第一周期可以根据定位的实时要求，终端设备待机时间(两次发送SRS之间的时间间隔)要求等进行实时的调整。
在一些实施例中，终端设备还需要定期(根据定位实时需求，终端待机时间要求等调整)执行下行同步接收基站发送的同步信号块(Synchronization Signal Block，SSB)，用来确定当前是否已经进入其它基站的范围。本实施例中，基站发送SSB的周期称为第二周期。具体的，在终端设备发送SRS之前，还可以接收基站根据预定的第二周期发送的SSB。在具体设置上，可以将第一周期与第二周期设置为相匹配，使得二者在周期上形成1:1的比例关系，也即终端设备在接收SSB后再发送SRS。这样能够使得SRS发送和SSB接收可以合并在同一个时间附近执行，从而降低功耗。此外，上述设置方式还可以保证终端设备仅在确认能收到当前基站SSB前提下发送SRS，以防止对其它基站的SRS发送带来干扰。
具体实施时，于终端设备发送SRS之前，接收基站发送的SSB。终端设备通过对SSB的解析可以获得SSB中包含的基站的基站标识(基站ID)和系统帧号(System Frame Number，SFN)。在随机接入该基站后，终端设备获取该基站分配的与UE ID绑定的SRS资源，并后续使用该SRS资源根据第一周期发送SRS。此外，终端设备还会将基站ID、SFN、SRS资源的索引、UE ID均存储在本地。
在一些实施例中，本实施例的方法中还包括终端设备重新接入基站的步骤。该重新接入基站的步骤的执行，是由于终端设备在移动的过程中进入了新的基站覆盖范围内。则相应的，该重新接入基站的步骤可以具体包括：响应于确定当次接收到的所述同步信号块中的基站标识与所述终端设备存储的基站标识不同，所述终端设备通过随机接入方式接入当次接收到的所述同步信号块中的基站标识对应的目标基站；或，所述终端设备接收所述目标基站发送的系统消息广播，并根据所述系统消息广播获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源。
本实施例中，由于基站发送的SSB中带有基站的基站ID，则当终端设备解析接收到的SSB，确定其中的基站ID与本地存储的之前的基站ID不同时，表明终端设备移动进入了新的基站的覆盖范围，则需要重新接入该新的基站。具体实施时，终端设备可以再次执行随机接入流程，以接入该新的基站。
可选的，也可以通过数据中心进行广播的方式使终端设备接入新的基站。 本实施例中，数据中心作为云端处理中心，基于终端设备的位置信息可以实时的监控终端设备的移动轨迹，同时，数据中心还存储有所有基站及其RRU的位置，则数据中心根据终端设备的移动轨迹以及基站及其RRU的位置，可以判定出终端设备的进入新的基站的覆盖范围这一事件，本实施例中，将该新的基站称为目标基站。数据中心判定出终端设备进入目标基站的覆盖范围这一事件后，则可以将该终端设备的UE ID通知目标基站，控制该目标基站终端设备提前分配好SRS资源并将该新分配的SRS资源与该终端设备的UE ID(可以理解的是，在一些实施例中，该终端设备的UE ID可以使用基站为其生成的临时终端标识)进行绑定后，向终端设备发送系统消息广播(System Information Broadcast)，通过该系统消息广播通知终端设备该目标基站为其新分配的SRS资源。具体的，系统消息广播由一个主信息块(Main Information Block，MIB)和若干系统信息块(System Information Block，SIB)构成。其中，MIB的数据结构中会设置有备用位(spare bit)，本实施例中，通过将该备用位设置为预定值(例如，可以将该值设置为1)来，来通知终端设备需要接收系统消息广播。此外，还可以将与终端设备的UE ID绑定的新分配的SRS资源的索引记载于系统信息块中的系统信息块SIB8。SIB8是LTE/NR系统中提供商用终端告警服务的广播消息，其内容及格式可以定制，内容的总bit数不超过2976bit即可。作为一个示例，本实施例中用于通知终端设备的SIB8可以采用如下格式：
新进入终端设备1的临时终端标识，新SRS资源的索引；
新进入终端设备2的临时终端标识，新SRS资源的索引；
…
新进入终端设备n的临时终端标识，新SRS资源的索引。
其中，具体每一条内容的bit数，可以根据SRS资源总数及临时终端标识是否可以压缩来确定。
