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31. 发明授权

EP0444067B1 COMMUNICATIONS SYSTEM 失效
标题翻译：通信系统
公开(公告)号：EP0444067B1
公开(公告)日：1994-03-30
申请号：EP89912477.0
申请日：1989-11-10
申请人： BRITISH TELECOMMUNICATIONS public limited company
发明人： MOTLEY, Andrew, James , CHADNEY, Anthony, Gerard
IPC分类号： H04Q7/04 , H04B7/26 , H04M1/72
CPC分类号： H04W88/085 , H04B10/25753 , H04W36/18
摘要： A communications system has a base centre with radio transceivers (15) for providing a number of radio frequency (RF) communications links and a plurality of fixed radio ports (1) through which RF signals can be transmitted and received over the air. A fibre optic network (2, 4) interconnects the RF transceivers (15) and the fixed radio ports (1), and carries the RF signals by means of optical signals. There is a plurality of radio/optical interfaces by which RF signals can be modulated onto and demodulated from one or more optical signals, between the RF transceivers and the fibre optic network, and between the fibre optic network and the fixed radio ports. A matrix switch (13) selectively interconnects the transceivers and the radio ports through the fibre optic network.
摘要翻译：一种通信系统具有一个基地中心，该基地中心具有用于提供多个射频（RF）通信链路和多个固定无线端口（1）的无线电收发器（15），RF信号可以通过该固定无线端口（1）在空中发送和接收。光纤网络（2,4）将RF收发器（15）和固定无线电端口（1）互连，并通过光信号传送RF信号。存在多个无线电/光学接口，RF信号可通过所述无线电/光学接口调制到RF收发器和光纤网络之间以及光纤网络和固定无线电端口之间的一个或多个光信号并从中解调。矩阵开关（13）通过光纤网络选择性地将收发器和无线电端口互连。

32. 发明公开

EP0476569A3 Mobile communication system 失效
标题翻译：移动通信系统
公开(公告)号：EP0476569A3
公开(公告)日：1992-07-01
申请号：EP91115697.4
申请日：1991-09-16
申请人： NEC CORPORATION
发明人： Emura, Katsumi, c/o NEC Corporation , Shibutani, Makoto, c/o NEC Corporation , Namiki, Junji, c/o NEC Corporation , Kanai, Toshihito, c/o NEC Corporation
IPC分类号： H04Q7/20 , H04Q7/22 , H04B7/26 , H04B10/12
CPC分类号： H04B10/25753 , H04B10/25752 , H04B10/25759 , H04W88/085
摘要： A mobile communication system using a cellular system in which each of one or more cells is provided with a base radio station, and mobile terminals communicate with the base radio stations. Base radio stations (21, 22 and 23) are connected to a central base station (100) by optical fibers. The central base station is connected to a mobile switching center (50). Each base radio stations is provided with an O/E converter (201) and E/O converter (207). The O/E converter converts a optical signal containing speech signals and a call connection control signal into RF signals. The E/O converter (207) converts RF signals, received from a mobile terminal (11) via an antenna (204), into optical signals and transmitting the optical signals to the central base station. The central base station comprises O/E converters (301-303) for converting optical signals from each base radio station into RF signals; receivers (401-403) for demodulating these RF signals; transmitters (406-408) for converting speech signals and a call connection control signal from the mobile switching center into RF signals; and E/C converters (304-306) for converting these RF signals into optical signals and transmitting the optical signals to a base radio station.

33. 发明公开

EP0346925A3 Private branch radio communication system using optical fibers 失效
标题翻译：使用光纤的私有分支无线电通信系统
公开(公告)号：EP0346925A3
公开(公告)日：1991-08-21
申请号：EP89110993.6
申请日：1989-06-16
申请人： SMALL POWER COMMUNICATION SYSTEMS RESEARCH LABORATORIES CO., LTD.
发明人： Takagi, Tasuku
IPC分类号： H04B10/22 , H04B10/20 , H04B7/00 , H04B7/26
CPC分类号： H04B10/25753 , H04B7/00
摘要： A private branch radio communication system includes a portable radio transmitter (1) and a portable radio receiver (4). The system further includes first and second repeaters (2, 3) respectively located in first and second areas (P1, P2) within a given premises and coupled to each other through an optical fiber cable (5). A radio signal output from the portable radio transmitter (1) is converted into an optical signal by the first repeater (2), and is then supplied to the second repeater (3) through the optical fiber cable (5), and converted into a radio signal which is received by the portable radio receiver (4).

