WO2019192325A1 - 一种通信设备定位方法及相关设备 - Google Patents

一种通信设备定位方法及相关设备 Download PDF

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Publication number
WO2019192325A1
WO2019192325A1 PCT/CN2019/078983 CN2019078983W WO2019192325A1 WO 2019192325 A1 WO2019192325 A1 WO 2019192325A1 CN 2019078983 W CN2019078983 W CN 2019078983W WO 2019192325 A1 WO2019192325 A1 WO 2019192325A1
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Prior art keywords
communication device
prs
prss
communications device
communication
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PCT/CN2019/078983
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English (en)
French (fr)
Inventor
郭文婷
张锦芳
卢磊
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华为技术有限公司
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Publication of WO2019192325A1 publication Critical patent/WO2019192325A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • 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
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a communication device positioning method and related devices.
  • the mobile positioning technology refers to the wireless communication device acquiring the spatial location information of the mobile user by means of wireless communication technology.
  • the basic principle of the mobile positioning technology is that the moving target interacts with a fixed base station (ground or air) with a plurality of known coordinate positions to obtain corresponding measurement parameters, and then uses an appropriate processing method to obtain the position of the moving target in space.
  • a fixed base station ground or air
  • the absolute position determines the relative position between the two communication devices such that the measurement delay of the relative position between the communication devices is increased.
  • the embodiment of the invention discloses a communication device positioning method and related device, which are used for reducing the measurement delay of the relative position between the communication devices.
  • the first aspect discloses a communication device positioning method, where a first communication device sends a first positioning signal (PRS) to a second communication device, and sends a resource location including the first PRS to the second communication device and is used for Control information indicating whether the first communication device sends the indication information of the first PRS to the second communication device, the first PRS and the control information may instruct the second communication device to receive the second PRS according to the resource location, and according to the second PRS measurement The relative position between a communication device and a second communication device.
  • PRS positioning signal
  • the second PRS is a PRS received by the second communications device after the first PRS is transmitted through the channel.
  • control information may further include scrambling code information
  • the first communications device may generate a first initial value according to the scrambling code information, and generate a first PRS according to the first initial value.
  • the second communication device may generate a second initial value according to the scrambling code information, generate a third PRS according to the second initial value, and measure a relative position between the first communication device and the second communication device according to the second PRS and the third PRS. . Since the scrambling code information of different communication devices is different, the communication device receiving the information can distinguish the PRS signals sent by different communication devices by using the scrambling code information.
  • the first communication device and the second communication device belong to the same group, and the first communication device may generate the first number according to the group number of the group in which the first communication device is located and the number of the first communication device in the group. An initial value, and generating a first PRS based on the first initial value.
  • the second communication device may generate a second initial value according to the group number of the group in which the first communication device is located and the number of the first communication device in the group, generate a third PRS according to the second initial value, and according to the second PRS and
  • the third PRS measures the relative position between the first communication device and the second communication device. Since the communication devices belong to the same group, the PRS transmitted between them can only be recognized by the communication devices belonging to the same group, and the communication devices outside the group cannot be identified. Therefore, the security of the positioning can be improved.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmit antennas of the first communication device, and M is an integer greater than or equal to 2.
  • the second communication device may receive M target PRSs according to the resource location, measure relative positions between the first communication device and the second communication device according to each target PRS to obtain M relative positions, and determine the first position according to the M relative positions.
  • a target relative position between the communication device and the second communication device such that the relative position between the communication devices can be measured by the plurality of PRSs.
  • the receiving communication device can measure the distance from each antenna of the transmitting communication device, thereby obtaining spatial position information of the transmitting communication device, such as width, height, length, and the like.
  • the M target PRSs are PRSs that are received by the second communication device after the M PRSs are transmitted through the channel, and any two of the M target PRSs are orthogonal to each other.
  • control information may also include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, and N is the maximum number of transmit antennas of the predetermined communication device.
  • the first communication device may further send data to the second communication device
  • the control information may further include information for indicating the data
  • the resource for transmitting the data and the resource for transmitting the first PRS are mutually Orthogonally
  • the data and control information may instruct the second communication device to process the data according to the information to obtain target data, so that the two communication devices can transmit data while transmitting the PRS.
  • a second aspect discloses a communication device comprising means for performing the communication device positioning method provided by the first aspect or any of the possible implementations of the first aspect.
  • a third aspect discloses a communication device comprising a processor, a memory for storing program code, a processor for executing program code, and a transceiver for communicating with other communication devices.
  • the processor executes the program code stored in the memory, the processor is caused to perform the communication device positioning method disclosed in any of the possible implementations of the first aspect or the first aspect.
  • a fourth aspect discloses a readable storage medium storing program code for a communication device positioning method disclosed by the communication device for performing the first aspect or any of the possible implementations of the first aspect.
  • the fifth aspect discloses a communication device positioning method, where the second communication device receives the resource location including the first PRS sent by the first communication device, and the indication information used to indicate whether the first communication device sends the first PRS to the second communication device.
  • Control information receiving a second PRS according to the resource location, and measuring a relative position between the first communication device and the second communication device according to the second PRS. Since the relative position between the two communication devices can be directly measured between the two communication devices by transmitting the PRS without passing through the fixed base station, the measurement delay of the relative position between the communication devices can be reduced; in addition, for no network coverage In scenarios such as tunnels or viaducts, the positioning accuracy can be improved by relative positioning between communication devices.
  • the second PRS is a PRS received by the second communication device after the first PRS is transmitted through the channel.
  • control information may further include scrambling code information
  • the second communication device may generate a second initial value according to the scrambling code information, generate a third PRS according to the second initial value, and according to the second PRS and the third PRS A relative position between the first communication device and the second communication device is measured. Since the scrambling code information of different communication devices is different, the communication device receiving the information can distinguish the PRS signals sent by different communication devices by using the scrambling code information.
  • the first communication device and the second communication device belong to the same group, and the second communication device may generate the first number according to the group number of the group in which the first communication device is located and the number of the first communication device in the group. And a second initial value, generating a third PRS according to the second initial value, and measuring a relative position between the first communication device and the second communication device according to the second PRS and the third PRS. Since the communication devices belong to the same group, the PRS transmitted between them can only be recognized by the communication devices belonging to the same group, and the communication devices outside the group cannot be identified, so that the security of the positioning can be improved.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmit antennas of the first communication device, and M is an integer greater than or equal to 2.
  • the second communication device may receive M target PRSs according to the resource location, measure a relative position between the first communication device and the second communication device according to each target PRS to obtain M relative positions, and determine the first position according to the M relative positions.
  • a target relative position between a communication device and a second communication device By transmitting PRS through multiple antennas, the diversity of measurement channels of the receiving communication device can be increased, thereby improving the measurement accuracy of the relative position between the communication devices.
  • the receiving communication device can measure the distance from the respective antennas of the transmitting communication device, thereby obtaining spatial position information, such as width, height, length, etc., of the transmitting communication device.
  • the M target PRSs are PRSs that are received by the second communication device after the M PRSs are transmitted through the channel, and any two of the M target PRSs are orthogonal to each other.
  • control information may also include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, and N is the maximum number of transmit antennas of the predetermined communication device.
  • the second communication device receives the data sent by the first communication device, and the control information may further include information for indicating the data, and the resource for transmitting the data and the resource for transmitting the first PRS are mutually positive
  • the data is processed by processing the data according to the information, so that the two communication devices can transmit the data while transmitting the PRS.
  • a sixth aspect discloses a communication device comprising means for performing the communication device positioning method provided by any of the possible implementations of the fifth aspect or the fifth aspect.
  • a seventh aspect discloses a communication device comprising a processor, a memory for storing program code, a processor for executing program code, and a transceiver for communicating with other communication devices.
  • the processor executes the program code stored in the memory, the processor is caused to perform the communication device positioning method disclosed in any of the possible implementations of the fifth aspect or the fifth aspect.
  • An eighth aspect discloses a readable storage medium storing program code for a communication device positioning method disclosed by the communication device for performing any of the five possible implementations of the first aspect or the fifth aspect.
  • FIG. 1 is a schematic diagram of a V2X disclosed in an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a principle of AOA positioning disclosed in an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for locating a communication device according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of another method for locating a communication device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of still another method for locating a communication device according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another principle of AOA positioning disclosed in an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another communication device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of still another communication device according to an embodiment of the present invention.
  • the embodiment of the invention discloses a communication device positioning method and related device, which are used for reducing the measurement delay of the relative position between the communication devices. The details are described below separately.
  • FIG. 1 is a schematic diagram of a V2X according to an embodiment of the present invention.
  • the V2X includes a vehicle to vehicle (V2V) communication, a vehicle to a pedestrian (V2P).
  • V2X communication is aimed at high-speed equipment represented by vehicles. It is the basic technology and key technologies for future applications where the positioning accuracy is very high, such as smart cars, automatic driving, intelligent transportation systems and other scenarios.
  • the application scenario of V2X communication determines that the positioning accuracy in the traditional mobile positioning technology has not met the requirements. For safety considerations, the application accuracy of intelligent driving, remote driving and other application scenarios must be below 1 meter.
  • LTE V2X communication can support communication scenarios with network coverage and no network coverage. At present, LTE V2X positioning cannot be effectively supported, especially the relative positioning requirements between V-UEs.
  • 5G New Radio (NR) V2X will be further developed, such as supporting lower positioning delay and more accurate user positioning services to meet a wider range of applications. Application scenario requirements.
  • FIG. 2 is a schematic diagram of a principle of AOA positioning according to an embodiment of the present invention.
  • A is a PRS transmission source
  • B and C are two signal receivers with known distances respectively, respectively, and the receiving arrival angle of B and the receiving arrival angle of C are calculated, and the receiving arrival angle of B is calculated.
  • the difference ⁇ from the reception angle of arrival of C, in the case where the BC side length is known, the vertical distance between two points A to BC can be calculated.
  • the AOA positioning technology can be applied to the scene where the vehicle is relatively positioned.
  • the two antennas of the rear vehicle distributed on the left and right sides of the vehicle head are B and C.
  • the vehicle can be obtained.
  • the relative position between the two is also the same method. At a certain angle, it is possible to simultaneously locate the left and right and front and rear relative distances between the vehicles, and the closer the distance between the two, the higher the accuracy of the measurement.
  • FIG. 3 is a schematic flowchart diagram of a method for locating a communication device according to an embodiment of the present invention. Wherein, the communication device positioning method is described from the perspective of the first communication device and the second communication device. As shown in FIG. 3, the communication device positioning method may include the following steps.
  • the first communications device sends a first PRS to the second communications device.
  • the first communication device when the first communication device needs to measure the relative position between the first communication device and the second communication device, or the first communication device receives the relative between the first communication device and the second communication device.
  • the first PRS When the location is measured, the first PRS will be sent to the second communication device, and the first PRS may be a pilot sequence.
  • the first communications device sends control information including a resource location of the first PRS to the second communications device.
  • the first communication device sends the control information to the second communication device
  • the control information may include the resource location of the first PRS and the indication of whether the first communication device is Sending the indication information of the first PRS to the second communication device, where the resource location of the first PRS is the resource location used by the first communication device to send the first PRS to the second communication device.
  • the control information includes the indication information, it may indicate that the first communication device must direct the second communication device to send the PRS. It may also indicate that it is required to further determine, according to the indication information, whether the first communication device sends the first PRS to the second communication device.
  • the control information may be composed of side bits of the Sidelink Assignment (SA) information.
  • SA Sidelink Assignment
  • One bit can be added to describe the indication information, and it can be considered that when the value on this bit is 1, it indicates that the first communication device sends the first PRS to the second communication device, and when the value on this bit is 0, it indicates The first communication device does not transmit the first PRS to the second communication device, and vice versa.
  • the log 2 K bits can be added to describe the resource location of the first PRS, and K represents the number of types of resource locations.
  • the second communications device receives the second PRS according to the resource location of the first PRS.
  • the second communication device determines, according to the indication information included in the control information, whether the first communication device sends the first PRS to the second communication device, when the indication information indicates When a communication device sends the first PRS to the second communication device, the second PRS is received according to the resource location of the first PRS, that is, the second PRS is received from the resource location of the first PRS.
  • the second PRS is a PRS received by the second communications device after the first PRS is transmitted through the channel.
  • the second communications device measures a relative location between the first communications device and the second communications device according to the second PRS.
  • control information may further include scrambling code information.
  • FIG. 4 is a schematic flowchart diagram of another communication device positioning method according to an embodiment of the present invention. As shown in FIG. 4, before the step 301, the communication device positioning method may further include the following steps:
  • the first communications device generates a first initial value according to the scrambling code information, and generates a first PRS according to the first initial value.
  • the first communication device when the first communication device needs to measure the relative position between the first communication device and the second communication device, or the first communication device receives the relative between the first communication device and the second communication device.
  • the first initial value may be generated according to the scrambling code information, and the first PRS may be generated according to the first initial value.
  • step 304 may include: the second communications device generates a second initial value according to the scrambling code information, generates a third PRS according to the second initial value, and measures the first communications device according to the second PRS and the third PRS.
  • the first initial value is the same as the second initial value
  • the third PRS is the same as the first PRS.
  • the first initial value and the second initial value can be expressed as follows:
  • n s is a slot number
  • v is the symbol index (symbol index). It can be seen that the first initial value and the second initial value are The function of n s and v.
  • a representation of the first initial value and the second initial value is as follows:
  • N cp is the cyclic prefix (Cyclic Prefix, CP) mode.
  • CP Cyclic Prefix
  • FIG. 5 is a schematic flowchart diagram of another communication device positioning method according to an embodiment of the present invention. As shown in FIG. 5, before the step 301, the communication device positioning method may further include the following steps:
  • the first communications device generates a first initial value according to the group number of the group in which the first communications device is located and the number of the first communications device in the group, and generates a first PRS according to the first initial value.
  • the first communication device when the first communication device needs to measure the relative position between the first communication device and the second communication device, or the first communication device receives the relative between the first communication device and the second communication device.
  • the first communication device may first generate a first initial value according to the group number of the group in which the first communication device is located and the number of the first communication device in the group, and generate the first according to the first initial value. PRS.
  • the step 304 may include: the second communication device generates a second initial value according to the group number of the group in which the first communication device is located and the number of the first communication device in the group, and generates the second initial value according to the second initial value. a third PRS, and measuring a relative position between the first communication device and the second communication device according to the second PRS and the third PRS.
  • the first initial value is the same as the second initial value
  • the third PRS is the same as the first PRS.
  • the first initial value and the second initial value can be expressed as follows:
  • c init is a first initial value and a second initial value
  • G RNTI is a group number of a group in which the first communication device is located, The number of the first communication device in the group, n s is the slot number, and v is the symbol index. It can be seen that the first initial value and the second initial value are G RNTI , The function of n s and v.
  • a representation of the first initial value and the second initial value is as follows:
  • the administrator configures whether members in the group send PRS.
  • the members in the group will use the default time division multiplexing (TDM) or frequency division multiplexing (Frequency Division Multiplexing) according to the number in the group.
  • TDM time division multiplexing
  • Frequency Division Multiplexing Frequency Division Multiplexing
  • the FDM method sequentially sends the PRS, and the resources occupied by the members in the group to send the PRS can be applied in advance by the administrator.
  • the measurement command sent by the manager is carried by unicast, the receiving group member sends the PRS on a certain time-frequency resource originally applied by the manager.
  • the antennas may be distributed around the communication device in a distributed configuration, which provides for the relative positioning between the communication devices in a manner that is achieved by AOA positioning techniques.
  • FIG. 6 is a schematic diagram of another principle of AOA positioning disclosed in an embodiment of the present invention.
  • the two transmitting antennas A and D of the front communication device respectively transmit different PRSs
  • B and C are two receiving antennas of the rear communication device, and the vertical distances of A and D to BC can be respectively calculated.
  • the post-communication device is able to determine that A and D belong to the same communication device, not only the distance between the communication devices but also the width of the pre-communication device can be measured.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmit antennas of the first communication device, and M is an integer greater than or equal to 2.
