Proc. SPIE. 4396, Battlespace Digitization and Network-Centric Warfare
KEYWORDS: Internet, Satellites, Multiplexing, Local area networks, Operating systems, Forward error correction, Data communications, Environmental sensing, Standards development, Global system for mobile communications
Current tactical communication networks consist of subnetworks of different types. Therefore a common network protocol has to be used for the transmission of data in such a heterogeneous network. Since some time there is the need for multiplexed transmission of time-critical and conventional data within a heterogeneous network. In this paper we discuss the problem of multiplexed transmission of time-critical and of conventional data using a common standardized network protocol. Most of the tactical subnetworks are of low or medium transmission speed and guarantee a fixed transmission bandwidth at the access point. A mechanism is described which transmits time-critical data in such a type of subnetwork using a connectionless transport and a connectionless network protocol. The current transmission of conventional data using a connection oriented transport protocol and the same connectionless network protocol is assumed to be of lower priority, it is scheduled in a way to fill the remaining capacity, which has not been reserved for the transmission of time-critical data. Satellite- as well as HF-links are taken into account.