| 摘要 |
PROBLEM TO BE SOLVED: To provide a frame structure for cellular telecommunication systems. SOLUTION: In order to double the size of cells for a UMTS/ UTRAN(Universal Mobile Terrestrial System/UMTS Terrestrial Radio Access Network) system operating in time division mode (TDD) from 3.75 km to 7.5 km, the node B station defines a guard period (66) for a downlink slot followed by an adjacent uplink slot to be longer than the guard period (68) for an uplink slot, followed by an adjacent downlink slot, whereby the cell size is extended. Each UE(user equipment) adjusts its timing, in response to timing deviation signals (64) transmitted at the start of each downlink burst, so as to transmit an uplink burst which arrive at the node B, at the beginning of the next uplink slot. |
