Implicit MIMO antenna selection
AssigneeMarvell International Ltd.
InventorsHongyuan Zhang, Rohit U. Nabar
Life of this patent
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Abstract
A plurality of consecutive sounding data units are received via a reverse link. Each consecutive sounding data unit is received via a different subset of antennas. Channel state information (CSI) is generated based on the received plurality of consecutive sounding data units. A subset of antennas to use in a forward link is determined based on the generated CSI.
Claims20
A method in a communication device configured to transmit data units via a forward link and receive data units via a reverse link, the method comprising:
- receiving, at the communication device, a plurality of consecutive sounding data units via the reverse link, wherein each consecutive sounding data unit is received via a different subset of antennas;
- generating, at the communication device, channel state information (CSI), wherein the CSI is generated based on the received plurality of consecutive sounding data units;
- and
- determining, at the communication device, a subset of antennas to use in the forward link, wherein the subset of antennas to use in the forward link is determined based on the CSI.
An apparatus configured to transmit data units via a forward link and receive data units via a reverse link, the apparatus comprising:
- a switch control unit to cause a different subset of antennas to be coupled by a switch device to a set of receive radio frequency chains as each of a plurality of consecutive sounding data units is received via the reverse link;
- and
- a channel state information (CSI) determination unit to generate CSI based on the received plurality of consecutive sounding data units,
- wherein the switch control unit is configured to determine a subset of antennas to use in the forward link based on the CSI.
A method in a communication device configured to transmit data units via a forward link and receive data units via a reverse link, the method comprising:
- receiving, at the communication device, a plurality of consecutive sounding data units via the reverse link, wherein each consecutive sounding data unit is received via a different subset of antennas;
- generating, at the communication device, channel state information (CSI), wherein the CSI is generated based on the received plurality of consecutive sounding data units;
- determining, at the communication device, a subset of antennas to use in the forward link, wherein the subset of antennas to use in the forward link is determined based on the CSI;
- and
- determining, at the communication device, a subset of antennas to use in the reverse link, wherein the subset of antennas to use in the reverse link is determined based on the generated CSI.
Dependencies are inferred from the claim text.