2020 | OriginalPaper | Buchkapitel
5G Fundamental Air Interface Design
verfasst von : Wan Lei, Anthony C. K. Soong, Liu Jianghua, Wu Yong, Brian Classon, Weimin Xiao, David Mazzarese, Zhao Yang, Tony Saboorian
Erschienen in: 5G System Design
Aktivieren Sie unsere intelligente Suche um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
This chapter describes, in detail, the air interface of NR and LTE side by side. The basic aspects of LTE that NR builds upon are first described, followed by sections on the NR-specific designs for the carrier, frame structure, physical channels, and reference signals. Then the global candidate spectrum for 5G NR is introduced which demonstrates the new characteristic with wider frequency range and bandwidth impacting on NR design. With respect to C-band as NR deployment typical spectrum, the coverage issue is identified and the mechanism of UL/DL decoupling scheme (i.e., LTE/NR spectrum sharing) to solve the coverage issue is mainly introduced. Afterwards, NR physical layer technologies including waveform, Polar/LDPC codes, MIMO, and mMTC are described, and in all cases the enhancements of NR made relative to LTE are made apparent.