公开(公告)号：US09391739B2

公开(公告)日：2016-07-12

申请号：US14617648

申请日：2015-02-09

Applicant: Imagination Technologies Limited

Inventor： Mohammed El-Hajjar ,  Paul Murrin ,  Adrian J. Anderson

IPC: H04L27/00 ,  H04L1/00 ,  H04L25/06 ,  H04L27/38 ,  H04L27/26

CPC classification number: H04L27/2647 ,  H03M13/41 ,  H04L1/0054 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/067 ,  H04L27/38

Abstract: Methods and apparatus for efficient demapping of constellations are described. In an embodiment, these methods may be implemented within a digital communications receiver, such as a Digital Terrestrial Television receiver. The method reduces the number of distance metric calculations which are required to calculate soft information in the demapper by locating the closest constellation point to the received symbol. This closest constellation point is identified based on a comparison of distance metrics which are calculated parallel to either the I- or Q-axis. The number of distance metric calculations may be reduced still further by identifying a local minimum constellation point for each bit in the received symbol and these constellation points are identified using a similar method to the closest constellation point. Where the system uses rotated constellations, the received symbol may be unrotated before any constellation points are identified.

公开(公告)号：US20160192435A1

公开(公告)日：2016-06-30

申请号：US15062572

申请日：2016-03-07

Applicant: Intel Corporation

Inventor： Maruti Gupta ,  Rath Vannithamby ,  Puneet Jain ,  Ali Taha Koc

IPC: H04W76/04 ,  H04W52/02

CPC classification number: H04W72/042 ,  H04B7/0697 ,  H04B15/00 ,  H04L1/0025 ,  H04L1/0038 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/06 ,  H04L5/0037 ,  H04L5/14 ,  H04L27/34 ,  H04L27/362 ,  H04W4/70 ,  H04W8/02 ,  H04W24/00 ,  H04W24/08 ,  H04W52/0209 ,  H04W52/0212 ,  H04W52/0251 ,  H04W52/0258 ,  H04W52/143 ,  H04W52/242 ,  H04W52/244 ,  H04W52/325 ,  H04W72/02 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1215 ,  H04W72/1278 ,  H04W76/19 ,  H04W76/28 ,  H04W84/042 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

Abstract: An apparatus and method for initiating discontinuous reception (DRX) operation in a user equipment (UE) are disclosed herein. Applications running on the UE are monitored by the UE to identify one or more inactivity trigger events associated with the application(s). The UE includes an application-radio cross layer to process the application information, including the inactivity trigger event, for use by a radio layer. The radio layer of the UE determines initiation of the DRX operation in accordance with the application information, including the inactivity trigger event, provided by the application-radio cross layer and device characteristics information.

Abstract translation: 本文公开了一种用于在用户设备（UE）中启动不连续接收（DRX）操作的装置和方法。 在UE上运行的应用由UE监视以识别与该应用相关联的一个或多个不活动触发事件。 UE包括应用无线电交叉层，以处理由无线电层使用的应用信息，包括不活动触发事件。 UE的无线层根据应用无线电跨层提供的应用信息（包括不活动触发事件）和设备特征信息来确定DRX操作的开始。

公开(公告)号：US20160173229A1

公开(公告)日：2016-06-16

申请号：US14902771

申请日：2014-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Kwangseok NOH ,  Jinmin KIM ,  Kukheon CHOI ,  Jaehoon CHUNG ,  Kitae KIM

IPC: H04L1/00 ,  H03M13/11 ,  H03M13/29 ,  H04W72/08 ,  H04L5/00

CPC classification number: H04L1/0045 ,  H03M13/1102 ,  H03M13/1111 ,  H03M13/2909 ,  H03M13/3723 ,  H03M13/612 ,  H03M13/658 ,  H04L1/0057 ,  H04L1/06 ,  H04L5/001 ,  H04L5/006 ,  H04W72/085 ,  H04W88/02

Abstract: The present invention relates to a method for receiving signals in a wireless communication system. A method by which a terminal receives signals in a wireless communication system, according to one embodiment of the present invention, can comprise the steps of: receiving N signals through N channels; and decoding the N signals by using a low density parity check (LDPC) sum-product channel decoder, wherein a first weight value is applied to a variable node of the LDPC sum-product channel decoder, a second weight value is applied to a reception signal node thereof, and the first weight value is less than 1 for channels of which a channel state has a reference value or less among the N channels.

