公开(公告)号：US08830839B2

公开(公告)日：2014-09-09

申请号：US13521905

申请日：2010-03-22

Applicant: Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

Inventor： Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

IPC: H04L1/00 ,  H04B7/155 ,  H04L25/02 ,  H04L12/26 ,  H04B7/06

CPC classification number: H04L1/0026 ,  H04B7/065 ,  H04B7/155 ,  H04L1/003 ,  H04L25/0202 ,  H04L43/08

Abstract: A backhaul link is established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device. The channel response of the backhaul link is determined by estimating first and second parts of the backhaul link channel response, the second part changing faster than the first part. The first part of the backhaul link channel response is estimated by calculating an average of the backhaul link channel response over a predetermined period at the relay and the second part is estimated by calculating variation in the backhaul link channel response over the predetermined period at the relay. Quantized versions of the first and second parts of the backhaul link channel response are transmitted from the relay to the base station over the backhaul link.

Abstract translation: 在基站和中继站之间建立回程链路，帮助基站通过在中继站和移动设备之间建立的接入链路与移动设备进行通信。 通过估计回程链路信道响应的第一和第二部分来确定回程链路的信道响应，第二部分比第一部分更快地改变。 回程链路信道响应的第一部分通过计算中继站上的预定时段内的回程链路信道响应的平均值来估计，并且通过在继电器上计算预定时段内的回程链路信道响应的变化来估计第二部分 。 回程链路信道响应的第一和第二部分的量化版本通过回程链路从中继站发送到基站。

公开(公告)号：US20120300654A1

公开(公告)日：2012-11-29

申请号：US13521905

申请日：2010-03-22

Applicant: Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

Inventor： Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

IPC: H04W24/00 ,  H04W88/08 ,  H04W88/04

CPC classification number: H04L1/0026 ,  H04B7/065 ,  H04B7/155 ,  H04L1/003 ,  H04L25/0202 ,  H04L43/08

Abstract: A backhaul link is established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device. The channel response of the back-haul link is determined by estimating first and second parts of the backhaul link channel response, the second part changing faster than the first part. The first part of the backhaul link channel response is estimated by calculating an average of the backhaul link channel response over a predetermined period at the relay and the second part is estimated by calculating variation in the backhaul link channel response over the predetermined period at the relay. Quantized versions of the first and second parts of the backhaul link channel response are transmitted from the relay to the base station over the backhaul link

Abstract translation: 在基站和中继站之间建立回程链路，帮助基站通过在中继站和移动设备之间建立的接入链路与移动设备进行通信。 通过估计回程链路信道响应的第一和第二部分来确定回程链路的信道响应，第二部分比第一部分更快地改变。 回程链路信道响应的第一部分通过计算中继站上的预定时段内的回程链路信道响应的平均值来估计，并且通过在继电器上计算预定时段内的回程链路信道响应的变化来估计第二部分 。 回程链路信道响应的第一和第二部分的量化版本通过回程链路从中继站传送到基站

公开(公告)号：US20110274185A1

公开(公告)日：2011-11-10

申请号：US13145223

申请日：2009-01-19

Applicant: Jiansong Gan ,  Dennis Hui

Inventor： Jiansong Gan ,  Dennis Hui

IPC: H04L27/00

CPC classification number: H04L27/2647 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0026 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A method and an arrangement (600) in a user equipment (140) for quantizing channel state information in a coordinated multi-point transmission radio communication system (100). A dominant path is between the user equipment (140) and a first network node (110) and a non-dominant path is between the user equipment (140) and a second network node (120, 130). A ratio of the non-dominant path channel response, such as fast fading, to the dominant path channel response is quantized by using a codebook disclosed herein. A method and an arrangement (400) for generating a codebook by applying a log squared error distortion measure in an iterative algorithm. A method and an arrangement (900) in a user equipment (140) for allocating available bits among at least two quantized ratios in a channel state information feedback procedure. The bits are allocated by means of selecting (270) at least one codebook based on statistic properties, such as path gain, of the non-dominant path.

Abstract translation: 一种用于在协调的多点传输无线电通信系统（100）中量化信道状态信息的用户设备（140）中的方法和装置（600）。 主要路径在用户设备（140）和第一网络节点（110）之间，并且非主导路径在用户设备（140）和第二网络节点（120,130）之间。 通过使用本文公开的码本来量化非优势路径信道响应（例如快速衰落）与主路径信道响应的比率。 一种用于通过在迭代算法中应用对数平方误差失真测量来生成码本的方法和装置（400）。 一种在用户设备（140）中用于在信道状态信息反馈过程中在至少两个量化比率中分配可用比特的方法和装置（900）。 通过基于非主导路径的统计特性（例如路径增益）来选择（270）至少一个码本来分配比特。

