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

Dai, Hong-Ning; Ng, Kam-Wing; Wu, Min-You

doi:10.1007/s11277-013-1206-9

Cited by 18 publications

(12 citation statements)

References 20 publications

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“…However, the realistic antenna models are so complicated that they are not tractable in theoretic analysis [17], [19], [20]. A sector model is one of typical simplified antenna models [21]- [23], as shown in Fig.…”

Section: Directional Antennasmentioning

confidence: 99%

Connectivity of Underlay Cognitive Radio Networks With Directional Antennas

Wang

Dai

Georgiou

et al. 2018

IEEE Trans. Veh. Technol.

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In cognitive radio networks (CRNs), the connectivity of secondary users (SUs) is difficult to be guaranteed due to the existence of primary users (PUs). Most prior studies only consider cognitive radio networks equipped with omni-directional antennas causing high interference at SUs. We name such CRNs with omni-directional antennas as Omn-CRNs. Compared with an omni-directional antenna, a directional antenna can concentrate the transmitting/receiving capability at a certain direction, consequently resulting in less interference. In this paper, we investigate the connectivity of SUs in CRNs with directional antennas (named as Dir-CRNs). In particular, we derive closed-form expressions of the connectivity of SUs of both Dir-CRNs and Omn-CRNs, thus enabling tractability. We show that the connectivity of SUs is mainly affected by two constraints: the spectrum availability of SUs and the topological connectivity of SUs. Extensive simulations validate the accuracy of our proposed models. Meanwhile, we also show that Dir-CRNs can have higher connectivity than Omn-CRNs mainly due to the lower interference, the higher spectrum availability and the higher topological connectivity brought by directional antennas.

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Section: Directional Antennasmentioning

confidence: 99%

Connectivity of Underlay Cognitive Radio Networks With Directional Antennas

Wang

Dai

Georgiou

et al. 2018

IEEE Trans. Veh. Technol.

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“…References [63,64] propose a Busy-Tone based DMAC (BT-DMAC) scheme for WAHNs using directional antennas. It is a DRTS/DCTS-based two-channel two-omni-directional-Turn-On/Off-Tone non-circular DMAC protocol.…”

Section: Contention-based Multi-channel 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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“…For example, the authors simulate their protocol with a fixed and constant topology. For instance, a linear distribution topology is used in [10], and a grid topology is used for simulation in [11].…”

Section: Related Workmentioning

confidence: 99%

Coop-DMAC: A Cooperative Directional MAC protocol for wireless networks

Wang

Petrova

Mähönen

2015

2015 IEEE 16th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)

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Directional antennas in wireless networks can provide substantial performance gain and opportunities. In the case of high-frequency systems, such as emerging 60 GHz networks, they are inherent feature of the system design. In contrast to the traditional omni-directional antennas, directional antennas are capable of reducing the interference level, increasing the communication range, and improving spatial reuse. However, new challenges need to be solved, such as the deafness problem and the asymmetric-in-gain. In this paper, we propose Cooperative-Directional MAC (Coop-DMAC) protocol to address the new challenges. The Coop-DMAC is completely distributed and relies on limited cooperation between networked nodes. In Coop-DMAC, nodes are supposed to exchange local information including the angle of arrival of their neighboring nodes and the duration of data transmission to improve their spatial reuse. In this paper, we analyze and evaluate the performance of Coop-DMAC, and pay particular attention to the performance and network topology. Simulation results validate our theoretical analysis and show that the proposed Coop-DMAC protocol outperforms the standard IEEE 802.11ad MAC protocol in terms of higher goodput in most common network topologies considered in the paper. Frame index Destination Address

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

Cited by 18 publications

References 20 publications

Connectivity of Underlay Cognitive Radio Networks With Directional Antennas

Connectivity of Underlay Cognitive Radio Networks With Directional Antennas

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

Coop-DMAC: A Cooperative Directional MAC protocol for wireless networks

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