WO2020037748A1 - 差分数据播发方法及装置、接收方法及装置、存储介质 - Google Patents

差分数据播发方法及装置、接收方法及装置、存储介质 Download PDF

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Publication number
WO2020037748A1
WO2020037748A1 PCT/CN2018/106368 CN2018106368W WO2020037748A1 WO 2020037748 A1 WO2020037748 A1 WO 2020037748A1 CN 2018106368 W CN2018106368 W CN 2018106368W WO 2020037748 A1 WO2020037748 A1 WO 2020037748A1
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Prior art keywords
differential data
differential
correction signal
processor
cell
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PCT/CN2018/106368
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English (en)
French (fr)
Inventor
尹华镜
朱钧
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深圳思凯微电子有限公司
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Publication of WO2020037748A1 publication Critical patent/WO2020037748A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • 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 present invention relates to the field of positioning technology, and in particular, to a method and device for broadcasting differential data, a method and device for receiving, and a storage medium.
  • ground-based augmentation systems systems by providing differential correction signals, to achieve the purpose of improving satellite navigation accuracy, so that the optimized positioning accuracy can range from millimeter level to sub-meter level.
  • the ground-based augmentation system obtains the position coordinates uploaded by the user terminal and is based on a pre-set continuous operation reference station system (Continuous Operational Reference System (CORS) data, get the differential correction signal corresponding to the user terminal, and then send the differential correction signal to the user terminal based on the mobile communication network through the data processing center.
  • CORS Continuous Operational Reference System
  • This differential correction signal transmission method makes the user terminal need to wait There are two steps to uploading the position coordinates and waiting for the differential correction signal to be issued before the differential correction signal can be obtained. On the one hand, there is a delay in acquiring the differential correction signal, and on the other hand, communication resources are occupied.
  • the main purpose of the present invention is to provide a method and device for transmitting differential data, a method and device for receiving, and a storage medium, which are aimed at solving the technical problems of delay in acquiring differential correction signals and occupation of communication resources in the prior art.
  • the present invention provides a method for broadcasting differential data, and the method for broadcasting differential data includes the following steps:
  • the step of obtaining location information of a cell and obtaining a differential correction signal corresponding to the cell based on the location information includes:
  • a virtual reference station VRS technology is used to calculate a differential correction signal corresponding to the cell.
  • the step of controlling the base station of the cell to broadcast the differential correction signal in the form of a broadcast service includes:
  • the present invention further provides a method for receiving differential data.
  • the method for receiving differential data includes the following steps:
  • the step of parsing the broadcast service to obtain a differential correction signal included in the broadcast service includes:
  • the method further includes:
  • the present invention also provides a differential data broadcasting device.
  • the differential data broadcasting device includes: a memory, a processor, and a differential data broadcasting stored on the memory and operable on the processor.
  • the present invention further provides a differential data receiving device.
  • the differential data receiving device includes: a memory, a processor, and differential data receiving stored in the memory and operable on the processor.
  • a program that implements the steps of the differential data receiving method as described above when the differential data receiving program is executed by the processor.
  • the present invention also provides a storage medium, where the differential data broadcasting program is stored on the storage medium, and when the differential data broadcasting program is executed by a processor, implements the steps of the differential data broadcasting method described above .
  • position information of a cell is acquired, and a differential correction signal corresponding to the cell is obtained based on the position information; the differential correction signal is transmitted to the cell, and the base station of the cell is controlled to The differential correction signal is broadcast in the form of a broadcast service.
  • a differential correction signal corresponding to a cell is obtained, and the differential correction signal is broadcast in the form of a broadcast service, so that all user terminals in the local cell can directly obtain a broadcast containing the differential correction signal from the broadcast control channel of the local cell. Services, thereby obtaining a differential correction signal, the user terminal does not need to wait for two steps of uploading the position coordinates and waiting for the differential correction signal to be issued, which reduces the delay for the user terminal to acquire the differential correction signal and the occupation of communication resources.
  • FIG. 1 is a schematic structural diagram of a differential data broadcasting device in a hardware operating environment according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a differential data receiving device in a hardware operating environment according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a first embodiment of a method for broadcasting differential data according to the present invention
  • FIG. 4 is a schematic structural diagram of a differential data playing system in an embodiment of a differential data broadcasting method according to the present invention.
  • FIG. 5 is a schematic diagram of a differential data broadcasting scenario for a multi-zone cell in an embodiment of a method for broadcasting differential data according to the present invention
  • FIG. 6 is a schematic diagram of a format of a differential correction signal corresponding to a cell in an embodiment of a method for transmitting differential data according to the present invention
  • FIG. 7 is a schematic flowchart of a first embodiment of a differential data receiving method according to the present invention.
  • FIG. 1 is a schematic structural diagram of a differential data broadcasting device in a hardware operating environment according to an embodiment of the present invention.
  • the differential data broadcasting apparatus may include a processor 1001, for example, a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002.
  • the communication bus 1002 is used to implement connection and communication between these components.
  • the user interface 1003 may include a display, an input unit such as a keyboard, and the optional user interface 1003 may further include a standard wired interface and a wireless interface.
  • the network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).
  • the memory 1005 may be a high-speed RAM memory or a non-volatile memory. memory), such as disk storage.
  • the memory 1005 may optionally be a storage device independent of the foregoing processor 1001.
  • the structure of the differential data broadcasting device shown in FIG. 1 does not constitute a limitation on the differential data broadcasting device, and may include more or fewer components than shown in the figure, or some components may be combined, or different Of the components.
  • the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a differential data broadcasting program.
  • the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server;
  • the user interface 1003 is mainly used to connect to the client (user) and perform data communication with the client;
  • the processor 1001 can be used to call the differential data broadcasting program stored in the memory 1005 and perform the following operations:
  • processor 1001 may call the differential data broadcasting program stored in the memory 1005, and further perform the following operations:
  • a virtual reference station VRS technology is used to calculate a differential correction signal corresponding to the cell.
  • processor 1001 may call the differential data broadcasting program stored in the memory 1005, and further perform the following operations:
  • FIG. 2 is a schematic structural diagram of a differential data receiving device in a hardware operating environment according to an embodiment of the present invention.
  • the differential data receiving apparatus may include a processor 2001, such as a CPU, a network interface 2004, a user interface 2003, a memory 2005, and a communication bus 2002.
  • the communication bus 2002 is used to implement connection and communication between these components.
  • the user interface 2003 may include a display screen, an input unit such as a keyboard, and the optional user interface 2003 may further include a standard wired interface and a wireless interface.
  • the network interface 2004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).
  • the memory 2005 may be a high-speed RAM memory or a non-volatile memory. memory), such as disk storage.
  • the memory 2005 may optionally be a storage device independent of the foregoing processor 2001.
  • the structure of the differential data receiving device shown in FIG. 2 does not constitute a limitation on the differential data receiving device, and may include more or fewer components than shown in the figure, or combine some components, or be different Of the components.
  • the memory 2005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a differential data receiving program.
  • the network interface 2004 is mainly used to connect to a background server and perform data communication with the background server;
  • the user interface 2003 is mainly used to connect to a client (user) and perform data communication with the client;
  • the processor 2001 can be used to call the differential data receiving program stored in the memory 2005 and perform the following operations:
  • processor 1001 may call the differential data receiving program stored in the memory 1005, and further perform the following operations:
  • processor 1001 may call the differential data receiving program stored in the memory 1005, and further perform the following operations:
  • FIG. 3 is a schematic flowchart of a first embodiment of a method for broadcasting differential data according to the present invention.
  • the method for broadcasting differential data includes:
  • Step S10 Obtain position information of a cell, and obtain a differential correction signal corresponding to the cell based on the position information;
  • a cell refers to an area covered by a base station or a part of the base station (sector antenna) in a cellular mobile communication system. In this area, a mobile station can reliably communicate with the base station through a wireless channel. .
  • the location information of the cell may be the position of the base station in the cell.
  • RTK Real -time kinematic (real-time dynamic) carrier phase difference technology to obtain the differential correction signal corresponding to the cell.
  • VRS Virtual Reference Station technology Stations
  • FKP area correction parameters
  • step S10 includes:
  • a virtual reference station VRS technology is used to calculate a differential correction signal corresponding to the cell.
  • the differential correction signal reported by the reference station around the location point corresponding to the location information is obtained.
  • the base station is ground-based Continuous Operational Reference in augmentation systems (GBAS) System, CORS).
  • GBAS Continuous Operational Reference in augmentation systems
  • CORS Continuous Operational Reference in augmentation systems
  • the virtual reference station VRS technology works by establishing several (more than three) GPS reference stations that operate continuously in a large area (or a city); according to the observations of these GPS reference stations (due to GPS The reference station has long-term observations, so the point coordinate accuracy is very high.) Main error models (such as ionospheric, tropospheric, satellite orbit error models); these errors are removed from the reference station observations during system operation to form "error-free" observations; once a mobile station (E.g. GPS receiver), that is, a virtual reference station is established near the mobile station (a few meters to several tens of meters); the mobile station and the virtual reference station perform carrier phase difference correction.
  • a mobile station (E.g. GPS receiver)
  • a virtual reference station is established near the mobile station (a few meters to several tens of meters)
  • the mobile station and the virtual reference station perform carrier phase difference correction.
  • a differential correction signal corresponding to the cell can be obtained.
  • the position of the base station of the cell is used as the position of the cell, so the number of differential correction signals obtained is one.
  • Step S20 transmitting the differential correction signal to the cell, and controlling a base station of the cell to broadcast the differential correction signal in the form of a broadcast service.
  • the differential correction signal corresponding to the cell is transmitted to the cell, and then the base station controlling the cell broadcasts the differential correction signal in the form of a broadcast service.
  • the Broadcast Multicast Service Center (Broadcast) that controls the MBMS service in mobile communication networks.
  • Multicast Service Centre (BM-SC)
  • BM-SC Multicast Service Centre
  • BM-SC Multicast Service Centre
  • BM-SC Multicast Service Centre
  • FIG. 4 is a schematic structural diagram of a differential data playing system in an embodiment of a differential data broadcasting method according to the present invention.
  • the data processing and control center is responsible for receiving the differential correction signals measured by each CORS station, and according to the position information list prepared in the network planning process, according to the algorithms in VRS technology or FKP technology, based on each The location information of the cell is used to obtain the differential correction signal corresponding to each cell.
  • the data processing and control center encapsulates the differential correction signal and location information of each cell (that is, the differential correction signal of cell 1 is encapsulated with the location information, the differential correction signal of cell 2 is encapsulated with the location information, and the differential of cell 3 is encapsulated.
  • the correction signal is encapsulated with the location information Certainly and sent to the Broadcast Multicast Service Center (BM-SC) in the mobile communication network via the transmission channel.
  • BM-SC Broadcast Multicast Service Center
  • the BM-SC Based on the received information, the BM-SC generates MBMS services corresponding to each cell and It is sent to each cell through the mobile communication core network, and finally the cell base station broadcasts its own MBMS service.
  • position information of a cell is acquired, and a differential correction signal corresponding to the cell is obtained based on the position information; the differential correction signal is transmitted to the cell, and a base station of the cell is controlled
  • the differential correction signal is broadcast in the form of a broadcast service.
