International Journal of Engineering Sciences & Research Technology (IJESRT)
The next generation of wireless networks will provide ubiquitous computing by the seamless operation of heterogeneous wireless networks. It will integrate the current co-existing wireless networks to allow the users to connect to the network that best suits their needs. The next generation wireless networks are characterized by anywhere, anytime connectivity, enhanced data services and higher data rates to end-users. This infrastructure will also support efficient handovers. Heterogeneous networks aim to achieve this. To facilitate new services, and make them flexible and bandwidth efficient, vertical roaming of mobile nodes is a tempting possibility for operators.