US9831911B2

4G 5G

Title:
COMMUNICATION APPARATUS AND COMMUNICATION METHOD

Application Number:

US201615205302

Family ID:

18947

Publication Date:

28-11-2017

Application Date:

08-07-2016

Priority Date:

10-12-2008

Declaring Company:

Current Assignee:

Abstract  Abstract

A wireless communication terminal apparatus wherein CoMP communication can normally be performed without increasing the overhead of an upstream line control channel. In this apparatus a spreading unit primarily spreads a response signal by use of a ZAC sequence established by a control unit. A spreading unit secondarily spreads the response signal to which CP has been added by use of a block-wise spread code sequence established by the control unit. The control unit controls in accordance with sequence numbers and a hopping pattern established therein the circular shift amount of the ZAC sequence to be used for the primary spread in the spreading unit and the block-wise spread code sequence to be used for the secondary spread in the spreading unit. The hopping pattern established in the control unit is a hopping pattern common to a plurality of base stations that CoMP-receive the response signal.