Abstract
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.
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This paper is an extended version of the paper “Extending Software Communications Architecture for QoS Support in SDR Signal Processing” that appeared in the 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications.
Jaesoo Lee received the B.S. degree in electrical engineering from Seoul National University, Korea, in 2001. He is now a Ph.D. candidate at the School of Electrical Engineering and Computer Science of Seoul National University. He is also a member of Real-Time Operating Systems Laboratory at Seoul National University. His research interests include embedded/real-time operating systems, compiler optimization techniques, low-power computing, and component based software development.
Saehwa Kim received the B.S. and M.S. degrees in electrical engineering from Seoul National University, Korea, in 1997 and 2000, respectively. She is currently a Ph.D. candidate at the School of Electrical Engineering and Computer Science of Seoul National University. She is also a member of Real-Time Operating Systems Laboratory at Seoul National University. Her current research interests include embedded software development methodology, real-time object-oriented modeling, embedded middleware, and real-time operating systems.
Jiyong Park was born in Daegu, Korea on November 26, 1979. He received the B.S. degree in electrical engineering from Seoul National University, Korea, in 2002. He is currently a Ph.D. candidate at the School of Electrical Engineering and Computer Science of Seoul National University. He is also a member of Real-Time Operating Systems Laboratory at Seoul National University. His current research interests include customizable software development, aspect-oriented programming, and embedded real-time operating systems.
Seongsoo Hong received the B.S. and M.S. degrees in computer engineering from Seoul National University, Korea, in 1986 and 1988, respectively. He received the Ph.D. degree in computer science from the University of Maryland, College Park, in 1994. He is currently an associate professor of School of Electrical Engineering and Computer Science at Seoul National University. His current research interests include embedded real-time systems design, real-time operating systems, embedded middleware, and software tools and environment for embedded real-time systems. He has served as a general co-chair of IEEE RTCSA 2006 and CASES 2006 and as a program committee co-chair of IEEE RTAS 2005, RTCSA 2003, IEEE ISORC 2002, and ACM LCTES 2001. He has served on numerous program committees including IEEE RTSS and ACM OOPSLA. He is currently a member of the IEEE and ACM.
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Lee, J., Kim, S., Park, J. et al. Q-SCA: Incorporating QoS support into software communications architecture for SDR waveform processing. Real-Time Syst 34, 19–35 (2006). https://doi.org/10.1007/s11241-006-6739-5
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DOI: https://doi.org/10.1007/s11241-006-6739-5