WO2017005139A1 - 光传输系统中收发端之间的同步方法、装置及存储介质 - Google Patents

光传输系统中收发端之间的同步方法、装置及存储介质 Download PDF

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WO2017005139A1
WO2017005139A1 PCT/CN2016/088129 CN2016088129W WO2017005139A1 WO 2017005139 A1 WO2017005139 A1 WO 2017005139A1 CN 2016088129 W CN2016088129 W CN 2016088129W WO 2017005139 A1 WO2017005139 A1 WO 2017005139A1
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receiving end
data frame
sequence
receiving
information
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English (en)
French (fr)
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杨宁
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Sanechips Technology Co Ltd
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Sanechips Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation

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  • the present invention relates to optical transmission technologies in the field of communications, and in particular, to a method, device and computer storage medium for synchronizing between transceivers in an optical transmission system.
  • the current data transmission mainly adopts the wavelength division system.
  • the method is a digital signal processing method, also called 100G digital signal processing (DSP, Digital Signal Processing).
  • DSP Digital Signal Processing
  • the WDM system adopts 100G DSP processing technology.
  • the chip After power-on, the chip directly transmits data frames.
  • the equalization and synchronization of the receiving end gradually converge on the user data.
  • the data will be inserted at equal intervals to speed up the synchronization and equalization speed.
  • the user data sent at the beginning is not wasted due to the synchronization equalization; and even if there is a pilot, in order to maximize the user's throughput, the pilot density is usually much smaller than the data density, thus making synchronization and The speed of equalization is relatively slow, which also causes a waste of user data at the beginning.
  • the embodiments of the present invention provide a method, a device, and a computer storage medium for synchronizing between transceivers in an optical transmission system, so as to avoid that user data sent at the beginning cannot be accurately received. .
  • An embodiment of the present invention provides a method for synchronizing between transceivers in an optical transmission system, where the synchronization method includes:
  • the four-way handshake between the transceiver ends is completed by using the coded modulated sequence.
  • the information used to train the receiving end link includes:
  • Request data frame, response data frame, correct response message data frame is
  • the information for training the receiving end link is placed in the interaction control information to be sent, including:
  • the request data frame, the response data frame, and the correct response message data frame for training the receiving end link are respectively placed in the interactive control information to be sent.
  • the four-way handshake between the transceiver ends includes:
  • the sending end sends the request status to the receiving end; the receiving end returns a sequence of the response data frame to the sending end;
  • the transmitting end After receiving the sequence of the response data frame from the receiving end, the transmitting end sends a correct response message state to the receiving end; the receiving end returns a request data frame sequence to the transmitting end;
  • the transmitting end After receiving the sequence of request data frames from the receiving end, the transmitting end sends a response status to the receiving end; the receiving end returns a sequence of response data frames or a sequence of correct response message data frames to the transmitting end;
  • the transmitting end After receiving the correct response message data frame sequence from the receiving end, the transmitting end sends the data frame state to the receiving end, and sends the data frame state to the receiving end.
  • the number of appointments is: the number of correct response message data frames that are set in the interaction control information and received by the sender.
  • the embodiment of the invention provides a synchronization device between the transceiver terminals in the optical transmission system, and the synchronization device includes:
  • the information placing unit is configured to: put information for training the receiving end link into the interactive control information to be sent, and generate information for training the receiving end link;
  • a code modulation unit configured to encode and modulate the interaction control information including the link information of the training receiver to obtain a coded modulated sequence
  • a main control unit configured to complete the four-way handshake between the transceiver ends by using the modulated sequence
  • a sending and receiving unit configured to send the coded modulated sequence, and receive the information sent by the opposite end;
  • a storage unit configured to store information of the training receiver link and the modulated sequence.
  • the information insertion unit is further configured to: generate a request data frame, a response data frame, and a correct response message data frame of the training receiver link.
  • the information placing unit is further configured to: respectively insert, in the interaction control information to be sent, a request data frame, a response data frame, and a correct response message data frame for training the receiving end link. .
  • the main control unit is further configured to:
  • the sending end sends the request status to the receiving end; the receiving end returns a sequence of the response data frame to the sending end;
  • the transmitting end After receiving the sequence of the response data frame from the receiving end, the transmitting end sends a correct response message state to the receiving end; the receiving end returns a request data frame sequence to the transmitting end;
  • the transmitting end After receiving the sequence of request data frames from the receiving end, the transmitting end sends a response status to the receiving end; the receiving end returns a sequence of response data frames or a sequence of correct response message data frames to the transmitting end;
  • the transmitting end After receiving the correct response message data frame sequence from the receiving end, the transmitting end sends the data frame state to the receiving end, and sends the data frame state to the receiving end.
  • the synchronization device further includes:
  • a counting unit configured to count a sequence of received correct response message data frames
  • a setting unit configured to: in the interaction control information, set a sending end to receive the receiving end The number of correct response message data frames.
  • An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores a computer program for performing a synchronization method between the transceivers in the optical transmission system described above.
  • the method, device and computer storage medium for synchronizing between the transceivers in the optical transmission system provided by the embodiment of the present invention complete the link in the process of four handshakes by using the interactive control information of the link information of the training receiver.
  • the link between the two peer nodes is quickly established; and the saved time for establishing the link can be used to send data, which increases the throughput of the user data.
  • the embodiment of the present invention intelligently adopts a four-way handshake mechanism.
  • the receiving end it is convenient for the receiving end to know when to receive the data frame, so that the stability of the whole system can be improved; furthermore, the interactive control information including the link information of the training receiving end can make the receivers at both ends in a good state, and can guarantee the first A data frame is successfully decoded, which simplifies some processes in which the receiving end judges whether the received data is a data frame, and simplifies the scheduling of the entire receiver, directly or indirectly to increase user throughput.
  • FIG. 1 is a schematic flowchart of an implementation method of a synchronization method between transceivers in an optical transmission system according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a swim lane of a four-way handshake in a method for synchronizing between transceivers in an optical transmission system according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a synchronization device between transceivers in an optical transmission system according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a synchronization device between transceivers in another optical transmission system according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a method for synchronizing a transmitting and receiving end in an optical transmission system according to an embodiment of the present disclosure. As shown in FIG. 1 , a method for synchronizing transceivers in an optical transmission system according to this embodiment includes:
  • Step 101 The receiver at the transmitting end puts information for training the link of the receiving end into the interactive control information to be sent;
  • the information for training the receiving end link includes the following information: a request data frame, a response data frame, and an Acknowledgement (Ack) data frame.
  • the placing the information for training the receiving end link in the interaction control information to be sent includes: inserting, in the interaction control information to be sent, a request data frame for training the receiving end link, Respond to the data frame and correctly answer the message data frame.
  • the location of the request data frame, the response data frame, and the correct response message data frame that are specifically used for training the receiving end link is not limited, and may be any three fixed positions.
  • the order in which data frames are placed is not limited; the specific placement location is as long as the sender and receiver are pre-negotiated.
  • Step 102 The receiver at the transmitting end encodes and modulates the interaction control information including the link information of the training receiver to obtain a coded modulated sequence.
  • Step 103 The receiver of the transmitting end and the receiver of the receiving end complete the four-way handshake between the transmitting and receiving ends by using the coded modulated sequence.
  • FIG. 2 is a schematic diagram of a four-way handshake in a synchronization method between transceivers in an optical transmission system according to an embodiment of the present invention.
  • the specific four-way handshake is performed between a receiver at the transmitting end and a receiver at the receiving end.
  • the information for training the receiving end link includes: a request data frame, a response data frame, and a correct response message data frame
  • the transceiver end includes:
  • Step 201a The sending end sends a request status to the receiving end.
  • Step 201b The receiving end returns a sequence of response data frames to the transmitting end.
  • Step 202a After receiving the sequence of the response data frame from the receiving end, the transmitting end sends a correct response message state to the receiving end.
  • Step 202b The receiving end returns a sequence of request data frames to the transmitting end.
  • Step 203a After receiving the sequence of request data frames from the receiving end, the transmitting end sends a response status to the receiving end.
  • Step 203b The receiving end returns a sequence of response data frames or a sequence of correct response message data frames to the transmitting end.
  • Steps 204a to 204b after receiving the number of the correct response message data frame sequence from the receiving end, the transmitting end sends the data frame state to the receiving end; and in the state of transmitting the data frame, the data is always sent to the receiving end;
  • steps 202a, 202b, 203a and 203b are repeatedly performed;
  • the number of the agreement is the number of correct response message data frames that are set in the interaction control information and received by the sender.
  • step 201a and step 201b are first handshakes
  • steps 202a and 202b are second handshakes
  • steps 203a and 203b are third handshakes
  • steps 204a and 204b are fourth.
  • Second handshake is first handshake.
  • the synchronization method between the transceivers in the optical transmission system completes the link in the four-way handshake process through the interaction control information with the link information of the training receiver, which helps the two nodes of the peer
  • the link is quickly established; the time for establishing the link can be used to send data and increase the throughput of the user data.
  • the embodiment of the present invention can improve the stability of the entire system and simplify the scheduling of the entire receiver, directly or indirectly to facilitate the increase. Large user throughput.
  • the embodiment of the present invention further provides a synchronization device between the transceiver terminals in the optical transmission system.
  • the synchronization device is placed in the receiver.
  • the synchronization device includes :
  • the information placing unit 301 is configured to: put information for training the receiving end link into the interaction control information to be sent;
  • the information placing unit 301 is placed in a receiver at the transmitting end;
  • the code modulation unit 302 is configured to encode and modulate the interaction control information including the link information of the training receiver to obtain a coded and modulated sequence;
  • the code modulation unit 302 is respectively placed in the receiver of the transmitting end and the receiver of the receiving end;
  • the decoding modulation unit can use the decoding modulation function of the receiver itself;
  • the code modulation unit 302 and the decoding modulation unit need to be placed in the receiver of the transceiver.
  • the main control unit 303 is configured to complete the four-way handshake between the transceiver ends by using the coded modulated sequence
  • the main control unit 303 needs to be placed in both the receiver of the transmitting end and the receiver of the receiving end;
  • the sending and receiving unit 304 is configured to send the coded modulated sequence, and receive information sent by the opposite end;
  • the transmitting and receiving unit 304 needs to be placed in both the receiver of the transmitting end and the receiver of the receiving end; when placed at the receiver of the transmitting end, the coded modulated sequence needs to be sent and received by the opposite end.
  • Information when placed at the receiver of the receiving end, configured to receive information sent by the opposite end;
  • the storage unit 305 is configured to store information of the training receiving end link and the coded modulated sequence Column
  • the storage unit 305 is placed in a receiver at the transmitting end.
  • the information placing unit 301 generates information for training the link of the receiving end, and puts information for training the link of the receiving end into the interactive control information to be sent, the training receiving end chain
  • the information of the path is stored in the storage unit 305; then, the code modulation unit 302 encodes and modulates the interactive control information including the link information of the training receiver to obtain a coded modulated sequence, and the storage unit 305 decodes the coded sequence.
  • the main control unit 303 completes the four-way handshake between the transceivers by using the coded modulated sequence, and the sending and receiving unit 304 transmits the message sent by the peer receiver to the main control unit 303, and sends the main control unit 303.
  • the control information is sent to the peer receiver.
  • the embodiment of the present invention provides a preferred implementation manner.
  • the information insertion unit 301 is specifically configured to generate a request data frame, a response data frame, and a correct response message data frame for training the receiving end link.
  • a request data frame, a response data frame, and a correct response message data frame for training the receiving end link are respectively placed in the interactive control information to be sent.
  • the main control unit of the transmitting end is set to 303-1, and the main control unit of the receiving end is set to 303-2, and the specific configuration is:
  • the transmitting end main control unit 303-1 sends a request status to the receiving end main control unit 303-2;
  • the receiving end main control unit 303-2 returns a sequence of response data frames to the transmitting end main control unit 303-1;
  • the transmitting end main control unit 303-1 After receiving the sequence of the response data frame from the receiving end main control unit 303-2, the transmitting end main control unit 303-1 sends a correct response message status to the receiving end main control unit 303-2;
  • the receiving end main control unit 303-2 returns a request data frame sequence to the transmitting end main control unit 303-1;
  • the transmitting end main control unit 303-1 After receiving the sequence of request data frames from the receiving end main control unit 303-2, the transmitting end main control unit 303-1 sends a response status to the receiving end main control unit 303-2;
  • the receiving end main control unit 303-2 returns a sequence of response data frames to the transmitting end main control unit 303-1 or Correct response message data frame sequence;
  • the transmitting end main control unit 303-1 After receiving the agreed number of the correct response message data frame sequence from the receiving end main control unit 303-2, the transmitting end main control unit 303-1 transmits the data frame state to the receiving end main control unit 303-2; In the state of the data frame, the data is always sent to the receiving end main control unit 303-2;
  • the synchronization device between the transceivers in the optical transmission system further includes:
  • the counting unit 307 is configured to count the sequence of the received correct response message data frames
  • the counting unit 307 is placed in the receiver of the transmitting end to perform statistics on the sequence of correct response message data frames sent by the receiving end;
  • the setting unit 306 is configured to set, in the interaction control information, the number of correct response message data frames that the transmitting end receives at the receiving end.
  • the synchronization device between the transceiver end of the optical transmission system provided by this embodiment, the information insertion unit 301, the generated request data frame, the response data frame of the training receiver link, The correct response message data frame is placed in a fixed position of the interactive control information to be sent, and the code modulation unit 302 encodes and modulates the interactive control information including the link information of the training receiver to obtain a coded modulated sequence; Then, the transmitting and receiving unit 304 transmits the coded and modulated sequence to the receiver of the opposite end; after that, the receiving end main control unit 303 performs the four-way handshake by using the coded modulation sequence, and sends in the process of performing the four-way handshake.
  • the counting unit 307 of the terminal counts the sequence of correct response message data frames received by the transmitting and receiving unit 304.
  • the main control unit 303 of the transmitting end is notified to start transmitting data.
  • the information placing unit 301, the code modulating unit 302, the main control unit 303, the transmitting and receiving unit 304, the storage unit 305, the setting unit 306, and the counting unit 307 may all be configured by a central processing unit located in the terminal.
  • a central processing unit located in the terminal.
  • CPU Central Processing Unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the synchronization device between the transceivers in the optical transmission system completes the link in the process of four handshakes by using the interactive control information with the link information of the training receiver, which helps the two peers. Quickly establish links between nodes, and save time for establishing links, which can be used to send data and increase the throughput of user data.
  • the smart four-way handshake mechanism is convenient for the receiving end to synchronize when to know the data frame. This improves the stability of the entire system.
  • the interactive control information including the link information of the training receiver makes the receivers at both ends in good condition, which can ensure the decoding of the first data frame successfully, and simplify the judgment of the receiving end. Whether the received data is a process of data frames, streamlining the scheduling of the entire receiver, directly or indirectly to increase user throughput.
  • An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used in a method for synchronizing between transceivers in the optical transmission system described in the foregoing embodiments.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated in one processing order.
