公开(公告)号：EP4430809A1

公开(公告)日：2024-09-18

申请号：EP21966006.5

申请日：2021-12-01

申请人： Huawei Technologies Co., Ltd.

发明人： FERDINAND, Nuwan Suresh ,  HUANG, Huang

IPC分类号： H04L27/26 ,  H04W72/04

CPC分类号： H04L25/03834 ,  H04L27/26132 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2647 ,  H04L27/26134 ,  H04L5/0051 ,  H04L5/0091

公开(公告)号：EP4423986A1

公开(公告)日：2024-09-04

申请号：EP22793963.4

申请日：2022-09-28

申请人： QUALCOMM INCORPORATED

发明人： JIANG, Jing ,  GAAL, Peter ,  SMEE, John Edward ,  KULKARNI, Pushkar Bajirao ,  SANKAR, Hari ,  KIM, Sanghoon ,  PARK, Seyong

IPC分类号： H04L27/26

CPC分类号： H04L27/2614 ,  H04L27/2623

公开(公告)号：EP3232590B1

公开(公告)日：2018-12-05

申请号：EP17174756.1

申请日：2012-04-18

申请人： Sun Patent Trust

发明人： MURAKAMI, Yutaka ,  KIMURA, Tomohiro ,  OUCHI, Mikihiro

IPC分类号： H04J99/00 ,  H04B7/04 ,  H04J11/00 ,  H04L25/03 ,  H04L27/34 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04B7/15542 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0604 ,  H04L5/0023 ,  H04L25/03171 ,  H04L25/0391 ,  H04L25/03949 ,  H04L27/2614 ,  H04L27/34 ,  H04W4/06 ,  H04W40/22

摘要： Disclosed is a relay method including: receiving, as input, respective reception signals by two receive antennas, the reception signals each including a reception signal resulting from multiplexing respective transmission signals transmitted by two transmission antennas in a first frequency band; performing frequency conversion on the reception signal received by one of the receive antennas so as to obtain a signal of a third frequency band; and performing frequency multiplexing on the signal having the third frequency band and the reception signal received by the other of the receive antennas.

公开(公告)号：EP3200344B1

公开(公告)日：2018-12-05

申请号：EP17153402.7

申请日：2017-01-26

申请人： MediaTek Inc.

发明人： Tseng, Po-Sen ,  Chang, Wei-Kai ,  Liao, I-No ,  Shiu, Tzyuan ,  Chen, Hsin-Hung ,  Wang, Caiyi

IPC分类号： H03F1/02 ,  H03F1/32 ,  H03F3/189 ,  H03F3/24

CPC分类号： H03F1/3247 ,  H03F1/0222 ,  H03F1/025 ,  H03F1/0255 ,  H03F1/3282 ,  H03F3/189 ,  H03F3/245 ,  H04B1/04 ,  H04B2001/0425 ,  H04L27/2614 ,  H04W52/365

摘要： According to at least one aspect, a communication system is provided. The communication system includes a power amplifier configured to amplify an input signal to generate an amplified output signal and provide the amplified output signal to an antenna, a power supply coupled to the power amplifier and configured to provide power to the power amplifier based on a power supply control signal, and a controller coupled to the power supply. The controller is configured to identify a target transmit power level for transmission of a wireless signal, generate the power supply control signal based on the target transmit power level using information indicative of a relationship between the target transmit power level and a setting of the power supply, generate performance information indicative of a characteristic of the communication system when the wireless signal is transmitted, and update the information indicative of the relationship using the performance information.

公开(公告)号：EP1681821B1

公开(公告)日：2018-11-14

申请号：EP06000748.1

申请日：2006-01-13

申请人： Samsung Electronics Co., Ltd.

发明人： Jung, Young-Ho, c/o Samsung Elec. Co., Ltd. ,  Chung, Jae-Hak, c/o Samsung Elec. Co., Ltd. ,  Nam, Seung-Hoon, c/o SamsungCo., Ltd.

IPC分类号： H04L27/26 ,  H04L5/00 ,  H04L1/06

CPC分类号： H04L1/0618 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2656 ,  H04L27/2657

摘要： In an orthogonal frequency division multiplexing (OFDM) communication system using multiple transmit antennas, a first base sequence with a first length is segmented into a first number of second sequences to which different time offsets are applied. Subsequences of a first preamble sequence corresponding to the number of second sequences are generated. A second base sequence with a second length is segmented into a second number of third sequences to which different time offsets are applied. Subsequences of a second preamble sequence corresponding to the number of third sequences are generated. A subsequence is selected from the subsequences of the first preamble sequence and is transmitted through a transmit antenna in a first time interval. A third preset number of subsequences are selected from the subsequences of the second preamble sequence, and are mapped and transmitted to the transmit antennas in a second time interval.

公开(公告)号：EP2246990B1

公开(公告)日：2018-09-26

申请号：EP10172049.8

申请日：2004-11-30

申请人： Qualcomm Incorporated

发明人： Montojo, Juan ,  Bhushan, Naga ,  Black, Peter J.

