System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system

摘要

A subscriber access unit includes a transceiver for providing wireless communication of digital signals. The digital signals are communicated to a base station using at least one radio frequency (RF) channel via Code Division Multiple Access (CDMA) modulated radio signals defined by orthogonal codes. Orthogonal subchannels are made available by the base station within each CDMA RF channel. A bandwidth manager is connected to the transceiver, and when the transceiver is actively sending data, at least one orthogonal subchannel is allocated by the base station on an as-needed basis. The number of orthogonal subchannels being allocated changes during a given session. The transceiver, when powered on but not actively sending data, provides an idling mode connection on a reverse link. The idling mode connection is based on an orthogonal subchannel shared with at least one other subscriber access unit, but utilizes different time slots of the shared orthogonal subchannel.

主权项

1. A subscriber unit comprising:
a transceiver configured to receive time interval assignment information; wherein the time interval assignment information indicates time intervals for reverse link transmission; wherein each time interval includes at least one time slot; wherein the transceiver is further configured to transmit over a plurality of code channels in all time intervals when data is available to transmit; and wherein the transceiver is further configured to transmit a code channel, having a burst pattern over the reverse link, in at least one time interval and not transmit any code channels in other time intervals when no data is available to transmit to maintain a reverse link so that synchronization of subchannels does not need to be reestablished each time forward link channels are granted back.