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Scheduling Delay Minimization for Non-UGS Data in Multi-Channel HFC Network

Wei-Tsong LEE, Kuo-Chi CHU, Kun-Chen CHUNG, Jen-Yi PAN, Pau-Choo CHUNG

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Summary :

The multi-channel Hybrid Fiber Coaxial (HFC) network is essentially a shared medium with multi-channels. Its operation requires the use of a scheduling algorithm to manage the data transmission within each channel. The Data-Over-Cable Service Interface Specification (DOCSIS) protocol is an important standard for HFC networks. Since this protocol does not explicitly specify the scheduling algorithm to be used, many alternative algorithms have been proposed. However, none of these algorithms are applicable to the scheduling of non-Unsolicited Grant Service (UGS) data in multi-channel HFC networks. Accordingly, the present study develops a multi-channel scheduling algorithm which optimizes the scheduling delay time of each transmitted non-UGS request. This algorithm manages the amount of data transmission in each upstream channel according to the overall network load and the bandwidth available in each channel. This study constructs a mathematical model of the algorithm and then uses this model as the basis for a series of simulations in which the performance of the scheduling algorithm is evaluated.

Publication
IEICE TRANSACTIONS on Communications Vol.E88-B No.2 pp.623-631
Publication Date
2005/02/01
Publicized
Online ISSN
DOI
10.1093/ietcom/e88-b.2.623
Type of Manuscript
PAPER
Category
Fiber-Optic Transmission for Communications

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