Method and apparatus for high rate packet data transmission
First Claim
1. A method in a wireless communication system, comprising:
- measuring channel quality of a link in the communication system;
transmitting a quality indicator by use of an absolute reference and a relative reference, wherein the quality indicator maps to a transmission data rate; and
receiving data as a function of the quality indicator,wherein the relative reference indicates whether the transmission data rate for an upcoming time slot is higher or lower than the transmission data rate of a previous time slot.
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Abstract
In a data communication system capable of variable rate transmission, high rate packet data transmission improves utilization of the forward link and decreases the transmission delay. Data transmission on the forward link is time multiplexed and the base station transmits at the highest data rate supported by the forward link at each time slot to one mobile station. The data rate is determined by the largest C/I measurement of the forward link signals as measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packets.
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Citations
30 Claims
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1. A method in a wireless communication system, comprising:
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measuring channel quality of a link in the communication system; transmitting a quality indicator by use of an absolute reference and a relative reference, wherein the quality indicator maps to a transmission data rate; and receiving data as a function of the quality indicator, wherein the relative reference indicates whether the transmission data rate for an upcoming time slot is higher or lower than the transmission data rate of a previous time slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for a communication system, comprising:
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means for measuring channel quality of a link in the communication system; means for transmitting a quality indicator by use of an absolute reference and a relative reference, wherein the quality indicator maps to a transmission data rate; and means for receiving data as a function of the quality indicator, wherein the relative reference indicates whether the transmission data rate for an upcoming time slot is higher or lower than the transmission data rate of a previous time slot. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification