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1. 发明授权

US10028153B2 Efficient beam scanning for high-frequency wireless networks 有权
公开(公告)号：US10028153B2
公开(公告)日：2018-07-17
申请号：US14531494
申请日：2014-11-03
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Dennis Hui , Johan Axnäs , Robert Baldemair
IPC分类号： H04W4/00 , H04W16/28 , H04B7/06
摘要： Systems and methods relating to non-adaptive beam scanning in a wireless network are disclosed. In some embodiments, a method of operation of a transmit node to perform non-adaptive beam scanning for transmit beam patterns of the transmit node that partition a service coverage area of the transmit node into transmit partition cells is provided. The method transmitting a known signal using each of multiple scanning beam patterns for each of multiple beam scanning stages over non-overlapping radio resource slots. The scanning beam patterns for the beam scanning stages are such that each unique combination of scanning beam patterns consisting of one scanning beam pattern from each of the beam scanning stages corresponds to a different transmit beam pattern of the transmit node. This multi-stage beam scanning approach provides an exponentially more efficient process for beam scanning than the conventional Sequential Beam Sweeping (SBS) approach.

2. 发明授权

US09872332B2 Energy efficient operation for wireless access nodes in a low-load service area within a dense deployment of wireless access nodes 有权
公开(公告)号：US09872332B2
公开(公告)日：2018-01-16
申请号：US13627009
申请日：2012-09-26
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Jiann-Ching Guey , Kumar Balachandran , Dennis Hui
IPC分类号： G08C17/00 , H04W76/04 , H04W52/02
CPC分类号： H04W76/28 , H04W52/0206 , H04W52/0216 , Y02B70/30 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/24 , Y02D70/25
摘要： Systems and methods are disclosed for efficient operation of wireless access nodes in a dense deployment of wireless access nodes in a cellular communication network. In general, the dense deployment of wireless access nodes includes multiple wireless access nodes in a service area. The service area is preferably, but not necessarily, a low-load service area. As used herein, a low-load service area is an area within an overall service area of the dense deployment of wireless access nodes in which all wireless access nodes are not needed to provide a desired data capacity. Overlapping radio coverage areas of the wireless access nodes in, or serving, the service area are leveraged to enable efficient operation of the wireless access nodes in the service area.

3. 发明授权

US09713144B2 Methods and apparatus for routing communication using slotted resources of radio access mesh networks 有权
公开(公告)号：US09713144B2
公开(公告)日：2017-07-18
申请号：US14650499
申请日：2012-12-10
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Johan Axnäs , Kumar Balachandran , Robert Baldemair , Dennis Hui , Hugo Tullberg
IPC分类号： H04W40/02 , H04W40/12 , H04L12/707 , H04W72/04 , H04W28/26 , H04W40/16
CPC分类号： H04W72/0446 , H04L45/22 , H04W28/26 , H04W40/02 , H04W40/16 , Y02D70/1224 , Y02D70/1226 , Y02D70/1242 , Y02D70/142 , Y02D70/146 , Y02D70/22 , Y02D70/30 , Y02D70/34
摘要： Methods and network nodes (700-720) route communications between pairs of source and destination nodes through network nodes (700-720) of a wireless communication system. One resource slot of a wireless communication link is selected (1200) between each of a sequence of the network nodes (700-720) along a communication route between one pair of the source and destination nodes. Another resource slot of the wireless communication link is selected (1202) between at least some of the sequence of the network nodes (700-720) along the communication route between the one pair of the source and destination nodes. Selection of the other resource slot between each of the sequence of the network nodes along the communication route can be constrained to selection among resource slots that are available from only the sequence of the network nodes along the communication route between the one pair of the source and destination nodes.

4. 发明申请

US20170047947A1 RATE-COMPATIBLE POLAR CODES 审中-公开
标题翻译：速率兼容的极性代码
公开(公告)号：US20170047947A1
公开(公告)日：2017-02-16
申请号：US14824694
申请日：2015-08-12
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Songnam Hong , Dennis Hui , Ivana Maric
IPC分类号： H03M13/29 , H04L1/00
CPC分类号： H03M13/2906 , H03M13/13 , H03M13/6368 , H04L1/0041 , H04L1/0064 , H04L1/0067
摘要： Systems and methods are disclosed herein relating to rate-compatible polar codes and the use thereof in a wireless communications system. In some embodiments, a transmit node operable for use in a wireless communications system comprises a rate-compatible polar encoder operable to encode information bits to provide coded bits utilizing parallel concatenated polar codes. The transmit node further comprises a transmitter operable to transmit the plurality of coded bits. In this manner, the transmit node may, in some embodiments, use polar codes having different coding rates to adapt to time-varying channel conditions.
摘要翻译：这里公开了与速率兼容的极性码及其在无线通信系统中的使用有关的系统和方法。在一些实施例中，可用于在无线通信系统中使用的发射节点包括速率兼容极地编码器，其可操作以对信息比特进行编码，以使用并行级联的极性码来提供编码比特。发射节点还包括可操作以发射多个编码比特的发射机。以这种方式，在一些实施例中，发射节点可以使用具有不同编码速率的极码来适应时变信道条件。

