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    Fair packet scheduling in Wireless Mesh Networks

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    Name:
    TCPFairness-WMNmodel.pdf
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    425.3Kb
    Format:
    PDF
    Description:
    Accepted Manuscript
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    Type
    Article
    Authors
    Nawab, Faisal
    Jamshaid, Kamran
    Shihada, Basem cc
    Ho, Pin Han
    KAUST Department
    Computer Science Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Networks Laboratory (NetLab)
    Date
    2014-02
    Permanent link to this record
    http://hdl.handle.net/10754/348507
    
    Metadata
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    Abstract
    In this paper we study the interactions of TCP and IEEE 802.11 MAC in Wireless Mesh Networks (WMNs). We use a Markov chain to capture the behavior of TCP sessions, particularly the impact on network throughput due to the effect of queue utilization and packet relaying. A closed form solution is derived to numerically determine the throughput. Based on the developed model, we propose a distributed MAC protocol called Timestamp-ordered MAC (TMAC), aiming to alleviate the unfairness problem in WMNs. TMAC extends CSMA/CA by scheduling data packets based on their age. Prior to transmitting a data packet, a transmitter broadcasts a request control message appended with a timestamp to a selected list of neighbors. It can proceed with the transmission only if it receives a sufficient number of grant control messages from these neighbors. A grant message indicates that the associated data packet has the lowest timestamp of all the packets pending transmission at the local transmit queue. We demonstrate that a loose ordering of timestamps among neighboring nodes is sufficient for enforcing local fairness, subsequently leading to flow rate fairness in a multi-hop WMN. We show that TMAC can be implemented using the control frames in IEEE 802.11, and thus can be easily integrated in existing 802.11-based WMNs. Our simulation results show that TMAC achieves excellent resource allocation fairness while maintaining over 90% of maximum link capacity across a large number of topologies.
    Citation
    Fair packet scheduling in Wireless Mesh Networks 2014, 13:414 Ad Hoc Networks
    Publisher
    Elsevier BV
    Journal
    Ad Hoc Networks
    DOI
    10.1016/j.adhoc.2013.09.002
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1570870513002035
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.adhoc.2013.09.002
    Scopus Count
    Collections
    Articles; Computer Science Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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