Integrated Terrestrial-Satellite Networks The rapid growing data traffic brings more and more pressure to the wireless networks,which is predicted to increase by over 10,000times in the next 20 years.However,currently,there is still large number of population without coverage of mobile service.In addition to the issue of coverage,future wireless networks also need to guarantee the service continuity for emerging services such as Integrated Terrestrial-Satellite Networks The rapid growing data traffic brings more and more pressure to the wireless networks, which is predicted to increase by more than 10,000 times in the next 20 years. Host, currently, there is still large number of population without coverage of mobile service. addition to the issue of coverage, future wireless networks also need to guarantee the service continuity for emerging services such as