Cross-layer design for efficient resource utilization in WiMedia UWB-based WPANs

Raed Al-Zubi, Marwan Krunz

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Ultra-WideBand (UWB) communications has emerged as a promising technology for high data rate Wireless Personal Area Networks (WPANs). In this article, we address two key issues that impact the performance of a multihop UWB-based WPAN: throughput and transmission range. Arbitrary selection of routes in such a network may result in reserving an unnecessarily long channel time, and hence low network throughput and high blocking rate for prospective reservations. To remedy this situation, we propose a novel cross-layer resource allocation design. At the core of this design is a routing technique (called RTERU) that uses the allocated channel time as a routing metric. RTERU exploits the dependence of this metric on the multiple-rate capability of an UWB system. We show that selecting the route that consumes the minimum channel time while satisfying a target packet delivery probability over the selected route is an NP-hard problem. Accordingly, RTERU resorts to approximate path selection algorithms (implemented proactively and reactively) to find near-optimal solutions at reasonable computational/communication overhead. We further enhance the performance of RTERU by integrating into its design a packet overhearing capability. Simulations are used to demonstrate the performance of our proposed solutions.

Original languageEnglish (US)
Article number8
JournalACM Transactions on Modeling and Computer Simulation
Issue number1
StatePublished - Dec 2010


  • Cross-layer design
  • OFDM-based UWB
  • Packet overhearing
  • Routing
  • Slots reservation

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications


Dive into the research topics of 'Cross-layer design for efficient resource utilization in WiMedia UWB-based WPANs'. Together they form a unique fingerprint.

Cite this