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    • 3. 发明授权
    • Distributed base station signal transmission system and communication system
    • 分布式基站信号传输系统和通信系统
    • US09479254B2
    • 2016-10-25
    • US14496777
    • 2014-09-25
    • Huawei Technologies Co., Ltd.
    • Xiquan DaiZhenghua Fu
    • H04B10/2575H04B10/25H04J14/02H04B10/27
    • H04B10/25758H04B10/25H04B10/25752H04B10/27H04J14/02H04J14/0246H04J14/025H04J14/0279H04J14/0282H04J2014/0253
    • A distributed base station signal transmission system is provided. The system includes a first multiplexing and demultiplexing unit, which is configured to multiplex a downlink signal emitted by the base band unit and output the downlink signal to the remote radio unit, a second multiplexing and demultiplexing unit, which is configured to multiplex an uplink signal emitted by the remote radio unit and output the uplink signal to the base band unit; a first colorless optical module receives and parse the uplink signal and generate the downlink signal; and a second colorless optical module is configured to receive and parse the downlink signal and generate the uplink signal. The present invention requires only one or a pair of fibers to implement interconnection between BBUs and RRUs, and does not need to use a large number of fibers and a metro wavelength division multiplexing network.
    • 提供分布式基站信号传输系统。 该系统包括:第一复用和解复用单元,被配置为多路复用由基带单元发射的下行链路信号,并将下行链路信号输出到远程无线电单元;第二复用和解复用单元,被配置为复用上行链路信号 由远程无线电单元发射,并将上行链路信号输出到基带单元; 第一个无色光模块接收并解析上行链路信号并产生下行链路信号; 并且第二无色光模块被配置为接收和解析下行链路信号并产生上行链路信号。 本发明仅需要一对或一对光纤来实现BBU和RRU之间的互连,并且不需要使用大量的光纤和城域波分复用网络。
    • 4. 发明申请
    • METHOD AND MONITORING DEVICE FOR DETERMINING EQUALIZATION PARAMETERS, COMPUTER PROGRAM, INFORMATION STORAGE MEANS
    • 用于确定均衡参数的方法和监测装置,计算机程序,信息存储装置
    • US20160248501A1
    • 2016-08-25
    • US15026177
    • 2014-10-07
    • MITSUBISHI ELECTRIC CORPORATION
    • Gwillerm FROCOlivier WEPPE
    • H04B10/079H04B10/2507H04J14/02H04B10/272
    • H04B10/0795H04B10/2507H04B10/272H04J14/0221H04J14/0279H04J14/0282
    • For determining equalization parameters for performing equalization for optical signals transmitted by a first device to a second device via an optical band-pass filter, the second device being configured for receiving optical signals output by said optical band-pass filter and transmitted by the first device on a carrier wavelength when said carrier wavelength is comprised in the passband of the optical band-pass filter, said carrier wavelength and/or said passband of the optical band-pass filter being a priori unknown, a monitoring device performs: determining information representative of a level of detuning between the carrier wavelength of the optical signals and the nominal wavelength of the optical band-pass filter; and determining said equalization parameters, on the basis of said determined information representative of the level of detuning between the carrier wavelength of the optical signals and the nominal wavelength of the optical band-pass filter.
    • 为了确定用于经由光学带通滤波器对由第一装置发送到第二装置的光信号进行均衡的均衡参数,所述第二装置被配置为接收由所述光学带通滤波器输出并由第一装置发射的光信号 当所述载波波长包括在所述光学带通滤波器的通带中时,在所述载波波长上,所述载波波长和/或所述光学带通滤波器的所述通带是先验未知的,监视装置执行:确定表示 光信号的载波波长与光带通滤波器的标称波长之间的失谐程度; 以及基于表示光信号的载波波长和光学带通滤波器的标称波长之间的失谐电平的所述确定的信息来确定所述均衡参数。
    • 7. 发明授权
    • Optical spectrum recovery
    • 光谱恢复
    • US09020350B2
    • 2015-04-28
    • US13168811
    • 2011-06-24
    • Edward T SullivanHal Kauffeldt
    • Edward T SullivanHal Kauffeldt
    • H04J14/02
    • H04J14/0212H04J14/0204H04J14/0205H04J14/021H04J14/0257H04J14/026H04J14/0275H04J14/0279
    • The invention is directed to systems and methods for re-arranging optical spectrum utilization so that unallocated portions of the spectrum may be made contiguous. Rearrangement of optical spectrum is accomplished by moving a channel from its initial spectral location to a targeted spectral location by reserving additional spectrum for that channel that at least includes the targeted spectral location, shifting the channel to the targeted location and then collapsing the reserved spectrum around the targeted location to cover the minimal required spectrum for the channel allocation of the channel. In some cases, a secondary channel can be used as an alternate source to carry user traffic while the first channel is shifted to the targeted location.
