摘要: |
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。 |
关键词: 通信网 拥塞控制 可用比特率 多播 ATM网 |
DOI:10.3969/j.issn.1001-893X. |
修订日期:2001-04-11 |
基金项目: |
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Fairness Criterion of Congestion Control for Multicast ABR Service in ATM Networks |
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Abstract: |
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. |
Key words: Communication network,Congestion control,ABR,Multicast connections,Fairness criterion |