Optimized TQ-MAP: An Adaptive Mapping Mechanism to Guarantee the Coherence of QoS Support from IP to OBS |
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| Authors: | Yang Xiaolong Mao Youju Dang Mingrui Zhang Min Li Lemin |
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| Affiliation: | (1) Optical Communication Institute, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China;(2) the National Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology, Chengdu, 610054, China;(3) Institute of Computer Science and Engineering, University of Electronic Science and Technology, Chengdu, 610054, China |
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| Abstract: | Because of its scalability, the idea of coarse packet classification can be utilized to OBS networks. However, due to the limited number of priorities supported by OBS networks, we usually adopt a many-to-one composite class burst (CCB) assembly technique, e.g., N:1-CCB. In this kind of technique, there are two aspects related to scalable QoS support, i.e., mapping relationship and assembly resource allocation. This paper simultaneously takes the two aspects into consideration, and proposes a novel assembly mapping mechanism, called Optimized TQ-MAP, in which the most important feature is adaptivity. Based on nonlinear programming and differential calculus, it allocates the burst assembling capacity between classes fairly, efficiently and differentially, and matches IP QoS requirement with OBS QoS capacity as possible as it can. The simulation results show that Optimized TQ-MAP is more adaptive, and can efficiently guarantee the coherence of QoS support from IP to OBS. |
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| Keywords: | burst assembly map optical burst switching (OBS) QoS |
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