CN100388833C - System and method for realizing location service by short message in wireless local telephone - Google Patents

Abstract

A system and method for wireless local telephones to realize location services by means of short messages. The system includes interconnected location service gateways, positioning servers and application servers; the location service gateways are connected to existing wireless local telephone networks. The positioning server and the location service gateway jointly complete the function of user positioning; the application server realizes functions such as control from application request to application result return, and content provision. An application server can have a map server. The method includes: the user initiates a location service request through a short message; the location service system completes user positioning; and the system sends the service result to the user through a short message. The invention is easy to use, does not require high real-time performance of the system, is simple to upgrade the system, and has good expansibility. The real-time requirements are relatively low, which reduces the requirements for system positioning time.

Description

System and method for realizing location service by short message in wireless local telephone

technical field

The invention relates to the location service in the wireless local telephone (PHS) system, especially the system and method for realizing the location service by short message.

Background technique

GSM (General System for Mobile Communications) has been widely used all over the world. The base station of the cellular network in the GSM system generally has a large and expensive structure, with a height of tens of meters and a service area radius of tens of kilometers; traditional cellular The voice quality of network communication is generally very low (8 kbit/s to 13 kbit/s); traditional cellular network communication is also limited by the amount of traffic that can be carried. When the number of users increases, the system becomes very crowded. A new wireless communication standard has developed rapidly in recent years, that is, the microcellular standard for wireless communication in the frequency band around 1990MHz, including: PACS (Personal Access Communication System) in the United States, DETECT (Digital Enhanced Cordless Communication System) in Europe , Japan's PHS (personal handheld system) and so on.

Japan's personal handheld system (PHS) is relatively mature, and has been widely used in Japan and China. Compared with the GSM system, PHS has the following advantages: the base station is small and cheap, it is very convenient to install, and the transmission power is small; its narrowband transmission format forms more frequency points in the 10MHz subband, and the user capacity is relatively large; the voice quality (32 kbit /sec) is better, and the bandwidth of various data services is higher (64 kbit/sec).

PHS is also called Wireless Local Phone or Little Smart in China. The PHS wireless local telephone system has been developed in China since 1999, and the initial construction of the network has been basically completed. The current market competition is mainly focused on increasing the number of existing network users and the ARPU (Average Revenue Per User, average revenue per user) value of users. An important means to attract users is to provide users with more and better services and applications. More and better applications can improve network quality, network competitiveness and user ARPU value. Now, various new services of wireless local telephones have been rapidly excavated, such as: mobile Internet access, data services, short message services and various intelligent services. Especially the short message service, with the provision of network services and the launch of mobile phones supporting short messages, the short message service volume of wireless local phones is on a straight-line upward trend in a short period of time.

At present, various equipment manufacturers are planning to launch a new service - location service. Compared with other wireless networks, PHS has a small location area and densely distributed base stations, which has higher positioning accuracy and advantages, and is conducive to the development of location services. PHS location service has rich personal and industrial applications, and has huge market potential.

The location service is a new type of service for the PHS network, and various manufacturers are still doing research on the realization method of the location service. No established system and standard interface emerged.

Contents of the invention

The technical problem to be solved by the present invention is to provide a system for realizing location service by short message and a method for realizing location service in the system, which can conveniently and flexibly realize various location services.

The system for providing location services for wireless local telephone users in the present invention includes interconnected location service gateways, positioning servers and application servers; the location service gateway is connected to the existing wireless local telephone network through No. 7 signaling, and the system After receiving the short message of the user's location service request, the content of the short message is sent to the application server through the location service gateway, and the located user and service content are analyzed in the application server, and the location request is sent to the location server; the location server passes the location service gateway Initiate a positioning request to the wireless local telephone system. After the wireless local telephone system obtains the user's location information through positioning, it returns the user's location information to the positioning server. The positioning server performs secondary processing on the location information and converts it into latitude and longitude information and returns it to the application server; application After the server integrates the information content into a short message, it sends it back to the user who made the location service request through the location service gateway.

In the system for providing location services for wireless local phone users in the present invention, the positioning server can also provide an open interface to provide access to multiple third-party location service application service providers; the application server can also provide an open interface for third-party map services merchant access.

