A QoS-aware routing mechanism for multi-channel multi-interface ad-hoc networks

  • Authors:

  • Shinsuke Kajioka;Naoki Wakamiya;Hiroki Satoh;Kazuya Monden;Masato Hayashi;Susumu Matsui;Masayuki Murata

  • Affiliations:

  • Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka 565-0871, Japan;Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka 565-0871, Japan;Systems Development Laboratory, Hitachi Ltd., 292, Yoshida-cho, Totsuka, Yokohama, Kanagawa 244-0817, Japan;Systems Development Laboratory, Hitachi Ltd., 292, Yoshida-cho, Totsuka, Yokohama, Kanagawa 244-0817, Japan;Automotive Business Group, Renesas Electronics Europe GmbH, Gothaer Straíe 18, 40880 Ratingen, Germany;Systems Development Laboratory, Hitachi Ltd., 292, Yoshida-cho, Totsuka, Yokohama, Kanagawa 244-0817, Japan;Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka 565-0871, Japan

  • Venue:
  • Ad Hoc Networks
  • Year:
  • 2011

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Abstract

To accommodate real-time multimedia application while satisfying application QoS requirements in a wireless ad-hoc network, we need QoS control mechanisms. In this paper, we propose a new routing mechanism to support real-time multimedia communication by efficiently utilize the limited wireless network capacity. Our mechanism considers a wireless ad-hoc network composed of nodes equipped with multiple network interfaces to each of which a different wireless channel can be assigned. By embedding information about channel usage in control messages of OLSRv2, each node obtains a view of topology and bandwidth information of the whole network. Based on the obtained information, a source node determines a logical path with the maximum available bandwidth to satisfy application QoS requirements. Through simulation experiments, we confirmed that our proposal effectively routed multimedia packets over a logical path avoiding congested links. As a result, the load on a network is well distributed and the network can accommodate more sessions than QOLSR. We also conducted practical experiments using wireless ad-hoc relay nodes with four network interfaces and verified the practicality of our proposal.