| 基于两色标记器的协作可调整RED算法 |
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| 引用本文： | 王茜,隆克平,程时端,乐辉华,张润彤. 基于两色标记器的协作可调整RED算法[J]. 北京邮电大学学报, 2002, 25(3): 7-11. DOI: 10.3969/j.issn.1007-5321.2002.03.002 |
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| 作者姓名： | 王茜 隆克平 程时端 乐辉华 张润彤 |
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| 作者单位： | 1.北京邮电大学程控交换技术与通信网国家重点实验室,北京 100876;2.Nokia中国研发中心, 北京 100013 |
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| 基金项目： | 国家自然科学基金;69972008; |
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| 摘 要： | 在区分服务网络中提出与两色标记器协作的RED改进算法--协作可调整RED算法(CARED)。通过对两色令牌桶标记器的流量特性进行分析,获得了标记概率与服务实际速率/承诺速率间的定量关系,并根据这个关系调节CARED中的丢包概率基数。为便于实现CARED算法,还提出了一种基于包数的滑动窗口标记概率测量算法(NSWM)。仿真实验证明了CARED算法不仅为区分服务网络提供了有效的拥塞控制功能,同时保障了区分服务的性能要求和公平性。
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| 关 键 词： | 服务质量 区分服务 随机早期丢包 |
| 文章编号： | 1007-5321(2002)03-0007-05 |
| 收稿时间： | 2001-09-17 |
Cooperative Adjusted RED for Two-Color Markers |
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| WANG Qian ,LONG Ke ping ,CHENG Shi duan ,LE Hui hua ,ZHANG Run tong. Cooperative Adjusted RED for Two-Color Markers[J]. Journal of Beijing University of Posts and Telecommunications, 2002, 25(3): 7-11. DOI: 10.3969/j.issn.1007-5321.2002.03.002 |
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| Authors: | WANG Qian LONG Ke ping CHENG Shi duan LE Hui hua ZHANG Run tong |
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| Affiliation: | 1.National Laboratory of Switching Technology and TelecommunicationNetworks, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2.Nokia China R&D Center, Beijing100013, China |
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| Abstract: | A new implementation mechanism of RED, cooperative adjusted RED (CARED), is presented. It cooperates with two color marker to guarantee the fairness between different service classes in diffserv network. The main idea of this scheme is to obtain the quantitative relationship between the actual rate and the committed service rate, on the basis of the marking probability of two color markers, and then adjust the dropping probability of CARED according to this relationship. To implement CARED in diffserv network, a marking probability metering algorithm NSWM is also proposed. Lots of simulations have proved the efficiency of CARED. |
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| Keywords: | quality of service differentiated services random early dropping |
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