METHOD AND APPARATUS FOR FORWARD LINK POWER CONTROL
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Abstract
A forward link power control mechanism measures the reverse link power control bits which are transmitted on the forward traffic channel. At the remote station, the reverse link power control bits from multiples base stations or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station generates a set of forward link power control bit in accordance with the measurements and transmits these bits to all base stations in communication with the remote station. Each base station adjusts its gain of the forward traffic channel in accordance to its measurement of the forward link power control bit.
25 Citations
70 Claims
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1-39. -39. (canceled)
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40. A method of controlling transmit power of a forward link signal, comprising:
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measuring an amplitude value of at least one control bit that was transmitted in a forward link signal also comprising at least one data bit, wherein a transmit power level of the at least one control bit is independent of a rate associated with the transmission of the at least one data bit; comparing the measured amplitude value against a target energy level; and generating a forward link power control value based on the comparison. - View Dependent Claims (41, 42, 43, 45, 46, 47, 48, 49, 50)
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51. An apparatus for controlling transmit power, comprising:
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means for measuring an amplitude value of at least one control bit that was transmitted in a forward link signal also comprising at least one data bit, wherein a transmit power level of the at least one control bit is independent of a rate associated with the transmission of the at least one data bit; means for comparing the measured amplitude value against a target energy level; and means for generating a forward link power control value based on the comparison. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A remote station, comprising:
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a receiver configured to receive a forward link signal comprising at least one control bit and at least one data bit; and a power control processor configured to; measure an amplitude value of the at least one control bit, wherein a transmit power level of the at least one control bit is independent of a rate associated with the transmission of the at least one data bit; compare the measured amplitude value against a target energy level; and generate a forward link power control value based on the comparison. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70)
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Specification