Title :
Dynamic resource allocation with a soft handover procedure for application in a broadband system
Author :
Lupo, Gabriele ; Cautelier, Roberto ; Di Benedetto, Maria-Gabriella ; Malena, Francesco
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
Abstract :
This work investigates the advantages of adopting a soft handover (SHO) procedure with a TDD-TDMA-OFDM access method in a WLAN system, when broadband mobile users are considered. Reference is made to the MEDIAN-ACTS system scenario extended to a multi-cell environment. A particular distributed queue packet reservation multiple access scheme with priorities, called PAMA (priority assignment multiple access) is considered. Simulation results carried out in the present investigation indicate that SHO outperforms hard HO (HHO), in terms of packet loss and time delay, and its performance approaches that of the fixed users case. In fact, SHO exploits the overlapping area between adjacent cells permitting users to be simultaneously served by two base stations (BSs) instead of a single one. As a consequence, the overall offered traffic is better distributed among the BSs of the system, resulting into a more efficient resource allocation
Keywords :
OFDM modulation; broadband networks; cellular radio; multimedia communication; packet reservation multiple access; queueing theory; resource allocation; telecommunication traffic; time division multiple access; time division multiplexing; wireless LAN; MEDIAN-ACTS system; PAMA; TDD-TDMA-OFDM access method; WLAN system; adjacent cells; base stations; broadband mobile users; broadband system; distributed queue packet reservation multiple access; dynamic resource allocation; multi-cell environment; multimedia communication; offered traffic; packet loss; priority assignment multiple access; soft handover procedure; time delay; Base stations; Centralized control; Delay effects; Downlink; Frequency; Optical buffering; Resource management; Telecommunication traffic; Traffic control; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797310