Method and apparatus for beamforming in wireless communication system
AssigneeElectronics and Telecommunications Research Institute
InventorsWooram Shin, Hyun-jae Kim, Yong Su Lee, Anseok Lee, Kwang Jae Lim, DongSeung Kwon
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Abstract
A beamforming apparatus and method for expanding coverage of a control channel are provided, by which neighboring communication devices are classified according to the number of beams that they can receive, and therefore the frequency or period of beam transmission is adjusted to transmit a control channel by a beamforming method. Hence, an overhead reduction and an increase in transmission rate can be achieved, and coverage holes can be prevented.
Claims16
A method for beamforming in a wireless communication device, the method comprising:
- receiving, from each of a plurality of neighboring communication devices, channel state information or beam information associated with said each of the plurality of neighboring communication devices;
- determining a criterion for beam transmission based on the received channel state information or beam information, including
- determining a plurality of beams receivable by the plurality of neighboring communication devices using the received channel state information or beam information,
- determining, for each of the plurality of beams, a set of neighboring communication devices that are configured to receive said each beam, and
- determining a transmission frequency for each of the plurality of beams, so that a beam receivable by more neighboring communication devices is transmitted with a higher frequency;
- and
- transmitting each of the plurality of beams to the neighboring communication devices included in the set according to the determined criterion.
A beamforming apparatus, comprising:
- a receiver configured to receive, from each of a plurality of neighboring communication devices, channel state information or beam information associated with said each of the plurality of neighboring communication devices;
- a controller configured to determine a criterion for beam transmission based on the received channel state information or beam information, by
- determining a plurality of beams receivable by the plurality of neighboring communication devices using the received channel state information or beam information,
- determining, for each of the plurality of beams, a set of neighboring communication devices that are configured to receive said each beam, and
- determining a transmission frequency for each of the plurality of beams, so that a beam receivable by more neighboring communication devices is transmitted with a higher frequency;
- and
- a transmitter configured to transmit each of the plurality of beams to the neighboring communication devices included in the set according to the determined criterion.
Dependencies are inferred from the claim text.