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3GPP NR Physical Layer Structure IMT2020.ppt

发布时间：2022-06-03 发布人：admin 分类：说明书 资料大小：4.85M 资料格式：ppt 举报 版权申诉
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    NR Physical Layer Design: Physical layer structure, numerology and frame structure © 3GPP 2012 Havish Koorapaty 3GPP TSG RAN WG1 vice-chairman (Ericsson) Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 1
    NR – Key benefits Ultra-lean Wide spectrum range Forward compatibility © 3GPP 2012 Multi-antenna Low latency Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 2
    Forward compatibility New capabilities New technology components Minimize “always-on” transmissions (ultra- lean) Bad example: Always-on CRS © 3GPP 2012 Keep transmissions together in frequency Bad example: LTE PDCCH/PCFICH/PHICH Avoid static/strict timing relations Bad example: LTE uplink HARQ Reserved resources Downlink transmissions rate matched around Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 3
    Frequency bands © 3GPP 2012 Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 4
    Time-frequency structure © 3GPP 2012 Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 5
    Frame structure Single frame structure Applicable to FDD and TDD Dynamic TDD baseline Possible to semi-statically configure UL/DL split 15 kHz slot identical to LTE subframe Including extra samples in every 7th symbol © 3GPP 2012 Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 6
    Frame structure Transmissions not restricted to slot boundaries © 3GPP 2012 Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 7
    Resource grid One resource grid per numerology and antenna port Resource block = 12 subcarriers One dimensional unit (unlike LTE) Resource element = 1 subcarrier in one OFDM symbol © 3GPP 2012 w idth d n a a rrie r b C One subframe Resource grid, 2Δf Resource grid, Δf One resource block – 12 subcarriers, subcarrier spacing 2Δf One resource block – 12 subcarriers, subcarrier spacing Δf Workshop on 3GPP submission towards IMT-2020, Brussels, Oct. 24-25, 2018 © 3GPP 2018 8
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