A Comprehensive Analysis of Quality of Service (QoS) in ZigBee Network through Mobile and Fixed Node

The standard specification of IEEE 802.15.4 is called ZigBee Propocol. ZigBee protocol required security, low data transfer rate, power efficient network. In addition, the ZigBee mobility function makes the ZigBee network more in-teractive and multi-purpose. The ZigBee mobile node has a significant effect on network parameters, namely MAC delay, end-to-end delay, MAC throughput and network load. However, a particular significant ZigBee node affects network data traffic and reduces the strength of the Quality of Service (QoS). The key issues are to analyze the QoS in order to increase overall performance of the network. The study proposes a ZigBee network with the mobile node and fixed node based on a variety of MAC layer settings. The Riverbed Network Simulator (Academic Modeler Release 17.5) is used for configuring and simulating the ZigBee network in a variety of conditions. The simulation results show that ZigBee with a fixed node performs better than the ZigBee mobile node. The ZigBee network with fixed node produces a lower network load and a high ratio of successfully transmitted data. The analysis of this study allows the ZigBee network to be better designed.

pital automation and heat detection, intelligent energy management where light is connected via the ZigBee network.
In addition, an extended battery is available through either method. One is the extended network connection that is increased safely draining the battery and draining the battery even more slowly. ZigBee is completely trustworthy. Because it works with a "handshaking" data transfer protocol. The maximum packet size in IEEE ZigBee is 133 octets, including all headings. The ZigBee network is set up ZigBee routers, ZigBee terminals and a ZigBee coordinator. A co-ordinator is a specific type of router. The coordinating body is responsible for setting up a network. It also has the responsibility to decide how to secure a network. The coordinator is employed within a network. The coordinator used the backbone of the network or a link to another network. Also, there is precisely a ZigBee coordinator that stores information on the network. ZigBee routers are responsible for routing traffic on multiple nodes. He is also responsible for the reception or storage of messages for his child nodes. ZigBee terminals are not delivering traffic. It is responsible for requesting all pending messages from its parent node (either the coordinator or a router); it is incapable data transfer with alternative devices. All ZigBee devices are either mobile or fixed. Mobile devices carry out the concept of mobility in the ZigBee network.
A mobile node which is an Internet-connected device to a location and an Internet connection point which can be changed frequently. A mobile node which moves from one network or sub-network to another and continuously modifies the IP address of the nodes. In the fixed node in which the location of the connected devices and the Internet connection point are attached.
Previously, several studies have been implemented in the network to evaluate a mobile ZigBee network such as mobility support in ZigBee network has been studied [1], the effect of mobile Coordinator in ZigBee network [2]. The distinction between the ZigBee mobility concepts was also analyzed on the basis of the randomized and octagonal mobility configuration model [3]. Chai-Keong describes the mobile wireless network protocol and its system in the book [4]. The authors [5] propose a framework for the deployment of ZigBee nodes and tree construction in order to increase the rate of data transmission and attenuate the effects of packet loss due to node mobility. Network performance is analyzed with ZigBee terminals, ZigBee coordinator and ZigBee routers failing [6]. As far as we know, the performance of ZigBee mobile nodes alongside fixed nodes has yet to be studied. This prompted us to develop a new simulation model for the effect of mobility within the ZigBee network alongside the fixed network. The paper shows the distinction between ZigBee fixed network and ZigBee mobile network performance based on an end-to-end delay, and MAC delay, MAC load, and throughput of the proposed network.
The remaining sections of this document are organized in the following manner. In Section 2, discuss work related to the ZigBee network. In Section 3, provide evidence of your research methodology. In Section 4, provide a new simulation model for ZigBee devices. Section 5 presents our simulation results. Section 6 draws conclusions with respect to future opportunities.

