CN102469578A - A method and system for realizing positioning service - Google Patents

Abstract

The invention provides a method and a system for realizing positioning service, wherein the method comprises the following steps: the positioning server detects that the positioning related data is changed or updated, and sends a notification message to the positioning terminal, wherein the notification message at least comprises one of the following information: non-positioning indication, positioning related data updating indication, updated data type and validity period of updated data; or the notification message is used to indicate a location related data update. According to the invention, when the positioning server detects or judges the positioning related data change of the server side, the positioning server can inform the positioning terminal based on the safe user plane positioning technology.

Description

A method and system for realizing positioning service

technical field

The present invention relates to the field of communication technology, and in particular to a system and method for realizing a positioning service based on a notification method between a SUPL server and a positioning terminal in a user plane positioning technology (for example, a secure user plane positioning (SUPL) technology).

Background technique

As one of the characteristic services of the mobile communication system, the positioning service has been considered to be a bright spot of the future mobile value-added services. At present, major mobile communication operators in countries and regions such as North America, Europe, Asia Pacific, Japan and South Korea have launched mobile positioning services. The positioning service is the most attractive service in the mobile value-added service, and it is also one of the most complicated services in every link of the industry chain.

LOC (Location Service) is the work of the LIF Forum and the location service in the WAP (Wireless Access Protocol, Wireless Access Protocol) Forum, and the 3GPP (3rd Partner Project) R6 LCS (Location Services, positioning service) was established by merging the third phase of related work. Its purpose is to realize the establishment of interoperable positioning service standards, formulate mobile location service specifications, and ensure end-to-end interoperability. At present, OMA LOC has gradually replaced 3GPP and 3GPP2 in research fields such as roaming and Le interface, and has become the main international standard maker of location service standards. The main work of OMA LOC is to formulate the positioning technology based on the user plane in the mobile communication network, to realize the transmission of relevant positioning parameters in the IP channel in the control plane positioning technology in the past mobile communication network, and then to realize the positioning, and at the same time reduce the need for The dependence on the core network reduces coupling and increases flexibility. With the continuous development of needs, OMA LOC is also gradually studying how to provide positioning services for non-mobile communication networks, such as fixed access positioning, Internet positioning, WLAN (Wireless Local Area Networks, wireless local area network) positioning, etc. .

Judging from the current application of secure user plane-based positioning technology, its main function is to transmit auxiliary positioning parameters related to positioning. However, in SUPL1.0 and SUPL2.0, the transmission of auxiliary positioning data is initiated by the terminal to the server, that is, when the SET (SUPL Enabled Terminal, supports SUPL terminal) terminal needs to be , that is, the SUPL Location Platform (SUPL Location Platform, referred to as SLP) requests auxiliary positioning data. From the perspective of the terminal, when positioning is required, if the local assisted positioning data is valid, the local assisted positioning data can be directly used for positioning instead of using the SUPL server on the network side for assisted positioning calculation.

At present, more and more types of positioning parameters are involved in secure user plane positioning, and the properties of different auxiliary positioning data are different, including: the effective time length of auxiliary positioning data, the variability of the validity of auxiliary positioning data, and the auxiliary positioning data. The applicable range of positioning data, etc. Therefore, the auxiliary positioning data stored locally by the terminal that supports the secure user plane positioning technology may be invalid or less effective, but the terminal itself cannot judge; while on the SUPL server side, it is entirely possible to detect or judge some auxiliary positioning data by itself. Data, or other location information changes, but at this time it is unable to notify the positioning terminal in time.

From the perspective of the target's secure user plane positioning technology, it includes several messages, including SUPL INIT (initialization) message, SUPL POS INIT (positioning initialization) message, SUPL START (startup) message, SUPL RESPONSE (response) message and other messages. These messages are designed for the network side to actively initiate positioning (including the transmission of assisted positioning data) and the terminal side to actively initiate positioning (including the transmission of assisted positioning data). Judging from the current technology, none of the above-mentioned problems can be solved, that is, when the SUPL server detects or determines that the auxiliary positioning data or other location information has changed, the auxiliary positioning data cannot be completed and the server directly notifies the terminal.