Abstract translation: 本发明涉及一种在无线通信系统中接收信号的方法。 根据本发明的一个实施例，终端在无线通信系统中接收信号的方法可以包括以下步骤：通过N个信道接收N个信号; 以及通过使用低密度奇偶校验（LDPC）和乘积信道解码器对N个信号进行解码，其中第一加权值被施加到LDPC和乘积信道解码器的可变节点，第二加权值被应用于接收 信道节点，并且对于信道状态在N个信道中具有参考值或更小的信道，第一加权值小于1。

公开(公告)号：US09363686B2

公开(公告)日：2016-06-07

申请号：US13707511

申请日：2012-12-06

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Guido R. Frederiks ,  Vincent K. Jones ,  Qinghai Gao

IPC: H04W72/06 ,  H04W24/02 ,  H04J9/00 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L1/20

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04J9/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/203 ,  H04W28/06 ,  Y02D50/10

Abstract: A method of providing rate adaptation in a multi-user wireless communication system including single-user beamforming (SU-BF) and multi-user multiple-input multiple-output (MU-MIMO) is described. In this method, a master rate, which is a modulation and coding scheme (MCS) for the SU-BF, is determined. An MCS for each transmit mode is derived from the master rate using a rate mapping. Using the results from the mapping, the master rate, instead of the MCS for each transmit mode, is tracked. In one embodiment, a mapping calibration is periodically performed.

Abstract translation: 描述了在包括单用户波束成形（SU-BF）和多用户多输入多输出（MU-MIMO）的多用户无线通信系统中提供速率适配的方法。 在该方法中，确定作为SU-BF的调制和编码方案（MCS）的主速率。 使用速率映射从主速率导出每个发送模式的MCS。 使用映射的结果，跟踪每个传输模式的主速率而不是MCS。 在一个实施例中，定期执行映射校准。

公开(公告)号：US09357525B2

公开(公告)日：2016-05-31

申请号：US13925513

申请日：2013-06-24

Applicant: FutureWei Technologies, Inc.

Inventor： Carmela Cozzo

IPC: H04B7/04 ,  H04W72/02 ,  H04B7/06 ,  H04L1/06 ,  H04L1/18 ,  H04W52/36

CPC classification number: H04W52/42 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/06 ,  H04L1/1825 ,  H04L1/1867 ,  H04L1/1887 ,  H04L1/1893 ,  H04W52/146 ,  H04W52/367 ,  H04W72/02

Abstract: Embodiments are provided for efficient uplink multiple-input multiple-output (MIMO) transmission and retransmission schemes. The embodiments include determining transmission rank and stream for MIMO when there are pending retransmissions on one stream. When retransmitting previously failed transmitted data at a user device, the rank and stream are determined according to a relation between a defined minimum TBS and a TBS selected for transmission according to an enhanced dedicated channel (E-DCH) transport format combination (E-TFC) selection procedure. An embodiment method includes detecting, at a user device, failed transmission of data on a secondary stream. If the selected TBS is less than the minimum TBS, then the user device selects rank-1 for retransmitting, on the primary stream, the data in the failed transmission regardless of rank indication by the network. Otherwise, the user device selects rank-2 for retransmitting, on the secondary stream, the data given a rank-2 indication.

Abstract translation: 提供了用于高效的上行链路多输入多输出（MIMO）传输和重传方案的实施例。 实施例包括当在一个流上存在未决重传时确定用于MIMO的传输秩和流。 当在用户设备上重传先前发生故障的传输数据时，根据增强型专用信道（E-DCH）传输格式组合（E-DFC）传输格式组合（E-DFC），根据所定义的最小TBS和被选择传输的TBS之间的关系来确定秩和流 ）选择程序。 实施例方法包括在用户设备处检测次要流上的数据的失败传输。 如果所选择的TBS小于最小TBS，则用户设备在主流上选择等级-1，用于重传在故障传输中的数据，而不考虑网络的秩指示。 否则，用户设备在二次流上选择等级-2以重发在给定等级-2指示的数据。