Related Work
The ZigBee network is used in different automation systems because of its flexibility. There are some articles that concentrate on the formation of ZigBee networks. Reported by Wang et al. [7], the pricing methodology is an efficient technique to differentiate the performance of devices with different priorities. The author has configured a ZigBee network with and without a rating approach with the topological tree. The paper concluded that shorter end-to-end delays in the system for higher priorities and lower priorities result in longer end-to-end delays.
The performance comparison of mobility concept of ZigBee network was analyzed on the basis of the randomized and the octagonal mobility configuration model in a document [3]. As a result of these mobility models, the ZigBee network adapts better. The performance of the ZigBee network in different network topologies is assessed and discussed in a further article by Sercan VANN and Ebubekir ERDEM [8]. The evaluation of end-to-end delay, throughput, MAC load and inbound traffic is provided. In this article, the author employed topologies of stars, trees and meshes. Document [9] assesses the ZigBee routing protocol based on priorities for WPAN. They improved routing efficiency by using priority in various modes. The improvement of the ZigBee routing protocol was analyzed in an article [10]. The comparison of the AODV routing protocol with ZBR (ZigBee Routing Protocol) is presented here. The article concludes that AODV has a lower delay than ZigBee's proposed routing. The study [11] focuses on average power consumption and the evolution of the coordination process delays the average of nodes moving through the network.
The QoS in the ZigBee network based on the deviated priority of nodes was discussed in a document [12]. Document [13] states that the network QoS is more visible than the non-priority network. Different areas are set up there and their priority is different. The network was analyzed based on end-to-end delay, MAC delay, MAC load, MAC speed. Xiaolong Li proposed an OPNET based mobile ZigBee sensor network in his article [14]. The study [15] shows that the use of the proposed architecture reduces the communication time and power consumption of moving nodes. The proposed model can significantly enhance performance in networking, routing and support of node mobility. Among Zig-Bee nodes such as mobile and fixed nodes, research on their ability to transmit and receive combined data is a domain to be studied extensively. Venkataramana proposes a transversal design to enhance QoS on ad-hoc mobile networks [16]. Study [17] reviewed mesh and cluster tree arrangements for reliable transmission. The performance of the system was analyzed on the basis of measurements. Experimental results [18] show that network performance is greatly improved by using various network topologies by changing node size, network load and ACK mode. Yu Gus's document [19] presents a study on well mobility management and the wireless sensor network. Study [20] proposed a study on mobility management protocols in WLNs using 6LoWPAN technology. A ZigBee protocol feasibility analysis of WDSN applications is provided in document [21]. The impact of various mobility models of a network configured specifically with ZigBee for WLN was analyzed in an article [22].
Kims et al. [23] an analysis of the performance of routing protocols in ZigBee wireless mesh networks is provided. Managing and controlling data transmission on high-mobility wireless networks was the subject of an article [24]. Paper [25] focused on the performance of the ZigBee network topology. Section [26] deals with the performance of the ZigBee network in the 5G network environment. Another study [27] deals with the simulation and evaluation of a wireless sensor network implementing the ZigBee protocol using the optimized network engineering tool in fixed and mobile networks. The book proposes a thorough study of the foundations and principles of wireless communication, with problems of homework throughout [28]. The writers [29] improved the design of the ZigBee wireless sensor network. Study [30] compares two MAC protocols-RI-MAC, an asynchronous service cycle MAC protocol initiated by the recipient. Furthermore, performance 802.15.4 Low Speed Personal Wireless Network (LR-WPAN) in a large-scale wireless sensor network (WSN) application is covered in [31]. Paolo et al. [32] proposed an overview of ZigBee, which provides an overview of energy efficiency, reporting, data management and security options adopted by the standard. The book shows the ZigBee protocol constructed over IEEE 802.15.4 is used in WSN [33]. All these documents have given us the incentive to research on the comparison of ZigBee mobile and fixed network.
And IoT is a new paradigm that improves living standards by connecting all devices. The author discusses the question of privacy and security for the IoT.
This study also analyses many different approaches and techniques for confidentiality requirements. Another study [34] examines mathematical models of the stability of the connection with the surviving energy for a route. This work also selects the optimum routing algorithm for connection stability and route energy consumption. On paper [35], the authors' analysis the performance of the Zig-Bee network for nuclear medicine applications. The results indicate the network parameters such as throughput, end-to-end delay and load, etc. According to [36], proposed an energy-efficient contention-based hybrid MAC protocol which is support emergency condition to barratry. The network parameters such as

