中国邮电高校学报(英文)

中国邮电高校学报(英文) ›› 2019, Vol. 26 ›› Issue (4): 25-35.doi: DOI: 10.19682/j.cnki.1005-8885.2019.1014

• Wireless • 上一篇    下一篇

Coalitional game-based WiFi offloading algorithm in heterogeneous networks

Sun Lin, Zhu Qi   

  1. Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Nanjing University of Posts and
    Telecommunications, Ministry of Education, Nanjing 210003, China
  • 收稿日期:2018-12-20 修回日期:2019-07-28 出版日期:2019-08-31 发布日期:2019-10-29
  • 通讯作者: Corresponding author: Zhu Qi, E-mail: zhuqi@njupt.edu.cn E-mail:zhuqi@njupt.edu.cn
  • 作者简介:Corresponding author: Zhu Qi, E-mail: zhuqi@njupt.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science
    Foundation of China (61971239, 61631020).

Coalitional game-based WiFi offloading algorithm in
heterogeneous networks

Sun Lin, Zhu Qi   

  1.  Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Nanjing University of Posts and
    Telecommunications, Ministry of Education, Nanjing 210003, China
  • Received:2018-12-20 Revised:2019-07-28 Online:2019-08-31 Published:2019-10-29
  • Contact: Corresponding author: Zhu Qi, E-mail: zhuqi@njupt.edu.cn E-mail:zhuqi@njupt.edu.cn
  • About author:Corresponding author: Zhu Qi, E-mail: zhuqi@njupt.edu.cn
  • Supported by:
    This work was supported by the National Natural Science
    Foundation of China (61971239, 61631020).

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摘要：

Aiming at the coexistence of cellular network and wireless fidelity (WiFi) network, a coalitional game-based
WiFi offloading algorithm in heterogeneous networks is proposed. Firstly, this paper defines the user fairness utility
function that comprehensively considers the user communication rate, cost and delay. Then, the coalitional game
model including two types of coalitions is constructed. To control the transfer of users among coalitions, a coalition
transfer criterion that simultaneously improves the user's individual utility and the total system utility is proposed.
In addition, this paper presents a channel allocation scheme that ensures full utilization of system resources to
maximize the total utility of the system. The simulation results show that the proposed offloading algorithm can
reasonably utilize the resources of cellular network and WiFi network, and improve the utility of users and system.

关键词: WiFi offloading, fairness, coalitional game, resource allocation

Abstract:

Aiming at the coexistence of cellular network and wireless fidelity (WiFi) network, a coalitional game-based
WiFi offloading algorithm in heterogeneous networks is proposed. Firstly, this paper defines the user fairness utility
function that comprehensively considers the user communication rate, cost and delay. Then, the coalitional game
model including two types of coalitions is constructed. To control the transfer of users among coalitions, a coalition
transfer criterion that simultaneously improves the user's individual utility and the total system utility is proposed.
In addition, this paper presents a channel allocation scheme that ensures full utilization of system resources to
maximize the total utility of the system. The simulation results show that the proposed offloading algorithm can
reasonably utilize the resources of cellular network and WiFi network, and improve the utility of users and system.

Key words: WiFi offloading, fairness, coalitional game, resource allocation

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