  • a differential correction signal corresponding to a cell is obtained, and the differential correction signal is broadcast in the form of a broadcast service, so that all user terminals in the local cell can directly obtain the differential correction signal from the broadcast control channel of the local cell.
  • the user terminal does not need to go through two steps of waiting for the position coordinate upload and waiting for the differential correction signal to be issued, which reduces the delay for the user terminal to acquire the differential correction signal and the occupation of communication resources.
  • the location of the base station of the cell is used as the location information of the cell. If the coverage area of the cell is too large, the user terminal in the cell receives the same differential correction information and will inevitably be caused by its own location There are differences in positioning accuracy. Users who are far away from the base station will have lower positioning accuracy than users who are closer to the base station.
  • a cell may be divided into multiple partitions in advance, and the division of the partitions within the cell may be performed during initial planning to meet the highest positioning accuracy that the system can support (for example, Cm) as the basis, specific to each district due to different geographical conditions and other conditions, the actual measurement results need to determine the size of each partition.
  • Cm positioning accuracy
  • a point is selected from each partition (for example, the midpoint of each partition is selected) as the position of each partition, that is, the cell obtained in step S10.
  • the position information of each segment includes the position information of each partition, and then based on the virtual reference station VRS technology, a differential correction signal corresponding to each partition is obtained.
  • the broadcast service broadcasted by the base station of the cell can include the differential correction signal of each zone.
  • the user terminal obtains the differential correction signal of each zone by parsing the broadcast service, it can select the current signal from the user terminal.
  • the differential correction signal of the nearest partition of the preliminary positioning result corrects the preliminary positioning result and improves the positioning accuracy of the user terminal.
  • FIG. 5 is a schematic diagram of a differential data broadcasting scenario for a multi-zone cell in an embodiment of a differential data broadcasting method according to the present invention.
  • cell A (easily understandable, this scenario can also include cell B, cell C, etc. that are independent of cell A.
  • the MBMS service corresponding to the cell passes through the mobile communication core network (Core Network) to the corresponding cell base stations, and finally the cell base stations broadcast their respective MBMS services.
  • Core Network mobile communication core network
  • Differential correction signals corresponding to all partitions in cell A the corresponding MBMS service A is sent to the base station of cell A, and the base station of cell A broadcasts the MBMS service A; the differential correction signals corresponding to all partitions in cell B correspond to MBMS service B is sent to the base station of cell B, the base station of cell B broadcasts MBMS service B, and so on.
  • FIG. 6 is a schematic diagram of a format of a differential correction signal corresponding to a cell in an embodiment of a differential data broadcasting method according to the present invention.
  • the cell location number is used to indicate to which cell the differential correction signal should be sent, and its format is the same as the location information format in the MBMS service session description sent by BM-SC; the number of partitions is used to indicate the current How many divisions are divided into districts?
  • Division n latitude and longitude coordinates corresponding to the latitude and longitude coordinates of the division.
  • the user terminal judges the location of the division and the distance from the initially determined current position, and then selects the appropriate division difference correction information; the division n difference correction Signal: The content of the differential correction information that meets the relevant standards.
  • FIG. 7 is a schematic flowchart of a first embodiment of a differential data receiving method according to the present invention.
  • the method for receiving differential data includes:
  • Step S30 Obtain a broadcast service of a local cell
  • Step S40 Analyze the broadcast service to obtain a differential correction signal included in the broadcast service.
  • all user terminals can access the broadcast control channel (BCCH) of the MBMS service of the local cell in the same cell and find the broadcast service containing the differential correction signal ( (Referred to as a differential correction signal broadcast service), and demodulating and decoding the differential correction signal broadcast service to obtain a differential correction signal included in the differential correction signal broadcast service.
  • BCCH broadcast control channel
  • step S40 includes:
  • the step of controlling the base station of the cell to broadcast the differential correction signal in the form of a broadcast service includes:
  • the first authority information can be divided into three types: low authority information, medium authority information, and high authority information.
  • the first authority information is low authority information
  • randomly obtain X pieces for example, X takes
  • the differential correction signal dividing a cell into several partitions, and the differential correction signal of the cell refers to the differential correction signal corresponding to each partition.
  • the broadcast service 1 corresponding to the low authority information is generated, and the broadcast service 1 is encrypted according to the encryption method corresponding to the low authority information, and then the base station of the cell is controlled to broadcast Encrypted broadcast service1.
  • the first authority information is medium authority information
  • Y are randomly obtained from the differential correction signal (dividing the cell into several partitions, and the differential correction signal of the cell refers to the differential correction signal corresponding to each partition) (for example, Y takes Half of the number of partitions) as the target differential correction signal, and based on the Y target differential correction signals, the broadcast service 2 corresponding to the medium authority information is generated, and the broadcast service 2 is encrypted according to the encryption method corresponding to the medium authority information, and then the cell Base station broadcasts the encrypted broadcast service 2;
  • a differential correction signal (dividing a cell into several partitions, and the differential correction signal of a cell refers to a differential correction signal corresponding to each partition) is used as a target differential correction signal, and based on the target The differential correction signal generates the broadcast service 3 corresponding to the high-priority information, and encrypts the broadcast service 3 according to the encryption method corresponding to the high-priority information, and then controls the base station of the cell to broadcast the encrypted broadcast service 3.
  • the broadcast control channel of the MBMS service of the cell includes broadcast service 1, broadcast service 2, and broadcast service 3 processed in different encryption methods.
  • the user terminal acquires the broadcast service from the broadcast control channel of the cell base station.
  • the broadcast service 1 can be parsed according to the decryption method corresponding to the low user authority to obtain the broadcast service 1. Included target differential correction signal; if the second permission information of the user terminal is medium user permission, the broadcast service 2 can be analyzed according to the decryption method corresponding to the medium user permission to obtain the target differential correction signal included in the broadcast service 2; if the user The second authority information of the terminal is a high user authority, and the broadcast service 3 can be analyzed according to a decryption method corresponding to the high user authority to obtain a target differential correction signal included in the broadcast service 3. The higher the user's second permission level, the richer the target differential correction information contained in the broadcast service that it can parse, achieving the highest level of positioning accuracy optimization.
  • the method further includes:
  • the approximate position of the user terminal obtained by the ordinary navigation and positioning method is used to establish a positioning solution equation based on the directly received satellite signals to obtain preliminary positioning information G1. If the number of differential correction signals obtained by analysis according to step S40 is only one (cells are not partitioned), the differential correction signals obtained by analysis are used as optimal differential correction signals, and then based on the optimal differential correction signals, The preliminary positioning information is modified to obtain a positioning optimization result of the user terminal. If there are multiple differential correction signals obtained by analyzing according to step S40 (the cell is partitioned, and the differential correction signals obtained by parsing are the differential correction signals corresponding to multiple partitions in the cell), then select the one nearest to the preliminary positioning information. Partitioning, and using the differential correction signal corresponding to the partition as an optimal differential correction signal, and then correcting the preliminary positioning information based on the optimal differential correction signal to obtain a positioning optimization result of the user terminal.
  • the selection mechanism of the optimal differential correction signal is set, which improves the optimization degree of the preliminary positioning information.
  • an embodiment of the present invention further provides a storage medium.
  • the storage medium stores a differential data broadcasting program, and when the differential data broadcasting program is executed by a processor, implements the steps of the differential data broadcasting method described above.
  • the storage medium of the present invention is a computer-readable storage medium.
  • the specific embodiments of the storage medium of the present invention are basically the same as the embodiments of the foregoing differential data broadcasting method, and are not described herein again.
  • an embodiment of the present invention further provides a storage medium, where the storage medium stores a differential data receiving program, and when the differential data receiving program is executed by a processor, implements the steps of the differential data receiving method described above.
