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In a communication system where a continuous reverse channel transmission is utilized by redundant transmission of Walsh codes, a current transmission rate is modulated onto Walsh code polarity. In particular, a remote unit operating at a particular transmission rate utilizing a continuous reverse c

In a communication system where a continuous reverse channel transmission is utilized by redundant transmission of Walsh codes, a current transmission rate is modulated onto Walsh code polarity. In particular, a remote unit operating at a particular transmission rate utilizing a continuous reverse channel transmission modulates the transmission rate by setting the polarity of each Walsh code depending upon the current or future data traffic channel rate. In communication systems where a Reference Coherent (RC) type transmission is utilized, the particular transmission rate is modulated onto the reference symbols (501-517) by setting the reference symbols (501-517) equal to a binary "1" or "0".

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[ What is claimed is:] [1.] A method for transmitting a transmission rate in a multi-rate communication system where a continuous transmission scheme is utilized for sub-rate transmission, the transmission scheme utilizing frames for transmitting data where each of the frames is transmitted at a par

[ What is claimed is:] [1.] A method for transmitting a transmission rate in a multi-rate communication system where a continuous transmission scheme is utilized for sub-rate transmission, the transmission scheme utilizing frames for transmitting data where each of the frames is transmitted at a particular transmission rate, the method comprising the steps of:receiving traffic channel data output by a voice encoder;orthogonally encoding the traffic channel data by M-ary modulating the traffic channel data with a plurality of spreading codes;determining a transmission rate for a plurality of frames to be transmitted between a first communication unit and a second communication unit; andtransmitting the plurality of frames from the first communication unit to the second communication unit along with a low-rate control channel, wherein the low-rate control channel is modulated onto a normally transmitted channel and is utilized to indicate the transmission rate for the plurality of frames;wherein the step of transmitting the low-rate control channel from the first communication unit to the second communication unit comprises transmitting the low-rate control channel by modulating the transmission rate onto the polarity of a plurality of spreading codes used to modulate the traffic channel data output by the voice encoder, or by modulating the reference symbols utilized by a receiver to help in coherent demodulation of the orthogonally encoded traffic channel data.