  • each unit may be separately used as a unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware or a hardware plus software functional unit. Formal realization.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage device includes the following steps:
  • the foregoing storage medium includes: a removable storage device, a read-only memory (ROM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a ROM, a magnetic disk, or an optical disk.
  • information for training the link of the receiving end is placed into the interactive control information to be sent; the interactive control information including the link information of the training receiving end is encoded to obtain a coded sequence, and the modulation station is obtained.
  • the modulated sequence to complete the four-way handshake between the transceivers; thus, by avoiding that the user data sent at the beginning cannot be accurately received Achieve increased user throughput.

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Abstract

本发明实施例提供了一种光传输系统中收发端之间的同步方法，所述方法包括：向所需发送的交互控制信息中置入用于训练接收端链路的信息；对含有训练接收端链路信息的交互控制信息进行编码，得到编码后的序列，调制所述序列；利用所述调制后的序列完成收发端之间的四次握手。本发明实施例还提供了一种光传输系统中收发端之间的同步装置及计算机存储介质。

Description

光传输系统中收发端之间的同步方法、装置及存储介质 技术领域
本发明涉及通信领域中的光传输技术，尤其涉及一种光传输系统中收发端之间的同步方法、装置及计算机存储介质。
背景技术
在光传输技术领域中，目前的数据传输主要采用波分系统，但是，采用波分系统进行数据传输的过程中，会存在色度色散、偏振膜色散、强滤波效应等问题，现有的处理办法为数字信号处理方法，也称之为100G数字信号处理(DSP，Digital Signal Processing)。采用100G DSP处理技术的波分系统，上电后芯片直接发送数据帧，接收端的均衡和同步靠用户数据逐渐收敛，数据中会等间隔的插入导频来加快同步和均衡的速度，但是，起始时发送的用户数据由于同步均衡没有收敛会被浪费掉；且即使有导频，为了使用户的吞吐量最大化，通常导频的密度也会比数据密度小很多，这样，会使同步和均衡的速度比较慢，同样造成起始时用户数据的浪费。
发明内容
有鉴于此，为解决现有技术存在的问题，本发明实施例提供一种光传输系统中收发端之间的同步方法、装置及计算机存储介质，避免起始时发送的用户数据不能被准确接收。
本发明实施例的技术方案是这样实现的：
本发明实施例提供了一种光传输系统中收发端之间的同步方法，所述同步方法包括：
向所需发送的交互控制信息中置入用于训练接收端链路的信息；
对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
利用所述编码调制后的序列完成收发端之间的四次握手。
上述方案中，所述用于训练接收端链路的信息，包括：
请求数据帧、响应数据帧、正确应答消息数据帧。
上述方案中，所述向所需发送的交互控制信息中置入用于训练接收端链路的信息，包括：
在所述所需发送的交互控制信息中分别置入用于训练接收端链路的所述请求数据帧、所述响应数据帧、所述正确应答消息数据帧。
上述方案中，所述收发端之间的四次握手包括：
发送端向接收端发送请求状态；接收端向发送端返回响应数据帧的序列；
发送端收到来自接收端的响应数据帧的序列后，向接收端发送正确应答消息状态；接收端向发送端返回请求数据帧序列；
发送端收到来自接收端的请求数据帧序列后，向接收端发送响应状态；接收端向发送端返回响应数据帧序列或正确应答消息数据帧序列；
发送端收到来自接收端的正确应答消息数据帧序列的数目达到约定数目后，向接收端发送数据帧状态；并在发送数据帧的状态下，向接收端一直发送数据。
上述方案中，所述约定数目为：设置于所述交互控制信息中、发送端接收到接收端的正确应答消息数据帧的数目。
本发明实施例提供了一种光传输系统中收发端之间的同步装置，所述同步装置包括：
信息置入单元，配置为向所需发送的交互控制信息中置入用于训练接收端链路的信息，以及生成训练接收端链路的信息；
编码调制单元，配置为对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
主控单元，配置为利用所述调制后的序列完成收发端之间的四次握手；
发送接收单元，配置为发送所述编码调制后的序列，以及接收对端发送过来的信息；
存储单元，配置为存储所述训练接收端链路的信息以及所述调制后的序列。
上述方案中，所述信息置入单元，还配置为：产生训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