基于上述设置，本实施例中，终端设备接收到目标基站发送的系统消息广播后，确定其中的MIB的备用位为预定值，则进一步从系统信息块SIB8中获取与其UE ID已预先绑定好的新分配的SRS资源的索引，从而接入目标基站。
基于同一发明构思，本公开实施例还提供了一种定位方法，本实施例的 定位方法应用于基站。参考图3，为本公开实施例应用于基站的定位方法流程示意图。所述定位方法，包括：
步骤S301、接入通过随机接入方式接入的终端设备。
本实施例中，基站可以是基于现有移动通信系统构建的，这不仅使得本公开的定位方法对应的定位系统节省了硬件敷设成本，也使得当前移动通信系统比如NR系统的带宽资源得到充分利用。其中，基站通过随机接入方式接入的终端设备过程与现有的移动通信系统中的随机接入流程类似。
具体实施时，基站还可以引入临时终端标识的设置充分的扩展基站所能够处理的终端设备的UE ID的数量。则基站接入通过随机接入方式接入的终端设备，可以具体包括：所述基站接收所述终端设备发送的随机接入请求，获取所述随机接入请求包括的所述终端设备的唯一终端标识；所述基站生成与所述唯一终端标识对应的临时终端标识；所述基站确定信道探测参考信号资源，并将所述信道探测参考信号资源与所述临时终端标识绑定。
本实施例中，基站从终端设备发送的SRS中获取到终端设备的UE ID后，为该终端设备相应的生成临时终端标识，该临时终端标识与UE ID唯一对应，且该临时终端标识与要分配给该终端设备的SRS资源绑定。如前述实施例中所述，基站可以支持大量的终端设备的接入，且在终端设备的数量较多时，对于UE ID的数据处理将会给基站带来一定的负担，针对于此，本实施例中，为UE ID唯一对应的生成临时终端标识，该临时终端标识来自于基站对应其覆盖范围设置的专用识别序列，临时终端标识的数据量相比于UE ID更小，通过临时终端标识来与终端设备的SRS资源绑定，能够有效的减小数据处理量，等效于扩展了基站所能够处理的终端设备的UE ID的数量。
在一些实施例中，在随机接入过程中，基站还设置有校验步骤，在进行该校验步骤时，基站根据预定的算法生成校验序列，并将校验序列发送至终端设备。具体的，基站根据终端设备的临时终端标识、特定接入时间及其它选定信息生成校验序列。其中，特定接入时间是指终端设备发起随机加入的时间点，具体可以包括SFN、时隙号、符号编号等。其它特定信息可以选用：采用的随机接入序列的索引，当前基站ID等。终端设备接收基站发送的校验序列，并根据预定的算法(与基站相同的方式)生成本地校验序列；响应于确定校验序列与本地校验序列一致，终端设备完成随机接入。
步骤S302、向所述终端设备分配信道探测参考信号资源，并接收所述终端设备根据预定的第一周期发送的信道探测参考信号。
步骤S303、根据所述信道探测参考信号确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
本实施例中，与终端设备完成接入后，基站向终端设备分配SRS资源，并接收终端设备根据第一周期发送的信SRS。
此外，如前述实施例中所述，基站还连接有若干RRU，并通过该些RRU分别接收终端设备发送的SRS。同时，基站也通过该些RRU根据预定的第二周期发送SSB，使得终端设备接收SSB以进行同步。
本实施例中，基站通过其连接的若干RRU接收终端设备发送的SRS，各RRU计算终端设备发送的SRS的到达时间，并将该些到达时间发送至数据中心，以供数据中心确定终端设备的位置。其中，为实现准确的定位，基站通过至少三个RRU接收端设备发送的SRS的到达时间并分别确定到达时间，再将该三个RRU分别确定出的到达时间发送至数据中心。
基于同一发明构思，本公开实施例还提供了一种定位方法，本实施例的定位方法应用于数据中心。参考图4，为本公开实施例应用于数据中心的定位方法流程示意图。所述定位方法，包括：
步骤S401、获取基站上传的信道探测参考信号的到达时间；其中，所述信道探测参考信号是终端设备基于所述基站分配的信道探测参考信号资源发送的；
步骤S402、根据所述到达时间确定所述终端设备的位置。
本实施例中，每个终端设备的相关数据均会通过基站汇总至数据中心，该相关数据可以包括：UE ID及临时终端标识等信息，当前使用的SRS资源，当前SRS到达RRU的到达时间，当前工作状态等。根据到达时间，数据中心计算生成终端设备的位置信息，并在地图中维护。其中，根据到达时间计算终端设备的位置信息的具体方式，与现有的移动通信系统中的定位功能所使用的计算方式相同，本实施例中不再赘述。
