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Resource sharing between book-ahead (BA) and instantaneous request (IR) reservation often results in high preemption rate of on-going IR calls. High IR call preemption rate causes interruption to service continuity which is considered as detrimental in a QoS-enabled network. A number of call admission control models have been proposed in literature to reduce the preemption rate of on-going IR calls...
In this paper we propose an optimized WLAN MAC protocol for multimedia applications. The proposed MAC protocol consist of 3 main optimizing architectures, trafficsegregation,specificserviceinterval(SI)forvoiceandvideotrafficandsmallercontentionwindow (CW). Traffic segregation segregates real-time traffic from best-effort traffic while specific service interval provides voice and video...
Providing quality of service (QoS) for multimedia applications in wireless local area networks (WLAN) is a very challenging task. This is mainly due to the real-time nature of multimedia traffic such as voice and video applications, that are sensitive to delay and jitter. QoS guarantees for real-time traffic must be imposed in WLAN so as to enable WLAN users to fully benefit from multimedia applications...
Preemption of low priority call connections to accommodate high priority call connections is a widely recommended technique in a multimedia communication network. A preemption policy is required to make decision about which connections to preempt when resource scarcity is experienced. In literature, priority of connection, preempted bandwidth and the number of preempted connections are proposed as...
Book-ahead (BA) reservation, which allows advance reservation of network bandwidth, is an effective technique to provide enhanced functionality for multimedia and distributed applications in, a QoS-enabled network. Introduction of BA reservation disrupts service continuity of on-going instantaneous request (IR) calls when resource scarcity arises. A number of call admission control (CAC) models have...
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