  • Step 303 The second communications device receives the second PRS according to the resource location of the first PRS, where the second communications device receives the M target PRSs according to the resource location, where the M target PRSs are transmitted by the M PRSs after the channel is transmitted by the second communications.
  • the PRS received by the device, any two of the M target PRSs are orthogonal to each other.
  • Step 304 may include: the second communication device measures a relative position between the first communication device and the second communication device according to each target PRS to obtain M relative positions, and determines the first communication device and the second according to the M relative positions.
  • the PRS sent by each antenna can be expressed as follows:
  • control information may further include the number M of transmitting antennas of the first communications device, where E in the above formula is M, and x bits may be added to the SA information to describe M, and x may be log 2 M, for example. : When M is 16, x is 4.
  • M is an integer less than or equal to N, where N is the maximum number of transmit antennas of the preset communication device, that is, the maximum number of transmit antennas of the default communication device of the first communication device and the second communication device.
  • N is the maximum number of transmit antennas of the preset communication device, that is, the maximum number of transmit antennas of the default communication device of the first communication device and the second communication device.
  • the first communication device may send data to the second communication device while transmitting the first PRS and the control information to the second communication device.
  • the control information may further include information for indicating the data.
  • the resource for transmitting the data and the resource for transmitting the first PRS are orthogonal to each other.
  • the second communication device After receiving the data transmitted by the first communication device, the second communication device processes the data according to the information to obtain target data.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • the communication device is the first communication device in FIGS. 3-5.
  • the communication device can include:
  • the communication unit 701 is configured to send a PRS to the second communications device.
  • the communication unit 701 is further configured to send control information to the second communications device, where the control information includes a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device, the first PRS And the control information is used to instruct the second communication device to receive the second PRS according to the resource location, and measure the relative position between the first communication device and the second communication device according to the second PRS, where the second PRS is the first PRS transmitted through the channel The PRS received by the second communication device.
  • the control information includes a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device, the first PRS
  • the control information is used to instruct the second communication device to receive the second PRS according to the resource location, and measure the relative position between the first communication device and the second communication device according to the second PRS, where the second PRS is the first PRS transmitted through the channel The PRS received by the second communication device.
  • control information may further include scrambling code information
  • communications device may further include:
  • the generating unit 702 is configured to generate a first initial value according to the scrambling code information received by the communication unit 701;
  • the generating unit 702 is further configured to generate a first PRS according to the first initial value
  • the second communication device measures the relative position between the first communication device and the second communication device according to the second PRS, the second communication device generates a second initial value according to the scrambling code information, and generates a third PRS according to the second initial value, And measuring a relative position between the first communication device and the second communication device according to the second PRS and the third PRS.
  • the first communication device and the second communication device belong to the same group, and the communication device may further include:
  • the generating unit 702 is configured to generate a first initial value according to the group number of the group in which the first communication device is located and the number of the first communication device in the group;
  • the generating unit 702 is further configured to generate a first PRS according to the first initial value
  • the measuring, by the second communications device, the relative location between the first communications device and the second communications device according to the second PRS includes: the second communications device according to the group number of the group in which the first communications device is located, and the first communications device in the group The number generates a second initial value, generates a third PRS according to the second initial value, and measures a relative position between the first communication device and the second communication device according to the second PRS and the third PRS.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmitting antennas of the first communications device, and M is an integer greater than or equal to 2;
  • the second communications device Receiving, by the second communications device, the second PRS according to the resource location, and measuring the relative location between the first communications device and the second communications device according to the second PRS, the second communications device receiving, according to the resource location, the M target PRSs, according to Each target PRS measures a relative position between the first communication device and the second communication device to obtain M relative positions, and determines a target relative position between the first communication device and the second communication device according to the M relative positions,
  • the M target PRSs are PRSs that are received by the second communication device after the M PRSs are transmitted through the channel, and any two of the M target PRSs are orthogonal to each other.
  • control information may further include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, where N is the maximum number of transmit antennas of the preset communication device.
  • the communication unit 701 is further configured to send data to the second communications device, where the control information may further include information for indicating the data, and the resource for sending the data is used to send the first PRS.
  • the resources are orthogonal to each other, and the data and control information are used to instruct the second communication device to process the data according to the information to obtain target data.
  • FIG. 8 is a schematic structural diagram of another communication device according to an embodiment of the present invention.
  • the communication device is the first communication device in FIGS. 3-5.
  • the communication device can include a processor 801, a memory 802, a transceiver 803, and a bus 804.
  • the processor 801 can be a general purpose central processing unit (CPU), a plurality of CPUs, a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present invention. integrated circuit.
  • the memory 802 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • Memory 802 can exist independently and bus 804 is coupled to processor 801. Memory 802 can also be integrated with processor 801. Bus 804 can include a path for communicating information between the components described above.
  • the transceiver 803 can be a transceiver antenna or other transceiver devices. among them:
  • the transceiver 803 is configured to send a first positioning signal PRS to the second communications device;
  • the transceiver 803 is further configured to send control information to the second communications device, where the control information includes a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device, the first PRS And the control information is used to instruct the second communication device to receive the second PRS according to the resource location, and measure the relative position between the first communication device and the second communication device according to the second PRS, where the second PRS is the first PRS transmitted through the channel The PRS received by the second communication device.
  • the control information includes a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device, the first PRS
  • the control information is used to instruct the second communication device to receive the second PRS according to the resource location, and measure the relative position between the first communication device and the second communication device according to the second PRS, where the second PRS is the first PRS transmitted through the channel The PRS received by the second communication device.
  • control information may further include scrambling code information
  • the memory 802 stores a set of program codes
  • the processor 801 is configured to call the program code stored in the memory 802 to perform the following operations:
  • the second communication device measures the relative position between the first communication device and the second communication device according to the second PRS, the second communication device generates a second initial value according to the scrambling code information, and generates a third PRS according to the second initial value, And measuring a relative position between the first communication device and the second communication device according to the second PRS and the third PRS.
  • the first communication device and the second communication device belong to the same group, and the processor 801 is further configured to invoke the program code stored in the memory 802 to perform the following operations:
  • the measuring, by the second communications device, the relative location between the first communications device and the second communications device according to the second PRS includes: the second communications device according to the group number of the group in which the first communications device is located, and the first communications device in the group The number generates a second initial value, generates a third PRS according to the second initial value, and measures a relative position between the first communication device and the second communication device according to the second PRS and the third PRS.
  • the first PRS includes M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmitting antennas of the first communications device, and M is an integer greater than or equal to 2;
  • the second communications device Receiving, by the second communications device, the second PRS according to the resource location, and measuring the relative location between the first communications device and the second communications device according to the second PRS, the second communications device receiving the M target PRSs according to the resource location, according to each
  • the target PRS measures a relative position between the first communication device and the second communication device to obtain M relative positions, and determines a target relative position between the first communication device and the second communication device according to the M relative positions, M
  • the target PRS is a PRS received by the second communication device after the M PRSs are transmitted through the channel, and any two of the M target PRSs are orthogonal to each other.
  • control information may further include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, where N is the maximum number of transmit antennas of the preset communication device.
  • the transceiver 803 is further configured to send data to the second communications device, where the control information further includes information for indicating the data, a resource for sending the data, and a third PRS for sending the data.
  • the resources are orthogonal to each other, and the data and control information are used to instruct the second communication device to process the data based on the information to obtain target data.
  • step 305 can be performed by processor 801 and memory 802 in the communication device, and steps 301-32 can be performed by transceiver 803 in the communication device.
  • the generating unit 702 can be implemented by a processor 801 and a memory 802 in the communication device, and the communication unit 701 can be implemented by a transceiver 803 in the communication device.
  • FIG. 9 is a schematic structural diagram of still another communication device according to an embodiment of the present invention.
  • the communication device is the second communication device in FIGS. 3-5.
  • the communication device can include:
  • the communication unit 901 is configured to receive control information sent by the first communications device, where the control information may include a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device;
  • the communication unit 901 is further configured to receive, according to the resource location, a second PRS, where the second PRS is a PRS that is received by the second communications device after the first PRS is transmitted through the channel;
  • the measuring unit 902 is configured to measure a relative position between the first communications device and the second communications device according to the second PRS received by the communications unit 901.
