Mobility

A Call Server Integrated Approach for QoS Provisioning of SIP Multimedia Services in 802.11 Wireless Networks

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Executive Summary

In current 802.11 wireless networks, the Quality of Service (QoS) of Session Initiation Protocol (SIP) multimedia services may be affected by other best-effort services. Moreover, the IP/port information of a SIP multimedia service is dynamically allocated and not easily identified. To solve the above problems, this paper proposes a call server integrated approach where the authors assign the high-priority Service Set IDentifier (SSID) to SIP multimedia services and retrieve the IP/port information from the Session Description Protocol (SDP) of SIP signaling messages to recognize the flows of the multimedia services.

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