IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0877174
(2004-06-25)
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등록번호 |
US-7680174
(2010-04-21)
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발명자
/ 주소 |
- Tiedemann, Jr., Edward G.
- Saints, Keith W.
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
50 |
초록
▼
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
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.
대표청구항
▼
What is claimed is: 1. A method implementable in an apparatus, said method comprising: measuring a received amplitude value of at least one bit of a first signal of a forward link, wherein a transmit power level of the at least one bit is independent of a bit rate of a second signal of the forward
What is claimed is: 1. A method implementable in an apparatus, said method comprising: measuring a received amplitude value of at least one bit of a first signal of a forward link, wherein a transmit power level of the at least one bit is independent of a bit rate of a second signal of the forward link; comparing said received amplitude value against a target energy level; and generating a forward link power control value based on said comparing; wherein said generating is repeated 800 times per second. 2. The method of claim 1 further comprising transmitting said forward link power control value. 3. The method of claim 1, wherein said forward link power control value is a power control bit. 4. The method of claim 1 further comprising adjusting said target energy level. 5. The method of claim 4 wherein said adjusting is repeated 20 times per second. 6. The method of claim 4 wherein said adjusting occurs once for each of a plurality of received data frames. 7. The method of claim 4 wherein said adjusting comprises increasing the target energy level by an up-step amount when a data frame is received without error and decreasing the target energy level by a down-step amount when a data frame is received with at least one error, wherein the up-step amount is greater than the down-step amount. 8. The method of claim 1 further comprising adjusting a phase and amplitude of the at least one hit of the firs signal in accordance with a pilot phase and pilot amplitude of a received pilot signal to produce an adjusted first signal. 9. The method of claim 8 further comprising filtering the adjusted first signal. 10. The method of claim 1 further comprising filtering the received amplitude value. 11. The method of claim 1 further comprising combining an absolute value of the received amplitude value with at least one absolute value of an additional received amplitude value based on an additional forward link signal. 12. The method of claim 1 further comprising combining the received amplitude value with at least one additional received amplitude value, wherein the at least one additional received amplitude value corresponds to at least one additional signal bit known to be equal to said at least one signal bit of the first signal. 13. An apparatus, comprising: means for measuring a received amplitude value of at least one bit of a first signal of a forward link, wherein a transmit power level of the at least one bit is independent of a bit rate of a second signal of the forward link; means for comparing said received amplitude value against a target energy level; and means for generating a forward link power control value based on said comparing, wherein said means for generating is repeated 800 times per second. 14. The apparatus of claim 13 further comprising means for transmitting said forward link power control value. 15. The apparatus of claim 13, wherein said forward link power control value is a power control bit. 16. The apparatus of claim 13 further comprising means for adjusting said target energy level. 17. The apparatus of claim 16 wherein said adjusting is repeated 20 times per second. 18. The apparatus of claim 16 wherein said adjusting occurs once for each of a plurality of received data frames. 19. The apparatus of claim 16 wherein said adjusting comprises increasing the target energy level by an up-step amount when a data frame is received without error and decreasing the target energy level by a down-step amount when a data frame is received with at least one error, wherein the up-step amount is greater than the down-step amount. 20. The apparatus of claim 13 further comprising means for adjusting a phase and amplitude of the at least one bit of the first signal in accordance with a pilot phase and pilot amplitude of a received pilot signal to produce an adjusted first signal. 21. The apparatus of claim 20 further comprising means for filtering the adjusted first signal. 22. The apparatus of claim 13 further comprising means for filtering the received amplitude value. 23. The apparatus of claim 13 further comprising means for combining an absolute value of the received amplitude value with at least one absolute value of an additional received amplitude value based on an additional forward link signal. 24. The apparatus of claim 13 further comprising means for combining the received amplitude value with at least one additional received amplitude value, wherein the at least one additional received amplitude value corresponds to at least one additional signal bit known to be equal to said at least one signal bit of the first signal. 25. A remote station, comprising: a receiver for receiving at least a first and second signal of a forward link, wherein a transmit power level of the first signal is independent of a bit rate of the second signal; a controller for measuring a received amplitude value of the first signal, comparing said received amplitude value against a target energy level, and generating a forward link power control value based on said comparing, wherein said generating is repeated 800 times per second. 26. An apparatus comprising: a controller for measuring a received amplitude value of a first signal of a forward link, comparing said received amplitude value against a target energy level, and generating a forward link power control value based on said comparing, wherein said generating is repeated 800 times per second. 27. The apparatus of claim 26, further comprising a demultiplexor for demultiplexing the first signal received over the forward link. 28. The apparatus of claim 26, wherein said controller comprises a threshold adjustment module for adjusting die target energy level. 29. The apparatus of claim 28, wherein said threshold adjustment module adjusts the target energy level after each of a plurality of received data frame periods. 30. The apparatus of claim 28, wherein said threshold adjustment module receives frame quality information indicative of whether a frame error has occurred, and wherein said threshold adjustment module is configured to increase the target energy level by an up-step amount when a frame error has not occurred and to decrease the target energy level by a down-step amount when a frame error has occurred, wherein the up-step amount is greater than the down-step amount. 31. The apparatus of claim 26, further comprising a dot product module for adjusting a phase and amplitude of the first signal in accordance with a pilot phase and pilot amplitude of a received pilot signal to produce an adjusted first signal. 32. The apparatus of claim 31, further comprising a filter for filtering the adjusted first signal. 33. The apparatus of claim 26, further comprising a filter for filtering the received amplitude value. 34. The apparatus of claim 26, wherein said controller comprises a non-identical bit accumulator for combining an absolute value of the received amplitude value with at least one absolute value of an additional received amplitude value based on an additional forward link. 35. The apparatus of claim 26, wherein said controller comprises an identical bit accumulator for combining the received amplitude value with at least one additional received amplitude value, wherein the at least one additional received amplitude value corresponds to at least one additional bit known to be equal to the first signal. 36. The apparatus of claim 26, further comprising at least one correlator, wherein each of said at least one correlator is assigned to a different signal path and performs pseudonoise (PN) despreading for a signal received through the corresponding assigned signal path. 37. The apparatus of claim 26, wherein the first signal is a multiplexed control signal.
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