Patent ID: 7948964

Claim:
A method comprising: receiving an asynchronous radio frequency (RF) message; synchronizing the received asynchronous RF message using a receive count value to provide a synchronized received asynchronous RF message; estimating a receive time of a receive slot boundary in the synchronized received asynchronous RF message; forming an RF transmit message; synchronizing the RF transmit message with the receive time using a transmit count value to provide a synchronized RF transmit message; and transmitting the synchronized RF transmit message, wherein a time delay between occurrence of the receive count value and the transmit count value provides accurate timing for the start of the transmitting the synchronized RF transmit message; down converting the received asynchronous RF message to create a received asynchronous baseband message; synchronizing the received asynchronous baseband message using the receive count value to provide a synchronized received asynchronous baseband message; estimating the receive time of the receive slot boundary in the synchronized received asynchronous baseband message; forming a baseband transmit message; synchronizing the baseband transmit message with the receive time using the transmit count value to provide a synchronized baseband transmit message; and modulating an RF carrier signal using the synchronized baseband transmit message to create the synchronized RF transmit message.