Method for semi-statically adapting uplink multiple-input multiple-output transmission

摘要

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.

主权项

1. 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.