US6654590B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determining a calibration function using at least one remote terminal
Assignee: Intel Corp
•
Filing: 2002-04-29
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Granted: 2003-11-25
•
Expires: 2022-04-29
Abstract
Abstract A calibration function for calibrating a base station can be determined using one or more remote terminals. In one embodiment of the present invention, determining the calibration function includes transmitting a calibration signal, using an array of antenna elements of a first radio, to a second radio, and receiving, at the first radio, a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal. Then, a second radio downlink spatial signature may be determined using the downlink spatial signature related signal. Also, a second radio uplink spatial signature may be determined using an uplink spatial signature signal from the second radio to the first radio. The calibration function may then be determined using the second radio downlink spatial signature and the second radio uplink spatial signature. Furthermore, one embodiment of the present invention may include determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Inventors
- 👤 Tibor Boros
- 👤 Craig H. Barratt
- 👤 Christopher R. Uhlik
- 👤 Mitchell D. Trott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:51
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/03; H04L25/03006; H04L25/03343; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/246; H01Q3/00; H01Q3/26; H01Q3/2605; H01Q3/267; H04B; H04B17/00; H04B17/10; H04B17/11; H04B17/20; H04B17/21; H04B17/22; H04B17/221; H04B7/00; H04B7/005; H04B7/02; H04B7/04; H04B7/06; H04B7/0613; H04B7/0615; H04B7/0617; H04B7/08; H04B7/0837; H04B7/0842; H04B7/0848; H04B17/12; H04B17/14; H04L2025/0335; H04L2025/03426
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
130 words
A method comprising: transmitting a calibration signal, using an array of antenna elements of a first radio, to a second radio; receiving, at the first radio, a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio to the first radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 2
Independent Claim
130 words
A method comprising: transmitting a calibration signal, using an array of antenna elements of a first radio, to a second radio; receiving, at the first radio, a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio to the first radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 3
Dependent Claim
105 words
The method of claim 1 , further comprising: transmitting a second calibration signal from the first radio to a fourth radio; receiving, at the first radio, a fourth radio downlink spatial signature related signal from the fourth radio, the fourth radio downlink spatial signature related signal containing information related to a fourth radio downlink spatial signature, the information being calculated using the second calibration signal; determining a fourth radio downlink spatial signature using the fourth radio downlink spatial signature related signal; and determining a fourth radio uplink spatial signature using a fourth radio uplink spatial signature signal from the fourth radio to the first radio.
Claim 4
Dependent Claim
42 words
The method of claim 2 , wherein determining the calibration function comprises determining the calibration function using the second radio downlink spatial signature, the second radio uplink spatial signature, the fourth radio downlink spatial signature, and the fourth radio uplink spatial signature.
Claim 5
Dependent Claim
31 words
The method of claim 2 , wherein determining the fourth radio uplink spatial signature comprises determining the fourth radio uplink spatial signature using the fourth radio downlink spatial signature related signal.
Claim 6
Dependent Claim
29 words
The method of claim 1 , wherein determining the second radio uplink spatial signature comprises determining the second radio uplink spatial signature using the downlink spatial signature related signal.
Claim 7
Dependent Claim
51 words
The method of claim 1 , wherein receiving the downlink spatial signature related signal from the second radio comprises receiving the downlink spatial signature related signal, the downlink spatial signature related signal including the second radio downlink spatial signature, the second radio downlink spatial signature being calculated using the calibration signal.
Claim 8
Dependent Claim
67 words
The method of claim 1 , wherein transmitting a calibration signal from an array of antenna elements comprises: transmitting a combined signal using a first antenna element of the antenna array, the combined signal comprising a first signal and a second signal; transmitting the first signal using the first antenna element; and transmitting the second signal using a second antenna element of the array of antenna elements.
Claim 9
Dependent Claim
40 words
The method of claim 1 , wherein determining the calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature comprises dividing the second radio uplink spatial signature by the second radio downlink spatial signature.
