WO2012055293A1

WO2012055293A1 - Method and system for gps positioning

Info

Publication number: WO2012055293A1
Application number: PCT/CN2011/079000
Authority: WO
Inventors: 黄玉维; 李晨熙
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-10-26
Filing date: 2011-08-26
Publication date: 2012-05-03
Also published as: CN102036371A

Abstract

Disclosed are a method and a system for positioning with the global positioning system, wherein it is possible to obtain the current network state so as to determine whether the current network is available; if the current network is unavailable, then the positioning is carried out by applying an independent mode; and if the current network is available, then the positioning is carried out by applying a mobile-phone-assisted mode and is further carried out through a combination of the current network state and the mobile phone mode. The method and system of the present invention ensure that the terminal can achieve its positioning function accurately and quickly in most situations, improving its positioning performance as well as user satisfaction.

Description

GPS positioning method and system

The present invention relates to the field of communications, and in particular, to a GPS (Global Positioning System) positioning method and system. Background technique

Mobile positioning is a new feature provided by mobile communication networks. The wireless location technology is used to obtain the location information of the terminal, and is provided to the user, the mobile communication network or other external entities to implement various location-related applications. It integrates GPS, CDMA1X (Code Division Multiple Access Packet Data Exchange Network), GIS (Geographic Information System), INTERNET network and technology.

As location services become more and more important, there are more and more applications based on this service. At present, wireless network assisted GPS positioning and CDMA triangulation positioning functions can be embedded in the CDMA terminal chip to organically combine the above two positioning technologies to form a GPSOne hybrid positioning technology.

GPSOne has three positioning methods:

(1) Mobile phone assist mode (MS-ASSITED)

The positioning of the terminal is performed by the positioning server, and the terminal only plays an auxiliary role. The specific operation principle is as follows: The terminal can calculate its approximate location in a certain area by comparing the time difference between sending signals to each base station. The information is then sent to the location server; the location server obtains the satellite's operational information, and then locates the nearest 4-5 satellites from the terminal based on the approximate location of the terminal, and then sends the location information of the satellites to the handset. The terminal obtains the location information through the satellite, and the time delay information is re-sent to the location server; the location server accurately calculates the actual location of the terminal, and then sends the final result to the terminal.

(2) mobile phone mode (MS-BASED) The first positioning of the terminal is performed by the positioning server, and the subsequent positioning is performed by the terminal. The process of the first positioning is similar to MS-ASSITED. Later, the terminal downloads the operational information of all the satellites from the positioning server as needed, and finds the 4-5 satellites closest to itself, and then obtains the GPS signals from these satellites, and performs the positioning calculation by itself.

(3) Independent mode (STANDALONE)

The traditional GPS positioning method is applied, and the positioning server is not interacted with; the terminal itself interacts with all the satellites to finally obtain the location information.

According to the characteristics of the above three modes, it can be seen that each of these modes has its own advantages and disadvantages, and is suitable for use in different scenarios. Among them, the mobile phone assisted mode can directly obtain the terminal location information through the network, and does not need the mobile phone itself to perform the positioning operation, but this mode requires network support, in the case that the network environment is poor or even no network, and the network resources are occupied. In this case, this mode cannot be successfully located; while the independent mode is completely positioned by the behavior of the terminal itself, and no network support is needed at all. In this mode, in the environment where the terminal cannot be effectively connected with the satellite (such as indoors), Positioning is also unsuccessful, and the initial positioning delay is also relatively large, and the success rate is low. The mobile phone mode requires both network support and the open environment where the terminal can be effectively connected to the satellite, and the possibility of positioning failure is greater. Used as a complement to the two positioning modes described above.

Since both the mobile phone mode and the independent mode require the terminal to connect to the satellite according to the satellite information, the satellite information stored in the terminal in the two modes can be shared; and in the mobile assistant mode, the terminal can also acquire the satellite information and save it to the terminal, but Since this mode does not directly connect satellites to acquire location information, satellite information in this mode cannot be used in other modes.

