TERMINAL APPARATUS, AND BASE STATION APPARATUS

摘要

A terminal apparatus includes: a receiver configured to receive a downlink control information with a HARQ (hybrid automatic repeat request) process number through a physical downlink control channel for a serving cell; wherein for FDD (frequency division duplexing), a field of the HARQ process number is 3 bits and a maximum number of the HARQ process for the serving cell is 8, and for FDD-TDD (time division duplexing), a primary cell with a frame structure type 2 and the serving cell with a frame structure type 1, a field of the HARQ process number is 4 bits and the maximum number of the HARQ process for the serving cell is determined by a configuration based on a uplink/downlink configuration for the serving cell, as indicated in a table.