Efficient mapping of CPRI signals for sending over optical networks

    公开(公告)号:US09647759B2

    公开(公告)日:2017-05-09

    申请号:US14569857

    申请日:2014-12-15

    申请人: IPLight Ltd.

    发明人: Leon Bruckman

    IPC分类号: H04B10/2575 H04L7/00 H04J3/16

    摘要: A method for communication includes receiving in a first communication interface input frames, which include data symbols that were derived by encoding respective characters, and further include one or more synchronization symbols having no corresponding characters. The characters from the data symbols are recovered, and the recovered characters are transmitted to a second communication interface by mapping the characters into communication frames and discarding the synchronization symbols. The characters are extracted from the communication frames in the second communication interface by synchronizing to the input frames independently of the synchronization symbols. The input frames are reconstructed in the second communication interface, including the data symbols and the synchronization symbols, by re-encoding the extracted characters.

    CLOCK RECOVERY IN COMMUNICATION OF HIERARCHICALLY ENCAPSULATED SIGNALS
    2.
    发明申请
    CLOCK RECOVERY IN COMMUNICATION OF HIERARCHICALLY ENCAPSULATED SIGNALS 有权
    时间恢复在通信中的分层信号

    公开(公告)号:US20150016578A1

    公开(公告)日:2015-01-15

    申请号:US13940278

    申请日:2013-07-12

    申请人: IPLIGHT LTD.

    IPC分类号: H04L7/027

    摘要: An apparatus includes a data flow circuit and a clock recovery circuit. The data flow circuit is configured to extract client data, which is encapsulated in an inner frame that is encapsulated in at least an outer frame, and to output the extracted client data in accordance with a client clock signal. The clock recovery circuit includes a first clock recovery module that is configured to recover a first clock signal that matches payload data in the outer frame, and a second clock recovery module that is configured to derive from the first clock signal a second clock signal that matches the client data in the inner frame, and to produce the client clock signal from the second clock signal, for use by the data flow circuit.

    摘要翻译: 一种装置包括数据流电路和时钟恢复电路。 数据流电路被配置为提取封装在封装在至少外部帧中的内部帧中的客户端数据,并且根据客户端时钟信号输出提取的客户端数据。 时钟恢复电路包括第一时钟恢复模块,其被配置为恢复与外部帧中的有效载荷数据匹配的第一时钟信号,以及第二时钟恢复模块,其被配置为从第一时钟信号导出匹配的第二时钟信号 内部帧中的客户端数据,并且从第二时钟信号产生客户端时钟信号,供数据流电路使用。

    DELIVERING CPRI AND ETHERNET SIGNALS OVER OPTICAL NETWORKS
    3.
    发明申请
    DELIVERING CPRI AND ETHERNET SIGNALS OVER OPTICAL NETWORKS 审中-公开
    在光网络上传送CPRI和以太网信号

    公开(公告)号:US20170063491A1

    公开(公告)日:2017-03-02

    申请号:US15242615

    申请日:2016-08-22

    申请人: IPLight Ltd.

    IPC分类号: H04L1/00

    摘要: A method for communication includes, receiving in a first communication interface input frames, which include data symbols derived by encoding respective characters, and one or more synchronization symbols distinguishable from the data symbols. The characters are recovered from the data symbols, and transmitted to a second communication interface by mapping the characters into communication frames and discarding the synchronization symbols, wherein a protocol for delivering the characters supports a mapping scheme for delivering the characters at a first data rate, and mapping the characters includes mapping the characters so as to deliver the characters at a second data rate lower than the first data rate. The characters are extracted from the communication frames in the second communication interface by synchronizing to the mapped input frames independently of the synchronization symbols. The input frames are reconstructed to including the data symbols and the synchronization symbols, by re-encoding the extracted characters.

    摘要翻译: 一种用于通信的方法包括:在第一通信接口中接收包括通过编码相应字符而导出的数据符号的输入帧以及可与数据符号区分开的一个或多个同步符号。 这些字符从数据符号中恢复,并通过将字符映射到通信帧并丢弃同步符号而发送到第二通信接口,其中用于传送字符的协议支持用于以第一数据速率传送字符的映射方案, 并且映射字符包括映射字符以便以低于第一数据速率的第二数据速率传送字符。 通过与独立于同步符号的映射输入帧同步,从第二通信接口中的通信帧中提取字符。 通过对所提取的字符进行重新编码,重建输入帧以包括数据符号和同步符号。

    PACKET LOSS COUNTER
    4.
    发明申请
    PACKET LOSS COUNTER 审中-公开
    分组丢失计数器

    公开(公告)号:US20140307562A1

    公开(公告)日:2014-10-16

    申请号:US13860551

    申请日:2013-04-11

    申请人: IPLIGHT LTD.

