Dr. Raghu

Abstract:

5G cellular brought about a change in society leading to wireless becoming the primary access to the Internet and business services. While other frequency bands are already implemented, there are many challenges to implement the millimeter wave band and its enormous potential to customers.

This talk will address some of the practical issues of what millimeter wave can provide and yet what are the limitations in terms of design, deployment and operations. This requires a closer look at the Radio Access Network and how to implement millimeter wave band in public networks. Its design, how it will co-exist with the other frequency spectrum in a cellular system are important.

Since 5G and 6G have started to take over the vertical market segments including factory operations network, it is changing many aspects from traditional wired systems. There is considerable expectation that wireless will deliver throughput of several Gbps and in addition reduce the latency (from 100ms of current Internet to 10ms or less in 5G / 6G wireless networks). To address increased throughput and reduced latency expectations, several design parameters must be evaluated. Some of these examples will be illustrated.

In addition to cellular, the public safety network (Police, Fire, EMS, rail and bus operations etc.) have moved over to cellular system and have different requirements. Their requirements are being addressed by 3GPP starting with 4G LTE and now in 5G and 6G and its global impact in emergency communication will be touched upon. Cellular systems bring about higher level of security compared to the current Internet, because security implementation begin at the RAN and move up to higher layers. This will be briefly touched upon.

Biography:

Dr. Krishnamurthy Raghunandan (RAGHU) is Senior Manager in MTA / New York City Transit. His team is responsible for bringing latest wireless technologies into Transit, including piloting new products / systems. Prior to joining MTA, he worked on cellular technology for over a decade in Bell labs, developing products, field trials methods. He worked on development of cellular handsets and infrastructure. Earlier he worked in ISRO on satellite and launch vehicle systems that provide him with a strong background in systems reliability and test methods for space communication systems.

5G cellular is an area that has a lot of expectations from the general public and from engineers within the wireless profession. Raghu was a team leader for Radio Access Network (RAN) in 3GPP standards; he will provide an overview of how new services are being planned with implementation over the radio physical and MAC layers. The presentation covers the RF technology and practical aspects of bringing millimeter waves into homes and offices.

Raghu has bachelors (Univ of Mysore), Masters (IIT Kharagpur) and Research (Univ of Surrey, UK) degrees in Electrical engineering and has several publications and a US Patent. Objective of this talk is to show that there are practical limitations on what can be delivered and when. But cellular system has shown excellent growth that has sustained over many decades now. These will be touched upon during the presentation; the audience get a more realistic view of what to expect and where to focus their research.