  • the storage medium of the present invention is a computer-readable storage medium.
  • the specific embodiments of the storage medium of the present invention are basically the same as the embodiments of the foregoing differential data receiving method, and are not described herein again.
  • the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better.
  • Implementation Based on such an understanding, the technical solution of the present invention in essence or a part that contributes to the existing technology can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM as described above , Magnetic disk, optical disc), including a number of instructions to enable a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present invention.
  • a terminal device which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

一种差分数据播发方法及装置、接收方法及装置、存储介质，差分数据播发方法包括：获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号(S10)；将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号(S20)。以广播业务形式播发该差分修正信号，使得本地小区中的所有用户终端可直接从本地小区的广播控制信道中获取包含有差分修正信号的广播业务，从而获得差分修正信号，用户终端无需经过等待位置坐标上传以及等待差分修正信号下发两个步骤，减少了用户终端获取差分修正信号的延迟以及对通信资源的占用。

Description

差分数据播发方法及装置、接收方法及装置、存储介质
技术领域
本发明涉及定位技术领域，尤其涉及差分数据播发方法及装置、接收方法及装置、存储介质。
背景技术
目前，地基增强系统（ground-based augmentation systems，GBAS），通过提供差分修正信号，达到提高卫星导航精度的目的，使得优化后的定位精度可以从毫米级至亚米级不等。
通常的做法是，地基增强系统获取用户终端上传的位置坐标，基于预先架设的连续运行参考站系统（Continuous Operational Reference System，CORS）上报的数据，得到用户终端对应的差分修正信号，然后通过数据处理中心基于移动通信网络将差分修正信号发送给用户终端，这种差分修正信号的传输方式，使得用户终端需要经过等待位置坐标上传以及等待差分修正信号下发两个步骤，才能得到差分修正信号，一方面导致获取差分修正信号存在延迟，另一方面导致通信资源被占用。
发明内容
本发明的主要目的在于提供一种差分数据播发方法及装置、接收方法及装置、存储介质，旨在解决现有技术中获取差分修正信号存在延迟以及通信资源被占用的技术问题。
为实现上述目的，本发明提供一种差分数据播发方法，所述差分数据播发方法包括以下步骤：
获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；
将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。
可选的，所述获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号的步骤包括：
获取蜂窝小区的位置信息，获取所述位置信息对应的基准站的差分修正信号；
基于所述位置信息以及差分修正信号，通过虚拟参照站VRS技术，计算得到所述蜂窝小区对应的差分修正信号。
可选的，所述控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号的步骤包括：
基于预置第一权限信息，从所述差分修正信号中获取所述第一权限信息对应的目标差分修正信号；
根据所述目标差分修正信号，生成广播业务；
控制所述蜂窝小区的基站播发所述广播业务。
此外，为实现上述目的，本发明还提供一种差分数据接收方法，所述差分数据接收方法包括以下步骤：
获取本地蜂窝小区的广播业务；
对所述广播业务进行解析，得到所述广播业务包含的差分修正信号。
可选的，所述对所述广播业务进行解析，得到所述广播业务包含的差分修正信号的步骤包括：
获取用户终端的第二权限信息，从所述广播业务中确定所述第二权限信息对应的目标广播业务；
根据所述第二权限信息对所述目标广播业务进行解析，得到所述目标广播业务对应的差分修正信号。
可选的，所述得到所述广播业务包含的差分修正信号的步骤之后，还包括：
获取用户终端的初步定位信息，基于所述初步定位信息从所述差分修正信号中确定最优差分修正信号；
基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。
此外，为实现上述目的，本发明还提供一种差分数据播发装置，所述差分数据播发装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据播发程序，所述差分数据播发程序被所述处理器执行时实现如上所述的差分数据播发方法的步骤。
此外，为实现上述目的，本发明还提供一种差分数据接收装置，所述差分数据接收装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据接收程序，所述差分数据接收程序被所述处理器执行时实现如上所述的差分数据接收方法的步骤。
此外，为实现上述目的，本发明还提供一种存储介质，所述存储介质上存储有差分数据播发程序，所述差分数据播发程序被处理器执行时实现如上所述的差分数据播发方法的步骤。
本发明中，获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。通过本发明，获取蜂窝小区对应的差分修正信号，并以广播业务形式播发该差分修正信号，使得本地小区中的所有用户终端可直接从本地小区的广播控制信道中获取包含有差分修正信号的广播业务，从而获得差分修正信号，用户终端无需经过等待位置坐标上传以及等待差分修正信号下发两个步骤，减少了用户终端获取差分修正信号的延迟以及对通信资源的占用。
附图说明
图1为本发明实施例方案涉及的硬件运行环境的差分数据播发装置结构示意图；
图2为本发明实施例方案涉及的硬件运行环境的差分数据接收装置结构示意图；
图3为本发明差分数据播发方法第一实施例的流程示意图；
图4为本发明差分数据播发方法一实施例中差分数据播放系统的结构示意图；
图5为本发明差分数据播发方法一实施例中针对多分区蜂窝小区的差分数据播发场景示意图；
图6为本发明差分数据播发方法一实施例中蜂窝小区对应的差分修正信号的格式示意图；
