公开(公告)号：US09787610B2

公开(公告)日：2017-10-10

申请号：US14954690

申请日：2015-11-30

Applicant: AeroVironment, Inc.

Inventor： Rolland Mitchell Koch ,  William Stuart Sechrist ,  Daniel Bailey Hiranandani

IPC: H04L12/26 ,  H04L12/939 ,  H04L1/02 ,  H04L1/08 ,  H04L29/08 ,  H04L29/06 ,  H04L12/707

CPC classification number: H04L49/552 ,  H04L1/02 ,  H04L1/08 ,  H04L43/0835 ,  H04L43/106 ,  H04L43/16 ,  H04L45/24 ,  H04L67/12 ,  H04L69/14 ,  H04L69/32

Abstract: A receiving network node (210) configured to select from received packets differing by time of initial transmission from a sending network node (230), and accepting for transmission, based on initial transmission time, the selected packets to an application layer (740). An internetworked processor node configured to: (a) read a sequence number and an originator identifier of a received packet message (810); (b) compare a stored highest sequence number associated with the originator identifier with the received packet sequence number (820); (c) if the received packet sequence number is less than or equal to the stored highest sequence number associated with the originator identifier, then discard (840) the received packet; and (d) if the received packet sequence number is greater than the stored highest sequence number associated with the originator identifier, then deliver (860) the message of the received packet to an application based on an upper layer protocol.

公开(公告)号：US20170279515A1

公开(公告)日：2017-09-28

申请号：US15620041

申请日：2017-06-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yiqun Wu ,  Shunqing Zhang ,  Yan Chen

IPC: H04B7/06 ,  H04B7/0456 ,  H04L1/02

CPC classification number: H04B7/0689 ,  H04B7/0456 ,  H04L1/02

Abstract: A data processing method, including performing, by a transmit end device, mapping processing on L layers of information bits to generate L layers of modulation symbol sequences, where each layer of modulation symbol sequence includes U modulation symbols, the L layers of modulation symbol sequences correspond to a same time-frequency resource, and the U modulation symbols include at least one non-zero modulation symbol and at least one zero modulation symbol, performing precoding processing on each layer of modulation symbol sequence according to a precoding matrix to generate L layers of modulation symbol sequence matrixes, and performing superposition processing on the L layers of modulation symbol sequence matrixes to generate a to-be-sent symbol sequence matrix, where the to-be-sent symbol sequence matrix includes T element sequences in a first dimension, and the to-be-sent symbol sequence matrix includes U element sequences in a second dimension.

公开(公告)号：US09755807B2

公开(公告)日：2017-09-05

申请号：US14754033

申请日：2015-06-29

Applicant: QUALCOMM Incorporated

Inventor： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Hao Xu

IPC: H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04B7/0413 ,  H04B7/06 ,  H04W52/32 ,  H04W72/04 ,  H04L1/02 ,  H04L1/06 ,  H04L5/02

CPC classification number: H04L5/0057 ,  H04B7/0413 ,  H04B7/0632 ,  H04B2201/70701 ,  H04L1/0002 ,  H04L1/02 ,  H04L1/06 ,  H04L5/023 ,  H04L25/0224 ,  H04L25/023 ,  H04L27/261 ,  H04W52/325 ,  H04W72/042

Abstract: Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A Node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.

公开(公告)号：US09716567B2

公开(公告)日：2017-07-25

申请号：US12448224

申请日：2006-12-14

Applicant: Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

Inventor： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

IPC: H04B7/02 ,  H04L1/02 ,  H04L1/00 ,  H04L1/18 ,  H04L1/06 ,  H04L1/16

CPC classification number: H04L1/0003 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/0656 ,  H04L1/1671 ,  H04L1/1848

Abstract: A method and apparatus for improving performance in communication systems is provided. In one implementation, initial encoded data that has been encoded with a rateless code is received. A quality metric is determined for a communication medium on which the initial encoded data has been received. A modulation scheme used in sending the initial encoded data on the communication medium is identified. An estimate is determined, based on the identified modulation scheme and the determined quality metric, of an amount of mutual information being received per unit of received encoded data. An amount of mutual information being received is determined, based on the determined estimate.

公开(公告)号：US09680512B2

公开(公告)日：2017-06-13

申请号：US13940238

申请日：2013-07-11

Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.

Inventor： Jun Chen ,  Song He

IPC: H04B7/02 ,  H04L1/02 ,  H04B1/12 ,  H04J11/00 ,  H04J13/00 ,  H04W4/00 ,  H04B7/10 ,  H04B1/7093

CPC classification number: H04B1/12 ,  H04B1/7093 ,  H04B7/10 ,  H04J11/00 ,  H04J11/0023 ,  H04J13/004 ,  H04W4/80

Abstract: A message retrieving system and method for signal collision mitigation and the method thereof are disclosed. The message retrieving system transmits two orthogonal signals over two isolated antenna during a time period that it expects to receive the response. Two virtual channels are artificially created and the collision of response signals originated from the respondents is mitigated.

