Patent ID: 9742537
Date: 2017-08-22
CPC Classifications: H04L,H04W

Claim:
1. A terminal device comprising: a measurement circuit configured to and/or programmed to, for a value of a channel quality indicator that is reported in a subframe n, derive an index of the channel quality indicator based on a channel state information reference resource; and a transmission circuit configured to and/or programmed to report channel state information which comprises the channel quality indicator in the subframe n, wherein in a time domain, the channel state information reference resource is defined by a subframe n−n wherein for periodic reporting of the channel state information, the n wherein the valid subframe satisfies criteria which include at least a criterion (i), wherein the criterion (i) stipulates that, in a case where multiple cells with different uplink-downlink configurations are aggregated and the terminal device is not capable of simultaneous reception and transmission in the aggregated multiple cells, the valid subframe in a primary cell is a downlink subframe or a special subframe that is indicated by an uplink-downlink configuration for a radio frame for the primary cell, the multiple cells including at least the primary cell and a serving cell, wherein for each of the multiple cells, in a case where a physical downlink control channel which is used for signaling information that indicates an uplink-downlink configuration for the radio frame is detected, the uplink-downlink configuration for the radio frame is given by the information that indicates the uplink-downlink configuration for the radio frame, wherein for each of the multiple cells, in a case where the physical downlink control channel which is used for signaling the information that indicates the uplink-downlink configuration for the radio frame is not detected, the uplink-downlink configuration for the radio frame is same as an uplink-downlink configuration that is indicated by a higher layer parameter.