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公开(公告)号：US20180098296A1
公开(公告)日：2018-04-05
申请号：US15564913
申请日：2015-04-30
发明人： Hai Wang , Qianxi Lu , Rui Fan , Jinhua Liu
IPC分类号： H04W56/00
CPC分类号： H04W56/0015 , H04W56/00 , H04W56/004 , H04W56/006 , H04W56/007
摘要： The present disclosure relates to a method used in a radio node, and an associated radio node. The radio node is served by a superior radio node and serves one or more subordinate radio nodes. The method includes: receiving a first synchronization signal from the superior radio node; obtaining a first downlink transmission time position for the first synchronization signal; determining a second downlink transmission time position for a second synchronization signal to be transmitted by the radio node, based on the first downlink transmission time position; and transmitting the second synchronization signal via the second downlink transmission time position to the one or more subordinate radio nodes.
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2.发明申请公开(公告)号：US20090245227A1
公开(公告)日：2009-10-01
申请号：US12056206
申请日：2008-03-26
申请人： Tom Chin , Kuo-Chun Lee
发明人： Tom Chin , Kuo-Chun Lee
IPC分类号： H04J3/06
CPC分类号： H04W56/00 , H04B7/2681 , H04L12/413 , H04W56/007
摘要： A method for uplink frame synchronization in a subscriber station may include recording a first time stamp corresponding to a first downlink frame and recording a second time stamp corresponding to a second downlink frame. The first time stamp and the second time stamp may be used to determine a propagation delay change. Uplink transmission timing may be adjusted based on the propagation delay change that is determined.
摘要翻译： 用户站中的上行链路帧同步的方法可以包括：记录与第一下行链路帧对应的第一时间标记，并且记录与第二下行链路帧对应的第二时间戳。 可以使用第一时间戳和第二时间戳来确定传播延迟变化。 可以基于确定的传播延迟变化来调整上行链路传输定时。
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3.发明申请公开(公告)号：US20170367061A1
公开(公告)日：2017-12-21
申请号：US15540651
申请日：2014-12-31
申请人： SOLiD, INC.
发明人： Doyoon KIM , Hyoungho KIM
CPC分类号： H04W56/005 , H04B17/10 , H04B17/104 , H04B17/14 , H04L7/0041 , H04W56/007 , H04W88/085
摘要： Provided is a node unit which is branch-connected to another communication node via a transport medium, the node unit comprising: a delay measurement unit which transmits a test signal for measuring a delay to an adjacent node unit of the branch-connected upper stage via the transport medium and detects a loopback signal to which the test signal is looped back via the adjacent node unit of the upper stage, thereby measuring an upper stage transmission delay between the adjacent node unit of the upper stage and the node unit; a delay summation unit which, when an adjacent node unit of the branch-connected lower stage exists, receives a lower stage transmission delay transmitted from the adjacent node unit of the lower stage, and calculates a summed transmission delay by summing the upper stage transmission delay and the lower stage transmission delay; and a control unit which transmits the summed transmission delay to the adjacent node unit of the upper stage.
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公开(公告)号：US20110007707A1
公开(公告)日：2011-01-13
申请号：US12665979
申请日：2008-01-03
申请人： Muhammad Ali Kazmi
发明人： Muhammad Ali Kazmi
IPC分类号： H04W4/00
CPC分类号： H04W56/007 , H04W36/08 , H04W56/0005 , H04W74/0833
摘要： Time-aligned handover for a mobile device is described herein. The time-aligned handover is achieved by determining a time difference between serving and target cells and determining a target propagation delay based on the time difference. In some cases, the target propagation delay may further be determined based on a serving propagation delay between the serving cell and the mobile device. A target transmission time is calculated based on the target propagation delay. The mobile device uses the target transmission time to time align transmissions to the target cell during handover.
摘要翻译： 本文描述了用于移动设备的时间对齐的切换。 通过确定服务小区和目标小区之间的时间差并基于时间差确定目标传播延迟来实现时间对齐的切换。 在一些情况下，还可以基于服务小区和移动设备之间的服务传播延迟来确定目标传播延迟。 基于目标传播延迟来计算目标传输时间。 在切换期间，移动设备使用目标传输时间来对准目标小区的传输。
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公开(公告)号：US07161921B2
公开(公告)日：2007-01-09
申请号：US10407349
申请日：2003-04-04
IPC分类号： H04J3/06
CPC分类号： H04W56/004 , H04W56/006 , H04W56/007
摘要： Disclosed are methods for adjustment values. In one embodiment, a cumulative adjustment value is provided in memory, an inbound signal is transmitted to a base station during a random access opportunity, and a relative adjustment value is received from the base station. Then, the relative adjustment value is summed with the cumulative adjustment value to create a new cumulative adjustment value which is stored in the memory. Finally, a subsequent inbound signal is transmitted using the new cumulative adjustment value during a reserved access opportunity.
