Method and apparatus for voice packet communications

• US 6,130,883 A
• Filed: 07/30/1998
• Issued: 10/10/2000
• Est. Priority Date: 07/30/1998
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Gupta, Sanjay, Spear, Stephen
• Primary Examiner(s): Hsu, Alpus H.
• Assistant Examiner(s): HO, DUC CHI
• Application Number:
  US09/124,946
• Time in Patent Office: 803 Days
• Field of Search: 370/328, 370/335, 370/349, 370/338, 370/352, 370/356, 370/342, 370/379, 370/401, 370/465, 370/466, 370/467, 455/49.1, 455/54.1, 455/509, 455/507, 455/517, 340/825.03
• US Class Current: 370/328
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 88/181 Transcoding devices; Rate adaptation devices

Abstract

A wireless communication system (100) provides an over the air efficient communication of packet voice information between a mobile station (MS) (101) and a host (112) connected to a data packet switching network (110). Via a wireless link (102), a base station system BSS (118) receives voice channel coded voice information from MS 101, after decoding in BSS (118), adapting a decoded voice information to a data packet switching format, and communicating the decoded voice information to host (112) through data network (101).

Claims

1. In a communication system providing communication of voice information between a mobile station (MS) and a host through a base station system (BSS) and a data packet switching network, a method comprising the steps of:

establishing a wireless link between said MS and BSS;

channel coding said voice information according to a channel coding scheme to produce channel coded voice information;

transmitting said channel coded voice information over said wireless link;

receiving said channel coded voice information over said wireless link;

channel decoding said channel coded voice information based on said channel coding scheme to produce decoded voice information; and

adapting format of said decoded voice information to a data packet switching format suitable for transportation of said decoded voice information over said data packet switching network or format of said decoded voice information from data packet switching format to a format suitable for said channel coding, wherein said adapting format of said decoded voice information step includes adding protocol data bits to said decoded voice information.

2. The method as recited in claim 1 further comprising the step of selecting said coding scheme from a plurality of coding schemes.

3. The method as recited in claim 2 wherein said plurality of coding schemes includes a predefined voice channel coding scheme paired with said voice information.

4. The method as recited in claim 2 wherein said plurality of coding schemes includes a data channel coding scheme.

5. The method as recited in claim 1 further comprising the steps of:

exchanging data information from a data information generator device; and

adapting format of said data information according to a voice information format to produce said voice information.

6. The method as recited in claim 5 wherein said adapting format of said data information step includes one of removing and adding protocol stacking.

7. The method as recited in claim 5 wherein said voice information format is suitable for channel coding said voice information according to said channel coding scheme.

8. The method as recited in claim 5 wherein said adapting format of said data information step includes removing protocol data bits from said data information to produce said voice information.

9. The method as recited in claim 5 wherein said adapting format of said data information step includes adding protocol data bits from said data information to produce said voice information.

10. The method as recited in claim 1 wherein said adapting format of said decoded voice information step includes adding protocol data bits to said decoded voice information.

11. The method as recited in claim 1 wherein said adapting format of said decoded voice information step includes one of removing and adding protocol stacking.

12. The method as recited in claim 11 wherein said protocol stacking is according to an internet protocol stacking.

13. The method as recited in claim 1 further comprising the step of enabling said adapting format of said decoded voice information step.

14. The method as recited in claim 13 wherein said enabling is directed by said BSS.

15. The method as recited in claim 14 further comprising the step of transmitting a message from said BSS to said MS via said wireless link directing said MS to switch from exchanging voice information in data mode to a voice mode.

16. The method as recited in claim 15 further comprising the step of switching said data channel coding of said voice information in said MS to said voice channel coding of said voice information according to said channel coding scheme.

17. The method as recited in claim 15 further comprising the step of directing said MS to switch from exchanging data information in voice mode to a data mode.

18. The method as recited in claim 13 wherein said enabling is directed by said MS via said wireless link.

19. The method as recited in claim 18 further comprising the step of transmitting a message from said MS to said BSS via said wireless link directing said BSS to enable said adapting format of said decoded voice information step.

20. The method as recited in claim 5 further comprising the step of enabling said adapting format of said data information step.

21. The method as recited in claim 20 wherein said enabling is directed by said BSS via said wireless link.

22. The method as recited in claim 20 wherein said enabling is directed by said MS.

23. In a communication system providing communication of voice information between a mobile station (MS) and a host through a base station system (BSS) and a data packet switching network connected to said host, an apparatus comprising:

means, in said BSS, for converting a radio frequency link signal transmitted from said MS to a channel coded information signal;

a voice channel codec means, coupled to said means for converting said radio frequency link signal, for decoding voice information of said channel coded information signal to produce a decoded voice information signal, wherein said means for voice channel coding includes means for selecting a voice channel coding scheme from a plurality of channel coding schemes;

a data channel codec means, coupled to said means for converting said radio frequency link signal, for decoding data information of said channel coded information signal to produce a decoded data information signal;

means for adapting protocol format of said decoded voice information signal according to a data packet switching format to produce a data packet switching signal carrying voice information;

means for coupling said data packet switching signal carrying voice information and decoded data information signal to said data packet switching network.

24. In a communication system providing communication of voice information between a mobile station (MS) and a host through a base station system (BSS) and a data packet switching network connected to said host, an apparatus comprising:

a voice codec means in said MS producing a voice information signal;

means for data and voice converter coupled to said voice codec means to convert said voice information signal to a first data information signal;

means for generating a second data information signal;

means for data channel coding said first and second data information signals;

means for voice channel coding said voice information signal, wherein said means for voice channel coding includes means for selecting a voice channel coding scheme from a plurality of channel coding schemes;

means for a protocol adapter coupled to said means for generating said second data information signal to adapt said second data information signal to a voice channel format suitable for voice channel coding by said means for voice channel coding;

means for radio frequency conversion of channel coded signals produced by said means for voice channel coding and means for data channel coding to produce a radio frequency link signal to be transmitted to said BSS.