DocumentCode :
2721484
Title :
Quality-of-Service degradation strategies in multimedia wireless networks
Author :
Sen, Sanjoy ; Jawanda, Jastinder ; Basu, Kalyan ; Das, Sajal
Author_Institution :
Wireless Syst. Eng. Lab., Northern Telecom Inc., Richardson, TX, USA
Volume :
3
fYear :
1998
fDate :
18-21 May 1998
Firstpage :
1884
Abstract :
We propose new strategies for call degradation and call admission in a third generation multimedia wireless network. Our approach is based on modeling the quality-of-service (QoS) degradation of real-time and non-real-time traffic. To increase the carried traffic in an overloaded system, some of the ongoing calls are forced to operate under a degraded mode, thereby releasing channels that they are using. Two orthogonal QoS parameters, called carried traffic and bandwidth degradation, are characterized and a cost function describing the total revenue earned by the system from a bandwidth degradation policy is formulated. This cost function model is then extended to incorporate a call admission policy. Detailed simulation experiments are conducted to validate the proposed model. When there is a mixture of real-time and non-real-time calls in the system, the real-time traffic generally has preemptive priority over the other, which are buffered for future admission in case of preemption. A channel sharing scheme is proposed for non-real-time traffic and analyzed using a Markov modulated Poisson process (MMPP) based queueing model and by simulation experiments
Keywords :
Markov processes; cellular radio; modulation; multimedia communication; packet radio networks; quality of service; queueing theory; telecommunication congestion control; telecommunication traffic; MMPP; Markov modulated Poisson process; bandwidth degradation; call admission; call degradation; carried traffic; cellula radio; channel sharing; cost function; nonreal-time traffic; orthogonal QoS parameters; overloaded system; preemptive priority; quality-of-Service degradation; queueing model; real-time traffic; simulation experiments; third generation multimedia wireless network; total revenue earned; Analytical models; Bandwidth; Cost function; Degradation; Quality of service; Queueing analysis; Real time systems; Telecommunication traffic; Traffic control; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
ISSN :
1090-3038
Print_ISBN :
0-7803-4320-4
Type :
conf
DOI :
10.1109/VETEC.1998.686083
Filename :
686083
Link To Document :
بازگشت