Patent ID: 8457032

Claim:
A method for data transmission in a Time Division Duplexing (TDD) system, comprising: configuring, by a base station, a length respectively for a Downlink Pilot Slot (DwPTS) and an Uplink Pilot Slot (UpPTS) within a special field of a radio half-frame based on a current coverage area taking one Orthogonal Frequency Division Multiplexing (OFDM) symbol as a unit, and issuing a configured result to a user device; calculating a Guard Period (GP) length required for switching from downlink to uplink based on the coverage area, and configuring a length of a GP slot to occupy N OFDM symbols, wherein the GP length calculated is shorter than N OFDM symbols but longer than N−1 OFDM symbols, N is an integer greater than 1, wherein a total length of the DwPTS, the GP slot and the UpPTS is kept to be 1 ms; constructing, by the base station, radio half-frames for data transmission according to the configured result.