Operation of a forward link acknowledgement channel for the reverse link data
First Claim
1. An acknowledgement method in a wireless communication system, comprising:
- receiving a reverse link traffic channel data frame;
transmitting an acknowledgement (ACK) signal if quality of the received data frame is indicated as being good; and
transmitting a negative acknowledgement (NAK) signal only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame.
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Accused Products
Abstract
An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.
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Citations
45 Claims
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1. An acknowledgement method in a wireless communication system, comprising:
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receiving a reverse link traffic channel data frame;
transmitting an acknowledgement (ACK) signal if quality of the received data frame is indicated as being good; and
transmitting a negative acknowledgement (NAK) signal only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method in a wireless communication system, comprising:
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transmitting a reverse link traffic channel data frame;
receiving an acknowledgement (ACK) signal if quality of the transmitted data frame is indicated as being good; and
receiving a negative acknowledgement (NAK) signal only if the transmitted data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. - View Dependent Claims (10)
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11. An acknowledgement method in a wireless communication system, comprising:
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receiving a reverse supplemental channel (R-SCH) data frame;
transmitting a negative acknowledgement (NAK) signal if quality of the received R-SCH data frame is indicated as being bad; and
enabling a remote terminal to recognize an absence of acknowledgement as an acknowledgement (ACK) signal to indicate that the quality of the received R-SCH frame is good. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A wireless communication system operating an acknowledgement channel, comprising:
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a base device configured to receive a reverse supplemental channel (R-SCH) frame, the base device operating to transmit an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good; and
a remote device configured to transmit the R-SCGH frame to the base device, the remote device operating to receive the ACK signal, and to recognize an absence of acknowledgement as a negative acknowledgement (NAK) signal to indicate that the quality of the received R-SCH frame is bad. - View Dependent Claims (20, 21, 22, 23)
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24. A wireless communication system having a forward link acknowledgement channel, comprising:
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a base device configured to receive a reverse supplemental channel (R-SCH) frame, the base device operating to transmit a negative acknowledgement (NAK) signal if quality of the received R-SCH frame is indicated as being bad; and
a remote device configured to transmit the R-SCH frame to the base device, the remote device operating to receive the NAK signal, and to recognize an absence of acknowledgement as an acknowledgement (ACK) signal to indicate that the quality of the received R-SCH frame is good. - View Dependent Claims (25, 26, 27)
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28. A base station for a wireless communication system, the base station comprising:
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an RF front end configured to receive and appropriately amplify, filter, and process a reverse supplemental channel (R-SCH) frame from a remote terminal or remote terminals; and
a digital signal processor (DSP) adapted to demodulate and further process the received R-SCH frame, the DSP configured to direct the RF front end to transmit an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good, the DSP configured to direct the RF front end to transmit a negative acknowledgement (NAK) signal only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame - View Dependent Claims (29, 30, 31)
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32. A base station for a wireless communication system, the base station comprising:
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an RF front end configured to receive and appropriately amplify, filter, and process a reverse supplemental channel (R-SCH) frame from a remote terminal or remote terminals; and
a digital signal processor (DSP) adapted to demodulate and further process the received R-SCH frame, the DSP configured to direct the RF front end to transmit a negative acknowledgement (NAK) signal if quality of the received R-SCH frame is indicated as being bad, the DSP configured to enable the remote terminal to recognize an absence of an acknowledgement (ACK) signal as indicating acknowledgement of receipt of the R-SCH frame at the base station. - View Dependent Claims (33)
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34. A wireless remote terminal for a communications system, the remote terminal comprising:
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an RF front end configured to transmit a reverse supplemental channel (R-SCH) frame to a base station, the RF front end configured to receive and appropriately amplify, filter, and process an acknowledgement (ACK) signal from the base station to indicate that quality of the R-SCH frame received at the base station is good, and to recognize an absence of acknowledgement as a negative acknowledgement (NAK) signal to indicate that the quality of the R-SCH frame received at the base station is bad; and
a digital signal processor (DSP) adapted to demodulate and further process the received ACK signal.
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35. A wireless remote terminal for a communications system, the remote terminal comprising:
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an RF front end configured to transmit a reverse supplemental channel (R-SCH) frame to a best base station, the RF front end configured to receive and appropriately amplify, filter, and process a negative acknowledgement (NAK) signal from the base station to indicate that quality of the R-SCH frame received at the base station is bad, and to recognize an absence of acknowledgement as an acknowledgement (ACK) signal to indicate that the quality of the R-SCH frame received at the base station is good; and
a digital signal processor (DSP) adapted to demodulate and further process the received NAK signal.
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36. A forward link acknowledgement channel driver for a wireless communication, the driver comprising:
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a block encoder configured to receive an ACK/NAK message having at least one bit, the block encoder operating to encode the ACK/NAK message with a generator matrix to produce a codeword;
a first mapper configured to map the codeword into a first binary signal; and
a first mixer configured to mix the first binary signal with a first orthogonal spreading code. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification