Mobile Communication: GSM, EDGE, UMTS, WLAN - and Beyond? Dr. Hans-Joachim Dreßler Siemens AG
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1 Mobile Communication: GSM, EDGE, UMTS, WLAN - and Beyond? Dr. Hans-Joachim Dreßler Siemens AG
2 Overview 3G* =3rd generation 9. Fuldaer Elektrotechnik-Kolloquium, Page 2 Siemens, 2004
3 Evolution Third Generation First Generation Analogue Basic voice telephony Low capacity Limited local and regional coverage Second Generation Digital Voice plus basic data applications Security International roaming towards Packet Data at low speed High Speed Data Multimedia applications High Capacity High Quality Voice 9. Fuldaer Elektrotechnik-Kolloquium, Page 3 Siemens, 2004
4 2nd Generation Systems GSM/ GPRS D-AMPS CDMAone (IS-95) PDC Standardized by ETSI/EU TIA/USA TIA/USA MPT/JP Multiple Access Scheme Modulation TDMA 8 GMSK TDMA 3 π/4- DQPSK CDMA QPSK TDMA 3 π/4- DQPSK Modulation Rate [ksymb/s] Carrier Spacing/ khz 270, , , ,0 25 TDMA is the dominant Multiple Access Scheme! GSM GPRS D-AMPS PDC Global System for Mobile Communication General Packet Radio Service Digital American Mobile Phone System Pacific Digital Cellular TDMA CDMA GMSK QPSK Time Division Multiple Access Code Division Multiple Access Gaussian Minimum Shift Keying Quarternary Phase Shift Keying 9. Fuldaer Elektrotechnik-Kolloquium, Page 4 Siemens, 2004
5 Mobile Subscriber Statistics Source: GSM Association Mobile Subscribers / Mio W-CDMA GSM/GPRS CDMA D-AMPS PDC analog GSM/GPRS is the dominant Standard! 9. Fuldaer Elektrotechnik-Kolloquium, Page 5 Siemens, 2004
6 3rd Generation Systems (IMT-2000 Family) Standardised by Multiple Access Scheme Modulation Modulation Rate/ ksymb/s Carrier Spacing / khz EDGE 3GPP TDMA 8 GMSK / 8PSK UMTS/ FDD 3GPP CDMA QPSK/ 16QAM UMTS/ TDD 3GPP CDMA QPSK/ 16QAM 3840 / / 1600 CDMA GPP2 CDMA QPSK/ 16QAM CDMA is the dominant Multiple Access Scheme! AMC (Adaptive Modulation and Coding) is applied! EDGE UMTS TDD FDD Enhanced Data Services for GSM Evolution Universal Mobile Telecommunications System Time Division Duplex Frequency Division Duplex 9. Fuldaer Elektrotechnik-Kolloquium, Page 6 Siemens, 2004
7 3G User Data Rates 9. Fuldaer Elektrotechnik-Kolloquium, Page 7 Siemens, 2004
8 3G Peak Data Rates and Modulation Rates EDGE UMTS 10M High Modulation Rates and High Level Modulation Schemes are Key for High Peak Data Rates! 9. Fuldaer Elektrotechnik-Kolloquium, Page 8 Siemens, 2004
9 3G Spectral Efficiency (Data Services) All Systems have similar spectral efficiency Major Increase of Spectral Efficiency with HSDPA! 9. Fuldaer Elektrotechnik-Kolloquium, Page 9 Siemens, 2004
10 UMTS High Speed Downlink Packet Access (HSDPA) Principles: Shared Channel / Fat Pipe Fast Scheduling AMC + 16QAM Fast Hybrid ARQ User Benefit: High Speed Low Latency Scheduling A,B,C UMTS Rel. 99 for comparison: Dedicated channel for every UE DCH -A DCH -B DCH -C 9. Fuldaer Elektrotechnik-Kolloquium, Page 10 Siemens, 2004
11 Mobility High Speed Fixed Walk Vehicle Vehicular Rural Vehicular Urban Pedestrian Indoor Fixed urban Personal Area GSM GPRS DECT BlueTooth EDGE UMTS >2010 HSDPA WLAN (IEEE x HIPERLAN) IEEE802.16e WMAN IEEE a,d HIPERMAN User data rate Local/low mobility and cellular technologies are complementary! Mbps 9. Fuldaer Elektrotechnik-Kolloquium, Page 11 Siemens, 2004
12 Drivers for Applications and Mobility Increasing number of mobile subscribers using multimedia services Mobile applications comparable to the home environment (VHE) New applications demand very high bandwidth High end user expectations: any content, anytime, anywhere, any device, any access, no waiting time Economical Drivers Multi media services requiring high throughput and capacity highest spectral efficiency More bits for the same money 9. Fuldaer Elektrotechnik-Kolloquium, Page 12 Siemens, 2004
13 Challenges and Trends Radio Network A new radio interface optimised for IP packet transmission (in addition to radio interfaces evolved from 3G) Peak user data rate up to Mbps Channel bandwidth up to 100 MHz Carrier frequency: up to 3 5 GHz Scheme: OFDMA (Orthogonal Frequency Division Multiple Access) High spectrum efficiency, high throughput, low power radiation Advanced link adaptation and multi-antenna techniques (SA, MIMO) Multi hop techniques Reconfigurable radio SDR (Software Defined Radio) IP based network functions ( all-ip ) Co-existence and interworking of different radio access technologies (CRRM, ) Services Permanent service availability Personalisation security Context awareness Content adaptation 9. Fuldaer Elektrotechnik-Kolloquium, Page 13 Siemens, 2004
14 Beyond 3G Network Vision PSTN AAA server SIP server Policy server Directory server Radio technologyindependent, IP-based network functions BTS Digital Broadcast Network GSM/ EDGE short range connectivity Node B Gateway IP based network (IPv6) Access Router UTRAN (UMTS) WLAN Access Network New IP radio technology incl. new radio interface AP Network of Networks combining existing and new radio technologies 9. Fuldaer Elektrotechnik-Kolloquium, Page 14 Siemens, 2004
15 Standardisation Services 3G UMTS 2G Beyond 3G? OMA de facto standards? Networking Radio ETSI GSM 3GPP/ 3GPP2 I ETF? IEEE? 4G PP? OMA: Open Mobile Alliance 9. Fuldaer Elektrotechnik-Kolloquium, Page 15 Siemens, 2004
16 Summary and GSM/GPRS is the dominating radio technology today 3G mobile radio offers enhanced data transmission capability in particular with EDGE and UMTS/HSDPA Beyond 3G Tailored to the needs of the society beyond 2010 New air interface targeting on ultra high bit rates IP optimised network technology Seamless interworking of different radio technologies Research activities already started, standardisation open 9. Fuldaer Elektrotechnik-Kolloquium, Page 16 Siemens, 2004
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