  • control information may further include scrambling code information
  • the measuring unit 902 is specifically configured to:
  • a relative position between the first communication device and the second communication device is measured according to the second PRS and the third PRS.
  • the first communications device and the second communications device belong to the same group
  • the measuring unit 902 is specifically configured to:
  • a relative position between the first communication device and the second communication device is measured according to the second PRS and the third PRS.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmitting antennas of the first communications device, and M is an integer greater than or equal to 2;
  • the receiving, by the communication unit 901, the second PRS according to the resource location includes:
  • the M target PRSs are PRSs that are received by the second communication device after the M PTSs are transmitted through the channel, and any two PRSs of the M target PRSs are orthogonal to each other;
  • the measuring unit 902 is specifically configured to:
  • a target relative position between the first communication device and the second communication device is determined according to the M relative positions.
  • control information may further include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, where N is the maximum number of transmit antennas of the preset communication device.
  • the communication unit 901 is further configured to receive data sent by the first communications device, where the control information may further include information for indicating the data, and the resource for transmitting the data is used for transmitting the first
  • the resources of the PRS are orthogonal to each other;
  • the communication device can also include:
  • the processing unit 903 is configured to process the data according to the information received by the communication unit 901 to obtain target data.
  • FIG. 10 is a schematic structural diagram of still another communication device according to an embodiment of the present invention.
  • the communication device is the second communication device in Figures 3-5.
  • the communication device can include a processor 1001, a memory 1002, a transceiver 1003, and a bus 1004.
  • the processor 1001 may be a general purpose central processing unit (CPU), a plurality of CPUs, a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present invention. integrated circuit.
  • the memory 1002 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 1002 may be independent and the bus 1004 is coupled to the processor 1001.
  • the memory 1002 can also be integrated with the processor 1001.
  • Bus 1004 can include a path for communicating information between the components described above.
  • the transceiver 1003 can be a transceiver antenna or other transceiver device. among them:
  • the transceiver 1003 is configured to receive control information sent by the first communications device, where the control information may include a resource location of the first PRS and indication information used to indicate whether the first communications device sends the first PRS to the second communications device;
  • the transceiver 1003 is further configured to receive a second PRS according to the resource location, where the second PRS is a PRS received by the second communications device after the first PRS is transmitted through the channel;
  • the memory 1002 stores a set of program codes, and the processor 1001 is configured to call the program code stored in the memory 1002 to perform the following operations:
  • a relative position between the first communication device and the second communication device is measured according to the second PRS.
  • control information may further include scrambling code information
  • the measuring, by the processor 1001, the relative position between the first communications device and the second communications device according to the second PRS includes:
  • a relative position between the first communication device and the second communication device is measured according to the second PRS and the third PRS.
  • the first communications device and the second communications device belong to the same group
  • the measuring, by the processor 1001, the relative position between the first communications device and the second communications device according to the second PRS includes:
  • a relative position between the first communication device and the second communication device is measured according to the second PRS and the third PRS.
  • the first PRS may include M PRSs, and any two PRSs of the M PRSs are orthogonal to each other, where M is the number of transmitting antennas of the first communications device, and M is an integer greater than or equal to 2;
  • the receiving, by the transceiver 1003, the second PRS according to the resource location includes:
  • the M target PRSs are PRSs that are received by the second communication device after the M PTSs are transmitted through the channel, and any two PRSs of the M target PRSs are orthogonal to each other;
  • the measuring, by the processor 1001, the relative position between the first communications device and the second communications device according to the second PRS includes:
  • a target relative position between the first communication device and the second communication device is determined according to the M relative positions.
