公开(公告)号：US09450723B2

公开(公告)日：2016-09-20

申请号：US14473875

申请日：2014-08-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sudhir Ramakrishna ,  Jaspreet Singh

IPC: H04W4/00 ,  H04L5/00 ,  H04L25/02 ,  H04B7/04 ,  H04B7/06 ,  H04W72/04 ,  H04L25/03

CPC classification number: H04L5/0048 ,  H04B7/0404 ,  H04B7/0456 ,  H04B7/0697 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04W72/0413 ,  H04W72/046

Abstract: A method and an apparatus for channel estimation. The method includes identifying a set of preferred BS receive beams for each of a plurality of BS antenna SAs based on periodic pilot transmissions from a UE transmitted using predefined UE transmit beams. The method also includes transmitting a request for the UE to transmit pilot signals for the set of preferred BS receive beams. The method further includes receiving the pilot signals using the set of preferred BS receive beams. The method also includes performing channel estimation and determining the data transmission parameters based on the received pilot signals, the data transmission parameters including at least one receive beam at each UE antenna SA to be used for data reception. Additionally, the method includes transmitting, to the UE, information for identifying the at least one receive beam at each UE antenna SA to be used for data reception.

Abstract translation: 一种用于信道估计的方法和装置。 该方法包括基于使用预定义的UE发送波束发送的来自UE的周期性导频传输来识别多个BS天线SA中的每一个的优选BS接收波束集合。 该方法还包括发送对UE发送用于该组优选BS接收波束的导频信号的请求。 该方法还包括使用该组优选的BS接收波束来接收导频信号。 该方法还包括基于所接收的导频信号执行信道估计和确定数据传输参数，数据传输参数包括用于数据接收的每个UE天线SA处的至少一个接收波束。 此外，该方法包括向UE发送用于识别用于数据接收的每个UE天线SA处的至少一个接收波束的信息。

公开(公告)号：US09167597B2

公开(公告)日：2015-10-20

申请号：US13938929

申请日：2013-07-10

Applicant: Samsung Electronics Co., LTD

Inventor： Jaspreet Singh ,  Zhouyue Pi

IPC: H04W72/12 ,  H04W56/00 ,  H04L5/00

CPC classification number: H04W72/1284 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0078 ,  H04W56/0005 ,  H04W56/003 ,  H04W56/0045

Abstract: Methods for preventing timing collisions in a wireless communication network include transmitting a data uplink symbol of normal duration via a first base pair using a first timing advance (TA) corresponding to the first base pair. Scheduling to transmit a second uplink symbol via a second base pair (BP) corresponding to the transmit RF chain. Predicting a timing collision will occur based on a different between the first TA and a second TA corresponding to the second BP. Preventing the timing collision by: reducing the duration of the second symbol by an adjustment amount calculated based on the first TA and the second TA; inserting a guard interval to delay transmission of the second symbol by the calculated adjustment amount; and increasing the duration of a cyclic prefix of the second symbol but refraining from transmitting a portion of the enlarged CP.

Abstract translation: 用于防止无线通信网络中的定时冲突的方法包括使用与第一基对对应的第一定时提前（TA）经由第一基对对发送正常持续时间的数据上行符号。 调度以经由对应于发射RF链的第二基对（BP）来发送第二上行链路符号。 基于第一TA与对应于第二BP的第二TA之间的不同，预测定时碰撞将发生。 通过以下方式防止定时冲突：通过基于第一TA和第二TA计算的调整量来减少第二符号的持续时间; 插入保护间隔以将所述第二符号的传输延迟所述计算的调整量; 并且增加第二符号的循环前缀的持续时间，但是不发送放大的CP的一部分。

公开(公告)号：US20140016620A1

公开(公告)日：2014-01-16

申请号：US13938929

申请日：2013-07-10

Applicant: Samsung Electronics Co., LTD

Inventor： Jaspreet Singh ,  Zhouyue Pi

IPC: H04W72/12

CPC classification number: H04W72/1284 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0078 ,  H04W56/0005 ,  H04W56/003 ,  H04W56/0045

Abstract: Methods for preventing timing collisions in a wireless communication network include transmitting a data uplink symbol of normal duration via a first base pair using a first timing advance (TA) corresponding to the first base pair. Scheduling to transmit a second uplink symbol via a second base pair (BP) corresponding to the transmit RF chain. Predicting a timing collision will occur based on a different between the first TA and a second TA corresponding to the second BP. Preventing the timing collision by: reducing the duration of the second symbol by an adjustment amount calculated based on the first TA and the second TA; inserting a guard interval to delay transmission of the second symbol by the calculated adjustment amount; and increasing the duration of a cyclic prefix of the second symbol but refraining from transmitting a portion of the enlarged CP.

Abstract translation: 用于防止无线通信网络中的定时冲突的方法包括使用与第一基对对应的第一定时提前（TA）经由第一基对对发送正常持续时间的数据上行符号。 调度以经由对应于发射RF链的第二基对（BP）来发送第二上行链路符号。 基于第一TA与对应于第二BP的第二TA之间的不同，预测定时碰撞将发生。 通过以下方式防止定时冲突：通过基于第一TA和第二TA计算的调整量来减少第二符号的持续时间; 插入保护间隔以将所述第二符号的传输延迟所述计算的调整量; 并且增加第二符号的循环前缀的持续时间，但是不发送放大的CP的一部分。