Abstract
The continuous increase of mobile data traffic calls for the design of energy-efficient content distribution mechanisms, to be incorporated in the fifth generation of mobile networks, 5G. One of the biggest concerns of the companies and the research community is to reduce the energy consumption in both the user equipments (UEs) and the network equipment. In this article, we present a novel content distribution framework called Network-Coded Cooperative (NCC) Networks, which benefits from the interplay between mobile clouds (MC) and Random Linear Network Coding (RLNC) to reduce the overall energy consumption in the devices that take part in the communication. This novel framework leads to reduced energy consumption by offloading the cellular interface to a link with greater energy efficiency, for instance, WiFi, within the mobile small cell. We evaluate the performance of our framework analytically and in practical implementation (i.e., testbed) in terms of throughput, energy savings, packet decoding ratio, latency, and synchronicity. In comparison to the conventional content distribution system, for the case of four users, the analytical model and the testbed implementation show energy savings of more than 12% and 8%, respectively. Furthermore, network usage is reduced, losses are neutralized, and the content is synchronously distributed to all users.
Highlights
As a new mobile generation unfolds, new systems, structures, devices, and protocols are designed to match user’s and company’s expectations
We observe that smaller mobile clouds (MC) need to send more coded transmissions than bigger ones if high reliability is needed, due to the fact that the frequency of transmissions in the MC phase increases with N
We cannot know the real y unless we take a snapshot of the system at a specific point in time, but we can conclude that the real y is upper bounded by ymn ax
Summary
As a new mobile generation unfolds, new systems, structures, devices, and protocols are designed to match user’s and company’s expectations. The fifth generation of wireless networks (5G) presents a new networking paradigm where a massive number of mobile devices are connected anywhere and anytime. It has been reported by Cisco [2] that mobile data traffic will increase sevenfold between 2017 and 2022, reaching 77.5 exabytes per month by 2022. The expected number of connected and connected devices will increase in the years. During this time, technologies such as the Internet of Things (IoT) and Wireless Sensor Networks (WSN) will dominate the user’s services with smartphones, tablets, machines, and sensors. In order to carry this increase in mobile traffic, micro, pico, and femtocells base stations are
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