Transmit gating in a wireless communication system
First Claim
1. A method of transmitting a reverse link signal, the method comprising:
- generating a first frame of data having a first data rate of a plurality of possible data rates;
selecting a discontinuous transmit mode based on the first data rate; and
transmitting the reverse link signal in the discontinuous transmit mode, wherein the reverse link signal comprises a pilot signal and a data signal, and wherein the data signal comprises the frame of data.
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Abstract
A method and system for communicating a frame of information according to both a continuous transmit format and a discontinuous transmit format. The present invention contemplates transmitting one or more data rates in either a continuous transmit mode (814) or a discontinuous transmit mode (812). The present invention contemplates continuous transmission only for certain data rates, and selection between continuous and discontinuous transmission for other data rates (810). Frames transmitted in the discontinuous transmit mode may be transmitted at a higher transmit power than in the continuous transmit mode (820). In one embodiment, the information is transmitted at a fifty-percent duty cycle during the second half of the frame when in the discontinuous transmit mode (808). During periods of non-transmission, an alternative system may be searched for as a possible candidate for hard handoff (816).
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Citations
26 Claims
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1. A method of transmitting a reverse link signal, the method comprising:
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generating a first frame of data having a first data rate of a plurality of possible data rates;
selecting a discontinuous transmit mode based on the first data rate; and
transmitting the reverse link signal in the discontinuous transmit mode, wherein the reverse link signal comprises a pilot signal and a data signal, and wherein the data signal comprises the frame of data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
generating a second frame of data having a second data rate of the plurality of possible data rates; and
selecting a continuous transmit mode based on the second data rate.
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4. The method of claim 1 wherein the first data rate is eighth-rate.
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5. The method of claim 1 wherein the transmitting comprises transmitting the reverse link signal at a 50% duty cycle.
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6. The method of claim 5 wherein the transmitting comprises transmitting the reverse link signal during a contiguous period representing half of a frame period.
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7. The method of claim 5 wherein the transmitting comprises transmitting the reverse link signal during an earlier half of a 20 millisecond frame period.
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8. The method of claim 5 wherein the transmitting comprises transmitting the reverse link signal during a latter half of a 20 millisecond frame period.
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9. The method of claim 1 wherein the reverse link signal further comprises power control bits, and wherein the transmitting the reverse link signal in the discontinuous transmit mode results in a reduction in the update rate of the power control bits.
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10. The method of claim 1 further comprising determining whether to transmit discontinuously, wherein the selecting is further based on the determining.
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11. The method of claim 10 wherein the determining is based on a user-defined preference.
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12. The method of claim 10 wherein the determining is based on a transmit power of a mobile station transmitter.
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13. The method of claim 10 wherein the determining is based on a discontinuous mode message received from a base station.
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14. A reverse link transmission apparatus comprising:
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variable rate data source configured to generate a first frame of data having a first data rate of a plurality of possible data rates;
modulator configured to modulate a pilot signal and the first frame of data to provide a reverse link signal;
transmitter configured to transmit the reverse link signal, wherein the reverse link signal comprises a pilot signal and a data signal, and wherein the data signal comprises the frame of data; and
control processor configured to select a discontinuous transmit mode based on the first data rate and to control gating of the transmitter based on the selecting a discontinuous transmit mode. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A reverse link transmission apparatus comprising:
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means for generating a first frame of data having a first data rate of a plurality of possible data rates;
means for selecting a discontinuous transmit mode based on the first data rate; and
means for transmitting a reverse link signal in the discontinuous transmit mode, wherein the reverse link signal comprises a pilot signal and a data signal, and wherein the data signal comprises the frame of data.
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Specification