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US 8,897,382 B2Granted
Method for determining precoding weights
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsAndreas Nilsson, Frederik Athley
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AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsAndreas Nilsson, Frederik Athley
Estimating the term…
The present invention relates to a method for determining precoding weights between a base station and one user equipment in a communication network. The base station is provided with an antenna structure having multiple antennas, and the antenna structure provides coverage in a coverage area. The precoding weights are stored in a codebook available to the base station and the user equipment. The method comprises: selecting to use a part of the coverage area; determining, at the base station, a subset of precoding weights stored in the codebook generating at least one precoding beam within the selected part of the coverage area; and informing the one user equipment of the determined subset of precoding weights generating the at least one precoding beam within the selected part of the coverage area.
A method for determining precoding weights between a base station and at least one user equipment in a communication network, said base station comprising an antenna structure including multiple antennas, said antenna structure providing coverage in a coverage area, said precoding weights are stored in a codebook available to the base station and the at least one user equipment, the method comprising:
A base station configured to communicate with at least one user equipment in a communication network, said base station comprising an antenna structure including multiple antennas, said antenna structure providing coverage in a coverage area, and precoding weights generating precoding beams are stored in a codebook available to the base station and the at least one user equipment wherein the base station is configured to calibrate each antenna, with corresponding radio chains and feeder cables, and to select to use a part of the coverage area by setting the antennas to a predetermined configuration based on the coverage provided by each calibrated antenna to provide coverage for the at least one user equipment, and the base station is further configured to determine a subset of precoding weights stored in the codebook generating at least one precoding beam within the selected part of the coverage area, and to inform said at least one user equipment of the predetermined configuration and said determined subset of precoding weights generating said at least one precoding beam within the selected part of the coverage area.
Dependencies are inferred from the claim text.