TY - GEN
T1 - A new soft handover mechanism using DCHs in high-speed downlink packet access networks
AU - Lee, Tae Hoon
AU - Seo, Sung Hoon
AU - Song, Joo Seok
PY - 2009
Y1 - 2009
N2 - In 3GPP (Third Generation Partnership Project) Release 5 (R5), HSDPA (High-Speed Downlink Packet Access) has been standardized to enhance the data rate of downlink packet transmission on top of WCDMA (Wideband Code Division Multiple Access) network. Even HSDPA supports up to 10 Mbps data rate through HS-DSCHs (High Speed- Downlink Shared Channels), an UE (User Equipment) suffers from significant handover latency since HSDPA standard does not supporting soft handover. Therefore, in this paper, we propose a new soft handover mechanism for HSDPA to reduce the handover latency by utilizing DCH (Dedicated Channel) instead of HS-DSCH. Simulation results show that the proposed soft handover mechanism reduces the packet IAT (Inter Arrival Time) less than 15 msec while HSDPA's hard handover suffers from 190 msec packet IAT. It means that the proposed mechanism guarantees the minimum packet IAT requirement of the typical VoIP service in 20 msec. Furthermore, the proposed mechanism employees no service disruption for the data connection while an UE performs the soft handover procedure.
AB - In 3GPP (Third Generation Partnership Project) Release 5 (R5), HSDPA (High-Speed Downlink Packet Access) has been standardized to enhance the data rate of downlink packet transmission on top of WCDMA (Wideband Code Division Multiple Access) network. Even HSDPA supports up to 10 Mbps data rate through HS-DSCHs (High Speed- Downlink Shared Channels), an UE (User Equipment) suffers from significant handover latency since HSDPA standard does not supporting soft handover. Therefore, in this paper, we propose a new soft handover mechanism for HSDPA to reduce the handover latency by utilizing DCH (Dedicated Channel) instead of HS-DSCH. Simulation results show that the proposed soft handover mechanism reduces the packet IAT (Inter Arrival Time) less than 15 msec while HSDPA's hard handover suffers from 190 msec packet IAT. It means that the proposed mechanism guarantees the minimum packet IAT requirement of the typical VoIP service in 20 msec. Furthermore, the proposed mechanism employees no service disruption for the data connection while an UE performs the soft handover procedure.
UR - http://www.scopus.com/inward/record.url?scp=67649379276&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649379276&partnerID=8YFLogxK
U2 - 10.1109/IITSI.2009.42
DO - 10.1109/IITSI.2009.42
M3 - Conference contribution
AN - SCOPUS:67649379276
SN - 9780769535791
T3 - Proceedings - 2nd International Symposium on Intelligent Information Technology and Security Informatics, IITSI 2009
SP - 163
EP - 166
BT - Proceedings - 2nd International Symposium on Intelligent Information Technology and Security Informatics, IITSI 2009
T2 - 2nd International Symposium on Intelligent Information Technology and Security Informatics, IITSI 2009
Y2 - 23 January 2009 through 25 January 2009
ER -