On Wireless Ad Hoc Networks with Directional Antennas: Efficient Collision and Deafness Avoidance Mechanisms

Li, Yihu; Safwat, Ahmed M.

doi:10.1155/2008/867465

Cited by 8 publications

(13 citation statements)

References 3 publications

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“…Because the transmitter signal is radiated in all directions with the same intensity, if there are such nodes in the neighboring of the transmitter/receiver (N T and N R ), it is possible that the radiated signal is captured by these nodes that, in turn, may attempt a communication at the same time. In this case, interferences and collisions can occur [36][37][38]; these issues could enhance with increasing mobility of nodes. Nevertheless, in this case, because nodes radiate in the same way toward all directions, a huge waste of the battery life of nodes is certainly achieved [39,40].…”

Section: Directional Antennas In Manet Common Issuesmentioning

confidence: 99%

An Adaptive Beamforming Time with Round-Robin MAC Algorithm for Reducing Energy Consumption in MANET

Inzillo

Rango

Quintana

et al. 2018

JSAN

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The use of smart antenna systems (SASs) in mobile ad hoc networks (MANETs) has been promoted as the best choice to improve spatial division multiple access (SDMA) and throughput. Although directional communications are expected to provide great advantages in terms of network performance, directional MAC (medium access control) protocols introduce several issues. One of the most known problems in this context is represented by the fact that, when attempting to solve or at least mitigate the problems introduced by these kinds of antennas especially at MAC layer, a large amount of energy consumption is achieved; for example, due to excessive retransmissions introduced by very frequently issue such as deafness and handoff. The expedients proposed in order to reduce these drawbacks attempting to limit beamforming time of nodes in cooperation with a round-robin scheduling can grant high performance in terms of fairness and throughput. However, the overall energy distribution in the network is not efficient due to static approach. In view of this, we propose adaptive beamforming time with round-robin MAC providing a dynamic assignment of the beamforming time with the aim to limit the waste of energy of nodes. The proposed approach provides benefits in terms of energy consumption distribution among nodes in sectorized antennas environments and, simultaneously, improves MAC packet performance.

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Section: Directional Antennas In Manet Common Issuesmentioning

confidence: 99%

An Adaptive Beamforming Time with Round-Robin MAC Algorithm for Reducing Energy Consumption in MANET

Inzillo

Rango

Quintana

et al. 2018

JSAN

View full text Add to dashboard Cite

show abstract

“…Several protocols have been proposed, attempting to tackle the hidden terminal, the deafness problem [23,25,26,28,29,44,59,60]. Several protocols have been proposed, attempting to tackle the hidden terminal, the deafness problem [23,25,26,28,29,44,59,60].…”

Section: 14mentioning

confidence: 99%

“…DMAC with deafness avoidance (DMAC-DA) [59] is proposed to address the hidden terminal problem, the deafness problem, and the deaf zone problem. Multiple RTS or CTS frames are used before a data communication in order to avoid the possible collisions.…”

Section: 14mentioning

confidence: 99%

“…The deaf zone problem (first discovered in [59]) can be regarded as an extended case of the deafness problem. Essentially, the deaf zone problem arises because of the omni-directional reception of RTS frames when a node is in idle mode.…”

Section: The Deaf Zone Problemmentioning

confidence: 99%

“…Solutions to the hidden terminal problem, the deafness problem, the deaf zone problem, and the HOLB problem. Several protocols have been proposed, attempting to tackle the hidden terminal, the deafness problem [23,25,26,28,29,44,59,60].…”

Section: The Holb Problemmentioning

confidence: 99%

See 2 more Smart Citations

An overview of using directional antennas in wireless networks

Dai

et al. 2011

Int J Communication

118

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Compared with omni-directional antennas, directional antennas have many merits, such as lower interference, better spatial reuse, longer transmission range, and improved network capacity. Directional antennas enable numerous emerging outdoor and indoor applications, which have been addressed in many recent studies. Despite the advances in wireless networks with directional antennas (DAWNs), there are many research challenges in all layers of DAWNs. This paper presents a detailed study on recent advances and open research issues on DAWNs. Firstly, we briefly introduce the classification of directional antennas, antenna radiation patterns, antenna modes, and the challenges in the physical layer of DAWNs. We then present research issues on the medium access control (MAC) layer, followed by the current solutions as well as open research problems on the MAC layer of DAWNs. In addition, we also discuss the research issues on the routing layer and the transport layer. Moreover, other research challenges on the performance evaluation of DAWNs and a brief introduction of indoor DAWNs are given in this paper as well. In conclusion, we summarize the current research issues on DAWNs as well as prospects in the future.

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On Busy-Tone Based MAC Protocol for Wireless Networks with Directional Antennas

Dai

2013

Wireless Pers Commun

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On Wireless Ad Hoc Networks with Directional Antennas: Efficient Collision and Deafness Avoidance Mechanisms

Cited by 8 publications

References 3 publications

An Adaptive Beamforming Time with Round-Robin MAC Algorithm for Reducing Energy Consumption in MANET

An Adaptive Beamforming Time with Round-Robin MAC Algorithm for Reducing Energy Consumption in MANET

An overview of using directional antennas in wireless networks

On Busy-Tone Based MAC Protocol for Wireless Networks with Directional Antennas

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