ATM Network Survivability Enhancement Scheme using Disjoint VP Groups

??? ??????????????? ATM (Asynchronous Transfer Mode) ????????? ??????????????? ?????? ?????? ??? ????????? ????????? QoS (Quality of Service)??? ???????????? ????????? ??? ?????? ?????? ?????? ??? ?????? ????????? ????????????. ????????? ?????? ????????? ????????? ????????? ?????? ????????? ????????? ?????? ????????? ?????? ????????????. ???????????? ???????????? ????????? ?????? VP ?????? (Disjoint Virtual Path Group, DVPG) ??? ???????????? ?????? ????????? (State-independent) ???????????? ????????????. ATM ?????? ?????? ??? ?????? VP ????????? ?????? ?????? ????????? ???????????? ?????? ???????????? ????????? ????????? ?????? VP ?????? ????????????. ?????? ?????? ??? ?????? ???????????? VP ????????? ?????? ????????? ?????? ?????? ?????? ?????? ?????? VP ????????? ?????? ????????? ?????? ??????????????? ?????? ????????? ????????????. QoS??? ????????? ?????? ????????? ????????? ????????? ????????? ????????? ????????? ????????? ????????????, ?????? VP ????????? ????????? ????????? ??????????????????, ?????? ????????? ????????? ????????? ????????? ??? ?????? ????????? ??????