Is 5G Wireless the future Tech

5G Wireless: Is it the future?
Introduction
Ever since the early part of the 70s decade, the mobile wireless sector has been creating technology, in addition to engaging in technological development and reform. During the last many years, mobile wireless technology has undergone four to five generations of change and progress. Further, the past few years have witnessed a giant leap in telecommunication services across the globe, with roughly six billion cellphone owners worldwide. This paper will delve into the many cellular system generations, namely: 1G – 1st generation, 2G – 2nd generation, 3G – 3rd generation, 4G – 4th generation, and 5G – 5th generation (Kachhavay & Thakare, 2014). Taking into account the swift transformation and acceptance of web connectivity systems, the paper will also attempt at ascertaining whether or not 5G Wireless proves inevitable in our future.
The swift advancement of smartphones and mobile internet has caused exponential growth of existing mobile communication systems’ network traffic. 5G’s associated benefits and drawbacks have been increasingly garnering focus from every societal segment. Network traffic has been unprecedentedly growing, and this growing demand is anticipated to be fulfilled by 5G technologies, in the future (Zhang et al., 2018). Several technologies critical to 5G may offer superior data rates for meeting long- term capacity demands. Novel challenges are linked to 5G- associated field deployment and standardization, including software- outlined wireless network design, internet of things and big data within 5G, resource management, interference mitigation, energy efficiency, spectral efficiency, etc. For supporting 5G and wireless networks of the future, there is a need to study the above technologies in more detail.
Evolution of mobile technologies
Mobile communications have grown in popularity during the past few years on account of swift mobile technology revolution, which, in turn, is on account of an explosion in telecom service users.
i. First Generation (1G)
This concept was first introduced during the 80s, and encompasses analog system (widely recognized as cellphones). 1G entails mobile technologies like MTS (mobile telephone system), Advanced MTS (AMTS), PTT (push- to- talk), and Improved MTS (IMTS) (Patel, Purohit & Shah, 2018). Analog radio signals of 150 MHz frequency are utilized, with modulation of voice calls performed with the aid of the FDMA (frequency division multiple access) method. The drawbacks of 1G include inadequate capacity, bad voice links, absolutely no security, and unreliable handoff, as radio towers played back voice calls, thus rendering them vulnerable to being overheard by unwelcome third parties (Khan and Barman, 2015).
ii. Second Generation (2G)
The same decade (i.e., the latter part of the 80s) also witnessed the introduction of 2G, characterized by 64 kbps speed, 30- 200 KHz bandwidth, and Short Message Service (SMS) capability. 2G employed digital signals to transmit voice. A more advanced version, 2.5G, utilized circuit- and packet- switched domain, offering as much as 144 kbps of data rate (for instance, Code Division Multiple Access (CDMA), Enhanced Data for Global Evolution (EDGE), and General Packet Radio Service (GPRS)) (Khan and Barman, 2015).
iii. Third Generation (3G)
3G banks on Wide Brand Wireless Network for improving clarity. Information is transmitted using packet switching technology, while circuit switching facilitates interpretation of voice calls. In addition to voice calls, 3G encompasses data services, video/ TV access, Global Roaming and other novel services (Patel et al., 2018). 3G’s operational range is 2100 MHz frequency with 15- 20 MHz bandwidth, for speedy internet and video chatting. Its Wide Band Voice Channel capability implies the creation of a global village, as individuals are able to interact with and forward messages to other individuals residing anywhere across the globe.
iv. Fourth Generation (4G)
4G is characterized by 100 Mbps download speeds. Besides offering the same features offered by 3G, 4G also offers services such as MultiMedia Newspapers, increased TV video clarity, and extremely high data transfer speeds (when compared with earlier generations). Long Term Evolution or LTE also comes under 4G technology. It is being improved upon, for the accommodation of rate and Quality of Service requirements for future application, such as improved video chatting, MMS (Multimedia Messaging Service), wireless broadband access, data and voice services, mobile TV, DVB (Digital Video Broadcasting) high- definition TV (HDTV) content, and similar bandwidth- utilizing services (Patel et al., 2018; Khan & Barman, 2015).
v. Fifth Generation (5G)
5G Technology has transformed cellphone usage with its extremely high bandwidth. This unprecedented- value technology encompasses every kind of sophisticated feature that will render it so highly powerful and sought- after in the coming days (Khan and Barman, 2015). 5G users may avail themselves of superfast internet speeds on their desktop or laptop computers by connecting the 5G mobile device to it. 5G technology covers audio/ MP3 playing, camera, video recording, huge phone memory, and superior dialing speeds, among other things. Piconets and Bluetooth technology targeted at the younger generation also come under 5G technologies.
