Patent ID: 8391251
Filing Date: 2013-03-05
Classification: H04B,H04W

Abstract:
1. A transmission method for a time division duplex mobile communication system, comprising: (1) setting a minimum unit of transmission time interval and a system frame structure comprising radio sub frames, wherein each of the radio sub frames is composed of a downlink pilot time slot, a switching guard period, a synchronization time slot and a plurality of service time slots, wherein the transmission time interval uses the length of time slot as a unit and the synchronization time slot is further used to transmit uplink service data besides transmitting uplink synchronization information; (2) a user obtaining from a network side the downlink synchronization by receiving downlink pilot information of the downlink pilot time slot, and obtaining corresponding configuration information of cell by reading cell broadcasting information, and then transmitting uplink synchronization information in the synchronization time slot to fulfill a random access process, wherein the configuration information includes transmission time interval and system frame structure information; (3) the network side and the user transmitting call information to one another, and each processing call acknowledgement acknowledging the call information transmitted from the other according to the transmission time interval; (4) the network side allocating a channel for the user, wherein the network side and the user communicates through the allocated channel, wherein the service time slot has a guard time interval for switching from the downlink time slot to the uplink time slot, and wherein the guard time interval used to switch from the downlink time slot to the uplink time slot and the service time slot length used to transmit service data in the service time slots are adjusted according to the coverage of the system, thereby the sum of the guard time interval and the service time slot length is a constant.