Patent US7965789B2 successfully refreshed from Google Patents.
US7965789B2
Expired / Lapsed
US
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Reverse link power control for an OFDMA system
Assignee: Qualcomm Inc
•
Filing: 2006-08-21
•
Granted: 2011-06-21
•
Expires: 2026-08-21
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
2026-10-24 23:49
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/24; H04W52/241; H04W52/06; H04W52/14; H04W52/146; H04L; H04L1/00; H04L1/12; H04L1/16; H04L1/18; H04W52/08; H04W52/12; 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
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
95 words
An apparatus comprising: at least one processor to transmit a first signal via a reference channel using a first radio technology, to transmit a second signal via a second channel using a second radio technology, to adjust a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel, and to adjust a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel; and a memory coupled to the at least one processor.
Claim 2
Independent Claim
95 words
An apparatus comprising: at least one processor to transmit a first signal via a reference channel using a first radio technology, to transmit a second signal via a second channel using a second radio technology, to adjust a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel, and to adjust a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel; and a memory coupled to the at least one processor.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 , wherein the first radio technology comprises Code Division Multiple Access (CDMA) and the second radio technology comprises Orthogonal Frequency Division Multiple Access (OFDMA).
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 , wherein the reference channel carries signaling and the second channel carries traffic data.
Claim 5
Dependent Claim
41 words
The apparatus of claim 1 , the at least one processor to receive power control (PC) commands for the reference channel and to adjust the transmit power of the reference channel based, at least in part, on the received PC commands.
Claim 6
Dependent Claim
27 words
The apparatus of claim 4 , wherein the PC commands are generated, at least in part, to achieve a target received signal quality for the reference channel.
Claim 7
Dependent Claim
37 words
The apparatus of claim 1 , wherein the target level of performance for the reference channel is based, at least in part, on a target erasure rate for one or more codewords sent on the reference channel.
Claim 8
Dependent Claim
47 words
The apparatus of claim 1 , the at least one processor to receive erasure indications for one or more codewords sent on the reference channel and to adjust the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 9
Dependent Claim
63 words
The apparatus of claim 1 , the at least one processor to increase the transmit power of the reference channel by an up step in response to a codeword sent on the reference channel being detected as an erasure, and to decrease the transmit power of the reference channel by a down step in response to the codeword sent being detected as non-erased.
Claim 10
Dependent Claim
28 words
The apparatus of claim 8 , wherein the up and down steps are selected based, at least in part, on a target erasure rate for the reference channel.
Claim 11
Dependent Claim
49 words
The apparatus of claim 1 , the at least one processor to adjust a power spectral density (PSD) delta based, at least in part, on one or more interference estimates and to set the transmit power of the second channel based, at least in part, on the PSD delta.
Claim 12
Dependent Claim
81 words
The apparatus of claim 1 , the at least one processor to adjust a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates, to determine a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and the transmit PSD of the reference channel, and to set the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 13
Dependent Claim
16 words
The apparatus of claim 1 , wherein the reference channel carries channel quality indication (CQI) information.
Claim 14
Independent Claim
77 words
A method comprising: sending a first signal via a reference channel using a first radio technology; sending a second signal via a second channel using a second radio technology; adjusting a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; and adjusting a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 15
Independent Claim
77 words
A method comprising: sending a first signal via a reference channel using a first radio technology; sending a second signal via a second channel using a second radio technology; adjusting a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; and adjusting a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 16
Dependent Claim
50 words
The method of claim 13 , wherein the adjusting the transmit power of the reference channel comprises receiving one or more power control (PC) commands for the reference channel, and adjusting the transmit power of the reference channel based, at least in part, on the one or more PC commands.
Claim 17
Dependent Claim
54 words
The method of claim 13 , wherein the adjusting the transmit power of the reference channel comprises receiving one or more erasure indications for one or more codewords sent on the reference channel, and adjusting the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 18
Dependent Claim
49 words
The method of claim 13 , wherein the adjusting the transmit power of the second channel comprises adjusting a power spectral density (PSD) delta based on one or more interference estimates, and setting the transmit power of the second channel based, at least in part, on the PSD delta.