公开(公告)号：US09337963B2

公开(公告)日：2016-05-10

申请号：US13266688

申请日：2010-04-27

Applicant: Zheng Zhao ,  Xufeng Zheng

Inventor： Zheng Zhao ,  Xufeng Zheng

IPC: H04L27/00 ,  H03K9/06 ,  H04L5/12 ,  H04L1/18 ,  H04L1/06 ,  H04B7/06

CPC classification number: H04L1/1893 ,  H04B7/0613 ,  H04L1/06

Abstract: A transmission method for multi-antenna retransmission is provided, comprising steps of: generating the bits to be transmitted by respective antennas; mapping the bits to be transmitted by the respective antennas into symbols; and multiplying by a constant the vector constituted by the mapped symbols transmitted by multiple antennas, wherein the resulting vector is orthogonal to the matrix constituted by the symbols previously transmitted by multiple antennas, and transmitting the orthogonal symbols. According to the method of the present invention, the remapped symbols transmitted by the respective antennas and the symbols previously transmitted by the respective antennas constitute a matrix that has an orthogonal property. The orthogonal property can be used to effectively detect signals. In addition, the method has a reception algorithm with low complexity and brings about significant performance gains over conventional methods.

Abstract translation: 提供了一种用于多天线重传的传输方法，包括以下步骤：产生要被各个天线发射的比特; 将由各个天线发送的比特映射成符号; 并乘以由多个天线发射的映射符号构成的矢量，其中所得到的矢量与由先前由多个天线发射的符号构成的矩阵正交，并发送正交符号。 根据本发明的方法，由各天线发送的重映射符号和由各个天线先前发送的符号构成具有正交特性的矩阵。 正交特性可用于有效地检测信号。 此外，该方法具有低复杂度的接收算法，并且比常规方法具有显着的性能增益。

公开(公告)号：US09331816B2

公开(公告)日：2016-05-03

申请号：US14707670

申请日：2015-05-08

Applicant: LG Electronics Inc.

Inventor： Dae Won Lee ,  Bong Hoe Kim ,  Young Woo Yun ,  Ki Jun Kim ,  Dong Wook Roh ,  Suk Hyon Yoon ,  Joon Kui Ahn ,  Dong Youn Seo ,  Hak Seong Kim ,  Jung Hoon Lee ,  Eun Sun Kim ,  Sung Duk Choi

IPC: H04W72/04 ,  H04L1/18 ,  H04L1/16 ,  H04L12/801 ,  H04L1/06 ,  H04L5/00 ,  H04W28/04

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04L1/06 ,  H04L1/1671 ,  H04L1/1861 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0055 ,  H04L47/10 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0413

Abstract: A method for transmitting information of resources for use in transmission of ACK/NACK signals in a mobile communication system is disclosed. An example method for receiving ACK/NACK signals in a mobile communication system is also disclosed. When resources for transmission of data and resources for transmission of control information of the data are scheduled through virtual unit resources, the method identifies information of resources for receiving an ACK/NACK signal for transmission data mapped to information of at least one of a virtual unit resource allocated to the transmission data and a virtual unit resource allocated to control information of the transmission data, and receives the ACK/NACK signal for the transmission data through the information of resources for receiving the ACK/NACK signal.

Abstract translation: 公开了一种在移动通信系统中发送用于ACK / NACK信号的传输的资源信息的方法。 还公开了一种用于在移动通信系统中接收ACK / NACK信号的示例方法。 当通过虚拟单元资源调度用于传输数据和资源的控制信息的资源的资源时，该方法识别用于接收映射到虚拟单元中的至少一个的信息的用于发送数据的ACK / NACK信号的资源的信息 分配给发送数据的资源和分配给控制发送数据的信息的虚拟单元资源，并通过用于接收ACK / NACK信号的资源信息，接收发送数据的ACK / NACK信号。

公开(公告)号：US20160119173A1

公开(公告)日：2016-04-28

申请号：US14987316

申请日：2016-01-04

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Sudhir Srinivasa ,  Hyukjoon Kwon ,  Raja Banerjea

IPC: H04L27/26 ,  H04B7/06

CPC classification number: H04L27/2646 ,  H04B7/0617 ,  H04B7/066 ,  H04L1/06 ,  H04L1/0618 ,  H04L1/0693 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W24/10

Abstract: Channel data for a plurality of OFDM tones for one or more spatial or space-time streams are determined. A plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones are determined. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR.

