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International Conference of China Communication and Technology (ICCCT 2010 E-BOOK)

Nan'ning,China,10.9-10.10,2010

ISBN: 978-1-935068-52-5 Scientific Research Publishing, USA

E-Book 454pp Pub. Date: October 2010

Category: Computer Science & Communications

Price: $80

Title: A Game-Theoretic Strategy for Dynamic Scheduling and Shaping of EPON OLT Forwarding
Source: International Conference of China Communication and Technology (ICCCT 2010 E-BOOK) (pp 351-354)
Author(s): Bo Wang, State Key Lab of Optical Communication & Network, Wuhan Research Institute of Post and Telecommunication, Wuhan, China
Ai-guo Wang, Microelectronics Division, Fiberhome Telecommunication Technology, Co., Ltd, Wuhan, China
Abstract: In conventional forwarding mechanism of an EPON OLT, queue scheduling and port shaping are considered as two separated functions, which results in that scheduled traffic flows may be discarded for the bandwidth exceeding shaping port availability. Consequently, the bandwidth ratio obtained in practical is not in accordance with the configured value. Besides, static configuration for scheduling weight is not capable of guaranteeing QoS of differentiated classes of service as the traffic flows would change with user’s demand and network performance at any time. This paper proposes two modifications to improve their performance. For one thing, an integrated scheme connecting scheduling and shaping is proposed to enable excessive flows delayed to be scheduled till port bandwidth recovers through new added tokens. For another, a dynamic scheduling strategy based on time interval and bankruptcy game theory is exploited to configure weights with the change of flows in each queue. Numerical study is presented to demonstrate the performance of the strategy.
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