Extending the Lora modulation to add parallel channels and improve the LoRaWAN network performance

Wireless security is the prevention of unauthorized access to computers using wireless networks .The trends in wireless networks over the last few years is same as growth of internet. Wireless networks have reduced the human intervention for accessing data at various sites .It is achieved by replacing wired infrastructure with wireless infrastructure. Some of the key challenges in wireless networks are Signal weakening, movement, increase data rate, minimizing size and cost, security of user and QoS (Quality of service) parameters... The goal of this paper is to minimize challenges that are in way of our understanding of wireless network and wireless network performance.

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COORDINATED DISTRIBUTED SCHEDULING IN WIRELESS MESH NETWORK

INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY ◽

10.24297/ijct.v3i3a.2940 ◽

2012 ◽

Vol 3 (3) ◽

pp. 368-374

Author(s):

Usha Kumari ◽

Udai Shankar

Keyword(s):

Network Performance ◽

Mesh Networks ◽

Mac Protocol ◽

Scheduling Algorithm ◽

Ieee 802.16 ◽

Distributed Scheduling ◽

Mesh Network ◽

Fourth Generation ◽

Network Nodes ◽

Wireless Mesh

IEEE 802.16 based wireless mesh networks (WMNs) are a promising broadband access solution to support flexibility, cost effectiveness and fast deployment of the fourth generation infrastructure based wireless networks. Reducing the time for channel establishment is critical for low latency/interactive Applications. According to IEEE 802.16 MAC protocol, there are three scheduling algorithms for assigning TDMA slots to each network node: centralized and distributed the distributed is further divided into two operational modes coordinated distributed and uncoordinated distributed. In coordinated distributed scheduling algorithm, network nodes have to transmit scheduling message in order to inform other nodes about their transfer schedule. In this paper a new approach is proposed to improve coordinated distributed scheduling efficiency in IEEE 802.16 mesh mode, with respect to three parameter Throughput, Average end to end delay and Normalized Overhead. For evaluating the proposed networks efficiency, several extensive simulations are performed in various network configurations and the most important system parameters which affect the network performance are analyzed

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The importance of social relations of managers for the network performance

Organization and Management ◽

10.2478/oam-2013-0028 ◽

2013 ◽

Vol 2013 (3 (156)) ◽

Author(s):

Patrycja Klimas

Keyword(s):

Social Relations ◽

Network Performance

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MODEL DISTRIBUSI PERJALANAN PENDUDUK UNTUK PENENTUAN KORIDOR ‘LRT’ DI PULAU BATAM

Jurnal Sains dan Teknologi Indonesia ◽

10.29122/jsti.v12i3.856 ◽

2013 ◽

Vol 12 (3) ◽

Author(s):

Djoko Prijo Utomo

Keyword(s):

Network Performance ◽

Travel Demand ◽

Mass Transit ◽

Distribution Model ◽

Economic Activities ◽

Transit System ◽

Trip Distribution ◽

Home Interview ◽

Interview Survey ◽

Private Car

In consequence of the increasing of regional economic activities in Pulau Batam, a reliable transportation system is required. Decreasing road network performance as a result of increasing traffic volume needs a strategic planning to anticipate the worsening condition in the future. One of the solutions is by providing mass transit system which is expected to attract private car users. Therefore, determination of potential corridor of mass transit system need to be identified so that the system provide better accessibility. Trip pattern in Pulau Batam must be known by developing trip distribution model. The trip distribution model is calibrated using origin-destination (O-D) data that is based on home interview survey. The validated model will be used to forecast and simulate travel demand onto transport network. Result of model calibration process shows mean trip length difference between model and survey is equal 0.141 %. From simulation of trip assignment is obtained that potential corridor for mass transit system using LRT is Batu Ampar – Batu Aji via Muka Kuning. Passenger forecast in the year 2030 is 193,990 passenger/day (2 directions).

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Investigating the Analysis of Power Saving Mode in IEEE 802.11 for Wi-Fi Communication

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol6.iss3.100 ◽

2018 ◽

Vol 6 (3) ◽

pp. 13-19

Author(s):

Isam Aameer Ibrahim ◽

Haider TH Salim ◽

Hasan F. Khazaal

Keyword(s):

Ieee 802.11 ◽

Network Performance ◽

Power Saving ◽

Packet Delay ◽

Access Point ◽

Battery Life ◽

Global Issues ◽

Time Ratio ◽

Power Saving Mode ◽

Saving Mode

One of the major global issues today is energy consumption. Consequently, power management was introduced in various communication technologies. For IEEE 802.11wireless communication, there is a Power Saving Mode scheme (PSM) for increase the battery life of cell phone. In this PSM, there are two key parameters: beacon period interval (BI) and listen interval(LI). In most work these values are chosen arbitrary. Here, a scheme to determine the optimal BI and LI for accomplishing the most astounding conceivable vitality proficiency is introduced. This is implemented with the application of a numerical sample to the standard IEEE 802.11 PSM and Access Point-PSM (AP-PSM) schemes. To ensure the quality of network performance analysis on the normal and change of parcel delays is doing. The well-known queuing (M/G/I) model with bulk services are utilized. After the implementation of the proposed analysis, “maximum rest plan time ratio optimal Sleep Scheme (OSS)” which is when participate stations stay in the doze mode it can be determined. In this research shows that the optimal BI and LI produce optimal OSS time ratio scheme also achieved optimal average and variance of packet delay.

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