CN100466813C - A method for triggering and positioning a mobile terminal - Google Patents

Abstract

The invention discloses a method for triggering positioning of a mobile terminal. When the positioning interaction between the positioning platform and the target terminal starts, the method further includes: judging whether there is an Internet protocol connection between the positioning platform and the target terminal, and if not, then First establish the connection between the positioning platform and the target terminal, and then perform positioning interaction, otherwise directly perform positioning interaction; before the positioning interaction between the positioning platform and the target terminal ends, the method further includes: B. Judging whether it is necessary to maintain the positioning platform and the target terminal The current connection between the target terminal, if necessary, maintain the current connection between the positioning platform and the target terminal, otherwise, disconnect the current connection between the positioning platform and the target terminal. By adopting the technical scheme provided by the present invention, the connection efficiency and positioning efficiency during positioning interaction are improved, and system resources of the positioning platform and the target terminal are avoided from being wasted.

Description

A method for triggering and positioning a mobile terminal

technical field

The invention relates to mobile positioning technology, in particular to a method for triggering positioning of a mobile terminal.

Background technique

The mobile communication location service obtains the location information of the target terminal through certain technologies, and uses the location information in many aspects such as emergency rescue, vehicle navigation and intelligent transportation system, work scheduling and team management, mobile yellow page query, and network performance enhancement.

In some applications, a location initiation client in a Safe User Plane-based mobile location (SUPL, Safe User PlaneLocation) system needs to trigger location of a target terminal. Triggered positioning includes periodic triggered positioning and area triggered positioning. In periodic triggered positioning, the positioning initiating client specifies the start time, end time and period of positioning in the trigger positioning request submitted to the Home SUPL Location Platform (H-SLP, Home SUPL Location Platform), where the end time can be determined by the duration to replace. The positioning interaction between the H-SLP and the target terminal is initiated periodically, and the position of the target terminal is reported to the positioning initiating client after acquiring the position of the target terminal each time. In area-triggered positioning, the positioning initiating client specifies the start time of monitoring the location of the target terminal and the area triggering conditions in the triggered positioning request submitted to the H-SLP, and the H-SLP or the target terminal determines where the positioning interaction between them should be. It is initiated at any time; each positioning interaction obtains the position of the target terminal once, and if the acquired position of the target terminal meets the area trigger condition proposed by the positioning initiating client in triggering the positioning request, report the position of the target terminal to the positioning initiating client .

In trigger positioning, the H-SLP can judge whether the trigger positioning conditions are satisfied and then decide whether to initiate positioning interaction, that is, the trigger is located in the H-SLP; the target terminal can also judge whether the trigger positioning conditions are satisfied and then decide whether to initiate positioning Interactive, that is, the trigger is on the target terminal. Accordingly, location triggers can be divided into network triggers and terminal triggers from another perspective.

In the prior art, no matter in the periodic triggered positioning or in the area triggered positioning, and whether the positioning interaction is triggered by the network or the terminal, at the beginning of each positioning interaction between the H-SLP and the target terminal, the target All terminals need to establish an Internet Protocol (IP, Internet Protocol) connection with the H-SLP; after each positioning interaction, the target terminal and the H-SLP will release the IP connection between each other, and release all information related to this positioning. Session-related resources. In particular, for network triggering, when the positioning interaction between the H-SLP and the target terminal starts, the H-SLP also needs to pass the Short Message Service (SMS, Short Message Service) or the Wireless Access Protocol (WAP, Wireless Access Protocol) first. Protocol) in a manner with poor real-time performance, sends a positioning initialization message to the target terminal, and then the target terminal will start to establish an IP connection with the H-SLP.

The disadvantage of the prior art is that, on the one hand, if the time interval between positioning interactions is very short, the IP connection needs to be re-established at the beginning of each positioning interaction, and its connection efficiency is very low; especially for network triggering Specifically, when the next positioning interaction starts, the H-SLP has to send a positioning initialization message through a non-real-time SMS or WAP mode, which reduces positioning efficiency. On the other hand, if the target terminal always maintains an IP connection with the H-SLP, although the efficiency can be improved, the duration of the triggering positioning task is longer, and the interval between each two positioning interactions in the triggering positioning task is also longer If the target terminal maintains IP connection with H-SLP for a long time, the load on both parties will be greatly increased and system resources will be wasted.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for triggering and positioning a mobile terminal, which not only improves connection efficiency and positioning efficiency, but also avoids wasting system resources of H-SLP and target terminal.

