Beam information exchange between base stations

摘要

A base station receives a message comprising at least one index identifying a subset of a second plurality of beamforming codewords. Each of the second plurality of beamforming codewords is identifiable by an index presented by a number of bits. The number of bits is greater than or equal to log2(N), N being number of the second plurality of beamforming codewords, and less than number of bits in representation of a corresponding beamforming codeword. The base station transmits signals employing a first plurality of beamforming codewords being selected employing the subset of the second plurality of beamforming codewords.

主权项

1. A method comprising:
receiving by a first base station and from a second base station, at least one message comprising at least one index indicating a subset of a plurality of beamforming codewords associated with the second base station, wherein each beamforming codeword of the plurality of beamforming codewords associated with the second base station is identifiable by an index represented by a first number of bits, wherein the first number of bits is:
greater than or equal to log2(N), wherein N is a number of beamforming codewords in the plurality of beamforming codewords associated with the second base station; andless than a second number of bits in a representation of a corresponding beamforming codeword; and transmitting by the first base station and to a plurality of wireless devices, signals employing one or more first beamforming codewords selected based, at least in part, on the subset of the plurality of beamforming codewords associated with the second base station.