Enabling end-to-end QoS over hybrid wired-wireless networks

Liqiang Zhang, Sherali Zeadally

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Providing end-to-end parameterized QoS is desirable for many network applications and has received a lot of attention in recent years. However, it remains a challenge, especially over hybrid networks involving both wired networks and wireless access segments (such as IEEE 802.11 Wireless Local Area Networks (WLANs)). The difficulty in achieving such QoS arises mainly because wireless segments often constitute "gaps" in terms of resource guarantee, due to the lack of efficient resource scheduling and management ability over shared wireless media, as well as the lack of an appropriate QoS signaling interface to seamlessly embed these wireless segments into an end-to-end QoS signaling system. In this paper, we consider the scenario where an IEEE 802.11 wireless node wishes to make an end-to-end resource reservation to a remote wired Internet node and vice versa. We propose Wireless Subnet Bandwidth Manager (Wireless SBM), an extension of SBM protocol to WLANs, to provide seamless end-to-end resource reservations. Wireless SBM utilizes the enhanced resource management ability provided by Hybrid Coordination Function (introduced in the upcoming IEEE 802.11e standard) to provide parameterized resource reservation and admission control.

Original languageEnglish
Pages (from-to)167-185
Number of pages19
JournalWireless Personal Communications
Issue number2
StatePublished - Jul 2006


  • End-to-end
  • Hybrid networks
  • Performance evaluation
  • Quality of service
  • Signaling protocols
  • Wireless local area networks

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering


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