34. 发明授权

EP4142186B1 DISTRIBUTED ANTENNA SYSTEM AND COMMUNICATION SYSTEM 审中-实审
公开(公告)号：EP4142186B1
公开(公告)日：2024-06-05
申请号：EP22170871.2
申请日：2022-04-29
IPC分类号： H04B10/2575
CPC分类号： H04B10/25753

35. 发明公开

EP3376838A1 RADIO REMOTE UNIT AND COMPONENT THEREOF 有权
公开(公告)号：EP3376838A1
公开(公告)日：2018-09-19
申请号：EP16872389.8
申请日：2016-12-07
申请人： Huawei Technologies Co., Ltd.
发明人： SHI, Xiaoming , SHEN, Xiaohui , LIANG, Dan , XIONG, Haigang , TANG, Haizheng
IPC分类号： H05K7/20
CPC分类号： H04B10/25753 , H05K7/20 , H05K7/20145 , H05K7/20163
摘要： The present invention discloses a remote radio apparatus, including: a body, a mainboard, a mainboard heat sink, a maintenance cavity, an optical module, and an optical module heat sink. The maintenance cavity and the optical module heat sink are integrally connected; the optical module is mounted on a bottom surface of the optical module heat sink; the maintenance cavity and the optical module heat sink are mounted on a side surface of the body; and the mainboard heat sink is mounted on and cover the mainboard, the mainboard heat sink and the mainboard are installed on a front surface of the body, and the mainboard heat sink and the optical module heat sink are spaced by a preset distance. According to the RRU provided in the embodiments of the present invention, the optical module heat sink is separated from the mainboard heat sink, so that a heat conductivity path between the optical module heat sink and the mainboard heat sink is extended, a temperature of the optical module heat sink is reduced, and impact on the temperature of the optical module is weakened, thereby controlling the temperature of the optical module within a range required by a specification.

36. 发明公开

EP3355523A1 RELAY TRANSMISSION SYSTEM, RELAY TRANSMISSION METHOD, AND RELAY TRANSMISSION DEVICE 有权
公开(公告)号：EP3355523A1
公开(公告)日：2018-08-01
申请号：EP16859777.1
申请日：2016-10-25
申请人： Nippon Telegraph And Telephone Corporation
发明人： HISANO, Daisuke , SHIMADA, Tatsuya , OU, Hiroshi , KOBAYASHI, Takayuki
IPC分类号： H04L12/44 , H04L12/811
CPC分类号： H04L5/1469 , H04B10/2503 , H04B10/25753 , H04B10/2971 , H04L5/0037 , H04L5/1423 , H04L12/44
摘要： A relay transmission system includes a relay unit configured to relay uplink signals and downlink signals in the first and second communication systems, a time division duplex (TDD) information estimation unit configured to estimate a transmission period of network devices in the first communication system on the basis of the uplink or downlink signal of the first communication system that is relayed by the relay unit, a surplus bandwidth determination unit configured to determine a surplus bandwidth in which an uplink signal of the first communication system is not allocated to a relay target of the relay unit during the transmission period on the basis of the number of network devices and a maximum transmission capacity of the network devices, and a bandwidth allocation unit configured to allocate the uplink signal of the second communication system to the relay target of the relay unit in the surplus bandwidth.

37. 发明公开

EP3342068A1 CONTROL OF AN OPTICAL TRANSMITTER IN A RADIO OVER FIBRE SYSTEM 审中-公开
公开(公告)号：EP3342068A1
公开(公告)日：2018-07-04
申请号：EP15757198.5
申请日：2015-08-24
申请人： Telefonaktiebolaget LM Ericsson (PUBL)
发明人： BRUNO, Gianmarco , NIJHOF, Jeroen , GIORGI, Luca , PONZINI, Filippo
IPC分类号： H04B10/079 , H04B10/2575
CPC分类号： H04B10/25753 , H04B10/0793 , H04B10/07953 , H04B10/50
摘要： A radio over fibre system (5) comprises a base station (10, 20) with a first base station node (10) and a second base station node (20) connected by an optical communication link (30). At least one of the base station nodes (10, 20) comprises an optical transmitter (17, 23). A method of determining an operating parameter for the optical transmitter (17, 23) comprises receiving signal quality parameters for a plurality of user equipments (UE) served by the base station (10, 20). The method determines an operating parameter of the optical transmitter using the determined signal quality parameters of the plurality of user equipments (UE). The operating parameter of the optical transmitter can be a modulation parameter.

