scholarly journals Integration of Steerable Smart Antennas to IETF 6TiSCH Protocol for High Reliability Wireless IoT Networks

2021 ◽  
Author(s):  
Sercan Kulcu ◽  
Sedat Gormus ◽  
Yichao Jin
Keyword(s):  
Smart Antenna ◽  
High Reliability ◽  
Smart Antennas ◽  
Low Complexity ◽  
Network Capacity ◽  
Directional Antennas ◽  
Seamless Integration ◽  
Delivery Performance ◽  
Industrial Iot ◽  
Overall Performance

Steerable directional antennas are increasingly utilised to improve the overall performance of the traditional wireless sensor networks. Steerable directional antenna based networking solutions increase the network capacity by providing a longer range of transmission and reduced interference as compared to networking solutions with omni-directional antennas. However, the use of smart antennas requires complex algorithms and such algorithms may not be easily leveraged in low power Internet of Things (IoT) networks. This study presents mechanisms for integrating low complexity smart antenna solutions into IETF 6TiSCH protocol with the aim of creating scalable and reliable industrial IoT networks. The solution defines extensions to MAC layer and scheduling mechanisms of IETF 6TiSCH protocol to enable its seamless integration with low complexity steerable smart antennas. The results of this study show that smart antenna enabled 6TiSCH protocol stack outperforms the legacy 6TiSCH stack in terms of data delivery performance especially in high density scenarios.<br>

scholarly journals Integration of Steerable Smart Antennas to IETF 6TiSCH Protocol for High Reliability Wireless IoT Networks

2021 ◽  
Author(s):  
Sercan Kulcu ◽  
Sedat Gormus
Keyword(s):  
Smart Antenna ◽  
High Reliability ◽  
Smart Antennas ◽  
Low Complexity ◽  
Network Capacity ◽  
Directional Antennas ◽  
Seamless Integration ◽  
Delivery Performance ◽  
Industrial Iot ◽  
Overall Performance

Smart antennas are increasingly utilised to improve the overall performance of the traditional wireless networks. Smart antenna based networking solutions increase the network capacity by providing a longer range of transmission and reducing interference as compared to networking solutions with omni-directional antennas. However, the use of smart antennas requires complex algorithms and such algorithms may not be easily leveraged in low power Internet of Things (IoT) networks. This study presents mechanisms for integrating low complexity smart antenna solutions into IETF 6TiSCH protocol with the aim of creating scalable and reliable industrial IoT networks. The solution defines extensions to MAC layer and scheduling mechanisms of IETF 6TiSCH protocol to enable its seamless integration with low complexity steerable smart antennas. The results of this study show that smart antenna enabled 6TiSCH protocol stack outperforms the legacy 6TiSCH stack in terms of data delivery performance especially in high density scenarios.<br>

scholarly journals Integration of Steerable Smart Antennas to IETF 6TiSCH Protocol for High Reliability Wireless IoT Networks

2021 ◽  
Author(s):  
Sercan Kulcu ◽  
Sedat Gormus
Keyword(s):  
Smart Antenna ◽  
High Reliability ◽  
Smart Antennas ◽  
Low Complexity ◽  
Network Capacity ◽  
Directional Antennas ◽  
Seamless Integration ◽  
Delivery Performance ◽  
Industrial Iot ◽  
Overall Performance

Smart antennas are increasingly utilised to improve the overall performance of the traditional wireless networks. Smart antenna based networking solutions increase the network capacity by providing a longer range of transmission and reducing interference as compared to networking solutions with omni-directional antennas. However, the use of smart antennas requires complex algorithms and such algorithms may not be easily leveraged in low power Internet of Things (IoT) networks. This study presents mechanisms for integrating low complexity smart antenna solutions into IETF 6TiSCH protocol with the aim of creating scalable and reliable industrial IoT networks. The solution defines extensions to MAC layer and scheduling mechanisms of IETF 6TiSCH protocol to enable its seamless integration with low complexity steerable smart antennas. The results of this study show that smart antenna enabled 6TiSCH protocol stack outperforms the legacy 6TiSCH stack in terms of data delivery performance especially in high density scenarios.<br>

scholarly journals Unification of Broadband and Broadcast Mobile Services using Cognitive Radio

