公开(公告)号：EP4430894A1

公开(公告)日：2024-09-18

申请号：EP23743528.4

申请日：2023-01-20

申请人： Samsung Electronics Co., Ltd.

发明人： JUNG, Geonwoong ,  LEE, Seunghyun ,  LEE, Juho ,  JUNG, Jungsoo

IPC分类号： H04W56/00 ,  H04B7/145

CPC分类号： H04W56/0005

公开(公告)号：EP4422295A1

公开(公告)日：2024-08-28

申请号：EP24151213.6

申请日：2024-01-10

申请人： Airspan IP Holdco LLC

发明人： LOGOTHETIS, Andrew ,  SARAO, Honey Kanwar Singh

IPC分类号： H04W56/00 ,  H04B7/00 ,  H04W76/00 ,  H04W92/00

CPC分类号： H04W56/0005 ,  H04W56/0045 ,  H04W92/00 ,  H04W76/00 ,  H04B7/00 ,  H04W56/0065

摘要： There is provided an apparatus and method, the apparatus comprising an antenna system to communicate with a further antenna system. The apparatus includes computation circuitry to calculate a timing advance, restricted to a predefined range, to be applied by the further antenna system, to modify a transmission time for uplink data corresponding to a sub-frame relative to a reception time for downlink data corresponding to the sub-frame at the further antenna system. The computation circuitry is configured to estimate a round trip time, when the round trip time is within the predefined range, to set the timing advance based on the round trip time, and when the round trip time is outside of the predefined range, to set the timing advance to a value within the predefined range, wherein a difference between the value and the round trip time is based on a duration of one or more sub-frames.

公开(公告)号：EP2699052B1

公开(公告)日：2018-12-05

申请号：EP13192477.1

申请日：2008-04-07

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Sahlin, Henrik ,  Lindgren, Ulf ,  Zangi, Kambiz

IPC分类号： H04W88/08

CPC分类号： H04L5/0037 ,  H04L5/0023 ,  H04W56/0005 ,  H04W88/085 ,  H04W92/10

摘要： Radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based cellular wireless radio transmission system (1), wherein radio access equipment (2) of the system connects to multiple geographically spread radio antennas (3, 4, 5) of a Distributed Antenna System, DAS, for transmitting to and receiving radio signals from user equipment (6, 7, 8, 9, 10). Transmit timings for radio transmission between the user equipment (6, 7, 8, 9, 10) and the antennas (3, 4, 5) of the DAS are established. The radio transmission is scheduled based on the established transmit timings.

公开(公告)号：EP3369285A1

公开(公告)日：2018-09-05

申请号：EP16794448.7

申请日：2016-10-28

申请人： Telefonaktiebolaget LM Ericsson (PUBL)

发明人： SAHLIN, Henrik ,  MUKHERJEE, Amitav

IPC分类号： H04W74/08 ,  H04W74/00 ,  H04W56/00 ,  H04W16/14

CPC分类号： H04W74/0841 ,  H04W16/14 ,  H04W56/0005 ,  H04W56/0045 ,  H04W74/002 ,  H04W74/008

摘要： A contending radio node (200) is configured for attempting contention-based random access. The contending radio node (200) obtains a timing advance sequence that is susceptible to contention. The contending radio node (200) transmits, using the same transmission advancement timing, the timing advance sequence and a contention-resolving identity to a recipient radio node (250). Responsive to that transmission, the contending radio node (200) receives a response signal that indicates a contention-resolving identity and a timing advance. The contending radio node (200) resolves any contention in its favor when the contention-resolving identity indicated by the response signal corresponds to the contention-resolving identity that the contending radio node (200) transmitted. The contending radio node (200), responsive to resolving the contention in its favor, adjusts its transmission advancement timing according to the timing advance indicated by the response signal.

公开(公告)号：EP3354101A1

公开(公告)日：2018-08-01

申请号：EP15771560.8

申请日：2015-09-23

申请人： Sony Mobile Communications Inc.

发明人： LJUNG, Rickard

IPC分类号： H04W74/08

CPC分类号： H04W74/0808 ,  H04B17/318 ,  H04W16/14 ,  H04W56/0005 ,  H04W74/004 ,  H04W74/0816

摘要： A base station of a cellular radio communications network configured to operate in an unlicensed radio band, comprising a radio transceiver connected to an antenna, and a controller including a processor and a memory holding computer program code. The processor is configured to execute the computer program code to realize a machine for determining a size for a contention window, within which the base station may transmit data from the transceiver to a radio terminal operating in the network; receiving a signal from the terminal, comprising an indication of occupancy of a radio channel, as detected by the terminal; adjusting the contention window size dependent on the indication of occupancy of the radio channel; transmitting data to the terminal within the adjusted contention window.

公开(公告)号：EP3337255A4

公开(公告)日：2018-07-25

申请号：EP16843686

申请日：2016-09-09

申请人： HUAWEI TECH CO LTD

发明人： HUANG YADA ,  ZHANG JIAN ,  ZENG QINGHAI

IPC分类号： H04W88/06 ,  H04W68/00 ,  H04W88/10 ,  H04W92/02

CPC分类号： H04W28/0205 ,  H04W28/18 ,  H04W28/26 ,  H04W56/0005 ,  H04W68/00 ,  H04W72/0406 ,  H04W88/06 ,  H04W88/10 ,  H04W92/02

摘要： The present invention provides a wireless communication method, so as to reduce costs and meet a personalized requirement for an air interface in time. The method is performed in a communication system using at least two air interfaces, and configuration information of the at least two air interfaces is different. The at least two air interfaces include a common air interface and at least one dedicated air interface. Configuration information of the common air interface is preconfigured in a network device and a terminal device. The method includes: receiving, by the terminal device, configuration information of a target dedicated air interface and indication information of a target transmission resource from the network device through the common air interface, where the target transmission resource is a transmission resource used by the target dedicated air interface; and performing, by the terminal device, wireless communication with the network device by using the target dedicated air interface and the target transmission resource.

