10 September 2003 EDGE: The Introduction of High Speed Data in GSM / GPRS Networks Wendy Florence Ericsson South Africa Rev A 10 September 2003 1 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September 2003 2 Rev A 1
10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September 2003 3 The Abbreviation GPRS = General Packet Radio System EGPRS = GPRS + EDGE modulation EDGE = Enhanced Data rates for Global Evolution Rev A 10 September 2003 4 Rev A 2
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 2003 5 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 2003 6 Rev A 3
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 2003 7 kbps 60 EGPRS Coding Schemes 59.2 50 54.4 40 44.8 30 29.6 20 10 0 8.0 CS1 12.0 CS2 14.4 CS3 20.0 CS4 8.4 MCS1 11.2 MCS2 14.8 MCS3 17.6 MCS4 22.4 MCS5 MCS6 MCS7 MCS8 MCS9 GPRS GMSK modulation EGPRS 8PSK modulation Rev A 10 September 2003 8 Rev A 4
10 September 2003 EDGE versus GPRS link level performance 60 100 C/I distribution for 4/12 frequency re-use with different loads Throughput per TS [ kbps] 50 40 30 20 10 C.D.F. [%] 0 0 0 5 10 15 20 25 30 35 40 0 10 20 30 40 50 60 C/I [db] C/I [db] 90% of the users 90% of the area Assume even traffic distribution in cell 80 60 40 20 Rev A 10 September 2003 9 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 2003 10 Rev A 5
10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September 2003 11 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 2003 12 Rev A 6
10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September 2003 13 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 2003 14 Rev A 7
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 2003 15 Transmission Planning voice kbits/s 60 50 40 30 20 10 0 16 32 48 64 80 User data rate in the air 8.0 CS1 12.0 14.4 20.0 CS2 CS3 CS4 8.4 MCS1 11.2 14.8 17.6 22.4 MCS2 MCS3 MCS4 MCS5 29.6 MCS6 44.8 MCS7 54.4 59.2 MCS8 MCS9 A-bis data rate Rev A 10 September 2003 16 Rev A 8
10 September 2003 Agenda What is EDGE? Implementing EDGE Network and transmission planning The live experience Rev A 10 September 2003 17 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 2003 18 Rev A 9
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 2003 19 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 2003 20 Rev A 10
10 September 2003 File Transfer speed at application level ~110 kbits/s Rev A 10 September 2003 21 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 2003 22 Rev A 11
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 2002 2003 2004 Rev A 10 September 2003 23 First announced EDGE devices Nokia 6200 Nokia 6220 (with camera) Motorola T725 Sony Ericsson (PC card) GA Q2 2002 GA Q3 2003 GA Q1 2004 800/1800/1900 2+1 TS (DL +UL) 900/1800/1900 800/1800/1900 2+1 TS (DL +UL) 3+1 TS (DL +UL) 800/900/1800/1900 4+2 TS (DL +UL) Rev A 10 September 2003 24 Rev A 12