Title :
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
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;
Conference_Titel :
Multimedia and Expo, 2002. ICME '02. Proceedings. 2002 IEEE International Conference on
Print_ISBN :
0-7803-7304-9
DOI :
10.1109/ICME.2002.1035797