In order to achieve the above object, the present invention provides a method for triggering positioning of a mobile terminal. When the positioning interaction between the positioning platform and the target terminal starts, the method further includes the following steps:

A. Determine whether there is an Internet protocol connection between the positioning platform and the target terminal, if not, first establish a connection between the positioning platform and the target terminal, and then perform positioning interaction, otherwise directly perform positioning interaction;

Before the positioning interaction between the positioning platform and the target terminal ends, the method further includes the following steps:

B. If it is determined that the next positioning interaction between the positioning platform and the target terminal is performed within the preset time threshold, or it is determined that the preset waiting time has not been reached, or it is determined that the preset disconnection time has not arrives, then maintain the current connection between the positioning platform and the target terminal, otherwise, disconnect the current connection between the positioning platform and the target terminal.

The method further includes:

Before the initialization phase of triggering positioning ends, if it is determined that the first positioning interaction between the positioning platform and the target terminal is performed within the preset time threshold, or, it is determined that the preset waiting time has not been reached, or, it is determined If the preset disconnection time is not reached, the current connection between the positioning platform and the target terminal is maintained; otherwise, the current connection between the positioning platform and the target terminal is disconnected.

Wherein, the judgment in step A is performed by the positioning platform;

The connection between the positioning platform and the target terminal is established first as described in step A, and then the positioning interaction is performed as follows:

The positioning platform notifies the target terminal to prepare for positioning interaction through short message service or wireless access protocol. After receiving the notification, the target terminal establishes a connection with the positioning platform, and then the positioning platform and the target terminal perform positioning interaction through the established connection;

Direct positioning interaction described in step A is:

The positioning platform notifies the target terminal to prepare for positioning interaction through the Internet protocol connection, and then the positioning platform and the target terminal perform positioning interaction through the Internet protocol connection.

Wherein, the judgment in step A is performed by the target terminal;

The connection between the establishment of the positioning platform and the target terminal described in step A is:

The target terminal establishes a connection with the positioning platform.

Wherein, the time threshold is preset, and the determination that the next positioning interaction between the positioning platform and the target terminal is performed within the preset time threshold is:

It is judged whether the next positioning interaction will be performed within the time threshold from the current moment, if yes, it is judged that the current connection between the positioning platform and the target terminal needs to be maintained, otherwise it is judged that it is unnecessary.

Wherein, the waiting time length is set, and it is determined that the waiting time length set in advance does not arrive as:

Start timing from the current moment, and judge whether the waiting time is reached. If not, it is considered that the current connection between the positioning platform and the target terminal needs to be maintained.

Wherein, the determination that the preset disconnection moment has not been reached is:

Set the disconnection time and judge whether the disconnection time is reached. If not, it is considered that the current connection between the positioning platform and the target terminal needs to be maintained.

Wherein, the set waiting period is:

The positioning platform and the target terminal agree on the waiting time in advance;

or

The positioning platform determines the waiting time at the end of the initialization phase of triggering positioning, and notifies the target terminal of the waiting time;

or

The positioning platform determines the waiting time when the positioning interaction ends, and notifies the target terminal of the waiting time;

or

The target terminal determines the waiting time when the positioning interaction ends, and notifies the waiting time to the positioning platform.

Wherein, the current connection between the maintaining or disconnecting the positioning platform and the target terminal is:

The positioning platform notifies the target terminal to maintain or disconnect the current connection, and the positioning platform itself also maintains or disconnects the current connection.

Wherein, the current connection between the maintaining or disconnecting the positioning platform and the target terminal is:

The target terminal notifies the positioning platform to maintain or disconnect the current connection, and the target terminal itself also maintains or disconnects the current connection.

Wherein, in step B, when disconnecting the current connection between the positioning platform and the target terminal, the method further includes:

The positioning platform and the target terminal respectively release resources related to this triggered positioning.

With the technical solution provided by the present invention, if the H-SLP needs to perform multiple positioning interactions with the target terminal in one trigger positioning, after the initialization phase ends and each positioning interaction ends, the H-SLP will be kept or disconnected according to the specific situation. The current IP connection between the SLP and the target terminal. In this way, if the time interval between two positioning interactions is very short, both the H-SLP and the target terminal maintain the current IP connection to improve positioning efficiency; if the trigger positioning task lasts for a long time, and the time between two positioning interactions The interval is also relatively long, so between two positioning interactions, both the H-SLP and the target terminal disconnect the IP connection and release related resources, which can save system resources and reduce the burden on both parties.