Introduction to existing technology

At present, according to the Secure User Plane Positioning Technology (SUPL) defined by the Positioning Group (LOC) of the Open Mobile Alliance (OMA), the positioning system is mainly composed of three functional entities, namely the SUPL Positioning Service Agent (SUPL Agent), and the SUPL Server ( SLP) and SUPL-capable terminals (SET).

In the SUPL positioning system, the relationship between the above three functional entities is shown in Figure 1. The following introduces the principle of the existing SUPL positioning technology in conjunction with accompanying drawing 1:

The SET terminal is the terminal to be located. It establishes a SUPL positioning session connection with the SUPL positioning platform through UDP (User Datagram Protocol)/IP. The corresponding functional interface is the Lup interface, and the protocol is the SUPL protocol. Through the SUPL protocol, the location information of the SET terminal can be obtained.

The SET terminal can include an MLS (Mobile Location Service, mobile location service) application, or a SUPL agent. Both the MLS application and the SUPL agent can request the SET terminal to perform positioning services through the private interface on the mobile terminal or the interface conforming to the MLP (Mobile Location Protocol, Mobile Location Protocol) protocol.

The Le/L1 interface is between the SUPL positioning platform and the mobile positioning application\SUPL agent on the network side, and the protocol is the MLP protocol or LOCSIP (location protocol based on call session protocol). The function is: the third-party application system\SUPL agent requests the SET terminal service from the SUPL positioning platform through the Le/L1 interface.

The SUPL positioning platform includes two functional entities, namely: SUPL Location Center (SLC) and SUPL Positioning Center (SPC). When the SUPL positioning platform works in a non-agent mode, the SLC and SPC are separated, and there is a separate interface relationship with the SET terminal; when the SUPL positioning platform works in a convenient manner, there is only one functional interface between the SUPL positioning platform and the SET terminal , that is, the interface between SLC and SET terminal, there is no interface between SPC and SET, SLC acts as the agent of SPC and SET terminal, and the interface between SLC and SPC is LIP. Due to the roaming of SET terminals, the SUPL positioning platform may act as: roaming positioning platform, request positioning platform, home location positioning platform, emergency positioning platform and other functions. The corresponding SLC and SPC also have these functional roles. In addition to the above, the SUPL positioning platform also supports other interfaces, such as: roaming interface between platforms, interface between platform and computing server, interface between platform and privacy server, interface between platform and network layer.

The SUPL agent can provide the application with a function of accessing the positioning service, and is the first service access point provided externally by the positioning service system. The application requests to locate one or more SET terminals through the SUPL agent.

Above, the basic principles of the current OMA SUPL architecture are introduced. In conjunction with FIG. 2 , the following introduces the technology and process of transmitting auxiliary positioning data between the SUPL server SLP on the network side and the target positioning terminal SET actively initiated by the SUPL technology in the current SUPL technology.

As shown in Figure 2, in the positioning session actively initiated by the network side, the SUPL POS message is used to transmit the auxiliary positioning data, where the SUPL agent may be located on the target terminal or on the network side. The detailed process is as follows:

Step 1: The data link between the SUPL server and the terminal has been maintained or restored;

Step 2: The target terminal sends a SUPL POS INIT message to the SUPL server, which includes the required assisted positioning data type information, such as: GPS (Global Positioning System, Global Positioning System) assisted positioning data or GNSS (Global Navigation Satellite System, global satellite navigation system) auxiliary positioning data;

Step 3: Several SUPL POS messages are exchanged between the SUPL server and the terminal;

Step 4: continue to conduct other positioning sessions between the SUPL server and the terminal, or end the positioning session.

When the SLP on the network side initiates a trigger-based positioning service with the target positioning terminal SET, multiple rounds of auxiliary positioning data transmission can be initiated between the SUPL server and the terminal, and the process is similar to the flow chart in Figure 2. I won't repeat them here.

It can be seen from the above prior art that the current SUPL positioning technology supports single or multiple (request-response) transmission of positioning data between the SLP and the SET terminal. However, according to the technical requirement that the network-side SUPL server proactively notifies the target positioning terminal and the target terminal actively initiates the acquisition of auxiliary positioning data proposed in the background art, the existing technology still cannot solve the problem.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and system for implementing positioning services, so as to detect or judge changes in positioning-related data on the server side at the SUPL server, and notify the terminal based on secure user plane positioning technology.