  • control information may further include the number M of transmit antennas of the first communication device.
  • M is an integer less than or equal to N, where N is the maximum number of transmit antennas of the preset communication device.
  • the transceiver 1003 is further configured to receive data sent by the first communications device, where the control information may further include information for indicating the data, and the resource for transmitting the data is used for transmitting the first
  • the resources of the PRS are orthogonal to each other;
  • the processor 1001 is further configured to call the program code stored in the memory 1002 to perform the following operations:
  • the data is processed based on the information to obtain target data.
  • step 304 and the step of processing the data according to the information may be performed by the processor 1001 and the memory 1002 in the communication device, and the step of receiving the control information and the data in step 303 may be performed by the transceiver 1003 in the communication device.
  • the measuring unit 902 and the processing unit 903 can be implemented by the processor 1001 and the memory 1002 in the communication device, and the communication unit 901 can be implemented by the transceiver 1003 in the communication device.
  • the embodiment of the invention further discloses a readable storage medium storing program code for the communication device to perform the communication device positioning method shown in FIG. 3-5.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Abstract

本发明实施例公开一种通信设备定位方法及相关设备，包括：第一通信设备向第二通信设备发送第一PRS；向第二通信设备发送控制信息，控制信息包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息，第一PRS和控制信息用于指示第二通信设备根据该资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS。实施本发明实施例，可以减少通信设备间相对位置的测量时延。

Description

一种通信设备定位方法及相关设备
本申请要求于2018年04月02日提交中国专利局、申请号为2018102839796、发明名称为“一种通信设备定位方法及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种通信设备定位方法及相关设备。
背景技术
移动定位技术是指无线通信设备借助无线通信技术，获取移动用户的空间位置信息。移动定位技术的基本原理是：移动目标通过与多个已知坐标位置的固定基站(地面或空中)进行交互，获得相应测量参数后，利用适当的处理方法获得移动目标在空间中的位置。目前，当需要测量两个通信设备之间的相对位置时，先需要通过多个已知坐标位置的固定基站(地面或空中)测量得到两个通信设备的绝对位置，再通过两个通信设备的绝对位置确定两个通信设备之间的相对位置，以致增加了通信设备间相对位置的测量时延。
发明内容
本发明实施例公开了一种通信设备定位方法及相关设备，用于减少通信设备间相对位置的测量时延。
第一方面公开一种通信设备定位方法，第一通信设备向第二通信设备发送第一定位信号(Positioning Reference Signal，PRS)，以及向第二通信设备发送包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息的控制信息，第一PRS和控制信息可以指示第二通信设备根据该资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置。由于两个通信设备之间可以直接通过传输PRS来测量两个通信设备间的相对位置，而不需要通过固定基站，因此，可以减少通信设备间相对位置的测量时延；此外，对于无网络覆盖场景，比如隧道或者高架桥等场景下，可以通过通信设备间的相对定位提高定位精度。其中，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS。
在一个实施例中，控制信息还可以包括扰码信息，第一通信设备可以根据该扰码信息生成第一初始值，并根据第一初始值生成第一PRS。第二通信设备可以根据该扰码信息生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。由于不同通信设备的扰码信息不同，因此，接收信息的通信设备可以通过扰码信息区分不同通信设备发出的PRS信号。
在一个实施例中，第一通信设备和第二通信设备属于同一群组，第一通信设备可以根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第一初始值，以及根据第一初始值生成第一PRS。第二通信设备可以根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。由于通信 设备属于同一组群，它们之间传输的PRS只能被属于同一组群内的通信设备识别，组外通信设备无法识别，因此，可以提高定位的安全性。
在一个实施例中，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数。第二通信设备可以根据该资源位置接收M个目标PRS，根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置得到M个相对位置，以及根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置，以便可以通过多个PRS测量通信设备间的相对位置。通过多个天线传输PRS，可以增加接收通信设备测量信道的多样性，从而提高通信设备间相对位置的测量精度。此外，基于发送通信设备M个发送天线分布式的拓扑，接收通信设备可以测量与发送通信设备各个天线的距离，从而获得发送通信设备的空间位置信息，比如宽度、高度、长度等。其中，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交。
在一个实施例中，控制信息还可以包括第一通信设备的发射天线数量M。
在一个实施例中，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
在一个实施例中，第一通信设备还可以向第二通信设备发送数据，控制信息还可以包括用于指示该数据的信息，用于发送该数据的资源与用于发送第一PRS的资源相互正交，该数据和控制信息可以指示第二通信设备根据该信息处理该数据得到目标数据，以便两个通信设备传输PRS的同时可以传输数据。
第二方面公开一种通信设备，该通信设备包括用于执行第一方面或第一方面的任一种可能实现方式所提供的通信设备定位方法的单元。
第三方面公开一种通信设备，该通信设备包括处理器、存储器和收发器，存储器用于存储程序代码，处理器用于执行程序代码，收发器用于与其它通信设备进行通信。当处理器执行存储器存储的程序代码时，使得处理器执行第一方面或第一方面的任一种可能实现方式所公开的通信设备定位方法。
第四方面公开一种可读存储介质，该可读存储介质存储了通信设备用于执行第一方面或第一方面的任一种可能实现方式所公开的通信设备定位方法的程序代码。
第五方面公开一种通信设备定位方法，第二通信设备接收第一通信设备发送的包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息的控制信息，根据该资源位置接收第二PRS，以及根据第二PRS测量第一通信设备与第二通信设备之间的相对位置。由于两个通信设备之间可以直接通过传输PRS来测量两个通信设备间的相对位置，而不需要通过固定基站，因此，可以减少通信设备间相对位置的测量时延；此外，对于无网络覆盖场景，比如隧道或者高架桥等场景下，可以通过通信设备间的相对定位提高定位精度。其中，第二PRS是第一PRS经过信道传输后被所第二通信设备接收到的PRS。
在一个实施例中，控制信息还可以包括扰码信息，第二通信设备可以根据该扰码信息生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。由于不同通信设备的扰码信息不同，因此，接收 信息的通信设备可以通过扰码信息区分不同通信设备发出的PRS信号。
在一个实施例中，第一通信设备和第二通信设备属于同一群组，第二通信设备可以根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。由于通信设备属于同一组群，它们之间传输的PRS只能被属于同一组群内的通信设备识别，组外通信设备无法识别，因此，可以提高定位的安全性。
在一个实施例中，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数。第二通信设备可以根据该资源位置接收M个目标PRS，根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置以获得M个相对位置，以及根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置。通过多个天线传输PRS，可以增加接收通信设备测量信道的多样性，从而可以提高通信设备间相对位置的测量精度。此外，基于发送通信设备M个发送天线分布式的拓扑，接收通信设备可以测量与发送通信设备各个天线的距离，从而获得发送通信设备的空间位置信息，如宽度、高度、长度等。其中，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交。
在一个实施例中，控制信息还可以包括第一通信设备的发射天线数量M。
在一个实施例中，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
在一个实施例中，第二通信设备接收第一通信设备发送的数据，控制信息还可以包括用于指示该数据的信息，用于传输该数据的资源与用于传输第一PRS的资源相互正交，以及根据该信息处理该数据得到目标数据，以便两个通信设备传输PRS的同时可以传输数据。
第六方面公开一种通信设备，该通信设备包括用于执行第五方面或第五方面的任一种可能实现方式所提供的通信设备定位方法的单元。
第七方面公开一种通信设备，该通信设备包括处理器、存储器和收发器，存储器用于存储程序代码，处理器用于执行程序代码，收发器用于与其它通信设备进行通信。当处理器执行存储器存储的程序代码时，使得处理器执行第五方面或第五方面的任一种可能实现方式所公开的通信设备定位方法。
第八方面公开一种可读存储介质，该可读存储介质存储了通信设备用于执行第一方面或第五方面的任五种可能实现方式所公开的通信设备定位方法的程序代码。
附图说明
