Patent ID: 9060306
Filing Date: 2015-06-16
Classification: H04B,H04L,H04W

Abstract:
1. A method in a user equipment for estimating a channel quality indicator, CQI, wherein the user equipment and a radio network node are comprised in a radio communication system, wherein a first reference signal is carried by a downlink channel of the radio communication system, wherein the method comprises: receiving from the radio network node, information about scheduling of a downlink transmission to the user equipment, and information about a second reference signal being different from the first reference signal, wherein the information about the second reference signal comprises one or more of: a modulation scheme of the second reference signal, a transport block size for the second reference signal, a power of the second reference signal, and a code for code division multiplexing for the second reference signal; receiving from the radio network node the downlink transmission according to the received information about scheduling of the downlink transmission, wherein the downlink transmission comprises the first reference signal and the second reference signal; and estimating the CQI based on the first reference signal, and the second reference signal by means of the information about the second reference signal.