Title :
Performance evaluation of the DOCSIS 1.1 MAC protocol according to the structure of a MAP message
Author :
Cho, Sung-Hyun ; Kim, Jae-Hyun ; Park, Sung-Han
Author_Institution :
Dept. of Comput. Sci. & Eng., Hanyang Univ., Ansan, South Korea
Abstract :
In the Data Over Cable Service Interface Specification (DOCSIS) RFI v1.1, the control message, called MAP, is used to schedule the uplink radio frequency between the cable modem (CM) and the cable modem termination system (CMTS). We find out the appropriate MAP size and the optimum ratio between contention slots and grant slots in a MAP through computer simulations. To assess the performance of DOCSIS RFI v1.1 the Common Simulation Framework (CSF) is used. According to the simulation results the throughput and delay show best performance and the best choice for the number of contention slots may be six when the MAP size is 2 msec. The goodput for the upstream channel capacity is found to be about 58%
Keywords :
access protocols; channel capacity; delays; digital simulation; modems; network interfaces; radio links; telecommunication cables; telecommunication network management; Common Simulation Framework; DOCSIS 1.1 MAC protocol; DOCSIS RFI v1.1; Data Over Cable Service Interface Specification; MAC management message; MAP message structure; RFI v1.1; cable modem termination system; computer simulations; contention slots; delay; goodput; grant slots; interface protocols; performance evaluation; simulation results; throughput; uplink radio frequency; upstream channel capacity; Communication cables; Computational modeling; Computer simulation; Control systems; Media Access Protocol; Modems; Processor scheduling; Radio control; Radio frequency; Radiofrequency interference;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937099
