Based On The Priority Of The Integrated Services Dual Token Ring Lan Mathematical Modeling

Computer network integrates various traffics such as voice, data, video as ATM switching networks and B-ISDN is developing quickly, each type of traffic has different traffic characteristic and requires different quality of service (QoS) requirements. Thus, a proper priority control is needed in order to utilize the network resources efficiently and satisfy the QoS of each traffic.Dual token ring LAN is a new protocol our group brings up several solved problems In earlier stage are as follows:①Description of the protocol;②performance estimate of dual token ring LAN;③Error Analysis for result of performance estimate. Those achievements are reported. This paper adds priority control and carries out performance estimate for the protocol for expending dual ring LAN in integrated service environment to suit integrated service network.In the modeling of integrated services priOrity dual token ring LAN, we set up three priority queues in queuing room, and divide delay time into five types by analyzing the priority system and solving them one by one. Then we get average delay time of different priority queue. The theory innovation in this paper is important for instructing the design and construction of priority dual token ring LAN.