Patent ID: 7672286
Filing Date: 2010-03-02
Classification: H04J,H04L

Abstract:
1. A method of asymmetrically receiving data from a particular data source station at a data receiver, comprising: a) concurrently receiving a plurality of different data packets transmitted concurrently from the source via a corresponding plurality of different forward link channels that each modulate a different carrier frequency spectrum; b) determining acknowledgment status for each data packet as ACK if it was received correctly, or as NAK if it was received incorrectly; c) multiplexing acknowledgment symbols reflecting the different data packets onto a reverse link (RL) acknowledgment channel after imposing a corresponding different multi-bit orthogonal code cover on the acknowledgment symbols, wherein the multi-bit orthogonal code covering results in a sequence having a same duration, occupying a same transmit time interval (TTI), and being subsequently modulated by a same Walsh code as standardized for a previous version of a CDMA communication system; and d) transmitting the RL acknowledgment channel to the data source station by modulating a single carrier frequency spectrum.