IPC分类号： H04B7/005 ,  H04L27/26 ,  H04L27/36 ,  H04L5/00 ,  H04W52/28 ,  H04W52/30 ,  H04W52/34 ,  H04W52/52

CPC分类号： H04W52/343 ,  H04L5/0044 ,  H04L27/2614 ,  H04L27/2637 ,  H04W52/281 ,  H04W52/30 ,  H04W52/346 ,  H04W52/52

摘要： In a multi-carrier access terminal having a transmitter with a single power amplifier, maximum transmission power available for a multi-carrier signal transmitted by the terminal is apportioned among a plurality of carriers on a priority basis. Following apportionment, the carriers are combined into a multi-carrier signal, amplified by the power amplified and transmitted.

公开(公告)号：EP2388914B1

公开(公告)日：2018-08-08

申请号：EP11166623.6

申请日：2011-05-18

申请人： BlackBerry Limited

发明人： Chan, Wen-Yen ,  Khan, Nasserullah ,  Jin, Xin ,  Jiao, Qingzhing

IPC分类号： H03G3/20 ,  H03G3/30 ,  H03F1/02 ,  H03F3/24 ,  H04B1/04 ,  H04L1/18 ,  H04L27/26

CPC分类号： H03G3/20 ,  H03F1/02 ,  H03F3/24 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/045 ,  H04L1/1867 ,  H04L27/2614

摘要： A transmitter for a mobile device utilizes at least one mapper in order to improve power efficiency while still meeting out of band spurious emissions and waveform quality requirements. An encoder and modulator generates an encoded and modulated transmit signal from an input signal. A digital to analog converter coupled to the encoder and modulator generates an analog representation of the encoded and modulated transmit signal. An amplifier stage coupled to the digital to analog converter amplifies the analog representation of the encoded and modulated transmit signal to generate a transmission signal. The transmitter further comprises an amplifier control block configured to generate an amplifier control signal for adjusting at least one parameter of the amplifier stage. At least one mapper is provided in the amplifier control block, used to determine the amplifier control signal based on a peak to average power ratio and an average transmit power of the transmission signal. Environmental and operating conditions of the transmitter may be accounted for as well in the mappers.

公开(公告)号：EP3328133A1

公开(公告)日：2018-05-30

申请号：EP18152669.0

申请日：2015-03-13

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Zhao, Zhenshan ,  Sorrentino, Stefano

IPC分类号： H04W52/32 ,  H04W52/38 ,  H04W56/00 ,  H04W84/18 ,  H04L27/26 ,  H04W92/18 ,  H04W52/36 ,  H04W4/70

CPC分类号： H04W52/383 ,  H04L5/0048 ,  H04L27/2614 ,  H04W4/70 ,  H04W52/322 ,  H04W52/36 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/002

摘要： A method and system for setting a power of a secondary device-to-device synchronization signal, SD2DSS, by a first wireless device to enable a second wireless device to synchronize timing of the second wireless device to a timing of the first wireless device are disclosed. According to one aspect, a method includes determining power of a first signal transmitted by the first wireless device, and setting the power of the SD2DSS based on the power of the first signal.

公开(公告)号：EP3094057B1

公开(公告)日：2018-05-30

申请号：EP14882347.9

申请日：2014-02-14

申请人： Huawei Technologies Co., Ltd.

发明人： ZHU, Jun ,  ZHANG, Jiayin ,  LIU, Yalin

IPC分类号： H04L27/26 ,  H04W52/50 ,  H04L5/00 ,  H04B7/04 ,  H04W84/12

CPC分类号： H04L27/2656 ,  H04B7/0426 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2614 ,  H04W52/50 ,  H04W84/12

摘要： Embodiments of the present invention provide a data transmission method and apparatus, which can improve an overall throughput rate of a system, so that user experience is enhanced. The method includes: performing, by a transmit end, transmit power enhancement processing on a target field of a preamble in a wireless local area network WLAN system, where the target field includes one or more fields, except a non-legacy signal field, in a non-legacy field of the preamble in the WLAN system; and sending, by the transmit end, a receive end the preamble on which transmit power enhancement processing has been performed. In the embodiments of the present invention, transmit power enhancement processing is performed on a non-legacy field of a preamble in a wireless local area network WLAN system, which can improve an overall throughput rate c1f the system, so that data transmission performance and user experience can be enhanced.

公开(公告)号：EP3295636A4

公开(公告)日：2018-05-23

申请号：EP16829872

申请日：2016-07-28

申请人： HUAWEI TECH CO LTD

发明人： SHIH HUEI YUAN

IPC分类号： H04L27/26 ,  H03F1/32 ,  H03H17/02

CPC分类号： H04L27/2623 ,  H03H17/0223 ,  H03H2017/0232 ,  H03H2017/0692 ,  H04B1/0475 ,  H04L27/2614 ,  H04L27/2624

摘要： The present disclosure describes methods, systems, and computer program products for a reducing crest factors. An input signal is received. The input signal includes a clipping signal that reduces a peak amplitude of a source signal based on a predetermined clipping level. The input signal is transposed to a plurality of transposed signals using a plurality of multipliers. A feedback signal is generated based on the plurality of transposed signals using a first plurality of delay taps. A windowing signal is generated based on the feedback signal. The windowing signal is used to reduce a crest factor of the source signal.