Proactive Caching for Transmission Performance in Cooperative Cognitive Radio Networks

  • Jiachen Yang
  • Huifang Xu
  • Bin Jiang
  • Gan Zheng
  • Houbing Song
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10874)


This paper considers cooperation between the primary and secondary network via content caching. The core idea is that secondary basestation caches some popular primary files and thus directly send content to the close primary user, in return some spectrum for secondary basestation to serve their own user. We propose a cooperation scheme which is jointly completed with content caching and transmission schemes, to maximize SU’s data transmission rates while PU’s target rate is achieved. In addition, we formulate the optimal caching allocation into a concave problem in terms of the data transmission rates for any given power allocation. We then provide an effective bisection search algorithm. Simulation results indicate that significant performance gain for both systems over the cooperation without caching. It also shows that our proposed scheme can achieve larger rate region than traditional relay cooperation scheme.


Content caching Cooperative cognitive radio Power allocation 



This research is partially supported by National Natural Science Foundation of China (No. 61471260 and No. 61271324), and Natural Science Foundation 490 of Tianjin (No. 16JCYBJC16000).


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Jiachen Yang
    • 1
  • Huifang Xu
    • 1
  • Bin Jiang
    • 1
  • Gan Zheng
    • 2
  • Houbing Song
    • 3
  1. 1.Tianjin UniversityTianjinChina
  2. 2.Loughborough UniversityLoughboroughUK
  3. 3.Embry-Riddle Aeronautical UniversityDaytona BeachUSA

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