5G Networks
5G networks are extremely quick and dependable. The mobile device sector will experience never- before- seen revolution after 5G’s widespread introduction, with every application and service (e.g., phone calls, gaming, multimedia applications, etc.) to be accessible using a single Internet Protocol. Since this is no novel concept – several million individuals worldwide have wireless technology/ service access – they will not hesitate to jump to 5G networks. Rather, they will eagerly seek an affordable 5G data pack (Khan and Barman, 2015). User trust must be won by telecom and technology companies for developing a long- run, positive relationship and reinforcing their market position. For effectively competing with, and replacing, the older wireless technologies that are currently circulating the market, it is imperative for 5G to offer ‘something more’ or ‘something different’. Most new 4G smartphones are incorporating advanced mp3 player, camera, and telephony features. 5G will work to better the features of phone gallery, multimedia apps, and messenger already offered by 4G technologies.
The need for 5G technology
Certain shortcomings and the lack of a few functions within the extant system give rise to the need to develop a more advanced system (next generation). This section will address a few deficiencies and functionalities within even the most advanced and latest 4G technologies.
Essentially, 4G technologies involve a combination of multiple networks and technologies. They assimilate a number of extant and upcoming wireless technologies for guaranteeing free and smooth movement from a particular technology to the next (Singh, Bisht & Prasad, 2017). They are able to support a data range of 100 Mbps in wide- area, full- mobility coverage, as well as 1 Gbps in local- area, low- mobility coverage. 4G networks incorporate every access technology, application and service limitlessly for wireless run- through over a wire line with the use of IP address. However, 5G will be able to bring to users the ideal practical wireless or World Wide Wireless Web (WWWW). This concept originates from 4G technology. With regard to 4G’s operation, in spite of the previously- mentioned LTE being capable of proving advantageous to specific individuals, groups, or other entities (when it comes to offering an extensive array of sound wireless communications technology), it is essentially meant for commercial use; this means it is not suited to the layman’s purpose of mostly making voice/ video calls or downloading files from the internet. This is the key reason underlying 5G development (Singh et al., 2017). In addition to all of the other advantages associated with 4G technology, 5G’s most salient element is its user- orientation, as opposed to operator- or service- orientation. 5G puts its users first, above all other aspects, in comparison to other extant mobile technologies. Hence, some of its features include lower traffic fees, great speeds, security, storage and AI (artificial intelligence), all of which are key reasons underlying 5G technology development. Moreover, 5G technologies are expected to offer extremely high bandwidth as well as cover every complex features that will ensure its market dominance in the forthcoming days. The key features that guide 5G technological development and a shift towards it from the prior 4G include:
· Security;
· Data Encryption;
· Billing and Charging;
· Multi- Mode User Terminal;
· Application Level Attack;
· Device- Device Communication; and
· Choice of ideal network among many wireless communications systems on hand
5G mobile network architecture
Fig. 1 below is an illustration of a system model which depicts a network infrastructure design for a 5G mobile phone system; it is an all- IP based mobile and wireless network interoperability model, with the system comprising of the following components: one user terminal that plays a pivotal part within the novel architecture, and several separate, self- supporting radio access technologies (RATs). In individual terminals, every RAT is perceived to be an IP connection to the external Internet realm. But different radio interfaces ought to be present for individual RATs within a mobile terminal (Aggarwal, 2018). If, for instance, we desire access to 4 distinct RATs, there will arise a need for 4 distinct access- specific mobile terminal interfaces, and for their simultaneous activation; the objective will be ensuring functionality of this architecture.


