中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

3 records (took 0.017 seconds)

    TDMA ACCESS METHOD AND DEVICE BASED ON MULTIPLE ACCESS POINTS
    1.
    发明申请
    TDMA ACCESS METHOD AND DEVICE BASED ON MULTIPLE ACCESS POINTS 有权
    基于多个接入点的TDMA接入方法和设备

    公开(公告)号：US20150244486A1

    公开(公告)日：2015-08-27

    申请号：US14427210

    申请日：2013-01-10

    Applicant: SHENYANG INSTITUTE OF AUTOMATION OF THE CHINESE ACADEMY OF SCIENCES

    Inventor： Wei Liang ,  Shuai Liu ,  Xiaoling Zhang ,  Yutuo Yang ,  Haibin Yu

    IPC: H04J3/16 ,  H04W40/24 ,  H04L5/00 ,  H04W72/04

    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。

    Chain-type wireless sensor network-oriented hybrid media access control method
    2.
    发明授权
    Chain-type wireless sensor network-oriented hybrid media access control method 有权

    公开(公告)号：US09979563B2

    公开(公告)日：2018-05-22

    申请号：US14898511

    申请日：2014-10-22

    Applicant: SHENYANG INSTITUTE OF AUTOMATION OF THE CHINESE ACADEMY OF SCIENCES

    Inventor： Haibin Yu ,  Wei Liang ,  Xiaoling Zhang ,  Chaofan Ma

    IPC: H04L12/64 ,  H04W4/00 ,  H04W52/02

    CPC classification number: H04L12/6418 ,  H04L2012/6459 ,  H04W4/70 ,  H04W52/0212 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/146

    Abstract: The present invention relates to wireless network technologies, and particularly to a chain-type wireless sensor network-oriented hybrid media access control (MAC) method. The present invention fully considers features of a chained or linear topology of a wireless sensor network applied in power transmission line monitoring and the like, adopts different access policies at different periods of the network, and proposes a method of time division access control Pipelined TDMA during busy periods and contention access control S-XMAC during idle periods. During busy periods, a pipelined scheduling transmission method is used to avoid the problem of hidden terminals so as to improve transmission reliability and resource utilization. During idle periods, different MAC parameters are set for cluster head members and ordinary cluster members, so that the cluster head members can respond to requests in a more timely manner, and meanwhile, the ordinary cluster members save energy as much as possible, thereby meeting requirements for network real-time quality of the application system while saving energy of the network.

Patent Agency Ranking