Patent ID: 9621321
Date: 2017-04-11
CPC Classifications: H04B,H04J,H04L,H04W

Claim:
1. A method in a first base station for obtaining channel state information from a user equipment, which first base station is included in a wireless communication system and which wireless communication system further includes the user equipment, wherein the method comprises: transmitting a first offset value to the user equipment for a first set of subframes of a first type, and transmitting a second offset value to the user equipment for a second set of subframes of a second type, the first offset value corresponding to differences in signal power or interference levels as between reference-signal transmissions and downlink-channel transmissions in subframes of the first type and the second offset value corresponding to differences in signal power or interference levels as between reference-signal transmissions and downlink-channel transmissions in subframes of the second type; and obtaining channel state information from the user equipment, where the channel state information is based on the first offset value and the second offset value.