Method for semi-statically adapting uplink multiple-input multiple-output transmission
AssigneeGoogle Technology Holdings LLC
InventorsXiangyang Zhuang, Tyler Brown
Life of this patent
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Abstract
A method, a wireless terminal device, and a base station are disclosed. A receiving unit 408 may receive from a base station an antenna precoding instruction for an uplink transmission. A processor 304 may execute a modification of the antenna precoding instruction according to a transmit antenna adapter into a customized precoding. A transmitting unit 406 may perform the uplink transmission according to the customized precoding.
Claims18
A method for performing an uplink transmission with a wireless terminal device, comprising:
- receiving, at the wireless terminal, from a base station an antenna precoding instruction;
- receiving, at the wireless terminal, from the base station a representation of a transmit antenna adapter in an adapter transmission message;
- modifying the antenna precoding instruction according to the representation of the transmit antenna adapter, wherein modifying the antenna precoding instruction comprises at least one of:
- (i) re-indexing the transmit antenna, or (ii) covariance matrix-based pattern virtualization, wherein re-indexing the transmit antenna comprises using a permutation matrix having one entry in each column equal to 1 and remaining entries equal to 0;
- and performing the uplink transmission according to the modified precoding.
A wireless terminal device for performing an uplink transmission, comprising:
- a receiving unit adapted to receive from a base station an antenna precoding instruction;
- one or more processors configured to:
- receive from the base station a representation of a transmit antenna adapter in an adapter transmission message;
- modify the antenna precoding instruction according to the representation of the transmit antenna adapter, wherein modifying the antenna precoding instruction comprises at least one of:
- (i) re-indexing the transmit antenna, or (ii) covariance matrix-based pattern virtualization, wherein re-indexing the transmit antenna comprises using a permutation matrix having one entry in each column equal to 1 and remaining entries equal to 0;
- and a transmitting unit adapted to perform uplink transmission according to the modified precoding.
A non-transitory computer-readable medium storing a set of instructions executable by a processor for performing a method, comprising:
- receiving, at the wireless terminal, from a base station an antenna precoding instruction;
- receiving, at the wireless terminal, from the base station a representation of a transmit antenna adapter in an adapter transmission message;
- modifying the antenna precoding instruction according to the representation of the transmit antenna adapter, wherein modifying the antenna precoding instruction comprises at least one of:
- (i) re-indexing the transmit antenna;
- or (ii) covariance matrix-based pattern virtualization wherein re-indexing the transmit antenna comprises using a permutation matrix having one entry in each column equal to 1 and remaining entries equal to 0;
- and performing the uplink transmission according to the modified precoding.
Dependencies are inferred from the claim text.