ATM多播ABR业务拥塞控制的公平准则探讨

本文介绍了在ATM网络中多播ABR（Available Bit Rate）业务的基于ER（Explicit Cell Rate）并采用一种新的公平准则的拥塞控制模式，分析并推导出了在既有单播又有多播、实际情况MCR（Minimum Cell Rate）不为零时缓存长度的递推公式，并说明了网络的稳定性。在这种以平准则下，一个连接的ACR（Allowable Cell Rate）与该连接的PCR（Peak Cell Rate）与MCR的差成比例。而且，分支连接的剩余带宽容量被分配给单播连接，网络资源的利用达到最大化。

Fairness Criterion of Congestion Control for Multicast ABR Service in ATM Networks

The authors introduce an explicit-rate based congestion control scheme for multicast available-bit rate service in asynchronous-transfer mode networks which support bandwidth allocation with a new fairness criterion for both the unicast connections case and the unicast-plus-multicast connections case. Specifically, under the new fairness criterion, allowed-cell-rate for a connection is proportional to the difference between peak-cell-rate and minimum-cell-rate of the connection. The effectiveness of the proposed control scheme is confirmed by computer simulations.