Fast request transmission in DOCSIS-based CATV networks

Author

Ju, Hue-Jiun ; Liao, Wanjiun

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

1

fYear

2002

fDate

2002

Firstpage

377

Abstract

This paper studies the effect of DOCSIS MAC layer on TCP performance in hybrid fiber coax (HFC) networks. We discuss how the DOCSIS MAC mechanism affects bandwidth asymmetry, analyze TCP behavior over DOCSIS MAC layer, and propose a new mechanism called fast request transmission (FRT) to improve TCP performance in HFC networks. We have also conducted simulations using network simulator ns-2 to compare the original control mechanism of DOCSIS with our mechanism. The results show that the proposed FRT mechanism has better performance in terms of aggregate downstream throughput, access delay, and buffer size.

Keywords

access protocols; bandwidth allocation; cable television; hybrid fibre coax networks; telecommunication traffic; transport protocols; CATV networks; DOCSIS; HFC networks; MAC layer; TCP performance; access delay; aggregate downstream throughput; bandwidth asymmetry; buffer size; fast request transmission; hybrid fiber coax networks; ns-2 network simulator; Bandwidth; Channel allocation; Clocks; Coaxial components; Collision mitigation; Delay; Hybrid fiber coaxial cables; Intelligent networks; Performance analysis; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2002. ICME '02. Proceedings. 2002 IEEE International Conference on

Print_ISBN

0-7803-7304-9

Type

conf

DOI

10.1109/ICME.2002.1035797

Filename

1035797