Journal of Jilin University(Engineering and Technology Edition) ›› 2020, Vol. 50 ›› Issue (1): 315-323.doi: 10.13229/j.cnki.jdxbgxb20180998

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Dynamic game algorithm for spectrum sharing based on priority of secondary users

Cui-ran LI(),Yong-sheng YU,Jian-li XIE   

  1. School of Electronics and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
  • Received:2018-09-29 Online:2020-01-01 Published:2020-02-06

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Abstract:

A dynamic game algorithm for cognitive spectrum sharing is proposed, to solve the spectrum sharing problem in the spectrum market, in which there exist multiple primary users and secondary users that belong to primary service and secondary service respectively. The Priority strategy is introduced to meet the spectrum requirements of mission-critical users and high real-time service users of secondary service. The spectrum price satisfying allocation attribute of scarce resources is obtained by considering the revenue of primary service and the satisfaction of secondary service. The non-cooperative game is used to model the competition process between secondary users to maximize the utilities of secondary users. The simulation results of static game, dynamic game and dynamic game stability show that the algorithm is reasonable and effective in spectrum sharing.

Key words: communication technology, cognitive radio, spectrum sharing, non-cooperative game, priority

CLC Number: 

  • TN929.5

Fig.1

System model"

Table 1

Saaty scale"

aiji:j重要程度aiji:j重要程度
1同等重要7强烈重要
3稍微重要9极端重要
5明显重要

Fig.2

Iteration flow chart"

Fig.3

Optimal spectrum request bandwidth and Nash equilibrium point"

Fig.4

Total spectrum bandwidth that primary service leases out under different number of primary users"

Fig.5

Revenue of primary service corresponding to different values of parameter τ"

Fig.6

Stable and unstable regions of dynamic game"

Fig.7

Process of dynamic game converging to Nash equilibrium"

Fig.8

Impact of secondary user priority on spectrum request bandwidth"

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