    发明人: Leon Bruckman

    IPC分类号: H04L12/26

    CPC分类号: H04L43/0835 H04L43/10

    摘要: A method for communication includes generating in a transmitter a sequence of data packets for transmission to a receiver. Control packets are inserted into the sequence in the transmitter, such that a given control packet is indicative of a count of the data packets that are transmitted in a time interval that ends with a previous control packet that precedes the given control packet. The sequence, including the data packets and the inserted control packets, is transmitted to the receiver.

    摘要翻译: 一种用于通信的方法包括在发射机中生成用于传输到接收机的数据分组序列。 控制分组被插入到发射机中的序列中,使得给定的控制分组指示以在给定控制分组之前的先前控制分组结束的时间间隔中发送的数据分组的计数。 包括数据包和插入的控制包的序列被发送到接收器。

    Delivering CPRI and ethernet signals over optical networks

    公开(公告)号:US10044471B2

    公开(公告)日:2018-08-07

    申请号:US15242615

    申请日:2016-08-22

    申请人: IPLight Ltd.

    IPC分类号: H04L1/00 H04L7/00 H04L25/49

    摘要: A method for passing communications over an Optical Transport Network (OTN) from a first communication interface to a second communication interface. The first interface extracts characters from received data symbols, maps the characters into OTN communication frames and discards the synchronization symbols. The mapping is performed using a Bit-synchronous Mapping Procedure (BMP), while filling some locations in the OTN frames with stuffing characters, so that the rate of the characters matches a desired rate of the OTN communication frames. The characters are extracted from the communication frames in the second communication interface by synchronizing to the mapped input frames independently of the synchronization symbols. The input frames are reconstructed to produce reconstructed input frames including the data symbols and the synchronization symbols, by re-encoding the extracted characters. In some embodiments, data from Ethernet frames is passed along with the extracted characters in the OTN frames.

    EFFICIENT MAPPING OF CPRI SIGNALS FOR SENDING OVER OPTICAL NETWORKS
    6.
    发明申请
    EFFICIENT MAPPING OF CPRI SIGNALS FOR SENDING OVER OPTICAL NETWORKS 有权
    用于发送光网络的CPRI信号的有效映射

    公开(公告)号:US20150180575A1

    公开(公告)日:2015-06-25

    申请号:US14569857

    申请日:2014-12-15

    申请人: IPLight Ltd.

    发明人: Leon Bruckman

    IPC分类号: H04B10/2575 H04L7/00

    摘要: A method for communication includes receiving in a first communication interface input frames, which include data symbols that were derived by encoding respective characters, and further include one or more synchronization symbols having no corresponding characters. The characters from the data symbols are recovered, and the recovered characters are transmitted to a second communication interface by mapping the characters into communication frames and discarding the synchronization symbols. The characters are extracted from the communication frames in the second communication interface by synchronizing to the input frames independently of the synchronization symbols. The input frames are reconstructed in the second communication interface, including the data symbols and the synchronization symbols, by re-encoding the extracted characters.

    摘要翻译: 一种用于通信的方法包括在第一通信接口中接收输入帧,所述输入帧包括通过对各个字符进行编码导出的数据符号,并且还包括一个或多个不具有对应字符的同步符号。 恢复来自数据符号的字符,并且通过将字符映射到通信帧并丢弃同步符号将恢复的字符发送到第二通信接口。 通过与独立于同步符号的输入帧同步,从第二通信接口中的通信帧中提取字符。 通过对所提取的字符进行重新编码,在第二通信接口中重建输入帧,包括数据符号和同步符号。

    Clock recovery in communication of hierarchically encapsulated signals
    7.
    发明授权
    Clock recovery in communication of hierarchically encapsulated signals 有权
    分层封装信号通信中的时钟恢复

    公开(公告)号:US08958514B2

    公开(公告)日:2015-02-17

    申请号:US13940278

    申请日:2013-07-12

    申请人: Iplight Ltd.

    IPC分类号: H04L7/00 H04L7/027

    摘要: An apparatus includes a data flow circuit and a clock recovery circuit. The data flow circuit is configured to extract client data, which is encapsulated in an inner frame that is encapsulated in at least an outer frame, and to output the extracted client data in accordance with a client clock signal. The clock recovery circuit includes a first clock recovery module that is configured to recover a first clock signal that matches payload data in the outer frame, and a second clock recovery module that is configured to derive from the first clock signal a second clock signal that matches the client data in the inner frame, and to produce the client clock signal from the second clock signal, for use by the data flow circuit.

    摘要翻译: 一种装置包括数据流电路和时钟恢复电路。 数据流电路被配置为提取封装在封装在至少外部帧中的内部帧中的客户端数据,并且根据客户端时钟信号输出提取的客户端数据。 时钟恢复电路包括第一时钟恢复模块,其被配置为恢复与外部帧中的有效载荷数据匹配的第一时钟信号,以及第二时钟恢复模块,其被配置为从第一时钟信号导出匹配的第二时钟信号 内部帧中的客户端数据,并且从第二时钟信号产生客户端时钟信号,供数据流电路使用。