The method of providing location service for wireless local phone users in the form of short message in the present invention includes: the user initiates a request for location service through a short message; the location service system completes user positioning; and the system sends the service result to the user through a short message.

in:

The content of the location service may include querying the user's own location, specifying the location of other users, etc.;

The location service system completes user positioning, including:

6.1 The location service gateway sends the received service request information, user number and authentication password to the application server. After the application server passes the authentication, the application server sends the location number to the location server for location;

6.2 The positioning server initiates a user positioning request to the location service gateway, and sends the obtained user latitude and longitude information to the application server; here, the obtained user latitude and longitude information, according to different positioning methods, are:

7.1 For single base station positioning, the location service gateway returns the CSID (Cell Station ID, base station identification) of the base station, and the positioning server finds out the longitude and latitude corresponding to the CSID in the positioning server database, and converts the base station identification information into longitude and latitude;

7.2 For multi-base station positioning, the location service gateway returns the channel and signal strength of the positioning terminal obtained and reported by multiple base stations. After obtaining the information, the positioning server obtains high-precision latitude and longitude information through position calculation;

7.3 For GPS positioning, the terminal obtains the current location longitude and latitude information of the terminal through the built-in GPS module, and transmits it to the positioning server as the result of positioning processing;

6.3 The application server integrates the obtained results into a short message, and sends it to the location service gateway together with the user number;

6.4 The location service gateway sends the short message to the user.

Between the steps 6.2 and 6.3, it may also include: the application server sends the latitude and longitude to the map server, and the landmarks of the map server are associated with information vectors such as traffic and service places. Or the service place information is returned to the application server.

In the above method, a user registration step may also be included, the user applies for registration by sending a short message, and the content may include business content and password.

Adopt technical scheme of the present invention, have following advantage:

1) The user's business application and usage methods are simple, the operation method conforms to the current habits and trends, and the display content is complete and clear.

2) The short message has a memory function on the mobile phone, and the location service request is sent and the location service result is received through the short message for later viewing.

3) After the system obtains the location service result, it will send a short message to the user. Users don't have to wait forever after making a request. Now the location service is generally provided through paging, and the paging response takes 8 to 12 seconds, which is relatively long. The location service is implemented by means of short messages, and the user is not very sensitive to the response time. The real-time requirements are relatively low, which reduces the requirements for system positioning time.

4) The independence of the location service is good, the upgrade is simple, and the short message and call of the original PHS network are not affected.

5) The system has good scalability and provides multiple access points for external applications.

Description of drawings

Fig. 1 is a schematic structural diagram of the PHS system and a schematic structural diagram of the PHS location service system of the present invention;

Fig. 2 is the flow chart that realizes the opening of user's location service authority by short message;

Fig. 3 is the return receipt flow chart of realizing location service authority opening through short message;

Fig. 4 is a flow chart of the method for providing location services to wireless local phone users in the form of short messages in the present invention.

Detailed ways

The process of the present invention to provide location services for users is as follows:

1) User registration, as well as canceling users, changing passwords, etc.;

2) The user initiates a location service request;

3) The system locates the located user according to the user location service request;

4) The system obtains the user's current location information (latitude and longitude), and sends the location and service request to the map application server;

5) After the map application server obtains the service result, it returns the result to the system and sends it to the user terminal.

In order to realize the complete location service in the PHS system, a complete location service system is required. The location service system in the present invention includes a location service gateway, a positioning server and an application server, wherein the location service gateway is connected to the existing PHS network, and provides message filtering, data conversion and network security between the location service system and the PHS system Control; the location service positioning server receives the positioning request and returns the location information (latitude and longitude) of the positioned user. The positioning server provides an open interface and can provide access to multiple third-party location service application service providers, positioning server and location service gateway Jointly complete the function of user positioning; the application server implements functions such as control from application request to application result return, content provision, etc. The application server has a map server and also provides an open interface for third-party map service providers to access.

The basic process of using short message to realize location service in PHS system is as follows:

1) Users register users and services through short messages

The user sends a short message to a special service number according to the required format. The content of the short message includes the service and password applied by oneself. The system sends a receipt to the user whether the business application is successful or not through a short message. The user can modify the password and business through short messages in the future, and can set the family number that allows him to be located.

