A seamless handoff scheme for UMTS-WLAN interworking. - Hyun-Ho Choi; Osok Song; Dong-Ho Cho (GLOBECOM, 2004)

Performance evaluation of VoIP over 3G-WLAN interworking system. - Rajadurai Rajavelsamy; Venkateswar Jeedigunta; Balaji Holur; Manoj Choudhary; Osok Song (WCNC, 2005)

A Novel Method for Authentication Optimization during Handover in Heterogeneous Wireless Networks. - Rajadurai Rajavelsamy; Venkateswar Jeedigunta; Osok Song (COMSWARE, 2007)

Seamless Handoff Scheme Based on Pre-registration and Pre-authentication for UMTS-WLAN Interworking. - Hyun-Ho Choi; Osok Song; Dong-Ho Cho (Wirel. Pers. Commun., 2007)

A novel scheme for mobility management in heterogeneous wireless networks. - Rajadurai Rajavelsamy; S. Anand; Osok Song; Sungho Choi (Wirel. Pers. Commun., 2007)

SHARE: seamless handover architecture for 3G-WLAN roaming environment. - Chaegwon Lim; Dong-Young Kim; Osok Song; Chong-Ho Choi (Wirel. Networks, 2009)

A survey on 3GPP heterogeneous networks. - Aleksandar Damnjanovic; Juan Montojo; Yongbin Wei; Tingfang Ji; Tao Luo 009; Madhavan Vajapeyam; Taesang Yoo; Osok Song; Durga Malladi (IEEE Wirel. Commun., 2011)

LTE Femtocells: System Design and Performance Analysis. - Alan Barbieri; Aleksandar Damnjanovic; Tingfang Ji; Juan Montojo; Yongbin Wei; Durga Malladi; Osok Song; Gavin Horn (IEEE J. Sel. Areas Commun., 2012)