5. 发明申请

US20150312906A1 Methods and Apparatus for Routing Communication using Slotted Resources of Radio Access Mesh Networks 有权
标题翻译：使用无线接入网状网络的分配资源进行路由通信的方法和装置
公开(公告)号：US20150312906A1
公开(公告)日：2015-10-29
申请号：US14650499
申请日：2012-12-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Johan Axnäs , Kumar Balachandran , Robert Baldemair , Dennis Hui , Hugo Tullberg
IPC分类号： H04W72/04 , H04W28/26 , H04W40/16 , H04L12/707
CPC分类号： H04W72/0446 , H04L45/22 , H04W28/26 , H04W40/02 , H04W40/16 , Y02D70/1224 , Y02D70/1226 , Y02D70/1242 , Y02D70/142 , Y02D70/146 , Y02D70/22 , Y02D70/30 , Y02D70/34
摘要： Methods and network nodes (700-720) route communications between pairs of source and destination nodes through network nodes (700-720) of a wireless communication system. One resource slot of a wireless communication link is selected (1200) between each of a sequence of the network nodes (700-720) along a communication route between one pair of the source and destination nodes. Another resource slot of the wireless communication link is selected (1202) between at least some of the sequence of the network nodes (700-720) along the communication route between the one pair of the source and destination nodes. Selection of the other resource slot between each of the sequence of the network nodes along the communication route can be constrained to selection among resource slots that are available from only the sequence of the network nodes along the communication route between the one pair of the source and destination nodes.
摘要翻译：方法和网络节点（700-720）通过无线通信系统的网络节点（700-720）路由源和目的节点对之间的通信。沿着一对源节点和目的地节点之间的通信路由在每个网络节点序列（700-720）之间选择（1200）无线通信链路的一个资源时隙。在沿着一对源节点和目的地节点之间的通信路由的网络节点（700-720）的至少一些序列之间选择（1202）无线通信链路的另一资源时隙（1202）。沿着通信路由选择网络节点的每个序列之间的其他资源时隙可以被限制为在仅一个网络节点的序列之间沿着通信路由在一对源和目标节点。

6. 发明授权

US08989050B2 Graph-based distributed coordination methods for wireless communication networks 有权
标题翻译：用于无线通信网络的基于图形的分布式协调方法
公开(公告)号：US08989050B2
公开(公告)日：2015-03-24
申请号：US13688561
申请日：2012-11-29
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Charles Casimiro Cavalcante , Dennis Hui , Igor Moáco Guerreiro
IPC分类号： H04L12/28 , H04W72/04 , H04W24/02 , H04W16/02 , H04L12/24
CPC分类号： H04W72/0426 , H04L41/0823 , H04W16/02 , H04W24/02
摘要： Systems and methods are disclosed for graph-based distributed parameter coordination in a communication network. In general, discrete local parameters to be coordinated among communication nodes in the communication network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of the sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communication network. In one embodiment, the communication network is a wireless communication network. In one specific embodiment, the wireless communication network is a cellular communication network.
摘要翻译：公开了用于通信网络中基于图的分布式参数协调的系统和方法。通常，使用因子图来建模在通信网络中的通信节点之间协调的离散局部参数及其相应的性能度量或成本。基于因子图，应用和积算法的一个变体，即最小和算法，以便通信节点通过与其相邻通信节点的迭代消息传递来决定本地参数的最优值对于通过通信网络共同优化全局性能度量的通信节点。在一个实施例中，通信网络是无线通信网络。在一个具体实施例中，无线通信网络是蜂窝通信网络。

