Load-aware channel hopping protocol design for mobile ad hoc networks

Chao, Chih–Min; Tsai, Hsien-Chen; Huang, Chao-Ying

doi:10.1007/s11276-015-1139-1

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Manipulating the attributive nature of different bands will give rise to the creative performance of these networks. Capacity enhancement via channel switching within a band has been studied thoroughly in [12]. To date, many researchers have considered the idea of mobile networks and multiband multihop transmissions in WLANs.…”

Section: Literature Reviewmentioning

confidence: 99%

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Laghari

Shahwani

Shah

et al. 2021

Wireless Communications and Mobile Computing

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xCalamities such as earthquakes and tsunami affect communication services by devastating the communication network and electrical infrastructure. Multihop relay networks can be deployed to restore the communication environment quickly in catastrophe-stricken areas. However, performance in terms of throughput is affected by deploying the relay networks. In wireless local area networks (WLANs), the primary purpose of multiband transmission employing multihop relay networks is to increase the throughput and reduce the latency. In the future, wireless networks are believed to carry high throughput, more data rates, and less latency by expanding bandwidth-demanding applications. Simultaneous multiband transmission in WLAN systems is considered to increase the coverage area without power escalation. Due to the inherent characteristics of different bands and channel conditions, transmission rates tend to be different. The impact of such conditions may cater to the disproportional distribution of data among bands, causing some of the bands to be overwhelmed, which incurs buffer overflow and packet loss. In contrast, the channel capacity of some of the bands remains underutilized. In this paper, we consider the channel conditions and transmission rates of each band on either side of the relay to address the problems mentioned above. Furthermore, this paper proposes a load distribution-based end-to-end traffic scheduling technique to improve system performance. The simulation results demonstrate the effectiveness of our proposed method with maximizing throughput and minimizing end-to-end delay.

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Section: Literature Reviewmentioning

confidence: 99%

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Laghari

Shahwani

Shah

et al. 2021

Wireless Communications and Mobile Computing

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show abstract

“…Capacity improvement through channel switching with in a band has been extensively studied. Some valuable insights into channel switching within a single band are provided in [8], [9], [10], [11], [12]. To date, many researchers have considered the idea of multiband transmission in WLANs and cellular networks.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The curve for the proposed scheme is a straight line because only a minute portion of the traffic load is switched from one band to another. Significant portion of this delay is the interface switching delay as per equation (12), while the actual frame processing delay is almost negligible due to which the curve is appearing to be a straight line. Total switching delay for TDF scheme is well above 6 µs whereas it is only 1.5 µs for our proposed scheme.…”

Section: ) Switching Delaymentioning

confidence: 99%

Combine and Conquer: Simultaneous Transmission Over Multiband Multi-Hop WLAN Systems

Ali

2021

IEEE Access

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Multi-hop relay networks are deployed to restore communication environment in the catastrophe stricken area. Deployment of these networks are fast and easy but performance is low due to the relay nature of the networks. Given the surge of bandwidth hungry application, performance such as high data rates, high throughput and ultra-low latency is a concern in traditional one-hop Wireless Local Area Networks (WLANs) as well. Simultaneous transmission over multiple bands is a compendious solution that has the potential to significantly boost data rates and flexibility. It will enhance the network utilization and performance of high-bandwidth applications effectively and efficiently. However, there are certain challenges that need to be addressed before taking full advantage of simultaneous transmission over multiple bands. In this work, we outline the factors affecting the performance such as throughput and end-to-end delay in multiband multi-hop WLANs. Considering these factors, we design an end-to-end traffic scheduling technique that minimizes end-to-end delay and maximizes throughput. We design a mixed integer linear program (MILP) that optimizes end-to-end delay and maximizes throughput. Illustrative numerical results show that proposed technique effectively minimizes end-to-end delay and maximizes throughput.

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“…Quorum systems have been widely used for mutual exclusion in distributed systems [22] and for MAC protocol design in wireless networks [8,9,10,11,12,14,19]. A quorum system can be defined as follows [19].…”

Section: A Quorum Conceptmentioning

confidence: 99%

A Channel-Hopping Multichannel MAC Protocol for Mobile Ad Hoc Networks

Chao

Tsai

2014

IEEE Trans. Veh. Technol.

Self Cite

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Although multiple channels are supported in the physical layer, the IEEE 802.11 MAC layer mechanism is designed for using a single channel. Exploiting multiple channels enhances spatial reuse and reduces transmission collisions and thus improves network throughput. Designing a multi-channel MAC protocol is much more difficult than designing a singlechannel one. New challenges, such as the channel allocation problem and the missing receiver problem, must be overcome. Existing multi-channel MAC protocols suffer from either higher hardware cost (because of applying multiple transceivers) or lower channel utilization (due to limited transmission opportunity). In this paper, a fully distributed channel hopping solution, the Cyclic-Quorum-based Multi-channel (CQM) MAC protocol, is proposed. We use the cyclic quorum in a novel way and the proposed protocol has several attractive features. First, only a single transceiver is needed for each node. Second, any sender is guaranteed to meet its receiver in a short time. Third, each node's channel hopping sequence is derived from its node ID. This avoids exchanging control messages, such as each node's hopping sequence or available channel list. Fourth, multiple transmission pairs can accomplish handshaking simultaneously. The proposed protocol is simple and efficient. Simulation and real system implementation results verify that our mechanism is a promising multi-channel MAC protocol for mobile ad hoc networks.

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Load-aware channel hopping protocol design for mobile ad hoc networks

Cited by 5 publications

References 27 publications

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Combine and Conquer: Simultaneous Transmission Over Multiband Multi-Hop WLAN Systems

A Channel-Hopping Multichannel MAC Protocol for Mobile Ad Hoc Networks

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