Beamforming codeword exchange between base stations
First Claim
1. A first base station configured to communicate with a wireless device, the first base station comprising:
- one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the first base station to;
receive, from a second base station, at least one message comprising a plurality of downlink beamforming information elements for a downlink cell, wherein each downlink beamforming information element of the plurality of downlink beamforming information elements is associated with a respective resource block of a plurality of resource blocks in the downlink cell and indicates a parameter for beamforming for the respective resource block;
select, for at least one resource block of the plurality of resource blocks, a first beamforming codeword based at least in part on at least one first downlink beamforming information element of the plurality of downlink beamforming information elements, wherein the at least one first downlink beamforming information element is associated with the at least one resource block; and
transmit, to the wireless device, signals on the at least one resource block employing the first beamforming codeword.
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Accused Products
Abstract
Methods, apparatus, and systems for wireless communications are disclosed. A first base station may be configured to receive, from a second base station, one or more messages. The messages may include downlink beamforming information elements for a downlink cell. Each downlink beamforming information element of the plurality of downlink beamforming information elements may be associated with a respective resource block of a plurality of resource blocks in the downlink cell. The first base station may select a first beamforming codeword for at least one resource block of the plurality of resource blocks based on the downlink beamforming information associated with the at least one resource block. The first base station may transmit, to a wireless device, signals on the at least one resource block employing the first beamforming codeword.
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Citations
27 Claims
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1. A first base station configured to communicate with a wireless device, the first base station comprising:
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one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the first base station to; receive, from a second base station, at least one message comprising a plurality of downlink beamforming information elements for a downlink cell, wherein each downlink beamforming information element of the plurality of downlink beamforming information elements is associated with a respective resource block of a plurality of resource blocks in the downlink cell and indicates a parameter for beamforming for the respective resource block; select, for at least one resource block of the plurality of resource blocks, a first beamforming codeword based at least in part on at least one first downlink beamforming information element of the plurality of downlink beamforming information elements, wherein the at least one first downlink beamforming information element is associated with the at least one resource block; and transmit, to the wireless device, signals on the at least one resource block employing the first beamforming codeword. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for use in a first base station configured to communicate with a wireless device, the method comprising:
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receiving, by the first base station and from a second base station, at least one message comprising a plurality of downlink beamforming information elements for a downlink cell, wherein each downlink beamforming information element of the plurality of downlink beamforming information elements is associated with a respective resource block of a plurality of resource blocks in the downlink cell and indicates a parameter for beamforming for the respective resource block; selecting, for at least one resource block of the plurality of resource blocks, a first beamforming codeword based at least in part on at least one first downlink beamforming information element of the plurality of downlink beamforming information elements, wherein the at least one first downlink beamforming information element is associated with the at least one resource block; and transmit, by the first base stations and to the wireless device, signals on the at least one resource block employing the first beamforming codeword. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a wireless device configured to receive signals from a first base station; the first base station, wherein the first base station is configured to; receive, from a second base station, at least one message comprising a plurality of downlink beamforming information elements for a downlink cell, wherein each downlink beamforming information element of the plurality of downlink beamforming information elements is associated with a respective resource block of a plurality of resource blocks in the downlink cell and indicates a parameter for beamforming for the respective resource block; select, for at least one resource block of the plurality of resource blocks, a first beamforming codeword based at least in part on at least one first downlink beamforming information element of the plurality of downlink beamforming information elements, wherein the at least one first downlink beamforming information element is associated with the at least one resource block; and transmit, to the wireless device, signals on the at least one resource block employing the first beamforming codeword; and the second base station, wherein the second base station is configured to; transmit, to the first base station, the at least one message comprising the plurality of downlink beamforming information elements for the downlink cell. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification