WiMAX QoS: Service Flow Management


  • Nuno Rodrigues, Instituto Superior Técnico, Technical University of Lisbon, Portugal

Source: M.Sc. Thesis, Instituto Superior Técnico / Technical University of Lisbon, September, 2008


Keywords: WiMAX, Quality of Service, Dynamic Management


Providing Quality of Service (QoS) to clients from the access to the core network is possible with an 802.16 based access network. For this purpose, it is proposed the use of the Session Initiation Protocol (SIP) for signaling of client's QoS requirements. These requirements are processed by a modified SIP Proxy and sent to a Broker in the access network. This broker dynamically provisions connection requests from clients and, if necessary, communicates with the core Broker, so that a mapping between QoS paradigms of both networks is accomplished. This mapping allows that the QoS characteristics are maintained from the access to the core network.
The prototype's performance tests show that dynamically provisioning connections in the access network can be accomplished in a time-window smaller than 100 ms. This time window is a reasonable price to pay for dynamic configuration of QoS-enabled connections for the access network.

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