Title :
Supporting rate guarantee and fair access for bursty data traffic in W-CDMA
Author :
Kam, Anthony C. ; Minn, Thit ; Siu, Kai-Yeung
Author_Institution :
Sycamore Networks, Chelmsford, MA, USA
fDate :
11/1/2001 12:00:00 AM
Abstract :
This paper presents a new protocol for statistical multiplexing of bursty data traffic in the forward (base-to-mobile) link of a wireless wideband code division multiple access (W-CDMA) system using orthogonal variable spreading factor (OVSF) codes. At the heart of the protocol is an efficient scheduling algorithm that dynamically assigns an OVSF code to a mobile user on a timeslot-by-timeslot basis and allows many users with bursty traffic to share a limited set of OVSF codes. An important feature of our protocol is that it can provide a heterogeneous data rate guarantee to each mobile user and fully utilize the system capacity. Moreover, the unreserved bandwidth of the network can be shared fairly among competing mobile users
Keywords :
broadband networks; code division multiple access; codes; data communication; land mobile radio; multiplexing; multiuser channels; protocols; radio links; radio networks; spread spectrum communication; telecommunication traffic; OVSF code; base-to-mobile link; bursty data traffic; efficient scheduling algorithm; fair access; forward link; heterogeneous data rate guarantee; orthogonal variable spreading factor codes; protocol; statistical multiplexing; system capacity; unreserved bandwidth sharing; wideband code division multiple access; wireless W-CDMA system; Access protocols; Bandwidth; Code division multiplexing; Heart; Multiaccess communication; OFDM; Scheduling algorithm; Telecommunication traffic; Wideband; Wireless application protocol;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
