Uplink synchronisation control technique and its environment-dependent performance analysis

The use of uplink synchronisation (ULS) control techniques can turn uplink back to a synchronous operation mode to enhance bilateral data transmission rates of the air-interface. This is especially important for some applications where traffic in both links should be made equally high, such as video conferencing. A modelling method is introduced to study environment-dependent performance of the ULS control in a TDD-based cellular system.