Method and apparatus for a spectrally compliant cellular communication system

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.

What is claimed is: 
     
         1 . A code division multiple access (CDMA) subscriber unit comprising:
 circuitry configured to receive a forward link CDMA code channel on a first carrier frequency and a forward link packet data channel on a second carrier frequency, wherein the forward link packet data channel has a varying number of CDMA codes; and   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 on a first carrier frequency and a forward link packet data channel on a second carrier frequency, 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; and   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 on a first carrier frequency and a forward link packet data channel on a second carrier frequency, 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.