At present, there is no one in the mobile communication terminal on the market that can ensure that the terminal can accurately and quickly realize the positioning function in real time at any time, which is disadvantageous to the positioning performance and the improvement of user satisfaction. Summary of the invention

In view of this, the main object of the present invention is to provide a GPS positioning method and system, which ensure that the terminal can accurately and quickly implement the positioning function in most scenarios, improve positioning performance and user satisfaction.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A GPS positioning method includes:

Get the current network status to determine if the current network is available;

When the current network is unavailable, the independent mode is applied; when the current network is available, the mobile phone assisted mode is used for positioning, and the mobile phone mode is also used according to the current network state.

The process of combining mobile phone mode positioning includes:

Check whether the network status is available. If the detection result is available, determine whether the preset refresh period is 0. If it is not 0, apply the mobile mode to locate.

After the application independent mode fails to be located, it is further determined whether the current network is available. After the application mobile phone auxiliary mode fails to be located, it is further determined whether the current network is available. The method further includes: before the obtaining the current network status to determine whether the current network is available, the method further includes:

Set the number of refresh cycles when the terminal is powered on; and,

Reset the number of refresh cycles when a location request is received.

After the application mobile phone assisted mode is successfully located, a short timer is also set when the current network is unavailable, and the current network is re-determined when the short timer expires;

After the mobile phone assisted mode is used for positioning, a long timer is also set, and the current network is re-determined when the long timer expires.

A GPS positioning system, comprising a network state decision unit and an independent mode positioning unit connected thereto, a mobile phone assist mode positioning unit, and a mobile phone mode positioning unit; wherein the network state decision unit is configured to obtain a current network state to determine a current network Available, and according to Judging result, when the current network is unavailable, the independent mode positioning unit is controlled to perform independent mode positioning; when the current network is available, the mobile phone auxiliary mode positioning unit is controlled to perform mobile phone assist mode positioning, and the mobile phone mode positioning unit is combined with the mobile phone mode according to the current network state. Positioning

The independent mode positioning unit, the mobile phone assist mode positioning unit, and the mobile phone mode positioning unit are configured to perform corresponding positioning operations according to the control of the network state decision unit.

The network state decision unit controls the mobile phone mode positioning unit to be combined with the mobile phone mode positioning, and is configured to:

It is detected whether the network status is available. When the detection result is available, it is determined whether the preset refresh period is 0. If not, the mobile phone mode positioning unit is controlled to apply the mobile mode positioning.

After the application independent mode fails to be located, the network state decision unit is further configured to re-determine whether the current network is available;

After the application mobile phone assisted mode positioning fails, the network state decision unit is further configured to re-determine whether the current network is available.

The network state decision unit is further configured to: set a number of refresh cycles when the terminal is powered on; and reset the number of refresh cycles when the location request is received, before the current network state is obtained to determine whether the current network is available.

After the mobile phone assisted mode is successfully located, when the current network is unavailable, the network state decision unit is further configured to: set a short timer, and re-determine whether the current network is available when the short timer expires;

After the mobile phone assisted mode is used for positioning, the network state determining unit is further configured to: set a long timer, and re-determine whether the current network is available when the long timer expires.

The GPS positioning method and system of the invention ensure that the terminal can accurately and quickly realize the positioning function in most scenarios, and improve the positioning performance and user satisfaction. DRAWINGS

FIG. 1 is a flowchart of GPS positioning according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a GPS positioning process of the present invention;

3 is a diagram of a GPS positioning system according to an embodiment of the present invention. detailed description

Generally, when the current network is unavailable, independent mode positioning can be applied. When the current network is available, the mobile phone assisted mode positioning can be applied, and the mobile phone mode positioning is further combined according to the current network state, thereby effectively obtaining the star map to improve the subsequent positioning speed.