图7为本发明差分数据接收方法第一实施例的流程示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示，图1为本发明实施例方案涉及的硬件运行环境的差分数据播发装置结构示意图。
如图1所示，该差分数据播发装置可以包括：处理器1001，例如CPU，网络接口1004，用户接口1003，存储器1005，通信总线1002。其中，通信总线1002用于实现这些组件之间的连接通信。用户接口1003可以包括显示屏（Display）、输入单元比如键盘（Keyboard），可选用户接口1003还可以包括标准的有线接口、无线接口。网络接口1004可选的可以包括标准的有线接口、无线接口（如WI-FI接口）。存储器1005可以是高速RAM存储器，也可以是稳定的存储器（non-volatile memory），例如磁盘存储器。存储器1005可选的还可以是独立于前述处理器1001的存储装置。
本领域技术人员可以理解，图1中示出的差分数据播发装置结构并不构成对差分数据播发装置的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
如图1所示，作为一种计算机存储介质的存储器1005中可以包括操作系统、网络通信模块、用户接口模块以及差分数据播发程序。
在图1所示的差分数据播发装置中，网络接口1004主要用于连接后台服务器，与后台服务器进行数据通信；用户接口1003主要用于连接客户端（用户端），与客户端进行数据通信；而处理器1001可以用于调用存储器1005中存储的差分数据播发程序，并执行以下操作：
获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；
将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。
进一步地，处理器1001可以调用存储器1005中存储的差分数据播发程序，还执行以下操作：
获取蜂窝小区的位置信息，获取所述位置信息对应的基准站的差分修正信号；
基于所述位置信息以及差分修正信号，通过虚拟参照站VRS技术，计算得到所述蜂窝小区对应的差分修正信号。
进一步地，处理器1001可以调用存储器1005中存储的差分数据播发程序，还执行以下操作：
基于预置第一权限信息，从所述差分修正信号中获取所述第一权限信息对应的目标差分修正信号；
根据所述目标差分修正信号，生成广播业务；
控制所述蜂窝小区的基站播发所述广播业务。
如图2所示，图2为本发明实施例方案涉及的硬件运行环境的差分数据接收装置结构示意图。
如图2所示，该差分数据接收装置可以包括：处理器2001，例如CPU，网络接口2004，用户接口2003，存储器2005，通信总线2002。其中，通信总线2002用于实现这些组件之间的连接通信。用户接口2003可以包括显示屏（Display）、输入单元比如键盘（Keyboard），可选用户接口2003还可以包括标准的有线接口、无线接口。网络接口2004可选的可以包括标准的有线接口、无线接口（如WI-FI接口）。存储器2005可以是高速RAM存储器，也可以是稳定的存储器（non-volatile memory），例如磁盘存储器。存储器2005可选的还可以是独立于前述处理器2001的存储装置。
本领域技术人员可以理解，图2中示出的差分数据接收装置结构并不构成对差分数据接收装置的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
如图2所示，作为一种计算机存储介质的存储器2005中可以包括操作系统、网络通信模块、用户接口模块以及差分数据接收程序。
在图2所示的差分数据接收装置中，网络接口2004主要用于连接后台服务器，与后台服务器进行数据通信；用户接口2003主要用于连接客户端（用户端），与客户端进行数据通信；而处理器2001可以用于调用存储器2005中存储的差分数据接收程序，并执行以下操作：
获取本地蜂窝小区的广播业务；
对所述广播业务进行解析，得到所述广播业务包含的差分修正信号。
进一步地，处理器1001可以调用存储器1005中存储的差分数据接收程序，还执行以下操作：
获取用户终端的第二权限信息，从所述广播业务中确定所述第二权限信息对应的目标广播业务；
根据所述第二权限信息对所述目标广播业务进行解析，得到所述目标广播业务对应的差分修正信号。
进一步地，处理器1001可以调用存储器1005中存储的差分数据接收程序，还执行以下操作：
获取用户终端的初步定位信息，基于所述初步定位信息从所述差分修正信号中确定最优差分修正信号；
基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。
参照图3，图3为本发明差分数据播发方法第一实施例的流程示意图。
在一实施例中，所述差分数据播发方法包括：
步骤S10，获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；
本实施例中，蜂窝小区，是指在蜂窝移动通信系统中，其中的一个基站或基站的一部分(扇形天线)所覆盖的区域，在这个区域内移动台可以通过无线信道可靠地与基站进行通信。
本发明一可选实施例中，蜂窝小区的位置信息可以是蜂窝小区中基站的位置。获取位置信息的方式不限，例如通过人工输入的方式、信息传输的方式等。获取到蜂窝小区的位置信息后，可RTK（Real - time kinematic，实时动态）载波相位差分技术，得到蜂窝小区对应的差分修正信号。例如，通过虚拟参考站技术（Virtual Reference Stations，VRS）、区域改正参数（area correction parameters，FKP）技术等得到蜂窝小区对应的差分修正信号。
一可选实施例中，步骤S10包括：
获取蜂窝小区的位置信息，获取所述位置信息对应的基准站的差分修正信号；
基于所述位置信息以及差分修正信号，通过虚拟参照站VRS技术，计算得到所述蜂窝小区对应的差分修正信号。
本实施例中，获取到蜂窝小区的位置信息后，获取该位置信息对应位置点周围的基准站上报的差分修正信号。其中，基准站即地基增强系统（ground-based augmentation systems，GBAS）中的连续运行参考站系统（Continuous Operational Reference System，CORS）。然后基于蜂窝小区的位置信息以及该位置信息对应的基准站的差分修正信号，通过虚拟参照站VRS技术，计算得到蜂窝小区对应的差分修正信号。其中，虚拟参照站VRS技术，工作原理是在某一大区域(或某一城市)内,建立若干个(3个以上)连续运行的GPS基准站;根据这些GPS基准站的观测值(由于GPS基准站有长时间的观测,故点位坐标精度很高)，建立区域内GPS 主要误差模型(如电离层、对流层、卫星轨道等误差模型)；系统运行时将这些误差从基准站的观测值中或去,形成“无误差”的观测值；一旦接收到移动站( 例如GPS接收机)的概略坐标，即在移动站附近(几米到几十米)建立起一个虚拟参考站；移动站与虚拟参考站进行载波相位差分改正。即在本实施例中，基于上述虚拟参照站VRS技术的工作原理，以蜂窝小区的位置作为移动站的位置，便可得到蜂窝小区对应的差分修正信号。本实施例中，以蜂窝小区的基站所在位置，作为蜂窝小区的位置，因此得到的差分修正信号数量为一个。
步骤S20，将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。
本实施例中，得到蜂窝小区对应的差分修正信号后，将该蜂窝小区对应的差分修正信号传输给该蜂窝小区，然后控制该蜂窝小区的基站以广播业务形式播发差分修正信号。例如，控制移动通信网络中负责控制MBMS业务的广播组播业务中心（Broadcast Multicast Service Centre，BM-SC），基于该差分修正信号，生成该蜂窝小区对应的MBMS业务，再控制该蜂窝小区的基站播发该MBMS业务，使得该蜂窝小区覆盖区域中的所有用户可以从广播控制信道上获取该MBMS业务，从而得到MBMS业务中包含的差分修正信号，最终基于该差分修正信号，获取更高精度的定位结果。
