How to Ensure 5G NR Wireless Quality...LTE and 5G NR Architecture Non-standalone deployments will...

June 2019

How to Ensure 5G NR Wireless Quality

PCTEL CONFIDENTIAL – Limited Customer Distribution Only

• Who is PCTEL • Understanding 5G • 5G Measurements• IBflex and HBflex for 5G• Case Study

Agenda

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Founded: 1994

Headquarters: Bloomingdale, Illinois

Offices: Maryland, Ohio,China (Beijing, Tianjin, Hong Kong)

Employees: ≈ 450

Revenue: ≈ $83M (2018)

PCTEL Solves Complex RF Problems

PCTEL (NASDAQ: PCTI)

PCTEL is a leading supplier of RF systems. Products include

antennas, radios and test and measurement solutions to address

Industrial IoT, 4G/5G infrastructure, Enterprise Wi-Fi, Fleet and

Public Safety.

• 25 years of leadership solving complex RF problems

• Expanding addressable target market and customer base driven by IIoT applications, public safety, fleet and 5G

• Increasing RF complexity presents significant need for PCTEL products across targeted vertical markets to support targeted long term revenue growth

• Strong balance sheet with no debt and $35.2M in cash

• Experienced management team

Courtesy of Los Angeles Sheriff’s Department

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米国PCTEL社はアンテナとRFスキャナのリーディングカンパニー

PCTEL CONFIDENTIAL – Limited Customer Distribution Only4

RF Test and Measurement Tools

IBflex HBflex MXflex

2G 3G 4G 5G NR対応 RFスキャナと干渉源特定ツール


LTE and 5G NR Architecture

Non-standalone deployments will require users to test both 4G and 5G networks

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• Deployment options vary by two factors • The core network: LTE /5G• RAN Network : Standalone/Non-standalone

• Options 1,5,2 are standalone options (Option 1 is current LTE deployments)

• Options 3/3a , 7/7a, 4/4a are non-standalone options• Initial deployments are NSA options 3/3a.

5GNR Option 3/3aから開始、4Gと5Gのテストが必要

PCTEL CONFIDENTIAL – Limited Customer Distribution Only6

5G Numerology & Max Transmission BW

5G NR ではSCS(サブキャリア・スペース)設定が複数存在する

- Subcarrier spacing determines the size of PBCH decode


• The 5G NR SSB consists of SS (i.e. PSS and SSS) and PBCH channels.• In LTE and 5G NR resource grid consists of subcarriers in frequency domain and

symbols in time domain. Resource grid is combination of resource blocks (RBs). One RB (resource Block) consists of 12 consecutive subcarriers in frequency domain.

Bandwidth of 1 SS Block (240 x SCS):Band SCS (kHz) SSB BW (MHz)

FR1 15kHz 3.6MHz

FR1 30kHz 7.2MHz

FR2 120kHz 28.8MHz

FR2 240kHz 57.6MHz

Scanning receiver measurements provide the PSS, SSS and PBCH DMRS (SSB) measurements

Synchronization Signal Block (SSB)Where 5G measurements are performed

7帯域全体の測定不要 → SSBを対象とした測定項目が5Gエリア評価としての指標


Why is Measurement Speed Critical for 5G?

• SSB Beams are bursty Each one lights up for ~70 µsec

• SSB Beams repeat every 20 msec (typical) Most all networks set up for 20 msec

periodicity

Must MAXIMIZE scanning speed to catch the SSB Beam or it is NOT reported

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gNBから複数のSSBが20ms毎に送信 → スキャニングスピードが重要


nrTop N Details

• The nrTOP N measurement detects all PCIs and beam indexes transmitted by the 5G gNB

• Conducted on the SSB burst

nrTOP N scan measures the KPI parameters on an SSB (Synchronization Symbol Burst) in the 5G NR frame. • Includes RSSI, Received Power (RP), Received Quality (RQ) and CINR values for each Beam/PCI combination RSSI Primary Synchronization Signal (PSS) Secondary Synchronization Signal (SSS) Primary Broadcast Channel (PBCH)

• MIB information reported for each PCI

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SSBを対象とした5GNR 無線品質項目に対応 / PCI +各ビーム単位で測定可能


5G NR Measurements (NR Top N)

PSS-RSSI (dBm)

SSS-RSSI (dBm)

Primary Synchronization Signal Received Signal Strength IndicatorSecondary Synchronization Signal Received Signal Strength Indicator

PSS-RP (dBm)

SSS-RP (dBm)

