WO2006017977A1 - Procede de mise en oeuvre de localisation continue dans les services bases sur la localisation - Google Patents

Procede de mise en oeuvre de localisation continue dans les services bases sur la localisation Download PDF

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Publication number
WO2006017977A1
WO2006017977A1 PCT/CN2005/001174 CN2005001174W WO2006017977A1 WO 2006017977 A1 WO2006017977 A1 WO 2006017977A1 CN 2005001174 W CN2005001174 W CN 2005001174W WO 2006017977 A1 WO2006017977 A1 WO 2006017977A1
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WO
WIPO (PCT)
Prior art keywords
positioning
location
mobile
entity
mobile station
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PCT/CN2005/001174
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English (en)
French (fr)
Inventor
Li Long
Shiyong Wu
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Zte Corporation
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Publication date
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Publication of WO2006017977A1 publication Critical patent/WO2006017977A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/029Location-based management or tracking services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/52Network services specially adapted for the location of the user terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information

Definitions

  • the present invention relates to a mobile communication network system, and more particularly to a method for implementing continuous positioning by switching a positioning entity in a location-based service. Background technique
  • LBS Location Based Services
  • location service also known as mobile location service or location service
  • the application of the location service can be classified into several types: location trigger application, location information application, tracking application, and rescue application.
  • FIG. 1 is a network structure diagram of a positioning system based on a user plane of an existing mobile communication network system.
  • the positioning system includes traditional network entities and newly added entities.
  • the former mainly includes a mobile station, a mobile switching center and a home location register, and the latter mainly includes a mobile positioning center, a positioning entity, and a positioning service client.
  • the mobile station is a user equipment of the positioning service, and the main function is to provide measurement information related to the positioning of the mobile terminal, and at the same time complete the application implementation of the partial positioning service.
  • the mobile positioning center is the core entity of the positioning service implementation.
  • the main functions are to control the positioning process, interact with various entities, and store and provide the user's location information.
  • the function of the positioning entity is mainly to process the information sent by the mobile station to the network side, thereby calculating the location of the mobile terminal and providing auxiliary positioning data for the positioning of the mobile station.
  • the location service client is a service application entity, which acquires the location of the user through the mobile location center, and then provides different location services according to the location of the user. This entity is managed by the location service provider.
  • the mobile station, the mobile positioning center, the positioning system, and the positioning service client are connected through a TCP/IP network.
  • the communication between the mobile positioning center and the mobile switching center and the home location register is performed through the SS7 network.
  • two or more entities in a network structure can be combined into one entity.
  • the existing positioning method can refer to China Unicom industry standard "800MHz CDMA digital cellular mobile communication network V2 positioning service user plane related equipment technical requirements", "CDMA IX digital cellular shift Mobile Communication Network Mobile Station Specification and International Standard "ANSI TIA/EIA-IS-801 Position Determination Service Standard for Dual Mode Separate Spectrum Systems”.
  • the positioning service system has multiple mobile positioning centers and multiple positioning entities in the network.
  • a positioning entity stores base station data in a certain area, and the GPS (Global Positioning System) satellite reference receiving device of the positioning entity generally covers a range of about 600 kilometers.
  • the mobile station needs to continuously download the auxiliary positioning data from the positioning entity side to perform position measurement and calculation.
  • the selection of the positioning entity is first performed.
  • the positioning entity After the positioning entity that performs the positioning interaction is selected, the positioning entity will not be switched during the continuous positioning process, which will cause the mobile station to roam to another area of the positioning entity during the movement, and the originally selected positioning entity does not Then, the base station data of the area where the mobile station is located or the GPS satellite reference receiving device of the positioning entity no longer serves the area where the mobile station is located. At this time, the mobile station will not obtain the necessary auxiliary positioning information, resulting in lower positioning accuracy and even positioning failure.
  • the present invention provides a method for implementing continuous positioning in a location-based service, where a mobile positioning center selects an interactive positioning entity by a location where the mobile station is currently located, wherein the mobile entity changes after the positioning entity changes.
  • the positioning center sends a geographic information request message to the new positioning entity to implement switching to the positioning entity, and the mobile station switches the positioning entity and performs location data interaction with the new positioning entity.
  • the mobile positioning center determines that the positioning entity changes through the wireless cell parameter in the location report request message sent by the mobile station. And select the corresponding positioning entity.
  • the wireless cell parameter is a system identification number, a network identification number, a base station identifier, a mobile switch identification number, or a network name.
  • the above method for implementing continuous positioning in a location-based service wherein the mobile station performs handover of a positioning entity according to addressing information of a new positioning entity in a location report response message.
  • the above method for implementing continuous positioning in a location-based service wherein the addressing information is an IP address and a port number of a positioning entity, or a URL.
  • the foregoing method for implementing continuous positioning in a location-based service, wherein the positioning entity changes includes the following steps:
  • Step 111 The mobile positioning center selects a new positioning entity request by using the wireless cell parameter, and determines that the new positioning entity is different from the original positioning entity.
  • Step 112 The mobile positioning center initiates a cancel positioning message to the original positioning entity.
  • Step 113 The original positioning entity receives the cancel positioning message, cancels the location data interaction, and returns to the mobile positioning center to cancel the positioning response message;
  • Step 114 The mobile positioning center sends a geographic information request message to the new positioning entity.
  • Step 115 The new positioning entity determines that the location session can be currently performed, and returns a mobile location center geographic information reply message.
  • Step 116 The mobile positioning center returns a location report response message to the mobile station, where the location report response message includes an IP address and a port number of the new positioning entity.
  • Step 117 After receiving the location report response message, the mobile station performs the interaction of the IS801 location data with the new positioning entity by using the IP address and the port number, and re-downloads the auxiliary positioning data.
  • Step 118 The new positioning entity returns a geographic information response message to the mobile positioning center.
  • Step 119 The mobile station performs location calculation, and reports a location report request message to the mobile positioning center.
  • Step 120 The mobile positioning center determines that the selected positioning entity has not changed, and returns a location report response message to the mobile station.
  • Step 121 The mobile positioning center sends the location result of the mobile station to the positioning client by using a positioning request report message;
  • Step 117, step 118 is repeated according to the need of assisting the positioning data downloading;
  • Steps 119, 120 and 121 are performed cyclically.
  • Step 101 The positioning service client initiates a positioning request to the mobile station to the mobile positioning center, ⁇ , .
  • Step 102 The mobile positioning center sends a short message to the mobile station to trigger a positioning request.
  • Step 104 The mobile positioning center allocates a task identifier, and returns a positioning client location request reply message.
  • Step 105 The mobile positioning center sends a geographic information request message to the original positioning entity.
  • Step 106 The original positioning entity returns a mobile positioning center geographic information reply message.
