公开(公告)号：US20190238193A1

公开(公告)日：2019-08-01

申请号：US16380485

申请日：2019-04-10

Applicant: Apple Inc.

Inventor： Hyung-Nam Choi

IPC: H04B7/0413 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04B7/0413 ,  H04B7/04 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0064 ,  H04L5/0092 ,  H04W72/0446 ,  H04W72/0453 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/444

Abstract: Methods and apparatus adapted to address asymmetric conditions in a multi-antenna system. In one embodiment, the multi-antenna system comprises a wireless (e.g., 3G cellular) multiple-input, multiple-output (MIMO) system, and the methods and apparatus efficiently utilize transmitter and receiver resources based at least in part on a detected asymmetric condition. If an asymmetric condition is detected by the transmitter on any given data stream, the transmitter can decide to utilize only a subset of the available resources for that stream. Accordingly, the signal processing resources for that data stream are adapted to mirror the reduction in resources that are necessary for transmission. The transmitter signals the receiver that it will only be using a subset of the resources available, and the receiver adapts its operation according to the signaling data it receives. The multi-antenna system can therefore reduce power consumption as well as increasing spectral efficiency on the network.

公开(公告)号：US20190215051A1

公开(公告)日：2019-07-11

申请号：US16299391

申请日：2019-03-12

Applicant: Sun Patent Trust

Inventor： Mikihiro OUCHI ,  Yutaka MURAKAMI ,  Tomohiro KIMURA

IPC: H04B7/10 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/0456 ,  H04W52/02 ,  H01Q21/24 ,  H04B1/06

CPC classification number: H04B7/10 ,  H01Q21/24 ,  H04B1/06 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0665 ,  H04B7/0689 ,  H04B10/532 ,  H04L5/0048 ,  H04L5/0053 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/168 ,  Y02D70/442 ,  Y02D70/444

Abstract: Provided is control information related to polarizations of antennas for MISO communication. The control signal generator generates polarization information indicating whether antennas used for transmission by MISO have only a first polarization or have a second polarization as well as the first polarization. With this structure, the present invention allows for the use of combinations of SISO, MISO and MIMO, taking the polarization of antennas. Furthermore, the present invention enables the receiver to reduce the power consumption.

公开(公告)号：US20180213482A1

公开(公告)日：2018-07-26

申请号：US15745999

申请日：2016-06-02

Applicant: Intel IP Corporation

Inventor： Sven DORTMUND ,  Mathias KURTH ,  Matthias HOFMANN ,  Sabine ROESSEL

IPC: H04W52/02 ,  H04W52/28 ,  H04W64/00 ,  H04W76/28 ,  H04W24/10

CPC classification number: H04W52/0251 ,  H04B7/0626 ,  H04W24/10 ,  H04W52/282 ,  H04W64/006 ,  H04W76/28 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

Abstract: This disclosure relates to a method for reducing power consumption of a first device for use in a wireless communication system. The first device receives a signal within a first reference sub-frame of a radio channel. The device determines whether to use the signal for obtaining channel state information to be reported to a second device within a reporting sub-frame, or whether to receive and use a second signal within a second reference sub-frame of the radio channel for obtaining channel state information to be reported to the second device within said predetermined later sub-frame. Based on this determination, the first device reports channel state information obtained based on the signal received within said first reference sub-frame or said second signal within said second reference sub-frame to the second device within said reporting sub-frame.

公开(公告)号：US20180213476A1

公开(公告)日：2018-07-26

申请号：US15326899

申请日：2016-10-19

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Andreas NILSSON ,  Fredrik ATHLEY ,  Sven PETERSSON

IPC: H04W52/02 ,  H04W72/08 ,  H04W72/02

CPC classification number: H04W52/0216 ,  H04B7/0802 ,  H04B7/0877 ,  H04W4/38 ,  H04W52/0219 ,  H04W52/0229 ,  H04W72/02 ,  H04W72/0446 ,  H04W72/085 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/20 ,  Y02D70/24 ,  Y02D70/444

Abstract: A multi-antenna wireless device is equipped with a plurality of selectively operable radio chains. In an active mode or during a listening period of an energy-saving mode, the wireless device measures a quality characteristic of a signal, which it receives from a network node. During a non-listening period of the energy-saving mode, the wireless deactivates all of the radio chains. After the non-listening period, the wireless device activates a selected subset of the radio chains to receive a signal from the network node in a first listening period. The selected subset is determined on the basis of the measured quality characteristic.

公开(公告)号：US10020862B2

公开(公告)日：2018-07-10

申请号：US14871794

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Xiaowen Wang ,  Vinay R. Majjigi ,  Joonsuk Kim ,  Syed Aon Mujtaba

IPC: H04B7/08 ,  H04B17/12 ,  H04B17/318 ,  H04B7/0413

CPC classification number: H04B7/0817 ,  H04B7/0413 ,  H04B7/0877 ,  H04B17/12 ,  H04B17/318 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/26 ,  Y02D70/444

Abstract: Wireless communication devices with multiple receive (RX) chains may be operated to maintain high performance while saving power. This may be accomplished by evaluating signal strength during transmission of the RX packets, and/or evaluating a possible imbalance (gain difference) between the multiple RX chains within the wireless communication device. Signal strength (or good signal) detection may be enabled when non-MIMO (non-multiple-in-multiple-out) transmissions are taking place, while imbalance detection (antenna gain comparison) may be enabled when a specified number of single-stream packets have been received. Once the decision has been made to operate in a reduced number RX path mode, decision to reactivate one or more additional RX paths may be made based on MIMO detection, a detection of a drop in signal quality, and/or upon expiration of a power save timer.