Description of drawings

FIG. 1 is a flow chart of Embodiment 1 of a method for triggering and locating a mobile terminal provided by the present invention.

FIG. 2 is a flow chart of Embodiment 2 of the method for triggering and locating a mobile terminal provided by the present invention.

Detailed ways

The core idea of the present invention is: in one trigger positioning, if the H-SLP needs to perform multiple positioning interactions with the target terminal, after the initialization phase ends and after each positioning interaction ends, first determine whether it is necessary to maintain the H-SLP and the target terminal. The current IP connection between the target terminals, if necessary, both the H-SLP and the target terminal maintain the current IP connection.

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The difference between periodic triggered positioning and area triggered positioning is that the positioning interaction start time of periodic triggered positioning is specified by the positioning initiating client, while the positioning interaction start time of area triggered positioning is determined by the H-SLP or the target terminal as needed; Periodically triggered positioning will report the location of the target terminal acquired by the positioning interaction to the positioning initiating client at the end of each positioning interaction, while area-triggered positioning can only be obtained when the target terminal position obtained by the positioning interaction matches the area proposed by the positioning initiating client When the condition is triggered, the location of the target terminal is reported to the positioning initiating client. These differences between periodic triggered positioning and area triggered positioning do not make much difference in the implementation of the method for triggering positioning of a mobile terminal provided by the present invention. Therefore, in the following, the specific implementation of the technical solution provided by the present invention will be described respectively based on whether the trigger is located in the network or in the terminal, and each embodiment simultaneously illustrates the situation of periodic triggered positioning and area triggered positioning.

Please refer to FIG. 1 , which is a flow chart of Embodiment 1 of a method for triggering and locating a mobile terminal provided by the present invention. In this embodiment, the trigger is located in the H-SLP.

Step 101, the location initiating client sends a Mobile Location Protocol Triggered Location Reporting Request (MLP TLRR, Mobile Location Protocol Triggered Location Reporting Request) to the H-SLP.

The MLP TLRR message at least includes the identification of the positioning originating client and the identification of the target terminal.

If the positioning initiating client requires periodic triggered positioning of the target terminal, the message may also include the start time and/or end time and/or interval time of the periodic positioning, where the end time may be replaced by a duration.

If the positioning initiating client requires area-triggered positioning of the target terminal, the message may also include the start time of monitoring the location of the target terminal and/or the area trigger condition.

Step 102, the H-SLP performs authentication, privacy check and routing check.

The purpose of authentication is to determine whether the positioning initiating client has the right to use the requested positioning service.

The purpose of the privacy check is to determine whether the location initiating client has the right to request the location service from the H-SLP to obtain the location of the target terminal.

If the positioning initiating client does not have the right to request the positioning service, it will return an MLP Triggered Location Reporting Answer (TLRA, Triggered Location Reporting Answer) message to the positioning initiating client, and use the result parameter in the message to notify the positioning initiating terminal to trigger the positioning request this cycle got rejected. If the positioning initiating client has the right to request the positioning service, step 103 is performed.

The purpose of the routing check is to determine that the target terminal is in a non-roaming state, and to determine that the terminal supports SUPL trigger positioning.

Step 103, H-SLP uses Short Message Service (SMS, Short Message Service) or Wireless Access Protocol (WAP, Wireless Access Protocol) to send a SUPL positioning initialization (SUPL INIT) message to the target terminal, informing the target terminal that there is a trigger positioning The request requires confirmation from the target terminal.

The message at least includes a positioning method, a positioning type, and a trigger mode, where the trigger mode indicates whether the trigger is located on the H-SLP or the target terminal.

Step 104, the target terminal binds itself to the data network, and establishes an IP connection with the H-SLP.

Step 105, if the target terminal agrees to the periodic trigger location request, and supports the location method, location type, and trigger mode specified in the SUPL INIT message, it sends a SUPL TRIGGERED START (SUPL TRIGGERED START) message to the H-SLP. At least include the terminal capability parameters and the result of the terminal confirming the positioning notification. Terminal capabilities include: positioning methods supported by target terminals, such as: terminal-assisted Assisted Global Positioning System (A-GPS, Assisted Global Positioning System) positioning methods, terminal-based A-GPS positioning methods, etc.; and related positioning protocols, such as: wireless Resource Location Service Protocol (RRLP, Radio Resource Location service Protocol), Radio Resource Control (RRC, Radio Resource Control) protocol, Telecommunications Industry Association (TIA, Telecommunications Industries Association)-801 protocol, etc.