图1是本发明实施例公开的一种V2X的示意图；
图2是本发明实施例公开的一种AOA定位的原理示意图；
图3是本发明实施例公开的一种通信设备定位方法的流程示意图；
图4是本发明实施例公开的另一种通信设备定位方法的流程示意图；
图5是本发明实施例公开的又一种通信设备定位方法的流程示意图；
图6是本发明实施例公开的另一种AOA定位的原理示意图；
图7是本发明实施例公开的一种通信设备的结构示意图；
图8是本发明实施例公开的另一种通信设备的结构示意图；
图9是本发明实施例公开的又一种通信设备的结构示意图；
图10是本发明实施例公开的又一种通信设备的结构示意图。
具体实施方式
本发明实施例公开了一种通信设备定位方法及相关设备，用于减少通信设备间相对位置的测量时延。以下分别进行详细说明。
为了更好地理解本发明实施例，下面先对本发明实施例的应用场景进行描述。在本发明实施例中，随着通信需求的增加，第五代通信概念-万物互联已逐渐走入人们的视野。在第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)提出的长期演进(Long Term Evolution，LTE)技术的网络下，车辆与任何事物之间进行通信的车联网(VehicleToEverything，V2X)技术被提出。请参阅图1，图1是本发明实施例公开的一种V2X的示意图，如图1所示，V2X包括车与车(Vehicle to Vehicle，V2V)的通信、车与行人(Vehicle to Pedestrian，V2P)的通信、车与基础设施(Vehicle to Infrastructure，V2I)的通信、车与网络(Vehicle to Network，V2N)的通信。V2X通信针对以车辆为代表的高速设备，是未来对定位精度要求非常高的场景下应用的基础技术和关键技术，如智能汽车、自动驾驶、智能交通运输系统等场景。V2X通信的应用场景决定了传统移动定位技术中的定位精度已经不满足要求，为安全考虑，智能驾驶、远程驾驶等应用场景要求定位精度必须在1米以下。LTE V2X通信可以支持有网络覆盖和无网络覆盖的通信场景，现阶段的LTE V2X定位还不能有效的支持，特别V-UE之间的相对定位需求。随着5G NR技术在3GPP标准组织中的开发，5G新无线(New Radio，NR)V2X也将进一步发展，比如可以支持更低的定位时延，更精准的用户定位服务，以满足更加广泛的应用场景需求。
现有基于网络的定位技术主要包括到达时间差定位技术、角度到达(Arrival of Angle，AOA)定位技术和增强型小区身份定位技术三种。请参阅图2，图2是本发明实施例公开的一种AOA定位的原理示意图。如图2所示，A为一个PRS发射源，B和C分别为两个距离已知的信号接收器，分别计算得到B的接收到达角度和C的接收到达角度，并计算B的接收到达角度与C的接收到达角度的差值θ，在已知BC边长的情况下，可以计算得到A到BC两点的垂直距离。可以将AOA定位技术应用到车辆相对定位的场景，假定A为前车的一个天线，那么后车的两个分布在车头左右两侧的天线就是B和C，在前述方法下，即可得到车辆之间的相对位置，左右定位亦是相同方法。在一定的角度上，可能同时定位车辆之间的左右和前后相对距离，而且两者之间的距离越近测量的精度越高。
请参阅图3，图3是本发明实施例公开的一种通信设备定位方法的流程示意图。其中，该通信设备定位方法是从第一通信设备和第二通信设备的角度来描述的。如图3所示，该通信设备定位方法可以包括以下步骤。
301、第一通信设备向第二通信设备发送第一PRS。
本实施例中，当第一通信设备需要测量第一通信设备与第二通信设备之间的相对位置，或第一通信设备接收到用于测量第一通信设备与第二通信设备之间的相对位置的测量指令 时，将向第二通信设备发送第一PRS，第一PRS可以为导频序列。
302、第一通信设备向第二通信设备发送包括第一PRS的资源位置的控制信息。
本实施例中，第一通信设备向第二通信设备发送第一PRS的同时，还向第二通信设备发送控制信息，控制信息可以包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息，第一PRS的资源位置即第一通信设备向第二通信设备发送第一PRS时所用的资源位置。其中，当控制信息包括指示信息时，可以表明第一通信设备必定向第二通信设备发送了PRS；也可以表明需要根据指示信息进一步判断第一通信设备是否向第二通信设备发送第一PRS。其中，控制信息可以由侧行链路控制(Sidelink Assignment，SA)信息增加一些比特来组成。可以增加1个比特用于描述指示信息，可以认为当这个比特上的值为1时，表明第一通信设备向第二通信设备发送了第一PRS，当这个比特上的值为0时，表明第一通信设备未向第二通信设备发送第一PRS，反之亦然。可以增加log 2K比特用于描述第一PRS的资源位置，K表示资源位置的种类数。
303、第二通信设备根据第一PRS的资源位置接收第二PRS。
本实施例中，第二通信设备接收到第一通信设备发送的控制信息之后，将根据控制信息包括的指示信息判断第一通信设备是否向第二通信设备发送第一PRS，当指示信息指示第一通信设备向第二通信设备发送了第一PRS时，将根据第一PRS的资源位置接收第二PRS，即从第一PRS的资源位置接收第二PRS。其中，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS。
304、第二通信设备根据第二PRS测量第一通信设备与第二通信设备之间的相对位置。
在一个实施例中，控制信息还可以包括扰码信息，请参阅图4，图4是本发明实施例公开的另一种通信设备定位方法的流程示意图。如图4所示，在步骤301之前，该通信设备定位方法还可以包括以下步骤：
305、第一通信设备根据扰码信息生成第一初始值，并根据第一初始值生成第一PRS。
本实施例中，当第一通信设备需要测量第一通信设备与第二通信设备之间的相对位置，或第一通信设备接收到用于测量第一通信设备与第二通信设备之间的相对位置的测量指令时，可以先根据扰码信息生成第一初始值，并根据第一初始值生成第一PRS。
本实施例中，步骤304可以包括：第二通信设备根据该扰码信息生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。其中，第一初始值和第二初始值相同，第三PRS与第一PRS相同。第一初始值和第二初始值可以表示如下：
Figure PCTCN2019078983-appb-000001
其中，c init为第一初始值和第二初始值，
Figure PCTCN2019078983-appb-000002
为扰码信息，n s为时隙编号，v为符号索引(symbol index)。可见，第一初始值和第二初始值是
Figure PCTCN2019078983-appb-000003
n s和v的函数。第一初始值和第二初始值的一种表现形式如下：
Figure PCTCN2019078983-appb-000004
其中，mod为求余数，即mod前面的数除以mod后面的数的余数，N cp为循环前缀(Cyclic Prefix，CP)的模式，当N cp为1时，表明CP为正常CP，当N cp为0时，表明CP为超长CP。
在一个实施例中，高速运行的车队中，各个车辆之间的相对位置需要固定，可能不希望不属于车队的车辆穿插进来。在这种场景下，即第一通信设备和第二通信设备属于同一群组的场景下，请参阅图5，图5是本发明实施例公开的又一种通信设备定位方法的流程示意图。如图5所示，在步骤301之前，该通信设备定位方法还可以包括以下步骤：
305、第一通信设备根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第一初始值，并根据第一初始值生成第一PRS。
本实施例中，当第一通信设备需要测量第一通信设备与第二通信设备之间的相对位置，或第一通信设备接收到用于测量第一通信设备与第二通信设备之间的相对位置的测量指令时，第一通信设备可以先根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第一初始值，并根据第一初始值生成第一PRS。
本实施例中，步骤304可以包括：第二通信设备根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。其中，第一初始值和第二初始值相同，第三PRS与第一PRS相同。第一初始值和第二初始值可以表示如下：
Figure PCTCN2019078983-appb-000005
其中，c init为第一初始值和第二初始值，G RNTI为第一通信设备所在群组的组号，
Figure PCTCN2019078983-appb-000006
为第一通信设备在所在群组中的编号，n s为时隙编号，v为符号索引，可见，第一初始值和第二初始值是G RNTI、
Figure PCTCN2019078983-appb-000007
n s和v的函数。其中，第一初始值和第二初始值的一种表现形式如下：
Figure PCTCN2019078983-appb-000008
每个组群中存在一个管理者，由管理者配置组内成员是否发送PRS。当管理者发送的测量指令由组播信息承载时，组内成员接收到信息之后，将按照组内编号以默认的时分复用(Time Division Multiplexing，TDM)或频分复用(Frequency Division Multiplexing，FDM)的方式顺序发送PRS，组内成员发送PRS所占用的资源可由管理者预先申请。当管理者发送的测量指令由单播承载时，接收组员在管理者原先申请的某个时频资源上发送PRS。
在一个实施例中，天线可以以分布式形态分布在通信设备四周，这就为以AOA定位技术的方式实现通信设备之间的相对定位提供了可能。请参阅图6，图6是本发明实施例公开的另一种AOA定位的原理示意图。如图6所示，前通信设备的两个发送天线A和D分别发送不同的PRS，B和C是后通信设备的两个接收天线，可以分别计算出A和D到达BC的垂直距离，当后通信设备能够确定出A和D属于同一通信设备时，不仅可以校准通信设备间的距离， 而且还可以测量出前通信设备的宽度。在此场景下，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数。步骤303第二通信设备根据第一PRS的资源位置接收第二PRS可以为：第二通信设备根据该资源位置接收M个目标PRS，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交。步骤304可以包括：第二通信设备根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置以获得M个相对位置，以及根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置。每个天线发送的PRS可以表示如下：
r p＝r*e -j*2π*p/2E
其中，p表示天线的编号，r p表示编号为p的天线的PRS的导频序列，r为根据伪随机序列生成的原始导频序列，两个天线的导频序列之间相互正交。一个实施例中，控制信息还可以包括第一通信设备的发射天线数量M，此时上述公式中的E为M，可以在SA信息中增加x比特用于描述M，x可以log 2M，例如：当M为16时，x为4。一个实施例中，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量，即第一通信设备和第二通信设备所在系统默认的通信设备的最大发射天线数量，此时上述公式中的E为N。
在一个实施例中，第一通信设备向第二通信设备发送第一PRS和控制信息的同时，可以向第二通信设备发送数据，此时，控制信息还可以包括用于指示该数据的信息，用于发送该数据的资源与用于发送第一PRS的资源相互正交。第二通信设备接收到第一通信设备发送的数据之后，将根据该信息处理该数据，以获得目标数据。
请参阅图7，图7是本发明实施例公开的一种通信设备的结构示意图。其中，该通信设备为图3-图5中的第一通信设备。如图7所示，该通信设备可以包括：
通信单元701，用于向第二通信设备发送PRS；
通信单元701，还用于向第二通信设备发送控制信息，控制信息包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息，第一PRS和控制信息用于指示第二通信设备根据该资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS。
作为一种可能的实施方式，控制信息还可以包括扰码信息，该通信设备还可以包括：
生成单元702，用于根据通信单元701接收的扰码信息生成第一初始值；
生成单元702，还用于根据第一初始值生成第一PRS；
