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LTE Phy Engineering - additional slides
 

LTE Phy Engineering - additional slides

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Here are some additional materials from LTE Phy Engineering course delivered in December 2012 in Santiago de Chile, Chile. ...

Here are some additional materials from LTE Phy Engineering course delivered in December 2012 in Santiago de Chile, Chile.
If you are interested in attending top in class LTE/LTE-Advanced courses, please have a look http://is-wirelesstraining.com/course-map-2 or contact us directly: sales@is-wireless.com.

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    LTE Phy Engineering - additional slides LTE Phy Engineering - additional slides Presentation Transcript

    • OFDM Processing Chain (From Bits to Carrier Frequency) X1 x1 X2 x2 X3 x3 xN … x4 x3 x2 x1101010011101….. X1 X2 X3 X4 … XN Modulator S/P IFFT P/S QPSK/16QAM/64QAM X4 x4 Q … … t I XN xN t t t t Upconverter CP D/A (Local Oscillator) xN … x4 x3 x2 x1 xN xN-1 0MHz fc f 0MHz f fc BW BW Technical content provided by IS-Wireless, www.is-wireless.com
    • Radio Frame Time Structure 1 Radio Frame (10 ms) 1 subframe (1 ms) Frame =10 subframes 1 slot (0.5 ms)Subframe = 2 slots 1 OFDM symbol (71μs) Slot =7 OFDM symbols CP Useful Part CP Useful Part CP Useful Part CP Useful Part CP Useful Part CP Useful Part CP Useful Part (Normal CP) or 1 OFDM symbol (83μs) Slot =6 OFDM symbols CP Useful Part CP Useful Part CP Useful Part CP Useful Part CP Useful Part CP Useful Part (Extended CP) Technical content provided by IS-Wireless, www.is-wireless.com
    • Radio Frame Frequency Structure 1 Symbol in the frequency domain Useful Subcarriers Smallest allocation Data Subcarrier Pilot subcarrier 12 SCs (180kHz) (QPSK/16QAM/64QAM symbol) (QPSK symbol) Guardband Guardband(not used SCs) (not used SCs) DC subcarrier Subcarrier (SC) (not used in DL) BW: 1.4MHz = 128 SC (72 useful SC) 3MHz = 256 SC (180 useful SC) 5MHz = 512 SC (300 useful SC) 10MHz = 1024 SC (600 useful SC) 15MHz = 1536 SC (900 useful SC) 20MHz = 2048 SC (1200 useful SC) Technical content provided by IS-Wireless, www.is-wireless.com
    • Self Organizing Networks Energy saving No UE in a cell Initial Network Configuration eNB UE info about neighbour eNB UE eNB UE UE eNB Coverage Optimization Load BalancingHO Parameter Optimization Neighbour Relation Table Technical content provided by IS-Wireless, www.is-wireless.com
    • E-UTRAN Self-Configuration/Optimization MME Making -IP address configuration presence in -eNB authentication the EPC -association to SGW Basic Setup -downloading eNB software and parameters: -cell-id, -neighbour cells (ID, IP) -sub-carrier allocation, eNB Self-Configuration -reference signal power (pre-operational state) -antenna tilt -Neighbour list configuration Power ON Initial Radio -coverage/capcaity parameter(or cable connected) configuration configuration -Dynamic fractional frequency reuse Self-Optimisation (operational state) Adaptation & -Neighbour list optimisation Optimization -coverage/capacity control Technical content provided by IS-Wireless, www.is-wireless.com
    • E-UTRAN SON ANR Management X2 7. Setup X2 interface 6. Update NRT 1. Measure strong signal8. Update neighbor cell list 2. Report: (PHY_CID = 5) - Phy_CID =5 - strong signal 5. Report: Cell B Cell A -Global_CID = 19 Phy_CID=5 Phy_CID=3 Global_CID=19 eNB Global_CID=17 eNB 4. Read BCH 3. Report Global_CID Request: -Target Phy_CID=5 Exploits UE measurements and reporting Technical content provided by IS-Wireless, www.is-wireless.com
    • LTE Book References1. ”3G evolution : HSPA and LTE for Mobile Broadband”, Erik Dahlman, Stefan Parkvall, Johan Sköld and Per Beming, Academic Press2. “Evolved Packet System (EPS): The LTE and SAE Evolution of 3G UMTS”, Pierre Lescuyer, Thierry Lucidarme3. ”LTE for UMTS, Evolution to LTE-Advanced, Second Edition”, Harri Holma, Antti Toskala, Wiley4. “LTE - The UMTS Long Term Evolution: From Theory to Practice, 2nd Edition” Stefania Sesia, Issam Toufik, Matthew Baker, Wiley Technical content provided by IS-Wireless, www.is-wireless.com