scholarly journals Avoidance of Hidden Terminal and Exposed terminal problem Using Directional MAC Protocol

2015 ◽  
Vol 8 (4) ◽  
pp. 231-238
Author(s):  
Khushboo Agarwal ◽  
Vikas Sejwar
Keyword(s):  
Mac Protocol ◽  
Hidden Terminal ◽  
Directional Mac ◽  
Exposed Terminal

scholarly journals Performance Analysis of a Directional MAC Protocol for Location Information Staleness in MANETs

2005 ◽  
Vol 1 ◽  
pp. 518-527 ◽  
Author(s):  
Masanori Takata ◽  
Masaki Bandai ◽  
Takashi Watanabe
Keyword(s):  
Performance Analysis ◽  
Mac Protocol ◽  
Location Information ◽  
Directional Mac

An Asynchronous Multi-Channel MAC Protocol Based on Cooperation Mechanism in Vehicular AdHoc Network

2015 ◽  
Vol 713-715 ◽  
pp. 1294-1298
Author(s):  
Xin Yun Li ◽  
Lun Tang
Keyword(s):  
Network Reliability ◽  
Mac Protocol ◽  
High Mobility ◽  
Collision Probability ◽  
Delivery Ratio ◽  
Adhoc Network ◽  
Cooperation Mechanism ◽  
Hidden Terminals ◽  
Hidden Terminal ◽  
Channel Environment

To solve the problem of vehicle adhoc network reliability is not high and multi-channel hidden terminals, we propose a multi-channel MAC protocol CAMP(cooperation-based asynchronous multi-channel MAC protocol) based mechanism for asynchronous cooperation in VANET. CAMP add to cooperation mechanisms in asynchronous multi-channel environment, the proposed scheme nodes cooperation in order to obtain the channel state information and status information to other nodes, thus a good solution to the hidden terminal problem multichannel transmission process, to achieve high mobility environment under the reliable transmission of data. The simulation results show that CAMP has better performance than IEEE 1609.4 standard, AMCP protocol, AMCMAC protocol on collision probability of SCH, safety messages delivery ratio.

A Slotted Multichannel MAC Protocol for Fair Resource Allocation in VANET

2018 ◽  
Vol 9 (3) ◽  
pp. 45-59 ◽  
Author(s):  
Pant Varun Prakash ◽  
Saumya Tripathi ◽  
Raghavendra Pal ◽  
Arun Prakash
Keyword(s):  
Mac Protocol ◽  
Cluster Head ◽  
Ieee 802.11P ◽  
Medium Access ◽  
Service Channel ◽  
Packet Delivery ◽  
Vehicle Density ◽  
Hidden Terminal ◽  
Future Data ◽  
Multichannel Mac

This article proposes a slotted multichannel medium access control (SMMAC) protocol for VANETs to reduce CCH congestion, decrease RSU dependency, increase safety and data packet's reliability and improve fairness among vehicles. The main entity is the cluster head that not only notifies all the vehicles under the same cluster about the present state of service channel and future data transmissions but also imposes a condition on the maximum number of vehicles allowed inside a cluster. Controlled vehicle density reduces CCH collisions and as a result, it makes the protocol better in terms of packet delivery. To eliminate the inter-cluster hidden terminal problem, in the proposed algorithm, each cluster uses a service channel different from its neighboring cluster. Analyzing the system for both dense and sparse scenario it can be seen through simulation results that the proposed protocol performs much better in comparison to IEEE 802.11p with respect to Throughput, PDR and Delay.

An Opportunistic Directional MAC Protocol with Pulse/Tone Exchange in Wireless Ad-Hoc Networks

2019 ◽  
Vol 111 (2) ◽  
pp. 1187-1205
Author(s):  
Tetsuro Okazawa ◽  
Jing Ma ◽  
Nobuyoshi Komuro ◽  
Youngjune Choi ◽  
Zhetao Li ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Wireless Ad Hoc Networks ◽  
Ad Hoc ◽  
Mac Protocol ◽  
Pulse Tone ◽  
Directional Mac ◽  
Hoc Networks

Performance of a MANET directional MAC protocol with angle-of-arrival estimation

2008 ◽  
Vol 8 (6) ◽  
pp. 759-769 ◽  
Author(s):  
Kun Liu ◽  
Walaa Hamouda ◽  
Amr Youssef
Keyword(s):  
Mac Protocol ◽  
Angle Of Arrival ◽  
Directional Mac
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