2) The user initiates a location service request through a short message

The user sends a short message to a special service number according to the required format. The content of the short message includes the content of the location service request. If it is to locate another user, the number and service password of the other user must also be input.

3) The system completes user positioning

After the system receives the short message of the user's location service request, it sends the content of the short message to the application server through the location service gateway, analyzes the content on the application server, determines the located user and the service content, and sends the location request to the location server. The positioning server initiates a positioning request to the PHS system through the location service gateway. After the PHS system obtains the user's location information through positioning, it returns the location information of the user to the positioning server. GPS positioning, etc.) convert the location information into longitude and latitude through secondary processing. The positioning server returns the latitude and longitude of the user's location to the application server.

4) The system sends the service result to the user through a short message

After the application server obtains the user's location, it sends the user's location and service content to the map server. The landmarks of the map server are associated with information vectors such as traffic and service places. The map server returns the acquired traffic or service location information to the application server through the user's location and service content. After the application server integrates the content into a short message, it sends it back to the user requesting the location service.

If this service is opened for all users, or if the user has already registered, the registration step can be omitted.

For those that only need latitude and longitude information, the map server may not be required, and corresponding steps may be omitted.

Utilize the position service that the present invention can provide and include: query own position (where am I) by short message, query the position of designated user by short message (where is he), carry out designated user position tracking by short message (his position moves Condition).

On the basis of realizing the basic location service, the system provides flexible application expansion, and realizes the access of various services of the system through an external application server, such as: emergency assistance, vehicle dispatching, service information provision of shops, theaters, etc., traffic information and Business Advertisement etc.

The present invention is described below with embodiment in conjunction with accompanying drawing:

1. System Architecture

As shown in Figure 1, the original wireless local telephone PHS system consists of mobile phones, base stations, base station controllers, access units, PHS system gateways, home location registers HLR, and short message centers. The PHS location service system in the present invention is composed of a location service gateway, a location server and an application server. The location service gateway provides message filtering, data conversion and network security control between the location service system and the PHS system; the location service positioning server receives the positioning request and returns the location information (latitude and longitude) of the positioned user. The positioning server provides an open interface and can provide The access of multiple third-party location service application service providers, the positioning server and the location service gateway jointly complete the function of user positioning; the application server realizes functions such as control from application request to application result return, content provision, etc., and the application server has a map The server also provides an open interface for third-party map service providers to access. The location service gateway is transformed from the original access unit, and is connected to the PHS system gateway through No. 7 signaling, and the PHS system gateway does not need to be modified.

How does the user's short message interact with the PHS location service system?

Configure a special service number on the location service gateway, the user only needs to send the service request to the special service number through SMS, and the short message with the user service request content will be sent to the location service gateway through the SMS center, and the gateway will parse the short message into the location The information structure required by the service system is enough. When the system sends the returned result to the user through a short message, use the reverse path to send the organized short message to the user through the gateway.

Such a system architecture makes the network, base stations and mobile phones of the original PHS system do not need any modification, and the functional structure of each part of the location service system is clear, and the application can be flexibly expanded, positioning and application are separated, and the design level is clear. Reasonable, good scalability.

2. Business process

1) The process of opening the user's location service permission

As shown in Figure 2, the user sends the service type and authentication password to the location service gateway through a short message, and the location service gateway sends the content of the short message and the calling number to the application service, and the application server parses out the service type, calling number and The authentication password is stored in the database of the application server.

2) The user's location service authorization activation receipt process

As shown in Figure 3, the application server database sends the user number, service type, processing result and reason to the application server, and the application server integrates the returned content into a short message, and sends it to the location service gateway together with the user number. The location service gateway simulates a short message and sends it to the user terminal.

3) The process of the user requesting the location service through the short message and the location service result return

As shown in Figure 4;

Step 1: The user initiates a location service request and sends it to the location service gateway through the short message center.

Step 2: The location service gateway sends the service request, location number, user number and authentication password to the application server, and the application server sends these information to the database of the application server for authentication. After passing the authentication, the application server sends the positioning number to the positioning server for positioning.

