CN102006549A - Method and device for locating by using AGPS (Assisted Global Positioning System) - Google Patents

Abstract

The invention discloses a method and device for positioning using AGPS. The method includes the following steps: sending an AGPS start control signal to a mobile terminal through a mobile communication network; generating AGPS auxiliary positioning information according to the AGPS positioning request signal returned by the mobile terminal; Sending the AGPS assisted positioning information to the mobile terminal; determining the position of the mobile terminal according to the positioning information returned by the mobile terminal. The method and device provided by the present invention actively trigger the AGPS function through the network side equipment to complete the positioning of the mobile terminal, so that when the mobile terminal holder encounters an emergency, the AGPS function can be activated by the network side, so that the mobile terminal holds can be rescued quickly.

Description

A method and device for positioning using AGPS

technical field

The invention relates to the field of communication technology, in particular to a method and device for positioning by using AGPS.

Background technique

At present, the method of using the Global Positioning System (Global Positioning System, GPS) satellite group to obtain the position of a certain terminal has been widely used. The GPS navigation satellite system has 27 navigation satellites, of which 24 are in use and 3 are spare, which can be used anywhere Provide satellite navigation and positioning services for the world at all times. However, in a more complex environment, the GPS signal received from the GPS satellite is weak. In order to achieve accurate positioning and improve the sensitivity of the GPS functional module, an improved positioning method, namely Assisted Global Positioning System (Assisted Global Positioning System) has been proposed. Positioning System, AGPS), in this method, the GPS positioning server provides auxiliary information, such as time Doppler frequency offset, broadcast ephemeris, almanac, etc., combined with GPS information and auxiliary information for positioning, thereby improving positioning accuracy and shortening the time of the first fix. At present, many mobile terminals have AGPS function. However, due to battery capacity and standby time considerations, the AGPS function is usually turned off. Only when the positioning service is required, the mobile terminal holder manually triggers the function to enable it. .

It can be seen from this that the AGPS function of the mobile terminal in the prior art can only be opened by the holder manually triggering it. The holder is in a coma or has limited mobility and cannot manually turn on the AGPS function. Therefore, it will be difficult for rescuers or relatives to determine the location of the mobile terminal holder through the AGPS positioning function, thereby delaying the rescue time and causing irreversible consequences.

Contents of the invention

The present invention provides a method and device for positioning using AGPS to solve the problem in the prior art that the AGPS function cannot be manually activated when the mobile terminal holder encounters an emergency and causes inconvenience.

A method for positioning using AGPS, comprising:

Sending an AGPS start control signal to the mobile terminal through the mobile communication network;

Generate AGPS assisted positioning information and send the AGPS assisted positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal;

The location of the mobile terminal is determined according to the positioning information returned by the mobile terminal.

A method for positioning using AGPS, comprising the following steps:

Receive the AGPS start control signal sent by the GPS positioning server through the mobile communication network;

When it is determined to enable the AGPS function, return the AGPS positioning request signal to the GPS positioning server, and receive the AGPS auxiliary positioning information returned by the GPS positioning server;

Generate positioning information according to the AGPS auxiliary positioning information, and send the positioning information to a GPS positioning server.

A device for positioning using AGPS, comprising:

A control unit, configured to send an AGPS activation control signal to the mobile terminal through the mobile communication network;

The auxiliary positioning unit is used to generate AGPS auxiliary positioning information and send the AGPS auxiliary positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal;

A positioning unit, configured to determine the location of the mobile terminal according to the positioning information returned by the mobile terminal.

A device for positioning using AGPS, comprising:

The receiving unit is used to receive the AGPS start control signal sent by the GPS positioning server through the mobile communication network;

The GPS control unit is used to return the AGPS positioning request signal to the GPS positioning server when the AGPS function is determined to be turned on, and receive the AGPS auxiliary positioning information returned by the GPS positioning server;

A GPS positioning unit, configured to generate positioning information according to the AGPS auxiliary positioning information, and send the positioning information to a GPS positioning server.

The method and device for positioning using AGPS in the embodiment of the present invention, the AGPS function is actively triggered by the network side equipment to complete the positioning of the mobile terminal, so that the AGPS function can be activated by the network side when the mobile terminal holder encounters an emergency , so that the mobile terminal holder can quickly get rescue.

Description of drawings

Fig. 1 is a flow chart of a method for positioning using AGPS in one embodiment of the present invention;

2 is a flowchart of a method for positioning using AGPS in another embodiment of the present invention;

FIG. 3 is a structural diagram of a device for positioning using AGPS in one embodiment of the present invention;

Fig. 4 is a structural diagram of a positioning device using AGPS in another embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a method and device for positioning using AGPS. The AGPS function is actively triggered by the network side equipment to complete the positioning of the mobile terminal, so that when the mobile terminal holder encounters an emergency, the network side Turn on the AGPS function, so that the mobile terminal holder can get rescue quickly.

