STUDY ON STRATEGY OF DYNAMIC JOINT ROUTING AND RESOURCE ALLOCATION IN LAYERED OPTICAL TRAN

STUDY ON STRATEGY OF DYNAMIC JOINT ROUTING AND RESOURCE ALLOCATION IN LAYERED OPTICAL TRANSPORT NETWORKS

Su Yang;Xu Zhanqi;Zhao Ruiqin;Liu Zengji

【期刊名称】《电子科学学刊（英文版）》 【年(卷),期】2008(025)002

【摘要】A layered network model for optical transport networks is proposed in this paper, which involves Internet Protocol (IP), Synchronous Digital Hierarchy (SDH) and Wavelength Division Multiplexing (WDM) layers. The strategy of Dynamic Joint Routing and Resource Allocation (DJRRA) and its algorithm description are also presented for the proposed layered network model. DJRRA optimizes the bandwidth usage of interface links between different layers and the logic links inside all layers. The simulation results show that DJRRA can reduce the blocking probability and increase network throughput effectively, which is in contrast to the classical separate sequential routing and resource allocation solutions. 【总页数】8页(166-173)

【关键词】Layered network model; Optical transport network; Joint routing and resource allocation; Network throughput 【作者】Su Yang;Xu Zhanqi;Zhao Ruiqin;Liu Zengji

【作者单位】State Key Lab. of Integrated Service Networks, Xidian