Seamless Wireless RSVP over Ubiquitous Networks

In recent years, the development of wireless communication technologies has made progression toward Wireless Mobile ALL-IP Network. By integrating the communication technologies, connections are provided among a great number of wireless communication networks, and users are able to select devices from different wireless communication technologies for internet access. People are no longer confined to some specific location for internet access, and data transmission roaming among heterogeneous wireless networks is becoming more and more popular. For this reason, this paper proposes Seamless Wireless RSVP to solve the problems concerning resource reservation in wireless networks in the hope of a much better roaming communication quality. It has been an important issue to guarantee persistent quality of service (QoS) while mobile nodes are roaming among heterogeneous wireless networks. Therefore, this paper proposes a hierarchical advanced resource reservation mechanism for mobile communication in wireless networks, which, by means of the hierarchical domain registration, will cut down the amount of data exchanged and the network resource wasted caused by resource reservations. This will consequently increase the network resource usage efficiency. This mechanism will also reserve resources ahead of time in the candidate wireless network that the mobile node will visit, so as to maintain the transmission quality of the original network and achieve seamless wireless RSVP over ubiquitous networks.