2021 ◽  
pp. 71-75
Author(s):  
V. Annapoorani ◽  
S. Sureshkumar ◽  
Srisaravanapathimurugesan ◽  
M. Manoj ◽  
K. Prabhu
Keyword(s):  
Cognitive Radio ◽  
Dynamic Spectrum Access ◽  
Large Scale ◽  
High Reliability ◽  
Multiple Input Multiple Output ◽  
Future Generation ◽  
Research Areas ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Overall Performance

The networks in future generation uses the confluence of multi-media, broadband, and broadcast services, Cognitive Radio (CR) networks are located as a preferred paradigm to bring up with spectrum functionality traumatic conditions. CRS addresses the ones troubles via dynamic spectrum access. However, the precept traumatic conditions faced through manner of manner of the CR pertain to accomplishing spectrum overall performance. At the end, spectrum overall performance improvement models based on spectrum sensing and sharing models have attracted quite a few research hobby in modern-day years, which incorporates CR mastering models, network densification architectures, and Massive Multiple Input Multiple Output (MIMO), and beamforming techniques. This paper deals with a survey of modern CR spectrum overall improvement performance models and techniques which helps ultra-high reliability with low latency communications which might be resilient to surges in web page site visitors and competition for spectrum. These models and techniques, mainly speaks about permit a big form of functionality beginning from extra superb mobiliary broadband to large-scale Internet of Things (IoT) type communications. It also provides a research correlation for many of the regular periods of a spectrum block, as well as the realistic statistics rate, the models which are used in this paper are applicable in an ultra-high frequency band. This study provides a super compare of CRs and direction for future investigations into newly identified 5G research areas, such as in business enterprise and academia.

scholarly journals Data Publish/Subscribe with Network Coding in DTN

2016 ◽  
Vol 12 (06) ◽  
pp. 51
Author(s):  
Xia Yi ◽  
Deng Guanghong
Keyword(s):  
Network Coding ◽  
Ant Colony Algorithm ◽  
Random Network ◽  
Large Data ◽  
Network Capacity ◽  
Delay Tolerant Network ◽  
Delivery Performance ◽  
Coding Method ◽  
Delay Tolerant ◽  
Working Out

A data Publish/Subscribe method with network coding (DPS-NC) used in delay tolerant network is proposed. Based on the publish/subscribe mechanism, the topic data were encoded and transmit with random network coding method, which can take full advantage of the network capacity to multicast. At the same time, for working out the problem of large data redundancy and vast invalid de-liveries in the network coding broadcast process, a packet routing scheme based on ant colony algorithm was brought. In the end, some simulation experiments are carried out and results show that the DPS-NC method can get better delivery performance.

scholarly journals Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator

Micromachines ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 361 ◽  
Author(s):  
Natheer Almtireen ◽  
Jürgen J. Brandner ◽  
Jan G. Korvink
Keyword(s):  
High Reliability ◽  
Low Cost ◽  
Evaluation Model ◽  
Volumetric Flow Rate ◽  
Cooling Capacity ◽  
Heating And Cooling ◽  
The Matrix ◽  
Overall Performance ◽  
Application Requirements ◽  
Vital Element

Regenerative cryocoolers such as Stirling, Gifford–McMahon, and pulse tube cryocoolers possess great merits such as small size, low cost, high reliability, and good cooling capacity. These merits led them to meet many IR and superconducting based application requirements. The regenerator is a vital element in these closed-cycle cryocoolers, but the overall performance depends strongly on the effectiveness of the regenerator. This paper presents a one-dimensional numerical analysis for the idealized thermal equations of the matrix and the working gas inside the regenerator. The algorithm predicts the temperature profiles for the gas during the heating and cooling periods, along with the matrix nodal temperatures. It examines the effect of the regenerator’s length and diameter, the matrix’s geometric parameters, the number of heat transfer units, and the volumetric flow rate, on the performance of an ideal regenerator. This paper proposes a 2D axisymmetric CFD model to evaluate the ideal regenerator model and to validate its findings.

