New Radio (NR) is a study item in the 3rd Generation Partnership Project Technical Specification Group Radio Access Network (3GPP TSG RAN) focusing on a new Radio Access Technology (RAT) for the 5th Generation (5G) cellular communications systems. Together with the next generation core network (NextGen Core), NR fulfills requirements set forth by the International Mobile Telecommunications (IMT)-2020 in the International Telecommunication Union (ITU). The IMT-2020 vision for 5G enables a connected society that connects people, things, data, applications, transport systems and cities in a smart networked communications environment. This paper provides an overview of the key design principles and technology components for NR and the main features that distinguish NR from prior RATs developed by the 3GPP.
The 5G system increases the achievable data rate, improves system efficiency and the mobile broadband experience. However, the scope of the 5G extends beyond mere enhancement of mobile broadband.
Enhancing peak and average data rates to improve the user experience for mobile broadband continues to be the most important goal for 5G. Peak data rates as high as 10Gbps or more are estimated for the 5G. In addition, 5G strives to improve the data rate in different types of situations including urban, suburban, and rural environments.
The 5G system utilizes significantly higher frequency bands when compared to previous generations of cellular communications systems. However, the deterioration of the non-line-of-sight conditions and penetration loss at higher frequencies makes communications at these high frequency bands challenging.
Forward capability of NR will ensure smooth introduction of future services and features, while still allowing efficient access of earlier services and wireless devices.
Ofinno’s research and development projects on the New Radio (NR) access technology is currently ongoing. The topics being addressed in the 3GPP RAN1 (Radio layer 1) working group include initial access and mobility procedures, multi-antenna schemes, scheduling and HARQ, mini-slot design, channel coding, modulation duplex and interference management, wide bandwidth operation, NR-LTE coexistence and channel modeling. Two technical reports (TR 38.802 and TR 38.900) related to this study item are being developed in RAN1.
The 3GPP RAN2 working group is also studying the layer 2 aspects of the NR. Topics of discussion include the user plane and control plane architecture for NR, mobility aspects, slicing and LTE operation with next generation core. The outcome of discussions and agreements are included in TR 38.804.
The NR study item in 3GPP RAN3 working group covers the overall network architecture and interfaces between base stations or base station and core network and their related protocols. The discussion areas include overall new RAN architecture and interfaces, network slicing, QoS, tight interworking with LTE, RAN logical architecture for NR, SON, wireless relay, migration aspects and interworking with non-3GPP systems. The TR 38.801 technical report is maintained by RAN3.
Ofinno, with its advanced wireless research team, is well positioned to play an important role in development of various aspects of 5G technology.
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