System and method of providing a mobile station's service support information to a radio telecommunications network

• US 5,918,177 A
• Filed: 03/03/1997
• Issued: 06/29/1999
• Est. Priority Date: 11/27/1996
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Corriveau, Michel, Minichiello, Pat
• Primary Examiner(s): Urban, Edward F.
• Assistant Examiner(s): TRAN, PABLO N
• Application Number:
  US08/810,700
• Time in Patent Office: 848 Days
• Field of Search: 455/422, 455/445, 455/458, 455/432, 455/403, 455/414, 455/434, 455/433, 370/54, 370/329, 379/57, 379/58
• US Class Current: 455/432.3
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/12 Inter-network notification

Abstract

A system and method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type in a radio telecommunications network in which both voice service and data service are provided. A service code generator in a serving mobile switching center (MSC) generates a service code that indicates the calling party'"'"'s service type. The service code is sent in a page from the serving MSC to the mobile station, and includes the service code. An expected service code generator in the called mobile station generates an expected service code that indicates the called mobile station'"'"'s expected service type. The expected service code is sent in a page response from the mobile station to a border MSC that borders the serving MSC. The border MSC extracts the expected service code and sends it to the serving MSC where it is compared with the calling party'"'"'s service code. If the service codes match, the call is connected to the mobile station. If the service codes do not match, the mobile station is denied access to the radio telecommunications network.

Claims

1. In a radio telecommunications network in which both voice service and data service are provided, a method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type, said method comprising the steps of:

sending a page from a serving mobile switching center (MSC) to said mobile station, said page including a service code indicating the calling party'"'"'s service type;

sending a page response from said mobile station to a border MSC that borders said serving MSC, said page response including an expected service code indicating the called mobile station'"'"'s expected service type;

sending said expected service code from said border MSC to said serving MSC;

determining in said serving MSC whether said service code matches said expected service code;

connecting said call to said mobile station upon determining that said service code matches said expected service code; and

denying said mobile station access to said telecommunications network upon determining that said service code does not match said expected service code.

2. In a radio telecommunications network in which both voice service and data service are provided, a method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type, said method comprising the steps of:

sending a page from a serving mobile switching center (MSC) to said mobile station, said page including a service code indicating the calling party'"'"'s service type;

sending a page response from said mobile station to a border MSC that borders said serving MSC, said page response including an expected service code indicating the called mobile station'"'"'s expected service type;

sending said expected service code from said border MSC to said serving MSC in an unsolicited response invoke message;

determining in said serving MSC whether said service code matches said expected service code;

connecting said call to said mobile station upon determining that said service code matches said expected service code; and

denying said mobile station access to said telecommunications network upon determining that said service code does not match said expected service code.

3. The method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type of claim 2 wherein it is determined that said service code does not match said expected service code, said method further comprising sending a reason for denying access from said serving MSC to said border MSC.

4. The method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type of claim 3 wherein said step of sending a reason for denying access from said serving MSC to said border MSC includes sending an access denied reason parameter in an unsolicited response return result message.

5. The method of ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type of claim 3 wherein said step of determining in said serving MSC whether said service code matches said expected service code includes determining whether said service code and said expected service code are of the same service type.

6. In a radio telecommunications network in which both voice service and data service are provided, a system for ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type, said system comprising:

a service code generator in a serving mobile switching center (MSC) for generating a service code that indicates the calling party'"'"'s service type;

a first paging mechanism in the serving MSC for sending a page from the serving MSC to said mobile station, said page including the service code indicating the calling party'"'"'s service type;

an expected service code generator in the called mobile station for generating an expected service code that indicates the called mobile station'"'"'s expected service type;

a second paging mechanism in said called mobile station for sending a page response from said mobile station to a border MSC that borders said serving MSC, said page response including an expected service code indicating the called mobile stations expected service type;

means for sending said expected service code from said border MSC to said serving MSC;

a service code comparison mechanism in said serving MSC for determining whether said service code matches said expected service code;

means for connecting said call to said mobile station upon determining that said service code matches said expected service code; and

means for denying said mobile station access to said telecommunications network upon determining that said service code does not match said expected service code.

7. In a radio telecommunications network in which both voice service and data service are provided, a system for ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type, said system comprising:

a service code generator in a serving mobile switching center (MSC) for generating a service code that indicates the calling party'"'"'s service type;

a first paging mechanism in the serving MSC for sending a page from the serving MSC to said mobile station, said page including the service code indicating the calling party'"'"'s service type;

an expected service code generator in the called mobile station for generating an expected service code that indicates the called mobile station'"'"'s expected service type;

a second paging mechanism in said called mobile station for sending a page response from said mobile station to a border MSC that borders said serving MSC, said page response including an expected service code indicating the called mobile station'"'"'s expected service type;

means for sending said expected service code from said border MSC to said serving MSC, said sending means including means for sending said expected service code in an unsolicited response invoke message;

a service code comparison mechanism in said serving MSC for determining whether said service code matches said expected service code;

means for connecting said call to said mobile station upon determining that said service code matches said expected service code; and

means for denying said mobile station access to said telecommunications network upon determining that said service code does not match said expected service code.

8. The system for ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type of claim 7 wherein it is determined that said service code does not match said expected service code, said system further comprising means for sending a reason for denying access from said serving MSC to said border MSC.

9. The system for ensuring that a called mobile station'"'"'s expected service type matches a calling party'"'"'s service type of claim 8 wherein said means for sending a reason for denying access from said serving MSC to said border MSC includes an access denied reason parameter in an unsolicited response return result message.