  • Step 107 The mobile positioning center returns a mobile station start location request response message, where the start location request response message includes an IP address and a port number of the original positioning entity.
  • Step 108 The mobile station performs IS801 location data interaction with the original positioning entity according to the IP address and port number of the original positioning entity, and downloads the auxiliary positioning data.
  • Step 109 The positioning entity returns a geographic information response message to the mobile positioning center.
  • Steps 108 and 109 are repeated according to the needs of the auxiliary positioning data downloading.
  • Step 110, step 119, step 120 and step 121 are performed cyclically.
  • the method for implementing continuous positioning in a location-based service where the method for continuously locating is initiated by a mobile station, and the geographic information response message returned by the positioning entity to the mobile positioning center indicates that the mobile station is not in the service scope of the positioning entity.
  • the mobile positioning center initiates a message for notifying the mobile station to switch, and determines that the positioning entity changes by the wireless cell parameter in the start location request message sent by the mobile station after receiving the notification of the handover message, and selects the corresponding positioning entity.
  • the wireless cell parameter is a system identification number, a network identification number, a base station identifier, a mobile switch identification number, or a network name.
  • the above method for implementing continuous positioning in a location-based service wherein the mobile station performs handover of a positioning entity according to addressing information of a new positioning entity in a location report response message.
  • the above method for implementing continuous positioning in a location-based service wherein the addressing information is an IP address and a port number of a positioning entity, or a uniform resource locator.
  • the foregoing method for implementing continuous positioning in a location-based service, wherein the positioning entity changes includes the following steps:
  • Step 209 The geographic information response message returned by the original positioning entity to the mobile positioning center, where the geographic information response information includes a flag that the mobile station goes out of the service area, and the mobile positioning center sends a cancellation request message to the original positioning entity.
  • Step 210 The original positioning entity receives the cancel positioning request message, cancels the location data interaction, and returns the mobile positioning center cancel positioning response message.
  • Step 213 The mobile positioning center sends a geographic information request message to the new positioning entity.
  • Step 214 The new positioning entity determines that the location session can be currently performed, and returns a mobile location center geographic information reply message.
  • Step 215 The mobile positioning center returns a start location request process response message to the mobile station.
  • Step 216 The mobile station receives the interaction with the new positioning entity to perform IS801 location data, and re-downloads the auxiliary positioning data.
  • Step 217 The new positioning entity returns a geographic information response message to the mobile positioning center. Steps 216 and 217 are repeated according to the need of the auxiliary positioning data downloading.
  • Step 201 The mobile station initiates a start location procedure request message.
  • Step 202 The mobile positioning center sends a geographic information request message to the original positioning entity.
  • Step 203 The original positioning entity returns a mobile positioning center geographic information reply message.
  • Step 204 The mobile positioning center returns a mobile station start location request response message, where the start location request response message includes an IP address and a port number of the original positioning entity.
  • Step 205 The mobile station performs IS801 location data interaction with the original positioning entity according to the IP address and port number of the original positioning entity, and downloads the auxiliary positioning data.
  • Step 206 The original positioning entity returns a geographic information response message to the mobile positioning center, and returns a location result.
  • Step 207 The mobile station and the original positioning entity perform an additional location data interaction session until the positioning is completed.
  • Step 208 The original positioning entity returns a geographic information response message to the mobile positioning center, and returns a location result.
  • Step 207 and step 208 are repeatedly performed according to the need of the auxiliary positioning data downloading.
  • the method for implementing continuous positioning in the location-based service of the present invention can ensure that the positioning entity provides the base station auxiliary information of the current location of the mobile terminal by increasing the process of the location entity handover, and ensures that the current location of the mobile terminal is in the positioning entity GPS satellite reference reception. Within the coverage of the equipment, the accuracy and success rate of continuous positioning are greatly enhanced.
  • 1 is a network structure of a user plane-based positioning service in a mobile communication network
  • FIG. 2 is a schematic flowchart of a method for switching a positioning entity that initiates a tracking continuous positioning process on the network side of the present invention
  • FIG. 3 is a schematic diagram of a process in which a network-side initiated tracking and continuous positioning process does not implement a positioning entity handover
  • FIG. 4 is a schematic flowchart of an embodiment of a network-side initiated tracking and continuous positioning process to implement a positioning entity handover
  • FIG. 5 is a schematic flow chart of a method for switching a positioning entity of a mobile phone to initiate a tracking continuous positioning process according to the present invention
  • FIG. 6 is a schematic diagram of a process in which a mobile phone initiates a tracking continuous positioning process without performing a positioning entity handover
  • FIG. 7 is a schematic flowchart of a mobile phone initiating a tracking continuous positioning process to implement a positioning entity handover.
  • FIG. 2 is a schematic flow chart of a method for switching a positioning entity that initiates a tracking continuous positioning process on the network side of the present invention, and includes the following steps:
  • Step S1 the mobile positioning center receives the location report request message of the mobile station, and selects a corresponding positioning entity according to the wireless cell parameter; in the continuous positioning process, the mobile station continuously sends a location report message to the mobile positioning center, where the message carries the wireless a cell parameter, the mobile positioning center selects a corresponding positioning entity by using a wireless cell parameter, where the wireless cell parameter may be a network parameter such as a system identification number, a network identification number, a base station identifier, a mobile switch identification number, and a network name;
  • Step S2 determining whether the selected positioning entity is the same as the original positioning entity, if the same, proceeding to step S6, if different, proceeds to step S3;
  • Step S3 The mobile positioning center performs a positioning entity handover, and sends a geographic information request message to the new positioning entity, and the new positioning entity determines that the current resource is available, and prepares to perform location information interaction with the mobile station;
  • Step S4 The mobile positioning center returns a mobile station location report response message, where the location report response message includes addressing information of the new positioning entity, where the addressing information may be an IP address and a port number of the positioning entity, or a URL of the positioning entity. And other performance formats;
  • Step S5 The mobile station determines that the positioning entity switches, and the mobile station initiates positioning information interaction with the new positioning entity.
  • Step S6 The mobile positioning center returns a response report message to the mobile station location, and performs positioning information interaction with the original positioning entity.
  • FIG. 3 is a schematic diagram of a process in which a network-side initiated tracking continuous positioning process does not implement a positioning entity handover, in which a mobile positioning center and a mobile station always perform location information interaction with a first selected positioning entity without performing a positioning entity.
  • the switch includes the following steps:
  • Step S301 The positioning service client initiates a positioning request message to a mobile station to the mobile positioning center, and performs tracking type continuous positioning on the mobile station.
  • Step S302 The mobile positioning center sends a short message to the mobile station to trigger a positioning request.
  • Step S303 The mobile station initiates a location location process request message to the mobile location center.
  • Step S304 The mobile location center allocates the task identifier of the location, and returns a location client request response message.
