Fig 1 - uploaded by Nemi Chand Barwar
Content may be subject to copyright.
![Layered Protocol Stack of IEEE 802.15.4 The Physical layer defined by IEEE802.15.4 is responsible for activation and deactivation of the radio transceiver, energy detection (ED), link quality indication (LQI), channel selection, clear channel assessment (CCA) and transmitting as well as receiving packets across the physical medium. At the physical layer, Zigbee operates on three different frequency bands 2.4GHz, 915 MHz and 868 MHz's [15]. The supported data rate is 250 kbps at 2.4GHz with offset quadrature phase shift keying (OQPSK) modulation, 40 kbps at 915 MHz and 20 kbps at 868 MHz with binary phase shift keying (BPSK) modulation. Total of 27 channels is utilized which includes 1 channel between 868 and 868.6 MHz, 10 channels between 902.0 and 928.04 MHz and 16 channels between 2.4 and 2.4835 GHz. Several channels in different frequency bands make it possible to relocate within the available spectrum. The MAC layer defined by IEEE 802.15.4 controls the access to the communication channel and provides flow control through acknowledgements and retransmissions. It also controls frame validation, beacon management, device synchronization, guarantees time slot management and handles nodes association and disassociation.](profile/Nemi-Barwar/publication/283042558/figure/fig1/AS:486972612452352@1493114726254/Layered-Protocol-Stack-of-IEEE-802154-The-Physical-layer-defined-by-IEEE802154-is.png)
Layered Protocol Stack of IEEE 802.15.4 The Physical layer defined by IEEE802.15.4 is responsible for activation and deactivation of the radio transceiver, energy detection (ED), link quality indication (LQI), channel selection, clear channel assessment (CCA) and transmitting as well as receiving packets across the physical medium. At the physical layer, Zigbee operates on three different frequency bands 2.4GHz, 915 MHz and 868 MHz's [15]. The supported data rate is 250 kbps at 2.4GHz with offset quadrature phase shift keying (OQPSK) modulation, 40 kbps at 915 MHz and 20 kbps at 868 MHz with binary phase shift keying (BPSK) modulation. Total of 27 channels is utilized which includes 1 channel between 868 and 868.6 MHz, 10 channels between 902.0 and 928.04 MHz and 16 channels between 2.4 and 2.4835 GHz. Several channels in different frequency bands make it possible to relocate within the available spectrum. The MAC layer defined by IEEE 802.15.4 controls the access to the communication channel and provides flow control through acknowledgements and retransmissions. It also controls frame validation, beacon management, device synchronization, guarantees time slot management and handles nodes association and disassociation.
Source publication
Zigbee is an open specification developed by Zigbee Alliance build on the top of IEEE802.15.4 Physical and Media Access Control layer standard, which is one of the global wireless standards of communication protocol for Low-Rate Wireless Personal Area Networks (LR-WPAN). It aims at low power consumption, low data rate, low cost, short range and fle...
Similar publications
In this work, we propose a multi-hop protocol for wireless personal area networks In particular, both distance and residual energy taken into consideration to select the primary node or forwarder. The cost function selects a parent node which has high residual energy and minimum distance to the sink. Residual energy parameters balance the energy co...
Wireless Sensor Network (WSN) is a special type of communication medium through distributed
sensor nodes. Popular wireless sensor nodes like ZigBee have splendid interoperability after IEEE
802.15.4 standardization in the domain of wireless personal area network (WPAN). ZigBee has
another great feature mobility that makes the ZigBee network more ve...
Thanks to IEEE 802.15.4 defining the operation of low-rate wireless personal area networks (LR-WPANs), the door is open for localizing sensor nodes using tiny, low power digital radios such as Zigbee. In this paper, we propose a three-dimensional (3D) localization scheme based on well-known loop invariant for division algorithm. Parametric points a...
This paper presents an efficient burst error spreading tool. Also, it studies a vital issue in wireless communications, which is the transmission of images over wireless networks. IEEE ZigBee 802.15.4 is a short-range communication standard that could be used for small distance multimedia transmissions. In fact, the ZigBee network is a Wireless Per...
IEEE 802.15.4 is the first global standard for compatible interconnection for data
communication devices using low-data-rate, low-power, and low-complexity short-range radio
frequency transmissions in a wireless personal area network (WPANs). ZigBee is a protocol
specification in conjunction with IEEE 802.15.4 standardization. In this paper are pre...
Citations
... In contrast to the 802.11 standards working in the 2.4/5 GHz band, 802.15.4 operates on several different bands depending on the region, e.g., Europe works on various bands different to North America [6]. WiMAX (which stands for Worldwide Interoperability for Microwave Access) is a wireless data transmission technology based on IEEE 802.16 standard to provide broadband wireless access (see Figure 3 for architecture details). ...
... ZigBee protocol architecture[6]. ...
Present-day technologies used in SHM (Structural Health Monitoring) systems in many implementations are based on wireless sensor networks (WSN). In the context of the continuous development of these systems, the costs of the elements that form the monitoring system are decreasing. In this situation, the challenge is to select the optimal number of sensors and the network architecture, depending on the wireless system's other parameters and requirements. It is a challenging task for WSN to provide scalability to cover a large area, fault tolerance, transmission reliability , and energy efficiency when no events are detected. In this article, fundamental issues concerning wireless communication in structural health monitoring systems (SHM) in the context of non-destructive testing sensors (NDT) were presented. Wireless technology developments in several crucial areas were also presented, and these include engineering facilities such as aviation and wind turbine systems as well as bridges and associated engineering facilities.