The above operation ideas include the following steps:

Step A. After the power is turned on, wait for the positioning start command. After receiving the instruction, initialize a number of refresh cycles, and run step B;

It should be noted that since the star map has an expiration date, it is necessary to set the number of cycles for refreshing for the star map.

Step B. Check if the network status is available, if available, go to step C; otherwise, go to step D;

Step C. Use the mobile phone assist mode to locate once. If the data is successfully obtained, go to step E; otherwise, go to step B;

Step D. Use the independent mode to locate once. If the data is successfully obtained, record the relevant satellite information; otherwise, perform step B;

Step E. Check if the network status is available. If it is available, go to step F; otherwise set a short timer (such as 1 minute), and re-execute step E when the timer expires;

Step F. Determine the number of refresh cycles. If not, execute step G. If the number of refresh cycles is 0, do nothing.

Step G. Use the mobile phone mode to locate once. After the positioning returns, the number of refresh cycles is reduced by one, and a long time timer (such as 60 minutes) is set. When the timer expires, step E is re-executed.

It can be seen that compared with the prior art, the present invention is directed to the advantages and disadvantages of various positioning methods, determining the current network state of the terminal before each positioning, and selecting a corresponding positioning mode. Failure in positioning At the same time, there is fault-tolerant processing to continue positioning, which largely guarantees the success rate of positioning. For the problem of slow initial positioning of the independent mode, an operation is specially set up: using the mobile phone assist mode (when the network is available) or the stand-alone mode (when the network is unavailable) periodically performs a positioning operation to save the currently valid satellite information in In the terminal. In this way, when a positioning request is received, if it is necessary to use the independent mode to locate, because the previously saved satellite information is saved, the terminal can quickly realize the effective positioning operation.

At the same time, a cycle number is set for the above period. If the terminal does not receive the location request for a long time, it indicates that the user of the terminal does not have a positioning requirement. This periodic operation is automatically terminated after a period of execution. When there is a positioning request as a trigger, the periodic operation is restarted.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a flowchart of GPS positioning according to an embodiment of the present invention, where the process includes the following steps:

Step 101a. After the booting is completed, the number of refresh cycles is initialized, and step 102 is performed;

Step 101b. The terminal receives the positioning request, re-initializes the number of refresh cycles, and performs steps.

102;

Step 102. Check if the network status is available, if available, go to step 104, otherwise go to step 103;

Step 103. Use the independent mode to locate once, if the data is successfully obtained, record the relevant satellite information, and the process ends; otherwise, return to step 102;

Step 104. Use the mobile phone assist mode to locate once, if the data is successfully obtained, go to step 105; otherwise, return to step 102;

Step 105. Check if the network status is available, if available, go to step 107; otherwise, go to step 106;

Step 106. Set a short timer (such as 1 minute), and the short timer returns to step 105 when it is timed; Step 107. Determine whether the number of refresh cycles is 0. If not, execute step 108. If the number of refresh cycles is 0, no operation is performed, and the process ends.

Step 108. Locating once in the mobile phone mode, the number of refresh cycles after the positioning is returned is decreased by 1, and step 109 is performed;

Step 109. Set a long time timer (such as 60 minutes), and return to the step when the long timer expires.

105.

As can be seen from the above flow, the GPS positioning technology of the present invention has an operation road as shown in FIG. Referring to FIG. 2, FIG. 2 is a schematic diagram of a GPS positioning process according to the present invention. The process includes the following steps: Step 210: When the current network is unavailable, the independent mode positioning is applied.

Step 220: When the current network is available, the mobile phone assisted mode is used for positioning, and the mobile phone mode is further configured according to the current network state.

In order to ensure that the operation of the above process can be smoothly implemented, the settings shown in Figure 3 can be performed. Referring to FIG. 3, FIG. 3 is a diagram of a GPS positioning system according to an embodiment of the present invention. The system includes a network state decision unit, an independent mode positioning unit that can be connected thereto, a mobile phone assist mode positioning unit, and a mobile phone mode positioning unit. Set in the terminal.

