Static scheduling of synchronous data flow programs for digital signal processing
IEEE Transactions on Computers
Distributed Scheduling of Tasks with Deadlines and Resource Requirements
IEEE Transactions on Computers
Scheduling and Priority Mapping for Static Real-Time Middleware
Real-Time Systems - Special issue on challenges in design and implementation of middlewares for real time systems
Synchronization protocols in distributed real-time systems
ICDCS '96 Proceedings of the 16th International Conference on Distributed Computing Systems (ICDCS '96)
Dynamic deployment of software defined radio components for mobile wireless internet applications
HSI'03 Proceedings of the 2nd international conference on Human.society@internet
A control-based middleware framework for quality-of-service adaptations
IEEE Journal on Selected Areas in Communications
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The Software Communications Architecture (SCA) defined by Joint Tactical Radio Systems (JTRS) is the de facto standard middleware currently adopted by the Software Defined Radio (SDR) Forum, and is widely accepted as a viable solution to reconfigurable component-based distributed computing for adaptive wireless terminals and base stations. While SDR is heavily involved in real-time signal processing, the current SCA lacks QoS capabilities in terms of both QoS specification and enforcement. In this paper, we propose Q-SCA (QoS enabled SCA) to address this problem. Specifically, we present an application model for SDR waveform software, and then extend the SCA core framework for QoS specification and enforcement. Q-SCA supports QoS capabilities by (1) providing a QoS descriptor that is backward compatible with SCA's original domain profiles, (2) offering services for admission control and resource allocation that are used throughout the application instantiation process, and (3) introducing a mechanism to enforce the result of the resource allocation. We have fully implemented Q-SCA and performed measurements to quantify its run-time performance. Our implementation clearly shows the viability of Q-SCA.