Figure 1: 5G Mobile Network Architecture. Adapted from Kachhavay & Thakare (2014).
The initial two levels of the OSI (Open Systems Interconnection) model, namely, physical and data- link – define radio access technology that facilitates Internet access essentially using Quality of Service support mechanisms; this further relies on access technology (for instance, Worldwide Interoperability for Microwave Access (WiMAX) and 3G clearly have Quality of Service support; on the other hand, Wireless Local Area Network (WLAN) doesn’t). The Network or IP layer constitutes the next layer (i.e., either version 4 (IPv4) or version 6 (IPv6), irrespective of radio access technology) (Khan and Barman, 2015). IP aims at ensuring sufficient control data within the IP header to facilitate appropriate IP packet routing of distinct application connections – i.e., sessions between servers and client applications anywhere on the web; packet routing ought to be based on preset usage policies.

Figure 2: Protocol Layout for the Elements of the Proposed Architecture (Adapted from Kachhavay & Thakare, 2014).
Sockets help achieve client- server application connections on the Internet. These sockets represent endpoints for the flow of data communication. Individual sockets are a type of distinctive amalgamation of local Internet Protocol address with the right local transportation communications port, transport protocol form, target Internet Protocol address, and the relevant target communication port. Given this fact, establishing end- end client- server communication using IP proves crucial in raising the right Internet socket defined uniquely by the client-server application (Kachhavay & Thakare, 2014). In other words, for interoperability between dissimilar networks as well as for vertical radio technology handover, local and target (destination) IP addresses ought to remain fixed and unchanging. This ought to guarantee end- end Internet connection handover transparency, if one or both ends of the connection have a mobile user. For preserving packets’ appropriate layout as well as decreasing or avoiding loss of packets, routing to and from target destination ought to be unique and done by utilizing the very same path. All user- accessible radio access technologies intended for connecting to required radio access has to be presented with the right IP interface (Patzold, 2019). Individual IP interfaces within the terminal are marked by an IP address, with net parameters and mask linked to network- wide IP packet routing.
Within the course of routine inter- system handovers, vertical handover or changing access technology implies local IP address change. Subsequently, changing any socket parameters implies socket change, or closing one socket to open another (or closing one connection to start another). This is an inflexible approach, grounded in modern- day Internet communication. For dealing with the above- mentioned deficit, a novel level is recommended which can manage network access technology abstraction levels to higher protocol stack layers (Patzold, 2019). The layer has a central part to play within the novel architecture. For allowing for applied control and transparency functions or direct packet routing via the most relevant RATs, the design put forward will incorporate a type of control system within networks’ functional architecture. This coordinates perfectly with user terminal to offer network abstraction function as well as established policy- based packet routing. Concurrently, the above control system proves to be a key component with which individual transmission technologies’ quality of service can be potentially ascertained (Patzold, 2019; Kachhavay & Thakare, 2014). This is positioned on the recommended design’s Internet side. By itself, it is able to represent the perfect system for testing access technologies’ qualitative traits, in addition to acquiring a realistic view of the quality one may expect from user applications towards any particular Internet peer or server. Figure 2 above depicts novel level protocol setup in the extant protocol stack that makes up the recommended design.
The level of network abstraction would be achieved through the creation of a number of Internet Protocol tunnels over the IP interfaces that are acquired by means of connecting to terminals through access technologies the terminal can access (in other words, the mobile user). As a matter of fact, tunnels would be created between policy router (i.e., control system) and user terminal; the Policy Router carries out routing tasks on the basis of specified policies. The client’s side will, thus, generate the right quantity of tunnels that are linked to several RATs. Further, the clients will merely establish their local IP addresses that will be developed using client applications’ socket web communication via Internet servers (Kachhavay & Thakare, 2014; Singh et al., 2017). Policies would help decide how Internet Protocol packets get routed by means of tunnels, or by means of selecting the appropriate tunnel; the rules of these policies will get exchanged through a virtual network layer (Layer 3) protocol. In this way, the desired network abstraction to client application at mobile terminal is attained. The procedure of setting up a tunnel that leads to the control system, for policy- based routing, is performed the moment internet protocol connectivity is set up across RAT; this is started by the mobile terminal Virtual Layer 3 Protocol (Singh et al., 2017). The creation of tunnel connections, in addition to their maintenance, is an elementary virtual network level functionality (or Layer 3 abstraction).
