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In this paper, we proposed smart home system architecture that has the ZigBee coordinator and home gateway, which communicate with sensors and appliances and have low standby power consumption. We analyzed the standby power of coordinators and a home gateway in the proposed system.
Transportation safety is one of the most important applications for vehicular ad-hoc networks based on IEEE 802.11p. When a vehicle is in an emergency condition, a safety-related message is transmitted to the neighboring vehicles and infrastructures. Vehicles and infrastructures are exchanging periodic messages on the vehicle position, traffic information to provide various services. When the traffic...
The robust reception of network parameters is a very important issue for the successful deployment of mobile infotainment services, particularly in fast-moving environments. An infrastructure broadcasts service access-related messages to consumer devices. These access messages critically affect the connectivity between the consumer devices and service providers. This paper proposes an algorithm to...
An algorithm for improving connectivity between an infrastructure and mobile terminals is proposed based on IEEE 802.11p/WAVE for infotainment services. We improve the connectivity with the cooperation of neighbor terminals.
In this paper, we propose a cooperative media access control (CMAC) protocol to improve the packet reception ratio and to reduce the average delay for multi-hop transmission. The proposed protocol shows better packet delivery ratio and less delay than the IEEE 802.11p MAC protocol for multi-hop transmission.
The vehicular ad-hoc network (VANET) is one form of mobile ad-hoc networks (MANETs). Vehicles in a specific area can compose VANET to provide a variety of safety-related services. Each vehicle should broadcast its beacon message periodically to form VANET. Moreover, it is a crucial task to disseminate beacon messages of each vehicle for road safety. However, if there are lots of vehicles on the road,...
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