In actual application, the network state decision unit can obtain the current network state to determine whether the current network is available, and according to the judgment result, control the independent mode positioning unit to perform independent mode positioning when the current network is unavailable; control the mobile phone when the current network is available. The auxiliary mode positioning unit performs mobile phone assist mode positioning, and further controls the mobile phone mode positioning unit to combine the mobile phone mode positioning according to the current network state.

In addition, in a specific application, the network state decision unit controls whether the mobile phone mode positioning unit is used to detect whether the network status is available, and whether the preset refresh cycle number is 0 when the detection result is available. If not 0, controlling the mobile phone mode positioning unit to apply the mobile phone mode positioning.

After the application independent mode fails to be located, the network state decision unit is further used for Re-determine whether the current network is available;

The network status decision unit is further used to: before obtaining the current network status to determine if the current network is available:

Set the number of refresh cycles when the terminal is powered on; and,

Reset the number of refresh cycles when a location request is received.

After the application mobile phone assisted mode is successfully located, when the current network is unavailable, the network state determining unit is further configured to: set a short timer, and re-determine whether the current network is available when the short timer expires;

In summary, the GPS positioning technology of the present invention ensures that the terminal can accurately and quickly achieve the positioning function in most scenarios, improving the positioning performance and user satisfaction.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention. Industrial applicability

The present invention discloses a global positioning system positioning method and system, which can obtain the current network status to determine whether the current network is available, and apply independent mode positioning when the current network is unavailable; when the current network is available, apply the mobile phone assisted mode positioning, and further According to the current network status, combined with the phone mode positioning. The method and system of the invention ensure that the terminal can accurately and quickly realize the positioning function in most scenarios, and improve the positioning performance and user satisfaction.

Claims

Claim

1. A global positioning system GPS positioning method, comprising:

2. The method according to claim 1, wherein the process of combining mobile phone mode positioning comprises:

3. The method according to claim 2, wherein

After the application independent mode fails to be located, it is further determined whether the current network is available. After the application mobile phone assist mode is failed, the current network is re-determined.

The method according to any one of claims 1 to 3, wherein before the obtaining the current network status to determine whether the current network is available, the method further includes:

Set the number of refresh cycles when the terminal is powered on; and,

Reset the number of refresh cycles when a location request is received.

5. The method according to claim 4, wherein

A GPS positioning system, comprising: a network state decision unit and an independent mode positioning unit connected thereto, a mobile phone assist mode positioning unit, and a mobile phone mode positioning unit; wherein the network state decision unit is configured to obtain a current network state to determine Whether the current network is available, and according to the judgment result, when the current network is unavailable, the independent mode positioning unit is controlled to perform the independent mode. Positioning; controlling the mobile phone assist mode positioning unit to perform mobile phone assist mode positioning when the current network is available, and controlling the mobile phone mode positioning unit to combine the mobile phone mode positioning according to the current network state; the independent mode positioning unit, the mobile phone assist mode positioning unit, and the mobile phone mode And a positioning unit, configured to perform a corresponding positioning operation according to the control of the network state decision unit.

7. The system according to claim 6, wherein the network state decision unit controls the mobile phone mode positioning unit when combined with the mobile phone mode positioning, and is configured to:

8. The system according to claim 7, wherein

The system according to any one of claims 6 to 8, wherein the network state decision unit is further configured to: before acquiring the current network state to determine whether the current network is available, the network state decision unit is further configured to:

Set the number of refresh cycles when the terminal is powered on; and,

Reset the number of refresh cycles when a location request is received.

10. The system according to claim 9, wherein

After the application mobile phone assisted mode is successfully located, when the current network is unavailable, the network state decision unit is further configured to: set a short timer, and re-determine whether the current network is available when the short timer expires;