DocumentCode :
1968844
Title :
On TCP-aware uplink scheduling in IEEE 802.16 networks
Author :
Rath, Hemant Kumar ; Karandikar, Abhay
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai
fYear :
2008
fDate :
6-10 Jan. 2008
Firstpage :
349
Lastpage :
355
Abstract :
In this paper we propose two polling based scheduling schemes for applications based on TCP in a multipoint-to-point IEEE 802.16 network. The first scheme uses TCP congestion window (cwnd) size, whereas the second one uses cwnd size and TCP timeouts to allocate time slots among the contending TCP flows. We ensure fairness among the users by using a credit-based approach in which the user which misses the chance to transmit due to bad channel condition gets more weightage when its channel condition favors scheduling. We also propose a method to compute an optimal polling interval which maximizes the slot use and TCP throughput. Implementation of the proposed schemes requires a cross-layer based feedback protocol stack at the base station (BS) and at the subscriber stations (SS). Through exhaustive simulations, we demonstrate that the proposed schedulers provide fairness in terms of slot assignment and amount of data transmission.
Keywords :
IP networks; radio links; radio stations; telecommunication channels; telecommunication traffic; transport protocols; BS; IEEE 802.16 networks; SS; TCP-aware uplink scheduling; base station; channel condition; congestion window; credit-based approach; cross-layer based feedback protocol stack; data transmission; optimal polling interval; subscriber stations; transport protocols; Base stations; Downlink; Feedback; Physical layer; Processor scheduling; Quality of service; Scheduling algorithm; Signal to noise ratio; Throughput; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communication Systems Software and Middleware and Workshops, 2008. COMSWARE 2008. 3rd International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-1796-4
Electronic_ISBN :
978-1-4244-1797-1
Type :
conf
DOI :
10.1109/COMSWA.2008.4554438
Filename :
4554438
Link To Document :
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