第二通信设备根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据该扰码信息生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一通信设备和第二通信设备属于同一群组，该通信设备还可以包括：
生成单元702，用于根据第一通信设备所在群组的组号以及第一通信设备在所在群组中 的编号生成第一初始值；
生成单元702，还用于根据第一初始值生成第一PRS；
第二通信设备根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数；
第二通信设备根据该资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据该资源位置接收M个目标PRS，根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置，以获得M个相对位置，以及根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交。
作为一种可能的实施方式，控制信息还可以包括第一通信设备的发射天线数量M。
作为一种可能的实施方式，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
作为一种可能的实施方式，通信单元701，还用于向第二通信设备发送数据，控制信息还可以包括用于指示该数据的信息，用于发送该数据的资源与用于发送第一PRS的资源相互正交，该数据和控制信息用于指示第二通信设备根据该信息处理该数据，以获得目标数据。
请参阅图8，图8是本发明实施例公开的另一种通信设备的结构示意图。其中，该通信设备为图3-图5中的第一通信设备。如图8所示，该通信设备可以包括处理器801、存储器802、收发器803和总线804。处理器801可以是一个通用中央处理器(CPU)，多个CPU，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。存储器802可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器802可以是独立存在，总线804与处理器801相连接。存储器802也可以和处理器801集成在一起。总线804可包括一通路，在上述组件之间传送信息。收发器803可以为收发天线，也可以为其他收发器件。其中：
收发器803，用于向第二通信设备发送第一定位信号PRS；
收发器803，还用于向第二通信设备发送控制信息，控制信息包括第一PRS的资源位置 和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息，第一PRS和控制信息用于指示第二通信设备根据该资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS。
作为一种可能的实施方式，控制信息还可以包括扰码信息，存储器802中存储有一组程序代码，处理器801用于调用存储器802中存储的程序代码执行以下操作：
根据该扰码信息生成第一初始值；
根据第一初始值生成第一PRS；
第二通信设备根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据该扰码信息生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一通信设备和第二通信设备属于同一群组，处理器801还用于调用存储器802中存储的程序代码执行以下操作：
根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第一初始值；
根据第一初始值生成第一PRS；
第二通信设备根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值，根据第二初始值生成第三PRS，以及根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一PRS包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数；
第二通信设备根据资源位置接收第二PRS，并根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：第二通信设备根据该资源位置接收M个目标PRS，根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置，以获得M个相对位置，以及根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交。
作为一种可能的实施方式，控制信息还可以包括第一通信设备的发射天线数量M。
作为一种可能的实施方式，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
作为一种可能的实施方式，收发器803，还用于向第二通信设备发送数据，控制信息还包括用于指示该数据的信息，用于发送该数据的资源与用于发送第一PRS的资源相互正交，该数据和控制信息用于指示第二通信设备根据该信息处理该数据，以获得目标数据。
其中，步骤305可以由通信设备中的处理器801和存储器802来执行，步骤301-302可以由通信设备中的收发器803来执行。
其中，生成单元702可以由通信设备中的处理器801和存储器802来实现，通信单元701可以由通信设备中的收发器803来实现。
请参阅图9，图9是本发明实施例公开的又一种通信设备的结构示意图。其中，该通信设备为图3-图5中的第二通信设备。如图9所示，该通信设备可以包括：
通信单元901，用于接收第一通信设备发送的控制信息，控制信息可以包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息；
通信单元901，还用于根据该资源位置接收第二PRS，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS；
测量单元902，用于根据通信单元901接收的第二PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，控制信息还可以包括扰码信息；
测量单元902具体用于：
根据该扰码信息生成第二初始值；
根据第二初始值生成第三PRS；
根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一通信设备和第二通信设备属于同一群组；
测量单元902具体用于：
根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值；
根据第二初始值生成第三PRS；
根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数；
通信单元901根据该资源位置接收第二PRS包括：
根据该资源位置接收M个目标PRS，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交；
测量单元902具体用于：
根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置，以获得M个相对位置；
根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置。
作为一种可能的实施方式，控制信息还可以包括第一通信设备的发射天线数量M。
作为一种可能的实施方式，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
作为一种可能的实施方式，通信单元901，还用于接收第一通信设备发送的数据，控制信息还可以包括用于指示该数据的信息，用于传输该数据的资源与用于传输第一PRS的资源相互正交；
该通信设备还可以包括：
处理单元903，用于根据通信单元901接收的信息处理该数据，以获得目标数据。
请参阅图10，图10是本发明实施例公开的又一种通信设备的结构示意图。其中，该通 信设备为图3-图5中的第二通信设备。如图10所示，该通信设备可以包括处理器1001、存储器1002、收发器1003和总线1004。处理器1001可以是一个通用中央处理器(CPU)，多个CPU，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。存储器1002可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器1002可以是独立存在，总线1004与处理器1001相连接。存储器1002也可以和处理器1001集成在一起。总线1004可包括一通路，在上述组件之间传送信息。收发器1003可以为收发天线，也可以为其他收发器件。其中：
收发器1003，用于接收第一通信设备发送的控制信息，控制信息可以包括第一PRS的资源位置和用于指示第一通信设备是否向第二通信设备发送第一PRS的指示信息；
收发器1003，还用于根据该资源位置接收第二PRS，第二PRS是第一PRS经过信道传输后被第二通信设备接收到的PRS；
存储器1002中存储有一组程序代码，处理器1001用于调用存储器1002中存储的程序代码执行以下操作：
根据第二PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，控制信息还可以包括扰码信息；
处理器1001根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：
根据该扰码信息生成第二初始值；
根据第二初始值生成第三PRS；
根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一通信设备和第二通信设备属于同一群组；
处理器1001根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：
根据第一通信设备所在群组的组号以及第一通信设备在所在群组中的编号生成第二初始值；
根据第二初始值生成第三PRS；
根据第二PRS和第三PRS测量第一通信设备与第二通信设备之间的相对位置。
作为一种可能的实施方式，第一PRS可以包括M个PRS，M个PRS中的任意两个PRS相互正交，M为第一通信设备的发射天线数量，M为大于或等于2的整数；
收发器1003根据该资源位置接收第二PRS包括：
根据该资源位置接收M个目标PRS，M个目标PRS是M个PRS经过信道传输后被第二通信设备接收到的PRS，M个目标PRS中的任意两个PRS相互正交；
处理器1001根据第二PRS测量第一通信设备与第二通信设备之间的相对位置包括：
根据每个目标PRS测量第一通信设备与第二通信设备之间的相对位置，以获得M个相对位置；
根据M个相对位置确定第一通信设备与第二通信设备之间的目标相对位置。
作为一种可能的实施方式，控制信息还可以包括第一通信设备的发射天线数量M。
作为一种可能的实施方式，M为小于或等于N的整数，N为预设的通信设备的最大发射天线数量。
作为一种可能的实施方式，收发器1003，还用于接收第一通信设备发送的数据，控制信息还可以包括用于指示该数据的信息，用于传输该数据的资源与用于传输第一PRS的资源相互正交；
处理器1001还用于调用存储器1002中存储的程序代码执行以下操作：
根据该信息处理该数据，以获得目标数据。
其中，步骤304和根据信息处理数据的步骤可以由通信设备中的处理器1001和存储器1002来执行，步骤303、接收控制信息和数据的步骤可以由通信设备中的收发器1003来执行。
其中，测量单元902和处理单元903可以由通信设备中的处理器1001和存储器1002来实现，通信单元901可以由通信设备中的收发器1003来实现。
本发明实施例还公开了一种可读存储介质，该可读存储介质存储了通信设备用于执行图3-图5所示的通信设备定位方法的程序代码。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中，通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (28)

  1. 一种通信设备定位方法，其特征在于，包括：
    第一通信设备向第二通信设备发送第一定位信号PRS；
    所述第一通信设备向所述第二通信设备发送控制信息，所述控制信息包括所述第一PRS的资源位置和用于指示所述第一通信设备是否向所述第二通信设备发送所述第一PRS的指示信息，所述第一PRS和所述控制信息用于指示所述第二通信设备根据所述资源位置接收第二PRS，并根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，所述第二PRS是所述第一PRS经过信道传输后被所述第二通信设备接收到的PRS。
  2. 根据权利要求1所述的方法，其特征在于，所述控制信息还包括扰码信息，所述方法还包括：
