A call admission control framework for voice over WLANs

Yi Qian, Rose Qingyang Hu, Hsiao Hwa Chen

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In this article a call admission control framework is presented for voice over wireless local area networks (WLANs). The framework, called WLAN Voice Manager, manages admission control for voice over IP (VoIP) calls with WLANs as the access networks. WLAN Voice Manager interacts with WLAN medium access control (MAC) layer protocols, soft-switches (VoIP call agents), routers, and other network devices to perform end-to-end (ETE) quality of service (QoS) provisioning and control for VoIP calls originated from WLANs. By implementing the proposed WLAN Voice Manager in the WLAN access network, a two-level ETE VoIP QoS control mechanism can be achieved: level 1 QoS for voice traffic over WLAN medium access and level 2 QoS for ETE VoIP services in the networks with WLANs as the local access. The implementation challenges of this framework are discussed for both level 1 and level 2. Possible solutions to the implementation issues are proposed and other remaining open issues are also addressed.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalIEEE Wireless Communications
Issue number1
Publication statusPublished - 2006 Feb

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering


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