Channel-Aware Multichannel Random Access for Energy-Limited Sensors and MTC Devices

Impact of MTC on Energy and Delay Performance of Random-Access Channel in LTE-Advanced

Machine-Type Communications (MTC) are a rapidly growing technology, which is expected to generate significant revenues to mobile network operators. In particular, smart grid is predicted to become one of the key MTC use cases that involves unattended meters autonomously reporting information to a grid infrastructure. With this research, we consider a typical smart metering MTC application scena...

Self-Tuning Energy-Aware Multichannel (STEAM) Scheduling

Link quality aware channel allocation for multichannel body sensor networks

The openness of indoor WiFi networks makes it prone to spoofing attacks and password sharing, where undesired users may be able to access the network resources. The fundamental reason is that the actual communication range is much larger than the valid authentication range, leaving undesired users the same chance to access the network from invalid authentication range. The existing works exploi...

Dynamic spectrum access for energy-constrained CR: single channel versus switched multichannel

In energy-constrained cognitive radio networks (CRNs), the choice on single channel access versus switched multichannel access is critical for energy saving and sustainable network operation. In this paper, we study and compare the energy efficiency of switched (probabilistic) multichannel access (pMCA) and fixed single-channel access (SCA) in CRNs. In pMCA, a secondary user (SU) switches chann...

Energy-Accuracy Aware Localization for Mobile Devices

Mobile applications often need location data, to update locally relevant information and adapt the device context. While most smart-phones do include a GPS receiver, its frequent use is restricted due to high battery drain. We design and prototype an adaptive location service for mobile devices, a-Loc, that helps reduce this battery drain. Our design is based on the observation that the require...