Proactive Neighbour Aware Fast Association Scheme over IEEE 802.15.4

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네팔리 삼라차나
Issued Date
IEEE 802.15.4 is the de facto standard for wireless sensor network (WSNs) which define the physical and the MAC layers. IEEE 802.15.4 has been extensively employed in various sensor network applications and its application
domain is expanding day by day. Furthermore, efficiency and improvement in mobility handling are expected to facilitate numerous more applications. The awareness and concern of healthy life and explosion of various smart wearable for continuous health monitoring have demanded a need for wireless technology with robust mobility handling and IEEE 802.15.4 is no doubt a suitable candidate. However, the poor efficacy of mobility handling in IEEE 802.15.4 is one salient reason preventing it from being a dominant choice. We observed that the amount of time required for the association process is the key reason why IEEE 802.15.4 is unable to handle the mobility. Nevertheless, there are various improvements possible in order to enhance the association process, which is the
main topic of this thesis.

In this thesis, a new fast association technique is proposed that prevents
nodes from scanning multiple channels. In the proposed scheme we propose to maintain a list with details of all the neighbors in the vicinity such that the
mobile node has a clear picture of the surrounding. Whenever the node needs to perform a handover, it scans only those channel in the list, which drastically
decrease the number of channels the node has to scan.
Our scheme is simple but yet effective for the fast association of devices. Based on the theoretical
and the simulation based analysis, we verify the benefits of the proposed mechanism in terms of most relevant performance metrics.

We have developed both the mathematical model and the simulation model for the analysis. The detailed performance analysis is provided to demonstrate the
performance gain achieved by the proposed scheme.

The schemes that we have presented in this dissertation is simple and can be easily implemented in IEEE 802.15.4. We expect that our proposed method will be beneficial in various sensor network applications.
Alternative Title
IEEE 802.15.4 에서의 능동적 이웃 인지 고속 결합 기법
Alternative Author(s)
Samrachana Nepali
Department of Computer Engineering
일반대학원 컴퓨터공학과
Seokjoo Shin
Awarded Date
Table Of Contents
Acronyms v
Abstract [Korean] iii
Abstract i
List of Figures viii
List of Tables ix
1.1 Wireless Technology Studied 2
1.2 Research Objectives 2
1.3 Research Contribution 3
1.4 Research Organization 4
2 IEEE 802.15.4 5
2.1 Background 5
2.2 Overview of the Standard 5
2.3 Physical Layer 5
2.4 Medium Access Control Layer 8
2.5 Superframe 8
2.6 Association 10
2.7 Guaranteed Time Slot (GTS) 13
2.8 Concluding Remarks 13
3.1 Motivation of this Work 14
3.2 Related Works 16
3.3 Network Model 17
3.4 Proposed Method 19
3.4.1 Initialization of a PAN Coordinator 21
3.4.2 Coordinator Selection 21
3.5 Numerical Analysis 23
3.5.1 Association 23
3.5.2 Reassociation 23
3.6 Numerical Example 24
3.7 Performance Evaluation 25
3.7.1 Association Time 26
3.7.2 Association Success Rate and Packet Delivery Ratio 27
3.7.3 Association rate for the random motion 29
3.8 Concluding Remarks 29
Bibliography 32
Graduate School of Chosun University
네팔리 삼라차나. (2016). Proactive Neighbour Aware Fast Association Scheme over IEEE 802.15.4.
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General Graduate School > 3. Theses(Master)
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