CN1301631C - Method of providing third-party positioning for GSM users (2) - Google Patents

Abstract

A method for a CDMA network to provide a third-party location to a GSM mobile user entering the CDMA network, comprising: a CDMA MPC regards a G&C gateway as a CDMA MSC visited by a user, and sends a trigger location short message MT to a corresponding G&C gateway; the G&C gateway Judging that this is a short message MT for positioning services, it will be sent to the GSM user through the CDMA MSC; after the G&C gateway receives the response message returned by the CDMA MSC, it will return the response message to the CDMA MPC; the GSM roaming to the CDMA network The user will agree to send the positioning short message MO to the CDMA MPC through the CDMA MSC. The invention only needs to modify the processing flow of the G&C gateway and the CDMA MPC, and provides the third-party positioning service of the CDMA network to the GSM user roaming to the CDMA network.

Description

Method of providing third-party positioning for GSM users (2)

technical field

The invention relates to the field of mobile communication, in particular to a technique for positioning a GSM mobile user entering a CDMA network.

Background technique

In order to realize mutual roaming between the GSM network and the CDMA network, it is necessary to add a device between the CDMA network and the GSM network to be responsible for the conversion of signaling, parameters and services of the two networks. This device is called IIF (Interworking and Interoperation Function) in the standard of 3GPP2 (Third Generation Partnership Project 2, third-generation mobile communication standardization partner project 2), and is called G&C in China Unicom's technical specifications The gateway (GSM&CDMA gateway) is collectively referred to as the G&C gateway in the present invention for simplicity of description. The G&C gateway is an existing technology, and for details, refer to the N.S0028 protocol of 3GPP2.

In a CDMA network, there are two ways of triggering location services: mobile node triggering (self-location) and network triggering (third-party positioning). For simplicity of description, the present invention refers to these two different trigger modes as self-location and third-party location services. Self-location is a positioning service triggered by a mobile node, mainly including self-location query, electronic map, etc.; third-party positioning is a positioning service triggered by the network, mainly including other person's location query, vehicle tracking, etc. During the realization of this type of service, The network needs to confirm the service area where the inquired party is currently located through a certain mechanism, so as to establish a certain connection (signaling connection, TCP/IP connection, etc.), and needs to determine whether the searching party has the right to query the location of the searched party. According to the prior art, when a GSM user roams to a CDMA network, it can use the self-location service like a CDMA local network user, but cannot use a third-party location service. The reasons are as follows:

1) The third-party positioning business process includes: CDMA MPC (CDMA Mobile Positton Center, CDMA Mobile Positioning Center) needs to send a trigger positioning short message MT (Mobile Station Termination, mobile station terminal call) to the positioned user, and the positioned user sends a message to the CDMA MPC Return a short message MO (Mobile Station Origination) for positioning service, indicating whether to agree to be positioned.

2) The GSM user's short message sending and receiving process in the CDMA network includes: when a GSM user receives a short message, the GSM short message center to which it belongs must send it to the CDMA MSC (CDMA Mobile Switching Center) visited by the user through the G&C gateway; When sending a short message, it must also be sent to the GSM short message center to which it belongs through the G&C gateway.

Therefore, according to the current technology, the CDMA MPC cannot send this short message MT for positioning to the GSM user roaming to the CDMA network.

Contents of the invention

The technical problem to be solved by the invention is to solve the sending of short message MT used for positioning, so as to provide third-party positioning service to GSM users roaming to CDMA network.

For the sake of brevity, the following conventions are made:

Mobile Station Termination: Mobile Station Termination, collectively referred to as MT in the present invention;

Mobile Station Origination: mobile station origination, collectively referred to as MO in the present invention;

CDMA Mobile Position Center: CDMA mobile positioning center, collectively referred to as CDMA MPC in the present invention.

Technical scheme of the present invention is:

1.1 When the CDMA MPC needs to send a trigger positioning short message MT to a GSM user roaming to a CDMA network, the G&C gateway is regarded as the CDMA MSC visited by the user, and the trigger positioning short message MT is sent to the corresponding G&C gateway; the CDMA MPC can be based on Obtain the address of the corresponding G&C gateway for the GSM user number or number segment;

1.2 The G&C gateway judges that this is a short message MT for positioning services, then sends it to the CDMA MSC visited by the GSM user, and then the CDMA MSC sends it to the GSM user;

1.3 After receiving the response message returned by the CDMA MSC, the G&C gateway returns a response message to the CDMA MPC;

1.4 The GSM user roaming to the CDMA network will agree to send the positioning short message MO to the CDMA MPC through the CDMAMSC; or send it to the G&C gateway through the CDMA MSC. If it is sent to the G&C gateway, then perform one of the following two steps:

1) The G&C gateway sends the short message MO that agrees to locate to the GSM short message center to which the GSM user belongs as a common originating short message; the GSM short message center sends the short message MO that agrees to locate to the CDMA MPC through the CDMA short message center, Or send directly to CDMA MPC.

2) When the G&C gateway receives the short message MO that agrees to positioning, it judges that this is a short message MO for positioning services, and then sends it to the CDMA MPC.

Utilize the solution that the present invention proposes, only need to revise the processing flow of G&C gateway and CDMA MPC, just can under the condition that does not change or change the main switching equipment in CDMA network and GSM network very little (if directly send to agree by CDMA MSC To locate the short message to the MPC, the existing CDMA MSC needs to judge that the short message is a short message for positioning, but the MSC of the existing network does not make this judgment, so it needs to be changed. In actual operation, generally not This happens.) Provide third-party positioning service of CDMA network to GSM users roaming to CDMA network.

Description of drawings

Fig. 1 is a schematic flow chart of an embodiment of the present invention.

