发明申请
US20080112371A1 HYBRID TIME DIVISION MULTIPLE ACCESS (TDMA)-CARRIER SENSE MULTIPLE ACCESS (CSMA) MEDIUM ACCESS CONTROL (MAC) FOR MULTI-HOP AD HOC NETWORKS
有权
混合时分多址（TDMA） - 多通道多通道接入（CSMA）多媒体接入控制（MAC）
- 专利标题： HYBRID TIME DIVISION MULTIPLE ACCESS (TDMA)-CARRIER SENSE MULTIPLE ACCESS (CSMA) MEDIUM ACCESS CONTROL (MAC) FOR MULTI-HOP AD HOC NETWORKS
- 专利标题（中）： 混合时分多址（TDMA） - 多通道多通道接入（CSMA）多媒体接入控制（MAC）
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申请号： US11560113申请日： 2006-11-15
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公开(公告)号： US20080112371A1公开(公告)日： 2008-05-15
- 发明人: Avinash Joshi , Manish Shukla
- 申请人： Avinash Joshi , Manish Shukla
- 申请人地址： US FL Plantation
- 专利权人： MOTOROLA, INC.
- 当前专利权人： MOTOROLA, INC.
- 当前专利权人地址： US FL Plantation
- 主分类号： H04J3/00
- IPC分类号： H04J3/00 ; H04L12/413
摘要：
A hybrid TDMA-CSMA MAC protocol is provided for allocating time slots within a frame having a structure in which transmission time is divided into a first number of actual TDMA time slots and a second number of “virtual” CSMA time slots. Each of the nodes in a multi-hop network can transmit a Highest Slot Number (HSN) field. Each time one of the Hello messages is received from a neighbor node, a given node can calculate variables based on the HSN field. The given node can use these variables to calculate a ratio of the first number to the second number. This ratio can be dynamically adjusted depending upon the traffic conditions observed by nodes within the multi-hop ad hoc network at any particular time to thereby change the relative percentages of the frame which are allocated for a TDMA portion and a CSMA portion of the frame.
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