Patent ID: 9215135
Filing Date: 2015-12-15
Classification: H04L

Abstract:
1. A terminal apparatus configured to communicate with a base station apparatus using a first component carrier and a second component carrier and to report, to the base station apparatus, a response signal generated by performing bundling including spatial bundling and time-domain bundling on results of error detection of downlink data items, the terminal apparatus comprising one or more integrated circuits configured to: receive the downlink data items using the first component carrier and the second component carrier, respectively; detect an error in each of the downlink data items; and generate the response signal by performing bundling on the results of error detection based on a ratio of a number of bits of results of error detection between the first component carrier and the second component carrier so that a total number of bits of results of error detection of the downlink data items obtained in the error detection becomes a number of bits for reporting the response signal, wherein time-domain bundling on results of error detection of the first component carrier and results of error detection of the second component carrier is performed for each component carrier based on a ratio of a number of bits of results of error detection between the first component carrier and the second component carrier after the spatial bundling; wherein the one or more integrated circuits are further configured to determine, based on a ratio between a first number of bits of a result of error detection of the first component carrier immediately after spatial bundling and a second number of bits of a result of error detection in the second component carrier immediately after spatial bundling, a third number of bits of a result of error detection in the first component carrier after time-domain bundling and a fourth number of bits of a result of error detection in the second component carrier after time-domain bundling, respectively; and a ratio between the third number of bits and the fourth number of bits with respect to the number of bits for reporting the response signal is a natural number approximate to the ratio between the first number of bits and the second number of bits, and a difference between a ratio of the third number of bits to the first number of bits and a ratio of the fourth number of bits to the second number of bits becomes a minimum, while the sum of the third number of bits and the fourth number of bits is equal to the number of bits for reporting the response signal.