Method and apparatus for a spectrally compliant cellular communication system

• US 9,306,658 B2
• Filed: 05/19/2014
• Issued: 04/05/2016
• Est. Priority Date: 12/20/1999
• Status: Expired due to Fees

• Current Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Original Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Inventors: Amalfitano, Carlo, Proctor, James A.
• Primary Examiner(s): AJIBADE AKONAI, OLUMIDE
• Application Number:
  US14/281,340
• Publication Number:
  US 20140254563A1
• Time in Patent Office: 687 Days
• Field of Search: 370/208, 370/209, 370/320, 370/328, 370/329, 370/335, 370/341, 370/342
• US Class Current: 1/1
• CPC Class Codes: H04B 7/216 Code division or spread-spectrum multiple access [CDMA, SSMA]
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• CPC Class Codes: H04L 25/00 Baseband systems
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 36/185 using make before break
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A system for wireless data transmission that uses a channel bandwidth, channel separation, and radio frequency power spectrum which is compatible with existing deployments of wireless voice services. The transmitted waveforms are thus compatible with existing cellular networks. However, the time domain digital coding, modulation, and power control schemes are optimized for data transmission. Existing cellular network sites can thus be used to provide a high speed service optimized for wireless data traffic without the need for new radio frequency planning, and without interfering with existing voice service deployments.

Claims

1. A code division multiple access (CDMA) subscriber unit comprising:

circuitry configured to receive a forward link CDMA code channel and a forward link packet data channel;

wherein the forward link packet data channel has a varying number of CDMA codes;

wherein the circuitry is further configured to transmit a reverse link CDMA code channel and a reverse link packet data channel;

wherein the reverse link packet data channel has a varying number of CDMA codes.

2. The CDMA subscriber unit of claim 1 wherein the forward link CDMA code channel carries voice data.

3. The CDMA subscriber unit of claim 1 wherein the reverse link CDMA code channel carries voice data.

4. The CDMA subscriber unit of claim 1 wherein CDMA code channels have an orthogonal code and a pseudo noise code.

5. The CDMA subscriber unit of claim 1 wherein the forward link and reverse link CDMA code channels are configured for soft handover and the forward link packet data channel is not configured for soft handover.

6. The CDMA subscriber unit of claim 1 wherein the forward link packet data channel is ⅓

rate forward error correction (FEC) encoded.

7. A code division multiple access (CDMA) base station comprising:

circuitry configured to transmit a forward link CDMA code channel and a forward link packet data channel;

wherein the forward link packet data channel has a varying number of CDMA codes;

wherein the circuitry is further configured to receive a reverse link CDMA code channel;

wherein the circuitry is further configured to receive a reverse link packet data channel;

wherein the reverse link packet data channel has a varying number of CDMA codes.

8. The CDMA base station of claim 7 wherein the forward link CDMA code channel carries voice data.

9. The CDMA base station of claim 7 wherein the reverse link CDMA code channel carries voice data.

10. The CDMA base station of claim 7 wherein CDMA code channels have an orthogonal code and a pseudo noise code.

11. The CDMA base station of claim 7 wherein the forward link and reverse link CDMA code channels are configured for soft handover and the forward link packet data channel is not configured for soft handover.

12. The CDMA base station of claim 7 wherein the forward link packet data channel is ⅓

rate forward error correction (FEC) encoded.

13. A method comprising:

receiving, by a code division multiple access (CDMA) subscriber unit, a forward link CDMA code channel and a forward link packet data channel;

wherein the forward link packet data channel has a varying number of CDMA codes; and

transmitting, by the CDMA subscriber unit, a reverse link CDMA code channel and a reverse link packet data channel;

wherein the reverse link packet data channel has a varying number of CDMA codes.

14. The method of claim 13 wherein the forward link CDMA code channel carries voice data.

15. The method of claim 13 wherein the reverse link CDMA code channel carries voice data.

16. The method of claim 13 wherein CDMA code channels have an orthogonal code and a pseudo noise code.

17. The method of claim 13 wherein the forward link and reverse link CDMA code channels are configured for soft handover and the forward link packet data channel is not configured for soft handover.

18. The method of claim 13 wherein the forward link packet data channel is ⅓

rate forward error correction (FEC) encoded.