Claim 10
Dependent Claim
96 words
The method of claim 1 , wherein determining the third radio downlink weight vector using the third radio uplink weight vector and the calibration function comprises: receiving a signal from the third radio at the array of antenna elements of the first radio; determining the third radio uplink weight vector using a first portion of the received signal, the third radio uplink weight vector facilitating spatial processing of a second portion of the received signal; and determining the third radio downlink weight vector by mathematically combining the third radio uplink weight vector with the calibration vector.
Claim 11
Dependent Claim
35 words
The method of claim 1 , wherein the first radio comprises a base station in a wireless radio communications system, and the second and third radios comprise remote terminals in the wireless radio communications system.
Claim 12
Dependent Claim
27 words
The method of claim 1 , further comprising transmitting a communications signal from the first radio to the third radio using the third radio downlink weight vector.
Claim 13
Dependent Claim
149 words
A machine-readable medium having stored thereon data representing instructions that, when executed by a processor, cause the processor to perform operations comprising: transmitting a calibration signal, using an array of antenna elements of a first radio, to a second radio; receiving, at the first radio, a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio to the first radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 14
Dependent Claim
149 words
A machine-readable medium having stored thereon data representing instructions that, when executed by a processor, cause the processor to perform operations comprising: transmitting a calibration signal, using an array of antenna elements of a first radio, to a second radio; receiving, at the first radio, a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio to the first radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 15
Dependent Claim
115 words
The machine-readable medium of claim 12 , wherein the instructions further cause the processor to perform operations comprising: transmitting a second calibration signal from the first radio to a fourth radio; receiving, at the first radio, a fourth radio downlink spatial signature related signal from the fourth radio, the fourth radio downlink spatial signature related signal containing information related to a fourth radio downlink spatial signature, the information being calculated using the second calibration signal; determining a fourth radio downlink spatial signature using the fourth radio downlink spatial signature related signal; and determining a fourth radio uplink spatial signature using a fourth radio uplink spatial signature signal from the fourth radio to the first radio.
Claim 16
Dependent Claim
43 words
The machine-readable medium of claim 13 , wherein determining the calibration function comprises determining the calibration function using the second radio downlink spatial signature, the second radio uplink spatial signature, the fourth radio downlink spatial signature, and the fourth radio uplink spatial signature.
Claim 17
Dependent Claim
32 words
The machine-readable medium of claim 13 , wherein determining the fourth radio uplink spatial signature comprises determining the fourth radio uplink spatial signature using the fourth radio downlink spatial signature related signal.
Claim 18
Dependent Claim
30 words
The machine-readable medium of claim 12 , wherein determining the second radio uplink spatial signature comprises determining the second radio uplink spatial signature using the downlink spatial signature related signal.
Claim 19
Dependent Claim
52 words
The machine-readable medium of claim 12 , wherein receiving the downlink spatial signature related signal from the second radio comprises receiving the downlink spatial signature related signal, the downlink spatial signature related signal including the second radio downlink spatial signature, the second radio downlink spatial signature being calculated using the calibration signal.
Claim 20
Dependent Claim
68 words
The machine-readable medium of claim 12 , wherein transmitting a calibration signal from an array of antenna elements comprises: transmitting a combined signal using a first antenna element of the antenna array, the combined signal comprising a first signal and a second signal; transmitting the first signal using the first antenna element; and transmitting the second signal using a second antenna element of the array of antenna elements.
Claim 21
Dependent Claim
41 words
The machine-readable medium of claim 12 , wherein determining the calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature comprises dividing the second radio uplink spatial signature by the second radio downlink spatial signature.
Claim 22
Dependent Claim
97 words
The machine-readable medium of claim 12 , wherein determining the third radio downlink weight vector using the third radio uplink weight vector and the calibration function comprises: receiving a signal from the third radio at the array of antenna elements of the first radio; determining the third radio uplink weight vector using a first portion of the received signal, the third radio uplink weight vector facilitating spatial processing of a second portion of the received signal; and determining the third radio downlink weight vector by mathematically combining the third radio uplink weight vector with the calibration vector.
Claim 23
Dependent Claim
36 words
The machine-readable medium of claim 12 , wherein the first radio comprises a base station in a wireless radio communications system, and the second and third radios comprise remote terminals in the wireless radio communications system.
Claim 24
Dependent Claim
30 words
The machine-readable medium of claim 12 , the operations further comprising transmitting a communications signal from the first radio to the third radio using the third radio downlink weight vector.
