A scheduling algorithm with QoS support services in HFC

Wang Zhigang; Liu Lichuan; Li Lemin; Sun Hairong

Volume 24 Issue 6

Jun. 2002

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Article Navigation > Journal of Electronics & Information Technology > 2002 > 24(6): 721-725

Wang Zhigang, Liu Lichuan, Li Lemin, Sun Hairong . A scheduling algorithm with QoS support services in HFC[J]. Journal of Electronics & Information Technology, 2002, 24(6): 721-725.

Citation:

Wang Zhigang, Liu Lichuan, Li Lemin, Sun Hairong . A scheduling algorithm with QoS support services in HFC[J]. Journal of Electronics & Information Technology, 2002, 24(6): 721-725.

Wang Zhigang, Liu Lichuan, Li Lemin, Sun Hairong . A scheduling algorithm with QoS support services in HFC[J]. Journal of Electronics & Information Technology, 2002, 24(6): 721-725.

Citation:

Wang Zhigang, Liu Lichuan, Li Lemin, Sun Hairong . A scheduling algorithm with QoS support services in HFC[J]. Journal of Electronics & Information Technology, 2002, 24(6): 721-725.

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A scheduling algorithm with QoS support services in HFC

Received Date: 2000-07-28
Rev Recd Date: 2001-04-12
Publish Date: 2002-06-19

Abstract

Abstract

To support different QoS services in HFC, the CMTS scheduling algorithm should be analyzed carefully. However, in the most important standard-MCNS DOCSIS 1.1, no specific scheduling is prescribed, and many papers have discussed it with modified First Come First Service(FCFS). In this paper, a scheduling algorithm with QoS support-PDBQ is introduced. It distributes the priority of services by the different used bandwidth of different services. The influence of piggyback to throughput is also discussed, the performance of this algorithm is illustrated by simulation results. A method of improving link bandwidth utilization is presented in the typical delay-sensitive service of IP telephony.

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References(1)

References

MCNS Consortium, Data-Over-Cable Interface Specifications Radio Frequency Interface Specificaion, 1998, SP-RFIv1.1-D01-981214.[2]N. Golmie, G. Pieris, S. Masson, D. Su, An MAC protocol for HFC networks: Design Issues and Performance Evaluation, Computer Communications, 1997, 20(9), 1042-1050.[3]V. Sdralia, C. Smythe, et al., Performance characterisation of the MCNS DOCSIS 1.0 CATV protocol with prioritised first come first served scheduling, IEEE Trans. on Broadcasting, 1999,45(2), 196-205.[4]Ying-Dar Lin, et al., Allocation and scheduling algorithms for IEEE 802.14 and MCNS in hybrid fiber coaxial networks, IEEE Trans.[J]. on Broadcasting.1998,44:427-[5]P. Tzerefos, V. Sdralia, et al., Delivery of low bit rate isochronous streams over the DOCSIS 1.0 Cable television protocol. IEEE Trans. on Broadcasting, 1999, 45(2), 206-213.

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