Medium access control in vehicular ad hoc networks
نویسندگان
چکیده
منابع مشابه
Medium access control in vehicular ad hoc networks
Cooperative intelligent transport systems (C-ITS), where vehicles cooperate by exchanging messages wirelessly to avoid, for example, hazardous road traffic situations, receive a great deal of attention throughout the world currently. Many C-ITS applications will utilize the wireless communication technology IEEE 802.11p, which offers the ability of direct communication between vehicles, i.e., a...
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Access control of message is required when certain selected vehicles are granted access to information, instead of all vehicles within communication range. In these situations an access policy (consisting of attributes as road situation and vehicle type) is built into the vehicle and messages are encrypted using these access policies. Only valid vehicles possessing these attributes are able to ...
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In recent years, Vehicular Ad Hoc Networks (VANETs) experience growing interest in both academia and industry. VANETs apply multiple channels, namely Control Channel (CCH) and Service Channels (SCHs), to provide road safety services and improve the comfort and efficiency of driving. Based on the time slotted p-persistent channel access mechanism, this paper proposes a multiple priority supporte...
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The RTS/CTS access scheme, designed to reduce the number of collisions in a IEEE 802.11 network, is known to exhibit problems due to masked nodes, the imbalance between the interference range and the communication range of the nodes, and scenarios in which nodes are unnecessarily silenced, thus preventing parallel transmissions to take place. We present an approach for enhancing the performance...
متن کاملMedium Access Control Mechanisms in Mobile Ad Hoc Networks
Medium access control protocol plays an important role in providing fair and efficient allocation of limited bandwidth in wireless LANs. The basic medium access model in the IEEE 802.11 standard, known as DCF (Distributed Coordination Function), is widely used in wireless LANs. Research efforts in wireless multihop networks, where wireless nodes need to forward packets on other’s behalf, try to...
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ژورنال
عنوان ژورنال: Wireless Communications and Mobile Computing
سال: 2009
ISSN: 1530-8669
DOI: 10.1002/wcm.869