Investigation and Enchancement of Roam Welcome Application Using SS7 Signaling

Abstract

Wireless technology is the foundation for the much-anticipated ubiquitous communication networks that allows people and machines to transfer and receive information on the move, anytime and anywhere. Nimbus Roaming Handler facilitates interaction between Cellular Operators and subscribers using the popular medium of SMS. The Nimbus system needs to interact with the SMSC and the Switching subsystems of a GSM cellular network in order to profile and interact with subscribers. Due to the dynamic nature of the subsystems that Nimbus is dealing with, the system needs to be periodically monitored. Here is a proposal of a new taping server for Jalandhar, which will support 1HSL link. Current setup remains the same wherein taping server at Mohali, tapping the 32 LSL link along with the database server will reside at Mohali. The proposal setup will tap the links in parallel. However in case of HSL the links will directly be terminated on the ADAX HDC card of the Jalandhar server. The databases however remain connected to both the servers over IP. In this thesis the major emphasis is given on study of NIMBUS server which is becoming integral part of Roam welcome application for Punjab circle. Here described how Nimbus facilitates interaction between Cellular Operators and subscribers using the popular medium of SMS and how the operators create profiles and classified roamers based on profiles and schedules messages. For the Roam welcome application for Punjab at present slow speed signaling link is used. So here my major concern is to understand the whole operation of roam welcome messages by using low speed signaling. The low-speed signaling data link is a full-duplex, digital transmission channel operating at 64 or 56 kbps. It concluded from thesis that for Roam welcome application high-speed SS7 is better than low speed SS7 because it operate at a speed of 1.544 Mbps. It increases signaling capacity (32 times), provide more flexible network planning, reduced hardware.