If the target terminal does not agree with the periodic trigger location request, the target terminal sends a SUPL end (SUPL END) message to the H-SLP, and releases the IP connection and related resources with the H-SLP, and then performs step 107.

Step 106, when the target terminal agrees to the triggered positioning request, the H-SLP returns a SUPL TRIGGERED RESPONSE message to the target terminal.

The message at least includes the finally determined positioning method for the positioning session and an identifier uniquely indicating this trigger positioning.

If the first positioning interaction between the H-SLP and the target terminal does not begin soon, the H-SLP disconnects the current IP connection and releases relevant resources after sending SUPL TRIGGERED RESPONSE; the target terminal receives the SUPL TRIGGERED RESPONSE Also disconnect the current IP connection and release related resources. Conversely, if the positioning interaction between the H-SLP and the target terminal needs to start soon, the H-SLP includes a preset flag field in the message, which is used to instruct the target terminal to maintain the current IP connection; at the same time, the H-SLP It also maintains the current IP connection itself.

In order to judge whether the positioning interaction between the H-SLP and the target terminal will start soon, a time threshold can be set in advance. If the timing starts from the current time, the positioning between the H-SLP and the target terminal will be performed within the time threshold interaction, then it is judged that the positioning interaction between the H-SLP and the target terminal will start soon.

In step 107, the H-SLP returns an MLP Triggered Location Reporting Answer (TLRA, Triggered Location Reporting Answer) message to the location initiating client, indicating that the triggered location request proposed by the location initiating client is accepted by the target terminal.

If in step 105, the target terminal refuses to trigger the location request, the MLP TLRA message includes a result parameter to identify the reason for the location failure.

Step 108, the H-SLP sends a SUPL trigger initialization (SUPL TRIGGERED INIT) message to the target terminal when it needs to perform positioning interaction with the target terminal according to the trigger condition proposed by the positioning initiating client in the MLP TLRR message.

The SUPL TRIGGERED INIT message at least includes the identifier uniquely identifying this trigger location described in step 106. If a valid IP connection is maintained between the H-SLP and the SET, the H-SLP can directly use the connection to send the SUPL TRIGGERED INIT message to the target terminal, otherwise the H-SLP sends the message to the target terminal through SMS or WAP.

Step 109, the target terminal sends a SUPL positioning initialization (SUPL POS IN IT) message to the H-SLP to start positioning interaction with the H-SLP.

Step 110, the H-SLP performs positioning interaction with the target terminal to obtain the location of the target terminal.

Step 111, the H-SLP sends a SUPL positioning end (SUPL POS END) message to the target terminal to end the current positioning interaction.

If the next positioning interaction between the H-SLP and the target terminal does not begin soon, the H-SLP disconnects the current IP connection and releases relevant resources after sending the SUPL POS END message; the target terminal receives the SUPL POS END message After that, the current IP connection is also disconnected and related resources are released. Conversely, if the next positioning interaction between the H-SLP and the target terminal needs to start soon, the H-SLP includes a preset flag field in the SUPL POS END message, which is used to indicate that the target terminal maintains the current IP; at the same time, The H-SLP itself also maintains the current IP connection.

For the situation of periodically triggered positioning, the H-SLP also sends an MLP Triggered Location Report (TLREP, Triggered Location Report) message to the positioning initiating client to notify the positioning initiating client of the location of the target terminal. For the situation of area-triggered positioning, H-SLP first judges whether the target terminal position obtained in step 110 meets the area trigger condition set by the positioning initiating terminal in the MLP TLRR message, and if so, sends the MLP TLREP message to the positioning initiating client to send The position of the target terminal is notified to the positioning initiating client.

Step 112: Repeat steps 108 to 111 several times according to the trigger location condition proposed by the location initiating client in the MLP TLRR message.

Step 113, after the last execution of step 110 to obtain the location of the target terminal, the H-SLP sends a SUPL END message to the target terminal and disconnects the IP connection with the target terminal; the H-SLP can also send an MLP to the positioning initiating client The TLREP message notifies the positioning initiating client of the location of the target terminal; the H-SLP releases resources related to this triggered positioning.

