Patent ID: 7664396

Claim:
A 1+1 protection method of service in optical burst switching, OBS, networks, comprising: transferring burst packets bearing service through two risk-independent routes, wherein each of the burst packets transferred through the two routes corresponds to one control packet, and the control packet is provided with a waiting time field for recording the waiting time of the control packet, a sequence number field for recording a sequence number of the burst packet corresponding to the control packet, and a quality loss field for recording a signal quality loss of the control packet; and receiving first, by an intersection node of the two routes, a first control packet with a sequence number field value from either route, and when the intersection node receives a second control packet which is from the other route and has the same sequence number field value within the waiting time of the first control packet, selecting the burst packet corresponding to the control packet with a smaller quality loss field value of the first and second control packets.