TIMING RELATION OF TPC COMMAND AND UE TRANSMIT POWER ADJUSTMENT IN ADAPTIVE TDD SYSTEMS

摘要

A method of separate accumulation in closed-loop power control in adaptive TDD systems is proposed. A UE obtains configuration information from a base station in an adaptive TDD system. Each radio frame comprises a plurality of subframes, which are configured into two or more subframe sets. The UE receives a transmit power control (TPC) command in a downlink subframe. The UE determines a power control adjustment state for an uplink subframe i based on the TPC command. The power control adjustment state of subframe i is accumulated from a power control adjustment state of a previous uplink subframe j, where subframe i and subframe j belong to the same subframe set. In one embodiment, subframe j is the closest previous uplink subframe with respect to uplink subframe i.