Weighting Factor Adjustment in Adaptive Antenna Arrays
First Claim
1. A method of producing a desired coverage area in a wireless network, the method comprising:
- (a) calculating intra-unit phase relationships between antenna elements of a plurality of access units;
(b) measuring inter-unit phase relationships between the plurality of access units;
(c) receiving an indication of the desired coverage area collectively produced by the plurality of access units;
(d) determining a set of weighting factors, wherein each weighting factor is associated with an individual antenna element in the plurality of access units and the set of weighting factors provide the desired coverage pattern; and
(e) maintaining phase lock between the plurality of access units to control the desired coverage pattern.
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Accused Products
Abstract
A method of forming an adaptive antenna array includes calculating intra-unit phase relationships between antenna elements of a plurality of access units and measuring inter-unit phase relationships between the access units. An indication of a desired coverage area collectively produced by the plurality of access units is received. A set of weighting factors is determined. Each weighting factor is associated with an individual antenna element in the plurality of access units and the set of weighting factors provide the desired coverage pattern. Phase lock between the plurality of access units is maintained to control the desired coverage pattern.
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Citations
16 Claims
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1. A method of producing a desired coverage area in a wireless network, the method comprising:
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(a) calculating intra-unit phase relationships between antenna elements of a plurality of access units; (b) measuring inter-unit phase relationships between the plurality of access units; (c) receiving an indication of the desired coverage area collectively produced by the plurality of access units; (d) determining a set of weighting factors, wherein each weighting factor is associated with an individual antenna element in the plurality of access units and the set of weighting factors provide the desired coverage pattern; and (e) maintaining phase lock between the plurality of access units to control the desired coverage pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of adjusting a plurality of weighting factors associated with an access unit, the method comprising:
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(a) associating a phase lock loop with each of a plurality of antenna elements within the access unit; (b) tracking a signal received from at least one other access unit using the phase lock loop associated with each antenna element; (c) determining a phase relationship between the access unit and the at least one other access unit; (d) receiving an indication of a desired coverage pattern collectively produced by the access unit and the at least one other access unit; (e) producing a plurality of weighting factors that produce the desired coverage pattern, wherein each weighting factor is associated with one of the plurality of antenna elements; and (f) adjusting the plurality of weighting factors based on the phase relationship, wherein the adjusted weighting factors produce the desired coverage pattern. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A multi-unit adaptive array system, the system comprising:
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(a) a first wireless access unit, wherein the first wireless access unit comprises a plurality of antenna elements and a plurality of phase lock loops, the first wireless access unit configured to produce a first set of weighting factors associated with a desired coverage area; and (b) a second wireless access unit, wherein the second wireless access unit comprises a plurality of antenna elements and a plurality of phase lock loops, the second wireless access unit configured to produce a second set of weighting factors associated with the desired coverage area, wherein the first and second sets of weighting factors are adjusted to produce the desired coverage area based at least in part on intra-phase relationships determined from the phase lock loops of the first and second wireless access units.
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Specification