公开(公告)号：EP2472755B1

公开(公告)日：2018-06-13

申请号：EP12161259.2

申请日：2010-03-02

申请人： QUALCOMM Incorporated

发明人： Gaal, Peter ,  Palanki, Ravi ,  Ji, Tingfang

IPC分类号： H04J3/06 ,  H04W56/00

CPC分类号： H04W56/0045 ,  H04W56/0005

摘要： Techniques for adjusting transmit timing of base stations and user equipments (UEs) in a wireless network are described. In one operating scenario, a femto base station communicates with a femto UE, and a macro base station communicates with a macro UE located within the coverage of the femto base station. In an aspect, the transmit timing of the femto base station may be delayed relative to the transmit timing of the macro base station, e.g., to time align downlink signals from the femto and macro base stations at the femto and macro UEs. In another aspect, the transmit timing of the femto UE may be advanced relative to the transmit timing of femto base station by an amount larger than twice the propagation delay between the femto UE and the femto base station, e.g., to time align uplink signals from the femto and macro UEs at the femto base station.

公开(公告)号：EP3189696B1

公开(公告)日：2018-06-06

申请号：EP14758151.6

申请日：2014-09-02

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： LANGEREIS, Alexander

IPC分类号： H04W56/00

CPC分类号： H04W56/0005 ,  H04W56/0045 ,  H04W72/0413

摘要： A method of operation of a base station in a cellular communications network, in which user equipment devices in a cell served by the base station need to be synchronized with the cell on the uplink in order to transmit data, and in which Radio Resource Control, RRC, connected user equipment devices can be kept synchronized with the cell on the uplink or not synchronized. The method comprises making a determination as to whether a specified condition within the cell served by the base station is fulfilled, and, in response to the determination as to whether the specified condition within the cell is fulfilled, determining whether RRC connected user equipment devices should be kept uplink synchronized with the cell, or whether RRC connected user equipment devices should be allowed to become not synchronized on the uplink. Signals are transmitted to user equipment devices to affect whether or not the RRC connected user equipment devices are kept uplink synchronized with the cell, in response to determining whether RRC connected user equipment devices should be kept uplink synchronized with the cell, or whether RRC connected user equipment devices should be allowed to become not synchronized on the uplink.

公开(公告)号：EP3086492B1

公开(公告)日：2018-05-02

申请号：EP14872429.7

申请日：2014-08-14

申请人： Solid, Inc.

发明人： KIM, Cheong Hwan ,  KIM, Hyun Chae

IPC分类号： H04J11/00 ,  H04L27/26

CPC分类号： H04W56/0035 ,  H04B7/155 ,  H04J11/0069 ,  H04J2211/005 ,  H04L5/0007 ,  H04L27/2628 ,  H04W56/0005

摘要： There is provided a device for detecting LTE frame synchronization, including: a CP correlator calculating a correlation of a cyclic prefix (CP) included in each orthogonal frequency division multiplexing (OFDM) symbol of an LTE signal processed digital conversion; a frequency offset compensation unit compensating a frequency offset for a synchronization signal in the LTE signal by using a symbol frequency offset calculated based on the CP correlation; a synchronization signal correlation calculation unit performing a correlation calculation in a time domain with respect to the synchronization signal, of which the frequency offset is compensated, by considering a symbol start timing obtained based on the CP correlation; and a frame synchronization detection unit detecting the frame synchronization of the LTE signal based on a result of the correlation calculation for the synchronization signal.

公开(公告)号：EP3310107A1

公开(公告)日：2018-04-18

申请号：EP15898497.1

申请日：2015-07-17

申请人： Huawei Technologies Co., Ltd.

发明人： ZHOU, Kaijie ,  DENG, Tianle ,  WANG, Xinzheng ,  HU, Xingxing

IPC分类号： H04W72/04 ,  H04W48/16

CPC分类号： H04W72/04 ,  H04L27/2605 ,  H04W48/16 ,  H04W56/0005 ,  Y02D70/122 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21

摘要： The present invention provides an uplink data packet transmission method, a terminal device, and a base station. The method includes: determining, by a terminal device, a CP length of a first uplink data frame; if the terminal device is in a state of out of uplink synchronization with a base station and in an RRC connected state, or is in an RRC idle state, generating, by the terminal device, the first uplink data frame for an uplink data packet according to the CP length, where the CP length of the first uplink data frame is greater than a CP length of an uplink data frame sent by a terminal device that is in a state of uplink synchronization and in an RRC connected state; and sending, by the terminal device, the first uplink data frame to the base station. According to the transmission method in the present invention, signaling procedures such as random access and uplink synchronization can be omitted, so that the terminal device can directly send the uplink data packet by performing signaling exchange once. This improves resource utilization, and reduces power consumption.

摘要翻译： 本发明提供了一种上行数据包传输方法，终端设备和基站。 该方法包括：终端设备确定第一上行数据帧的CP长度; 如果所述终端设备处于与基站上行同步失效的状态，处于RRC连接状态或处于RRC空闲状态，则所述终端设备根据所述终端设备生成的上行数据包的第一上行数据帧， 所述第一上行数据帧的CP长度大于处于上行同步状态且处于RRC连接状态的终端设备发送的上行数据帧的CP长度; 所述终端设备将所述第一上行数据帧发送给所述基站。 根据本发明的传输方法，可以省略随机接入，上行同步等信令流程，使得终端设备可以通过一次信令交换直接发送上行数据包。 这提高了资源利用率并降低了功耗。