Constructing an optimally balanced tree to maximize data throughput with multiple channels

Nguyen, Trang Tien; Oh, Hoon

doi:10.1007/s11276-017-1550-x

Cited by 4 publications

(6 citation statements)

References 18 publications

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“…Some studies work on improving high reliability and low latency of multi-hop network, such as DeAMON [9], DiSCA [10], PC-LLF [11], CLLF [12], SCSMA [13], SSMADBTC [14], DEDAS-MC [15,16], Multi-hop LoRa linear protocol [8]:…”

Section: Introductionmentioning

confidence: 99%

“…SSMADBTC [14] is based on a slotted sense multiple access (SSMA) mechanism, in which a sharable slot is allocated to each tree level, and the nodes at the tree level compete to send data to their respective parents using Carrier Sense Multiple Access (CSMA) within the sharable slot. Data transmission is performed progressively, starting with the nodes at the highest level and proceeding to those at level 2 (the lowest sending level).…”

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confidence: 99%

“…SSMADBTC [14] proposed an optimally balanced tree construction with distributed scheduling. First, the sink node transmits the Tree Construction Request (TCR) packet to start the protocol.…”

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confidence: 99%

“…In this case, the end-to-end latency is lowest because node 6 will have a hop-count of 2. In data aggregation, because a minimized packet size is important, and the parent choice is important to minimize the packet size [14], we propose Rule 1 for choosing a parent to minimize packet size. In the example, we assume that every node has 60 bytes as the data size.…”

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confidence: 99%

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Multi-Hop LoRa Network Protocol with Minimized Latency

Loc

Kim

2020

Energies

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LoRa (Long Range) is a long-range communications capacity with chirp spread spectrum modulation. It has been developed for Internet of Things (IoT) applications for long-distance and low power consumption. Some authors proposed LoRa protocols such as LoRaWAN, LoRaBlink, DQ-LoRa and the multi-hop LoRa network with linear topology; however, these protocols have disadvantages. In this paper, we propose a minimized latency multi-hop LoRa network protocol that is collision-free with low latency to improve on the disadvantages. First, in the proposed protocol, tree topology is constructed by exchanging packets between LoRa nodes and the sink node. During this period, a timeslot and channel are assigned to each tree link, over which LoRa nodes communicate with their parent node and which is collision-free with its neighbor nodes. After the tree construction period, LoRa nodes start data transmission using the timeslot and channel that they have already been assigned to in the tree construction period. We developed the proposed protocol in a LoRa node prototype using the MultiTech mDot module, and we conducted experiments at Ulsan University. The results show that the proposed protocol provides high reliability, parallel transmissions, a minimized number of timeslots assigned for all the links in the network, a minimized packet size, and low latency.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Multi-Hop LoRa Network Protocol with Minimized Latency

Loc

Kim

2020

Energies

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“…There are studies focused on reducing the latency, which can be classified into two categories: scheduling methods [1,[7][8][9] and random access methods [2,10]. Scheduling methods can reduce the latency based on eliminating the collisions among the nodes in the network, using parallel transmissions to reduce slot frame size, and using data aggregation to reduce number of transmissions.…”

Section: Introductionmentioning

confidence: 99%

A Scheduling Method Based on Packet Combination to Improve End-to-End Delay in TSCH Networks with Constrained Latency

Loc

Kim

2020

Energies

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Wireless sensor networks (WSN) are networks for gathering data from sensor nodes that have been applied in industry for a long time. In real-time industrial applications with tight latencies, schedulability is one of the most critical issues. Some authors have proposed centralized scheduling algorithms for time-slotted channel hopping (TSCH) networks for real-time applications in industry, however, they have some disadvantages such as schedulability and high data traffic. In this paper, we improve the schedulability, latency, data traffic by dynamically prioritizing packets which are based on number duplex-conflicts and dynamically combining the packets. As a result, we show that the packet-combining algorithm improves schedulability and minimizes the amount of traffic in a network when compared with existing approaches.

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A Smart Multichannel Slotted Sense Multiple Access Protocol for Industrial Wireless Sensor Networks

Nguyen

2022

IEEE Internet Things J.

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Constructing an optimally balanced tree to maximize data throughput with multiple channels

Cited by 4 publications

References 18 publications

Multi-Hop LoRa Network Protocol with Minimized Latency

Multi-Hop LoRa Network Protocol with Minimized Latency

A Scheduling Method Based on Packet Combination to Improve End-to-End Delay in TSCH Networks with Constrained Latency

A Smart Multichannel Slotted Sense Multiple Access Protocol for Industrial Wireless Sensor Networks

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