A multi-channel cooperative MIMO MAC protocol for wireless sensor networks

Dawei Gong, Miao Zhao, Yuanyuan Yang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

15 Citations (Scopus)


Recently, several multi-channel MAC protocols have been proposed for wireless sensor networks (WSNs) to improve network capacity and boost energy efficiency. In addition, cooperative multiple-input multiple-output (MIMO) technique has been shown to be able to significantly enhance the energy efficiency of WSNs if properly configured. However, these two promising techniques have not been jointly utilized in WSNs. In this paper, we explore such a joint design by proposing a novel MAC protocol for WSNs that takes advantage of both multiple channels and cooperative MIMO. Specifically, sensor nodes in a WSN are organized into clusters and each cluster head selects some cooperative nodes to help forward traffic to or receive from other clusters by utilizing cooperative MIMO technique. For intra-cluster communications, different channels are assigned to adjacent clusters to reduce collisions, while for inter-cluster communications, cooperative MIMO links are scheduled to improve energy efficiency and concurrent transmissions are enabled by assigning different channels to them. We carry out extensive simulations and the results demonstrate that the proposed protocol can significantly increase throughput and improve energy efficiency compared to other schemes. For example, for a WSN with 150 nodes in a 250m x 250m field, with five or more available channels, the protocol can achieve over three times saturated throughput while saving up to 17% energy per bit for inter-cluster communications.
Original languageEnglish
Title of host publication2010 IEEE 7th International Conference on Mobile Adhoc and Sensor Systems, MASS 2010
Number of pages10
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event2010 IEEE 7th International Conference on Mobile Adhoc and Sensor Systems, MASS 2010 - San Francisco, CA, United States
Duration: 8 Nov 201012 Nov 2010


Conference2010 IEEE 7th International Conference on Mobile Adhoc and Sensor Systems, MASS 2010
Country/TerritoryUnited States
CitySan Francisco, CA


  • Channel assignment
  • Cooperative MIMO
  • Medium access control (MAC)
  • Multiple-input multiple-output (MIMO)
  • Wireless sensor networks (WSNs)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture

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