Method and apparatus for using non-symmetric speech coders to produce non-symmetric links in a wireless communication system

Abstract

A method and apparatus for balancing the forward link capacity of a wireless communication system with the reverse link capacity of the system is presented. Speech coders with selectable modes are implemented in both links so that a forward link speech coder will not be operating with a mode set that is identical to the mode set used by a reverse link speech coder. Since the reverse link has a higher user capacity than a forward link, the reverse link speech coder can operate with a higher average data rate. Hence, the mode set used by the reverse link speech coder can be implemented without low average data rate modes. Elimination of modes from the mode set reduces complexity of the speech coder.

We claim:  
     
         1 . An apparatus for balancing the capacity of a forward link in a wireless communication system with the capacity of a reverse link in the wireless communication system, comprising: 
 means for operating a first speech coder with a first set of modes on the forward link, wherein at least one mode in the first set of modes is associated with a low average data rate; and    means for operating a second speech coder in a second set of modes on the reverse link, wherein each mode in the second set of modes is associated with a high average data rate.