After receiving the SUPL END message, the target terminal disconnects the IP connection with the H-SLP, and releases the resources related to this triggered positioning.

In step 106 and step 111, the H-SLP instructs the target terminal to maintain the current IP connection by including a preset flag field in the SUPL TRIGGEREDRESPONSE message and the SUPL POS END message respectively. As a first alternative, H-SLP may include a time parameter in the SUPLTRIGGERED RESPONSE message and SUPL POS END message instead of indicating the target terminal to maintain the current IP connection parameter to decide whether to disconnect the current IP connection and release related resources. The time parameter can be an absolute time value or a time length value. If the time parameter is an absolute time value, the parameter can be called the disconnection time. When the target terminal arrives at the absolute time, if it does not receive the SUPLTRIGGERED INIT message sent by the H-SLP for initiating a new positioning interaction, Then disconnect the current IP connection and release related resources; if the time parameter is the value of the time length, then this parameter can be called the waiting time length, and the target terminal starts counting after receiving the SUPLTRIGGERED RESPONSE message and the SUPL POS END message. If the SUPL TRIGGERED INIT message for initiating a new positioning interaction is not received from the H-SLP before this period of time, the current IP connection is disconnected and related resources are released. The above time parameter can also be used to indicate whether the H-SLP itself disconnects the current IP connection and releases related resources. As a second alternative, the H-SLP and the target terminal can agree on the waiting time in advance. If the H-SLP includes a flag field for instructing the target terminal to maintain the current IP connection in the SUPL TRIGGERED RESPONSE message or SUPL POSEND message, Then the H-SLP and the target terminal both maintain the current IP connection before the waiting time is reached. As a third alternative, the H-SLP and the target terminal can agree on the waiting time in advance. After the SUPLTRIGGERED RESPONSE message or the SUPL POS END message, both the H-SLP and the target terminal will maintain the current IP connection by default until the waiting time is reached. In the third alternative solution, the H-SLP does not need to judge whether the next positioning interaction will start soon. As a fourth alternative, H-SLP can include a preset flag field in SUPL TRIGGERED RESPONSE to indicate that the target terminal will maintain the current IP connection from the current moment until the end of the entire triggered positioning process, or indicate that the target terminal From the first positioning interaction, the terminal maintains the IP connection established at the beginning of the first positioning interaction until the end of the entire triggered positioning process; or the H-SLP can include the SUPL TRIGGERED RESPONSE in the first alternative. The waiting time mentioned above is used to instruct the target terminal to decide whether to disconnect according to the waiting time after receiving the SUPL TRIGGERED RESPONSE message and after each subsequent positioning interaction ends.

Please refer to FIG. 2 . FIG. 2 is a flowchart of Embodiment 2 of a method for triggering and locating a mobile terminal provided by the present invention. In this embodiment, the trigger is located at the target terminal.

In FIG. 1 , steps 101 to 107 may be referred to as an initialization phase of trigger positioning. For the case where the trigger is located at the target terminal, the steps in the initialization phase, that is, steps 201 to 207, are basically the same as the steps in the initialization phase when the trigger is located in the H-SLP. There are two differences: first, in this implementation In step 206 of the example, when the H-SLP sends a SUPLTRIGGERED RESPONSE message to the target terminal, for periodic triggered positioning, the message also carries the start time, end time and interval time of periodic triggered positioning. The end time can be replaced by the duration; for area trigger positioning, the message also carries the start time of monitoring the location of the target terminal and the area trigger condition. Secondly, in step 206 of this embodiment, since it is the target terminal that decides when to perform positioning interaction rather than the H-SLP, the H-SLP cannot indicate The target terminal maintains the current IP connection. Other same steps are not repeated here.

Step 208, the target terminal judges whether an effective IP connection has been maintained with the H-SLP, and if so, directly sends a SUPL POS INIT message to the H-SLP to start positioning interaction with the H-SLP; - IP connection between SLPs, and then send SUPL POSINIT message to H-SLP to start positioning interaction with H-SLP.

In step 209, the H-SLP performs positioning interaction with the target terminal to acquire the position of the target terminal, and the H-SLP reports the position of the target terminal to the positioning initiating client.

