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无线mesh中传输速率抖动抑制策略研究 被引量:1
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作者 乐光学 骆丹 +1 位作者 刘建生 李明明 《电信科学》 北大核心 2014年第10期89-98,共10页
通过分析无线mesh网络中节点的抖动行为特征,针对节点因拥塞导致的限速行为提出了抖动抑制策略。当访问节点选择流媒体服务提供节点时,通过预测抖动概率效用函数,选择抖动较低的节点为流媒体服务源端节点;构建节点失效恢复策略,当发生... 通过分析无线mesh网络中节点的抖动行为特征,针对节点因拥塞导致的限速行为提出了抖动抑制策略。当访问节点选择流媒体服务提供节点时,通过预测抖动概率效用函数,选择抖动较低的节点为流媒体服务源端节点;构建节点失效恢复策略,当发生拥塞且预测抖动概率较大时,判定节点失效,启动节点替换机制并实现服务迁移。实验结果表明,该策略能有效抑制通信链路的传输速率抖动,提高网络的服务性能,同时验证了网络中节点抖动的客观存在性。 展开更多
关键词 无线MESH网络 传输速率 抖动和拥塞 邻居选择 失效恢复
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改号业务实现方案分析
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作者 樊宇琦 韩研 +1 位作者 李晓凡 张昊 《电信工程技术与标准化》 2012年第5期74-78,共5页
本文通过对改号业务需求分析,比对现网已实现的类似业务的技术原理,对改号业务的多种实现方案进行了详细的论证和阐述。
关键词 改号业务 一卡多号 离网率 跨区入网服务
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Factors for wireless operators'collusion and competition
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作者 WEN Dan-hui CHEN Rong-bang LU Ting-jie 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2007年第1期61-64,共4页
This article analyses on why China Mobile and China Unicom have chosen price war rather than tacit collusion these years. On the basis of the analysis on factors that influence tacit collusion, and combined with the f... This article analyses on why China Mobile and China Unicom have chosen price war rather than tacit collusion these years. On the basis of the analysis on factors that influence tacit collusion, and combined with the facts of wireless communication market, the author suggests that the market asymmetries, cost asymmetries, and product differentiation are the basic factors, which trigger price competition between the Chinese wireless operators. By constructing a game model based on Chum rate, this article discusses how these factors cause a fight between the operators and how vigorous the price competition will be. At last, the author suggests that to keep vigor in this industry, continuous structural adjustment is essential. Besides, the number portability policies may cause tacit collusion. 展开更多
关键词 chum rate wireless communication collusion market asymmetries cost asymmetries product differentiation
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