Proceedings ArticleDOI
An Effective Codec Adaptation for MIH Based Vertical Handover in Heterogeneous Wireless Networks
BumWook Kim,SungHoon Seo,JooSeok Song +2 more
- Vol. 2, pp 80-83
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TLDR
The simulation results show that the proposed ACAV outperforms typical codec adaptation mechanism in terms of throughput and delay by determining a proper codec for the target network.Abstract:
The explosive demands of multimedia services have been grown up to support delay-sensitive applications, e.g., VoIP and streaming using codec. When a mobile node (MN) moves across different types of networks, the codec should be effectively adapted according to the significant change of network condition, i.e., throughput and delay. Therefore, in this paper, we propose a codec adaptation for vertical handover (ACAV), aiming not only to increase throughput but also to decrease delay at MNs. Using media independent information service (MIIS), the ACAV is able to proactively estimate network conditions of the target network then determine a proper type of codec for on-going multimedia services. The simulation results show that the proposed ACAV outperforms typical codec adaptation mechanism in terms of throughput and delay by determining a proper codec for the target network.read more
Citations
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Proceedings ArticleDOI
A survey of seamless vertical handoff schemes for Wi-Fi/WiMAX heterogeneous networks
E. Prince Edward,V. Sumathy +1 more
TL;DR: This paper has reviewed the various seamless handoff schemes for vertical handoff between Wi-Fi and WiMAX networks at different layers and compared the schemes based on different criteria viz., handoff latency, packet loss, to provide a better QoS in real-time user scenarios.
Proceedings ArticleDOI
Enhanced vertical handover based on 802.21 framework for real-time video streaming
TL;DR: A novel middleware architecture is presented in order to support multimedia services across inter-technology nodes in a seamless manner and with minimum perceived QoS degradation, based on the Media Independent Handover (MIH) framework.
Enhanced vertical handover based on 802.21 framework for real-time video streaming
TL;DR: The simulation results carried out with the NS-2 tool parametrized for supporting MIH functionality and H.264 encoded video traffic, have shown significant improvement both in video QoS in term of PSNR and thenetwork throughput, during WiFi to UMTS handover, under the proposed scheme.
References
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The Session Initiation Protocol (SIP) UPDATE Method
TL;DR: This specification defines the new UPDATE method for the Session Initiation Protocol (SIP), which allows a client to update parameters of a session but has no impact on the state of a dialog.
Proceedings ArticleDOI
SIP Based End-to-End QoS Negotiation Scheme for MIH
TL;DR: SIP-based internetworking scheme between IEEE802.11e and IEEE 802.16 with MIH functionality, which can handle not only multimedia sessions, but also end-to-end QoS setup for each multimedia session is proposed.