7. 发明申请

US20130142082A1 GRAPH-BASED DISTRIBUTED COORDINATION METHODS FOR WIRELESS COMMUNICATION NETWORKS 有权
标题翻译：基于图形的无线通信网络的分布式协调方法
公开(公告)号：US20130142082A1
公开(公告)日：2013-06-06
申请号：US13688561
申请日：2012-11-29
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Charles Casimiro Cavalcante , Dennis Hui , Igor Moáco Guerreiro
IPC分类号： H04W72/04
CPC分类号： H04W72/0426 , H04L41/0823 , H04W16/02 , H04W24/02
摘要： Systems and methods are disclosed for graph-based distributed parameter coordination in a communication network. In general, discrete local parameters to be coordinated among communication nodes in the communication network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of the sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communication network. In one embodiment, the communication network is a wireless communication network. In one specific embodiment, the wireless communication network is a cellular communication network.
摘要翻译：公开了用于通信网络中基于图的分布式参数协调的系统和方法。通常，使用因子图来建模在通信网络中的通信节点之间协调的离散局部参数及其相应的性能度量或成本。基于因子图，应用和积算法的一个变体，即最小和算法，以便通信节点通过与其相邻通信节点的迭代消息传递来决定本地参数的最优值对于通过通信网络共同优化全局性能度量的通信节点。在一个实施例中，通信网络是无线通信网络。在一个具体实施例中，无线通信网络是蜂窝通信网络。

8. 发明申请

US20130121448A1 CHANNEL ESTIMATION AND EQUALIZATION FOR HARD-LIMITED SIGNALS 有权
标题翻译：硬信号的信道估计和均衡
公开(公告)号：US20130121448A1
公开(公告)日：2013-05-16
申请号：US13742270
申请日：2013-01-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Dennis Hui , Kambiz Zangi
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04L25/0228 , H04L25/03019
摘要： The present invention provides a method and apparatus for channel estimation when the amplitude of a received signal is hard-limited. A channel estimator computes amplitude estimates for the received signal based on the phase samples of the received signal. The amplitude estimates may comprise the expected values of the amplitude given the phase samples. The channel estimator then computes revised channel estimates based on the amplitude estimates and the phase samples. The process may be performed iteratively to refine the channel estimates during each iteration.
摘要翻译：本发明提供了当接收信号的幅度受到严格限制时的信道估计方法和装置。信道估计器基于接收信号的相位采样来计算接收信号的幅度估计。幅度估计可以包括给定相位样本的振幅的预期值。然后，信道估计器基于幅度估计和相位样本来计算修正的信道估计。可以迭代地执行该过程以在每次迭代期间优化信道估计。

9. 发明授权

US10080146B2 Antenna beam control 有权
公开(公告)号：US10080146B2
公开(公告)日：2018-09-18
申请号：US14206120
申请日：2014-03-12
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Lars Sundström , Daniel Araújo , Dennis Hui , Andres Reial
IPC分类号： H04W16/28 , H04W64/00 , H04B7/06 , H04B7/08
CPC分类号： H04W16/28 , H04B7/0617 , H04B7/086 , H04W64/006
摘要： Spatial sensor data, such as position, movement and rotation, which is provided by a sensor in a wireless communication device in a wireless communication system is used. By using the spatial sensor data it is possible to calculate predicted spatial data for use in controlling antenna beams for transmission as well as reception in the wireless communication system.

10. 发明授权

US09654187B2 Efficient uplink transmission of channel state information 有权
公开(公告)号：US09654187B2
公开(公告)日：2017-05-16
申请号：US14296273
申请日：2014-06-04
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Dennis Hui , Jung-Fu Cheng , Kambiz Zangi , Leonid Krasny
IPC分类号： H04B7/02 , H04B7/024 , H04B15/00 , H04B7/06 , H04L1/20 , H04B17/336 , H04B17/364 , H04B7/08 , H04L1/00 , H04L25/02
CPC分类号： H04B7/024 , H04B7/0606 , H04B7/0626 , H04B7/0639 , H04B7/0691 , H04B7/0874 , H04B15/00 , H04B17/336 , H04B17/364 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/0026 , H04L1/20 , H04L25/0212 , H04L25/022 , H04L25/0224
摘要： A User Equipment in a wireless communication network includes a multiplicity of antennas, from which a subset of antennas is selected using a selection scheme synchronized to the network. A set of sub-carriers is selected from a plurality of sub-carriers using a selection scheme synchronized to the network. The UE receives a plurality of known reference symbols over the selected set of sub-carriers and through the selected subset of antennas. A frequency response for each selected sub-carrier is estimated over only the selected subset of antennas. The results are quantized and transmitted to the network on an uplink control channel.

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