A bidding game method based on load balancing in vanet

Abstract

The invention belongs to the technical field of mobile communication, and discloses a bidding game method for guaranteeing access point (AP) load balancing under an urban scene. A construction process is that in a time period that a green lamp is switched on, when a vehicle passes through an intersection, and a plurality of APs compete for the same group of vehicles, loads of the APs are easily unbalanced, and the network performance can be influenced. In order to solve the problem, the bidding game method is provided according to Bertrand bidding and Bertrand antinomy. In order to adapt to characteristics such as VANET high mobility and network topology frequency change, the green lamp switch-on time is divided into a plurality of time pieces; for each time piece, the AP calculates a price according to the provided bidding game method; the price at the current time piece is influenced by a bidding result of the last time piece, so that the whole process is a dynamic repeated game; and finally, a dynamic game Nash balancing solution is obtained, namely a price strategy of the APs. The method has the effects and the benefits that displacement of the vehicles can be simulated; and the bidding game method which accords with the VANET scene and guarantees AP load balancing is provided.

Description

technical field [0001] The invention belongs to the technical field of mobile communication. Aiming at the unbalanced load problem of AP (Access Point, AP) in vehicle Ad Hoc Network (VANET) urban scene, a new bidding game method is proposed according to Bertrand game and Bertrand paradox. Background technique [0002] In VANET urban scenarios, when multiple APs coexist in the same public hotspot area, load imbalance may occur between them due to competition for the same group of vehicles. This imbalance may reduce resource utilization and AP service quality , affecting network performance. To alleviate this imbalance, researchers have proposed a number of methods to address the problem. [0003] The load balancing method proposed at this stage mainly has the following problems: 1) It does not meet the characteristics of high mobility of VANET. Due to the characteristics of high mobility and frequent network topology changes of VANET, the proposed solution should conform t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a bidding game method to ensure AP load balance in the VANET urban scene, which adapts to practical problems such as fast movement of VANET nodes (vehicles), frequent network topology changes, large number of nodes and uneven distribution, etc.

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