Accession Number : ADA322407

Title :   SATCOM Sub Network.

Descriptive Note : Professional paper,

Corporate Author : NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s) : Castro, Ceasar R. ; Riley, Andrew

PDF Url : ADA322407

Report Date : AUG 1996

Pagination or Media Count : 12

Abstract : For the Communications Systems Network Interoperability (CSNI) project two different protocols were implemented for the SATCOM subnetworks. The United Kingdom developed a TDMA/Token Ring protocol for SHF SATCOM subnetwork, and the United States developed a Reservation Protocol for UHF SATCOM subnetwork. The U.K. provided two versions of their protocol. One version supports a multiple member subnetwork and is used with the WESTLANT DSCS satellite. Canada, Shape Technical Centre (STC), U.K., and the U.S. formed the members of this subnetwork. The link data rate for this subnetwork is 56 kbps. The second version supports a point-to-point connection and is used with the NATO IV satellite. There are three SHF point-to-point links: STC-Netherlands, STC-Germany, and U.K.-Germany. All the point-to-point links support a link data rate of 64 kbps. There are two UHF SATCOM subnetworks. Both use the same reservation protocol. One subnetwork uses the FLTSAT7 satellite and consists of three nodes: Canada, U.S. at NRaD, and U.S. at NRL. The second subnetwork u1 or 8 satellite and consists of five nodes: Canada, three nodes in the U.K., and the U.S. at NRL. The link data rate for both subnetworks is 9.6 kbps. All the designs adhere to the CSM SNAC External Interface Specification which allows any CSNI subnetwork to attach to any participating CSNI intermediate system. This paper discusses the protocols and how the software is implemented. A discussion of over the air test results is also provided.

Descriptors :   *COMMUNICATIONS NETWORKS, *SATELLITE COMMUNICATIONS, NATO, SPECIFICATIONS, INTEROPERABILITY, TIME DIVISION MULTIPLEXING, ULTRAHIGH FREQUENCY, SUPERHIGH FREQUENCY.

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE