UMTS Network Universal Mobile Telecommunications System University of North Texas CSCE 4520 Wireless Protocols Spence Virdell

UMTS Overview Universal Mobile Telecommunications System 3G phone technology Sometimes marketed as 3GSM Designed for media access on phones Based on GSM air-interface 10/27/06 Spence Virdell

UMTS Overview Uses Wideband Code Division Multiple Access (W-CDMA) UMTS is a standard created for IMT-2000 (International Mobile Telecommunications-2000) by the ITU (International Telecommunication Union) Soft Handoffs Can connect with Packet or Circuit Switching Current coverage 10/27/06 Spence Virdell

Path to UMTS 10/27/06 Spence Virdell

W-CDMA Developed by NTT DoCoMo Two modes of duplex: Time division duplex Frequency division duplex Inter-cell asynchronous (packet) operation Can do soft and hard handoffs 10/27/06 Spence Virdell

UMTS Speed 384 kbps long range, 2 Mbps short range Theoretically can go up to 11 Mbps. 10/27/06 Spence Virdell

UMTS Speed 10/27/06 Spence Virdell

UMTS Network Architecture 10/27/06 Spence Virdell

UTRAN UMTS Terrestrial Radio Access Network UE - Node B - RNC - MSC 10/27/06 Spence Virdell

UTRAN 10/27/06 Spence Virdell

UMTS Spectrum 10/27/06 Spence Virdell

Connection Sequence 10/27/06 Spence Virdell

ATM Packet 10/27/06 Spence Virdell

UMTS QoS Classes Conversational class — Voice, video telephony, video gaming Streaming class — Multimedia, video on demand, webcast Interactive class — Web browsing, network gaming, database access Background class — E-mail, short message service (SMS), file downloading 10/27/06 Spence Virdell

UMTS Internet Europe’s Vodafone UMTS Internet Connection 1.4Mbps Down 384kbps Up 10/27/06 Spence Virdell

S-UMTS (SDMB) 10/27/06 Spence Virdell

S-UMTS Network 10/27/06 Spence Virdell

S-UMTS 10/27/06 Spence Virdell

UMTS Problems Requires more battery power Can handoff UMTS to GSM, but not GSM to UMTS Initial poor coverage For video on demand and other bandwidth heavy services a Base Station needs to be set up every 1-1.5km. Unfeasible in rural areas. 10/27/06 Spence Virdell

Questions Describe the differences between UMTS network architecture and GSM/CDMA network architecture. (Node B, RNC, …) What are the applications of UMTS? (Video, data, voice, internet, …) How are data and voice connections different in UMTS? (packet/circuit switching; priorities) 10/27/06 Spence Virdell

References Satellite Digital Multimedia Broadcasting. C. Selier, N. Chuberre, M.G. Françon, C. Nussli, P. Vincent, G. E. Corazza, A. Vanelli-Coralli. Alcatel, 2004. Performance Estimation of Efficient UMTS Packet Voice Call Control. Gerry Foster, Maria Isabel Pous, Dirk Pesch, Amardiya Sesmun, Valerie Kenneally. IEEE 2002. Multicast in 3G Networks: Employment of Existing IP Multicast Protocols in UMTS. Mariann Hauge, Øyvind Kure. ACM 2002. Wikipedia: Universal Mobile Telecommunications System http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System http://www.umtsworld.com 10/27/06 Spence Virdell