A cell phoneas roaming feature allows the user to get service when traveling beyond the boundaries of his/her service provider. Wireless service providers make approximately 30% of their operating profit from roaming. But despite being a major source of income, roaming suffers from a number of technological problems in the handoff between networks. Signal strength is wildly variable, calls are frequently dropped, and quality of service is poor. Based upon training courses the author teaches at Agilent and Hewlett-Packard, this is the first book to give communications engineers the know-how to faultlessly design and manage roaming services.The international mobile equipment number (IMEI) uniquely identifies mobile equipment. The IMEI is burned within the module. In todaya#39;s environment ... As shown in Figure 3-3, the IMEI consists of: Type approval code (TAC). This code is 6anbsp;...
|Title||:||Roaming in Wireless Networks|
|Publisher||:||Mcgraw-hill - 2005-09-28|