Software radio system design for accessing wireless multimedia services

  • Authors:

  • Ming-Chung Tang;R. C. Chang;Wei-Kuan Shih

  • Affiliations:

  • Department of Computer Science, National Tsing-Hua University, 101 Kuang Fu Rd, Sec.2, HsinChu 30043, TAIWAN;Department of Computer Information Science, National Chiao-Tung University, 1001 Ta Hsueh Rd, HsinChu 30050, TAIWAN;Department of Computer Science, National Tsing-Hua University, 101 Kuang Fu Rd, Sec.2, HsinChu 30043, TAIWAN

  • Venue:
  • Information processing and technology
  • Year:
  • 2001

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Abstract

This paper presents a software engineer's perspective for the design and implementation of a software radio (SWR) system. The key technical challenge that we want to address is the architecture design of a software radio system and the QoS control for multimedia processing in this architecture. We propose the component-binding based software radio architecture and the QoS-controllable scheduling mechanism (QSM) in this paper. The component-binding based software radio architecture comprises four parts: the control-flow components, the data-flow components, the reconfigurable binding interface, and the SWR management unit (SMU). The QoS-controllable scheduling mechanism applies imprecise computation techniques for SMU to ensure that time-critical tasks can meet their deadlines and multimedia services can meet their QoS requirements. QSM is coarse-and-fine adjustable. Also, we investigate the k-tasks-look-ahead substitutable check to further enhance the overall schedulability for the on-line scheduler in QSM. By taking advantage of programmability, the proposed system architecture can serve as a flexible platform for supporting the accessing and processing of wireless multimedia services.