Dynamic bandwidth allocation for the HFC DOCSIS MAC protocol

Author

Droubi, Mamdouh ; Idirene, Nasser ; Chen, Charles

Author_Institution

AT&T Bell Labs., Holmdel, NJ, USA

fYear

2000

fDate

2000

Firstpage

54

Lastpage

60

Abstract

DOCSIS (Data Over Cable Service Interface Specifications) is the new specification for data transmission over the HFC (hybrid fiber/coax) networks. In the DOCSIS media access control (MAC) layer, the headend or CMTS (cable modem termination system) controls transmissions in the upstream direction using a centralized reservation-based approach, and is also responsible for downstream transmissions. We explore mechanisms for delivering quality of service (QoS), in the upstream and downstream directions. We propose a CMTS architecture and study the performance of the bandwidth allocation mechanisms using a model which we implemented on the OPNET Common Simulation Framework provided by CableLabs

Keywords

access protocols; bandwidth allocation; data communication; hybrid fibre coax networks; quality of service; telecommunication traffic; CMTS; CableLabs; DOCSIS; Data Over Cable Service Interface Specifications; HFC; MAC protocol; OPNET Common Simulation Framework; QoS; cable modem termination system; centralized reservation; downstream transmission; dynamic bandwidth allocation; headend; hybrid fiber/coax networks; media access control; performance; quality of service; upstream transmission; Access protocols; Channel allocation; Coaxial cables; Communication cables; Data communication; Hybrid fiber coaxial cables; Media Access Protocol; Modems; Optical fiber cables; Quality of service;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications and Networks, 2000. Proceedings. Ninth International Conference on

Conference_Location

Las Vegas, NV

ISSN

1095-2055

Print_ISBN

0-7803-6494-5

Type

conf

DOI

10.1109/ICCCN.2000.885470

Filename

885470