Patent ID: 8891452
Filing Date: 2014-11-18
Classification: H04L,H04W

Abstract:
1. A terminal apparatus comprising: a receiving section configured to receive downlink control information including a sounding reference signal (SRS) transmission request, using one downlink control information format (DCI format) among a plurality of DCI formats, wherein each DCI format corresponds to at least one set of SRS parameters, the at least one set of SRS parameters for one DCI format is different from the at least one set of SRS parameters for another DCI format, and each set of SRS parameters specifies one of a plurality of SRS resources for use in transmitting the SRS, and wherein the plurality of DCI formats include a first DCI format corresponding to one set of SRS parameters and a second DCI format corresponding to three sets of SRS parameters, a number of bits used for the SRS transmission request is one for the first DCI format and a number of bits used for the SRS transmission request is two for the second DCI format; and a transmitting section configured to transmit the SRS using the SRS resource specified by the set of SRS parameters corresponding to said one DCI format.