Combined base transceiver station and base station controller optimized assignment of frame offsets

• US 8,090,370 B2
• Filed: 01/18/2005
• Issued: 01/03/2012
• Est. Priority Date: 01/16/2004
• Status: Expired due to Fees

• Current Assignee: Open Invention Network LLC
• Original Assignee: AirWalk Communications, Inc. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Choi, Myoung Chul, Park, Jae Hong, Cha, Hyunyung
• Primary Examiner(s): Ghebretinsae, Temesgh
• Assistant Examiner(s): GONZALES, APRIL GUZMAN
• Application Number:
  US11/037,388
• Publication Number:
  US 20050188195A1
• Time in Patent Office: 2,541 Days
• Field of Search: 455/435.1, 455/433, 455/458, 455/436, 455/413, 455/414.1, 455/453, 370/331, 370/328, 370/335, 370/466, 709/202, 709/213, 714/4, 379/201.01, 379/207.02, 379/265.02
• US Class Current: 455/435.1
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A system, method, and computer readable medium for managing an availability of a call agent, comprising acquiring a session identification by a basestation (BS) and a call agent (CA), wherein the BS is coupled to the CA, if the CA'"'"'s state is changed from an active state to a standby state, requesting a new connection with the BS; and after the new connection is established between the CA and the BS, sending another session identification from the CA to the BS.

Claims

1. A method for managing an availability of a call agent, comprising:

acquiring a session identification by a basestation (BS) and a call agent (CA), wherein the BS is coupled to the CA;

if the CA'"'"'s state is changed from an active state to a standby state, requesting a new connection with the BS;

after the new connection is established between the CA and the BS, sending another session identification from the CA to the BS;

wherein the session identifications include a local session identification and a remote session identification;

wherein the local session identification and the remote session identification are shared between an active processor and a standby processor in the CA; and

starting a timer upon failure of a transport layer;

wherein if the timer expires, changing the local session identification if the BS has already released an existing call.

2. The method of claim 1, wherein the session identification message is the same as the other session identification message.

3. The method of claim 2 comprising:

continuing to process an existing call by the BS when the other session identification message is received.

4. The method of claim 1, wherein the new connection is established between a redundant CA and the BS.

5. The method of claim 1 wherein the local session identification and the remote session identification are shared between an active processor and a standby processor in the BS.

6. The method of claim 1, wherein the session identification is stored in a session initiation message sent between the BS and the CA.

7. The method of claim 1, wherein the session identification is used to check a status between the BS and the CA.

8. The method of claim 1, wherein the session identification is acquired to guarantee a return of a different session identification on a sequential restart.

9. The method of claim 8, wherein the different session identification alerts the BS or the CA that a new call is to be processed.

10. The method of claim 8, wherein utilizing a just used session identification would allow the BS or the CA to continue processing a previous call.

11. The method of claim 1, wherein until the session identification is issued, the BS should not send any application messages.

12. The method of claim 1, wherein until the session identification is issued, the CA should not send any application messages.

13. The method of claim 6, wherein the session initiation message includes at least one of:

a length, a message type, and a local session identification.

14. A system for managing an availability of a call agent, comprising:

a first module and a second module, wherein the first module is coupled to the second module, wherein the first module and the second module acquire a first identification by;

if the second module'"'"'s state is changed, a new connection is requested with the first module;

after the new connection is established between the second module and the first module, a second session identification is sent from the second module to the first module, wherein the second session identification is equivalent to the first session identification;

wherein the session identifications include a local session identification and a remote session identification;

wherein the local session identification and the remote session identification are shared between an active processor and a standby processor in the CA;

wherein a timer is started upon failure of a transport layer;

wherein if the timer expires, the local session identification is changed if the BS has already released an existing call.

15. A non-transitory computer readable medium comprising instructions for:

acquiring a first identification by a first module and a second module, wherein the first module is coupled to the second module;

if the second module'"'"'s state is changed, requesting a new connection with the first module;

sending a second session identification from the second module to the first module via the new connection, wherein the second session identification is equivalent to the first session identification;

wherein the session identifications include a local session identification and a remote session identification;

wherein the local session identification and the remote session identification are shared between an active processor and a standby processor in the CA; and

starting a timer upon failure of a transport layer;

wherein if the timer expires, changing the local session identification if the BS has already released an existing call.