For periodic trigger positioning, if the target terminal position is calculated by the target terminal in the positioning interaction between the H-SLP and the target terminal, then the target terminal directly sends its own terminal position to the H-SLP through the SUPL REPORT message. SLP, the positioning interaction ends. For area-triggered positioning, if the position of the target terminal is calculated by the target terminal in the positioning interaction between the H-SLP and the target terminal, then the target terminal first judges whether its own position satisfies the area triggering condition, and if so, passes its own position through The SUPL report (SUPL REPORT) message is sent to the H-SLP, and the positioning interaction ends. After the H-SLP obtains the location of the target terminal, it sends the location of the target terminal to the positioning initiating client through the MLP TLREP message.

For periodic triggered positioning, if the target terminal position is calculated by the H-SLP in the positioning interaction between the H-SLP and the target terminal, then the H-SLP will end the positioning interaction after obtaining the target terminal position, and the H-SLP Send the location of the target terminal to the positioning initiating client directly through the MLP TLREP message. For area-triggered positioning, if the position of the target terminal is calculated by the H-SLP in the positioning interaction between the H-SLP and the target terminal, then the H-SLP first reports the position of the target terminal through the SUPL position report (SUPL POS REPORT) message Send to the target terminal, the target terminal judges whether its own position meets the area trigger condition, if so, sends its own position to H-SLP through SUPL report (SUPL REPORT) message, and the positioning interaction ends; after H-SLP obtains the target terminal position, then Send the location of the target terminal to the positioning initiating client through the MLP TLREP message. For the situation where the location is triggered by the area and the location of the target terminal is calculated by the H-SLP, as an alternative, the H-SLP can also directly judge whether the location of the target terminal satisfies the area trigger condition according to the area trigger condition, and if so, pass the MLP TLREP The message sends the location of the target terminal to the positioning initiating client.

If the next positioning interaction between the H-SLP and the target terminal does not start soon, both the H-SLP and the target terminal disconnect the current IP connection and release related resources after the current positioning interaction ends. Conversely, if the next positioning interaction between the H-SLP and the target terminal needs to start soon, the target terminal can include in the SUPL POS INIT message, or in any message after the SUPL POS INIT message and before the positioning interaction ends. The preset flag field is used to instruct the H-SLP to maintain the current IP connection; meanwhile, the target terminal itself also maintains the current IP connection.

Step 210, according to the trigger location condition proposed by the H-SLP in the SUPL TRIGGERED RESPONSE message, repeat steps 208 to 209 several times.

Step 211, after executing step 209 for the last time, the H-SLP disconnects the IP connection with the target terminal after sending a SUPLEND message to the target terminal, and releases resources related to this triggered positioning; the target terminal receives the SUPL END message Then disconnect the IP connection with the H-SLP, and release the resources related to this trigger location.

The H-SLP can also send an MLP TLREP message to the positioning initiating client to notify the positioning initiating client of the location of the target terminal.

In step 208 and/or step 209, the target terminal instructs the H-SLP to maintain the current IP connection by including a preset flag field in the interaction message with the H-SLP. As a first alternative, the target terminal may include a time parameter in the interaction message with the H-SLP, to instruct the H-SLP to decide whether to disconnect the current IP connection and release related resources according to the time parameter. The time parameter can be an absolute time value or a time length value. If the time parameter is an absolute time value, the parameter can be called the disconnection time. When the absolute time arrives, if the H-SLP does not receive the SUPL POSINIT message sent by the target terminal for initiating a new positioning interaction , then disconnect the current IP connection and release related resources; if the time parameter is the value of the time length, the parameter can be called the waiting time. H-SLP starts timing after the positioning interaction with the target terminal ends. If the SUPL POS INIT message used to initiate a new positioning interaction is not received from the H-SLP before this time period, the current IP connection is disconnected and related resources are released. The above time parameter can also be used to indicate whether the target terminal itself disconnects the current IP connection and releases related resources. As a second alternative, the H-SLP and the target terminal can agree on the waiting time in advance. If the target terminal contains the information for Instruct the H-SLP to keep the preset flag field of the current IP connection, then both the H-SLP and the target terminal will keep the current IP connection before the waiting time is reached. As a third alternative, the H-SLP and the target terminal can agree on the waiting time in advance. After the initialization phase ends or the positioning interaction ends, the H-SLP and the target terminal will maintain the current IP connection by default until the waiting time is reached. . In the third alternative solution, the target terminal does not need to judge whether the next positioning interaction will start soon.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1, a kind of portable terminal is carried out the method for triggered location, it is characterized in that when the positioning interaction between locating platform and target terminal began, this method further may further comprise the steps:

