Affiliations: [a] Computer Engineering, Gachon University, Seong-Nam-Dae-Ro 1342, Su-Jeong-GU, Seong-Nam City, Republic of Korea | [b] Mobility Software, DooWon Technical University, Jurawi-Gil, 159, Pajueup, Paju City, Republic of Korea
Abstract: IP mobility support is based on terminal behavior, recognizing mobility and maintaining a continuous communication session. The existing mobile IP location registration sends a message to one or more routers during a handoff within a domain by using a multicast address to process messages continuously. This implementation requires persistent message processing among all routers to determine new multicast address assignments. To solve this problem, we propose a method that enables the mobile user to obtain a QoS guarantee when the mobile device moves to an overlapping area under the mobile IP. Therefore, dynamic mobility management includes location updates under the mobile IP, and transmission of packets from the expected access points. When a handoff occurs while the mobile device is connected, the mobile host dynamically adapts to the mobility characteristics of the mobile node and transmits missed packets. In addition, by first using a location router, handoff latency reduction and packet loss requirements between domains in the overlapping mobile network environment are resolved. Second, the proposed algorithm has low-control traffic in the mobile network, allowing quick handoffs. Although instantaneous throughput is reduced during handoffs, tunneling is reduced by 10-30%, even after a handoff, by retransmitting packets missed by the mobile host, while location-registration-update times are reduced by 20-80%.
Keywords: Mobile IP, Session Initiation Protocol, multimedia communication, QoS, Home Agent, Call-to-Mobility Ratio, mobility management, Location Registration Management