Abstract translation: 确定用于一个或多个空间或时空流的多个OFDM音调的信道数据。 确定与一个或多个空间或时空流相关联的多个角度值以及多个OFDM音调中的一个或多个OFDM音调。 对于一个或多个空间或空间时间流中的每一个，确定与多个OFDM音调中的一个或多个OFDM音调相关联的每音调信噪比（PT-SNR），并且确定平均信噪比 avg-SNR）通过对应于多个OFDM音调中的一个或多个OFDM音调的信噪比（SNR）值求平均值来确定。 生成反馈报告至少包括i）多个角度值，ii）PT-SNR，以及iii）平均SNR。

公开(公告)号：US09319919B2

公开(公告)日：2016-04-19

申请号：US14421763

申请日：2013-08-20

Applicant: LG ELECTRONICS INC.

Inventor： Jinyup Hwang ,  Sangwook Lee ,  Manyoung Jung ,  Yoonoh Yang ,  Suhwan Lim

IPC: H04W24/10 ,  H04L1/06 ,  H04W88/02

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L1/06

Abstract: The present invention relates to a method by which a terminal measures interference in a wireless communication system in which a macro cell and a small-scale cell coexist. The interference measurement method can include a step in which a terminal receives setting information for interference measurement (IM). Here, the setting information for the IM includes at least two settings, each setting is defined in a resource element (RE) unit, the first of the two settings is for measuring interference from other neighboring cells besides the macro and small-scale cells, and the second is for measuring interference from the macro cell. The interference measurement method may further include: measuring interference by using setting information for the IM; and feeding back channel quality obtained by using the measured interference value.

Abstract translation: 本发明涉及一种终端测量宏小区和小规模小区共存的无线通信系统中的干扰的方法。 干扰测量方法可以包括终端接收用于干扰测量（IM）的设置信息的步骤。 这里，IM的设定信息包括至少两个设置，每个设置在资源元素（RE）单元中定义，这两个设置中的第一个设置用于测量除宏小区之外的其他相邻小区的干扰， 第二个是用于测量宏小区的干扰。 干扰测量方法还可以包括：通过使用IM的设置信息来测量干扰; 并反馈通过使用测量的干扰值获得的信道质量。

公开(公告)号：US09319173B2

公开(公告)日：2016-04-19

申请号：US13444134

申请日：2012-04-11

Applicant: Simone Merlin ,  Albert Van Zelst ,  Maarten Menzo Wentink

Inventor： Simone Merlin ,  Albert Van Zelst ,  Maarten Menzo Wentink

IPC: H04W4/00 ,  H04L1/00 ,  H04L1/06 ,  H04B7/04

CPC classification number: H04L1/0003 ,  H04B7/0452 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/06

Abstract: Link adaptation is supported in a multi-user MIMO environment. In some aspects, a frame including a transmission parameter request (e.g., a null data packet announcement (NDPA) including a modulation and coding scheme (MCS) request (MRQ)) specifies multiple destinations. In some aspects, a decision to transmit a frame specifying multiple destinations is based on whether all of destinations support providing feedback to such a frame. In some aspects, transmission parameter feedback (e.g., MCS feedback (MFB)) including channel estimate information is provided in a case where MFB of type MU is requested.

Abstract translation: 在多用户MIMO环境中支持链路自适应。 在一些方面，包括传输参数请求（例如，包括调制和编码方案（MCS）请求（MRQ）的空数据分组通知（NDPA））的帧指定多个目的地。 在一些方面，发送指定多个目的地的帧的决定基于所有目的地是否支持向这样的帧提供反馈。 在一些方面，在请求类型MU的MFB的情况下提供包括信道估计信息的传输参数反馈（例如，MCS反馈（MFB））。