Fig. 2 is a schematic flow chart of another embodiment of the present invention.

Fig. 3 is a schematic flowchart of another embodiment of the present invention.

Detailed ways

The main content of the invention is to send the trigger positioning short message to the GSM user roaming to the CDMA network, and send the agree positioning short message to the CDMA MPC. Three specific implementations of the present invention will be described below in conjunction with the accompanying drawings.

One of the implementation methods:

Referring to Figure 1, GSM users have successfully connected to the CDMA network, and need to trigger third-party positioning services for them:

101) The CDMA MPC sends the trigger positioning short message MO to the corresponding G&C gateway;

102) The G&C gateway judges that this is a trigger positioning short message MT, and then sends it to the CDMA MSC, and then the CDMA MSC sends it to the GSM user MS;

103) After the G&C gateway receives the response message returned by the CDMA MSC, it returns a response message to the CDMA MPC;

104) The GSM user will agree to send the positioning short message MO to the CDMA MSC, and the CDMA MSC will send it to the CDMA MPC.

The second implementation mode:

Referring to Figure 2, the GSM user has successfully connected to the CDMA network, and needs to trigger the third-party positioning service for it:

201) The CDMA MPC sends the trigger positioning short message MO to the corresponding G&C gateway;

202) The G&C gateway judges that this is a trigger positioning short message MT, and then sends it to the CDMA MSC, and then the CDMA MSC sends it to the GSM user MS;

203) After the G&C gateway receives the response message returned by the CDMA MSC, it returns a response message to the CDMA MPC;

204) The GSM user will agree to send the positioning short message MO to the CDMA MSC. CDMA MSC sends it to G&C gateway;

205) G&C gateway sends this short message to the GSM short message center to which the GSM user belongs as a common short message;

106) After the G&C gateway receives the response message from the GSM short message center, it sends a response message to the CDMA MSC;

207) If the CDMA MPC supports the connection with the GSM short message center, the GSM short message center directly sends the short message to the CDMA MPC, otherwise the GSM short message center sends the short message to the CDMA MPC through the CDMA short message center.

The third implementation mode:

Referring to Figure 3, the GSM user has successfully connected to the CDMA network, and needs to trigger the third-party positioning service for it:

301) The CDMA MPC sends the trigger positioning short message MO to the corresponding G&C gateway;

302) The G&C gateway judges that this is a trigger positioning short message MT, and then sends it to the CDMA MSC, and then the CDMA MSC sends it to the GSM user MS;

303) After the G&C gateway receives the response message returned by the CDMA MSC, it returns a response message to the CDMA MPC;

304) The GSM user will agree to send the positioning short message MO to the CDMA MSC. CDMA MSC sends it to CDMA MPC;

305) G&C gateway will judge that this short message is a short message MO for positioning, then directly send it to CDMA MPC;

306) After receiving the response message from the CDMA MPC, the G&C gateway sends a response message to the CDMA MSC.

Claims (3)

1. A method for providing third-party positioning for GSM users, comprising: 1.1 When the CDMA mobile positioning center needs to send a terminal call trigger positioning short message to a GSM user roaming to a CDMA network, it sends a terminal call trigger positioning short message to the corresponding G&C gateway; 1.2 The G&C gateway determines that it is an end-call short message for positioning services, and sends it to the CDMA mobile switching center visited by the GSM user, and then the CDMA mobile switching center sends it to the GSM user; 1.3 After the G&C gateway receives the response message returned by the CDMA mobile switching center, it returns a response message to the CDMA mobile positioning center; 1.4 The GSM user sends the short message of originating call approval and positioning to the CDMA mobile positioning center through the CDMA mobile switching center. 2. A method for providing third-party positioning for GSM users, comprising: 2.1 When the CDMA mobile positioning center needs to send a terminal call trigger positioning short message to a GSM user roaming to a CDMA network, it sends a terminal call trigger positioning short message to the corresponding G&C gateway; 2.2 The G&C gateway judges that it is an end-call short message for positioning services, and sends it to the CDMA mobile switching center visited by the GSM user, and then the CDMA mobile switching center sends it to the GSM user; 2.3 After the G&C gateway receives the response message returned by the CDMA mobile switching center, it returns a response message to the CDMA mobile positioning center; 2.4 The GSM user sends the short message of originating call consent to the G&C gateway through the CDMA mobile switching center; 2.5 The G&C gateway sends the short message of the originating call to the GSM short message center to which the GSM user belongs as an ordinary short message of the originating call; 2.6 After the G&C gateway receives the response message from the GSM short message center, it sends the response message to the CDMA mobile switching center; 2.7 The GSM short message center sends the short message that the caller agrees to locate directly to the CDMA mobile positioning center; or sends it to the CDMA mobile positioning center through the CDMA short message center. 3. A method for providing third-party positioning for GSM users, comprising: 3.1 When the CDMA mobile positioning center needs to send a terminal call trigger positioning short message to a GSM user roaming to a CDMA network, it sends a terminal call trigger positioning short message to the corresponding G&C gateway; 3.2 The G&C gateway judges that it is an end-call short message for positioning services, and sends it to the CDMA mobile switching center visited by the GSM user, and then the CDMA mobile switching center sends it to the GSM user; 3.3 After receiving the response message returned by the CDMA mobile switching center, the G&C gateway returns a response message to the CDMA mobile positioning center; 3.4 The GSM user sends the short message of originating call approval to the G&C gateway through the CDMA mobile switching center; 3. When the 5G&C gateway receives the originating short message, it judges that it is an originating short message for positioning service, and sends it to the CDMA MPC; 3.6 After receiving the response message from the CDMA mobile positioning center, the G&C gateway sends a response message to the CDMA mobile switching center.

Images