Coalitional game-based WiFi offloading algorithm in
heterogeneous networks

doi:DOI: 10.19682/j.cnki.1005-8885.2019.1014

The Journal of China Universities of Posts and Telecommunications ›› 2019, Vol. 26 ›› Issue (4): 25-35.doi: DOI: 10.19682/j.cnki.1005-8885.2019.1014

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Coalitional game-based WiFi offloading algorithm in

heterogeneous networks

Sun Lin, Zhu Qi

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).

Abstract

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

CLC Number:

TN92

Sun Lin, Zhu Qi.

Coalitional game-based WiFi offloading algorithm in

heterogeneous networks

[J]. The Journal of China Universities of Posts and Telecommunications, 2019, 26(4): 25-35.

References

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Coalitional game-based WiFi offloading algorithm in

heterogeneous networks

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