  • Step S305 The mobile positioning center selects a corresponding positioning entity, and sends a geographic information request message to the positioning entity.
  • Step S306 the positioning entity returns a mobile location center geographic information reply message, indicating that the positioning can be started;
  • Step S307 the mobile positioning center returns a mobile station to initiate a positioning request response message, and returns an IP address and a port number, or a URL of the positioning entity;
  • Step S308 the mobile station interacts with the positioning entity to perform IS801 location data, and downloads the auxiliary positioning data.
  • Step S309 the positioning entity returns a geographic information response message to the mobile positioning center.
  • Step S310 the mobile station performs location calculation, and reports the location result and the wireless cell and the like to the mobile positioning center by using the location report request message;
  • Step S311 the mobile positioning center receives the location report request message, and returns a location report response message to the mobile station for confirmation;
  • Step S312 the mobile positioning center sends the location result of the mobile station to the positioning client by using a positioning request report message
  • step S313, step S308, step S309, step S310, step S311 and step S312 are continuously repeated.
  • Step S308 and step S309 are repeatedly executed according to the requirement of the auxiliary positioning data downloading. When the auxiliary positioning data is not required to be downloaded, the repeated execution is not required.
  • FIG. 4 is a schematic flowchart of an embodiment of a network-side initiated tracking continuous positioning process in which a positioning entity handover is implemented, including the following steps:
  • Step S401 The positioning service client initiates a positioning request message to a mobile station to the mobile positioning center, and performs tracking type continuous positioning on the mobile station.
  • Step S402 The mobile positioning center sends a short message to the mobile station to trigger a positioning request.
  • Step S403 The mobile station initiates a location location procedure request message to the mobile location center.
  • Step S404 The mobile location center allocates the task identifier of the location, and returns a location client request response message.
  • Step S405 The mobile positioning center selects a corresponding positioning entity, and sends a geographic information request message to the positioning entity.
  • Step S406 the positioning entity returns a mobile location center geographic information reply message, indicating that the positioning can be started;
  • Step S407 the mobile positioning center returns a mobile station start positioning request response message, indicating an IP address and a port number, or a URL of the positioning entity;
  • Step S408 The mobile station interacts with the positioning entity to perform IS801 location data, and downloads the auxiliary positioning data.
  • Step S409 the positioning entity returns a geographic information response message to the mobile positioning center.
  • Step S410 the mobile station performs location calculation, and reports the location result and the wireless cell and the like to the mobile positioning center by using the location report request message;
  • Step S411 The mobile positioning center selects a positioning entity by using the carried wireless cell parameter in the location report request message, and if the selected positioning entity is the same as the original positioning entity, returns a location report response to the mobile station;
  • Step S412 The mobile positioning center sends the location result of the mobile station to the positioning client by using a positioning request report message
  • Step S413 the mobile station performs location calculation, and reports the location result and the wireless cell and the like to the mobile positioning center by using the location report request message;
  • Step S414 after a period of time, the mobile positioning center judges that the mobile station roams to another positioning entity area by using the wireless cell parameter in the location report request message, and the mobile positioning center passes the location report.
  • the carrying radio cell parameter selection positioning entity in the message indicates that the selected positioning entity is different from the original positioning entity;
  • Step S415 The mobile positioning center initiates a cancel positioning message to the original positioning entity.
  • Step S416 the original positioning entity receives the cancel positioning message, cancels the location data interaction, and returns to the mobile positioning center to cancel the positioning response message;
  • Step S417 The mobile positioning center sends a geographic information request message to the new positioning entity.
  • Step S418 The new positioning entity determines that the location session can be currently performed, and returns a mobile location center geographic information reply message.
  • Step S419 the mobile positioning center returns the IP address and port number of the newly located entity, or the URL in the location report response message, to the mobile station;
  • Step S420 After receiving the location report response message, the mobile station determines that the location entity in the location report response is different from the original location entity, and the mobile station interacts with the new location entity to perform IS801 location data, and re-downloads the auxiliary location data.
  • Step S421 the new positioning entity returns a geographic information response message to the mobile positioning center;
  • Step S422 the mobile station continuously performs the location calculation by itself, and continuously reports the location result and the wireless cell and the like to the mobile positioning center through the location report message;
  • Step S423 the mobile positioning center determines that the selected positioning entity has not changed through the wireless cell parameter, returns a location report response message to the mobile station, and if there is a change, returns to step S415;
  • Step S424 the mobile positioning center sends the location result of the mobile station to the positioning client by using a positioning request report message;
  • step S425 step S420, step S421, step S422, step S423, and step S424 are continuously repeated.
  • Step S420 and step S421 are repeatedly performed according to the requirement of the auxiliary positioning data downloading.
  • the repeated execution is not required.
  • FIG. 5 is a schematic flowchart of a method for switching a positioning entity that initiates a tracking continuous positioning process by the mobile terminal of the present invention, and specifically includes the following steps:
  • Step S10 During the continuous positioning process, the positioning entity continuously returns a geographic information response message to the mobile positioning center, where the message indicates that a mobile station in the mobile positioning center is not in the service scope of the positioning entity, and the mobile positioning center initiates a message notifying the mobile station to switch.
  • the mobile station After receiving the message, the mobile station initiates a location request message, where the message carries the wireless cell parameter, and the mobile positioning center passes the wireless cell parameter.
  • the wireless cell parameter may be a system identification number, a network identification number, a base station identifier, a mobile switch identification number, a network name, and the like;
  • Step S20 determining whether the selected positioning entity is the same as the original positioning entity, if the same, proceed to step S60, if not, proceed to step S30;
  • Step S30 The mobile positioning center performs a positioning entity handover, and sends a request message for geographic information to the new positioning entity. If the new positioning entity determines that the current resource is available, it prepares to perform location data interaction with the mobile station.
  • Step S40 The mobile positioning center returns a mobile station start positioning process response message, where the start positioning process response message includes addressing information of the new positioning entity, where the addressing information may be an IP address and a port number of the positioning entity, or a positioning entity URL and other presentation formats;
  • Step S50 The mobile station initiates positioning information interaction with the new positioning entity.
  • Step S60 The mobile positioning center returns to the mobile station to initiate a positioning process response message, and performs positioning information interaction with the original positioning entity.
  • FIG. 6 is a schematic diagram of a process in which a mobile phone initiates a tracking continuous positioning process without performing a positioning entity handover.
  • the mobile positioning center and the mobile station always perform location information interaction with the first selected positioning entity without performing positioning entity. Switching specifically includes the following steps:
  • Step S601 The mobile station initiates a request for starting a positioning process.
  • Step S602 The mobile positioning center selects a corresponding positioning entity, and sends a geographic information request message to the positioning entity.