参照图4，图4为本发明差分数据播发方法一实施例中差分数据播放系统的结构示意图。如图4所示，数据处理与控制中心负责接收各个CORS站测量得出的差分修正信号，并按照布网规划过程中制定好的位置信息列表，根据VRS技术或FKP技术中的算法，基于各个小区的位置信息，得到各个小区对应的差分修正信号。数据处理与控制中心将各个小区的差分修正信号与位置信息封装在一起（即小区1的差分修正信号与位置信息封装在一起、小区2的差分修正信号与位置信息封装在一起、小区3的差分修正信号与位置信息封装在一起……），通过传输通道发送给移动通信网络中的广播组播业务中心（BM-SC），BM-SC基于接收到的信息，生成各个小区对应的MBMS业务并通过移动通信核心网发送到各个小区，最后小区基站播发各自的MBMS业务。
本实施例中，获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。通过本实施例，获取蜂窝小区对应的差分修正信号，并以广播业务形式播发该差分修正信号，使得本地小区中的所有用户终端可直接从本地小区的广播控制信道中获取包含有差分修正信号的广播业务，从而获得差分修正信号，用户终端无需经过等待位置坐标上传以及等待差分修正信号下发两个步骤，减少了用户终端获取差分修正信号的延迟以及对通信资源的占用。
上述实施例中，以蜂窝小区的基站位置作为蜂窝小区的位置信息，如果蜂窝小区的覆盖范围过大，小区内的用户终端接收到相同的差分修正信息必然会因自身位置不同而造成能够达到的定位精度存在差异，距离基站较远的用户其定位精度将低于距离基站较近的用户。
进一步的，本发明差分数据播发方法另一可选实施例中，可预先将蜂窝小区划分为多个分区，小区内分区的划分，在初始规划时以能够满足系统能够支持的最高定位精度（例如厘米）为依据，具体到每个小区因地理环境等条件不同，需要以实际测量结果来确定每个分区的大小。
一实施例中，将蜂窝小区A划分为6个分区后，从每个分区中选取一点（例如选取每个分区的中点），作为每个分区的位置，即在步骤S10中获取的蜂窝小区的位置信息中包含每个分区的位置信息，然后基于虚拟参照站VRS技术，得到每个分区对应的差分修正信号。然后，参照步骤S20，蜂窝小区的基站播发的广播业务中便可包含各个分区的差分修正信号，后续用户终端通过解析广播业务得到各个分区的差分修正信号后，便可从中选取离用户终端当前的初步定位结果最近的一个分区的差分修正信号，对初步定位结果进行修正，提高了用户终端的定位精度。
参照图5，图5为本发明差分数据播发方法一实施例中针对多分区蜂窝小区的差分数据播发场景示意图。如图5所示，将蜂窝小区A（容易理解的是，该场景还可包含独立于蜂窝小区A的蜂窝小区B、蜂窝小区C等，由于篇幅有限，仅以蜂窝小区A作为示例）分为：分区sa-1、分区sa-2、分区sa-3、分区na-1、分区na-2、分区na-3，将每个分区的位置信息上传给数据处理与控制中心，数据处理与控制中心基于CORS站上传的数据，通过VRS技术或FKP技术等算法，生成各个小区内所有分区对应的差分修正信号，并将其下发给BM-BC，BM-SC基于接收到的信息，生成各个小区对应的MBMS业务并通过移动通信核心网（Core Network）发送到对应的各个小区基站，最后小区基站播发各自的MBMS业务。蜂窝小区A内所有分区对应的差分修正信号，对应的MBMS业务A，发送到蜂窝小区A的基站，蜂窝小区A的基站播发MBMS业务A；蜂窝小区B内所有分区对应的差分修正信号，对应的MBMS业务B，发送到蜂窝小区B的基站，蜂窝小区B的基站播发MBMS业务B，以此类推。
参照图6，图6为本发明差分数据播发方法一实施例中蜂窝小区对应的差分修正信号的格式示意图。如图6所示，其中，小区位置编号，用于指示差分修正信号应发往哪个小区，其格式与BM-SC发出的MBMS业务会话说明中的位置信息格式相同；分区数量，用于指示当前小区划分成多少个分区；分区n经纬度坐标：对应分区的经纬度坐标，用户终端据此来判断分区的位置和与初步确定的当前位置的距离，继而选择合适分区的差分修正信息；分区n差分修正信号：符合相关标准的差分修正信息内容。
参照图7，图7为本发明差分数据接收方法第一实施例的流程示意图。
在一实施例中，所述差分数据接收方法包括：
步骤S30，获取本地蜂窝小区的广播业务；
步骤S40，对所述广播业务进行解析，得到所述广播业务包含的差分修正信号。
本实施例中，当解析广播业务不存在权限限制时，在同一蜂窝小区内，所有用户终端能接入本地小区的MBMS业务的广播控制信道（BCCH）并找到包含有差分修正信号的广播业务（称作差分修正信号广播业务），并对差分修正信号广播业务进行解调和解码，得到差分修正信号广播业务中包含的差分修正信号。
进一步的，当解析广播业务存在权限限制时。本发明差分数据接收方法一实施例中，步骤S40包括：
获取用户终端的第二权限信息，从所述广播业务中确定所述第二权限信息对应的目标广播业务；
根据所述第二权限信息对所述目标广播业务进行解析，得到所述目标广播业务对应的差分修正信号。
相对应的，本发明差分数据播发方法一实施例中，所述控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号的步骤包括：
基于预置第一权限信息，从所述差分修正信号中获取所述第一权限信息对应的目标差分修正信号；
根据所述目标差分修正信号，生成广播业务；
控制所述蜂窝小区的基站播发所述广播业务。
本实施例中，可将第一权限信息分为三种：低权限信息、中权限信息以及高权限信息。
当第一权限信息为低权限信息时，从差分修正信号（将蜂窝小区分为若干个分区，蜂窝小区的差分修正信号指每个分区对应的差分修正信号）中随机获取X个（例如X取1）作为目标差分修正信号，并基于X个目标差分修正信号，生成低权限信息对应的广播业务1，并按照低权限信息对应的加密方式对广播业务1进行加密，然后控制蜂窝小区的基站播发经过加密处理后的广播业务1。
当第一权限信息为中权限信息时，从差分修正信号（将蜂窝小区分为若干个分区，蜂窝小区的差分修正信号指每个分区对应的差分修正信号）中随机获取Y个（例如Y取分区数量的一半）作为目标差分修正信号，并基于Y个目标差分修正信号，生成中权限信息对应的广播业务2，并按照中权限信息对应的加密方式对广播业务2进行加密，然后控制蜂窝小区的基站播发经过加密处理后的广播业务2；
当第一权限信息为高权限信息时，将差分修正信号（将蜂窝小区分为若干个分区，蜂窝小区的差分修正信号指每个分区对应的差分修正信号）作为目标差分修正信号，并基于目标差分修正信号，生成高权限信息对应的广播业务3，并按照高权限信息对应的加密方式对广播业务3进行加密，然后控制蜂窝小区的基站播发经过加密处理后的广播业务3。
即在该蜂窝小区的MBMS业务的广播控制信道中存在以不同加密方式处理的广播业务1、广播业务2以及广播业务3。
后续，用户终端从该小区基站的广播控制信道获取广播业务，若用户终端的第二权限信息为低用户权限，则可根据低用户权限对应的解密方式对广播业务1进行解析，得到广播业务1包含的目标差分修正信号；若用户终端的第二权限信息为中用户权限，则可根据中用户权限对应的解密方式对广播业务2进行解析，得到广播业务2包含的目标差分修正信号；若用户终端的第二权限信息为高用户权限，则可根据高用户权限对应的解密方式对广播业务3进行解析，得到广播业务3包含的目标差分修正信号。用户的第二权限等级越高，其能解析的广播业务中包含的目标差分修正信息就越丰富，实现最高级别的定位精度优化。
进一步的，本发明差分数据接收方法一实施例中，步骤S40之后，还包括：
获取用户终端的初步定位信息，基于所述初步定位信息从所述差分修正信号中确定最优差分修正信号；
基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。
本实施例中，用户终端通过普通导航定位方法得到的自身的概略位置，根据直接接收到的卫星信号建立定位解算方程得到初步的定位信息G1。若根据步骤S40解析得到的差分修正信号数量只有1个（未对蜂窝小区进行分区），则以解析得到的差分修正信号作为最优差分修正信号，然后基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。若根据步骤S40解析得到的差分修正信号数量有多个（对蜂窝小区进行分区，解析得到的差分修正信号为蜂窝小区中多个分区对应的差分修正信号），则从中选取距离初步定位信息最近的分区，并以该分区对应的差分修正信号作为最优差分修正信号，然后基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。
本实施例中，设置最优差分修正信号的选取机制，提高了对初步定位信息优化程度。
此外，本发明实施例还提出一种存储介质，所述存储介质上存储有差分数据播发程序，所述差分数据播发程序被处理器执行时实现如上所述的差分数据播发方法的步骤。
本发明存储介质即计算机可读存储介质，本发明存储介质的具体实施例与上述差分数据播发方法的各个实施例基本相同，在此不做赘述。
此外，本发明实施例还提出一种存储介质，所述存储介质上存储有差分数据接收程序，所述差分数据接收程序被处理器执行时实现如上所述的差分数据接收方法的步骤。
本发明存储介质即计算机可读存储介质，本发明存储介质的具体实施例与上述差分数据接收方法的各个实施例基本相同，在此不做赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者系统不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者系统所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者系统中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在如上所述的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (17)

  1. 一种差分数据播发方法，其特征在于，所述差分数据播发方法包括以下步骤：
    获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号；
    将所述差分修正信号传输至所述蜂窝小区，并控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号。
  2. 如权利要求1所述的差分数据播发方法，其特征在于，所述获取蜂窝小区的位置信息，基于所述位置信息，得到所述蜂窝小区对应的差分修正信号的步骤包括：
    获取蜂窝小区的位置信息，获取所述位置信息对应的基准站的差分修正信号；
    基于所述位置信息以及差分修正信号，通过虚拟参照站VRS技术，计算得到所述蜂窝小区对应的差分修正信号。
  3. 如权利要求1所述的差分数据播发方法，其特征在于，所述控制所述蜂窝小区的基站以广播业务形式播发所述差分修正信号的步骤包括：
    基于预置第一权限信息，从所述差分修正信号中获取所述第一权限信息对应的目标差分修正信号；
    根据所述目标差分修正信号，生成广播业务；
    控制所述蜂窝小区的基站播发所述广播业务。
  4. 一种差分数据接收方法，其特征在于，所述差分数据接收方法包括一下步骤：
    获取本地蜂窝小区的广播业务；
    对所述广播业务进行解析，得到所述广播业务包含的差分修正信号。
  5. 如权利要求4所述的差分数据接收方法，其特征在于，所述得到所述广播业务包含的差分修正信号的步骤之后，还包括：
    获取用户终端的初步定位信息，基于所述初步定位信息从所述差分修正信号中确定最优差分修正信号；
    基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果
  6. 如权利要求4所述的差分数据接收方法，其特征在于，所述对所述广播业务进行解析，得到所述广播业务包含的差分修正信号的步骤包括：
    获取用户终端的第二权限信息，从所述广播业务中确定所述第二权限信息对应的目标广播业务；
    根据所述第二权限信息对所述目标广播业务进行解析，得到所述目标广播业务对应的差分修正信号。
  7. 如权利要求6所述的差分数据接收方法，其特征在于，所述得到所述广播业务包含的差分修正信号的步骤之后，还包括：
    获取用户终端的初步定位信息，基于所述初步定位信息从所述差分修正信号中确定最优差分修正信号；
    基于所述最优差分修正信号对所述初步定位信息进行修正，得到所述用户终端的定位优化结果。
  8. 一种差分数据播发装置，其特征在于，所述差分数据播发装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据播发程序，所述差分数据播发程序被所述处理器执行时实现如权利要求1所述的差分数据播发方法的步骤。
  9. 一种差分数据播发装置，其特征在于，所述差分数据播发装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据播发程序，所述差分数据播发程序被所述处理器执行时实现如权利要求2所述的差分数据播发方法的步骤。
  10. 一种差分数据播发装置，其特征在于，所述差分数据播发装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据播发程序，所述差分数据播发程序被所述处理器执行时实现如权利要求3所述的差分数据播发方法的步骤。
  11. 一种差分数据接收装置，其特征在于，所述差分数据接收装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据接收程序，所述差分数据接收程序被所述处理器执行时实现如权利要求4所述的差分数据接收方法的步骤。
  12. 一种差分数据接收装置，其特征在于，所述差分数据接收装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据接收程序，所述差分数据接收程序被所述处理器执行时实现如权利要求5所述的差分数据接收方法的步骤。
  13. 一种差分数据接收装置，其特征在于，所述差分数据接收装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据接收程序，所述差分数据接收程序被所述处理器执行时实现如权利要求6所述的差分数据接收方法的步骤。
  14. 一种差分数据接收装置，其特征在于，所述差分数据接收装置包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的差分数据接收程序，所述差分数据接收程序被所述处理器执行时实现如权利要求7所述的差分数据接收方法的步骤。
  15. 一种存储介质，其特征在于，所述存储介质上存储有差分数据播发程序，所述差分数据播发程序被处理器执行时实现如权利要求1所述的差分数据播发方法的步骤。
  16. 一种存储介质，其特征在于，所述存储介质上存储有差分数据播发程序，所述差分数据播发程序被处理器执行时实现如权利要求2所述的差分数据播发方法的步骤。
  17. 一种存储介质，其特征在于，所述存储介质上存储有差分数据播发程序，所述差分数据播发程序被处理器执行时实现如权利要求3所述的差分数据播发方法的步骤。
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