Matches in SemOpenAlex for { <https://semopenalex.org/work/W2186394725> ?p ?o ?g. }
- W2186394725 abstract "The use of fully packet based wireless communications has increased rapidly since the introduction of the IEEE 802.11 standard. In parallel with this trend, demand for using 802.11 networks for real-time applications such as voice and video has also increased. These applications, unlike best-effort data, are delay sensitive and require the provisioning of service differentiation and prioritized access to wireless channels. The research presented in this thesis aims to focus on this requirement, and creates a framework for enhancing real-time application support for mobile users over 802.11 networks. The first problem tackled by the framework is that of traffic interruptions experienced by a mobile terminal during a handover. Due to the limited radio coverage of 802.11 environments (especially indoors), connection disruptions because of the handovers may occur frequently for a highly mobile user. These disruptions can cause noticeable degradation in performance of real-time applications. Our framework eliminates this by achieving seamless handovers through the use of two 802.11 interfaces co-ordinated in a self contained link layer. The second interface performs the handover process while the active one maintains uninterrupted communications. Both interfaces operate transparently to upper layers and conform with the 802.11 standard. When considering the use of two interfaces on a mobile terminal with limited battery life, the issue of power consumption has to be addressed. Although the idling interface only passively scans for surrounding access points, it still consumes valuable energy and reduces the device’s power storage. To minimize power consumption, the idling interface stays in a power saving state until a handover is anticipated. The estimated handover instant needs to be sufficiently early to maintain a seamless handover experience: this is an issue which we investigate with the help of analytical models of signal path loss. The second problem is the dependence of the quality of service on the unpredictably changing shared wireless links which inherently have constrained capacities. In a network offering overlapping coverage, a mobile terminal should ideally handover to an access point capable of supporting and meeting the required quality of service of its application(s). Our framework solves this problem by applying IEEE 802.21 concepts," @default.
- W2186394725 created "2016-06-24" @default.
- W2186394725 creator A5057246996 @default.
- W2186394725 date "2010-01-01" @default.
- W2186394725 modified "2023-09-24" @default.
- W2186394725 title "A Framework for Quality of Service Provision to Delay Sensitive Applications in IEEE 802.11 Dense Cellular Networks" @default.
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