  • Step S603 the positioning entity returns a mobile location center geographic information reply message, indicating that the positioning can be started;
  • Step S604 The mobile positioning center returns a mobile station start positioning request response message, indicating an IP address and a port number of the positioning entity.
  • Step S605 The mobile station interacts with the positioning entity to perform IS801 location data, and downloads the auxiliary positioning data.
  • Step S606 the positioning entity returns a geographic information response message to the mobile positioning center, and returns a location result;
  • Step S607 the mobile station and the positioning entity perform an additional location data interaction session, as needed, until the final positioning is completed;
  • Step S608 the positioning entity returns a geographic information response message to the mobile positioning center, and returns the location. The result.
  • Step S701 A mobile station initiates a location positioning process request message
  • Step S702 The mobile positioning center selects a corresponding positioning entity, and sends a geographic information request message to the positioning entity.
  • Step S703 the positioning entity returns a mobile location center geographic information reply message, indicating that the positioning can be started;
  • Step S704 the mobile positioning center returns a mobile station to initiate a positioning request response, indicating an IP address and a port number of the positioning entity, or a URL address;
  • Step S705 The mobile station interacts with the positioning entity to perform IS801 location data, and downloads the auxiliary positioning data.
  • Step S706 the positioning entity returns a geographic information response message to the mobile positioning center, where the geographic information response information includes a flag that the mobile station goes out of the service area;
  • Step S707 The mobile positioning center initiates a cancel positioning request message to the original positioning entity.
  • Step S709 The mobile positioning center sends a message for notifying the handover to the mobile station, instructing the mobile station to perform a "PDE handover";
  • Step S710 The mobile station initiates a new start positioning process request.
  • Step S711 The mobile positioning center determines that the selected positioning entity is different from the original positioning entity by starting the wireless cell parameter selection positioning entity in the positioning process request message, and the mobile positioning center sends a geographic information request message to the new positioning entity.
  • Step S712 the new positioning entity determines that the location session can be currently performed, and returns a mobile location center geographic information reply message;
  • Step S713 the mobile positioning center encapsulates the IP address and the port number of the new positioning entity in the start location request process response message, and returns the result to the mobile station.
  • Step S714 After receiving the start location request process response message, the mobile station determines that the positioning entity in the response request process response message is different from the original positioning entity, and then the mobile station interacts with the new positioning entity to perform IS801 location data, Download assisted targeting data. Step S715, the new positioning entity returns a geographic information response message to the mobile positioning center. In step S716, step S714 and step S715 are repeated according to the need of the auxiliary positioning data downloading. Step S716 is repeatedly performed according to the requirement of the auxiliary positioning data downloading. When the auxiliary positioning data is not required to be downloaded, it is not required to be repeatedly executed.
  • the mobile station is in a state of constant movement.
  • the area where the mobile station moves may have a handover of the positioning entity jurisdiction, ranging from the area of one positioning entity to the area of another positioning entity.
  • the positioning of the GPS (Global Positioning System) satellite reference receiving device of the positioning entity is generally around 600 kilometers. If the switching of the positioning entity is not performed, the positioning accuracy is lowered or even the positioning fails when the positioning entity is exceeded.
  • the mobile station re-downloads the auxiliary positioning data by performing the switching of the positioning entity, thereby improving the positioning accuracy and the positioning success rate.

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Description

一种在基于位置的业务中实现连续定位的方法 技术领域
本发明涉及移动通信网络系统,特别是涉及了一种在基于位置的业务中通 . 过切换定位实体实现连续定位的方法。 背景技术
(Location Based Services, 简称 LBS), 又称移动位置业务或定位业务, 是指移动网络通过特定的定位技术获取移动终端的地理信息 (经纬度坐标), 提供给移动用户本人、通信系统或第三方,并借助一定的电子地图信息的支持, 为移动用户提供与其位置相关的呼叫或非呼叫类业务。定位业务的应用可以分 为位置触发类应用、 位置信息类应用、 跟踪类应用、 救援类应用等几个类型。
图 1为现有的移动通讯网络系统基于用户平面的定位系统的网络结构图。 定位系统包括传统的网络实体和新增加的实体。前者主要包括移动台、移动交 换中心和归属位置寄存器,后者主要包括移动定位中心、定位实体以及定位业 务客户机等。
移动台是定位业务的用户端设备,主要功能是提供移动终端的定位相关的 测量信息, 同时完成部分定位业务的应用实现。
移动定位中心是定位业务实现的核心实体,主要功能是控制定位过程, 同 各个实体交互, 以及存储和提供用户的位置信息等。
定位实体的功能主要是对移动台送到网络侧的信息进行处理,从而计算出 移动终端的位置, 并提供移动台定位的辅助定位数据。
定位业务客户机是业务应用实体,通过移动定位中心获取用户的位置,再 根据用户位置提供不同的位置业务。 该实体由定位业务提供商负责管理。
在基于用户平面的定位网络中, 移动台、移动定位中心、定位系统和定位 业务客户机是通过 TCP/IP网络进行连接的。 移动定位中心和移动交换中心、 归属位置寄存器之间的通讯通过七号信令网进行。物理实现时,可以将网络结 构中的两个或者多个实体合并为一个实体。
现有的定位方法可参考中国联通行业标准《800MHz CDMA数字蜂窝移 动通信网 V2定位业务用户平面相关设备技术要求》、 《CDMA IX数字蜂窝移 动通信网移动台规范》 以及国际标准 《ANSI TIA/EIA-IS-801 Position Determination Service Standard for Dual Mode Separate Spectrum Systems》。
在 CDMA(Code Division Multiple Access, 即码分多址)移动通讯网中, 定 位业务系统在网络中会存在多个移动定位中心和多个定位实体。一般来说,一 个定位实体保存一定区域内的基站数据,且定位实体的 GPS(Global Positioning System , 即全球卫星定位系统) 卫星参考接收设备覆盖范围一般在 600公里 左右。 在连续定位流程中, 移动台需要不断从定位实体侧下载辅助定位数据, 进行位置的测量与计算。 当发起对某移动台的跟踪连续定位时,会首先进行定 位实体的选择。在选择了进行定位交互的定位实体后,在连续定位过程中将不 再进行定位实体的切换,这样将导致移动台在移动过程中漫游至另外一个定位 实体的区域时,原来选择的定位实体不再有该移动台所在区域的基站数据或者 定位实体的 GPS卫星参考接收设备不再服务移动台所在区域。 这时移动台将 得不到必要的辅助定位信息, 造成定位精度降低, 甚至定位失败。 发明内容
本发明的目的在于提供一种在基于位置的业务中实现连续定位的方法,能 在连续定位过程中实现对定位实体的选择和切换,防止定位失败和定位精度低 的情况出现。
为了实现上述目的,本发明提供了一种在基于位置的业务中实现连续定位 的方法,移动定位中心通过移动台当前所在的位置选择交互的定位实体,其中, 定位实体发生变化后,所述移动定位中心向新定位实体发送地理信息请求消息 实现对定位实体的切换,所述移动台切换定位实体, 并与新定位实体进行位置 数据交互。
上述的在基于位置的业务中实现连续定位的方法,其中,所述连续定位的 方法由网络侧发起时,移动定位中心通过移动台发送的位置报告请求消息中的 无线小区参数判断定位实体发生变化, 并选择对应的定位实体。
上述的在基于位置的业务中实现连续定位的方法, 其中,所述的无线小区 参数为系统识别号、网络识别号、基站标识、移动交换机识别号码或网络名称。
上述的在基于位置的业务中实现连续定位的方法,其中,所述移动台根据 位置报告响应消息中的新定位实体的寻址信息进行定位实体的切换。 上述的在基于位置的业务中实现连续定位的方法,其中,所述寻址信息为 定位实体的 IP地址和端口号, 或 URL。
上述的在基于位置的业务中实现连续定位的方法,其中,定位实体发生变 化后具体包括以下步骤:
步骤 111, 移动定位中心通过无线小区参数选择新定位实体请求, 判断出 新定位实体与原定位实体不相同;
步骤 112, 移动定位中心向原定位实体发起取消定位消息;
步骤 113, 原定位实体收到取消定位消息, 取消位置数据交互, 返回移动 定位中心取消定位响应消息;
步骤 114, 移动定位中心向新定位实体发送地理信息请求消息; 步骤 115, 新定位实体判断当前可以进行位置会话, 返回移动定位中心地 理信息答复消息;
步骤 116, 移动定位中心返回位置报告响应消息给移动台, 所述位置报告 响应消息包含新定位实体的 IP地址及端口号;
步骤 117,移动台收到位置报告响应消息后,通过所述 IP地址及端口号与 新定位实体进行 IS801位置数据的交互, 重新下载辅助定位数据;
步骤 118, 新定位实体向移动定位中心返回地理信息响应消息; 步骤 119, 移动台进行位置的计算, 并上报位置报告请求消息给移动定位 中心;
步骤 120, 移动定位中心判断选择的定位实体没有变化, 返回位置报告响 应消息给移动台;
步骤 121, 移动定位中心将移动台的位置结果通过定位请求报告消息发送 给定位客户机;
根据辅助定位数据下载的需要, 重复步骤 117、 步骤 118;
循环执行步骤 119、 步骤 120和步骤 121。
上述的在基于位置的业务中实现连续定位的方法,其中,定位实体发生变 化前具体包括以下步骤:
步骤 101, 定位业务客户机向移动定位中心发起对移动台的定位请求消 ≤、 .;
步骤 102, 移动定位中心向移动台发送短消息触发定位请求; 步骤 103, 移动台向移动定位中心发起启动定位过程请求消息;
步骤 104, 移动定位中心分配任务标识, 返回定位客户机位置请求答复消 息;
步骤 105, 移动定位中心向原定位实体发送地理信息请求消息;
步骤 106, 原定位实体返回移动定位中心地理信息答复消息;
步骤 107, 移动定位中心返回移动台启动定位请求响应消息, 所述启动定 位请求响应消息包括原定位实体的 IP地址和端口号;
步骤 108, 移动台根据原定位实体的 IP地址和端口号与原定位实体进行 IS801位置数据交互, 下载辅助定位数据;
步骤 109, 定位实体向移动定位中心返回地理信息响应消息;
根据辅助定位数据下载的需要, 重复步骤 108、 步骤 109;
步骤 110, 循环执行步骤 119、 步骤 120和步骤 121。
上述的在基于位置的业务中实现连续定位的方法,其中,所述连续定位的 方法由移动台发起时,定位实体向移动定位中心返回的地理信息响应消息会指 示移动台不在该定位实体服务范围, 移动定位中心发起通知移动台切换的消 息,并通过移动台收到通知切换的消息后发送的启动定位请求消息中的无线小 区参数判断定位实体发生变化, 并选择对应的定位实体。
上述的在基于位置的业务中实现连续定位的方法,其中,所述的无线小区 参数为系统识别号、网络识别号、基站标识、移动交换机识别号码或网络名称。
上述的在基于位置的业务中实现连续定位的方法,其中,所述移动台根据 位置报告响应消息中的新定位实体的寻址信息进行定位实体的切换。
上述的在基于位置的业务中实现连续定位的方法,其中,所述寻址信息为 定位实体的 IP地址和端口号, 或统一资源定位器。
上述的在基于位置的业务中实现连续定位的方法,其中,定位实体发生变 化后具体包括以下步骤:
步骤 209, 原定位实体向移动定位中心返回的地理信息响应消息, 地理信 息响应信息中包含有移动台越出服务区的标志,移动定位中心向原定位实体发 起取消定位请求消息;
步骤 210, 原定位实体收到取消定位请求消息, 取消位置数据交互, 返回 移动定位中心取消定位响应消息; 步骤 211, 移动定位中心向移动台发送一个通知切换的消息; 步骤 212, 移动台发起新的启动定位过程请求;
步骤 213, 移动定位中心向新定位实体发送地理信息请求消息;
步骤 214, 新定位实体判断当前可以进行位置会话, 则返回移动定位中心 地理信息答复消息;
步骤 215, 移动定位中心将启动定位请求过程响应消息返回给移动台; 步骤 216, 移动台收到与新定位实体进行 IS801位置数据的交互, 重新下 载辅助定位数据;
步骤 217, 新定位实体向移动定位中心返回地理信息响应消息; 根据辅助定位数据下载的需要, 重复步骤 216、 步骤 217。
上述的在基于位置的业务中实现连续定位的方法,其中,定位实体发生变 化前具体包括以下步骤:
步骤 201, 移动台发起启动定位过程请求消息;
步骤 202, 移动定位中心向原定位实体发送地理信息请求消息; 步骤 203, 原定位实体返回移动定位中心地理信息答复消息;
步骤 204, 移动定位中心返回移动台启动定位请求响应消息, 所述启动定 位请求响应消息包括原定位实体的 IP地址和端口号;
步骤 205, 移动台根据原定位实体的 IP地址和端口号与原定位实体进行 IS801位置数据交互, 下载辅助定位数据;
步骤 206, 原定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果;
步骤 207, 移动台和原定位实体执行附加的位置数据交互会话, 直到定位 完成;
步骤 208, 原定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果;
根据辅助定位数据下载的需要, 重复执行步骤 207、 步骤 208。
本发明的在基于位置的业务中实现连续定位的方法,通过增加定位实体切 换的流程, 能够确保定位实体提供移动终端当前位置的基站辅助信息,确保移 动终端当前所在位置在定位实体 GPS卫星参考接收设备的覆盖范围内, 使得 连续定位的精度和成功率都大大加强。 附图说明
图 1是移动通讯网络中基于用户平面的定位业务的网络结构;
图 2 是本发明网络侧发起跟踪连续定位流程的定位实体切换方法的流程 示意图;
图 3是网络侧发起跟踪连续定位流程不实施定位实体切换的流程示意图; 图 4 是网络侧发起跟踪连续定位流程实施定位实体切换的一个实施例的 流程示意图;
图 5 是本发明手机发起跟踪连续定位流程的定位实体切换方法的流程示 意图;
图 6 是手机发起跟踪连续定位流程不实施定位实体切换的流程示意图; 图 7是手机发起跟踪连续定位流程实施定位实体切换的流程示意图。 具体实施方式
下面结合附图对本发明的技术方案的实施作进一步的详细描述。
图 2是本发明网络侧发起跟踪连续定位流程的定位实体切换方法的流程示 意图, 包括如下步骤:
步骤 Sl, 移动定位中心接收移动台的位置报告请求消息, 并根据无线小 区参数选择对应的定位实体;在连续定位过程中,移动台会不断向移动定位中 心发出位置报告消息, 该消息中携带无线小区参数,移动定位中心通过无线小 区参数选择对应的定位实体,其中无线小区参数可以是系统识别号, 网络识别 号, 基站标识, 移动交换机识别号码, 网络名称等网络参数;
步骤 S2, 判断选择的定位实体与原定位实体是否相同, 如果相同, 进入 步骤 S6, 如果不同进入步骤 S3;
步骤 S3, 移动定位中心进行定位实体切换, 向新定位实体发送地理信息 请求消息,新定位实体判断当前有资源可用,则准备与移动台进行位置信息交 互;
步骤 S4, 移动定位中心返回给移动台位置报告响应消息, 该位置报告响 应消息包括新定位实体的寻址信息, 其中该寻址信息可以是定位实体的 IP地 址和端口号, 或定位实体的 URL等多种表现格式; 步骤 S5, 移动台判断定位实体切换, 移动台与新的定位实体发起定位信 息交互;
步骤 S6, 移动定位中心返回给移动台位置报告响应消息, 并与原定位实 体进行定位信息交互。
图 3是网络侧发起跟踪连续定位流程不实施定位实体切换的流程示意图, 在该流程中,移动定位中心和移动台始终与第一次选择的定位实体进行位置信 息的交互, 而不进行定位实体的切换, 包括以下步骤:
步骤 S301 , 定位业务客户机向移动定位中心发起对某移动台的定位请求 消息, 要求对移动台做跟踪型的连续定位;
步骤 S302, 移动定位中心向移动台发送短消息触发定位请求;
步骤 S303 , 移动台向移动定位中心发起启动定位过程请求消息; 步骤 S304, 移动定位中心分配该次定位的任务标识, 返回定位客户机位 置请求答复消息;
步骤 S305 , 移动定位中心选择一个对应的定位实体, 向该定位实体发送 地理信息请求消息;
步骤 S306, 定位实体返回移动定位中心地理信息答复消息, 指示可以开 始定位;
步骤 S307, 移动定位中心返回给移动台启动定位请求响应消息, 返回定 位实体的 IP地址和端口号, 或 URL;
步骤 S308, 移动台与定位实体进行 IS801位置数据交互, 下载辅助定位 数据;
步骤 S309, 定位实体向移动定位中心返回地理信息响应消息;
步骤 S310, 移动台进行位置的计算, 并将位置结果以及无线小区等信息 通过位置报告请求消息上报给移动定位中心;
步骤 S311, 移动定位中心收到位置报告请求消息, 就返回位置报告响应 消息给移动台以确认;