本实施例中，由于数据中心还存储有各个基站所连接的全部RRU的位置信息，则结合终端设备的位置信息，则可以确定终端设备的移动轨迹。此 外，数据中心还可以通过处理结合云端地图数据(包括多层楼宇地图，RRU的精确位置信息等)，生成各个终端设备的当前精确位置、历史轨迹、移动速度等有用数据，提供给数据用户。
在一些实施例中，与前述实施例相对应的，数据中心可以判断出当终端设备移动至新的基站的覆盖范围内这一事件。具体的，数据中心根据终端设备的位置和所述终端设备的移动轨迹，确定目标基站，并使目标基站向终端设备发送系统消息广播；该系统消息广播用于令终端设备获取目标基站的基站ID和目标基站分配的SRS资源。
在一些实施例中，数据中心还设置有终端异常处理的方法，具体包括：响应于确定终端设备的工作状态异常，所述数据中心使基站向所述终端设备发送系统消息广播；所述系统消息广播用于令所述终端设备重新执行随机接入。
具体实施时，数据中心根据基站以及终端设备上传的相关数据，能够对终端设备进行监控，当确定出不同终端设备之间存在临时终端标识冲突、SRS资源冲突等异常状态时，数据中心可以控制基站向状态异常的终端设备发送系统消息广播，通过系统消息广播使终端设备重新执行随机接入。其中，可以使用系统消息广播中的MIB中的一些特定的字段的值的设置来控制终端设备停止发送SRS并重新执行随机接入。具体的，可以使用MIB中的choice位。作为一个示例，本实施例中，choice默认值可以设置为0，此时表示当前信息是MIB；而当choice的值设置为1时(一般情况下，choice在非默认值时的功能标准未定义，故本实施例中用来通知终端设备异常)，可以用来通知当前基站范围内有终端准备存在异常，应停止发送SRS并重新进行随机接入。
基于上述实施例可见，本公开实施例的定位方法，其具体的定位流程相比于一般移动通信系统(LTE、NR等)更加简单，特点是终端设备并不需要进入移动通信系统下的连接态，也不需要在IDLE态下进行测量以及小区重选等操作。终端设备只需要通过信道内选择性流程(ICS)获取网络同步后进行随机接入获取SRS资源，然后按周期接收单小区广播、MIB并发送SRS。作为终端设备，只需要通过SRS将位置按几毫秒、几秒或更长的周期告知基站，即只需要按较低的实时性要求提供较高精度的定位。所以，本公开的方 案具备以下特点：(1)在一定范围内可以部署很大的数量的终端设备；(2)终端设备需要的成本极低，设置随时可以抛弃；(3)终端设备随时可以开始工作，不需要向一般的移动通信系统付费注册；(4)终端设备在体积重量上都非常适合携带，可以方便附着在小件物品上；(5)终端设备的功耗极低，采用一次性电源或可再生电源持续工作几天几周甚至更久；(6)在有移动通信基站覆盖的环境下即可工作，无需重新部署整个定位系统。
需要说明的是，上述对本公开的一些实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于上述实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。
基于同一发明构思，与上述应用于终端设备的定位方法相对应的，本公开还提供了一种定位装置。
参考图5，所述定位装置500，包括：
接入模块501，被配置为通过随机接入方式接入基站；
处理模块502，被配置为获取所述基站分配的信道探测参考信号资源，并根据预定的第一周期使用上述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
在一些实施例中，接入模块501，具体被配置为向所述基站发送包括有唯一终端标识的随机接入请求，以使所述基站生成与所述唯一终端标识对应的临时终端标识，并将确定出的所述信道探测参考信号资源与所述临时终端标识绑定。
在一些实施例中，接入模块501，具体被配置接收所述基站发送的校验序列，并根据预定的算法生成本地校验序列；响应于确定所述校验序列与所述本地校验序列一致，完成所述随机接入。
在一些实施例中，处理模块502，还被配置为接收所述基站根据预定的第二周期发送的同步信号块。
在一些实施例中，所述第一周期与所述第二周期相匹配，以使所述终端 设备在接收所述同步信号块后，发送所述信道探测参考信号。
在一些实施例中，处理模块502，具体被配置为根据所述同步信号块，获取并存储所述基站的基站标识和系统帧号。
