Dynamic TDD uplink/downlink configuration

摘要

The invention relates to a method for dynamically indicating a TDD re-configuration to the mobile station by encoding the dynamic TDD re-configuration indication into two control format indicator, CFI, values, where each is transmitted in a different subframe within the same radio frame. The mobile station can determine based on the received two CFI values which TDD configuration is to be applied in the system. The TDD uplink/downlink configuration of the radio frames can thus be dynamically adapted to traffic needs in a fast and reliable way.

主权项

1. A method comprising:
setting by a base station a first value of an indicator in a first subframe i of a radio frame n and setting a second value of the indicator in a second subframe j of the same radio frame n to encode a Time Division Duplex (TDD) configuration, the TDD configuration defining uplink, downlink and special subframes for radio frames; transmitting by the base station the TDD configuration to a mobile station in communication system; determining by the mobile station the first value of the indicator in the first subframe i and the second value of the indicator in the second subframe j and determining the TDD configuration based on a code point which is composed by the determined first and second value of the indicator, wherein the indicator is a control format indicator, CFI, intended to be used in a downlink or special subframe for indicating a control region length in said downlink or special subframe and wherein i=1 and j=6 out of subframes 0-9 of the radio frame n.