步骤 S312, 移动定位中心将移动台的位置结果通过定位请求报告消息发 送给定位客户机;
步骤 S313, 不断重复步骤 S308、 步骤 S309、 步骤 S310、 步骤 S311及步 骤 S312。 其中, 步骤 S308、 步骤 S309根据辅助定位数据下载的需要重复执行, 当 不需要下载辅助定位数据时, 不需要重复执行。
图 4 是网络侧发起跟踪连续定位流程在实施了定位实体切换的一个实施 例的流程示意图, 包括以下步骤: '
步骤 S401 , 定位业务客户机向移动定位中心发起对某移动台的定位请求 消息, 要求对移动台做跟踪型的连续定位;
步骤 S402, 移动定位中心向移动台发送短消息触发定位请求;
步骤 S403, 移动台向移动定位中心发起启动定位过程请求消息; 步骤 S404, 移动定位中心分配该次定位的任务标识, 返回定位客户机位 置请求答复消息;
步骤 S405, 移动定位中心选择一个对应的定位实体, 向该定位实体发送 地理信息请求消息;
步骤 S406, 定位实体返回移动定位中心地理信息答复消息, 指示可以开 始定位;
步骤 S407, 移动定位中心返回移动台启动定位请求响应消息, 指示定位 实体的 IP地址和端口号, 或 URL;
步骤 S408, 移动台与定位实体进行 IS801位置数据交互, 下载辅助定位 数据;
步骤 S409, 定位实体向移动定位中心返回地理信息响应消息;
步骤 S410, 移动台进行位置的计算, 并将位置结果以及无线小区等信息 通过位置报告请求消息上报给移动定位中心;
步骤 S411 , 移动定位中心通过位置报告请求消息中的携带无线小区参数 选择定位实体,若选择的定位实体与原定位实体相同,返回位置报告响应给移 动台;
步骤 S412, 移动定位中心将移动台的位置结果通过定位请求报告消息发 送给定位客户机;
步骤 S413, 移动台进行位置的计算, 并将位置结果以及无线小区等信息 通过位置报告请求消息上报给移动定位中心;
步骤 S414,一段时间后,移动定位中心通过位置报告请求消息中的无线小 区参数判断移动台漫游至另外一个定位实体区域下,移动定位中心通过位置报 告消息中的携带无线小区参数选择定位实体,判断选择的定位实体与原定位实 体不相同;
步骤 S415, 移动定位中心向原定位实体发起取消定位消息;
步骤 S416, 原定位实体收到取消定位消息, 取消位置数据交互, 返回移 动定位中心取消定位响应消息;
步骤 S417, 移动定位中心向新定位实体发送地理信息请求消息; 步骤 S418, 新定位实体判断当前可以进行位置会话, 则返回移动定位中 心地理信息答复消息;
步骤 S419, 移动定位中心将新定位实体的 IP地址及端口号, 或 URL封 装在位置报告响应消息中返回给移动台;
步骤 S420, 移动台收到位置报告响应消息后, 通过判断发现位置报告响 应中的定位实体与原定位实体不相同,则移动台与新定位实体进行 IS801位置 数据的交互, 重新下载辅助定位数据;
步骤 S421, 新定位实体向移动定位中心返回地理信息响应消息; 步骤 S422, 移动台不断自己进行位置的计算, 并将位置结果以及无线小 区等信息通过位置报告消息不断上报给移动定位中心;
步骤 S423 , 移动定位中心通过无线小区参数判断选择的定位实体没有变 化, 返回位置报告响应消息给移动台, 如果有变化, 返回步骤 S415;
步骤 S424, 移动定位中心将移动台的位置结果通过定位请求报告消息发 送给定位客户机;
步骤 S425, 不断重复步骤 S420、 步骤 S421、 步骤 S422、 步骤 S423, 步 骤 S424。
其中, 步骤 S420、 步骤 S421根据辅助定位数据下载的需要重复执行, 当 不需要下载辅助定位数据时, 不需要重复执行。
图 5是本发明手机端发起跟踪连续定位流程的定位实体切换方法的流程 示意图, 具体包括如下步骤:
步骤 S10, 在连续定位过程中, 定位实体会不断向移动定位中心返回地理 信息响应消息, 该消息中指示移动定位中心某移动台不在该定位实体服务范 围,移动定位中心发起通知移动台切换的消息,移动台收到该消息后发起启动 定位请求消息, 该消息中携带无线小区参数,移动定位中心通过无线小区参数 选择对应的定位实体。无线小区参数可以是系统识别号, 网络识别号, 基站标 识, 移动交换机识别号码, 网络名称等网络参数;
步骤 S20, 判断选择的定位实体与原定位实体是否相同, 如果相同, 进入 步骤 S60, 如果不同, 进入步骤 S30;
步骤 S30, 移动定位中心进行定位实体切换, 向新定位实体发送地理信息 的请求消息,新定位实体判断当前有资源可用,则准备与移动台进行位置数据 交互;
步骤 S40, 移动定位中心返回给移动台启动定位过程响应消息, 该启动定 位过程响应消息包括新定位实体的寻址信息,其中该寻址信息可以是定位实体 的 IP地址和端口号, 或定位实体的 URL等多种表现格式;
步骤 S50, 移动台与新的定位实体发起定位信息交互;
步骤 S60, 移动定位中心返回给移动台启动定位过程响应消息, 并与原定 位实体进行定位信息交互。
图 6 是手机发起跟踪连续定位流程不实施定位实体切换的流程示意图, 在该流程中,移动定位中心和移动台始终与第一次选择的定位实体进行位置信 息的交互, 而不进行定位实体的切换, 具体包括以下步骤:
步骤 S601, 移动台发起启动定位过程请求;
步骤 S602, 移动定位中心选择一对应的定位实体, 向该定位实体发送地 理信息请^消息;
步骤 S603, 定位实体返回移动定位中心地理信息答复消息, 指示可以开 始定位;
步骤 S604, 移动定位中心返回移动台启动定位请求响应消息, 指示定位 实体的 IP地址和端口号;
步骤 S605, 移动台与定位实体进行 IS801位置数据交互, 下载辅助定位 数据;
步骤 S606, 定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果;
步骤 S607, 根据需要, 移动台和定位实体执行附加的位置数据交互会话, 直到最后定位完成;
步骤 S608, 定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果。
图 7是手机发起跟踪连续定位流程实施定位实体切换的流程示意图,具体 包括以下步骤- 步骤 S701, 移动台发起启动定位过程请求消息;
步骤 S702, 移动定位中心选择一个对应的定位实体, 向该定位实体发送 地理信息请求消息;
步骤 S703, 定位实体返回移动定位中心地理信息答复消息, 指示可以开 始定位;
步骤 S704, 移动定位中心返回移动台启动定位请求响应, 指示定位实体 的 IP地址和端口号, 或 URL地址;
步骤 S705, 移动台与定位实体进行 IS801位置数据交互, 下载辅助定位 数据;
步骤 S706, 定位实体向移动定位中心返回地理信息响应消息, 地理信息 响应信息中包含有移动台越出服务区的标志;
步骤 S707, 移动定位中心向原定位实体发起取消定位请求消息; 步骤 S708, 原定位实体收到取消定位请求消息, 取消位置数据交互, 返 回移动定位中心取消定位响应消息;
步骤 S709, 移动定位中心向移动台发送一个通知切换的消息, 指示移动 台进行 "PDE切换" ;
步骤 S710, 移动台发起新的启动定位过程请求;
步骤 S711, 移动定位中心通过启动定位过程请求消息中的携带无线小区 参数选择定位实体,判断选择的定位实体与原定位实体不相同,移动定位中心 向新定位实体发送地理信息请求消息;
步骤 S712, 新定位实体判断当前可以进行位置会话, 则返回移动定位中 心地理信息答复消息;
步骤 S713, 移动定位中心将新定位实体的 IP地址以及端口号封装在启动 定位请求过程响应消息中返回给移动台;
步骤 S714, 移动台收到启动定位请求过程响应消息后, 通过判断发现启 动定位请求过程响应消息中的定位实体与原定位实体不相同,则移动台与新定 位实体进行 IS801位置数据的交互, 重新下载辅助定位数据。 步骤 S715, 新定位实体向移动定位中心返回地理信息响应消息; 步骤 S716, 根据辅助定位数据下载的需要, 重复步骤 S714、 步骤 S715。 其中, 步骤 S716根据辅助定位数据下载的需要重复执行, 当不需要下载 辅助定位数据时, 不需要重复执行。
