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波分复用光传输网中波长路由算法的研究进展 被引量:6
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作者 许胤龙 陈国良 万颖瑜 《计算机学报》 EI CSCD 北大核心 2003年第11期1409-1423,共15页
光纤正迅速成为主干通信网的标准传介媒质 .随着光学器件的发展 ,使得信号在传输过程中 ,除了在源、汇节点需要光电转换外 ,中间节点可保持光传输 ,这种通信网络叫光传送网 .光传送网中的波分复用技术是将整个光纤的带宽分成多个信道 ,... 光纤正迅速成为主干通信网的标准传介媒质 .随着光学器件的发展 ,使得信号在传输过程中 ,除了在源、汇节点需要光电转换外 ,中间节点可保持光传输 ,这种通信网络叫光传送网 .光传送网中的波分复用技术是将整个光纤的带宽分成多个信道 ,不同的信道可使用不同的波长来同时进行信息传输 ,从而增加了整个网络的带宽 .在光传送网中 ,实现一个通信请求需要建立一条通信路径 ,并为该通信路径所经过的每条链上分配一个波长 ,即所谓波长路由 .该文详细介绍了波分复用光传送网中波长路由算法的研究进展 ,内容包括波长分配算法、网络的信元阻塞率分析、容错和QoS波长路由、多播波长路由、最小化ADM数路由以及基于光或光电连接的并行机模型等 . 展开更多
关键词 通信网 波分复用光传输网 波长路由算法 波长分配算法 NP问题
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Differentiating QoS and Un-conflicting Channel-times lot Allocation Algorithm in WDM
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作者 LI Li-xiu FENG Jin-yuan YANG Qi-hong 《Semiconductor Photonics and Technology》 CAS 2005年第3期150-153,160,共5页
A new effective and reliabl e channel-timeslot allocation algorithm has been proposed, which is applied in WD M optical networks using fiber as their media to allocate the operational reques t. This new algorithm can ... A new effective and reliabl e channel-timeslot allocation algorithm has been proposed, which is applied in WD M optical networks using fiber as their media to allocate the operational reques t. This new algorithm can differentiate the priority of all requests and avoid c onflict and collision in the process of distributing channel and timeslot for th e data waiting for transmission. The method in calculating the best wavelength c hannel and the best timeslot number is simply given. The algorithm is carried o ut in a math language. On the basis of the experiment results, the performance a nd feasibility of the algorithm are analyzed, which prove that the allocation me thod can reach the requirements of an algorithm both in space complexity and tim e complexity . 展开更多
关键词 WDM CHANNEL Timeslot Conflictr Collision Quality of service
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