Weighting factor adjustment in adaptive antenna arrays
First Claim
1. A method of adjusting a plurality of weighting factors associated with a first access unit located at a first geographic location to collectively produce a collective radiation pattern over a defined geographic coverage area with a plurality of second access units, wherein each second access unit is located at a second geographic location distinct from the first geographic location, the method comprising:
- receiving, by the first access unit, user input of location coordinates defining the geographic coverage area;
identifying, by the first access unit, the plurality of second access units based on the defined geographic coverage area;
tracking, by the first access unit, a signal received from each of the second access units using a plurality of phase lock loops, wherein each phase lock loop is associated with an antenna element within the first access unit;
determining, by the first access unit, a phase relationship between the first access unit and each second access unit based on the tracked signals;
generating, by the first access unit, a plurality of weighting factors that produce a first portion of the collective radiation pattern based on the determined phase relationships, wherein each first weighting factor is associated with one of the plurality of antenna elements;
detecting, by the first access unit, that the first portion of the collective radiation pattern conflicts with a second portion of the collective radiation pattern produced by one of the second access units; and
adjusting, by the first access unit, the plurality of weighting factors based on the phase relationship, wherein the adjusted weighting factors produce a modified first portion of the collective radiation pattern that does not conflict with the second portion of the collective radiation 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
8 Claims
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1. A method of adjusting a plurality of weighting factors associated with a first access unit located at a first geographic location to collectively produce a collective radiation pattern over a defined geographic coverage area with a plurality of second access units, wherein each second access unit is located at a second geographic location distinct from the first geographic location, the method comprising:
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receiving, by the first access unit, user input of location coordinates defining the geographic coverage area; identifying, by the first access unit, the plurality of second access units based on the defined geographic coverage area; tracking, by the first access unit, a signal received from each of the second access units using a plurality of phase lock loops, wherein each phase lock loop is associated with an antenna element within the first access unit; determining, by the first access unit, a phase relationship between the first access unit and each second access unit based on the tracked signals; generating, by the first access unit, a plurality of weighting factors that produce a first portion of the collective radiation pattern based on the determined phase relationships, wherein each first weighting factor is associated with one of the plurality of antenna elements; detecting, by the first access unit, that the first portion of the collective radiation pattern conflicts with a second portion of the collective radiation pattern produced by one of the second access units; and adjusting, by the first access unit, the plurality of weighting factors based on the phase relationship, wherein the adjusted weighting factors produce a modified first portion of the collective radiation pattern that does not conflict with the second portion of the collective radiation pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification