Needs For the 5th Generation Network and it’s Research
Challenges
Deeksha Srivastava , Deepak Tiwari,
Department of Electronics and Communication Engineering
Raj Kumar Goel Institute of Technology, Ghaziabad (U.P)-INDIA
Abstract:- As the world is growing faster and faster ,there is a need to enable the connectivity for a wide range of applications with new characteristic and requirements, so the capabilities of 5G wireless access must extend far beyond those of previous generation of mobile communication. 5G will be the platform enabling growth in many industries ranging from the IT industry to the car, entertainment, agriculture, and manufacturing industries. 5G capabilities will include massive system capacity i.e. very high data rates, very low latency, ultra high reliability and availability, very low device cost and energy consumption, and energy efficient network. Although in order to fully exploit the potential of this technology, a no. of technical challenges is still needed to be solved.
Introduction to5G:- To meet the ever growing needs for wireless data and services, 5G cellular system are advocating fundamental advances in both utilizing the radio access spectrum efficiently and providing efficient data and service delivery. 5G will be about simplifying things and building efficient flexible system that is about to be hit by the most diverse set of requirements in any wireless generation. 5G will accelerate the development of technologies like IOT and device to device communication. Speed and capacity will be needed to support the communications of potentially billions of wireless devices, from tiny sensor to unnamed aerial vehicles, many of which will connect to each other through internet.
5th Generation Network:- 5G radio access technology will be a key component of the networked society. It will address high traffic growth and increasing demand for high bandwidth connectivity. It will also support massive number of connected devices and meet the real time, high reliability communication needs of mission critical applications and use cases including wearable, smart homes, traffic safety/control, critical infrastructure, industry processes and very high speed media delivery .
3G and 4G technologies have mainly focused on the mobile broadband use case, providing enhanced system capacity and offering higher data rates. This focus will clearly continue in the future 5G era, with capacity and data rates being driven by services such as video.
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Thus, in future wireless access will go beyond humans and expand to serve any entity that may benefit from being connected. This vision often is referred to as “Internet of Things”, “the networked society”, ”Machine to Machine communication “or ”machine centric communications.
Needs for the 5G:-Many applications are envisaged for 5G. These include enhancement to some of the existing 4G use case as well as some new emerging application. High-resolution video(4k,8k), virtual reality, and augmented reality for gaming or other purposes, IOT, wearable devices and mission-critical application for both industrial and commercial purposes amongare these new and emerging applications.
To be enabled, these applications each have specific technical requirement that needs to be addressed through adequate design of the 5G radio interface and to appropriate frequency ranges. Needs for the 5G network rose due to its capabilities it will hold:-
Very high data rates
5G should support data rate exceeding 10 Gbps in specific scenario such as indoor and dense outdoor environments.
Data rates of at least 10 Mbps should be accessible almost everywhere.
Massive system capacity
To handle traffic demands for mobile communication system 5G network must deliver data with much lower cost per bit compared with the networks of today.5G must consume lower energy per delivered bit than current cellular network.
Ultra –High reliability and availability
5G should enable connectivity with ultra high reliability and ultra high availability for critical services such as control of infrastructure and traffic safety.
Very low latency
5G should allow for an application end-to-end latency of 1msor less, although application-level framing requirements and codec limitations for media may lead to higher latencies in practice.
Energy efficient network
Energy efficiency is an important component in reducing operational cost, as well as a driver for better dimensioned node, leading to lower total cost of ownership.
Energy efficiency enables off grid network deployment that rely on medium sized solar panels as power supplies ,thereby enabling wireless connectivity to reach even the most remote areas.
Very low device cost and energy consumption
Low cost, low energy mobile devices have been a key market requirement since the early days of mobile communication. It should be possible for 5G devices to be available at very low cost and with a battery life of several years without recharging.
5G RESEARCH CHALLENGES
Desired unlimited performance:-Future mobile broadband user will expect “unlimited” performance up to multiple Gbps in some cases, and hundreds of mbps generally available, and that while traffic volumes can be as much as 1000 times higher than what we see today .the Internet of things and the large scale introduction of communicating machines will put many diverse requirement on the network in terms of, for example latency, battery consumption ,device cost and reliability.
Internet of things: - the network would allow smart devices to talk to each other via the networks is the concept of IOT. 5G is the first network designed to be scalable, versatile, and energy smart for the hyper connected internet of everything world. These next generation network and standard will need to solve a more complex challenges of combining communication and computing together so intelligence is at your fingertips and available for the machine that make up the internet of things. The 2G network was designed for voice calls, 3G for voice and data and 4G for broadband internet experience. With 5G we’ll see computing capabilities getting fused with communication everywhere so trillion of things like wearable devices don’t have to worry about computing power because computer can do any processing needed.
Machine to machine communication :-there area lot of devices connected around us. Machine to machine communication will be more beneficial when devices that share information areclose to each other . Machine tomachine communication will require a stressable network especially for mobile services.The capacity of mobile network used by machine to machine techologies needs to be able to handle billion of nodes that are expected to be soar in the next couple of years. M-2-M will be a market changing asset in the near future .Today network is not much efficient enough to handlle machine to machine and human based communication and their different communication pattern without drawbacks like latency or delay.For this reason a next level cellular network for mobile communication,featuring hyper connectivityand a larger bandwidth is needed.This will be the next generation of cellular networks, also known as 5G.
Spectrum for 5G:-In order to support increase traffic capacity and to enable the transmission bandwidth needed to support very high data rates, 5G will extend the range of frequencies used for mobile communication .This Includes new spectrum below 6 GHz as well as spectrum in higher frequency bands. To achieve a connected society, 5G service requires access to spectrum in a variety of bands to support the multitude of use cases, including the need to improve the quality of the service offered and to accommodate much wider channel than those in use today. mm Wave radio spectrum, which will be critical for 5G rollout ,has seen a lot of research attention in the last few years and seems to be more promising in future.
CONCLUSION
5G is the next step in the evolution of mobile communication and will be a key component of the networked society. To enable connectivity for a wide range of application and use cases, the capability of 5G wireless access must extend far beyond those of previous generation of mobile network.
These capabilities include very high achievable data rates, very low latency and ultra high reliability.5G access will be realized by the evolution of LTE for existing spectrum in combination with new radio access technologies.5G wireless access need to support massive increase in traffic in an affordable and sustainable way.
Reference
1. Afif Osseiran; Jose F. Monserrat; Patrick Marsch (June 2016). 5G Mobile and Wireless Communications Technology. Cambridge University Press. ISBN 9781107130098. Retrieved 20 July 2016
2. Asadi, Arash; Wang, Qing; Mancuso, Vincenzo (24 April 2014). "A Survey on Device-to-Device Communication in Cellular Networks". Communications Surveys & Tutorials,
3. IEEE Emerging Wireless Technologies; A look into the future of wireless communication – beyond 3G (PDF). SafeCom (a US Department of Homeland Security program). Retrieved 27 September 2013