当然,本发明还可有其它多种实施例,在不背离本发明精神及其实质的情 况下, 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但 这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 工业应用性
在连续定位过程中, 移动台处于不断移动的状态。在移动定位过程中, 移 动台移动的区域有可能发生定位实体辖区的切换,从一个定位实体的区域范围 到另外一个定位实体的区域范围,这时由于定位实体一般保存一定区域内的基 站数据, 且定位实体的 GPS (Global Positioning System , 即全球卫星定位系 统)卫星参考接收设备覆盖范围一般在 600公里左右。如果不进行定位实体的 切换, 将导致在超出某个定位实体辖区时, 定位精度的降低, 甚至定位失败。 通过本方案的实施,移动台通过进行定位实体的切换,重新下载辅助定位数据, 提高了定位精度和定位成功率。

Claims

权利要求书 一种在基于位置的业务中实现连续定位的方法, 移动定位中心通过移 动台当前所在的位置选择交互的定位实体,其特征在于,定位实体发生变化后, 所述移动定位中心向新定位实体发送地理信息请求消息实现对定位实体的切 换, 所述移动台切换定位实体, 并与新定位实体进行位置数据交互。
2、 根据权利要求 1所述的在基于位置的业务中实现连续定位的方法, 其 特征在于,所述连续定位的方法由网络侧发起时,移动定位中心通过移动台发 送的位置报告请求消息中的无线小区参数判断定位实体发生变化,并选择对应 的定位实体。
3、 根据权利要求 2所述的在基于位置的业务中实现连续定位的方法, 其 特征在于, 所述的无线小区参数为系统识别号、 网络识别号、基站标识、 移动 交换机识别号码或网络名称。
4、 根据权利要求 2所述的在基于位置的业务中实现连续定位的方法, 其 特征在于,所述移动台根据位置报告响应消息中的新定位实体的寻址信息进行 定位实体的切换。
5、 根据权利要求 4所述的在基于位置的业务中实现连续定位的方法, 其 特征在于, 所述寻址信息为定位实体的 IP地址和端口号, 或统一资源定位器。
6、 根据权利要求 2、 3、 4或 5所述的在基于位置的业务中实现连续定位 的方法, 其特征在于, 定位实体发生变化后具体包括以下步骤:
步骤 111, 移动定位中心通过无线小区参数选择新定位实体请求, 判断出 新定位实体与原定位实体不相同;
步骤 112, 移动定位中心向原定位实体发起取消定位消息;
步骤 113, 原定位实体收到取消定位消息, 取消位置数据交互, 返回移动 定位中心取消定位响应消息;
步骤 114, 移动定位中心向新定位实体发送地理信息请求消息;
步骤 115, 新定位实体判断当前可以进行位置会话, 返回移动定位中心地 理信息答复消息;
步骤 116, 移动定位中心返回位置报告响应消息给移动台, 所述位置报告 响应消息包含新定位实体的 IP地址及端口号; 步骤 117,移动台收到位置报告响应消息后,通过所述 IP地址及端口号与 新定位实体进行 IS801位置数据的交互, 重新下载辅助定位数据;
步骤 118, 新定位实体向移动定位中心返回地理信息响应消息; 步骤 119, 移动台进行位置的计算, 并上报位置报告请求消息给移动定位 中心;
步骤 120, 移动定位中心判断选择的定位实体没有变化, 返回位置报告响 应消息给移动台;
步骤 121, 移动定位中心将移动台的位置结果通过定位请求报告消息发送 给定位客户机;
根据辅助定位数据下载的需要, 重复步骤 117、 步骤 118;
循环执行步骤 119、 步骤 120和步骤 121。
7、 根据权利要求 6所述的在基于位置的业务中实现连续定位的方法, 其 特征在于, 定位实体发生变化前具体包括以下步骤:
步骤 101 , 定位业务客户机向移动定位中心发起对移动台的定位请求消 步骤 102, 移动定位中心向移动台发送短消息触发定位请求;
步骤 103, 移动台向移动定位中心发起启动定位过程请求消息; 步骤 104, 移动定位中心分配任务标识, 返回定位客户机位置请求答复消 步骤 105, 移动定位中心向原定位实体发送地理信息请求消息; 步骤 106, 原定位实体返回移动定位中心地理信息答复消息;
步骤 107, 移动定位中心返回移动台启动定位请求响应消息, 所述启动定 位请求响应消息包括原定位实体的 IP地址和端口号;
步骤 108, 移动台根据原定位实体的 IP地址和端口号与原定位实体进行 IS801位置数据交互, 下载辅助定位数据;
步骤 109, 定位实体向移动定位中心返回地理信息响应消息;
根据辅助定位数据下载的需要, 重复步骤 108、 步骤 109;
步骤 110, 循环执行步骤 119、 步骤 120和步骤 121。
8、 根据权利要求 1所述的在基于位置的业务中实现连续定位的方法, 其 特征在于,所述连续定位的方法由移动台发起时, 当原定位实体向移动定位中 心返回的地理信息响应消息指示移动台不在服务范围时,移动定位中心发起通 知移动台切换的消息, 并通过无线小区参数判断定位实体发生变化,并选择对 应的定位实体,所述无线小区参数在移动台收到通知切换的消息后发送的启动 定位请求消息中。
9、 根据权利要求 8所述的在基于位置的业务中实现连续定位的方法, 其 特征在于, 所述的无线小区参数为系统识别号、 网络识别号、基站标识、 移动 交换机识别号码或网络名称。
10、根据权利要求 8所述的在基于位置的业务中实现连续定位的方法,其 特征在于,所述移动台根据启动定位请求过程响应消息中的新定位实体的寻址 信息进行定位实体的切换。
11、 根据权利要求 10所述的在基于位置的业务中实现连续定位的方法, 其特征在于, 所述寻址信息为定位实体的 IP地址和端口号, 或统一资源定位 器。
12、根据权利要求 8、 9、 10或 11所述的在基于位置的业务中实现连续定 位的方法, 其特征在于, 定位实体发生变化后具体包括以下步骤:
步骤 209, 原定位实体向移动定位中心返回的地理信息响应消息, 地理信 息响应信息中包含有移动台越出服务区的标志,移动定位中心向原定位实体发 起取消定位请求消息;
步骤 210, 原定位实体收到取消定位请求消息, 取消位置数据交互, 返回 移动定位中心取消定位响应消息;
步骤 211, 移动定位中心向移动台发送一个通知切换的消息;
步骤 212, 移动台发起新的启动定位过程请求;
步骤 213, 移动定位中心向新定位实体发送地理信息请求消息; 步骤 214, 新定位实体判断当前可以进行位置会话, 则返回移动定位中心 地理信息答复消息;
步骤 215, 移动定位中心将启动定位请求过程响应消息返回给移动台; 步骤 216, 移动台收到与新定位实体进行 IS801位置数据的交互, 重新下 载辅助定位数据;
步骤 217, 新定位实体向移动定位中心返回地理信息响应消息; 根据辅助定位数据下载的需要, 重复步骤 216、 步骤 217。
13、 根据权利要求 12所述的在基于位置的业务中实现连续定位的方法, 其特征在于, 定位实体发生变化前具体包括以下步骤:
步骤 201, 移动台发起启动定位过程请求消息;
步骤 202, 移动定位中心向原定位实体发送地理信息请求消息; 步骤 203, 原定位实体返回移动定位中心地理信息答复消息;
步骤 204, 移动定位中心返回移动台启动定位请求响应消息, 所述启动定 位请求响应消息包括原定位实体的 IP地址和端口号;
步骤 205, 移动台根据原定位实体的 IP地址和端口号与原定位实体进行 IS801位置数据交互, 下载辅助定位数据;
步骤 206, 原定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果;
步骤 207, 移动台和原定位实体执行附加的位置数据交互会话, 直到定位 完成;
步骤 208, 原定位实体向移动定位中心返回地理信息响应消息, 返回位置 结果;
根据辅助定位数据下载的需要, 重复执行步骤 207、 步骤 208。
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