Patent ID: 8868089
Filing Date: 2014-10-21
Classification: H04B,H04L,H04W

Abstract:
1. A method in a user equipment for reporting Channel State Information (CSI) to a base station in a cellular communication network, the method comprising: receiving, from the base station, in a subframe n, a grant of uplink resources to be used for CSI reporting, determining a subframe type of a subframe n+p, where p is a variable value; and reporting, to the base station, CSI that reflects channel conditions in subframes of the determined subframe type; wherein the determined subframe type is one of two or more subframe types, each of which two or more subframe types is associated with a respective set of different subframes, and wherein the reported CSI reflects channel conditions particular to subframes belonging to the set of subframes associated with the determined subframe type.