NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A FD/DAMA network architecture for the first generation land mobile satellite servicesA frequency division/demand assigned multiple access (FD/DAMA) network architecture for the first-generation land mobile satellite services is presented. Rationales and technical approaches are described. In this architecture, each mobile subscriber must follow a channel access protocol to make a service request to the network management center before transmission for either open-end or closed-end services. Open-end service requests will be processed on a blocked call cleared basis, while closed-end requests will be processed on a first-come-first-served basis. Two channel access protocols are investigated, namely, a recently proposed multiple channel collision resolution scheme which provides a significantly higher useful throughput, and the traditional slotted Aloha scheme. The number of channels allocated for either open-end or closed-end services can be adaptively changed according to aggregated traffic requests. Both theoretical and simulation results are presented. Theoretical results have been verified by simulation on the JPL network testbed.
Document ID
19900064264
Document Type
Conference Paper
Authors
Yan, T.-Y. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wang, C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cheng, U. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Dessouky, K. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rafferty, W. (JPL Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
COMMUNICATIONS AND RADAR
Meeting Information
GLOBECOM ''89 - IEEE Global Telecommunications Conference and Exhibition(Dallas, TX)
Distribution Limits
Public
Copyright
Other