Title :
A Novel Two-Tier Handoff Scheme for Mobile Communications in a Hierarchical NEMO System
Author :
Sheu, Tsang-Ling ; Kuo, Bing-Chi
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung
Abstract :
This paper is concerned with a novel two-tier handoff scheme for mobile communications in a hierarchical NEMO (network mobility) system, composed of access routers (ARs), mobile routers (MRs), and visiting mobile nodes (MNs). In the proposed two-tier handoff scheme, the service areas of MR and AR are divided into handoff and non-handoff regions, respectively. Concurrent voice/data sessions in a hierarchical AR-MR model are classified according to the locations of MN and MR within the corresponding MR´s and AR´s service areas. An analytical model with 4-D Markov chains is built to analyze the multimedia communications in terms of the system utilization and the blocking probabilities of new sessions and handoff sessions. Analytical results show that the influences of the residence time of MN and MR on the handoff blocking probability can be very significant. The size of MR´s and AR´s service areas on the system performance is also investigated
Keywords :
Markov processes; mobility management (mobile radio); multimedia communication; telecommunication network routing; 4-D Markov chains; access routers; blocking probabilities; handoff blocking probability; hierarchical NEMO system; mobile communications; mobile nodes; mobile routers; multimedia communications; network mobility; two-tier handoff scheme; Analytical models; Channel allocation; Delay; Electronic mail; Internet; Mobile communication; Multimedia communication; Multimedia systems; Routing; System performance;
Conference_Titel :
Networking and Services, 2006. ICNS '06. International conference on
Conference_Location :
Slicon Valley, CA
Print_ISBN :
0-7695-2622-5
DOI :
10.1109/ICNS.2006.9
