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A Tree-Hybrid MAC Protocol Design to support simultaneous voice and data in a tree-based sensor network

Title
A Tree-Hybrid MAC Protocol Design to support simultaneous voice and data in a tree-based sensor network
Other Titles
Tree 형태의 센서네트워크에서 음성과 데이터 형태를 지원하는 Tree-Hybrid MAC 프로토콜 설계
Author
이재형
Advisor(s)
조성호
Issue Date
2017-08
Publisher
한양대학교
Degree
Doctor
Abstract
In this paper, we propose a tree-based time and frequency division multiple access (Tree-Hybrid) media access control (MAC) algorithm based on the IEEE 802.15.4 PHY standard. The method involves the simultaneous use of two algorithms, a time slot allocation algorithm (TSAA) and a frequency slot allocation algorithm (FSAA), at low power consumption to support voice and data communication to solve the problems afflicting prevalent MAC protocols in tree topology networks. The TSAA first generates routing paths through the control channel in a super frame (SF) prior to transmitting packets, and allocates time slots for each node to transmit packets. The FSAA then allocates frequencies to each path according to the routing paths generated following its application. The overhearing problem and the funneling effect in TDMA as well as carrier sense multiple access with collision avoidance (CSMA/CA) MACs are resolved by these two algorithms because a given node and its neighbors are orthogonal in terms of time and frequency. The problem of inter-node synchronization is addressed by periodically sending a beacon from higher to lower nodes, and the issue of low power is solved by leaving unsigned time slots in an idle state. To test the effectiveness of the proposed algorithm, we used a MATLAB simulation to compare its performance with that of contention-based CSMA MAC and non-contention-based TreeMAC in terms of network throughput, network delay, energy efficiency, and energy consumption. We also tested the performance of the algorithms for an increased number of nodes and transmission packets in the tree topology network.
URI
http://hdl.handle.net/20.500.11754/33636http://hanyang.dcollection.net/common/orgView/200000430882
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > ELECTRONIC COMMUNICATION ENGINEERING(전자통신공학과) > Theses (Master)
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