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公开(公告)号：US09780898B2
公开(公告)日：2017-10-03
申请号：US14427210
申请日：2013-01-10
Inventor： Wei Liang , Shuai Liu , Xiaoling Zhang , Yutuo Yang , Haibin Yu
CPC classification number: H04J3/1694 , H04B7/2656 , H04L5/0055 , H04W16/18 , H04W40/244 , H04W48/08 , H04W72/0446
Abstract: The present invention relates to a TDMA access method and device based on multiple access points. According to the problems that the existing method cannot simultaneously satisfy the demands of timeliness and reliability in actual industrial application and has low resource utilization rate, the present invention takes full consideration of the transmission characteristics and industrial automation application characteristics of wireless networks, and provides a TDMA access method and device based on multiple access points. The main ideas of the method in the present invention are: the multi-access point redundant communication manner is adopted to improve system reliability, beacon frames of multiple access points are utilized to perform time synchronization so as to improve synchronization precision, confirmation messages are fed back with regard to reliable access points to reduce the number of retransmissions, and a modularized multi-access point device design method is adopted to lower the difficulties of device maintenance and management.
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公开(公告)号：US20150244486A1
公开(公告)日：2015-08-27
申请号：US14427210
申请日：2013-01-10
Inventor： Wei Liang , Shuai Liu , Xiaoling Zhang , Yutuo Yang , Haibin Yu
CPC classification number: H04J3/1694 , H04B7/2656 , H04L5/0055 , H04W16/18 , H04W40/244 , H04W48/08 , H04W72/0446
Abstract: The present invention relates to a TDMA access method and device based on multiple access points. According to the problems that the existing method cannot simultaneously satisfy the demands of timeliness and reliability in actual industrial application and has low resource utilization rate, the present invention takes full consideration of the transmission characteristics and industrial automation application characteristics of wireless networks, and provides a TDMA access method and device based on multiple access points. The main ideas of the method in the present invention are: the multi-access point redundant communication manner is adopted to improve system reliability, beacon frames of multiple access points are utilized to perform time synchronization so as to improve synchronization precision, confirmation messages are fed back with regard to reliable access points to reduce the number of retransmissions, and a modularized multi-access point device design method is adopted to lower the difficulties of device maintenance and management.
Abstract translation: 本发明涉及一种基于多个接入点的TDMA接入方法和装置。 根据现有方法不能同时满足实际工业应用的及时性和可靠性要求，资源利用率低的问题，本发明充分考虑了无线网络的传输特性和工业自动化应用特点，并提供了一种 TDMA接入方法和基于多个接入点的设备。 本发明方法的主要思想是采用多接入点冗余通信方式提高系统可靠性，利用多个接入点的信标帧进行时间同步，提高同步精度，提供确认消息 关于可靠接入点，减少重传次数，采用模块化多接入点设备设计方法，降低设备维护管理的难度。
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