公开(公告)号：US20120157148A1

公开(公告)日：2012-06-21

申请号：US13380387

申请日：2010-06-04

申请人： Matthew P. J. Baker

发明人： Matthew P. J. Baker

IPC分类号： H04B7/06

CPC分类号： H04B7/0691 ,  H04B7/0602

摘要： A method is provided of transmitting a plurality of signals from a primary station to a respective plurality of secondary stations, said primary station comprising at least two transmit antennas, wherein each of said plurality of signals is transmitted from a respective subset of said at least two transmit antennas to a respective secondary station, in which each subset is selected at least according to a predetermined characteristic of the respective secondary station.

摘要翻译： 提供了一种从主站向相应的多个次站发送多个信号的方法，所述主站包括至少两个发射天线，其中所述多个信号中的每一个从所述至少两个的相应子集发送 将天线发射到相应的次站，其中至少根据相应次站的预定特性来选择每个子集。

公开(公告)号：US06714611B1

公开(公告)日：2004-03-30

申请号：US09527278

申请日：2000-03-17

申请人： Yonggang Du ,  Matthew P. J. Baker ,  Edward S. Eilley

发明人： Yonggang Du ,  Matthew P. J. Baker ,  Edward S. Eilley

IPC分类号： H04L702

CPC分类号： H04W56/0035 ,  H04W92/10

摘要： The invention relates to a wireless network which includes a plurality of network nodes, each of which includes a radio device with a respective radio clock supply and is arranged to exchange data via a wireless medium, and also includes a user interface for the exchange of data between the associated radio device and at least one user. At least one user of a network node receives a user clock, being independent of the radio clock, from a user clock supply of the relevant network node. Each network node is arranged to determine, in response to events specified by a central network node, a time value related to the relevant application clock. The central network node transmits at least the last time value formed by a selected network node. Each network node forms the difference between the last two time values determined and synchronizes the frequency of its user clock supply in dependence on the comparison of the difference between its last two time values determined with the difference between the last two time values of the selected network node.

摘要翻译： 本发明涉及一种无线网络，其包括多个网络节点，每个网络节点包括具有相应无线电时钟供应的无线电设备，并且被布置为经由无线介质交换数据，并且还包括用于交换数据的用户接口 在相关联的无线电设备和至少一个用户之间。 网络节点的至少一个用户从相关网络节点的用户时钟供应接收独立于无线电时钟的用户时钟。 每个网络节点被布置成响应于由中央网络节点指定的事件来确定与相关应用时钟相关的时间值。 中央网络节点至少发送由所选网络节点形成的最后时间值。 每个网络节点形成所确定的最后两个时间值之间的差异，并且根据其所选择的网络的最后两个时间值之间的差确定的其最后两个时间值之间的差异的比较来同步其用户时钟供应的频率 节点。

公开(公告)号：US06661811B1

公开(公告)日：2003-12-09

申请号：US09488031

申请日：2000-01-20

申请人： Matthew P. J. Baker

发明人： Matthew P. J. Baker

IPC分类号： H04J306

CPC分类号： H04L12/40058 ,  H04J3/0632 ,  H04J3/0664 ,  H04L12/40071 ,  H04L2012/5616 ,  H04L2012/5649 ,  H04L2012/5664 ,  H04N21/4305 ,  H04N21/43632 ,  H04Q11/0478

摘要： In order to enable isochronous data to be transmitted over communications systems which may introduce timing jitter each packet of isochronous data is provided with a timestamp which indicates to a receiver the time at which a packet should be processed. The receiver notes the time the first packet of a data stream arrive and adds a given offset time which is greater than or equal to the maximum jitter to produce a time t1. Each succeeding packet is processed at a time t=t1+(Tn−T1), where T1 is the timestamp in the first data packet and Tn is the timestamp in the current packet. Thus the processing at the receiver is dependent on the relative times of arrival of the packets rather than the absolute times defined by the timestamps.