在一些实施例中，处理模块502，具体被配置为响应于确定当次接收到的所述同步信号块中的基站标识与所述终端设备存储的基站标识不同，通过随机接入方式接入当次接收到的所述同步信号块中的基站标识对应的目标基站；或，接收所述目标基站发送的系统消息广播，并根据所述系统消息广播获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源。
在一些实施例中，处理模块502，具体被配置为响应于确定所述系统消息广播的主信息块的备用位被设置为预定值，接收所述系统消息广播的系统信息块SIB8，以获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源。
为了描述的方便，描述以上装置时以功能分为各种模块分别描述。当然，在实施本公开时可以把各模块的功能在同一个或多个软件和/或硬件中实现。
上述实施例的装置用于实现前述任一实施例中应用于终端设备的定位方法，并且具有相应的方法实施例的有益效果，在此不再赘述。
基于同一发明构思，与上述应用于基站的定位方法相对应的，本公开还提供了一种定位装置。
参考图6，所述定位装置600，包括：
接入模块601，被配置为接入通过随机接入方式接入的终端设备；
第一处理模块602，被配置为向所述终端设备分配信道探测参考信号资源，并接收所述终端设备根据预定的第一周期发送的信道探测参考信号；
第二处理模块603，被配置为根据所述信道探测参考信号确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
在一些实施例中，接入模块601，具体被配置为接收所述终端设备发送的随机接入请求，获取所述随机接入请求包括的所述终端设备的唯一终端标识；生成与所述唯一终端标识对应的临时终端标识；确定信道探测参考信号资源，并将所述信道探测参考信号资源与所述临时终端标识绑定。
在一些实施例中，接入模块601，还被配置为根据预定的算法生成校验 序列，并将所述校验序列发送至所述终端设备。
在一些实施例中，第一处理模块602，具体被配置为通过若干射频拉远单元根据预定的第二周期发送同步信号块。
在一些实施例中，第二处理模块603，具体被配置为通过至少三个所述射频拉远单元分别接收所述终端设备发送的信道探测参考信号，并分别确定所述到达时间；将三个所述射频拉远单元分别确定出的所述到达时间发送至数据中心。
为了描述的方便，描述以上装置时以功能分为各种模块分别描述。当然，在实施本公开时可以把各模块的功能在同一个或多个软件和/或硬件中实现。
上述实施例的装置用于实现前述任一实施例中应用于基站的定位方法，并且具有相应的方法实施例的有益效果，在此不再赘述。
基于同一发明构思，与上述应用于数据中心的定位方法相对应的，本公开还提供了一种定位装置。
参考图7，所述定位装置700，包括：
获取模块701，被配置为获取基站上传的信道探测参考信号的到达时间；其中，所述信道探测参考信号是终端设备基于所述基站分配的信道探测参考信号资源发送的；
处理模块702，被配置为根据所述到达时间确定所述终端设备的位置。
为了描述的方便，描述以上装置时以功能分为各种模块分别描述。当然，在实施本公开时可以把各模块的功能在同一个或多个软件和/或硬件中实现。
上述实施例的装置用于实现前述任一实施例中应用于数据中心的定位方法，并且具有相应的方法实施例的有益效果，在此不再赘述。
基于同一发明构思，与上述任意实施例方法相对应的，本公开还提供了一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现上任意一实施例所述的定位方法。
图8示出了本实施例所提供的一种更为具体的电子设备硬件结构示意图，该设备可以包括：处理器1010、存储器1020、输入/输出接口1030、通信接口1040和总线1050。其中处理器1010、存储器1020、输入/输出接口1030和通信接口1040通过总线1050实现彼此之间在设备内部的通信连接。
处理器1010可以采用通用的CPU(Central Processing Unit，中央处理器)、微处理器、应用专用集成电路(Application Specific Integrated Circuit，ASIC)、或者一个或多个集成电路等方式实现，用于执行相关程序，以实现本说明书实施例所提供的技术方案。
