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Methods and apparatus are presented for improving the feedback of channel information to a serving base station, which allows a reduction in the reverse link load while allowing the base station to improve the forward link data throughput. Over a channel quality indicator channel, three subchannels

Methods and apparatus are presented for improving the feedback of channel information to a serving base station, which allows a reduction in the reverse link load while allowing the base station to improve the forward link data throughput. Over a channel quality indicator channel, three subchannels are generated; the re-synch subchannel, the differential feedback subchannel, and the transition indicator subchannel. The information carried on each subchannel can be used separately or together by a base station to selectively update internal registers storing channel conditions. The channel conditions are used to determine transmission formats, power levels, and data rates of forward link transmissions.

대표청구항 ▼

What is claimed is: 1. An apparatus for transmitting channel quality values over a feedback channel to a base station, comprising: a re-synch subchannel generation system for generating a full channel quality value; and a differential feedback subchannel generation system for generating a plurality

What is claimed is: 1. An apparatus for transmitting channel quality values over a feedback channel to a base station, comprising: a re-synch subchannel generation system for generating a full channel quality value; and a differential feedback subchannel generation system for generating a plurality of incremental values, wherein the plurality of incremental values are multiplexed with the full channel quality values; and a transmitter for transmitting the full channel quality value and the plurality or incremental values over multiple slots in a frame, wherein the plurality of incremental values are discarded by the base station. 2. The apparatus of claim 1, wherein the plurality of incremental values are code-multiplexed with the full channel quality value. 3. The apparatus of claim 1, wherein the plurality of incremental values are time-multiplexed with the full channel quality value. 4. The apparatus of claim 1, further comprising a transition indicator subchannel generation system for generating a flag that indicates the start of a transitional period. 5. The apparatus of claim 4, wherein a Walsh spreading element is used in the re-synch subchannel generation system and not used in the differential feedback subchannel. 6. The apparatus of claim 4, wherein a common Walsh function is used in the differential feedback subchannel generation system and the transition indicator subchannel generation system. 7. The apparatus of claim 6, wherein the common Walsh function is used to indicate a base station index. 8. A method for transmitting channel information from a remote station to a base station, comprising: generating a full channel quality value; and generating a plurality of incremental channel quality values, wherein the incremental channel quality values are multiplexed with the full channel quality value; and transmitting the full channel quality value and the plurality of incremental values over multiple slots in a frame, wherein the plurality of incremental values are discarded birdie base station. 9. The method of claim 8, wherein the incremental channel quality values are generated over each slot in the frame. 10. The method of claim 9, further comprising: generating a transition indicator, wherein the transition indicator is multiplexed with the incremental channel quality values and the full channel quality value and is used to indicate a transition period for the base station. 11. Apparatus for transmitting channel information from a remote station to a base station, comprising: means for generating a full channel quality value; means for generating a plurality of incremental channel quality values, wherein the incremental channel quality values are multiplexed with the full channel quality value; and means for transmitting the full channel quality value and the plurality of incremental values over multiple slots in a frame, wherein the plurality of incremental values are discarded by the base station. 12. The apparatus of claim 11, further comprising: means for generating a transition indicator, wherein the transition indicator is multiplexed with the incremental channel quality values and the full channel quality value and is used to indicate a transition period for the base station. 13. A method for transmitting channel information from a remote station to a base station, comprising: generating a full channel quality value and determining said full channel quality value exceeds a fixed maximum value represented by a finite number of data bits; generating an incremental channel quality value and fixing said incremental value as an up-increment value, wherein said fixing is in response to said determining; multiplexing the incremental channel quality value with the full channel quality value to form channel information for transmission from said remote station to said base station. 14. A method for transmitting channel information from a remote station to a base station, comprising: generating a full channel quality value and determining said full channel quality value is below a fixed minimum value represented by a finite number of data bits; generating an incremental channel quality value and fixing said incremental value as a down-increment value, wherein said fixing is in response to said determining; multiplexing the incremental channel quality value with the full channel quality value to form channel information for transmission from said remote station to said base station. 15. An apparatus for transmitting channel information from a remote station to a base station, comprising: means for generating a full channel quality value and determining said full channel quality value exceeds a fixed maximum value represented by a finite number of data bits; means for generating an incremental channel quality value and fixing said incremental value as an up-increment value, wherein said fixing is in response to said determining; means for multiplexing the incremental channel quality value with the full channel quality value to form channel information for transmission from said remote station to said base station. 16. An apparatus for transmitting channel information from a remote station to a base station, comprising: means for generating a full channel quality value and determining said full channel quality value is below a fixed minimum value represented by a finite number of data bits; means for generating an incremental channel quality value and fixing said incremental value as a down-increment value, wherein said fixing is in response to said determining; means for multiplexing the incremental channel quality value with the full channel quality value to form channel information for transmission from said remote station to said base station.