15164

13636

كارشناسي ارشد

شبكه هاي مخابراتي

اصفهان : دانشگاه صنعتي اصفهان

1398

دوازده، 82ص. :مصور، جدول، نمودار

حسين سعيدي، مجيد نبي

محمد مهدي نقش، نغمه سادات مويديان

1398/07/20

كتابنامه

برق

مهندسي برق و كامپيوتر

1398/07/20

2557567

Exploiting the Time Slotted Channel Hopping Protocol in Wireless Body Area Networks and Analysis the Interference Impact of Inter Networks Farzad Veisi Goshtasb f veysi@ec iut ac ir Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Prof Hossein Saidi hsaidi@cc iut ac ir Dr Majid Nabi nabi@cc iut ac ir Abstract Wireless Body Area Networks WBANs as one of the most important applications of the Internet make their waytowards smart health care domain These networks consist of a few number of wireless nodes placed on inside the humanbody which are supposed to measure vital body information such as blood pressure body temperature and blood oxygenlevels and send it to a medical facility These networks have serious constraints with respect to energy consumption transmission range and node size The protocol used in the Medium Access Control MAC layer of these networks will havea considerable impact on their performance The IEEE 802 15 4 standard has always been one of the prominent technologiesfor these networks due to its functional features But this standard suffers from the other wireless technologies such as Wi Fiand Bluetooth operating in the same frequency Time Slotted Channel Hopping TSCH is one of the operational modesof this standard that is developed for industrial and noisy environments This standard utilizes both frequency hoppingand Time Division Multiple Access TDMA characteristics and effectively overcomes the effects of cross technologyinterference and multi path fading This standard can be a good option for use in WBANs The contribution of this thesisis two folded The first contribution is an experimental study of the performance of TSCH in WBANs In this part severalwireless nodes are installed on a human body and several experiments are performed Experiments are conducted in a varietyof environments without interference with controlled interference and the office environment with different transmittingpowers and different body posture These experiments are repeated once again for the IEEE 802 15 4 standard The purposeof these tests is to demonstrate the performance of the TSCH standard compared to the base IEEE 802 15 4 with respect tothe effects of multi path fading and interference The second contribution of this research is investigating the impact of interference between TSCH networks First thechance of collision between two TSCH networks in the same frequency is analyzed This part shows that such two TSCHnetworks do not necessarily interfere with each other Then the Probability Mass Function PMF of collided channels isobtained for the different number of TSCH networks The results of these analyses contain very important information forthe TSCH network designers which indicate the probability of the worst and best cases for collided channels for a certain

حسين سعيدي، مجيد نبي

محمد مهدي نقش، نغمه سادات مويديان