Transmission of signaling data in an adjustable rate wireless communication system

Abstract

A novel and improved method and apparatus for generating a constant data rate channel supporting signaling data transmission in an adjustable rate wireless communication system is described. In accordance with one aspect of the invention the rate at which the channel operates may be adjusted based on the particular use and environmental conditions such that the appropriate data rate up to a maximum capability can be achieved. User data is then placed into frames based on the selected rate. When available, signaling data is added into each frames in a predetermined amount. The resulting frame is encoded, repeated and punctured based on the selected rate and whether signaling data has been introduced, and transmitted via RF signals to the receive system. Upon reception, the frame is processed in accordance with having only user data and with having signaling data. That is, the frame is processed both as if it had signaling data and as if no signaling data were present. Once the frame is processed, the particular processing that is more likely to be correct is determined via error checking. If the signaling data processed frame is more likely to have be correct, the signaling data is separated from the user data and each processed accordingly. If the non-signaling data processing is determined to be more likely to be correct, the frame is processed as if it were entirely comprised of user data.

Description

technical field [0001] The present invention relates to wireless communications. In particular, the present invention relates to a novel and improved method for supporting signaling data transmission in an adjustable data rate wireless communication system. Background technique [0002] figure 1 is a greatly simplified diagram of a cellular telephone system constructed using digital signal processing techniques. For telephone calls or other communications, digitally modulated radio frequency (RF) signals are used to establish wireless interfaces between user equipment 18 and one or more base stations 12, each wireless interface comprising a forward link from base station 12 to user equipment 18 transmission and reverse link transmission from user equipment 18 to base station 12 . Typically, one or more channels are established in the forward and reverse link transmissions, which include a forward traffic channel and a reverse traffic channel, through which user data such ...

AI Technical Summary

Problems solved by technology

Therefore, in order to meet these new requirements, the present invention is directed to providing wireless telecommunication capabilities at various data rates, but without reducing user data rates in order to send signaling data

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