Adaptive Slot Allocation in DOCSIS-based CATV Networks
Journal
IEEE Transactions on Multimedia
Journal Volume
6
Journal Issue
3
Pages
479-488
Date Issued
2004-06
Author(s)
Huei-Jiun Ju
Abstract
This paper proposes an adaptive slot allocation mechanism to improve the performance of Transmission Control Protocol (TCP) in DOCSIS-based hybrid fiber coaxial (HFC) networks. The proposed mechanism is comprised of two parts: Fast request transmission (FRT) and long packet deferment (LPD). FRT is designed to handle one-way TCP transfers, while LDP targets two-way transfers. Here "one-way transfers" means all active cable modems perform downloading; while "two-way transfers" indicates some perform downloading and some perform uploading. We analyze the proposed mechanism and conduct simulations using network simulator ns-2 to evaluate the performance of our mechanism. The results show that the proposed mechanism has better performance in terms of aggregate downstream throughput, access delay, and required buffer size, as compared to the original control mechanism of DOCSIS.
Subjects
Asymmetric network; DOCSIS; HFC; Slot allocation; TCP
SDGs
Other Subjects
Control systems; Data reduction; Image analysis; Mathematical models; Robustness (control systems); Signal processing; Asummetric network; DOCSIS; Long packet deferment (LPD); Slot allocation; TCP; Network protocols
Type
journal article
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