公开(公告)号：US08774136B2

公开(公告)日：2014-07-08

申请号：US13145223

申请日：2009-01-19

Applicant: Jiansong Gan ,  Dennis Hui

Inventor： Jiansong Gan ,  Dennis Hui

IPC: H04L27/26

CPC classification number: H04L27/2647 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0026 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A method and an arrangement (600) in a user equipment (140) for quantizing channel state information in a coordinated multi-point transmission radio communication system (100). A dominant path is between the user equipment (140) and a first network node (110) and a non-dominant path is between the user equipment (140) and a second network node (120, 130). A ratio of the non-dominant path channel response, such as fast fading, to the dominant path channel response is quantized by using a codebook disclosed herein. A method and an arrangement (400) for generating a codebook by applying a log squared error distortion measure in an iterative algorithm. A method and an arrangement (900) in a user equipment (140) for allocating available bits among at least two quantized ratios in a channel state information feedback procedure. The bits are allocated by means of selecting (270) at least one codebook based on statistic properties, such as path gain, of the non-dominant path.

Abstract translation: 一种用于在协调的多点传输无线电通信系统（100）中量化信道状态信息的用户设备（140）中的方法和装置（600）。 主要路径在用户设备（140）和第一网络节点（110）之间，并且非主要路径在用户设备（140）和第二网络节点（120,130）之间。 通过使用本文公开的码本来量化非优势路径信道响应（例如快速衰落）与主路径信道响应的比率。 一种用于通过在迭代算法中应用对数平方误差失真测量来生成码本的方法和装置（400）。 一种在用户设备（140）中用于在信道状态信息反馈过程中在至少两个量化比率中分配可用比特的方法和装置（900）。 通过基于非主导路径的统计特性（例如路径增益）来选择（270）至少一个码本来分配比特。

公开(公告)号：US09179390B2

公开(公告)日：2015-11-03

申请号：US12919639

申请日：2009-01-21

Applicant: Qingyu Miao ,  Jiansong Gan ,  Rong Hu ,  Afif Osseiran ,  Zhang Zhang

Inventor： Qingyu Miao ,  Jiansong Gan ,  Rong Hu ,  Afif Osseiran ,  Zhang Zhang

IPC: H04L12/28 ,  H04W40/02 ,  H04L12/707

CPC classification number: H04W40/02 ,  H04L45/125 ,  H04L45/22

Abstract: A communication unit for use in a wireless communication system in which a transmitting unit is arranged for wireless communication with at least one receiving unit, said network further comprising at least a first and a second relay node arranged to receive a signal from the transmitting unit and forward it to the receiving unit, said node being characterized in that it comprises a processor arranged to perform the following steps: identifying at least a first and a second communication path between the transmitting unit and the receiving unit, at least one of said paths involving the first or the second relay node, calculating a first and a second capacity of at least one hop in the first and second communication path, respectively communicating information related to the first and second capacity to at least one other communication node in the wireless network.

Abstract translation: 一种在无线通信系统中使用的通信单元，其中发送单元被布置用于与至少一个接收单元的无线通信，所述网络还包括至少第一和第二中继节点，被布置为从所述发送单元接收信号， 所述节点的特征在于，其包括被配置为执行以下步骤的处理器：识别所述发送单元和所述接收单元之间的至少第一和第二通信路径，所述至少一个所述路径涉及 第一或第二中继节点，计算第一和第二通信路径中的至少一跳的第一和第二容量，分别将与第一和第二容量相关的信息传送到无线网络中的至少一个其他通信节点。

公开(公告)号：US20130090121A1

公开(公告)日：2013-04-11

申请号：US13521192

申请日：2010-01-15

Applicant: Zhang Zhang ,  Yin Liu ,  Jiansong Gan

Inventor： Zhang Zhang ,  Yin Liu ,  Jiansong Gan

IPC: H04W72/04

CPC classification number: H04W72/04 ,  H04B7/15542 ,  H04B7/2606 ,  H04W28/08 ,  H04W84/047

Abstract: A method of allocating radio resources to communication links of a wireless communication system based on status parameters of each of the links, the communication system having a plurality of network nodes, a plurality of relays associated with the network nodes, and a terminal accessing the communication system. A first radio resource allocation may be determined by balancing the performance of a relay-to-network-node communication link of each relay against the performance of a corresponding terminal-to-relay communication link. A second allocation may be determined by balancing the performance of the relay-to-network-node communication link of each relay against the performance of a terminal-to-network-node communication link. A final allocation may be determined by calculating a weighted average value of the first and second allocations.

