US20100027451A1
Active / In Force
US
⏱️ 2.8 years remaining
Reverse link power control for an ofdma system
Assignee: Qualcomm Inc
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Filing: 2009-07-29
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Granted: —
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Expires: 2029-07-29
Abstract
Abstract Techniques for performing power control of multiple channels sent using multiple radio technologies are described. The transmit power of a reference channel, sent using a first radio technology (e.g., CDMA), is adjusted to achieve a target level of performance (e.g., a target erasure rate) for the reference channel. The transmit power of a data channel, sent using a second radio technology (e.g., OFDMA), is adjusted based on the transmit power of the reference channel. In one power control scheme, a reference power spectral density (PSD) level is determined based on the transmit power of the reference channel. A transmit PSD delta for the data channel is adjusted based on interference estimates. A transmit PSD of the data channel is determined based on the reference PSD level and the transmit PSD delta. The transmit power of the data channel is then set to achieve the transmit PSD for the data channel.
Inventors
- 👤 Aamod D. Khandekar
- 👤 Alexei Y. Gorokhov
- 👤 Arak Sutivong
- 👤 Murat Mese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/14; H04W52/146; H04W52/18; H04W52/24; H04W52/241; H04L; H04L1/00; H04L1/12; H04L1/16; H04L1/18; H04W52/16; H04W52/20; H04W52/243; H04W52/247; H04W52/248; H04W52/30; H04W52/32; H04W52/325; H04W52/38; H04W52/48; H04W52/54; H04W88/00; H04W88/02; H04W88/06; H04B; H04B17/00; H04B17/30; H04B17/391; H04W52/08; H04W52/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
62 words
1 . An apparatus comprising: at least one processor configured to determine a reference transmit power level, to detect for errors in signaling sent on a control channel, and to adjust transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel; and a memory coupled to the at least one processor.
Claim 2
Dependent Claim
62 words
1 . An apparatus comprising: at least one processor configured to determine a reference transmit power level, to detect for errors in signaling sent on a control channel, and to adjust transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel; and a memory coupled to the at least one processor.
Claim 3
Dependent Claim
36 words
2 . The apparatus of claim 1 , wherein the at least one processor is configured to implicitly detect for the errors in the signaling sent on the control channel without receiving feedback indicating the errors.
Claim 4
Dependent Claim
70 words
3 . The apparatus of claim 1 , wherein the signaling comprises acknowledgements (ACKs), and wherein the at least one processor is configured to receive data packets on a data channel, to send ACKs on the control channel for the data packets received on the data channel, and to detect for errors in the ACKs sent on the control channel based on the data packets received on the data channel.
Claim 5
Dependent Claim
43 words
4 . The apparatus of claim 3 , wherein the at least one processor is configured to declare an ACK error if an ACK is sent on the control channel and a retransmission of a data packet is received on the data channel.
Claim 6
Dependent Claim
44 words
5 . A method comprising: determining a reference transmit power level; detecting for errors in signaling sent on a control channel; and adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
Claim 7
Dependent Claim
44 words
5 . A method comprising: determining a reference transmit power level; detecting for errors in signaling sent on a control channel; and adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
Claim 8
Dependent Claim
66 words
6 . The method of claim 5 , wherein the detecting for errors in the signaling sent on the control channel comprises receiving data packets on a data channel, sending ACKs on the control channel for the data packets received on the data channel, and detecting for errors in the ACKs sent on the control channel based on the data packets received on the data channel.
Claim 9
Dependent Claim
50 words
7 . An apparatus comprising: means for determining a reference transmit power level; means for detecting for errors in signaling sent on a control channel; and means for adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
Claim 10
Dependent Claim
50 words
7 . An apparatus comprising: means for determining a reference transmit power level; means for detecting for errors in signaling sent on a control channel; and means for adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
Claim 11
Dependent Claim
74 words
8 . The apparatus of claim 7 , wherein the means for detecting for errors in the signaling sent on the control channel comprises means for receiving data packets on a data channel, means for sending ACKs on the control channel for the data packets received on the data channel, and means for detecting for errors in the ACKs sent on the control channel based on the data packets received on the data channel.
Claim 12
Dependent Claim
66 words
9 . A processor readable media including instructions thereon that may be utilized by one or more processors, the instructions comprising: instructions for determining a reference transmit power level; instructions for detecting for errors in signaling sent on a control channel; and instructions for adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
Claim 13
Dependent Claim
66 words
9 . A processor readable media including instructions thereon that may be utilized by one or more processors, the instructions comprising: instructions for determining a reference transmit power level; instructions for detecting for errors in signaling sent on a control channel; and instructions for adjusting transmit power of the control channel based on the reference transmit power level and the detected errors on the control channel.
References Cited (Backward Citations)
US6470055B1
Cited
US7483492B2
Cited
US6850506B1
Cited
US20050053031A1
Cited
US7035326B1
Cited
US20020163974A1
Cited
US6983166B2
Cited
US20040193971A1
Cited
US7218948B2
Cited
US20040179494A1
Cited
US20060019694A1
Cited
US7197692B2
Cited
US20100034315A1
Cited
US7965789B2
Cited
US7664522B2
Cited
US20080013611A1
Cited
US7733979B2
Cited
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