Subject: Mobile Computing

Difficulty: Medium

Marks: 4 Marks

UMTS (Universal Mobile Telecommunications Service) is a thirdgeneration (3G) broadband, packet-based transmission of text, digitized voice, video, and multimedia at data rates upto 2 megabits per second (Mbps).

• Universal Mobile Telecommunications System (UMTS) is a air interface standard UMTS as a competitive open air-interface standard for 3G wireless telecommunications.
• UMTS offers a consistent set of services to mobile computer and phone users, which is not depend on the location. UMTS is based on the Global System for Mobile (GSM) communication standard. Once UMTS is available, computer and phone users can be continuously connected to the Internet wherever they travel, will have the same set of capabilities. Users will get access to internet via combination of terrestrial wireless and satellite transmissions.
• A packet-switched connection that uses the Internet Protocol (IP), that provides a virtual connection is always available.
• UMTS also makes it possible to provide new services like alternative billing methods or calling plans. For instance, users can choose to pay-per-bit, pay-per-session, flat rate, or asymmetric bandwidth options.
• The higher bandwidth of UMTS also enables other new services like video conferencing.
• UMTS may allow the Virtual Home Environment (VHE) to fully develop, where a roaming user can have the same services to either at home, in the office or in the field through a combination of transparent terrestrial and satellite connections.