Patent ID: 8165079

Claim:
A method for synchronizing Connection IDentifiers (CIDs) of a first station and a second station in a communication system, the method comprising: sending, by the first station, a first message for requesting an addition of a service flow identified by a connection identifier to the second station; sending, by the second station, a second message which is a response message to the first message, and at the same time, setting a number of a frame where the second message is transmitted as a first start frame number; sending, by the first station, a third message for acknowledging receipt of the second message to the second station, and at the same time, setting a number of a frame where the third message is transmitted as a second start frame number; performing, by each of the first station and the second station, a modulo operation on a frame having the first start frame number or the second start frame number and its succeeding frames using a positive integer for each frame, and detecting a number of a frame where a result value of the modulo operation becomes zero (0); and simultaneously updating CID lists of the first station and the second station at a frame having the detected frame number with regard to a connection identifier of the added service flow.