Title :
An analysis of a new carrier sensing scheme for undirectional bus CSMA networks
Author :
Vukovic, Ivan N. ; Vastola, Kenneth S.
Author_Institution :
Wireless Data Group, Motorola Inc., Schaumburg, IL, USA
Abstract :
A new carrier sensing scheme for CSMA protocol on unidirectional bus topologies is proposed and analyzed. Several existing networks such as cable TV data networks and the well known broadband Ethernet (IEEE 802.2 10BROAD36) have a unidirectional bus topology. The proposed scheme combines carrier sensing on the inbound and the outbound channels. Distances to the head end are specifically included in our model using space-time techniques. The analysis is carried out for the case of a nonpersistent CSMA protocol. Several load distributions are investigated numerically. A significant increase in throughput is observed, especially when the stations are clustered on the opposite side from the head end. The probability of success for a test packet conditioned on the distance from the head end is calculated. This probability is used to discuss the fairness of the proposed protocol
Keywords :
cable television; carrier sense multiple access; data communication; local area networks; network topology; packet switching; probability; system buses; CSMA protocol; IEEE 802.2 10BROAD36; broadband Ethernet; cable TV data networks; carrier sensing; distance; fairness; head end; inbound channels; load distributions; nonpersistent CSMA protocol; outbound channels; probability; space-time techniques; throughput; undirectional bus CSMA networks; unidirectional bus topologies; Cable TV; Ethernet networks; Multiaccess communication; Network topology; Power cables; Probability; Protocols; Testing; Throughput; Wireless sensor networks;
Conference_Titel :
Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-3250-4
DOI :
10.1109/ICC.1996.541378
