Μελέτη και αξιολόγηση επίδοσης για την εξοικονόμηση ενέργειας σε LTE δίκτυα
Νικολιδάκη, Αικατερίνη Α.
SubjectMobile communication systems ; Wireless communication systems ; Δίκτυα υπολογιστών -- Πρωτόκολλα ; Wireless LANs
In recent years the technology of mobile communications has grown rapidly due to the increasing demands, such as access to Internet services via mobile phones and the demands of better quality of the offered services. This thesis, studies the Long Term Evolution (LTE) technology that is the technology for the 4th generation networks (4G). The 4th generation (4G) is the next generation of wireless communications networks that will replace the existing networks of the 3rd generation (3G) and will provide to users enhanced services with higher access speeds that the previous generation networks fail to offer. In addition to this, the LTE technology will create a global heterogeneous network that will integrate the networks of the 2nd and 3rd generation. The mobile devices that have access to the Internet, such as eReaders, tablet PCs, smartphones and netbooks have strong market demand and for this reason an effort to minimize the energy consumption is ongoing, so the user does not need to recharge the device at regular intervals. Also, it is inevitable that future devices will contain LTE modems other than the common interfaces such as Wi-Fi, Bluetooth or USB, and this creates an urgent need to develop mechanisms and models that will contribute to energy efficiency in mobile devices. The aim of this work is to create a more reliable model using the LTE HARQ/ARQ process and is modeled as a Markov chain for energy savings in LTE modem for mobile devices.