Characteristics of 5G technology
· 5G technology offers high resolution to ensure a smart, zealous cellphone for day- to- day use, as well as provide clients with swift Internet access.
· It offers pre- established billing limits for a better contemporary world.
· In addition, 5G technology provides cellphone users with printing operation records.
· It facilitates large volume (i.e. Gigabit) data distribution that maintains ties as close as roughly 65,000.
· It further affords 5G carrier gateways of distribution to never- before- seen levels of maximum stability with no delays.
· The data from 5G data transfer technologies afford more consistent and precise outcomes (Kachhavay & Thakare, 2014).
· The adoption of remote controlled technologies may allow 5G users to enjoy improved clarity and speeds, all within small download/ upload duration.
· Still further, 5G technologies support VPN (virtual private network).
· 5G technology networks offer improved connectivity across the entire globe.
· Lastly, 5G networks are extremely reliable and fast.
Applications of 5G technology
1. A real wireless domain that is no longer limited by problems of zone or access.
1. Wearable devices having artificial intelligence (AI) capabilities.
1. A unified universal standard.
1. Version 6 of IP (IPv6), in which a visiting c/o cellphone IP address gets assigned based on connected network and location.
1. Universal networks that offer universal computing: 5G users may be linked to a number of wireless access technologies at the same time, besides transitioning between them without any glitches; such access technologies may include 2.5 G, 3G, 4G/5G networks, Wireless Personal Area Network (WPAN), Wi-Fi, or other future access technologies (Patzold, 2019). Within the 5G domain, this idea can be built upon further into numerous simultaneous information transfer paths.
1. Smart radio or cognitive radio technologies: Such technologies facilitate efficient sharing of a single spectrum by a number of radio technologies, through the adaptive discovery of unused spectra and adaptation of transmission plan to technology requirements the spectrum shares at present. Such dynamic management of radio resources is attained dispersedly, and is reliant upon software described radio (Kachhavay & Thakare, 2014; Patzold, 2019).
1. HAPS (high altitude stratospheric platform station) systems. 5G communications systems’ radio interface has been suggested by a Korea- based R&D (research and development) initiative whose basis is supposed to be cooperative group relay methods and BDMA (beam division multiple access) technique.
Conclusion
To sum up, the 5G networks of the future are anticipated to help satisfy the divergent quality of service requirements of diverse users. The network slicing technology shows potential when it comes to helping 5G networks offer services that are customized for different users’ special quality of service needs. Spurred by the immense growth in wireless information traffic from a number of application settings, effective plans for resource allocation ought to be implemented for achieving improvements in network resource allotment flexibility as well as 5G networks’ capacity, on the basis of network slicing. On account of 5G application conditions’ diversity, there is a dire need for novel mobility management plans which help ensure smooth and hassle- free handover within network- slicing- grounded 5G systems. It is concluded that the 4G technology-based 5G networks are exceedingly rapid and dependable. They constitute a real wireless domain that will be supported using the following: Large Area Synchronized- Code Division Multiple Access (LAS- CDMA), Multi- Carrier Code Division Multiple Access (MCCDMA), Network- Local Multipoint Distribution Service (LMDS), IPv6, Orthogonal frequency- division multiplexing (OFDM), and Ultra- Wide Band (UWB). 5G technologies provide immense data capabilities, in addition to limitless information broadcast and call volume, concurrently in the newest mobile operating systems. They ought to contribute significantly to the cellphone domain across the globe through its additional features and services. 5G ought to be a more intelligent form of technology which boundlessly connects the whole world. This realm of ubiquitous, uninterrupted communication, data and entertainment access will serve to open novel dimensions to our life, thereby significantly altering our way of living. Hence, 5G Wireless undoubtedly makes up the future of mobile technologies in the world.
























References
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