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Recently, Long-Term Evolution or LTE for 3G has been introduced to improve service provisioning for mobile network subscribers. This service improvement includes improvements in setup delay and data rates in different services. In this paper, one of the existing architectures, proposed for LTE, is evaluated. Then, probable faults in this architecture and their impacts on network services are investigated...
How to control energy consumption is one of the most important issues for the battery-powered mobile stations in mobile networks. IEEE 802.16e standard proposes an energy saving mechanism that named "sleep mode" for conserving the power of the mobile stations. According to the operating mechanism of the sleep mode for downlink traffic in the type I power saving class, modeling the data frames...
The Guard Channel (GC) scheme is an extensively deployed handover prioritization policy in wireless mobile networks due to its appealing properties of easy implementation and flexible control. Self-similar traffic has been demonstrated to be a ubiquitous phenomenon in modern communication networks and many measurement studies have demonstrated that the call holding times in wireless mobile networks...
We mathematically analyze a sleep mode operation proposed by Samsung for IEEE 802.16 m. The sleep mode operation for downlink traffic is modeled as a 2-dimensional Markov chain. We obtain the power consumption of a mobile station. We show that the power consumption of a mobile station decreases as the sleep cycle increases and the analytical results also match with the simulation results very well.
Call admission control plays a significant role in the provisioning of differentiated Quality-of-Service (QoS) to new calls and handover calls in wireless mobile networks. Due to its cost-effectiveness, the Guard Channel (GC) call admission control scheme has been widely deployed. Existing studies on modelling and analysis of this scheme have been usually focused on the working conditions where both...
The development of reconfigurable and multimode terminals enable service providers to use the excess bandwidth to support services from other networks, at the expense of terminals performing vertical handover when a call is served by another network. The improvement in the performance of such an overlay heterogeneous network is expressed in terms of the increase in capacity while fulfilling each networkspsila...
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