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The 4.1 version of Bluetooth Low Energy (BLE) specification introduced the support of scatternet topology. As a result, the range limit of the technology is no more present, which enables the creation of extensive, and complex network applications. However the modifications were done only in the lower layers, leaving the Attribute Protocol (ATT), and the Generic Attribute Profile (GATT) layers untouched,...
Optimization of wireless smart metering systems requires an entirely different approach compared to traditional communication networks. For devices operating without external power supply energy efficiency is a key factor, because it will determine the duration of operation time without external intervention. The data packets are less sensitive for delay, hence it is possible to wait for more measurement...
In wireless smart metering optimization for energy efficiency is indispensable, because in case of systems without external power supply, battery life is a key factor regarding the usability of the whole system. Sensor networks are less sensitive for delay, this is why aggregation of packets is possible. The aim of this paper is to determine analytically the amount of meter records to aggregate in...
The bandwidth of cellular mobile systems is remarkably growing with emerging new network technologies. LTE is a key step towards future high speed cellular networks, but large bandwidth on its own does not fulfill the QoS requirements of real- time multimedia connections. It is more important to guarantee the amount of network resources required by real-time VoIP and video connections. In this paper,...
As in recent 3G UMTS networks the number of users is increasing dynamically and the packet-switched data transfer become dominant, the network providers and operators face the increasing complexity of the network management and operation tasks.
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