...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Wireless Communications >The problem of medium access control in wireless sensor networks
【24h】

The problem of medium access control in wireless sensor networks

机译：无线传感器网络中的媒体访问控制问题

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article we revisit the problem of scheduled access through a detailed foray into the questions of energy consumption and throughput for MAC protocols in wireless sensor networks. We consider a static network model that rules out simultaneous transmission and reception by any sensor node and consequently requires partitioning of nodes into disjoint sets of transmitters and receivers at any time instant. Under the assumption of circular transmission (reception) ranges with sharp boundaries, a greedy receiver activation heuristic is developed relying on the network connectivity map to determine distinct receiver groups to be activated within disjoint time intervals. To conserve limited energy resources in sensor networks, the time allocation to each receiver group is based on the residual battery energy available at the respective transmitters. Upon activating each receiver group separately, the additional time-division mechanism of group TDMA is imposed to schedule transmissions interfering at the non-intended destinations within separate fractions of time in order to preserve the reliable feedback information. The two-layered time-division structure of receiver activation and group TDMA algorithms offers distributed and polynomial-time solutions (as required by autonomous sensor networks) to the problems of link scheduling as well as energy and throughput-efficient resource allocation in wireless access. The associated synchronization and overhead issues are not considered in this article.
机译：在本文中，我们将通过详细探讨无线传感器网络中MAC协议的能耗和吞吐量问题来重新讨论计划访问的问题。我们考虑一个静态网络模型，该模型排除了任何传感器节点同时进行的发送和接收，因此需要在任何时刻将节点划分为不相交的发射机和接收机集。在具有尖锐边界的圆形传输（接收）范围的假设下，贪婪的接收器激活试探法依赖于网络连接图来确定要在不相交的时间间隔内激活的不同接收器组。为了节省传感器网络中有限的能源，分配给每个接收器组的时间是基于各个发射器上可用的剩余电池能量。在分别激活每个接收器组后，将使用组TDMA的附加时分机制来调度在不同时间段内在非预期目标处发生干扰的传输，以保留可靠的反馈信息。接收机激活和组TDMA算法的两层时分结构为无线接入中的链路调度以及能量和吞吐效率高的资源分配问题提供了分布式和多项式时间解决方案（根据自治传感器网络的要求）。本文不考虑相关的同步和开销问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号