Selective Cooperative Transmission in Ad Hoc Networks with Directional Antennas

Kim, Eui-Jik; Youm, Sungkwan

doi:10.1155/2013/473609

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…Moreover, [36]. In the same way, a recent research SCT [35] ensures that distance-based multiple data rates are supported by the directional antenna system as shown in Fig. 10.…”

Section: B Antenna Modelmentioning

confidence: 86%

“…This high gain sector is called main-lobe and remaining (M −1) low gained sectors directed to different directions are termed as minor-lobes or back lobes. The proposed work assumed the idealized directional antenna pattern termed as "flat-top"antenna model where the gain of minor-lobes are assumed to be very low [27], [35] and the minor-lobe effect is negligible, i.e., the antenna gain is fixed within the beamwidth θ of a particular mainlobe beam and the gain outside the beamwidth considered as zero .Therefore, the identical antenna gains of the mainlobe and minor-lobe are given by G main = 2π/θ and G minor = 0 respectively, where θ is the beamwidth of a beam. Moreover, [36].…”

Section: B Antenna Modelmentioning

confidence: 99%

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Cooperation-Based Adaptive and Reliable MAC Design for Multichannel Directional Wireless IoT Networks

et al. 2021

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Internet of Things (IoT) is the ultimate enabler of modern civilization. Cooperative communication in multichannel directional wireless networks is one of the cutting-edge IoT research themes. Typically, cooperation in wireless networks is the opportunistic relaying of data packets for neighboring nodes by idle nodes. Current IoT-based researches related to multichannel with directional antenna introduce the control channel cooperation. But, the iterative phenomenon of negotiation in control channel results in higher communication delay. Hence, to reduce the data transmission delay, cooperation in data relaying need to be used along with control channel cooperation. In this paper, we propose a Cooperation-based Adaptive and Reliable MAC (CAR MAC) Design for Multichannel Directional Wireless IoT Networks that combines both of these cooperation and multichannel directional concepts of cooperation. Multichannel directional hidden terminal problems and deafness problems in medium access are solved using both concepts of cooperation jointly. Besides, multidirectional data packet relaying in the same data channel enables parallel transmission that increases the bandwidth utilization. Moreover, the proposed protocol uses a smart GPS (Global Positioning System) based neighbor discovery. Therefore, the directional position and distance among the IoT-enabled wireless nodes are smartly determined to make the control channel cooperation more informative. The results of extensive simulations reveal that CAR MAC achieves significant improvement in network performances.

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“…Moreover, [36]. In the same way, a recent research SCT [35] ensures that distance-based multiple data rates are supported by the directional antenna system as shown in Fig. 10.…”

Section: B Antenna Modelmentioning

confidence: 86%

Section: B Antenna Modelmentioning

confidence: 99%

Cooperation-Based Adaptive and Reliable MAC Design for Multichannel Directional Wireless IoT Networks

et al. 2021

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“…Note that the direction can be divided into severa same slot on the same channel. Let ϕ denote the direction of communication and ψ denote the direction of main lobe boresight, and we adopt the following antenna model [23,34]:…”

Section: Multichannel Directional Fanet Modelmentioning

confidence: 99%

“…Note that S θ is usually bigger than θ celerate neighbor discovery. When the main lobe rendezvous is achieved for T boresight of the transmitter and receiver overlap, which is shown in Let φ denote the direction of communication and ψ denote the direction lobe boresight, and we adopt the following antenna model [23,34]:…”

Section: Multichannel Directional Fanet Modelmentioning

confidence: 99%

A Multichannel MAC Protocol without Coordination or Prior Information for Directional Flying Ad hoc Networks

Liang,

Zhao,

Zhang

et al. 2023

Drones

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Achieving neighbor discovery for a directional flying ad hoc network (FANET) with multiple channels poses challenges for media access control (MAC) protocol design, as it requires simultaneous main lobe and channel rendezvous while dealing with the high UAV mobility. In order to achieve fast neighbor discovery for initial access without coordination or prior information, we first establish the theoretical supremum for the directional main lobe. Then, to achieve the supremum, we introduce the BR-DA and BR-DA-FANET algorithms to respectively establish the supremum on rendezvous between a pair of UAVs’ main lobes and rendezvous of main lobes for all UAVs in the FANET. To further accelerate the neighbor discovery process, we propose the neighbor discovery with location prediction protocol (ND-LP) and the avoiding communication interruption with location prediction (ACI-LP) protocol. ND-LP enables quick main lobe rendezvous and channel rendezvous, while ACI-LP enables beam tracking and channel rendezvous together with the avoidance of communication interruptions. The simulation results demonstrate that the proposed protocols outperform the state-of-the-art works in terms of neighbor discovery delay.

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“…Other variants of such a DMAC protocol are in references [88,89]. Reference [88] proposes a directional cooperative MAC (DC-MAC) for ad hoc networks, while reference [89] proposes a selective cooperative transmission in ad hoc networks with directional antennas.…”

Section: Contention-based Cooperative Dmac Protocolsmentioning

confidence: 99%

Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

Wong

Chen

Chin

2015

JSAN

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This survey paper presents the state-of-the-art directional medium access control (MAC) protocols in wireless ad hoc and sensor networks (WAHSNs). The key benefits of directional antennas over omni-directional antennas are longer communication range, less multipath interference, more spatial reuse, more secure communications, higher throughput and reduced latency. However, directional antennas lead to single-/multi-channel directional hidden/exposed terminals, deafness and neighborhood, head-of-line blocking, and MAC-layer capture which need to be overcome. Addressing these problems and benefits for directional antennas to MAC protocols leads to many classes of directional MAC protocols in WAHSNs. These classes of directional MAC protocols presented in this survey paper include single-channel, multi-channel, cooperative and cognitive directional MACs. Single-channel directional MAC protocols can be classified as contention-based or non-contention-based or hybrid-based, while multi-channel directional MAC protocols commonly use a common control channel for control packets/tones and one or more data channels for directional data transmissions. Cooperative directional MAC protocols improve throughput in WAHSNs via directional multi-rate/single-relay/multiple-relay/two frequency channels/polarization, while cognitive directional MAC protocols leverage on conventional directional MAC protocols with new twists to address dynamic spectrum access. All of these directional MAC protocols are the pillars for the design of future directional MAC protocols in WAHSNs.

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Selective Cooperative Transmission in Ad Hoc Networks with Directional Antennas

Cited by 6 publications

References 11 publications

Cooperation-Based Adaptive and Reliable MAC Design for Multichannel Directional Wireless IoT Networks

Cooperation-Based Adaptive and Reliable MAC Design for Multichannel Directional Wireless IoT Networks

A Multichannel MAC Protocol without Coordination or Prior Information for Directional Flying Ad hoc Networks

Directional Medium Access Control (MAC) Protocols in Wireless Ad Hoc and Sensor Networks: A Survey

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