Handoff Procedure for Seamless Service in IP and OFDM Based 4G Mobile Systems

Namgi KIM  Hyunsoo YOON  

IEICE TRANSACTIONS on Electronics   Vol.E88-C   No.12   pp.2338-2340
Publication Date: 2005/12/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.12.2338
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: Mobile Communication
handoff,  IP,  OFDM,  4G mobile system,  

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We propose an efficient and practical seamless handoff scheme for 4G mobile systems based on IP and OFDM. The seamless handoff scheme obtains the physical channel for handoff in a contention-free manner with pre-synchronization and pre-forwarding IP contexts. As a result, it thoroughly decreases the physical channel blocking time as well as IP layer context-switching time to minimize total handoff delay.