Abstract: A method and an interface unit is provided to maintain timing synchronization between a first Radio Equipment Controller (REC) and a second REC operating with a multi-standard base station. The first REC receives a synchronization signal and synchronized data output is generated from the synchronization signal. A clock signal is then generated from the synchronized data output. At the second REC, the synchronized data output is received and a synchronization source is then reconstructed from the first clock signal. A timing and frequency component of a second clock signal is then aligned to that of the reconstructed synchronization source, such that the second REC can maintain synchronization with the first REC.

Abstract: A method of controlling radio link delay in a multi-standard wireless system having a first Radio Equipment Controller (REC) operating with a first radio standard interface and a second REC operating with a second radio standard interface is disclosed. A time delay between the first REC and a Radio Equipment (RE) and a time delay between the second REC and the RE is determined. When radio signal data from the first and second REC are received, they are stored into a memory. The stored radio signal data is then marked in accordance with the calculated time delay. The marked radio signal data from each REC is then multiplexed into a single radio signal timed according to a reference timing clock signal for transmission to the RE.

Abstract: A method and an interface unit is provided to maintain timing synchronization between a first Radio Equipment Controller (REC) and a second REC operating with a multi-standard base station. The first REC receives a synchronization signal and synchronized data output is generated from the synchronization signal. A clock signal is then generated from the synchronized data output. At the second REC, the synchronized data output is received and a synchronization source is then reconstructed from the first clock signal. A timing and frequency component of a second clock signal is then aligned to that of the reconstructed synchronization source, such that the second REC can maintain synchronization with the first REC.