公开(公告)号：US09647735B2

公开(公告)日：2017-05-09

申请号：US14784256

申请日：2013-12-12

Applicant: INTEL IP CORPORATION

Inventor： Masoud Sajadieh ,  Hooman Shirani-Mehr ,  Feng Xue ,  Qinghua Li

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/04 ,  H04W12/02 ,  H04W48/16 ,  H04W28/02 ,  H04B7/0452 ,  H04L27/20 ,  H04W92/24 ,  H04W4/00 ,  H04W76/02

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04L27/20 ,  H04W4/70 ,  H04W12/02 ,  H04W28/0289 ,  H04W48/16 ,  H04W76/14 ,  H04W92/24

Abstract: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight includes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

公开(公告)号：US09641197B2

公开(公告)日：2017-05-02

申请号：US14755946

申请日：2015-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Seoyoung Back ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/02 ,  H03M13/27 ,  H04L1/00 ,  H04B7/06 ,  H04B7/04 ,  H04L27/26 ,  H04L29/06 ,  H03M13/11 ,  H04B7/0413

CPC classification number: H03M13/2792 ,  H03M13/1102 ,  H04B7/0413 ,  H04B7/046 ,  H04B7/0606 ,  H04L1/0041 ,  H04L1/0042 ,  H04L1/0048 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/0083 ,  H04L1/08 ,  H04L27/2649 ,  H04L65/4076 ,  H04L2001/0093

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; processing, by a framing and interleaving block, the encoded data in the plural PLPs to output at least one signal frame; and waveform modulating, by a waveform generation block, data in the at least one signal frame and transmitting, by the waveform generation block, broadcast signals having the waveform modulated data.

公开(公告)号：US09628973B2

公开(公告)日：2017-04-18

申请号：US14454289

申请日：2014-08-07

Applicant: LG ELECTRONICS INC.

Inventor： Woochan Kim ,  Sungryong Hong ,  Woosuk Ko ,  Jaeho Hwang ,  Byounggill Kim ,  Jaehyung Kim

IPC: H04B7/02 ,  H04L1/02 ,  H04W4/22 ,  H03M13/11 ,  H03M13/27 ,  H04B7/0413 ,  H04L27/26 ,  H04W4/06 ,  H03M13/25 ,  H03M13/29 ,  H03M13/00 ,  H04L12/18 ,  H03M13/09 ,  H03M13/15

CPC classification number: H04W4/90 ,  H03M13/09 ,  H03M13/1165 ,  H03M13/1177 ,  H03M13/152 ,  H03M13/255 ,  H03M13/27 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/6356 ,  H03M13/6362 ,  H04B7/0413 ,  H04L5/0007 ,  H04L12/189 ,  H04L27/2601 ,  H04L27/2627 ,  H04W4/06 ,  H04W52/0229 ,  H04W76/27 ,  Y02D70/00

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes encoding data of PLPs (Physical Layer Pips); building at least one signal frame by mapping the encoded data of the PLPs; and modulating data in the built signal frame by OFDM (Orthogonal Frequency Division Multiplexing) method and transmitting the broadcast signals having the modulated data.

公开(公告)号：US09614708B1

公开(公告)日：2017-04-04

申请号：US14976271

申请日：2015-12-21

Applicant: INTEL IP CORPORATION

Inventor： Ahmed Gamal Helmy Mohamed ,  Thomas J. Kenney ,  Shahrnaz Azizi

IPC: H04L1/02 ,  H04L27/26 ,  H04B7/04

CPC classification number: H04L27/2608 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0604 ,  H04L5/0023 ,  H04L27/2601 ,  H04L27/2627

Abstract: One exemplary embodiment provides an efficient method and architecture that allows the transmission of at least two different data services with different quality of service (QOS) and source encoding for the IEEE 802.11.ax-HEW (and beyond, 802.11ax+) Wi-Fi systems/networks. An exemplary embodiment capitalizes on the behavior of spatial modulation (SM-OFDM) transmission techniques to allow, for example, using different channel encoding rates for each category/service of data.

公开(公告)号：US09614598B2

公开(公告)日：2017-04-04

申请号：US14598893

申请日：2015-01-16

Applicant: Microsoft Technology Licensing, LLC

Inventor： Jun Yuan ,  Hosein Nikopourdeilami ,  Mo-Han Fong

IPC: H04L1/02 ,  H04B7/0452 ,  H04B7/024 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/04 ,  H04L25/03

CPC classification number: H04B7/0452 ,  H04B7/024 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0482 ,  H04B7/0615 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0697 ,  H04L2025/03426

Abstract: Uplink transmission from a mobile device having multiple antennas to a base station having multiple antennas includes transmitting in an open-loop single-user MIMO mode when the mobile device is at high speed, transmitting in a closed-loop single-user MIMO mode when the mobile device is at low speed, and, upon request, transmitting in a multi-user collaborative MIMO mode. The method also includes controlling uplink transmissions in a selected one of the open-loop single-user MIMO, the closed-loop single-user MIMO and the multiuser collaborative MIMO modes. Uplink transmissions from the mobile device may be transmitted using multiple antennas of the mobile device. Upon request, the mobile device may switch to transmitting in multi-user collaborative MIMO mode with a subset of the multiple antennas.