Probability Analysis of Channel Collision between IEEE 802.15.4 and IEEE 802.11b Using Qualnet Simulation for Various Topologies

Jeong

2011

Int J Communication

In this paper, we demonstrate an empirical analysis of the reliability of low-rate wireless u-healthcare monitoring applications. We have considered the performance analysis of the IEEE 802.15.4 low-rate wireless technologies for u-healthcare applications. For empirical measurement, we considered three scenarios in which the reliability features of the low-rate wireless u-healthcare monitoring applications have been measured: (i) distance between sensor nodes and base station; (ii) deployment of the number of sensor nodes in a network; and (iii) data transmission by different time intervals. The experimental results show that received data are used to calculate BER and analyze the performance according to the scenarios. The BER is affected when varying the distance between sensor node and base station, the number of nodes, and time interval. 513Low-rate wireless u-healthcare monitoring system works well in single-hop (ad hoc network) data communications but revealed some scheduling problems in a multi-hop network. One of the more difficult constraints was that several wireless biological data sensors, including ECG, and accelerometer reached the limits of using a multi-hop environment. Our experimental results demonstrated that the star topology and the one-hop connection to the base station are able to improve the performance of the reliability of the low-rate wireless u-healthcare monitoring applications. In applying low-rate wireless technology for wireless u-healthcare monitoring application, sampling rate, number of nodes and data packet sizes as well as reliable medical devices are closely related to the reliability that will improve the system performance.Young-Dong Lee received his BS, MS, and PhD degrees from and 1998, respectively. He is currently an associate professor in the School of Computer and Information Engineering at Dongseo University. From 1987 to 1998, he was a research associate at the Agency for Defense Development. His current research interests include developing secure communication system, side-channel attack, and ubiquitous sensor network/radio frequency identification security.

Section: Reliability Metricsmentioning

confidence: 99%

Section: Low-rate Wireless U-healthcare Monitoring Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Empirical analysis of the reliability of low‐rate wireless u‐healthcare monitoring applications

Jeong

2011

Int J Communication

“…In [8] channel conflict probabilities between IEEE 802.11b and IEEE 802.15.4 have been modeled. In [9] channel collision between IEEE 802.15.4 and IEEE 802.11b for circular and grid topology is analyzed with the mobility model. The effect of inter packet delay is analyzed in [10].…”

Section: Introductionmentioning

confidence: 99%

Inter and Intra Cluster Scheduling for Performance Analysis of Coexistence Heterogeneous Networks

Tamilselvan¹,

Shanmugam²

2010

IJCA

Self Cite

In ubiquitous networking environments, we generally need two or more heterogeneous communication systems coexisting in a single place. Especially, wireless local area networks (WLANs) based on IEEE 802.11b specifications and wireless personal area networks (WPANs) based on IEEE 802.15.4 specifications need to coexist in the same Industrial, Science and Medial (ISM) band. If the WPAN communication coverage is expanded using a cluster-tree network topology, then the 802.15.4 network is more susceptible to interference from neighboring WLANs. In this paper, we propose an adaptive transmission power aware cluster scheduling algorithm using multiple channels in a WPAN in the presence of WLAN interference. The algorithm includes node identification, channel allocation, clustering and time scheduling. To evaluate the performance of the proposed algorithm, the performance metrics such as Bit error, Throughput, Average End-End Delay and Average Jitter is measured through Qualnet simulation. The measurement result shows that the proposed algorithm is effective in an IEEE 802.15.4 cluster-tree network in the presence of multiple IEEE 802.11 interferers.

“…The BER is obtained from signal to noise and interference ratio using OQPSK a platform MATLAB/ short range WSN is usually Page: 2511 used in indoor environments, in which it is subjected to the effects of wireless propagation, such as added noise and multipath fading. These effects may cause inter-symbol interference (ISI), increase the bit error rate (BER ) at the receiver, and decrease the reliability of the entire system [9].…”

mentioning

confidence: 99%

Implementation of MSK Modulation Scheme for Zigbee System IEEE 802.15.4 Physical Layer

Pooja¹,

Khaparkar²,

Sahu³

2018

IJTSRD

In this work physical layer simulation of IEEE 802.15.4 / ZigBee protocol has been done. The proposed work is the implementation of ZigBee system according to the protocol description. In this work we have simulated ZigBee system first with conventional OQPSK modulation technique, then the simulations are performed for MSK modulation, which is through OQPSK modulation. Simulation results for BER showing the average 79.43 % improvement in BER for Proposed MSK compared with OQPSK modulation scheme. For a targ 10-2 the SNR required is 4 dB for this work i.e. for MSK, as compared to 10 dB for conventional OQPSK. Hence, an improvement of 6 dB less SNR. For a target BER of 10-2 the SNR required is 4 dB for this work i.e. for MSK, as compared to 5.2 dB wit [1]. Hence, an improvement of 1.2 dB less SNR.