5G物理层概念基础介绍-DL,UL各个信道的介绍.pdf

发布时间：2022-06-16 发布人：admin 分类：说明书资料大小：1.24M 资料格式：pdf 举报版权申诉

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第1页.png

第1页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第2页.png

第2页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第3页.png

第3页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第4页.png

第4页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第5页.png

第5页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第6页.png

第6页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第7页.png

第7页 / 共101页

2eaaf4d8-85c1-414e-b206-04a487b36bbe.pdf-第8页.png

第8页 / 共101页

文本预览

5G Layer 1 deep dive 5G Layer 1 deep dive 5G Layer 1 deep dive 5G Layer 1 deep dive May 9th 2018 Yann Léost 04/06/2018 1 For internal use

Physical resources 04/06/2018 2 For internal use

Slot structure Slot structure Slot structure Slot structure Time domain 1 slot ൎ భ మഋ ms 14 OFDM symbols using CP ∆݂ ൌ 2ఓ.15 ݇ܪݖ Frequency range T=1/∆f with ∆݂ ൌ 2ఓ.15 ݇ܪݖ 15 30 60 120 240 FR1 FR1 FR1,FR2 FR2 FR2 Frequency domain Up to 3300 sub-carriers ࣆ 0 1 2 3 4 Can be used for SSB only 3 © Nokia 2016 Frequency range designation Corresponding frequency range FR1 FR2 450 MHz – 6000 MHz 24250 MHz – 52600 MHz

Time domain multiplexing of multiple numerologies Time domain multiplexing of multiple numerologies Time domain multiplexing of multiple numerologies Time domain multiplexing of multiple numerologies 1 slot (scs=15 kHz), same as LTE 1 slot (scs=30 kHz) Longer CP each 0.5 ms 1 subframe (1 ms) 1 slot (scs=60 kHz) 4 © Nokia 2016 1 frame (10 ms)

Frequency domain multiplexing of multiple numerologies Frequency domain multiplexing of multiple numerologies Frequency domain multiplexing of multiple numerologies Frequency domain multiplexing of multiple numerologies Point A Carrier 0 (100 MHz - 273 RB scs=30 kHz) offsetToCarrier Carrier 1 (50 MHz - 270 RB scs=15 kHz) Carrier bandwidth • Constrained by max 3300 tones (275 RB) but in practice reduced to max 273 RB • Carriers associated to different numerology do not necessarily cover the same frequency span • Necessity to provide a relative positioning of each carrier 5 © Nokia 2016 Carrier • Maximum set of consecutive RBs used by a cell for a given numerology • 1 carrier instance for each numerology actually configured in the cell Point A • Absolute reference common to all carriers • Does not necessarily coincide with CRB #0 of a carrier • Signaled to UE by absoluteFrequencyPointA (ARFCN) offsetToCarrier • Provides position of carrier relative to point A • Expressed in number of RB using the carrier numerology

RB nesting principle RB nesting principle RB nesting principle RB nesting principle Offset k0 configured for higher numerology such as to meet the RB nesting principle RB frequency frequency OFDM symbol CRB 0 CRB 0 CRB 0 k0=-6,0,6 tones 6 © Nokia 2016

Bandwidth Part Bandwidth Part Bandwidth Part Bandwidth Part carrier ௦௜௭௘ ܰ஻ௐ௉,௜ Bandwidth part Bandwidth Part (BWP) Subset of contiguous common Resource Blocks RRC Configuration ௦௧௔௥௧ • starting position ܰ஻ௐ௉,௜ ௦௜௭௘ • size ܰ஻ௐ௉,௜ • Subcarrier spacing Up to 4 BWP can be configured per direction in RBs Active BWP Only one BWP active at a time per UE Carries all Tx/Rx of any physical channel Physical resources are identified within BWP ௦௧௔௥௧ ܰ஻ௐ௉,௜ Main usage • Restrict the bandwidth according to UE capabilities • • Dynamically reduce / increase bandwidth according to traffic Initial BWP compatible with all UE categories amount so as to optimize UE power consumption 7 © Nokia 2016

Bandwidth Part switching Bandwidth Part switching Bandwidth Part switching Bandwidth Part switching DCI based Bandwidth Part indicator contained in DCI, refers to BWP identifier received during RRC configuration of all BWP configuration Initial BWP BWP used for initial access Timer based Inactivity timer may be configured (optional) Timer re-started each time a DCI related to current BWP is received Increased each new subframe (FR1) or every half-subframe (FR2) When timer expires, switch to fallback BWP Default BWP BWP that the UE should switch back to on timer expiry Indication of the default BWP is optional and initial BWP can stand for default BWP Inactivity timer BWP 1 BWP 0 BWP switching latency = 600 µs 8 © Nokia 2016 carrier 1 slot

分享到：

赞收藏

资料库

5G物理层概念基础介绍-DL,UL各个信道的介绍.pdf

相关推荐

行业

热门标签

最新资料