EDGE: The Introduction of High Speed Data in GSM / GPRS Networks

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1 10 September 2003 EDGE: The Introduction of High Speed Data in GSM / GPRS Networks Wendy Florence Ericsson South Africa Rev A 10 September Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September Rev A 1

2 10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September The Abbreviation GPRS = General Packet Radio System EGPRS = GPRS + EDGE modulation EDGE = Enhanced Data rates for Global Evolution Rev A 10 September Rev A 2

3 10 September 2003 GPRS / EGPRS Protocol Internet GPRS MS GPRS Protocol SGSN GGSN EDGE TRU BTS PCU EDGE MS EDGE Protocol No changes Rev A 10 September EDGE introduces a new modulation scheme Currently: GMSK Modulation Q EDGE: 8PSK Modulation (0,1,0) Q 1 I (0,0,0) (0,1,1) I 0 (0,0,1) (1,1,1) (1,0,1) (1,1,0) (1,0,0) 1 bit per symbol 3 bits per symbol Rev A 10 September Rev A 3

4 10 September 2003 GPRS and EDGE: Basic Technical Parameters GSM EDGE Modulation GMSK 8-PSK / GMSK Symbol rate 270 ksym/s 270 ksym/s Modulation bit rate 270 kb/s 810 kb/s Radio data rate per time slot 22.8 kb/s 69.2 kb/s User data rate per time slot 20 kb/s (CS4) 59.2 kb/s (MCS9) User data rate (8 time slots) 160kb/s 473.6kb/s (182.4kb/s) (553.6kb/s) Rev A 10 September kbps 60 EGPRS Coding Schemes CS CS CS CS4 8.4 MCS MCS MCS MCS MCS5 MCS6 MCS7 MCS8 MCS9 GPRS GMSK modulation EGPRS 8PSK modulation Rev A 10 September Rev A 4

5 10 September 2003 EDGE versus GPRS link level performance C/I distribution for 4/12 frequency re-use with different loads Throughput per TS [ kbps] C.D.F. [%] C/I [db] C/I [db] 90% of the users 90% of the area Assume even traffic distribution in cell Rev A 10 September EDGE application coverage comparison in a C/I limited system 3dB GPRS To provide 12kbps/Ts throughput: GPRS requires C/I of 10 db EDGE requires C/I of only 7db! EDGE & GPRS will use GMSK Modulation in low C/I areas, close to cell border. Cell coverage is not affected by 8PSK Modulation technique Rev A 10 September Rev A 5

6 10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September Overview of needed network modifications A-bis BTS BTS BTS BSC/ BSC/ PCU PCU Gb A Gs SGSN MSC/VLR MSC/VLR SGSN Gr (MAP) GGSN GGSN HLR HLR Gi (IP) SOG SOG IP Network BGW BGW Gn Gn Backbone IP Network New hardware, software and dimensioning New software and dimensioning New dimensioning New software Rev A 10 September Rev A 6

7 10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September Network Planning Issues R Applications and settings BSC capacity with EDGE TRX PCU capacity for simultaneous EDGE channels Um Throughput per TS BTS # EDGE TRX Abis dimensioning Abis PCU BSC A MSC VLR Gb Gs D SGSN HLR AUC Gn Gr Gc Gi GGSN Rev A 10 September Rev A 7

8 10 September 2003 Dimensioning Issues Voice capacity and quality MS class and capabilities Data capacity per cell [kbits/s] Throughput per PDCH [kbits/s] Reuse and spectrum Dimensioning of Radio Network Experienced e-2-e throughput Existing or new network Configuration # TRXs # epdchs # gpdchs # bpdchs Rev A 10 September Transmission Planning voice kbits/s User data rate in the air 8.0 CS CS2 CS3 CS4 8.4 MCS MCS2 MCS3 MCS4 MCS MCS MCS MCS8 MCS9 A-bis data rate Rev A 10 September Rev A 8

9 10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September Field Tests with an Operator: Measured Cell edge, C/I = 10 db, 34.1kbps, 2TS Max MCS9, 500kb file, C/I = 15dB, 78.4 kbps, 2TS Anticipated EDGE user data speed (with 4 DL time slots) 80 to 130 kbits/s over 90% of cell 150 to 200 kbits/s over 50 % cell radius Rev A 10 September Rev A 9

10 10 September 2003 Live EDGE Demos at Ericsson Ericsson Experience Center Commercial SW and HW 1900 and 1800 dtru Currently running demo with Nokia 6200 EDGE mobile (2 DL, 1 UL) We show customer that EDGE is a reality What are we showing? 1. A PC is using EDGE terminal as modem for internet connection 2. Show data throughput on application layer 3. Start streaming music (~20 kbits/s) 4. Add streaming video news (~55 kbits/s) 5. Add web browsing (~35kbps) 6. FTP of large file (~110 kbits/s) 7. Stream high quality music+video 8. Stream high quality movie clip Rev A 10 September Music Streaming ~20 kbits/s Web browsing ~55 kbits/s Freeware application showing application throughput Streaming Video ~35 kbits/s Transfer speed at application level ~111 kbits/s Rev A 10 September Rev A 10

11 10 September 2003 File Transfer speed at application level ~110 kbits/s Rev A 10 September EDGE... is easy to implement increases both capacity and performance in GPRS networks provides complementary coverage takes GSM to one seamless network Rev A 10 September Rev A 11

12 10 September 2003 EDGE Handsets Availability GSM/EDGE 800/1800/1900 First GSM/EDGE 800/1900/1800 Volumes GSM/EDGE 800/900/1800/1900 GSM/EDGE 900/1800/1900 First GSM/EDGE 900/1800/1900 Volumes 3 band or 4 band GSM/EDGE/WCDMA First Volumes Rev A 10 September First announced EDGE devices Nokia 6200 Nokia 6220 (with camera) Motorola T725 Sony Ericsson (PC card) GA Q GA Q GA Q /1800/ TS (DL +UL) 900/1800/ /1800/ TS (DL +UL) 3+1 TS (DL +UL) 800/900/1800/ TS (DL +UL) Rev A 10 September Rev A 12

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