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Designing and implementing of multimode wireless gateway in VANET

According to the demand of communication between equipments in vehicle and external network in VANET, this paper designs and implements a multimode wireless gateway based on Embedded system. The hardware uses ARM11 microprocessor, S3C6410, as controller and integrates 3G module, IEEE802.11g module and Bluetooth module. The software is based on Embedded Linux, develops drivers of integrated modules and user applications, and realizes the function of protocol conversion and routing. With the gateway design in this paper, equipments with different wireless techniques in vehicle can interconnect and have access to external networks including 3G network and WLAN.