Multi-beam MIMO time division duplex base station using subset of radios
First Claim
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1. A system comprising:
- a plurality of transmit and receive antennas covering one sector of a cellular communication base station;
a multi-beam RF beamforming matrix connected to said transmit and receive antennas;
a plurality of radio circuitries connected to said multi-beam RF beamforming matrix; and
a baseband module connected to said radio circuitries,wherein the multi-beam RF beamforming matrix is configured to generate one sector beam and two or more directional co-frequency beams, wherein the sector beam operates over a different frequency than said directional co-frequency beams,wherein the baseband module assigns each user equipment (UE) to the sector beam or to at least one of said directional co-frequency beams based on a cross-talk parameter at the respective UE,wherein a number M denotes the number said directional beams and a number N denotes the number of said radio circuitries and wherein M>
N.
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Abstract
A system and method may include a plurality of transmit and receive antennas covering one sector of a cellular communication base station; a multi-beam RF beamforming matrix connected to the transmit and receive antennas; a plurality of radio circuitries connected to the multi-beam RF beamforming matrix; and a baseband module connected to the radio circuitries. The multi-beam RF beamforming matrix may be configured to generate one sector beam and two or more directional co-frequency beams pointed at user equipment (UEs) within the sector, as instructed by the baseband module. A number M denotes the number the directional beams and a number N denotes the number of the radio circuitries and wherein M>N.
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Citations
29 Claims
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1. A system comprising:
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a plurality of transmit and receive antennas covering one sector of a cellular communication base station; a multi-beam RF beamforming matrix connected to said transmit and receive antennas; a plurality of radio circuitries connected to said multi-beam RF beamforming matrix; and a baseband module connected to said radio circuitries, wherein the multi-beam RF beamforming matrix is configured to generate one sector beam and two or more directional co-frequency beams, wherein the sector beam operates over a different frequency than said directional co-frequency beams, wherein the baseband module assigns each user equipment (UE) to the sector beam or to at least one of said directional co-frequency beams based on a cross-talk parameter at the respective UE, wherein a number M denotes the number said directional beams and a number N denotes the number of said radio circuitries and wherein M>
N. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification