Coalition Game Based Full-duplex Popular Content Distribution in mmWave Vehicular Networks

TL;DR

This paper introduces a coalition game-based full-duplex cooperative scheme for efficient content distribution in mmWave vehicular networks, improving content possession, fairness, and reducing complexity compared to existing methods.

Contribution

It proposes a novel coalition formation game approach for full-duplex V2V content sharing that maximizes received contents and individual profit simultaneously.

Findings

Outperforms existing schemes in content possession and fairness.

Demonstrates low computational complexity and efficient switch operations.

Achieves higher content distribution efficiency in mmWave vehicular networks.

Abstract

The millimeter wave (mmWave) communication has drawn intensive attention with abundant band resources. In this paper, we consider the popular content distribution (PCD) problem in the mmWave vehicular network. In order to offload the communication burden of base stations (BSs), vehicle-to-vehicle (V2V) communication is introduced into the PCD problem to transmit contents between on-board units (OBUs) and improve the transmission efficiency. We propose a full-duplex (FD) cooperative scheme based on coalition formation game, and the utility function is provided based on the maximization of the number of received contents. The contribution of each member in the coalition can be transferable to its individual profit. While maximizing the number of received contents in the fixed time, the cooperative scheme also ensures the individual profit of each OBU in the coalition. We evaluate the proposed scheme by extensive simulations in mmWave vehicular networks. Compared with other existing schemes, the proposed scheme has superior performances on the number of possessed contents and system fairness. Besides, the low complexity of the proposed algorithm is demonstrated by the switch operation number and CPU time.