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5G Perspective

Three wireline network improvements needed for 5G

India has witnessed an unprecedented increase in the consumption of mobile broadband, including video, IoT, and cloud-based services, in the last few years. The ever-increasing numbers of LTE subscribers and the growing popularity of video have led to unprecedented surge in data usage. The government is also adopting a number of initiatives, like Digital India, leading to an increase in the consumption of broadband. In fact, India is now second only to China in terms of internet users, according to Internet and Mobile Association of India (IAMAI).

Our country is set to start its 5G journey, and plans to hold spectrum auction in the coming year. 5G technology facilitates ultra-low latency of less than one millisecond and super high-speed mobile broadband, and is sure to fuel the growth of mobile broadband consumption in the country.

Preparing the network for 5G is going to be very different from previous standards. 5G is not just about changes in radio access networks – it calls for a paradigm shift in the way networks are set up and managed. Contrary to popular perception, the next generation of mobile networks demands a lot of support from wireline technologies.

The wireline infrastructure that connects end-users (man and machine) to access content, residing in data centres, must be ready to support more than 1000 times of more data flowing through it. In India, the wireline networks leave a lot to be desired.

How can wireline networks be modernized to meet the requirement of the new age? There are three areas of scalability, virtualization, and network slicing, which need to be upgraded to support the new requirements.

Scaling the network
5G technology is characterized by extremely high speeds. Huge amounts of data will be produced by IoT sensors, autonomous vehicles, and other applications. The bandwidth required on the wireline networks needs to increase many times over to handle this exponential growth in end-user traffic. Wireline networks need to be easily scalable to efficiently handle the growth in traffic. Fiberization of the networks will be required to prepare the networks for the new and exciting technology concepts, such as smart cities, virtual reality, augmented reality, and more. Further, the service providers can also look at automation and move toward a software-centric and virtualized network to make networks more scalable.

Virtualizing the network for agility and flexibility
Virtualization of radio access network (RAN) will play a crucial role in bringing down the cost of setting up and managing a 5G network. With virtualization, it will be possible for the service providers to reduce cost by simplifying the functions of a cell tower by moving the more sophisticated data processing functions to a central location. The centralized location can then complete the data processing function to ensure better CapEx and OpEx efficiencies. This allows the disaggregation of the software and hardware components of the network. As part of this process, the fronthaul and mid-haul will require new devices, capable of processing common public radio interface (CPRI), enhanced common public radio interface (eCPRI), and radio-over-Ethernet (RoE) protocols.

Slicing the Network
5G will make many innovative use cases possible with the technique of network slicing. With this approach, service providers can meet different and varied requirements for latency, bandwidth, and reliability for different services from the same physical network. It allows them to virtually divide the network into many parts, which can be managed independently as per the different requirement of that particular service.

Service providers can prioritize the network usage with network slicing. For instance, in the case of a disaster, first-responder networks need to be given priority so they are able to carry out rescue missions without network problems. Network slicing allows mobile network operators to guarantee connectivity to them to do this by prioritizing their traffic over other traffic, like social media updates.

As we prepare for 5G, now is the time for service providers to examine their network strategy and consider improvements to wireline infrastructure. The future of Digital India will be realized and new opportunities will be unlocked by 5G and the underlying infrastructure upgrades that support it. 

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