Abstract translation: 基于每个链路的状态参数，具有多个网络节点的通信系统，与网络节点相关联的多个中继和向该通信进行通信的终端，分配无线资源到无线通信系统的通信链路的方法 系统。 可以通过平衡每个中继的中继到网络节点通信链路的性能与对应的终端到中继通信链路的性能来确定第一无线电资源分配。 可以通过平衡每个中继的中继到网络节点通信链路的性能与终端到网络节点通信链路的性能来确定第二分配。 可以通过计算第一和第二分配的加权平均值来确定最终分配。

公开(公告)号：US20120058719A1

公开(公告)日：2012-03-08

申请号：US13318528

申请日：2009-05-04

Applicant: Jiansong Gan ,  Pål Frenger ,  Yin Liu ,  Zhang Zhang

Inventor： Jiansong Gan ,  Pål Frenger ,  Yin Liu ,  Zhang Zhang

IPC: H04W52/24

CPC classification number: H04W52/46 ,  H04B7/15535 ,  H04B7/15578 ,  H04B7/2606

Abstract: A method of operating a repeater in a communications system is disclosed, wherein a repeater gain to be used for the amplification of a signal is adjusted in dependence on an estimate of an interference by the repeater and by the receiver. The interference at the receiver is feed back to the relay node.

Abstract translation: 公开了一种在通信系统中操作中继器的方法，其中根据中继器和接收机的干扰估计来调整要用于信号放大的中继器增益。 接收机的干扰反馈给中继节点。

公开(公告)号：US08837373B2

公开(公告)日：2014-09-16

申请号：US13642940

申请日：2011-11-01

Applicant: Jiansong Gan ,  Zhiheng Guo ,  Shaohua Li

Inventor： Jiansong Gan ,  Zhiheng Guo ,  Shaohua Li

IPC: H04W4/00 ,  H04W56/00 ,  H04B7/155 ,  H04W84/04 ,  H04W88/08

CPC classification number: H04W56/007 ,  H04B7/155 ,  H04W56/001 ,  H04W84/047 ,  H04W88/085

Abstract: 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).

Abstract translation: 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。

公开(公告)号：US08599952B2

公开(公告)日：2013-12-03

申请号：US13120010

申请日：2008-09-24

Applicant: Peter Larsson ,  Jiansong Gan ,  Qingyu Miao

Inventor： Peter Larsson ,  Jiansong Gan ,  Qingyu Miao

IPC: H04B7/02

CPC classification number: H04B7/022 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0658 ,  H04B17/318

Abstract: Uplink overhead is significantly reduced in a MU-COMP wireless communication network by exploiting the dissimilarity of received signal strength in signals transmitted by geographically distributed transmit antennas, as seen by receiving UEs. Each UE calculates a quantized normalization measure of channel elements for a channel weakly received from a first transmitter to that for a channel strongly received from a second transmitter. The quantized normalization measure may be modeled as a ratio of complex Gaussian variables, and quantized in phase and amplitude by making simplifying assumptions. The ratios are quantized, and transmitted to the network using far fewer bits than would be required to transmit the full channel state information. The network uses the quantized normalization measures to set the transmitter weights.

Abstract translation: MU-COMP无线通信网络中的上行链路开销明显减少，这是通过接收UE所看到的，利用地理分布式发射天线发射的信号中接收信号强度的不相似性。 每个UE计算对于从第一发射机弱接收的信道的信道单元的量化归一化度量，以及对于从第二发射机强烈接收的信道。 量化归一化测量可以通过简化假设来建模为复数高斯变量的比率，并以相位和幅度量化。 这些比率被量化，并且使用比传输全通道状态信息所需的位少得多的比特来传送到网络。 网络使用量化的归一化度量来设置发射机的权重。

公开(公告)号：US20130136041A1

公开(公告)日：2013-05-30

申请号：US13816354

申请日：2010-08-13

Applicant: Christian Hoymann ,  Jiansong Gan

Inventor： Christian Hoymann ,  Jiansong Gan

IPC: H04J3/16

CPC classification number: H04W72/082 ,  H04J3/16 ,  H04W24/02 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0486

Abstract: The present invention is directed to methods for adjusting a guard period in a cellular wireless communication system, to a base station adapted to adjust a guard period, and to a network management entity for adjusting a guard period. One method comprises the steps: obtaining (S1) an indication of at least one downlink frame for an interference measurement; transmitting (S2) during the at least one indicated downlink frame an interference signal; measuring (S3) interference at least during a part of the guard period succeeding the indicated downlink frame; and setting (S4) at least one of an end time of at least one subsequence.

Abstract translation: 本发明涉及用于调整蜂窝无线通信系统中的保护周期，适用于调整保护周期的基站以及用于调整保护周期的网络管理实体的方法。 一种方法包括以下步骤：获得（S1）用于干扰测量的至少一个下行链路帧的指示; 在所述至少一个指示的下行链路帧期间发送（S2）干扰信号; 至少在所指示的下行链路帧之后的保护周期的一部分期间测量（S3）干扰; 以及设置（S4）至少一个子序列的结束时间中的至少一个。