专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2019040963A1 TERMINAL IDENTITY PROTECTION METHOD IN A COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2019040963A1
公开(公告)日：2019-03-07
申请号：PCT/AU2018/000150
申请日：2018-08-28
申请人： MYRIOTA PTY LTD
发明人： BECK, Andrew , MCKILLIAM, Robert George
IPC分类号： H04L9/32
摘要： A method for determining a terminal ID from a message received from a terminal in a communication system avoids sending the terminal ID in the clear. In this system each terminal ID has an associated encryption key. A transmitted message comprises at least a Message Authentication Code (MAC), a n -bit hash, and encrypted message text. At least the terminal key and a nonce is used to generate the MAC, and neither the terminal ID or the terminal key are included in the transmitted message. An authentication broker stores the set of all (terminal ID, terminal key) pairs for the plurality of terminals in the communication system. The set of all terminal keys is grouped into at least two partitions, and on receipt of a message the authentication broker identifies the partition that includes the terminal key of the terminal that transmitted the received message using the n -bit hash (the search partition). The authentication broker then searches the search partition for the terminal key that authenticates the MAC to identify the terminal ID. In some embodiments the nonce is not included in the message but is known or obtainable by the terminal and the authentication broker. A partitioning function generates the «-bit hash from at least the nonce and a terminal key. In some embodiments the nonce is included in the received message and a partitioning function generates the n -bit hash by using the nonce to select n bits from the terminal ID. In some embodiments the partitions are arranged into hierarchical groups such as tree, and each node has a partition key, and the n-bit has is formed as the ordered set of MACs for the partition keys on the path from the root node to the leaf node partition that includes the terminal key.

2. 发明申请

WO2017197433A1 POSITION ESTIMATION IN A LOW EARTH ORBIT SATELLITE COMMUNICATIONS SYSTEM 审中-公开
标题翻译：低轨道卫星通信系统中的位置估计
公开(公告)号：WO2017197433A1
公开(公告)日：2017-11-23
申请号：PCT/AU2017/000108
申请日：2017-05-16
申请人： MYRIOTA PTY LTD
发明人： HALEY, David Victor Lawrie , GRANT, Alexander James , MCKILLIAM, Robert George , POLLOK, Andre
IPC分类号： G01S19/28 , G01S19/48 , H04W4/02
摘要： A method for estimating the position of a terminal in a satellite communication at either the ground station or in the satellite is described. The method uses estimates of the time delay, Doppler and/or Doppler Rate of signals transmitted from the terminal to the satellite together with an estimate of the satellite position. The method can be used with both synchronised terminals and unsynchronised terminals provided they have a stable time or frequency reference as well as with low earth orbit satellites both with and without on-board global position and timing references. Additionally the method can also use estimates of the time delay, Doppler or Doppler rate of beacon signals received by either the satellite or terminals. These beacon signals may include GPS L1 signals. In contrast to standard GPS receivers, the method does not require the terminal to store GPS ephemeris data or to operate continuously.
摘要翻译：描述了用于在地面站或卫星处估计卫星通信中的终端的位置的方法。该方法使用从终端发送到卫星的信号的时间延迟，多普勒和/或多普勒速率的估计以及卫星位置的估计。该方法可以与同步终端和非同步终端一起使用，前提是它们具有稳定的时间或频率参考以及低地球轨道卫星，无论是否具有板载全局位置和定时基准。另外，该方法还可以使用由卫星或终端接收的信标信号的时间延迟，多普勒或多普勒速率的估计。这些信标信号可以包括GPS L1信号。与标准GPS接收机相比，该方法不需要终端存储GPS星历数据或连续操作。

3. 发明申请

WO2019040964A1 SYSTEM AND METHOD FOR PREDICTION OF COMMUNICATIONS LINK QUALITY 审中-公开
公开(公告)号：WO2019040964A1
公开(公告)日：2019-03-07
申请号：PCT/AU2018/000151
申请日：2018-08-28
申请人： MYRIOTA PTY LTD
发明人： HAYLEY, David Victor Lawrie , GRANT, Alexander James , MCKILLIAM, Robert George , POLLOK, Andre
IPC分类号： H04B17/373 , H04B17/24 , H04B17/318 , H04W52/24 , H04W16/18
摘要： Terminal apparatus are configured to monitor one or more transmission links from one or more transmitters and use the information to determine a link quality estimate. The link quality estimate is then for determining one or more transmission parameters for a transmission from a transmitter to a receiver or for determining an installation location and orientation of a terminal for transmission to a receiver or reception from a transmitter. Link quality estimates may be obtained by monitoring multiple satellites including global navigation system satellites, and may comprise estimating a spatial map. The link quality estimates may also be used to schedule transmissions to maximise probability of reception.

4. 发明申请

WO2018112502A1 SYSTEM AND METHOD FOR GENERATING EXTENDED SATELLITE EPHEMERIS DATA 审中-公开
公开(公告)号：WO2018112502A1
公开(公告)日：2018-06-28
申请号：PCT/AU2017/000286
申请日：2017-12-21
申请人： MYRIOTA PTY LTD
发明人： GRANT, Alexander James , MCKILLIAM, Robert George
IPC分类号： G01S19/27
摘要： A method and system for generating extended satellite ephemeris data for a satellite for use by a terminal apparatus is described. Historical orbital parameter data (e.g. from historical TLEs) are used to build a predictor for future values of the orbital parameters. The orbital parameter prediction model is then stored on the terminal apparatus (or an existing model can be updated), and at a desired epoch the pre-stored orbital parameter predictor is used to produce estimates of the orbital parameters for the satellite for that epoch (ie synthetic or predicted TLEs). These predicted orbital parameters (predicted TLE) are then used as input to a standard orbit predictor to produce an estimate of the satellite's location, for example to determine satellite pass times. This method allows generation satellite ephemeris data which is valid out to a year or more as compared to the normal validity of ephemeris data of a few hours or days.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式