摘要翻译： 披露的是调整值的方法。 在一个实施例中，在存储器中提供累积调整值，在随机访问机会期间将入站信号发送到基站，并且从基站接收相对调整值。 然后，相对调整值与累积调整值相加以创建存储在存储器中的新的累积调整值。 最后，在保留访问机会期间，使用新的累积调整值来发送随后的入站信号。
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公开(公告)号：US20170289938A1
公开(公告)日：2017-10-05
申请号：US15474883
申请日：2017-03-30
发明人： Taesang Yoo , Juan Montojo , Jing Sun , Zhifei Fan
CPC分类号： H04W56/007 , H04L5/001 , H04L5/1469 , H04W56/0005 , H04W72/044 , H04W72/12 , H04W74/002
摘要： Methods, systems, and devices for wireless communication are described. A base station may establish a transmission gap between downlink (DL) and uplink (UL) transmissions on a shared radio frequency (RF) spectrum band using time division duplex (TDD). A length of the gap may be based at least in part on a maximum allowed length of a filler signal corresponding to a coverage area of the base station. To reserve the shared band, a user equipment (UE) may communicate the filler signal for a length of time that is based at least in part on the maximum allowed length and a geographic distance between the UE and the base station. UEs farther from the base station transmit the filler signal of shorter lengths before sending an UL transmission, so that the UL transmissions from different UEs arrive at the same time at the base station regardless of the geographic distance between the UEs.
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公开(公告)号：US08837373B2
公开(公告)日：2014-09-16
申请号：US13642940
申请日：2011-11-01
申请人： Jiansong Gan , Zhiheng Guo , Shaohua Li
发明人： Jiansong Gan , Zhiheng Guo , Shaohua Li
CPC分类号： H04W56/007 , H04B7/155 , H04W56/001 , H04W84/047 , H04W88/085
摘要： Relay node (110), main unit (113) for a relay node and method in a main unit (113) for a relay node (110), which main unit (113) is connectible to a first radio unit (111) and to a second radio unit (112), for synchronising wireless communication over the second radio unit (112) with wireless communication over the first radio unit (111). The method comprises transmitting a synchronisation signal at the second radio unit (112), receiving the signal at the first radio unit (111), to compute a first timing difference corresponding to the signal propagation time and to adjust the downlink transmission timing at the second radio unit (112) according to the first timing difference. Similar signalling, estimation of timing difference and adjustment is made for signals to be received from the user equipment (130) at the second radio unit (112).
摘要翻译： 中继节点（110），用于中继节点的主单元（113）和用于中继节点（110）的主单元（113）中的方法，该主单元（113）可连接到第一无线电单元（111），并且 第二无线电单元（112），用于使所述第二无线电单元（112）上的无线通信与所述第一无线电单元（111）之间的无线通信同步。 该方法包括在第二无线电单元（112）发送同步信号，在第一无线电单元（111）处接收信号，以计算对应于信号传播时间的第一定时差，并在第二无线单元（111）处调整下行链路传输定时 无线电单元（112）。 对于在第二无线电单元（112）处从用户设备（130）接收的信号，进行类似的信令，定时差的估计和调整。
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公开(公告)号：US08774126B2
公开(公告)日：2014-07-08
申请号：US12665979
申请日：2008-01-03
申请人： Muhammad Ali Kazmi
发明人： Muhammad Ali Kazmi
IPC分类号： H04W4/00
CPC分类号： H04W56/007 , H04W36/08 , H04W56/0005 , H04W74/0833
摘要： Time-aligned handover for a mobile device is described herein. The time-aligned handover is achieved by determining a time difference between serving and target cells and determining a target propagation delay based on the time difference. In some cases, the target propagation delay may further be determined based on a serving propagation delay between the serving cell and the mobile device. A target transmission time is calculated based on the target propagation delay. The mobile device uses the target transmission time to time align transmissions to the target cell during handover.
摘要翻译： 本文描述了用于移动设备的时间对齐的切换。 通过确定服务小区和目标小区之间的时间差并基于时间差确定目标传播延迟来实现时间对齐的切换。 在一些情况下，还可以基于服务小区和移动设备之间的服务传播延迟来确定目标传播延迟。 基于目标传播延迟来计算目标传输时间。 在切换期间，移动设备使用目标传输时间来对准目标小区的传输。
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9.发明授权公开(公告)号：US08451819B2
公开(公告)日：2013-05-28
申请号：US12056206
申请日：2008-03-26
申请人： Tom Chin , Kuo-Chun Lee
发明人： Tom Chin , Kuo-Chun Lee
CPC分类号： H04W56/00 , H04B7/2681 , H04L12/413 , H04W56/007
摘要： A method for uplink frame synchronization in a subscriber station may include recording a first time stamp corresponding to a first downlink frame and recording a second time stamp corresponding to a second downlink frame. The first time stamp and the second time stamp may be used to determine a propagation delay change. Uplink transmission timing may be adjusted based on the propagation delay change that is determined.
摘要翻译： 用户站中的上行链路帧同步的方法可以包括：记录与第一下行链路帧对应的第一时间标记，并且记录与第二下行链路帧对应的第二时间戳。 可以使用第一时间戳和第二时间戳来确定传播延迟变化。 可以基于确定的传播延迟变化来调整上行链路传输定时。
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公开(公告)号：US20100220711A1
公开(公告)日：2010-09-02
申请号：US12672788
申请日：2008-08-06
申请人： Hiroyuki Ishii
发明人： Hiroyuki Ishii
IPC分类号： H04J3/06
CPC分类号： H04W56/007
摘要： A base station apparatus for communicating with a mobile station includes an out-of-synchronization determining unit configured to determine out-of-synchronization with the mobile station in downlink based on an uplink signal transmitted from the mobile station.
摘要翻译： 用于与移动台通信的基站装置包括：失步确定单元，被配置为基于从移动台发送的上行链路信号，在下行链路中确定与移动台的不同步。
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