Methods and Systems For Link Adaptation

摘要

A base station that implements an improved link adaptation process that takes into account the fact that a certain reference signal (e.g., CSI-RS) may be seen as interference by certain wireless communication devices (WCDs). Accordingly, when the base station schedules a data transmission for the WCD to occur in a particular TTI and the base station is scheduled to transmit the CSI-RS during the same TTI, the base station will tend to select a more robust MCS for the data transmission to the WCD to counter effect the possible interference caused by the CSI-RS.

主权项

1. A method performed by a base station, comprising:
scheduling a first data transmission for a wireless communication device (WCD), said scheduled first data transmission to occur during a first transmission time interval (TTI); determining whether to a) select a first modulation and coding scheme (MCS), for the first data transmission using a first offset value or b) select the MCS for the data transmission using a second offset value that is different than said first offset value, wherein said determination of whether to use the first or second offset value is based on whether a certain reference signal (RS) is also scheduled to be transmitted during said first transmission time interval; selecting a first MCS using the first offset value as a result of determining that said certain RS is also scheduled to be transmitted during said first transmission time interval; and during the first transmission time interval, using the selected first MCS to transmit data to the WCD.