In order to solve the above technical problems, the present invention provides a method for realizing positioning services, including:

The positioning server detects the change or update of positioning-related data, and sends a notification message to the positioning terminal,

The notification message includes at least one of the following information: non-positioning indication, positioning-related data update indication, updated data type, and validity period of updated data; or the notification message is used to indicate that positioning-related data is updated.

Further, the above-mentioned method also has the following characteristics: it also includes:

After receiving the notification message, the positioning terminal sends a request message for requesting acquisition of positioning-related data to the positioning server;

After receiving the request message, the positioning server sends corresponding positioning-related data to the positioning terminal.

Furthermore, the above method also has the following characteristics:

The request message is a secure user plane positioning protocol positioning initial message or a secure user plane positioning protocol start message.

Further, the above method also has the following characteristics: the notification message is an initial message of a secure user plane positioning protocol.

Further, the above method also has the following features: the positioning-related data includes: auxiliary positioning data or positioning capability information.

Furthermore, the above method also has the following characteristics:

The positioning server is a server supporting a secure user plane positioning protocol;

The positioning terminal is a terminal supporting a secure user plane positioning protocol.

In order to solve the above problems, the present invention also provides a system for realizing positioning services, including: a positioning server and a positioning terminal, wherein,

The positioning server is configured to detect a change or update of positioning-related data, and send a notification message to the positioning terminal,

The notification message includes at least one of the following information: non-positioning indication, positioning-related data update indication, updated data type, and validity period of the updated data; or the notification message is used to indicate that the positioning-related data is updated.

Further, the above-mentioned system also has the following characteristics:

The positioning terminal is configured to, after receiving the notification message, send a request message for requesting acquisition of positioning-related data to the positioning server;

The positioning server is further configured to send corresponding positioning-related data to the positioning terminal after receiving the request message.

Further, the above-mentioned system also has the following characteristics:

The request message is a secure user plane positioning protocol positioning initial message or a secure user plane positioning protocol start message.

Furthermore, the above system also has the following characteristics: the notification message is an initial message of a secure user plane positioning protocol.

Further, the above system also has the following feature: the positioning-related data includes: auxiliary positioning data or positioning capability information.

Further, the above-mentioned system also has the following characteristics:

The positioning server is a server supporting a secure user plane positioning protocol;

The positioning terminal is a terminal supporting a secure user plane positioning protocol.

To sum up, the present invention provides a method and system for realizing positioning services, which realizes that when the positioning server detects or judges changes in positioning-related data on the server side, it notifies the positioning terminal based on the secure user plane positioning technology, and also provides how the terminal uses the secure user. The surface positioning technology obtains positioning related data from the server.

Description of drawings

FIG. 1 is a SUPL positioning architecture diagram of the prior art;

FIG. 2 is a flow chart of the terminal side initiating auxiliary data transmission in the prior art;

FIG. 3 is a schematic diagram of a system for realizing positioning services according to the present invention;

Fig. 4 is a flowchart diagram of a method for realizing a positioning service in the present invention;

FIG. 5 is a flowchart of Embodiment 1 of the present invention;

Fig. 6 is a flow chart of Embodiment 2 of the present invention.

Detailed ways

A system for implementing positioning services provided by the present invention, as shown in FIG. 3 , includes: a positioning server and a positioning terminal, wherein,

The positioning server is configured to send a message to the positioning terminal by establishing or restoring a connection with the positioning terminal, or using a connection already established with the positioning terminal, if it judges or detects a change or update of the positioning-related data. notification message.

The notification message includes at least one of the following indication information: non-location indication, positioning related data update indication, updated data type, validity period of updated data, etc.; or, the notification message does not carry any information, and the notification message Used to indicate location-related data updates.

The notification message may be a certain message in the SUPL protocol, such as a SUPL INIT message.

Further, the positioning terminal is configured to, after receiving the notification message, send a request message for requesting acquisition of positioning-related data to the positioning server, for example, the request message includes an instruction for acquiring positioning-related data;

The positioning server is further configured to send corresponding positioning-related data to the positioning terminal after receiving the request message.

