KEYWORDS: Multiplexing, Internet, Forward error correction, Satellites, Data communications, Global system for mobile communications, Standards development, Operating systems, Local area networks, Environmental sensing
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.
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