Journal of Xidian University

Previous Articles     Next Articles

Resource allocation based on opportunistic capacity for cognitive radio networks with heterogeneous services

HUANG Jie1;ZENG Xiaoping2;JIAN Xin2;DU Derong2;ZHU Bin2;TIAN Mi2   

  1. (1. ICT Branch of State Grid Chongqing Electric Power Corp., Chongqing 400022, China;
    2. College of Communication Engineering, Chongqing Univ., Chongqing 400000, China)
  • Received:2017-03-22 Online:2018-04-20 Published:2018-06-06

Abstract:

The spectrum resource is time-varied in cognitive radio networks (CRNs) with dynamic spectrum environment, which makes the traditional static chunk-based allocation be of poor performance. To solve this issue, this paper derives an opportunistic capacity model for chunks with time-varied spectrum resources and presents an opportunistic capacity based chunk allocation model for heterogeneous services for CRNs under the time-varied spectrum environment. Simulation results illustrate that the proposed scheme can guarantee the Quality of Service (QoS) requirements of heterogeneous services in the situation with time-varied spectrum resources.

Key words: cognitive radio, spectrum allocation, chunk based allocation, opportunity capacity