The embodiment of the present invention provides a method for positioning using AGPS, as shown in Figure 1, comprising the following steps:

S101: Send an AGPS activation control signal to the mobile terminal through the mobile communication network;

S102: Generate AGPS assisted positioning information and send the AGPS assisted positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal;

S103: Determine the location of the mobile terminal according to the positioning information returned by the mobile terminal.

Preferably, the step of generating AGPS assisted positioning information specifically includes: determining the geographical area of the mobile terminal according to the AGPS positioning request signal, and generating corresponding AGPS assisted positioning information according to the geographical area.

Preferably, according to the positioning information returned by the mobile terminal after receiving the AGPS assisted positioning information, the step of determining the position of the mobile terminal specifically includes: the positioning information returned by the mobile terminal is the position of the mobile terminal data, directly obtaining the location of the mobile terminal according to the positioning information; or, the positioning information returned by the mobile terminal is GPS data, and calculating the location of the mobile terminal according to the GPS data.

The embodiment of the present invention also provides a method for positioning using AGPS, as shown in Figure 2, including the following steps:

S201: Receive the AGPS activation control signal sent by the GPS positioning server through the mobile communication network;

S202: When it is determined to enable the AGPS function, return the AGPS positioning request signal to the GPS positioning server, and receive the AGPS auxiliary positioning information returned by the GPS positioning server;

S203: Generate positioning information according to the AGPS assisted positioning information, and send the positioning information to a GPS positioning server.

Preferably, the step of determining to enable the AGPS function specifically includes: after receiving the AGPS activation control signal, prompting the user that the AGPS function is about to be activated, and determining to enable the AGPS function if an instruction for confirming activation is received from the user; or, receiving the AGPS After the control signal is turned on, the user is prompted that the AGPS function is about to be turned on, and if the user does not receive an instruction to refuse to turn on the function within a preset time, it is determined to turn on the AGPS function. In this way, when the user is inconvenient to move, the GPS positioning server can automatically open the AGPS function to complete the positioning of the user terminal, and the user can also choose to refuse to open it, thereby avoiding unnecessary inconvenience to users who do not need this function. position.

Preferably, the positioning information is GPS data, and the step of generating positioning information according to the AGPS assisted positioning information specifically includes: using the AGPS assisted positioning information to receive GPS data through GPS satellites; or, the positioning information is position data, the step of generating positioning information according to the AGPS assisted positioning information specifically includes: using the AGPS assisted positioning information, receiving GPS data through GPS satellites, and calculating the position data of the mobile terminal according to the GPS data.

By adopting the method for positioning using AGPS provided by the embodiment of the present invention, the AGPS function can be actively triggered by the network side equipment to complete the positioning of the mobile terminal, so that when the mobile terminal holder encounters an emergency, the network side can start AGPS function, so that mobile terminal holders can quickly get rescue.

The method for positioning using AGPS provided by the present invention will be described in detail below with a preferred embodiment. The method is applied in a mobile communication system, and the system includes: a mobile terminal, a GPS satellite, a mobile communication network and a GPS positioning server. Among them, the GPS positioning server is used to receive GPS signals from GPS satellites and generate GPS auxiliary information; the mobile terminal is used to receive GPS signals from GPS satellites according to GPS auxiliary positioning information, and thereby calculate the position of the mobile terminal; the mobile communication network uses To complete the communication between the mobile terminal and the GPS positioning server.

When using the method provided by the embodiment of the present invention to perform AGPS positioning, the following steps are included:

Step 1: If before implementing this embodiment, it is found that the mobile terminal that needs to be positioned is located in the earthquake-stricken area, and the communication network in the earthquake area has been damaged, then first an emergency mobile communication network needs to be established. If the mobile communication network serves, this step may not be executed, and the execution may be performed directly from step two. Wherein, the emergency mobile communication network includes: a base station, a radio network controller and a mobile switching center. The base station includes two parts: wireless signal receiving and transmitting, which are mainly used to complete the signal transmitting and receiving of mobile terminals; the wireless network controller is the control part of wireless resources, which is used to manage wireless communication; the mobile switching center is mainly used to provide call control , mobility management, authentication and encryption functions. If the GPS positioning server has also been damaged, the GPS positioning server also needs to be repaired.

Step 2: the GPS positioning server sends an AGPS start control signal to the mobile terminal in the network coverage area through the mobile communication network, and the AGPS start control signal is forwarded by the mobile switching center, the wireless network controller and the base station in the mobile communication network, It is sent to the mobile terminal in the form of wireless signal.

