Title :
Optimized recovery of DOCSIS networks using reserved persistent ranging
Author_Institution :
Dept. of Comput. Sci., Univ. of Sheffield, UK
Abstract :
Power outage events can severely disrupt digital services over community antenna television (CATV) networks. This paper proposes two schemes for reserved persistent initial ranging of the data over cable service interface specification (DOCSIS) protocol, namely priority and cluster ranging. Both schemes restrain the number of CMs that can compete simultaneously for the acquisition of the upstream channel and minimize the number of idle opportunities, leading to faster recovery of the network. Their employment involves the introduction of a new field in the MAP message and a new cable modem (CM) parameter in the configuration file downloaded from the cable modem termination system (CMTS). Our results show an absolute reduction in the network´s recovery time of up to 42% with an average of 38%
Keywords :
access protocols; cable television; community antenna television; data communication; digital communication; modems; optimisation; telecommunication channels; CATV networks; DOCSIS networks; MAC protocol; MAP message; cable modem termination system; cluster ranging; community antenna television networks; data over cable service interface specification protocol; interactive digital services; power outage events; priority ranging; reserved persistent ranging; upstream channel; Cable TV; Collision mitigation; Communication cables; Computer science; Digital video broadcasting; Helium; Hybrid fiber coaxial cables; Media Access Protocol; Modems; Termination of employment;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965150
