Yungha Ji

A Study of Novel Paging Methods in UMTS Networks

Jeong-Je Cho, Nak-Po Kim, Tae-Hyo Ahn, 2010 .

A mobile VoIP architecture over LTE & WLAN networks

Jinho Hwang, Nakpo Kim, Jongseog Koh, 2010, 2010 The 12th International Conference on Advanced Communication Technology (ICACT).

A study on implementation issues of number portability in IMS networks

Nakpo Kim, Yungha Ji, Giseop Geum, 2011, 13th International Conference on Advanced Communication Technology (ICACT2011).

Femtocell Traffic Offload Scheme for Core Networks

Jaehoon Roh, Yungha Ji, Taehyo Ahn, 2011, 2011 4th IFIP International Conference on New Technologies, Mobility and Security.