Abstract
Cooperation to access wireless networks is a key approach towards optimizing the use of finite radio spectrum resources in overcrowded unlicensed bands and to help satisfy the expectations of wireless users in terms of high data rates and low latency. Although solutions that advocate this approach have been widely proposed in the literature, they still do not consider a number of aspects that can improve the performance of the users’ connections, such as the inclusion of (1) cooperation among network operators and (2) users’ quality requirements based on their applications. To fill this gap, in this paper we propose a centralized framework that is aimed at providing a “win‐win” cooperation among Wi‐Fi and cellular networks, which takes into account 5G technologies and users’ requirements in terms of Quality of Service (QoS). Moreover, the framework is supported by smart Radio Access Technology (RAT) selection mechanisms that orchestrate the connection of the clients to the networks. In particular, we discuss details on the design of the proposed framework, the motivation behind its implementation, the main novelties, its feasibility, and the main components. In order to demonstrate the benefits of our solution, we illustrate efficiency results achieved through the simulation of a smart RAT selection algorithm in a realistic scenario, which mimics the proposed “win‐win” cooperation between Wi‐Fi and cellular 5G networks, and we also discuss potential benefits for wireless and mobile network operators.
Highlights
The wireless communication sector is witnessing a significant and ongoing increase of devices connecting to the Internet that might lead it to reshape the way services will be provided to clients
This paper is aimed at addressing the following novel contributions: (i) First, we advocate a framework to address the spectrum congestion problem in unlicensed bands, which simultaneously benefits the satisfaction of both Wi-Fi and 5th Generation (5G) users through cooperation between these networks that can be managed by centralized controllers (ii) Secondly, we propose to guarantee a “win-win” cooperation between Wi-Fi and 5G networks through a Radio Access Technology (RAT) selection algorithm implemented in the framework able to orchestrate the connection of the users with the most suitable RAT based on their ongoing application and profile customization gathered in the central controllers
In order to evaluate our RAT selection implemented in the advocated cooperative framework, we developed the abovementioned OPNET-based simulator for a network composed of an Software-Defined Networking (SDN) controller, 2 Wi-Fi 802.11n 2.4 GHz Access Points (APs), and 2 5 G gNBs that can belong to different network operators and use numerology μ = 0 and 20 MHz channel bandwidth [28]
Summary
The wireless communication sector is witnessing a significant and ongoing increase of devices connecting to the Internet that might lead it to reshape the way services will be provided to clients. The use of portable computing devices such as smartphones, tablets, and laptops is dramatically increasing, and their popularity is related to the emergence of innovative mobile applications and online services, which are driving the demand for more reliable wireless Anything, Anyone, Anytime, Anyplace (4A) communication connectivity [1]. The 3GPP is currently standardizing New Radio (NR), the air interface of the 5G system [2] It mainly promises data rates of gigabits per second everywhere, significant reduction of latency, increase of system capacity by 100-1000 times over that of the current Long Term Evolution 4th Generation (4G/LTE) standard, and 10-100 times higher density of the connected devices per region [3]. Wireless network operators are challenged to introduce new solutions and mechanisms to Wireless Communications and Mobile Computing optimize the use of the finite radio spectrum resource and, at the same time, to satisfy their clients by providing 4A connections efficiently
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