38. 发明授权

EP3158824B1 METHOD FOR REDUCING FRONTHAUL LOAD IN CENTRALIZED RADIO ACCESS NETWORKS (C-RAN) 有权
标题翻译：在集中无线接入网络（C-RAN）中降低前向负载的方法
公开(公告)号：EP3158824B1
公开(公告)日：2018-03-21
申请号：EP14748129.5
申请日：2014-06-23
申请人： Telecom Italia S.p.A.
发明人： BOLDI, Mauro , GIANOLA, Paolo , MELIS, Bruno
IPC分类号： H04W88/08 , H03M7/30 , H04B10/2575
CPC分类号： H04W28/08 , H03M7/3059 , H04B10/25753 , H04B10/25758 , H04L27/2601 , H04L27/2602 , H04W88/085
摘要： A method is proposed of arranging, in a mobile communication network, transmission of data between user equipment and at least one base station including a central unit and at least one remote unit associated therewith. The method includes at a transmitting side including the remote unit or the central unit, quantizing the data according to a quantization bit number, and transmitting, over a fronthaul link between the transmitting side and a receiving side including the central unit or the remote unit, respectively, the quantized data to the receiving side. The method further includes, at the central unit: determining the quantization bit number, wherein the determining including varying in time the quantization bit number according to network information available at the central unit, and communicating to the at least one remote unit the determined quantization bit number.

39. 发明公开

EP3289704A1 OPTICAL RECEIVER AND METHOD OF RECEIVING AN OPTICAL COMMUNICATIONS SIGNAL 审中-公开
标题翻译：光学接收器和接收光学通信信号的方法
公开(公告)号：EP3289704A1
公开(公告)日：2018-03-07
申请号：EP15720958.6
申请日：2015-04-30
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： PONZINI, Filippo , DORTSCHY, Boris , URBAN, Patryk , GIORGI, Luca
IPC分类号： H04B10/2575 , H04B10/60
CPC分类号： H04B10/25753 , H04B10/25758 , H04B10/60 , H04J14/0298 , H05K999/99
摘要： An optical receiver (10) comprising: an input (12) arranged to receive a subcarrier multiplexing, SCM, optical signal (14) comprising an optical carrier and an optical subcarrier, each having a respective optical power; a carrier suppression element, CSE, (16) arranged to receive the SCM optical signal and having a rejection band that is tunable in frequency to partially suppress the optical carrier by a variable amount; an optical amplifier (18) having a variable gain and arranged to receive the SCM optical signal from the CSE and amplify the optical carrier and the optical subcarrier; a photoreceiver (20) arranged to receive the SCM optical signal from the amplifier; and a controller (24) arranged to cause frequency tuning of the rejection band and variation of the gain of the optical amplifier to adjust a ratio of the optical power of the optical carrier at the photoreceiver to the optical power of the optical subcarrier at the photoreceiver based on an indication of performance of the SCM optical signal.

40. 发明公开

EP2606571A4 REMOTELY RECONFIGURABLE DISTRIBUTED ANTENNA SYSTEM AND METHODS 审中-公开
公开(公告)号：EP2606571A4
公开(公告)日：2018-01-03
申请号：EP11818695
申请日：2011-08-16
申请人： DALI SYSTEMS CO LTD
发明人： LEMSON PAUL , STAPLETON SHAWN PATRICK , TRAJKOVIC SASA TRAJKO , LEE ALBERT S
IPC分类号： H04L12/64 , H04B7/005 , H04B7/02 , H04B10/2575 , H04L29/08 , H04W64/00 , H04W88/08
CPC分类号： H04L12/6418 , H04B7/022 , H04B10/25753 , H04L67/1002 , H04W64/00 , H04W72/0486 , H04W88/085
摘要： The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load- balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. As a result, the SDR DAS can increase the efficiency and traffic capacity of the operators' wireless network.

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