SIGNALI R MOBILE TELECOMMUNICATIONS Cellular mobile telecommunications is one of the most important telecommunication developments of the last decade. The technical concepts underlying this type of communications were developed by Bell Laboratories [1,2], and implemented in the ~dv~~~ed rn~bi~e telephu~e service intern (AMPS). All current cellular systems in the . are descendants of AMPS. Early mobile stations (MS) were designed as car phones. They were too bulky to be carried around, and had to be powered by the battery of the car. Today, there are compact lightweight MSs with internal rechargeable batteries. . | Signaling in Telecommunication Networks. John G. van Bosse Copyright 1998 John Wiley Sons Inc. ISBNs 0-471-57377-9 Hardback 0-471-22415-4 Electronic SIGNALING IN CELLULAR MOBILE TELECOMMUNICATIONS Cellular mobile telecommunications is one of the most important telecommunication developments of the last decade. The technical concepts underlying this type of communications were developed by Bell Laboratories 1 2 and implemented in the advanced mobile telephone service system AMPS . All current cellular systems in the . are descendants of AMPS. Early mobile stations MS were designed as car phones. They were too bulky to be carried around and had to be powered by the battery of the car. Today there are compact lightweight MSs with internal rechargeable batteries. They can be carried by hand and are personal phones rather than car phones. There are two groups of signaling procedures in cellular mobile telecommunications. This chapter describes the signaling between a MS and a cellular mobile network. The second group of signaling procedures involves various entities in a mobile network and is discussed in Chapter 17. Sections of this chapter cover signaling in the AMPS system and its successors in the . Sections describe signaling in the global system for mobile telecommunications GSM which has emerged as the most important cellular system outside the . INTRODUCTION TO CELLULAR MOBILE NETWORKS This section briefly describes some important aspects of cellular mobile networks 3-5 . 317 318 SIGNALING IN CELLULAR MOBILE TELECOMMUNICATIONS Service Area Figure Cellular mobile network. From EIA TIA 553. Reproduced with permission of TIA. Definitions A cellular mobile network CMN provides communication services for mobile stations that are operating in its service area. A service area typically covers a metropolis and its surrounding suburbs or a number of medium-sized cities. The size of a service area is typically in the range .