存储器1020可以采用ROM(Read Only Memory，只读存储器)、RAM(Random Access Memory，随机存取存储器)、静态存储设备，动态存储设备等形式实现。存储器1020可以存储操作系统和其他应用程序，在通过软件或者固件来实现本说明书实施例所提供的技术方案时，相关的程序代码保存在存储器1020中，并由处理器1010来调用执行。
输入/输出接口1030用于连接输入/输出模块，以实现信息输入及输出。输入输出/模块可以作为组件配置在设备中(图中未示出)，也可以外接于设备以提供相应功能。其中输入设备可以包括键盘、鼠标、触摸屏、麦克风、各类传感器等，输出设备可以包括显示器、扬声器、振动器、指示灯等。
通信接口1040用于连接通信模块(图中未示出)，以实现本设备与其他设备的通信交互。其中通信模块可以通过有线方式(例如USB、网线等)实现通信，也可以通过无线方式(例如移动网络、WIFI、蓝牙等)实现通信。
总线1050包括一通路，在设备的各个组件(例如处理器1010、存储器1020、输入/输出接口1030和通信接口1040)之间传输信息。
需要说明的是，尽管上述设备仅示出了处理器1010、存储器1020、输入/输出接口1030、通信接口1040以及总线1050，但是在具体实施过程中，该设备还可以包括实现正常运行所必需的其他组件。此外，本领域的技术人员可以理解的是，上述设备中也可以仅包含实现本说明书实施例方案所必需的组件，而不必包含图中所示的全部组件。
上述实施例的电子设备用于实现前述任一实施例中相应的定位方法，并且具有相应的方法实施例的有益效果，在此不再赘述。
基于同一发明构思，与上述任意实施例方法相对应的，本公开还提供了一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，所述计算机指令用于使所述计算机执行如上任一实施例所述的定位方法。
本实施例的计算机可读介质包括永久性和非永久性、可移动和非可移动 媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。
上述实施例的存储介质存储的计算机指令用于使所述计算机执行如上任一实施例所述的定位方法，并且具有相应的方法实施例的有益效果，在此不再赘述。
所属领域的普通技术人员应当理解：以上任何实施例的讨论仅为示例性的，并非旨在暗示本公开的范围(包括权利要求)被限于这些例子；在本公开的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本公开实施例的不同方面的许多其它变化，为了简明它们没有在细节中提供。
本公开实施例旨在涵盖落入所附权利要求的宽泛范围之内的所有这样的替换、修改和变型。因此，凡在本公开实施例的精神和原则之内，所做的任何省略、修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (19)

  1. 一种定位方法，由终端设备执行，包括：
    通过随机接入方式接入基站；
    获取所述基站分配的信道探测参考信号资源；
    根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
  2. 根据权利要求1所述的方法，其中，通过随机接入方式接入基站包括：
    向所述基站发送包括有唯一终端标识的随机接入请求，以使所述基站生成与所述唯一终端标识对应的临时终端标识，并将确定出的所述信道探测参考信号资源与所述临时终端标识绑定。
  3. 根据权利要求2所述的方法，进一步包括：
    在向所述基站发送包括有唯一终端标识的随机接入请求之后，接收所述基站发送的校验序列，并根据预定的算法生成本地校验序列；
    响应于确定所述校验序列与所述本地校验序列一致，完成所述随机接入。
  4. 根据权利要求1所述的方法，进一步包括：
    在根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号之前，接收所述基站根据预定的第二周期发送的同步信号块。
  5. 根据权利要求4所述的方法，其中，所述第一周期与所述第二周期相匹配，以使所述终端设备在接收所述同步信号块后，发送所述信道探测参考信号。
  6. 根据权利要求4所述的方法，进一步包括：
