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Device-to-Device (D2D) communication can improve spectrum efficiency and link capacity by allowing nearby devices to communicate directly with each other on the licensed frequency bands. However, the interference between D2D users and cellular users on the same resources may decrease the performance of the whole network, and interference management is an indispensable technology. In this paper, an...
We present an explicit adaptive traffic allocation scheme for optimum distribution in heterogeneous networks, where data traffic is broken down into multiple sub-flows, such that the aggregate of these multiple sub-flows at the terminal are merged into the original flow. For simplicity, parallel data transmission through inter-network cooperation is modeled as a sequent M/M/1 queue system. We aim...
Data gathering in a wireless sensor network works in a way that a sink collects data from a large number of sensor nodes. Traditionally, the hop-by-hop transmission is used in this many-to-one communication. In this communication pattern, the closer a sensor node is to the sink, the sooner its energy is exhausted. The nodes close to the sink need to route data packets for farther nodes and thus the...
Long-term evolution (LTE) of the UMTS terrestrial radio access and radio access network is considered to ensure the competitiveness of 3GPP radio-access technology in a longer time frame. To minimize/optimize the user equipment (UE) power consumption, and further to support various services and large amount of data transmissions, a discontinuous reception (DRX) mechanism with adjustable DRX cycles...
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