Step 3: The mobile terminal receives the AGPS activation control signal, and activates the AGPS function according to the AGPS activation control signal. During specific implementation, it can be determined whether the mobile terminal is to enable the AGPS function according to actual needs. For example, if it is used in the process of rescue in a disaster area, the mobile terminal can display "AGPS function is about to be activated" to the user after receiving the AGPS activation control signal. The user can choose "OK" or "Cancel", if the user chooses "OK", or if there is no response within the preset time, for example, within five minutes, the mobile terminal will send the GPS positioning server Return the AGPS positioning request signal, so that when the user is inconvenient to move, the network side can turn on the AGPS function after waiting for the preset time to locate the victims, and the user can also choose "Cancel" to reject the request within the preset time If it is used in the process of tracking criminals, the AGPS function can be turned on directly after the mobile terminal receives the AGPS function, and the AGPS positioning request signal will be returned to the GPS positioning server to quickly locate the criminal.

Step 4: After receiving the AGPS positioning request signal sent by the mobile terminal, the GPS positioning server generates corresponding GPS assisted positioning information, and sends the GPS assisted positioning information to the mobile terminal. Wherein, after the GPS positioning server receives the AGPS positioning request signal, it needs to judge the approximate geographical area where the mobile terminal sending the AGPS positioning request signal is located, and according to the geographical area, combined with the GPS positioning server received from the GPS satellite signal to generate GPS-assisted positioning information corresponding to the mobile terminal. The specific execution method is well known to those skilled in the art and will not be repeated here.

Step 5: After receiving the GPS assisted positioning information, the mobile terminal uses the GPS assisted positioning information to receive GPS signals from GPS satellites, and generate GPS data according to the received GPS signals.

Step 6: The mobile terminal calculates the location data according to the GPS data, obtains the location of the mobile terminal, and sends the location data to the GPS positioning server, so as to facilitate the positioning of rescuers. In this step, in order to simplify the mobile terminal, the function of calculating position data can also be performed by the GPS positioning server. At this time, the mobile terminal sends the GPS data generated in step S105 to the GPS positioning server, and the GPS positioning server according to The GPS data calculates the location data to obtain the location of the mobile terminal. After obtaining the location data, the location data can be sent to the mobile terminal or not, depending on the situation.

By adopting the method for positioning using AGPS provided by the embodiment of the present invention, the AGPS function can be actively triggered by the network side equipment to complete the positioning of the mobile terminal, so that when the mobile terminal holder encounters an emergency, the network side can start AGPS function, so that mobile terminal holders can quickly get rescue.

The embodiment of the present invention also provides a positioning device using AGPS, as shown in Figure 3, including:

A control unit 31, configured to send an AGPS start control signal to the mobile terminal through the mobile communication network;

The auxiliary positioning unit 32 is used to generate AGPS auxiliary positioning information and send the AGPS auxiliary positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal;

The positioning unit 33 is configured to determine the position of the mobile terminal according to the positioning information returned by the mobile terminal.

Preferably, the auxiliary positioning unit 32 is specifically configured to determine the geographical area of the mobile terminal according to the AGPS positioning request signal, and generate corresponding AGPS auxiliary positioning information according to the geographical area.

Preferably, the positioning unit 33 is specifically configured to: when the positioning information returned by the mobile terminal is the position data of the mobile terminal, obtain the position of the mobile terminal directly according to the positioning information; or, when the positioning information returned by the mobile terminal is the position data of the mobile terminal; When the positioning information returned by the mobile terminal is GPS data, the position of the mobile terminal is calculated according to the GPS data.

The embodiment of the present invention also provides a positioning device using AGPS, as shown in Figure 4, including:

The receiving unit 41 is used to receive the AGPS start control signal sent by the GPS positioning server through the mobile communication network;

The GPS control unit 42 is used to return the AGPS positioning request signal to the GPS positioning server when determining to open the AGPS function, and receive the AGPS auxiliary positioning information returned by the GPS positioning server;

The GPS positioning unit 43 is configured to generate positioning information according to the AGPS auxiliary positioning information, and send the positioning information to a GPS positioning server.

Preferably, the GPS control unit 42 is specifically used to: after receiving the AGPS activation control signal, prompt the user that the AGPS function is about to be activated, and determine to enable the AGPS function if an instruction to confirm activation is received from the user; or, receive After the AGPS activation control signal is received, the user is prompted that the AGPS function is about to be activated, and if no instruction of refusal to activate the activation is received from the user within the preset time, the AGPS function is determined to be activated.

Preferably, the GPS positioning unit 43 is specifically configured to: use the AGPS auxiliary positioning information to receive GPS data through GPS satellites; or use the AGPS auxiliary positioning information to receive GPS data through GPS satellites, according to the The GPS data calculates the location data of the mobile terminal.