In this way, the terminal can obtain the changed or updated location-related data, so as to realize the location service.

The request message can be a certain message in the SUPL protocol, such as a SUPL POS INIT message or a SUPL START message.

Wherein, the positioning-related data includes: auxiliary positioning data or positioning capability information.

The positioning capability information includes: for example, the positioning method supported by the terminal, the positioning data format recognized by the terminal, the satellite navigation system supported by the terminal, and other information.

The positioning server of the present invention is a server supporting the SUPL protocol, and the positioning terminal is a terminal supporting the SUPL protocol.

The positioning terminal of the present invention may include various network elements supporting SUPL on the network side.

The present invention also provides a method for realizing the positioning service, including: if the positioning server judges or detects that the positioning-related data changes or updates, it can establish or restore the connection with the positioning terminal, or use the connection that has been established with the positioning terminal. The positioning terminal sends a notification message.

In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The method of the present invention will be described below with reference to FIG. 4 .

Step 10: The positioning server judges or detects that there is updated positioning-related data;

The positioning server, such as a server supporting the SUPL protocol (called a SUPL server), can be connected to the auxiliary positioning data source, actively obtain the auxiliary data, and then judge or detect whether the auxiliary positioning data has changed; or, the positioning server can also obtain it from the auxiliary data source. Corresponding change notification to determine the change of auxiliary data.

Alternatively, the positioning server may detect a change in its own capability, for example, information about the positioning capability.

Step 20: The positioning server sends a notification message to the positioning terminal;

The notification message may include one of the following indications:

1. Non-location indication, this message is not used for location requests;

2. There is an indication of updated positioning-related data on the server side, for example, an indication of updating auxiliary positioning data;

3. The updated data type;

4. Update the validity period of the data.

The update notification message is used to indicate that the location-related data on the server side is updated.

Specifically, after judging or detecting that the auxiliary data has been changed, the positioning server sends a notification message to the terminal, and the notification message includes at least one of the above two indication information.

The notification message can be implemented by using a certain message in the SUPL protocol, such as the SUPL INIT message.

Step 30: The positioning terminal sends a request message to the positioning server, and the request message includes: an instruction to request to acquire updated positioning-related data;

Specifically, after receiving the notification message in step 20, the terminal may immediately request corresponding updated positioning related data from the positioning server; or, the terminal may also request corresponding updated positioning related data from the positioning server when needed.

The request message can be implemented using a certain message of the SUPL protocol, for example, SUPL POS INIT message, SUPL START message.

Step 40: The positioning server transmits the updated positioning-related data to the terminal;

Specifically, after receiving the request message from the terminal, the positioning server communicates with the terminal, and transmits corresponding updated positioning-related data, such as auxiliary positioning data, to the positioning terminal.

Embodiment 1 of the present invention will be described below in conjunction with FIG. 5. In Embodiment 1 of the present invention, after receiving the notification message of updating the auxiliary data from the positioning server, the positioning terminal immediately initiates the process of obtaining auxiliary positioning data from the positioning server. Described as follows:

Step 101: the positioning server requests auxiliary data from an auxiliary positioning data source;

Step 102: The auxiliary positioning data source returns the auxiliary positioning data;

Step 103: The positioning server performs calculations based on the obtained auxiliary positioning data and previously stored auxiliary positioning data locally, and judges whether the auxiliary positioning data source has been updated. If there is an update, proceed to step 104; otherwise, the process ends;

Step 104: The positioning server sends a SUPL INIT message to the terminal, and the SUPL INIT message includes two identification information: a non-positioning indication and an auxiliary positioning data update indication, and the message is used to indicate to the terminal that there is an auxiliary positioning data update on the positioning server side;

Step 105: After receiving the message in step 104, the positioning terminal sends a SUPL POS INIT message to the positioning server, and the message includes: an indication of requesting to obtain updated auxiliary positioning data, which is used to request the SUPL server to obtain updated auxiliary positioning data ;

Step 106: The positioning server exchanges several SUPL POS (positioning) messages with the terminal, and transmits the auxiliary positioning data from the SUPL server to the terminal;

Step 107: The positioning server sends a SUPL END (end) message to the positioning terminal to end the positioning session. The process ends.

