Patent ID: 9743392
Date: 2017-08-22
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method in a user equipment comprising: receiving, at the user equipment from a base station, downlink control information containing a channel state information request on a physical control channel in a subframe of a first serving cell, the channel state information request directing the user equipment to perform channel state information measurements for at least one aperiodic channel state information reference signal of a second serving cell; ascertaining channel state information reference signal resources in a subframe of the second serving cell based on at least the downlink control information contents; determining channel state information based on the ascertained channel state information reference signal resources; and sending the determined channel state information to the base station wherein the downlink control information also indicates granted resources on which the channel state information is sent by the user equipment to the base station.