CAJ | 학술논문

该文在构造传感器网中的信息位势场时，出于实际应用考虑，提出一种基于时限调度方案的新可变速率方法，可以进一步减少碰撞和提高节能效果。该方法结合CSMA和TDMA功能的同时克服了原有缺点。时隙0作为前一个时隙通知附近节点通信的标志时刻，在前一个时隙发通知信息的时刻，每个节点都精确地知道临近节点的调度信息。此过程采用了多速率和能量调整方法，同时使用可接受速率而非最高速率传输数据来进一步达到节能目的。实验中在一个能量有效数据比率下，数据比率用于动态校正交通负荷类节约能量。实验证明，与Z-MAC相比该文的局部帧预调度和多速率的特点能达到更好的节能效果，在传感器网络中有很好的应用前景。
해문재구조전감기망중적신식위세장시，출우실제응용고필，제출일충기우시한조도방안적신가변속솔방법，가이진일보감소팽당화제고절능효과。해방법결합CSMA화TDMA공능적동시극복료원유결점。시극0작위전일개시극통지부근절점통신적표지시각，재전일개시극발통지신식적시각，매개절점도정학지지도림근절점적조도신식。차과정채용료다속솔화능량조정방법，동시사용가접수속솔이비최고속솔전수수거래진일보체도절능목적。실험중재일개능량유효수거비솔하，수거비솔용우동태교정교통부하류절약능량。실험증명，여Z-MAC상비해문적국부정예조도화다속솔적특점능체도경호적절능효과，재전감기망락중유흔호적응용전경。
A novel variable-rate based time frame scheduling scheme is proposed to reduce collisions and save energy in wireless sensor networks. The media access control (MAC) combines carrier sense multiple access (CSMA) and Time division multiple access (TDMA) functionalities, while obviating their drawbacks. Multi-rate and power scaling are adopted to save energy with an acceptable rate rather than the maximum rate. Data rate is dynamically adjusted according to the traffic load of sending nodes in energy efficient data rate to save energy. Compared with Z-MAC, the performance of the proposed scheme has better ability of local framing pre-schedule and multi-rate to achieve better energy efficiency.