Wireless communication apparatus and response control method

摘要

A wireless communication apparatus and a response control method wherein in a case of applying Persistent Allocation (PA) to MU-MIMO, the increase in the resources to be used in the feedback can be precluded. In a terminal, a response control unit causes, based on the type of downstream allocation control information, on an error detection result obtained by an error detecting unit and on a response rule table, a response signal to be transmitted by use of an upstream response resource designated in the downstream allocation control information. In the response rule table used in reception of a notification of MU-MIMO reallocation, respective different types of response signals are associated with a first case where there are no errors in the received downstream data of the designated resource designated in the downstream allocation control information received before that notification, a second case where the notification of MU-MIMO reallocation is successfully received and further there are no errors in the received downstream data of the designated resource, and a third case where the notification of MU-MIMO reallocation is not successfully received and further there are any errors in the received downstream data of the designated resource.

主权项

1. A radio communication apparatus that receives downlink data addressed to the radio communication apparatus transmitted in a multiuser MIMO communication for simultaneously transmitting a plurality of transmission data to a group including a plurality of radio communication apparatuses, the radio communication apparatus comprising:
a reception section that receives downlink allocation control information and the downlink data addressed to the radio communication apparatus and used for the multiuser MIMO communication; a determining section that determines a type of the received downlink allocation control information; an error detection section that detects a reception error of the received downlink data; and a response control section that transmits response signals corresponding to the downlink allocation control information and the received downlink data on uplink response resources including a control information response resource and a received data response resource specified by the downlink allocation control information, based on the determined type, a detection result of the reception error and a reception response rule.