Embodiment 2 of the present invention will be described below in conjunction with FIG. 5. In Embodiment 2 of the present invention, after receiving the assistance data update notification message from the positioning server, the positioning terminal does not immediately request the auxiliary positioning data from the positioning server, but When positioning is required, request positioning data from the positioning server. The specific description is as follows:

Step 201: the positioning server requests auxiliary data from an auxiliary positioning data source;

Step 202: The auxiliary positioning data source returns the auxiliary positioning data;

Step 203: The positioning server performs calculations based on the obtained auxiliary positioning data and the previously stored auxiliary positioning data locally, and judges whether the auxiliary positioning data source has been updated. If there is an update, proceed to step 204; otherwise, the process ends;

Step 205: The positioning server sends a SUPL INIT message to the terminal, and the SUPL INIT message includes two identification information: a non-positioning indication and/or an auxiliary positioning data update indication, and the message is used to indicate to the terminal that there is an auxiliary positioning data update on the positioning server side ;

Step 206: After receiving the message in step 204, the terminal sends a SUPL END message to end the SUPL session. At this point, the terminal has learned that the positioning server has updated auxiliary positioning data.

Step 207: When the terminal needs to perform positioning, based on the instructions of step 204, it is judged that the local auxiliary positioning data is invalid. At this time, re-establish the session connection with the positioning server, and request the auxiliary positioning data. In this step, the SUPL START message may be used, and the message includes: requesting the instruction information of the updated auxiliary positioning data.

Step 208: The positioning server sends a SUPL RESPONSE message to the terminal as a response;

Step 209: The positioning server exchanges several SUPL POS messages with the terminal, and transmits the auxiliary positioning data from the SUPL server to the terminal;

Step 210: The positioning terminal sends a SUPL END message to the positioning server to end the positioning session, and the process ends.

The above are only preferred embodiments of the present invention. Of course, the present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various Corresponding changes and modifications, but these corresponding changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (12)

1. method that realizes positioning service comprises:

Location-server detects the location related data to be changed or renewal, send a notification message to locating terminal,

Said notification message comprises a kind of in the following information at least: the term of validity that the indication of non-location, location related data are upgraded indication, data updated type, Updated Information; Perhaps said notification message is used for indication location related data to be upgraded.

2. the method for claim 1 is characterized in that: also comprise:

After said locating terminal receives said notification message, send the request message that is used for acquisition request location related data to said location-server;

After said location-server receives described request message, will locate related data accordingly and send to said locating terminal.

3. method as claimed in claim 2 is characterized in that:

Described request message is secure user plane location protocol location initial message or secure user plane location protocol initiation message.

4. like each described method of claim 1-3, it is characterized in that:

Said notification message is a secure user plane location protocol initial message.

5. like each described method of claim 1-3, it is characterized in that:

Said location related data comprises: auxiliary positioning data or stationkeeping ability information.

6. like each described method of claim 1-3, it is characterized in that:

Said location-server is for supporting the server of secure user plane location protocol;

Said locating terminal is for supporting the terminal of secure user plane location protocol.

7. system that realizes positioning service comprises: location-server and locating terminal, wherein,

Said location-server is used to detect the location related data and changes or renewal, sends a notification message to said locating terminal,

Said notification message comprises a kind of in the following information at least: the indication of non-location, location related data are upgraded the term of validity of indication, data updated type, data updated; Perhaps said notification message is used for indication location related data to be upgraded.

8. system as claimed in claim 7 is characterized in that:

Said locating terminal, be used to receive said notification message after, send the request message that is used for acquisition request location related data to said location-server;

Said location-server after also being used to receive described request message, will be located related data accordingly and send to said locating terminal.

9. system as claimed in claim 8 is characterized in that:

Described request message is secure user plane location protocol location initial message or secure user plane location protocol initiation message.

10. like each described system of claim 7-9, it is characterized in that:

Said notification message is a secure user plane location protocol initial message.

11., it is characterized in that like each described system of claim 7-9:

Said location related data comprises: auxiliary positioning data or stationkeeping ability information.

12., it is characterized in that like each described system of claim 7-9:

Said location-server is for supporting the server of secure user plane location protocol;

Said locating terminal is for supporting the terminal of secure user plane location protocol.

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