Location Based Transmission Using a Neighbour Aware-Cross Layer MAC for Ad Hoc Networks

Marchang, Jims; Ghita, Bogdan; Lancaster, David

doi:10.1007/978-3-319-33936-8_2

Cited by 4 publications

(8 citation statements)

References 22 publications

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“…The proposed mechanism is also compared with Min NA-PMAC, where the RTS, CTS, Data, and ACK are all sent using an estimated minimum power. The method of using minimum power is similar to that of the paper designed in [3] .…”

Section: Proposed Power Control Cross Layermentioning

confidence: 99%

“…However, instead of using same set of initial backoff ranges, the study uses the backoff mechanism described in [3] where the initial backoff values are controlled dynamically based on the number of active neighbour nodes. In order to reduce the probability of collision during retransmission the backoff values are exponentially increased with reference to the assigned initial backoff ranges.…”

Section: Contention Aware Backoff Mechanismmentioning

confidence: 99%

“…In our previous work, in order to estimate the required power between a source node or a relay node to the next hop, a location based power-controlled MAC is designed in [3] where the location information is used to estimate the distance between the communicating nodes. However, location information is not readily available, so such an approach is invalidated if nodes are not provided with location information or if nodes cannot acquire location information.…”

Section: Introductionmentioning

confidence: 99%

“…However, location information is not readily available, so such an approach is invalidated if nodes are not provided with location information or if nodes cannot acquire location information. The work of [3] is extended in [4] by tuning the transmission power based on the activity of its neighbours and developed a technique to defer channel access dynamically based on the length of the busy state of the shared channel to avoid hidden node issue and ensure a fairer channel access. However, the study of [4] was developed only for a single hop environment by assuming that the location information was provided during initial node deployment and the study did not consider multi-hop communication with node mobility.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the transmission power is dynamically adjusted by considering neighbour's signal strength to avoid hidden node situations. In both [3] and [4] , the backoff mechanism based on the number of active neighbours was introduced, but the analysis of the energy consumption during the backoff periods was not highlighted, so this paper extends the study and incorporates the study of the amount of energy utilization during such deferring sessions.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Neighbour Aware Power-controlled MAC for Multi-hop Ad-hoc networks

et al. 2018

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a b s t r a c tIn Ad-hoc networks, resources in terms of bandwidth and battery life are limited; so using a fixed high transmission power limits the durability of a battery life and causes unnecessary high interference while communicating with closer nodes leading to lower overall network throughput. Thus, this paper proposes a new cross layer MAC called Dynamic Neighbour Aware Power-controlled MAC (Dynamic NA-PMAC) for multi-hop Ad-hoc networks that adjust the transmission power by estimating the communication distance based on the overheard signal strength. By dynamically controlling the transmission power based on the receivable signal strength, the probability of concurrent transmission, durability of battery life and bandwidth utilization increases. Moreover, in presence of multiple overlapping signals with different strengths, an optimal transmission power is estimated dynamically to maintain fairness and avoid hidden node issues at the same time. In a given area, since power is controlled, the chances of overlapping the sensing ranges of sources and next hop relay nodes or destination node decreases, so it enhances the probability of concurrent transmission and hence an increased overall throughput. In addition, this paper uses a variable backoff algorithm based on the number of active neighbours, which saves energy and increases throughput when the density of active neighbours is less. The designed mechanism is tested with various random network scenarios using different traffic including CBR, Exponential and TCP in both scenarios (stationary and mobile with high speed) for single as well as multi-hop. Moreover, the proposed model is benchmarked against two variants of power-controlled mechanisms namely Min NA-PMAC and MaxRC-MinDA NA-PMAC to prove that using a fixed minimum transmission power may lead to unfair channel access and using different transmission power for RTS/CTS and Data/ACK leads to lower probability of concurrent transmission respectively. Crown

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Section: Proposed Power Control Cross Layermentioning

confidence: 99%

Section: Contention Aware Backoff Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic Neighbour Aware Power-controlled MAC for Multi-hop Ad-hoc networks

et al. 2018

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An adaptive interference‐aware and traffic‐aware channel assignment strategy for backhaul networks

Iqbal

Abdullah

Qureshi

2019

Concurrency and Computation

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With the introduction of service-centric applications, the provision of quality of service (QoS) would be a challenge in both classical as well as IoT Networks. 1 The value can be added by monitoring these networks in priority areas and spontaneously levelling the traffic, so that network congestion could be avoided. 2,3 Wireless Mesh Networks (WMNs) are gaining in attraction for metropolitan operations as well as being considered successful for IoT communication. Typically, a wireless mesh network is composed of access points, called Mesh Routers (MRs), which interwork hops to hop to form a larger backhaul network.However, these MRs perform additional functionalities as compared to traditional routers, eg, self-healing. The MRs are usually statically placed and of fixed transmission power in contrast to the classical routers used in ad-hoc networks, which typically vary. Hence, in WMNs', interference can be more controlled. [4][5][6][7][8][9] Similarly, MRs in WMN can have multiple radios and thus interference estimation should be based on all radios, which does not usually pose a difficulty in ad hoc networks as routers are equipped with only a single radio. 10 Hence, a comparatively better performance and throughput can be achieved in WMN against ad-hoc networks. However, MRs equipped with multiple radios can also experience some complexities as parallel transmissions in close proximity cannot occur on the same channel at the same time. Assigning each radio, a different channel is practically not possible as this may result in logical disconnection of the network topology. 11There are 3 non-overlapping channels in IEEE 802.11b that are least interfered eg, channels 1, 6, and 11. [12][13][14][15] Besides the fact that the number of available channels is usually less than the number of radios in proximity, this paper discusses the problem of assigning a limited number of Concurrency Computat Pract Exper. 2020;32:e5650.wileyonlinelibrary.com/journal/cpe

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