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This paper provides a perspective and brief analysis of the U.S. Government's Department of Defense precedence and preemption (P&P) technical requirements for precedence-based assured service (PBAS) capabilities in the global information grid (GIG). Precedence is the user's indication of the importance of a message. In voice networks, the PBAS capabilities are implemented using multilevel precedence...
Precedence-based assured services (PBAS) is defined in a simple term as "PBAS ensures that when a network is stressed, higher precedence messages will receive their QoS with higher probability than lower precedence messages". PBAS allows messages and traffic flows in the GIG to be processed according to their precedence requirements. This paper introduces some of the functional roles and...
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