7th International Conference on Cognitive Radio Oriented Wireless Networks

Research Article

Guaranteed Service and Delay-Constrained Capacity of a Multi-Channel Cognitive Secondary Network

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2012.248294,
        author={Yuehong Gao and Wenting Jiang and Yuming Jiang},
        title={Guaranteed Service and Delay-Constrained Capacity of a Multi-Channel Cognitive Secondary Network},
        proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={7},
        keywords={cognitive radio delay-constrained capacity network calculus},
        doi={10.4108/icst.crowncom.2012.248294}
    }
    
  • Yuehong Gao
    Wenting Jiang
    Yuming Jiang
    Year: 2012
    Guaranteed Service and Delay-Constrained Capacity of a Multi-Channel Cognitive Secondary Network
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2012.248294
Yuehong Gao1, Wenting Jiang2, Yuming Jiang3,*
  • 1: BUPT and NTNU
  • 2: Beijing University of Posts and Telecommunications (BUPT)
  • 3: Norwegian University of Science and Technology (NTNU)
*Contact email: ymjiang@ieee.org

Abstract

In this paper, we consider a multi-channel cognitive radio system serving a primary network and a secondary network, and analyze the quality of service and delay-constrained capacity of the secondary network. Specifically, by assuming that a certain amount of resource is exclusively reserved and used on each channel by the primary network, we derive the traffic transportation capacity that is guaranteed to the secondary network. Based on this, we analyze the traffic delay distribution in the secondary network and derive an upper bound on it, which allows us to further obtain a guaranteed capacity of the secondary network in serving traffic with probabilistic delay requirement. Both numerical and simulation results are presented for an example where the secondary network traffic follows a model taken from 3GPP LTE. The delay distribution, average delay and delay-constrained capacity of the secondary network are compared. The excellent match between analytical results and simulation results validates the theoretical analysis.