Modeling the contention mechanism of DOCSIS in HFC networks
Journal
Proceedings - IEEE Symposium on Computers and Communications
Journal Volume
2
Pages
798-803
Date Issued
2004-07
Date
2004-07
Author(s)
Chang, Kai-Chien
Abstract
The Hybrid Fiber Coax (HFC) network is a widely-used technology of broadband access networks to the home. The Data-Over-Cable Service Interface Specifications (DOCSIS) designed by the Multimedia Cable Network System Partners (MCNS) is the de facto standard in the cable industry. This paper studies the contention effect of DOCSIS in HFC networks. In particular, we focus on the performance of TCP. We develop a Markov model to estimate the probability of a CM transmitting a request in a randomly selected mini-slot. Based on the derived request transmission probability, the mean access delay for TCP transfers is calculated. We also conduct simulations via Network Simulator version 2 (ns-2) to validate the analysis.
Other Subjects
Cable television systems; Coaxial cables; Computer simulation; Interfaces (computer); Markov processes; Mathematical models; Modems; Multimedia systems; Hybrid fiber coax (HFC) networks; Media access control (MAC); Multimedia cable network system partners (MCNS); Random access channel; Broadband networks
Type
journal article
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