Fast traffic channel reconnection system and method

• US 20040005883A1
• Filed: 05/08/2003
• Published: 01/08/2004
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Via Telecom Co., Ltd.
• Inventors: Lee, Anthony
• Granted Patent: US 7,062,263 B2
• Time in Patent Office: Days
• US Class Current: 455/422.1
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A method and apparatus for reducing call setup latency for a wireless device in a cellular network where the wireless device receives, stores, and analyzes base station overhead information to reduce the need to perform initialization after a call session terminates.

Claims

1. A system for communicating data signals using a cellular network, comprising:

a plurality of base stations coupled to the cellular network, each base station of the plurality of base stations including means for transmitting base station overhead information; and

a wireless device coupled to the cellular network, the wireless device including;

a) means for receiving the base station overhead information;

b) means for storing the received base station overhead information; and

c) means for processing the received base station overhead information to determine whether the received base station overhead information is current for one of the plurality of base stations after a call session is completed.

2. The system of claim 1, wherein the wireless device further includes means for conducting a call session with at least one of the plurality of base stations.

3. The system of claim 2, wherein the wireless device maintains an active base station set that includes a sub-set of the plurality of base stations.

4. The system of claim 3, wherein the at least one of the plurality of base stations includes means for transmitting overhead information for each base station in the active base station set when a call session ends with the at least one of the plurality of base stations.

5. The system of claim 4, wherein the cellular network is a CDMA based network and wherein the base station overhead information includes at least one of the following overhead parameters:

a Pseudorandom Noise Offset, a CDMA channel number, a CDMA Band Class, a Station Identifier, a Network Identifier pair, a Protocol Revision, a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

6. The system of claim 4, wherein the cellular network is a CDMA based network and wherein the overhead information includes at least one of the following BCCH overhead parameters:

a BCCH code channel, a BCCH data rate, and a BCCH coding rate.

7. The system of claim 4, wherein the cellular network is a CDMA based network and wherein the overhead information includes at least one of the following PCH overhead parameters:

a PCH code channel and a PCH data rate.

8. The system of claim 4, wherein the cellular network is a CDMA based network and wherein the overhead information includes at least one of the following overhead parameters:

a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

9. The system of claim 8, wherein the processing means determines whether BCCH overhead parameters for a base station, including the BCCH code channel, the BCCH data rate, and the BCCH coding rate, are current.

10. The system of claim 7, wherein the processing means determines whether the PCH overhead parameters for a base station are current.

32. The article of manufacture of claim 31, wherein the program logic causes control circuitry to perform the further step of conducting a call session with at least one of the plurality of base stations.

33. The article of manufacture of claim 32, wherein the wireless device maintains an active base station set that includes a sub-set of the plurality of base stations.

34. The article of manufacture of claim 33, wherein the step of receiving base station overhead information includes receiving overhead information for each base station in the active base station set when a call session ends with the at least one of the plurality of base stations.

35. The article of manufacture of claim 34, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following overhead parameters:

a Pseudorandom Noise Offset, a CDMA channel number, a CDMA Band Class, a Station Identifier, a Network Identifier pair, a Protocol Revision, a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

36. The article of manufacture of claim 34, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following BCCH overhead parameters:

a BCCH code channel, a BCCH data rate, and a BCCH coding rate.

37. The article of manufacture of claim 34, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following PCH overhead parameters:

a PCH code channel and a PCH data rate.

38. The article of manufacture of claim 34, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following overhead parameters:

a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

39. The article of manufacture of claim 38, wherein the processing step includes determining whether BCCH overhead parameters for a base station, including the BCCH code channel, the BCCH data rate, and the BCCH coding rate, are current.

40. The article of manufacture of claim 38, wherein the processing step includes determining whether PCH overhead parameters for a base station, including the PCH code channel and the PCH data rate, are current.

11. A wireless device for communicating data signals using a cellular network, the cellular network including a plurality of base stations coupled to the cellular network, comprising:

a) means for receiving base station overhead information;

b) means for storing the received base station overhead information; and

c) means for processing the received base station overhead information to determine whether the received base station overhead information is current for one of the plurality of base stations after a call session is completed.

12. The wireless device of claim 11, wherein the wireless device further includes means for conducting a call session with at least one of the plurality of base stations.

13. The wireless device of claim 12, wherein the wireless device maintains an active base station set that includes a sub-set of the plurality of base stations.

14. The wireless device of claim 13, wherein the means for receiving base station overhead information includes means for receiving overhead information for each base station in the active base station set when a call session ends with the at least one of the plurality of base stations.

15. The wireless device of claim 14, wherein the cellular network is a CDMA based network and the overhead information includes at least one of-the following overhead parameters:

a Pseudorandom Noise Offset, a CDMA channel number, a CDMA Band Class, a Station Identifier, a Network Identifier pair, a Protocol Revision, a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

16. The wireless device of claim 14, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following BCCH overhead parameters:

a BCCH code channel, a BCCH data rate, and a BCCH coding rate.

17. The wireless device of claim 14, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following PCH overhead parameters:

a PCH code channel and a PCH data rate.

18. The wireless device of claim 14, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following overhead parameters:

a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

19. The wireless device of claim 18, wherein the processing means determines whether BCCH overhead parameters for a base station, including the BCCH code channel, the BCCH data rate and the BCCH coding rate, are current.

20. The wireless device of claim 18, wherein the processing means determines whether PCH overhead parameters for a base station, including the PCH code channel and the PCH data rate, are current.

21. A method for a wireless device to communicate data signals in a cellular network, the cellular network including a plurality of base stations coupled to the cellular network, the method comprising the steps of:

a) receiving base station overhead information;

b) storing the received base station overhead information; and

c) processing the received base station overhead information to determine whether the received base station overhead information is current for one of the plurality of base stations after a call session is completed.

22. The method of claim 21, further comprising the step of conducting a call session with at least one of the plurality of base stations.

23. The method of claim 22, wherein the wireless device maintains an active base station set that includes a sub-set of the plurality of base stations.

24. The method of claim 23, wherein the step of receiving the base station overhead information includes receiving overhead information for each base station in the active base station set when a call session ends with the at least one of the plurality of base stations.

25. The method of claim 24, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following overhead parameters:

a Pseudorandom Noise Offset, a CDMA channel number, a CDMA Band Class, a Station Identifier, a Network Identifier pair, a Protocol Revision, a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

26. The method of claim 24, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following BCCH overhead parameters:

a BCCH code channel, a BCCH data rate, and a BCCH coding rate.

27. The method of claim 24, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following PCH overhead parameters:

a PCH code channel and a PCH data rate.

28. The method of claim 24, wherein the cellular network is a CDMA based network and the overhead information includes at least one of the following overhead parameters:

a BCCH code channel, a BCCH data rate, a BCCH coding rate, a PCH code channel, and a PCH data rate.

29. The method of claim 28, wherein the processing step includes determining whether BCCH overhead parameters for a base station, including the BCCH code channel, the BCCH data rate, and the BCCH coding rate, are current.

30. The method of claim 28, wherein the processing step includes determining whether PCH overhead parameters for a base station, including the PCH code channel and the PCH data rate, are current.

31. An article of manufacture for use in a wireless device communicating data signals in a cellular network, the cellular network including a plurality of base stations coupled to the cellular network, the article of manufacture comprising computer readable storage media including program logic embedded therein that causes control circuitry to perform the steps of:

a) receiving base station overhead information;

b) storing the received base station overhead information; and

c) processing the received base station overhead information to determine whether the received base station overhead information is current for one of the plurality of base stations after a call session is completed.