A, judge between locating platform and target terminal whether exist Internet protocol to be connected,, position alternately then, otherwise directly position mutual if do not have then set up earlier being connected between locating platform and target terminal;

Before positioning interaction between locating platform and target terminal finished, this method further may further comprise the steps:

If B determine in predefined time threshold values, to position between platform and the target terminal next positioning interaction or, determine the no show of predefined wait duration or, determine predefined disconnection no show constantly, then keep current connection the between locating platform and target terminal, otherwise, disconnect current connection the between locating platform and target terminal.

2, according to claim 1 portable terminal is carried out the method for triggered location, it is characterized in that this method further comprises:

Before the initial phase of triggered location finishes, if determine in predefined time threshold values, to position between platform and the target terminal the first time positioning interaction or, determine the no show of predefined wait duration or, determine predefined disconnection no show constantly, then keep current connection the between locating platform and target terminal, otherwise, disconnect current connection the between locating platform and target terminal.

3, according to claim 1 portable terminal is carried out the method for triggered location, it is characterized in that the described judgement of steps A is carried out by locating platform;

Steps A is described to be set up earlier being connected between locating platform and target terminal, positions then alternately to be:

Locating platform is prepared to position mutual by Short Message Service or WAP (wireless access protocol) notification target terminal, set up after target terminal has notice and being connected of locating platform, being connected that locating platform and target terminal pass through to be set up then positions alternately;

Described directly the positioning alternately of steps A is:

Locating platform connects the notification target terminal by described Internet protocol and prepares to position mutual, and locating platform is connected by described Internet protocol with target terminal and positions alternately then.

4, according to claim 1 portable terminal is carried out the method for triggered location, it is characterized in that the described judgement of steps A is carried out by target terminal;

Steps A is described sets up being connected between locating platform and target terminal:

Target terminal foundation is connected with locating platform.

5, according to claim 1 and 2 portable terminal is carried out the method for triggered location, it is characterized in that, preestablish time threshold, describedly determine that the next positioning interaction that positions between platform and the target terminal is in predefined time threshold values:

Judge whether can in the time threshold that begins from current time, carry out next positioning interaction, if, then be judged as current connection that needs to keep between locating platform and target terminal, do not need otherwise be judged as.

6, according to claim 1 and 2 portable terminal is carried out the method for triggered location, it is characterized in that, set and wait for duration, describedly determine that the no show of predefined wait duration is:

Pick up counting from current time, judge to wait for whether duration arrives, if no show then think needs to keep current connection the between locating platform and target terminal.

7, according to claim 1 and 2 portable terminal is carried out the method for triggered location, it is characterized in that, describedly determine that predefined disconnections moment no show is:

Be provided with and disconnect constantly, judge to disconnect constantly whether arrive, if no show then think needs to keep current connection the between locating platform and target terminal.

8, according to claim 6 portable terminal is carried out the method for triggered location, it is characterized in that described setting waits for that duration is:

Locating platform and the target terminal wait duration of making an appointment;

Or

Locating platform is determined to wait for duration when the initial phase of triggered location finishes, and will be waited for duration notification target terminal;

Or

Locating platform is determined to wait for duration when positioning interaction finishes, and will be waited for that duration is notified to target terminal;

Or

Target terminal is determined to wait for duration when positioning interaction finishes, and will be waited for that duration is notified to locating platform.

9, each describedly carries out the method for triggered location to portable terminal according to claim 1 to 3, it is characterized in that described maintenance or disconnect current being connected between locating platform and target terminal:

Locating platform notification target terminal keeps or disconnects current connection, and locating platform self also keeps or disconnects current connection simultaneously.

10, described portable terminal is carried out the method for triggered location according to claim 1,2 or 4, it is characterized in that, described maintenance or disconnect current being connected between locating platform and target terminal:

Target terminal notice locating platform keeps or disconnects current connection, and target terminal self also keeps or disconnects current connection simultaneously.

11, according to claim 1 portable terminal is carried out the method for triggered location, it is characterized in that, in step B, when disconnecting current connection the between locating platform and target terminal, this method further comprises:

Locating platform discharges the resource relevant with this triggered location separately with target terminal.

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