    所述第一通信设备根据所述扰码信息生成第一初始值；
    所述第一通信设备根据所述第一初始值生成第一PRS；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：所述第二通信设备根据所述扰码信息生成第二初始值，根据所述第二初始值生成第三PRS，以及根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  3. 根据权利要求1所述的方法，其特征在于，所述第一通信设备和所述第二通信设备属于同一群组，所述方法还包括：
    所述第一通信设备根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第一初始值；
    所述第一通信设备根据所述第一初始值生成第一PRS；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：所述第二通信设备根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第二初始值，根据所述第二初始值生成第三PRS，以及根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  4. 根据权利要求1所述的方法，其特征在于，所述第一PRS包括M个PRS，所述M个PRS中的任意两个PRS相互正交，所述M为所述第一通信设备的发射天线数量，所述M为大于或等于2的整数；
    所述第二通信设备根据所述资源位置接收第二PRS，并根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：所述第二通信设备根据所述资源位置接收M个目标PRS，根据每个所述目标PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，以获得M个相对位置，以及根据所述M个相对位置确定所述第一通信设备与所述第二通信设备之间的目标相对位置，所述M个目标PRS是所述M个PRS经过信道传输后被所述第二通信设备接收到的PRS，所述M个目标PRS中的任意两个PRS相互正交。
  5. 根据权利要求4所述的方法，其特征在于，所述控制信息还包括所述第一通信设备的发射天线数量M。
  6. 根据权利要求4所述的方法，其特征在于，所述M为小于或等于N的整数，所述N为预设的通信设备的最大发射天线数量。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述方法还包括：
    所述第一通信设备向所述第二通信设备发送数据，所述控制信息还包括用于指示所述数据的信息，用于发送所述数据的资源与用于发送所述第一PRS的资源相互正交，所述数据和所述控制信息用于指示所述第二通信设备根据所述信息处理所述数据，以获得目标数据。
  8. 一种通信设备定位方法，其特征在于，包括：
    第二通信设备接收第一通信设备发送的控制信息，所述控制信息包括第一PRS的资源位置和用于指示所述第一通信设备是否向所述第二通信设备发送所述第一PRS的指示信息；
    所述第二通信设备根据所述资源位置接收第二PRS，所述第二PRS是所述第一PRS经过信道传输后被所述第二通信设备接收到的PRS；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  9. 根据权利要求8所述的方法，其特征在于，所述控制信息还包括扰码信息；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：
    所述第二通信设备根据所述扰码信息生成第二初始值；
    所述第二通信设备根据所述第二初始值生成第三PRS；
    所述第二通信设备根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  10. 根据权利要求8所述的方法，其特征在于，所述第一通信设备和所述第二通信设备属于同一群组；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：
    所述第二通信设备根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第二初始值；
    所述第二通信设备根据所述第二初始值生成第三PRS；
    所述第二通信设备根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  11. 根据权利要求8所述的方法，其特征在于，所述第一PRS包括M个PRS，所述M个PRS中的任意两个PRS相互正交，所述M为所述第一通信设备的发射天线数量，所述M为大于或等于2的整数；
    所述第二通信设备根据所述资源位置接收第二PRS包括：
    所述第二通信设备根据所述资源位置接收M个目标PRS，所述M个目标PRS是所述M个PRS经过信道传输后被所述第二通信设备接收到的PRS，所述M个目标PRS中的任意两个PRS相互正交；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：
    所述第二通信设备根据每个所述目标PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，以获得M个相对位置；
    所述第二通信设备根据所述M个相对位置确定所述第一通信设备与所述第二通信设备之间的目标相对位置。
  12. 根据权利要求11所述的方法，其特征在于，所述控制信息还包括所述第一通信设备的发射天线数量M。
  13. 根据权利要求11所述的方法，其特征在于，所述M为小于或等于N的整数，所述N为预设的通信设备的最大发射天线数量。
  14. 根据权利要求8-13任一项所述的方法，其特征在于，所述方法还包括：
    所述第二通信设备接收所述第一通信设备发送的数据，所述控制信息还包括用于指示所述数据的信息，用于传输所述数据的资源与用于传输所述第一PRS的资源相互正交；
    所述第二通信设备根据所述信息处理所述数据，以获得目标数据。
  15. 一种通信设备，其特征在于，所述通信设备为第一通信设备，包括：
    通信单元，用于向第二通信设备发送PRS；
    所述通信单元，还用于向所述第二通信设备发送控制信息，所述控制信息包括所述第一PRS的资源位置和用于指示所述第一通信设备是否向所述第二通信设备发送所述第一PRS的指示信息，所述第一PRS和所述控制信息用于指示所述第二通信设备根据所述资源位置接收第二PRS，并根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，所述第二PRS是所述第一PRS经过信道传输后被所述第二通信设备接收到的PRS。
  16. 根据权利要求15所述的通信设备，其特征在于，所述控制信息还包括扰码信息，所述通信设备还包括：
    生成单元，用于根据所述扰码信息生成第一初始值；
    所述生成单元，还用于根据所述第一初始值生成第一PRS；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间 的相对位置包括：所述第二通信设备根据所述扰码信息生成第二初始值，根据所述第二初始值生成第三PRS，以及根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  17. 根据权利要求15所述的通信设备，其特征在于，所述第一通信设备和所述第二通信设备属于同一群组，所述通信设备还包括：
    生成单元，用于根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第一初始值；
    所述生成单元，还用于根据所述第一初始值生成第一PRS；
    所述第二通信设备根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：所述第二通信设备根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第二初始值，根据所述第二初始值生成第三PRS，以及根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  18. 根据权利要求15所述的通信设备，其特征在于，所述第一PRS包括M个PRS，所述M个PRS中的任意两个PRS相互正交，所述M为所述第一通信设备的发射天线数量，所述M为大于或等于2的整数；
    所述第二通信设备根据所述资源位置接收第二PRS，并根据所述第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置包括：所述第二通信设备根据所述资源位置接收M个目标PRS，根据每个所述目标PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，以获得M个相对位置，以及根据所述M个相对位置确定所述第一通信设备与所述第二通信设备之间的目标相对位置，所述M个目标PRS是所述M个PRS经过信道传输后被所述第二通信设备接收到的PRS，所述M个目标PRS中的任意两个PRS相互正交。
  19. 根据权利要求18所述的通信设备，其特征在于，所述控制信息还包括所述第一通信设备的发射天线数量M。
  20. 根据权利要求18所述的通信设备，其特征在于，所述M为小于或等于N的整数，所述N为预设的通信设备的最大发射天线数量。
  21. 根据权利要求15-20任一项所述的通信设备，其特征在于，所述通信单元，还用于向所述第二通信设备发送数据，所述控制信息还包括用于指示所述数据的信息，用于发送所述数据的资源与用于发送所述第一PRS的资源相互正交，所述数据和所述控制信息用于指示所述第二通信设备根据所述信息处理所述数据，以获得目标数据。
  22. 一种通信设备，其特征在于，所述通信设备为第二通信设备，包括：
    通信单元，用于接收第一通信设备发送的控制信息，所述控制信息包括第一PRS的资 源位置和用于指示所述第一通信设备是否向所述第二通信设备发送所述第一PRS的指示信息；
    所述通信单元，还用于根据所述资源位置接收第二PRS，所述第二PRS是所述第一PRS经过信道传输后被所述第二通信设备接收到的PRS；
    测量单元，用于根据所述通信单元接收的第二PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  23. 根据权利要求22所述的通信设备，其特征在于，所述控制信息还包括扰码信息；
    所述测量单元具体用于：
    根据所述扰码信息生成第二初始值；
    根据所述第二初始值生成第三PRS；
    根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  24. 根据权利要求22所述的通信设备，其特征在于，所述第一通信设备和所述第二通信设备属于同一群组；
    所述测量单元具体用于：
    根据所述第一通信设备所在群组的组号以及所述第一通信设备在所在群组中的编号生成第二初始值；
    根据所述第二初始值生成第三PRS；
    根据所述第二PRS和所述第三PRS测量所述第一通信设备与所述第二通信设备之间的相对位置。
  25. 根据权利要求22所述的通信设备，其特征在于，所述第一PRS包括M个PRS，所述M个PRS中的任意两个PRS相互正交，所述M为所述第一通信设备的发射天线数量，所述M为大于或等于2的整数；
    所述通信单元根据所述资源位置接收第二PRS包括：
    根据所述资源位置接收M个目标PRS，所述M个目标PRS是所述M个PRS经过信道传输后被所述第二通信设备接收到的PRS，所述M个目标PRS中的任意两个PRS相互正交；
    所述测量单元具体用于：
    根据每个所述目标PRS测量所述第一通信设备与所述第二通信设备之间的相对位置，以获得M个相对位置；
    根据所述M个相对位置确定所述第一通信设备与所述第二通信设备之间的目标相对位置。
  26. 根据权利要求25所述的通信设备，其特征在于，所述控制信息还包括所述第一通信设备的发射天线数量M。
  27. 根据权利要求25所述的通信设备，其特征在于，所述M为小于或等于N的整数，所述N为预设的通信设备的最大发射天线数量。
  28. 根据权利要求22-27任一项所述的通信设备，其特征在于，所述通信单元，还用于接收所述第一通信设备发送的数据，所述控制信息还包括用于指示所述数据的信息，用于传输所述数据的资源与用于传输所述第一PRS的资源相互正交；
    所述通信设备还包括：
    处理单元，用于根据所述通信单元接收的信息处理所述数据，以获得目标数据。
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