Title :
Traffic management in a multicode CDMA system supporting soft handoffs
Author :
Kim, Duk Kyung ; Sung, Dan Keun
Author_Institution :
Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
1/1/2002 12:00:00 AM
Abstract :
A traffic management scheme is proposed in a multicode code-division multiple-access system supporting soft handoff that uses guard channels and a queue for real-time traffic. Preemptive queue control gives priority to queued handoff calls. Handoff traffic is derived as a function of the new call arrival rate, the size of the soft handoff region, mobile speed, the new call blocking probability, and the handoff failure probability. System performance with K types of calls is analyzed by introducing a concept of effective channel. The effects of the number of guard channels, the number of effective channels, system capacity, and other factors are numerically investigated. The effectiveness of the proposed queue control scheme is also observed in terms of handoff processing delay
Keywords :
cellular radio; code division multiple access; delays; multiuser channels; probability; queueing theory; telecommunication control; telecommunication network management; telecommunication traffic; IMT-2000; cellular radio; guard channels; handoff failure probability; handoff processing delay; handoff traffic; mobile speed; multicode CDMA system; multicode code-division multiple-access system; new call arrival rate; new call blocking probability; preemptive queue control; queue control; queued handoff calls; real-time traffic queue; soft handoff region size; soft handoffs; system capacity; system performance; traffic management; Communication system control; Delay effects; Interference; Multiaccess communication; Performance analysis; Streaming media; Telecommunication control; Time division multiple access; Traffic control; Wireless communication;
Journal_Title :
Vehicular Technology, IEEE Transactions on