Claim 19
Independent Claim
85 words
An apparatus comprising: means for sending a first signal via a reference channel using a first radio technology; means for sending a second signal via a second channel using a second radio technology; means for adjusting a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; and means for adjusting a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 20
Independent Claim
85 words
An apparatus comprising: means for sending a first signal via a reference channel using a first radio technology; means for sending a second signal via a second channel using a second radio technology; means for adjusting a transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; and means for adjusting a transmit power of the second channel based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 21
Dependent Claim
45 words
The apparatus of claim 17 , further comprising: means for receiving one or more power control (PC) commands for the reference channel, and means for adjusting the transmit power of the reference channel based, at least in part, on the one or more PC commands.
Claim 22
Dependent Claim
49 words
The apparatus of claim 17 , further comprising: means for receiving one or more erasure indications for one or more codewords sent on the reference channel, and means for adjusting the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 23
Dependent Claim
48 words
The apparatus of claim 17 , further comprising: means for adjusting a power spectral density (PSD) delta based, at least in part, on one or more interference estimates, and means for setting the transmit power of the second channel based, at least in part, on the PSD delta.
Claim 24
Dependent Claim
107 words
An article comprising: a processor readable media having instructions stored thereon that are executable by one or more processors to initiate: adjustment of a transmit power of a reference channel, the reference channel comprising a first signal being sent using a first radio, at least in part, to achieve a target level of performance for the reference channel; and adjustment of a transmit power of a second channel, the second channel comprising a second signal being sent using a second radio technology, the transmit power of the second channel being adjusted based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 25
Dependent Claim
107 words
An article comprising: a processor readable media having instructions stored thereon that are executable by one or more processors to initiate: adjustment of a transmit power of a reference channel, the reference channel comprising a first signal being sent using a first radio, at least in part, to achieve a target level of performance for the reference channel; and adjustment of a transmit power of a second channel, the second channel comprising a second signal being sent using a second radio technology, the transmit power of the second channel being adjusted based, at least in part, on a transmit power spectral density (PSD) of the reference channel.
Claim 26
Independent Claim
167 words
An apparatus comprising: at least one processor to transmit a first signal via a reference channel using a first radio technology, to transmit a second signal via a second channel using a second radio technology, to adjust transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel, and to adjust transmit power of the second channel based, at least in part, on the transmit power of the reference channel; and a memory coupled to the at least one processor, and the at least one processor further to adjust a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates, to determine a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel, and to set the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 27
Independent Claim
167 words
An apparatus comprising: at least one processor to transmit a first signal via a reference channel using a first radio technology, to transmit a second signal via a second channel using a second radio technology, to adjust transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel, and to adjust transmit power of the second channel based, at least in part, on the transmit power of the reference channel; and a memory coupled to the at least one processor, and the at least one processor further to adjust a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates, to determine a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel, and to set the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 28
Dependent Claim
29 words
The apparatus of claim 22 , wherein the first radio technology comprises Code Division Multiple Access (CDMA) and the second radio technology comprises Orthogonal Frequency Division Multiple Access (OFDMA).
Claim 29
Dependent Claim
19 words
The apparatus of claim 22 , wherein the reference channel carries signaling and the second channel carries traffic data.
Claim 30
Dependent Claim
41 words
The apparatus of claim 22 , the at least one processor to receive power control (PC) commands for the reference channel and to adjust the transmit power of the reference channel based, at least in part, on the received PC commands.
Claim 31
Dependent Claim
27 words
The apparatus of claim 25 , wherein the PC commands are generated, at least in part, to achieve a target received signal quality for the reference channel.
Claim 32
Dependent Claim
37 words
The apparatus of claim 22 , wherein the target level of performance for the reference channel is based, at least in part, on a target erasure rate for one or more codewords sent on the reference channel.
Claim 33
Dependent Claim
47 words
The apparatus of claim 22 , the at least one processor to receive erasure indications for one or more codewords sent on the reference channel and to adjust the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 34
Dependent Claim
63 words
The apparatus of claim 22 , the at least one processor to increase the transmit power of the reference channel by an up step in response to a codeword sent on the reference channel being detected as an erasure, and to decrease the transmit power of the reference channel by a down step in response to the codeword sent being detected as non-erased.
Claim 35
Dependent Claim
28 words
The apparatus of claim 29 , wherein the up and down steps are selected based, at least in part, on a target erasure rate for the reference channel.
Claim 36
Dependent Claim
16 words
The apparatus of claim 22 , wherein the reference channel carries channel quality indication (CQI) information.