Primary Synchronization Signal Received Power

Secondary Synchronization Signal Received Power

PSS-RQ (dB)

SSS-RQ (dB)

Primary Synchronization Signal Received Quality

Secondary Synchronization Signal Received Quality

PSS-SINR (dB)

SSS-SINR (dB)

SS-SINR (dB)

Primary Synchronization Signal – Signal to Interference Ratio

Secondary Synchronization Signal – Signal to Interference Ratio

Synchronization Signal – Signal to Interference Ratio

Sync Signal Delay Spread

The Delay Spread width is determined by the time difference between the arrival of the first multi-path SSS component to the arrival of the last multi-path component

PCI/ Beam Index

SS PBCH Beam Index

RSPBCH – RSSI (dBm)

Physical Broadcast Channel Demodulated Reference Signal - Received Signal Strength Indicator

RSPBCH – RP (dBm)

Physical Broadcast Channel Demodulated Reference Signal - Received Power

RSPBCH – RQ (dB) Physical Broadcast Channel Demodulated Reference Signal - Received Quality

RSPBCH – SINR (dB)

Physical Broadcast Channel Demodulated Reference Signal – Signal to Noise Interference Ratio

Time Offset Time Offset of the TX-transmit antenna

MIB Master Information Block

SSB – RSSI (dBm) Synchronization Signal Block - Received Signal Strength Indicator

SSB – RP (dBm) Synchronization Signal Block - Received Power

SSB – RQ (dB) Synchronization Signal Block - Received Quality

SSB – SINR (dB) Synchronization Signal Block – Signal to Noise Interference Ratio

Sync channel coverage and quality parameters PBCH and SSB coverage and quality parameters

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5GNRにおけるPCTELスキャナで測定可能なパラメータの一覧


NR Bands supported

• SeeGull HBflex only» mmWave bands (FR2 bands)

N257 (26.5 GHz to 29.5 GHz)N258 (24.25 GHz to 27.5 GHz)N260 (37 GHz to 40 GHz)N261 (27.5 GHz to 28.35 GHz)

• SeeGull HBflex and IBflex » All 3GPP defined sub 6GHz FR1 bands are

supported

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5G NRで定義されるミリ波のバンド、3GPP Sub-6GHz対応


4G Coverage @1800MHz


5G Non-Standalone Cell Sites (4G Primary Carrier + 5G Secondary Carrier)

NSAが開始すると4Gの中にセカンダリーとして5Gネットワークが構築



4G LTE Cell Sites

5G NSA：5G導入前のLTEネットワークカバレッジ


Future 5G Standalone Cell Sites


Zooming in on a 5G Standalone Cell Site

5G SAにおけるネットワーク構築イメージ



5G gNB Synchronization Signal Block Beams (SSBs)8 beams per sector (3 sectors)

例：3セクターgNB、各セクター毎 8ビーム使用のイメージ


SSB Beams from gNB can be adjusted to focus coverage where the traffic is and resource can then be “shifted” away from an area where coverage is not required (e.g. red circle)

5G SSB Beam Adjustment

トラフィックが集中するポイントに指向性を調整 → リソース最大化


MIB Decoding to check 5G NR network configuration

Measure signal coverage and quality of each beam from all gNBs to understand the performance of the 5G NR network, optimization and troubleshooting based on scanner measured data

Coverage Map and Plots from 5G Scanning Receiver

PCTEL社RFスキャナで5Gネットワーク最適化に必要な品質測定が可能


PCTel HBflex Summary

PCTEL HBflexconsistently outperforms

competitors for 5G NR decode

• Speed: HBflex collects 30 measurements/sec for FR1 and 10 measurements/sec for FR2 frequencies

• Frequency Range: HBflex supports both 28 GHz and 37/39 GHz frequencies.

• Data density: HBflex reports multiple PCI’s and higher number of beams per measurement

• Battery Life: HBflex Battery Life (for Walk Tests) ~7.5 Hours

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5GNRの実績多数、高パフォーマンス測定機能で、5GNR品質を最適化へ


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How to Ensure 5G NR Wireless QualityAgendaPCTEL Solves Complex RF ProblemsRF Test and Measurement ToolsLTE and 5G NR Architectureスライド番号 6スライド番号 7Why is Measurement Speed Critical for 5G?nrTop N Details5G NR Measurements (NR Top N) NR Bands supportedスライド番号 154G LTE Cell Sitesスライド番号 17スライド番号 18スライド番号 19スライド番号 20PCTel HBflex Summaryこちらもご覧ください

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