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

Volume

51

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

52

Lastpage

62

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;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.992067

Filename

992067