Claim 37
Independent Claim
138 words
A method comprising: sending a first signal via a reference channel using a first radio technology; sending a second signal via a second channel using a second radio technology; adjusting transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; adjusting transmit power of the second channel based, at least in part, on the transmit power of the reference channel; adjusting a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; determining a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and setting the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 38
Independent Claim
138 words
A method comprising: sending a first signal via a reference channel using a first radio technology; sending a second signal via a second channel using a second radio technology; adjusting transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; adjusting transmit power of the second channel based, at least in part, on the transmit power of the reference channel; adjusting a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; determining a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and setting the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 39
Dependent Claim
29 words
The method of claim 32 , wherein the first radio technology comprises Code Division Multiple Access (CDMA) and the second radio technology comprises Orthogonal Frequency Division Multiple Access (OFDMA).
Claim 40
Dependent Claim
49 words
The method of claim 32 , wherein adjusting the transmit power of the reference channel comprises receiving one or more power control (PC) commands for the reference channel, and adjusting the transmit power of the reference channel based, at least in part, on the one or more PC commands.
Claim 41
Dependent Claim
54 words
The method of claim 32 , wherein the adjusting the transmit power of the reference channel comprises receiving one or more erasure indications for one or more codewords sent on the reference channel, and adjusting the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 42
Dependent Claim
51 words
The method of claim 32 , wherein the adjusting the transmit power of the second channel comprises adjusting a delta based one or more interference estimates, and setting the transmit power of the second channel based, at least in part, on the transmit power of the reference channel and the delta.
Claim 43
Independent Claim
148 words
An apparatus comprising: means for sending a first signal via a reference channel using a first radio technology; means for sending a second signal via a second channel using a second radio technology; means for adjusting transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; means for adjusting transmit power of the second channel based on the transmit power of the reference channel; means for adjusting a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; means for determining a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and means for setting the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 44
Independent Claim
148 words
An apparatus comprising: means for sending a first signal via a reference channel using a first radio technology; means for sending a second signal via a second channel using a second radio technology; means for adjusting transmit power of the reference channel, at least in part, to achieve a target level of performance for the reference channel; means for adjusting transmit power of the second channel based on the transmit power of the reference channel; means for adjusting a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; means for determining a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and means for setting the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 45
Dependent Claim
29 words
The apparatus of claim 37 , wherein the first radio technology comprises Code Division Multiple Access (CDMA) and the second radio technology comprises Orthogonal Frequency Division Multiple Access (OFDMA).
Claim 46
Dependent Claim
45 words
The apparatus of claim 37 , further comprising: means for receiving one or more power control (PC) commands for the reference channel, and means for adjusting the transmit power of the reference channel based, at least in part, on the one or more PC commands.
Claim 47
Dependent Claim
49 words
The apparatus of claim 37 , further comprising: means for receiving one or more erasure indications for one or more codewords sent on the reference channel, and means for adjusting the transmit power of the reference channel based, at least in part, on the one or more erasure indications.
Claim 48
Dependent Claim
51 words
The apparatus of claim 37 , further comprising: means for adjusting a delta based, at least in part, on one or more interference estimates, and means for setting the transmit power of the second channel based, at least in part, on the transmit power of the reference channel and the delta.
Claim 49
Dependent Claim
181 words
An article comprising: a processor readable media having instructions stored thereon executable by one or more processors to initiate: adjustment of a transmit power of a reference channel, the reference channel comprising a first signal being sent using a first radio technology, the transmit power of the reference channel being adjusted, at least in part, to achieve a target level of performance for the reference channel; adjustment of a transmit power of a second channel, the second channel comprising a second signal being sent using a second radio technology, the transmit power of the second channel being adjusted based, at least in part, on the transmit power of the reference channel; adjustment of a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; determination of a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and adjustment of the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
Claim 50
Dependent Claim
181 words
An article comprising: a processor readable media having instructions stored thereon executable by one or more processors to initiate: adjustment of a transmit power of a reference channel, the reference channel comprising a first signal being sent using a first radio technology, the transmit power of the reference channel being adjusted, at least in part, to achieve a target level of performance for the reference channel; adjustment of a transmit power of a second channel, the second channel comprising a second signal being sent using a second radio technology, the transmit power of the second channel being adjusted based, at least in part, on the transmit power of the reference channel; adjustment of a transmit power spectral density (PSD) delta based, at least in part, on one or more interference estimates; determination of a transmit PSD of the second channel based, at least in part, on the transmit PSD delta and a transmit PSD of the reference channel; and adjustment of the transmit power of the second channel, at least in part, to achieve the transmit PSD of the second channel.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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