Title :
Performance of a knockout switch for multimedia satellite communications
Author :
Le-Ngoc, Tho ; Bui, Tien Hy ; Hachicha, Mohamed
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
This paper investigates the performance of a multiple-beam satellite communications system using an on-board knockout switch to support multimedia services. Aggregate voice or video traffic is modeled as a 2-state Markov modulated Poisson process (MMPP) while two models for aggregate data traffic, MMPP and Pareto-modulated Poisson process (PMPP), are used to examine the effects of traffic burstiness and long-range dependent behavior. Multiple-frequency time division multiple access (MF-TDMA) is used on the uplink in conjunction with a dynamic capacity allocation scheme. Higher priority is given to voice, and video realtime traffic to avoid delay variation. An on-board downlink queue for jitter-tolerant data is provided to achieve high statistical multiplexing gain. Simulation results show that packet loss due to the knockout contention scheme is much lower than that due to the limited capacity on the uplink and downlink. This makes the knockout architecture attractive for on-board switching to achieve low complexity
Keywords :
Markov processes; Poisson distribution; multimedia communication; packet switching; queueing theory; satellite communication; telecommunication traffic; time division multiple access; 2-state Markov modulated Poisson process; Pareto-modulated Poisson process; aggregate data traffic; aggregate video traffic; aggregate voice traffic; dynamic capacity allocation; jitter-tolerant data; knockout contention scheme; knockout switch; long-range dependence; multimedia satellite communications; multiple-beam satellite communications system; multiple-frequency time division multiple access; on-board downlink queue; on-board packet switching; packet loss; simulation results; statistical multiplexing gain; traffic burstiness; Aggregates; Artificial satellites; Communication switching; Delay; Downlink; Frequency; Multimedia communication; Multimedia systems; Packet switching; Quality of service; Satellite communication; Switches; Time division multiple access; Traffic control;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.644567
