Design and analysis of a cooperative multichannel MAC protocol for heterogeneous networks

Jiwoong Lee, Jeonghoon Mo, Tran Minh Trung, Jean Walrand, Hoi Sheung Wilson So

Research output: Contribution to journalArticle

24 Citations (Scopus)


Many incompatible wireless protocols proliferate in unlicensed bands, creating complex coexistence and connectivity problems. If the trend continues, such problems will continue to exist in future unlicensed bands. We take a different approach to spectrum sharing. Instead of proposing a distinct medium-access control (MAC) protocol for each type of application, we propose a family of parameterized MAC protocols called WiFlex, which can be tailored to different application needs, ranging from wireless sensors to media centers. However, these protocols allow communication and spectrum-sharing coordination among different types of devices. We envision this family to be based on a multichannel physical layer. The contributions of this paper include a novel asynchronous split phase (ASP) protocol with dynamic priority support, even in multiple-collision-domain environments. When links are bidirectional, WiFlex resolves the multichannel hidden-node problem, achieving collision-free data exchange in a multihop environment. ASP provides a mechanism for prioritization and fairness. The performance of the protocol is evaluated through analysis and simulation. The coexistence of heterogeneous devices and the support for different applications with high performance are demonstrated.

Original languageEnglish
Article number5484717
Pages (from-to)3536-3548
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Issue number7
Publication statusPublished - 2010 Sep

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Design and analysis of a cooperative multichannel MAC protocol for heterogeneous networks'. Together they form a unique fingerprint.

Cite this