    • 本发明涉及用于重新布置光谱利用的系统和方法,使得光谱的未分配部分可以连续。 通过将信道从其初始频谱位置移动到目标频谱位置,通过为该信道预留至少包括目标频谱位置的附加频谱,将频道移动到目标位置,然后将预留频谱折叠起来,来实现光谱的重新布置 目标位置覆盖信道的信道分配所需的最小频谱。 在一些情况下,可以将辅助信道用作备用源以在第一信道被转移到目标位置时携带用户业务。
    • 8. 发明授权
    • Transport of multiple asynchronous data streams using higher order modulation
    • 使用更高阶调制传输多个异步数据流
    • US08909064B2
    • 2014-12-09
    • US14250969
    • 2014-04-11
    • Google Inc.
    • Bikash KoleyVijayanand VusirikalaHong Liu
    • H04B10/04H04J14/06H04Q11/00
    • H04Q11/0005H04B10/5051H04B10/5053H04B10/5161H04B10/541H04B10/5561H04J3/04H04J3/0602H04J3/0685H04J14/0279H04J14/0298H04J14/06H04L27/34H04L27/36H04Q2011/0045H04Q2213/13361
    • Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator.
    • 本发明的各方面提供用于管理多个光信号的发射机和接收机。 高阶调制(例如相位和/或幅度调制)用于通过在光学传输系统中传送多个异步数据流来实现每个符号的多个位。 可以结合高阶调制处理使用一个或多个补充复用技术,例如时分复用,偏振复用和副载波复用。 这可以以各种组合来实现,以实现高频谱效率的多数据流传输机制。 系统接收多个异步信号,这些异步信号是非帧和同步的,然后在高阶调制之前被重构和标记。 还可以执行差分编码。 在接收到复用的光信号时,接收机电路可以采用无本地振荡器的直接检测或与本地振荡器的相干检测。
    • 9. 发明申请
    • Full-Duplex Multi-Mode Fiber Communication
    • 全双工多模光纤通信
    • US20140314425A1
    • 2014-10-23
    • US13864319
    • 2013-04-17
    • CISCO TECHNOLOGY, INC.
    • Luca Cafiero
    • H04B10/27
    • H04B10/2503H04J14/0265H04J14/0279
    • Techniques are presented herein to facilitate higher bandwidth communications in a data center using existing multi-mode fibers and full-duplex optical communication techniques. A first device transmits to a second device a first optical signal at a first wavelength on a first optical fiber. The first optical signal carries a first portion of Ethernet traffic. The first device receives a second optical signal transmitted at a second wavelength on the first optical fiber from the second device. The second optical signal carries a first portion of Ethernet traffic. On a second optical fiber, the first device transmits to the second device a third optical signal at a third wavelength. The third optical signal carries a second portion of Ethernet traffic. The first device receives a fourth optical signal at a fourth wavelength on the second optical fiber, the fourth optical signal carrying a second portion of Ethernet.
    • 本文介绍了技术,以便利用现有的多模光纤和全双工光通信技术来促进数据中心中的更高带宽通信。 第一设备向第二设备发送第一光纤上的第一波长的第一光信号。 第一个光信号携带以太网业务的第一部分。 第一装置从第二装置接收在第一光纤上以第二波长发射的第二光信号。 第二光信号携带以太网业务的第一部分。 在第二光纤上,第一设备向第二设备发送第三波长的第三光信号。 第三光信号携带第二部分以太网业务。 第一装置在第二光纤上接收第四波长的第四光信号,第四光信号承载第二部分以太网。