Methodology
An

Simulation
The Riverbed Network simulator is highly effective software for simulating a network with different protocols. The Riverbed Academic Modeler tool is constructed from source code C and the programming language C with an impressive library workstation based on Riverbed processors.
Within this simulation, two different scenarios are designed. Figure 1   onto the surface of the network. However, Figure 2 shows that all routers, coordinators and terminals are fixed. The ultimate configuration includes 30 ZigBee nodes. It is made up of 5 routers, 24 terminals and a network coordinator. A ZigBee network coordinator that connects to the center of the network and can support up to 65,535 devices at once. Based on this incentive, a large-scale simulation was configured on 30 devices. The network size covers up to 500 square meters in the 2.45 GHz frequency bands. The mobile co-ordinator and the routers, travels at a fixed speed of 1 m/s. Figure 1 shows that coordinator and routers move randomly across the entire surface. Furthermore, Figure 2 shows that all devices are fixed.
Multiple key settings are used in the simulation. These include ACK status, packet size, data rate, re-transmission attempts, type of mobility, packet destination, the high rate of movement, traffic destination, etc. All of these items are held constant as per the definition in Table 1. The total simulation time for the two setups is 600 seconds.

End-to-end Delay
End-to-end delay is measured to pass a packet across the ZigBee network from one one device to another device in the application layer. As such, the elements of delay:- The total time from beginning to end depends on the number of links (N) and the router time. Each router has their own delivery time (d trans ), propagation time (d prop ), and processing time (d proc ). When a node attempts to contact another node, the request is processed based on the node type. When a mobile node communicates with a mobile node, the total time from creation to receipt of the application packets generated by that node is high. When a fixed node communicates with a fixed node, the overall duration of this node is shorter.
The line graph shows the percentage of end-to-end delay for fixed and mobile node networks from 0 (s) to 350 (s) simulated time. One can see that in 0 (sec) and 250 (sec) the favorite attractions were the end-to-end delay for the fixed network. Between 130 (sec) and 180 (sec) the end-to-end delay was higher for the fixed-node network compared to mobile-node networks. Along with the average end-to-end time for the fixed-node network is lower than the mobile-node network.
During the 40 (sec) to 110 (sec) period, there was an average end-to-end delay of 1.7 (sec) for fixed nodes, followed by a reduction to 1.6 (sec) in the 340 (sec) period. Over the 60 (sec) to 110 (sec) simulation period, the end-to-end delay was 1.8 (sec) for the mobile node array. For the simulation period, it was 1.85 (sec) for the mobile hub network. And during the 340 (sec) simulation, the end-to-end delay was 1.7 (sec). Figure 3 shows that an end-to-end delay is lower for the network using fixed nodes compared to the network of mobile nodes. The average delay in the fixed Figure 3. End-to-end delay (sec) for fixed and mobile node network.

Mac Delay
The duration of the MAC queue for a packet is set as the duration taken from the packet entering the MAC layer queue. MAC delay is dependent on various protocol settings within MAC layer. This is the overall end-to-end delay that ZigBee WPAN nodes receive in the network. Packets are deposited when there is a limited duration of media access. In addition, it has high, according to the priority of the nodes and their location.

Throughput
Throughput is the rate at which the packet is passed from one node to another network node. The bitrate depends on network path delay, nervousness and TCP window size.  the simulation time 25 (sec) to 140 (sec) the average throughput of the fixed node network is 1500,000 bits/sec which is higher than the mobile node network which is 1,300,000 bits/sec. And for the simulation time 280 (sec) to 340 (sec) the average throughput is 1,400,000 bits/sec for fixed node network and average throughput is 1,500,000 bits/sec for the mobile node network. At the moment of the simulation 340 (sec) the network throughputs of fixed nodes is 1,700,000 bits/sec and 1,450,000 bits/sec for the network of mobile nodes.
The average network speed for the fixed node network is close to 1,700,000 bits/s. Moreover, for the network of mobile nodes, it is only about 1,500,000 bits/s. In the mobile node network, a high ratio of uncommitted messages ultimately leads to reduced throughput and degraded network performance. Lower throughput causes packets to be deposited over the network of mobile nodes and a lower quality of network connections. High packet loss within the mobile network results in packet transfer and low physical hardware processing power.
High throughput offers lower packet loss and better network connection quality within the fixed node network.
A number of QoS performance parameters are analyzed from fixed nodes against the mobile node network. In almost all the statistics presented here, the performance of fixed-node networks dominates compared with mobile-node networks.

Conclusions
The paper analyses the performance of ZigBee fixed nodes and ZigBee mobile node network based on MAC delay, MAC load, throughput and end-to-end delay. Simulation results show the performance comparison between the two scenarios of the proposed network. The study also shows that the network performance parameters of fixed nodes, including MAC delay are 33.33%, end-to-end delay is 10.52%, and throughput is 11.76% better than the mobile node configu-