公开(公告)号：US10009452B2

公开(公告)日：2018-06-26

申请号：US15335612

申请日：2016-10-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Junhyung Kim ,  Deepraj Prabhakar Patkar ,  Dusan Baek ,  Dongkeon Kong ,  Bonhyun Koo

IPC: H04B5/00 ,  H04W4/02 ,  H04M1/725 ,  H01Q1/24 ,  H04W4/00 ,  H04W52/02

CPC classification number: H04M1/72533 ,  G07C9/00174 ,  G07C9/00309 ,  G07C2209/63 ,  H01Q1/243 ,  H04B7/0602 ,  H04B7/0802 ,  H04M1/7253 ,  H04M1/72569 ,  H04W4/025 ,  H04W4/80 ,  H04W52/0254 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/166 ,  Y02D70/21 ,  Y02D70/26 ,  Y02D70/444

Abstract: An electronic device, a related mobile device, and control methods thereof are provided. The electronic device includes a transceiver, a switch unit including switching circuitry, and a controller. The transceiver includes a first antenna having first directionality toward a first directional area, a second antenna having second directionality toward a second directional area, and a third antenna having omni-directionality in all directions. The switching circuitry selectively activates or deactivates each antenna. The controller controls the switching circuitry to deactivate the third antenna and activate the second antenna when a first event occurs in connection with a mobile device located in the first directional area during omnidirectional communication through the third antenna.

公开(公告)号：US20180132252A1

公开(公告)日：2018-05-10

申请号：US15664499

申请日：2017-07-31

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Junyi Li ,  Juergen Cezanne ,  Navid Abedini ,  Bilal Sadiq ,  Tao Luo ,  Ashwin Sampath

IPC: H04W72/08 ,  H04W72/04

CPC classification number: H04W72/085 ,  H04B7/0617 ,  H04W16/28 ,  H04W36/06 ,  H04W36/32 ,  H04W52/0216 ,  H04W72/046 ,  H04W72/048 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/20 ,  Y02D70/24 ,  Y02D70/444

Abstract: Techniques are described for wireless communication. One method includes exchanging one or more signals between a first wireless node and a second wireless node and determining, at the first wireless node and based at least in part on the one or more signals, a range of correspondence between at least one of a transmit beam of the first wireless node and a receive beam of the first wireless node.

公开(公告)号：US09954710B2

公开(公告)日：2018-04-24

申请号：US15419088

申请日：2017-01-30

Applicant: Sony Deutschland GmbH

Inventor： Seiichi Izumi

IPC: H04L27/26 ,  H04W52/02 ,  H04L25/02

CPC classification number: H04L27/263 ,  H04B1/0475 ,  H04B1/0483 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0626 ,  H04B7/066 ,  H04B7/0697 ,  H04B7/0842 ,  H04B7/0857 ,  H04L1/0001 ,  H04L1/06 ,  H04L5/0003 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0058 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L27/2628 ,  H04L27/2647 ,  H04W52/02 ,  Y02D70/00 ,  Y02D70/40 ,  Y02D70/444

Abstract: A communication device for transmitting orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements that transmit the OFDM signals to a receiver over a plurality of transmission channels in the wireless communication system. The device also generates weight coefficients applied to each of the plurality of subcarrier signals, and controls an amplitude and/or phase of the plurality of subcarrier signals as a function of said weight coefficients.

公开(公告)号：US09949243B2

公开(公告)日：2018-04-17

申请号：US13993023

申请日：2012-06-27

Applicant: Maruti Gupta ,  Ali Taha Koc ,  Rath Vannithamby

Inventor： Maruti Gupta ,  Ali Taha Koc ,  Rath Vannithamby

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/08 ,  H04W88/06 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04B15/00 ,  H04W8/02 ,  H04W24/00 ,  H04W52/24 ,  H04W52/02 ,  H04L5/00 ,  H04L27/34 ,  H04L5/14 ,  H04W4/00 ,  H04W72/02 ,  H04W76/02 ,  H04W52/14 ,  H04W24/08 ,  H04W76/04 ,  H04L27/36 ,  H04W52/32 ,  H04W84/04

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: Embodiments of user equipment (UE) and methods for application-agnostic discontinuous reception (DRX) triggering are generally described herein. In some embodiments, a UE is configured to monitor buffer status history and traffic activity history, and trigger DRX mode activation based on the buffer status and the traffic activity history. In some embodiments, the UE may determine a probability, based on the buffer status history and the traffic activity history, that a level of traffic activity that cannot be handled during DRX mode would occur. In these embodiments, the UE may trigger DRX mode activation when the probability is below a threshold.

公开(公告)号：US09907017B2

公开(公告)日：2018-02-27

申请号：US14520010

申请日：2014-10-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sung Ho Chae ,  Nam Jeong Lee ,  Jong Bu Lim ,  Jong Ho Bang ,  Kyung Hun Jang

IPC: H04B1/44 ,  H04W52/02 ,  H04B7/08 ,  H04B1/10 ,  H04L5/14

CPC classification number: H04W52/0209 ,  H04B1/1009 ,  H04B7/0825 ,  H04L5/14 ,  H04L5/1461 ,  Y02D70/164 ,  Y02D70/40 ,  Y02D70/444

Abstract: A communication method and apparatus for cancelling interference are provided. The communication apparatus includes an active element configured to receive a first signal and a parasitic element configured to receive a second signal. A third signal is generated by cancelling interference in the first signal using the second signal.