초록 ▼

In a synchronous code division multiple access (SCDMA) time division duplex (TDD) communication system, a remote terminal uses both open loop and closed loop techniques for synchronization with a base station. The timing of reception of information by tile remote terminal is performed with an open l

In a synchronous code division multiple access (SCDMA) time division duplex (TDD) communication system, a remote terminal uses both open loop and closed loop techniques for synchronization with a base station. The timing of reception of information by tile remote terminal is performed with an open loop technique, while the timing of transmissions from the terminal is performed with a closed loop technique. Furthermore, a clock locked loop in the terminal compensates for differences between clocks of the terminal and the base station. The clock locked loop responds to signals from both the aforesaid open loop and closed loop techniques.

대표청구항 ▼

1. A method of adjusting a frequency of a clock locked loop in a remote terminal for timing reception of communication signals including downlink synchronization signals and uplink delta signals from a base station comprising the steps of:adjusting the frequency of the clock locked loop in response

1. A method of adjusting a frequency of a clock locked loop in a remote terminal for timing reception of communication signals including downlink synchronization signals and uplink delta signals from a base station comprising the steps of:adjusting the frequency of the clock locked loop in response to a timing of reception of downlink synchronization signals while the remote terminal is operating in a receive only base station monitor mode; and adjusting the frequency of the clock locked loop in response to uplink delta signals received by the remote terminal while the remote terminal is operating in a receive and transmit base station communication mode.