Joint Human-Automation Decision Making in Road Traffic Management

2017 ◽  
Vol 61 (1) ◽  
pp. 385-389 ◽  
Author(s):  
Natan Morar ◽  
Chris Baber
Keyword(s):  
Decision Making ◽  
Traffic Management ◽  
Road Traffic ◽  
High Reliability ◽  
Traffic Monitoring ◽  
Human Intervention ◽  
Joint Decision ◽  
Monitoring Task ◽  
Reliability Level ◽  
Overall Performance

In this paper we explore automation bias in terms of joint decision making between humans and automation. In an experiment, participants made decisions, and indicated the reason for this decision, in a road traffic monitoring task with the aid of automation of varying reliability (i.e., 25% or 81%). Reliability level had a clear impact on the user’s behavior: at low reliability, participants ignored automation suggestion and rely on their own decision making, whereas in the high reliability condition, participants tended to accept the automation suggestion (even if this was incorrect). Overall, performance is higher as a result of the human intervention that would be expected from automation alone, i.e., accuracy is in the region of 87-96% on all conditions. Performance is affected by the order in which the human and automation give their answers and how much detail they are required to provide. We consider these results in terms of a theory of joint decision making. [156 words]

Low-Complexity Multiplication Using Complement and Signed-Digit Recoding Methods

2014 ◽  
Vol 619 ◽  
pp. 342-346
Author(s):  
Te Jen Chang ◽  
Ping Sheng Huang ◽  
Shan Jen Cheng ◽  
Ching Yin Chen ◽  
I Hui Pan
Keyword(s):  
Computational Complexity ◽  
Low Complexity ◽  
Fast Multiplication ◽  
Speed Up ◽  
Overall Performance ◽  
Representation Method ◽  
Computing Method

In this paper, a fast multiplication computing method utilizing the complement representation method and canonical recoding technique is proposed. By performing complements and canonical recoding technique, the number of partial products can be reduced. Based on these techniques, we propose algorithm provides an efficient multiplication method. On average, our proposed algorithm to reduce the number of k-bit additions from (0.25k+logk/k+2.5) to (k/6 +logk/k+2.5), where k is the bit-length of the multiplicand A and multiplier B. We can therefore efficiently speed up the overall performance of the multiplication. Moreover, if we use the new proposes to compute common-multiplicand multiplication, the computational complexity can be reduced from (0.5 k+2 logk/k+5) to (k/3+2 logk/k+5) k-bit additions.

scholarly journals On the Use of LoRaWAN for Indoor Industrial IoT Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Michele Luvisotto ◽  
Federico Tramarin ◽  
Lorenzo Vangelista ◽  
Stefano Vitturi
Keyword(s):  
Internet Of Things ◽  
Communication Systems ◽  
Ieee 802.15.4 ◽  
High Reliability ◽  
General Description ◽  
Iot Applications ◽  
Industrial Internet ◽  
Industrial Iot ◽  
Monitoring Applications ◽  
Industrial Monitoring

Low-Power Wide-Area Networks (LPWANs) have recently emerged as appealing communication systems in the context of the Internet of Things (IoT). Particularly, they proved effective in typical IoT applications such as environmental monitoring and smart metering. Such networks, however, have a great potential also in the industrial scenario and, hence, in the context of the Industrial Internet of Things (IIoT), which represents a dramatically growing field of application. In this paper we focus on a specific LPWAN, namely, LoRaWAN, and provide an assessment of its performance for typical IIoT employments such as those represented by indoor industrial monitoring applications. In detail, after a general description of LoRaWAN, we discuss how to set some of its parameters in order to achieve the best performance in the considered industrial scenario. Subsequently we present the outcomes of a performance assessment, based on realistic simulations, aimed at evaluating the behavior of LoRaWAN for industrial monitoring applications. Moreover, the paper proposes a comparison with the IEEE 802.15.4 network protocol, which is often adopted in similar application contexts. The obtained results confirm that LoRaWAN can be considered as a strongly viable opportunity, since it is able to provide high reliability and timeliness, while ensuring very low energy consumption.

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