Step 3: The positioning server initiates a user positioning request to the location service gateway, and the location service gateway returns the CSID of the base station (the positioning method in this example is single base station positioning, other types of positioning methods have been described in detail in the content of the invention in this specification ), the positioning server finds out the latitude and longitude corresponding to the CSID in the positioning server database, and returns the latitude and longitude to the application server.

Step 4: The application server sends the latitude and longitude and the service request to the map server, and obtains the query result of the service request.

Step 5: The application server integrates the obtained service request result into a short message, and sends it to the location service gateway together with the user number.

Step 6: The location service gateway sends a simulated short message to the user terminal requesting the location service.

Claims (8)

1. the system for the service of Personal Handyphone System(PHS) user-provided location comprises interconnective location-based service gateway, location-server and application server; Described location-based service gateway links to each other with existing radio local telephone network by signalling system No.7, after the short message of user location services request is received by described system, by the location-based service gateway content of short message is issued application server, in application server parses go out to be positioned user and service content, Location Request is issued location-server; Location-server is initiated Location Request by the location-based service gateway to wireless local telephone system, after wireless local telephone system obtains customer position information by the location, the positional information at user place is returned to location-server, and location-server carries out positional information to return to application server after aftertreatment changes into latitude and longitude information; After application server is integrated into short message with the information content, send back to the user who proposes location service request by the location-based service gateway.

2. the described system for the service of Personal Handyphone System(PHS) user-provided location of claim 1 is characterized in that described application server has map server.

3. claim 1 or 2 described systems for the service of Personal Handyphone System(PHS) user-provided location is characterized in that described location-server also externally provides open interface, for third party's location-based service application service provider's access; Described application server also can provide open interface to insert for third party's Map Services merchant.

4. one kind is Personal Handyphone System(PHS) user-provided location service method with short message way, may further comprise the steps:

4.1 the user initiates the request of location-based service by short message;

4.2 position service system is finished the user location;

4.3 position service system is issued the user with service result by short message;

The position service system of described step 4.2 is finished the user location, comprising:

6.1 the location-based service gateway is issued application server with the service request information that receives and Subscriber Number and authentication password, after the application server authentication is passed through, application server will be located number and be issued location-server and position;

6.2 location-server is initiated user positioning request to the location-based service gateway, and the user's latitude and longitude information that obtains is issued application server;

6.3 the result that application server will obtain is integrated into short message, issues the location-based service gateway together with Subscriber Number;

6.4 the location-based service gateway is issued the user with short message.

5. claim 4 is described is Personal Handyphone System(PHS) user-provided location service method with short message way, it is characterized in that the content of the location-based service in the described step 4.1 can comprise the position of inquiring user oneself, the position of specifying other users, customer location relevant information on every side.

6. claim 4 is described is Personal Handyphone System(PHS) user-provided location service method with short message way, it is characterized in that, obtains user's latitude and longitude information in the described step 6.2, according to the localization method difference, is respectively:

7.1 for location, single base station, the location-based service gateway returns the sign of base station, location-server becomes longitude and latitude with the base station identification information treatment conversion;

7.2 for location, many base stations, the location-based service gateway returns is that a plurality of base stations obtain and channel, the signal strength signal intensity at the locating terminal place that reports, after location-server obtains information, by position calculation, obtains high-precision latitude and longitude information;

7.3, then be that terminal obtains the current position latitude and longitude information of this terminal by built-in GPS module, and send location-server to, as the result of localization process for the GPS location.

7. claim 4 is described is Personal Handyphone System(PHS) user-provided location service method with short message way, it is characterized in that, also comprise between described step 6.2 and step 6.3: application server is issued map server with longitude and latitude, the terrestrial reference of map server is related with dope vectors such as traffic, service locations, map server returns to application server to traffic of obtaining or service location information by customer location and service content.

8. the arbitrary claim of claim 4 to 7 is described is Personal Handyphone System(PHS) user-provided location service method with short message way, it is characterized in that, also comprise user's registration step, the user applies for the registration of by short-message sending, and content can comprise business tine and password.

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