    在接收所述基站根据预定的第二周期发送的同步信号块之后，根据所述同步信号块，获取并存储所述基站的基站标识和系统帧号。
  7. 根据权利要求6所述的方法，进一步包括：响应于确定当次接收到的所述同步信号块中的基站标识与所述终端设备存储的基站标识不同，所述终端设备通过随机接入方式接入当次接收到的所述同步信号块中的基站标识对应的目标基站。
  8. 根据权利要求6所述的方法，进一步包括：所述终端设备接收所述目 标基站发送的系统消息广播，并根据所述系统消息广播获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源。
  9. 根据权利要求8所述的方法，其中，所述终端设备接收所述目标基站发送的系统消息广播，并根据所述系统消息广播获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源包括：
    响应于确定所述系统消息广播的主信息块的备用位被设置为预定值，所述终端设备接收所述系统消息广播的系统信息块SIB8，以获取所述目标基站的基站标识和所述目标基站分配的信道探测参考信号资源。
  10. 根据权利要求1至9任意一项所述的方法，其中，所述终端设备仅设置有用于与基站进行通信、执行随机接入和发送信道探测参考信号的硬件模块，以及为所述硬件模块供能的电源模块。
  11. 一种定位方法，其基站执行，包括：
    接入通过随机接入方式接入的终端设备；
    向所述终端设备分配信道探测参考信号资源；
    接收所述终端设备根据预定的第一周期发送的信道探测参考信号；
    根据所述信道探测参考信号确定所述信道探测参考信号的到达时间；
    将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
  12. 根据权利要求11所述的方法，其中，接入通过随机接入方式接入的终端设备包括：
    接收所述终端设备发送的随机接入请求；
    获取所述随机接入请求包括的所述终端设备的唯一终端标识；
    生成与所述唯一终端标识对应的临时终端标识；
    确定信道探测参考信号资源；以及
    将所述信道探测参考信号资源与所述临时终端标识绑定。
  13. 根据权利要求11所述的方法，进一步包括：在接收所述终端设备发送的随机接入请求之后，根据预定的算法生成校验序列，并将所述校验序列发送至所述终端设备。
  14. 根据权利要求11所述的方法，进一步包括：通过若干射频拉远单元根据预定的第二周期发送同步信号块。
  15. 根据权利要求14所述的方法，其中，确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心包括：
    通过至少三个所述射频拉远单元分别接收所述终端设备发送的信道探测参考信号，并分别确定所述到达时间；以及
    将三个所述射频拉远单元分别确定出的所述到达时间发送至数据中心。
  16. 一种定位装置，包括：
    接入模块，被配置为通过随机接入方式接入基站；
    处理模块，被配置为获取所述基站分配的信道探测参考信号资源，并根据预定的第一周期使用所述信道探测参考信号资源向所述基站发送信道探测参考信号，以使所述基站确定所述信道探测参考信号的到达时间并用于确定所述终端设备的位置。
  17. 一种定位装置，其特征在于，包括：
    接入模块，被配置为接入通过随机接入方式接入的终端设备；
    第一处理模块，被配置为向所述终端设备分配信道探测参考信号资源，并接收所述终端设备根据预定的第一周期发送的信道探测参考信号；
    第二处理模块，被配置为根据所述信道探测参考信号确定所述信道探测参考信号的到达时间，并将所述到达时间发送至数据中心，以使所述数据中心根据所述到达时间确定所述终端设备的位置。
  18. 一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其特征在于，所述处理器执行所述程序时实现如权利要求1至15任意一项所述的方法。
  19. 一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，其特征在于，所述计算机指令用于使计算机执行如权利要求1至15任意一项所述的方法。
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