Claim 25
Dependent Claim
138 words
A radio comprising: a transmitter coupled to an array of antenna elements for transmitting a calibration signal, using the array of antenna elements to a second radio; a receiver for receiving a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; a processor coupled to the receiver for: determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 26
Dependent Claim
138 words
A radio comprising: a transmitter coupled to an array of antenna elements for transmitting a calibration signal, using the array of antenna elements to a second radio; a receiver for receiving a downlink spatial signature related signal from the second radio containing information related to a second radio downlink spatial signature, the information being calculated using the calibration signal; a processor coupled to the receiver for: determining a second radio downlink spatial signature using the downlink spatial signature related signal; determining a second radio uplink spatial signature using an uplink spatial signature signal from the second radio; determining a calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature; and determining a third radio downlink weight vector for a third radio using a third radio uplink weight vector and the calibration function.
Claim 27
Dependent Claim
108 words
The radio of claim 23 , wherein: the transmitter is further for transmitting a second calibration signal to a fourth radio; the receiver is further for receiving a fourth radio downlink spatial signature related signal from the fourth radio, the fourth radio downlink spatial signature related signal containing information related to a fourth radio downlink spatial signature, the information being calculated using the second calibration signal; and the processor is further for: determining a fourth radio downlink spatial signature using the fourth radio downlink spatial signature related signal; and determining a fourth radio uplink spatial signature using a fourth radio uplink spatial signature signal from the fourth radio.
Claim 28
Dependent Claim
42 words
The radio of claim 24 , wherein determining the calibration function comprises determining the calibration function using the second radio downlink spatial signature, the second radio uplink spatial signature, the fourth radio downlink spatial signature, and the fourth radio uplink spatial signature.
Claim 29
Dependent Claim
31 words
The radio of claim 24 , wherein determining the fourth radio uplink spatial signature comprises determining the fourth radio uplink spatial signature using the fourth radio downlink spatial signature related signal.
Claim 30
Dependent Claim
29 words
The radio of claim 23 , wherein determining the second radio uplink spatial signature comprises determining the second radio uplink spatial signature using the downlink spatial signature related signal.
Claim 31
Dependent Claim
51 words
The radio of claim 23 , wherein receiving the downlink spatial signature related signal from the second radio comprises receiving the downlink spatial signature related signal, the downlink spatial signature related signal including the second radio downlink spatial signature, the second radio downlink spatial signature being calculated using the calibration signal.
Claim 32
Dependent Claim
71 words
The radio of claim 23 , wherein transmitting a calibration signal from an array of antenna elements comprises using the transmitter for: transmitting a combined signal using a first antenna element of the antenna array, the combined signal comprising a first signal and a second signal; transmitting the first signal using the first antenna element; and transmitting the second signal using a second antenna element of the array of antenna elements.
Claim 33
Dependent Claim
40 words
The radio of claim 23 , wherein determining the calibration function using the second radio downlink spatial signature and the second radio uplink spatial signature comprises dividing the second radio uplink spatial signature by the second radio downlink spatial signature.
Claim 34
Dependent Claim
94 words
The radio of claim 23 , wherein determining the third radio downlink weight vector using the third radio uplink weight vector and the calibration function comprises: receiving a signal from the third radio at the receiver; and using the processor for: determining the third radio uplink weight vector using a first portion of the received signal, the third radio uplink weight vector facilitating spatial processing of a second portion of the received signal; and determining the third radio downlink weight vector by mathematically combining the third radio uplink weight vector with the calibration vector.
Claim 35
Dependent Claim
35 words
The radio of claim 23 , wherein the communications device comprises a base station in a wireless radio communications system, and the second and third radios comprise remote terminals in the wireless radio communications system.
Claim 36
Dependent Claim
27 words
The radio of claim 23 , wherein the transmitter is further for transmitting a communications signal to the third radio using the third radio downlink weight vector.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-11-24 | 2007-05-26 | 2007-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-11-24 | 2011-05-26 | 2011-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-11-24 | 2015-05-26 | 2015-11-25 | $7700.00 | Window Closed / Lapsed |