Challenges of Multi Band/Multi Technology Cellular installation
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1 07 March 2018 Challenges of Multi Band/Multi Technology Cellular installation Kathrein/Deltronic Telecom Infra Event, Rotterdam, 7 th March 2018
2 Actively Shaping the Connected World We solve the most complex requirements and challenges. We use this deep-rooted strength to act as a driving force in shaping the world of tomorrow, where technologies converge. 2
3 1. Trends in Mobile Communication Industry 3
4 Data tsunami the world is changing Papal Election 2005 Papal Election
5 Trends: Multi-Array / Multi-Band Antennas Increased need for Multiband Antennas Permission for additional sites in Europe is hard to get Operators normally have more than one license Acceptance of new antennas on sites decreases Source: ABIResearch KATHREIN's Multiband Antenna Portfolio for LTE covers all bands Compact design with high integration independant Remote Electrical Tilt Source: ABIResearch 5
6 Network Vision 2022 Urban Area 3D Coverage Broadcast via GEO SAT xmimo FttC/DOCSIS 3.1/R-Phy Connected Car/Car2X Edge Computing BOSNET/ TETRA/ Project 25 Urban areas will serve the most use cases with the latest technologies installed. Street Connect/Densification D2D/Mesh Network Inside Connect Indoor Coverage 6
7 2. Antenna Trends 7
8 HISTORY Antenna Complexity Limited number of available network opportunities e.g. GSM Operator 1 GSM 900 Extended Lowband AISG Colour Code XPol Panel MHz Lowband array 8
9 PRESENT Antenna Complexity Growing number of different frequency ranges for Mobile Communication Systems e.g. GSM900 GSM1800 UMTS 2100 LTE Operator LTE GSM / UMTS GSM UMTS LTE Demand: different bands in one antenna Solution: create multi-band antennas with different antenna arrays Radome LB Array 698/ MHz HB Array MHz HB Array UBB MHz 9
10 Antenna Complexity Upgrades / Expansions From 2RxDiv to 4RxDiv From 2 x 2 MIMO to 4 x n MIMO 8 x n MIMO? New licence new requirements on site Mulit-Array, Ultra-Broadband Kathrein Design = Superintegration Future-proof roll-out = no additional CAPEX and OPEX Less wind load + weight = lower CAPEX
11 Kathrein L-Band 14-Port Antenna FlexRET L-Band Q (R1) (R2) (B1) (Y1) (G1) (B2) (Y2) 16 dbi 16 dbi 17.5 dbi 17.5 dbi 17 dbi 17.5 dbi 18 dbi T 2-12 T T T T T 1999 / 378 / 164 mm MIMO Correlation Table x 2 x x x x x x x 4 x 4 x x x x 11
12 What about PIM in a Single Radome solution? Lowband: problem with filtered lowband solution, one must combine 700 and 800 possible PIM right away also, filtered lowband means that all lowband carriers are combined after the diplexer Proposal: split up lowbands in two columns OR don t use 800 MHz band! 12
13 3. Network Quality 13
14 Intermodulation distance of -150 dbc Δ 150 db = * distance earth to sun diameter pinhead = = 150 db Diameter pinhead: ~1,5 mm Distance earth to sun: ~150 Mio km earth sun 14
15 Intermodulation What are the results of bad PIM performance? Interference respectively SNR is dependent on PIM, tilt accuracy, HPBW,.. Low SNR end up in less data throughput [Source: Ericsson] 15
16 CrossPolarRatio - CPR Bad CPR bad receive diversity and MIMO performance Recommendation: 8-10 db within sector [2] 16
17 CPR CrossPolarRatio directly influences the network performance The higher the CPR, the higher the Div-Gain 17
18 Examples for IM causes Antenna environment 18
19 ??? Challenges for the Future Recognize trends New Frequency usage, e.g. 3.5 GHz for LTE Combination of TDD / FDD systems Supplemental Downlink 5 G Ultra High Frequencies?? Which frequency combinations in one radome? Small Cell configurations Super integrated 16 port passive plus 3.5GHz mmimo 19
20 istock.com Kenishirotie Stay Connected Thank you very much for your attention! Any questions? 20
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