5G New Radio Architecture and Challenges
One of the key enabling technologies for 5G will be New Radio (NR). 5G NR standardization began in April 2016, with a target commercial release before2020. More recently, in an effort to bring forward 5G benefits, 3GPP determined a work-plan that provides an intermediate milestone for 5G NR Non-standalone(NSA) mode. Targeting the enhanced Mobile Broadband (eMBB) use case, 5G NRNSA has a scheduled function and protocol freeze date of December 2017.
NR is billed as a more capable air interface and will need to operate in both the frequencies below 6GHz and above 24GHz (mmWave) with a frame structure supporting both TDD and FDD, and operation in both licensed and unlicensed spectrum. This paper explores the aims, solutions and technical challenges of 5G NR.
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