By using the device for positioning using AGPS provided by the embodiment of the present invention, the AGPS function can be actively triggered by the network side equipment to complete the positioning of the mobile terminal, so that when the mobile terminal holder encounters an emergency, the network side can open AGPS function, so that mobile terminal holders can quickly get rescue.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (12)

1. A method utilizing Assisted Global Positioning System AGPS to locate, is characterized in that, comprising: Sending an AGPS start control signal to the mobile terminal through the mobile communication network; Generate AGPS assisted positioning information and send the AGPS assisted positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal; The location of the mobile terminal is determined according to the positioning information returned by the mobile terminal. 2. The method according to claim 1, wherein the step of generating AGPS assisted positioning information specifically comprises: Determine the geographical area of the mobile terminal according to the AGPS positioning request signal, and generate corresponding AGPS auxiliary positioning information according to the geographical area. 3. The method according to claim 1 or 2, wherein, according to the positioning information returned by the mobile terminal, the step of determining the position of the mobile terminal specifically comprises: When the location information returned by the mobile terminal is the location data of the mobile terminal, directly obtain the location of the mobile terminal according to the location information; or, When the positioning information returned by the mobile terminal is Global Positioning System (GPS) data, the position of the mobile terminal is calculated according to the GPS data. 4. A method for positioning using the Assisted Global Positioning System AGPS, characterized in that it comprises: Receive the AGPS opening control signal sent by the GPS positioning server of the Global Positioning System through the mobile communication network; When it is determined to enable the AGPS function, return the AGPS positioning request signal to the GPS positioning server, and receive the AGPS auxiliary positioning information returned by the GPS positioning server; Generate positioning information according to the AGPS auxiliary positioning information, and send the positioning information to a GPS positioning server. 5. The method according to claim 4, wherein the step of determining to enable the AGPS function specifically comprises: After receiving the AGPS activation control signal, prompting the user that the AGPS function is about to be activated, and if receiving an instruction to confirm activation from the user, confirm that the AGPS function is activated; or, After receiving the AGPS activation control signal, the user is prompted that the AGPS function is about to be activated, and if no instruction to refuse activation from the user is received within the preset time, the AGPS function is determined to be activated. 6. The method according to claim 4 or 5, wherein the positioning information is GPS data, and the step of generating positioning information according to the AGPS assisted positioning information specifically comprises: Using the AGPS assisted positioning information to receive GPS data through GPS satellites; or, The positioning information is position data, and the step of generating the positioning information according to the AGPS assisted positioning information specifically includes: The AGPS assisted positioning information is used to receive GPS data through GPS satellites, and the location data of the mobile terminal is calculated according to the GPS data. 7. A device for positioning using the Assisted Global Positioning System AGPS, characterized in that it comprises: A control unit, configured to send an AGPS activation control signal to the mobile terminal through the mobile communication network; An auxiliary positioning unit, configured to generate AGPS auxiliary positioning information and send the AGPS auxiliary positioning information to the mobile terminal according to the AGPS positioning request signal returned by the mobile terminal; A positioning unit, configured to determine the location of the mobile terminal according to the positioning information returned by the mobile terminal. 8. The device according to claim 7, wherein the auxiliary positioning unit is specifically configured to determine the geographical area of the mobile terminal according to the AGPS positioning request signal, and generate corresponding AGPS assistance according to the geographical area. positioning information. 9. The device according to claim 7, wherein the positioning unit is specifically used for: When the location information returned by the mobile terminal is the location data of the mobile terminal, directly obtain the location of the mobile terminal according to the location information; or, When the positioning information returned by the mobile terminal is Global Positioning System (GPS) data, the position of the mobile terminal is calculated according to the GPS data. 10. A device for positioning using the Assisted Global Positioning System (AGPS), characterized in that it comprises: The receiving unit is used to receive the AGPS opening control signal sent by the GPS positioning server of the global positioning system through the mobile communication network; The GPS control unit is used to return the AGPS positioning request signal to the GPS positioning server when the AGPS function is determined to be turned on, and receive the AGPS auxiliary positioning information returned by the GPS positioning server; A GPS positioning unit, configured to generate positioning information according to the AGPS auxiliary positioning information, and send the positioning information to a GPS positioning server. 11. The device according to claim 10, wherein the GPS control unit is specifically used for: After receiving the AGPS activation control signal, prompting the user that the AGPS function is about to be activated, and if receiving an instruction to confirm activation from the user, confirm that the AGPS function is activated; or, After receiving the AGPS activation control signal, the user is prompted that the AGPS function is about to be activated, and if no instruction to refuse activation from the user is received within the preset time, the AGPS function is determined to be activated. 12. The device according to claim 10, wherein the GPS positioning unit is specifically used for: Using the AGPS assisted positioning information to receive GPS data through GPS satellites; or, The AGPS assisted positioning information is used to receive GPS data through GPS satellites, and the location data of the mobile terminal is calculated according to the GPS data.

Images