Accession Number : ADA255636


Title :   Multi-Access Strategies for Voice/Data Integration in Heterogeneous Mixed-Media Packet Radio Networks


Descriptive Note : Interim rept. Mar-Nov 1991


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Geraniotis, Evaggelos ; Soroushnejad, Mohsen


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255636.pdf


Report Date : 08 Sep 1992


Pagination or Media Count : 55


Abstract : The problem of voice/data integration in a mixed-media packet radio network employing both ground radio links and SATCOM radio links is investigated. Multi-access strategies are devised to take advantage of different characteristics of both radio channels to better serve the requirements of both traffic types. Code-division multiple-access with movable boundary in the code domain is used in the ground subnetwork to serve the voice traffic and the retransmitted data traffic while framed ALOHA with movable boundary is used on the satellite subnetwork for both data and voice. Based on a Markovian model of the system, a complete analysis of the channel access protocols for both traffic types is given. The performance of the multiple-access schemes used in this mixed-media network is evaluated in terms of voice and data throughput, voice blocking probability, and data delay. It is observed that splitting of retransmission traffic between the satellite and ground subnet may increase the overall data throughput when the voice load is high.


Descriptors :   *COMMUNICATIONS TRAFFIC , *COMMUNICATIONS NETWORKS , *RADIO LINKS , *MULTIPLE ACCESS , REQUIREMENTS , MODELS , ARTIFICIAL SATELLITES , DELAY , BLOCKING , DATA LINKS , VOICE COMMUNICATIONS , RETRANSMISSION , CHANNELS , SPLITTING , RADIO EQUIPMENT , THROUGHPUT , SATELLITE COMMUNICATIONS , PACKETS , BOUNDARIES , INTEGRATION


Subject Categories : Unmanned Spacecraft
      Telemetry
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE