Determination of Vertical Handoff Time in Heterogeneous System.pdf

1、21st century has become a new era for wireless technology. The people can not thingabout themselves without this technology. If we walk in road of a big city we can find thatmost of them are using these technologies by d

2、ifferent ways such as cell phone，laptop,sending and receiving e-mail etc. It is really amazing. Where is a few decades ago peoplecan only contact by wires. There must be a link among all the cable，if there were no wireco

3、nnection is impossible. But now people can contact from any where to any parts of theworld. This is only possible by radio towers or many satellites(that are rotating aroundearth) through which signals can be sent. Peopl

4、e now can move freely wherever they wantwhile being more productive. For example，consider a reporter reporting about anyincident from a rural place. Before this wireless communication has possible，he musthave to set up a