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In this paper, we propose SIP-based internetworking scheme between IEEE 802.11e and IEEE 802.16 with MIH functionality. When the vertical handover occurs in the direction from IEEE 802.16 to IEEE 802.11e, the initial QoS may not always be supported due to available network resource shortage, which is caused by different media transmission rates. In this case, negotiation of the traffic flow for the...
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