1. GSC-8023 short SOURCE:TSACC TITLE:Beyond IMT-2000/NGN: Next Generation Converged Networks AGENDA ITEM:Joint GRSC/GTSC: 4.2 28 Apr - 1 May 2003GSC-8 (Ottawa)1 Beyond IMT-2000: Next Generation Converged Networks John Visser, P.Eng. Sr. Mgr., International Network Standards Phone:+1-613-763-7028 Fax:+1-613-765-6257 Mobile:+1-613-276-6096 Email:jvisser@nortelnetworks.com Two versions: “short” for presentation “long” for off-line review

2. 28 Apr - 1 May 2003GSC-8 (Ottawa)2 Wireless Vision (I): Connectivity The future of wireless is one in which networks will interconnect people and machines in all combinations Wireless data networking will have an impact as profound as the Internet had on the wired world Everyone has been looking for the ‘killer app.’ Some believe it's all about content. But the killer application is connectivity! Content is not king; connectivity is king.

3. 28 Apr - 1 May 2003GSC-8 (Ottawa)3 Wireless Vision (II): revenue from data It's all about low-price, broadband wireless Growing number of internet-savvy consumers and business professionals want to be connected wherever they are, without wires 3G wireless networks are cheaper to operate Positions operators to reap larger revenue opportunities as data-driven services catch on with consumers and business

4. 28 Apr - 1 May 2003GSC-8 (Ottawa)4 Outside Campus Fixed Walk Vehicle Within Campus Fixed/ Desktop Walk Mobility CDMA2000 1X EV-DO & UMTS HiperLAN2 802.11a LAN 802.11b The Wireless Landscape Wireless Local Area Network (WLAN) Public or Private Site or Campus Enterprise / premises application voice & data network extension Nomadic / “pull” services Non-licensed spectrum Wireless Local Area Network (WLAN) Public or Private Site or Campus Enterprise / premises application voice & data network extension Nomadic / “pull” services Non-licensed spectrum 4G Mbps 1101000.1 CDMA2000 1X GSM/GPRS DECT Bluetooth Wireless Wide Area Network (WWAN) Metro/Geographical area “Always On” Services Ubiquitous public connectivity with private virtual networks Wireless Wide Area Network (WWAN) Metro/Geographical area “Always On” Services Ubiquitous public connectivity with private virtual networks

5. 28 Apr - 1 May 2003GSC-8 (Ottawa)5 Access Independent Wireless Core Network There will be multiple access technologies: UMTS, CDMA DO/DV, GSM, GPRS, EDGE, 802.11, even the PSTN/ISDN as a “fixed access network” They will deliver more capacity, improved spectral efficiency, higher speeds There is no ‘best’ access solution: often the answer will be a hybrid network with several wireless access types providing ‘layers’ of access

6. 28 Apr - 1 May 2003GSC-8 (Ottawa)6 WLANs WLANs are highly-complementary to broader 3G wireless WAN coverage –won't stand alone –an indoor solution to provide high bandwidth data access in nomadic environments –WLAN cannot facilitate the true, ubiquitous 'anywhere, anytime' coverage that consumers have come to expect for wireless voice services

7. 28 Apr - 1 May 2003GSC-8 (Ottawa)7 WLANs A joint WLAN and WWAN offering can make a lot of business sense for wireless operators –enables high-bandwidth data services to customers to increase overall ARPU –enhance end-user satisfaction and customer loyalty –furthers the 'always-on' lifestyle: where we need to be going Hurdle for WLAN business model is not CAPEX, but OPEX –deploying WLANs is inexpensive –costs of backhaul and maintenance are challenges: need to bring these costs down

8. 28 Apr - 1 May 2003GSC-8 (Ottawa)8 Consumer Public Access WLAN Value Chain WLAN Operator Site Leasing “Facility Owner” Backhaul Leased Line Provider WLAN Service Provider Data Center ISP Marketing, billing Aggregator Access points, gateways, etc. Airport (lounge) Hotel Coffee Shop ILEC CLEC WLAN service provider Wireline ISP Corporate LAN

9. 28 Apr - 1 May 2003GSC-8 (Ottawa)9 Coupling Scenarios MSC SIG Terminals BTS Node B BSC RNC Operator Backbone GGSN SGSN WLAN Gateway Access Point Terminals SIG Radius/AAA Server Operator Data Center CS SS7 HLR Public Internet Accounting System Public Internet WLAN Data Center Tight coupling Loose coupling No coupling: this link absent

10. 28 Apr - 1 May 2003GSC-8 (Ottawa)10 Conclusions and Next Steps (I) Establish open protocols to allow different wireless data networks, devices and applications to interface seamlessly –Consumer adoption of wireless data services depends on a common language so that all devices can and will work with all applications on all networks –ITU-T, OMA and 3GPPs working in this direction Access independent core network essential to long term subscriber satisfaction, operator revenues, infrastructure purchases –address inter-system roaming, mobility management, authentication –more cooperation between radio access and core network

11. 28 Apr - 1 May 2003GSC-8 (Ottawa)11 Conclusions and Next Steps (II) Stop playing CDMA vs. GSM vs. UMTS –consumers see services, not technologies –each standard has its merits depending on individual operator needs –argument about which is "best" is irrelevant Networks must recognize the wireless access reality –wireless voice access today; wireless data tomorrow Drive consumer adoption of data services, regardless of access technology, to tap into this enormous new consumer market –consumers pay for services, not technologies