IEEE 802.15.4 MAC/PHY
Analysis of superframe duration adjustment scheme for IEEE 802 15 4 networks
... The IEEE 802.15.4 MAC supports not only contention-based mechanism in contention access period (CAP) but also guaranteed time slot (GTS) in contention free period (CFP) scheme under ...
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Implementation of IEEE 802 15 4 PHY Using Matlab
... automation. IEEE 802.15 .4 is a suitable standard for low rate personal area network such as wireless sensor networks due to its low complexity and low power ...
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Performance Analysis of IEEE 802 15 4
... by IEEE, specifies physical layer (PHY) and medium access control sub- layer (MAC) specification to support highly resource constrained devices with very limited transmission ...two PHY options ...
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Adaptive Resource Allocation for Wireless Body Sensor Networks
... node and the coordinator [14, 111, 171]. Another signicant property of WBSNs is their group mobility. This means that, although each node in a WBSN has limited independent internal mobility, all sensor nodes and the ...
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Low Bit Error Rate Based Communication by IEEE 802 15 4
... The IEEE 802.11 standard [3,5,8] defines both the physical (PHY) and medium access control (MAC) layer protocols for ...The IEEE 802.11 MAC layer specifications, common to all PHYs and ...
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Evaluating the Effect of Signal to Noise Ratio Based on symbol for the IEEE 802 15 4 PHY Level Packet Loss Rate
... [1]. IEEE 802.15.4 defines low power and low data rate PHY and MAC protocols suitable for use in wireless sensor ...The PHY layer protocol defines operation in several frequency bands, the ...
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An efficient backoff algorithm for IEEE 802 15 4 with MAC techniques in slotted CSMA/CA networks
... Medium Access Control (MAC) plays an significant part in the performance of WSNs especially in the case of contention based protocols such as IEEE 802.15.4 standard [6]. It is established standard ...
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MAC Security and Security Overhead Analysis in the IEEE 802 15 4 Wireless Sensor Networks
... The IEEE 802.15.4 specification [1] defines medium access control (MAC) layer and phys- ical (PHY) layer targeted for the low rate wireless personal area networks (LR-WPAN) using short distance ...
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Analysis of superframe adjustment and beacon transmission for IEEE 802 15 4 cluster tree networks
... Wireless sensor networks based on the IEEE 802.15.4 standard have been designed to specify the physical layer (PHY) and medium access control (MAC) sublayer for low power consumption, short ...
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MAC Layer Evaluation using IEEE 802 15 4
... Web Server’s Performance is based upon IEEE 802.15.4 for WSNs with an appropriate value to the attributes which belong to different types of devices, is relied on the suitable selection of a GTS mechanism. The ...
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A reliable framework for communication in internet of smart devices using IEEE 802 15 4
... The proposed research is a step forward in wireless networking and IoT where we propose new reliability framework based on IEEE802.15.4 for communicating in internet of smart devices. The Wireless communication is the ...
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Online Full Text
... hybrid MAC, and dimensionless expressions depicting throughput and delay have been derived by the ...hybrid MAC as a function of packet collision probability and high priority station count are ...
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Performance Analysis with Modulations in Web Server of IEEE 802 15 4 for WSNs
... The Figure 4 depicts the 0.001056, 0.001056 and 0.000704 collisions that the radio receiver respectively. Moreover, observation is also made that collisions occurs more for DPSK and MSK while the least in case of ...
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Light weight Security Architecture for IEEE 802 15 4 Body Area Networks
... In IEEE 802.15.4 Body Area Networks (BAN), security solution is required for data confidentiality, authentication and integrity at low cost. But the existing solutions for WBAN either provide any one of the ...
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A Study Analysis of IEEE 802 15 4 Zigbee based WSN in Campus
... 104256 48012. 444 Overall, from the comparison table for the four scenarios, we found that the scenario-4, four offices with four nodes each and employed separate coordinators (total= 4 in number) forms the ...
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Design and Implementation of a Testbed for IEEE 802 15 4 (Zigbee) Performance Measurements
... One possible outdoor application of ZigBee is environ- mental monitoring, which would be beneficial to scientists and the agricultural industry. ZigBee would provide the ability to network a wide range of sensors which ...
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Reducing the MAC Latency for IEEE 802 11 Vehicular Internet Access
... 3.2. Scanning Delay. Due to the scanning delay and the high mobility of vehicles (esp. on highways); the total amount of time connected to an AP is generally small compared to static users. As shown as a plot of a ...
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Wireless Personal Area Networks Performance, Interconnection, & Security with IEEE 802 15 4 pdf
... Node specialization. Another important distinction is related to the role of individual nodes. An ad hoc network allows its nodes to choose the specific role, or roles, they would like to play – i.e., data source, ...
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Multi channel Utilization Algorithms for IEEE 802 15 4 based Wireless Network: A Survey
... multi-channel MAC approaches, adaptive channel allocation schemes, and multi-channel utilization in large scale ...standard IEEE 802.15.4 MAC protocol, the last two categories make use of the current ...
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BOB RED queue management for IEEE 802 15 4 wireless sensor networks
... Multimedia services over resource constrained wireless sensor networks (WSNs) face a performance bottleneck issue from the gateway node to the sink node. Therefore, the queue management at the gateway node is crucial for ...
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