Interference Mitigation Scheme in Heterogeneous Network Environment
- 발행기관 아주대학교
- 지도교수 Young June Choi
- 발행년도 2013
- 학위수여년월 2013. 2
- 학위명 석사
- 학과 및 전공 일반대학원 컴퓨터공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000013880
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
the WIFI and WSN share the same spectrum band causing severe degradation to WSN network performance. The WSN applications in BAN and security cannot afford such degradation, in this paper we have develop an interference coordination scheme which uses no data packets in downlink to remove interference thus creating interference free tunnel for WSN nodes in infrastructure mode. In our scheme we have created a dedicated slot for WSN by blocking Wi-Fi Network using NAV vector in uplink access by the Wi-Fi terminals. This paper also includes the 2D-model of the queue derived from generic MM1K with the buffer limitation and have calculated the Wi-Fi blocking probability in various scenarios, which later on verified by simulation. Later we will verify our work by simulation results in C++ and comparing the result with the traditional white space scheme.
more목차
ACKNOWLEDGEMENTS 2
ABSTRACT 3
TABLE OF CONTENTS 4
LIST OF FIGURES 5
LIST OF TABLES 6
LIST OF ACRONYMS 6
1. Introduction 7
2. Related Works 10
2.1 Exploiting the Guard band between the WiFi CH 11
2.2 Zigbee used Time sharing on the two non-overlapping CH for its node transmission 12
2.3 Frequency Hopping solution for the Zigbee to cater the Coexistence Issue 12
2.4 Limitation of Previous Works 13
2.5 Background 14
2.5.1WIFI & Zigbee Network 14
2.5.2LTE ABS Frame 15
3. Proposed Idea 16
3.1 Problem Statement 16
3.2 Proposed System Architecture 17
3.3 Proposed Algorithm 18
3.3.1Signaling Messages 19
4. Queuing Analysis 21
5. Simulation 24
5.1 Average Waiting Time 25
5.2 Blocking Probability of WiFi 26
5.3 Data Rate 27
5.4 Waiting time Vs Buffer Limit 30
5.5 Comparison 31
6. Conclusion 32
7. References 33
