Title :
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
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;
Conference_Titel :
Computer Communications and Networks, 2000. Proceedings. Ninth International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7803-6494-5
DOI :
10.1109/ICCCN.2000.885470