上述方案中，所述信息置入单元，还配置为：在所述所需发送的交互控制信息中分别置入用于训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
上述方案中，所述主控单元，还配置为：
发送端向接收端发送请求状态；接收端向发送端返回响应数据帧的序列；
发送端收到来自接收端的响应数据帧的序列后，向接收端发送正确应答消息状态；接收端向发送端返回请求数据帧序列；
发送端收到来自接收端的请求数据帧序列后，向接收端发送响应状态；接收端向发送端返回响应数据帧序列或正确应答消息数据帧序列；
发送端收到来自接收端的正确应答消息数据帧序列的数目达到约定数目后，向接收端发送数据帧状态；并在发送数据帧的状态下，向接收端一直发送数据。
上述方案中，所述的同步装置还包括：
计数单元，配置为对接收到的正确应答消息数据帧序列进行计数；
设置单元，配置为在所述的交互控制信息中设置发送端接收到接收端 的正确应答消息数据帧的数目。
本发明实施例提供了一种计算机存储介质，所述计算机存储介质中存储有计算机程序，所述计算机程序用于执行以上所述的光传输系统中收发端之间的同步方法。
本发明实施例提供的光传输系统中收发端之间的同步方法、装置及计算机存储介质，通过带有训练接收端链路信息的交互控制信息，在四次握手的过程中完成链接，有助于对等的两个节点之间快速建立链接；而且，节省的建立链接的时间可以用来发送数据，增大了用户数据的吞吐量；同时，本发明实施例巧妙的采用四次握手机制，方便接收端同步知道何时接收数据帧，这样，能提高整个系统的稳定性；再者，通过含有训练接收端链路信息的交互控制信息，使得两端接收机处于良好的状态，可以保证第一个数据帧解码成功，简化了接收端判断接收到的数据是否为数据帧的一些流程，精简了整个接收机的调度，直接或间接利于增大用户吞吐量。
附图说明
图1为本发明实施例提供的光传输系统中收发端之间的同步方法的实现流程示意图；
图2为本发明实施例提供的光传输系统中收发端之间的同步方法中四次握手的泳道示意图；
图3为本发明实施例提供的一种光传输系统中收发端之间的同步装置的结构示意图；
图4为本发明实施例提供的另一种光传输系统中收发端之间的同步装置的结构示意图。
具体实施方式
下面结合附图和实施例对本发明作进一步的详细说明，本发明实施例 中以采用100G DSP的波分系统中两端接收机之间数据传输的同步过程为例来介绍。
图1为本发明实施例提供的光传输系统中收发端之间的同步方法的实现流程示意图，如图1所示，本实施例提供的一种光传输系统中收发端之间同步方法包括：
步骤101：发送端的接收机向所需发送的交互控制信息中置入用于训练接收端链路的信息；
这里，所述用于训练接收端链路的信息，包括以下信息：请求(request)数据帧、响应(response)数据帧、正确应答消息(Acknowledgement，Ack)数据帧。
所述向所需发送的交互控制信息中置入用于训练接收端链路的信息具体包括：在所需发送的交互控制信息的中分别置入用于训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
这里，对于具体用于训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧置入于交互控制信息的哪个位置，不做限定，可以是任选三个固定的位置，三种类型的数据帧的置入顺序也不做限定；具体置入位置只要发送端和接收端预先协商好即可。
步骤102：发送端的接收机对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
步骤103：发送端的接收机与接收端的接收机利用所述编码调制后的序列完成收发端之间的四次握手。
作为一种实施方式，图2为发明实施例提供的光传输系统中收发端之间的同步方法中四次握手的泳道示意图，具体四次握手在发送端的接收机与接收端的接收机之间进行。如图2所示，所述用于训练接收端链路的信息包括：请求数据帧、响应数据帧、正确应答消息数据帧时，所述收发端 之间的四次握手过程包括：
步骤201a：发送端向接收端发送请求状态；
步骤201b：接收端向发送端返回响应数据帧的序列；
步骤202a：发送端收到来自接收端的响应数据帧的序列后，向接收端发送正确应答消息状态；
步骤202b：接收端向发送端返回请求数据帧序列；
步骤203a：发送端收到来自接收端的请求数据帧序列后，向接收端发送响应状态；
步骤203b：接收端向发送端返回响应数据帧序列或正确应答消息数据帧序列；
步骤204a～204b：发送端收到来自接收端的正确应答消息数据帧序列的数目达到约定数目后，向接收端发送数据帧状态；并在发送数据帧的状态下，向接收端一直发送数据；
这里，如果没有达到约定数目，则重复执行步骤202a、202b、203a和步骤203b；
其中，所述约定数目是在交互控制信息中设置的、发送端接收到接收端的正确应答消息数据帧的数目。
图2所示的处理过程中，步骤201a和步骤201b是第一次握手，步骤202a和步骤202b是第二次握手，步骤203a和步骤203b是第三次握手，步骤204a和步骤204b是第四次握手。
本发明实施例提供的光传输系统中收发端之间的同步方法，通过带有训练接收端链路信息的交互控制信息，在四次握手过程中完成链接，有助于对等的两个节点之间快速建立链接；节省的建立链接的时间可用来发送数据，增大用户数据的吞吐量，本发明实施例还能提高整个系统的稳定性，简化整个接收机的调度，直接或间接利于增大用户吞吐量。
为实现上述方法，本发明实施例还提供了一种光传输系统中收发端之间的同步装置，在本实施例中该同步装置放置于接收机中，如图3所示，该同步装置包括：
信息置入单元301，配置为向所需发送的交互控制信息中置入用于训练接收端链路的信息；
本实施例中，所述信息置入单元301放置于发送端的接收机中；
编码调制单元302，配置为对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
本实施例中，所述编码调制单元302分别放置于发送端的接收机和接收端的接收机中；
另外，为了将对端发送过来的序列解码调制，还需要配有解码调制单元，解码调制单元可以使用接收机本身的解码调制功能；
也就是说，收发端的接收机中均需放置编码调制单元302和解码调制单元。
主控单元303，配置为利用所述编码调制后的序列完成收发端之间的四次握手；
本实施例中，所述主控单元303在发送端的接收机和接收端的接收机中均需放置；
发送接收单元304，配置为发送所述编码调制后的序列，并接收对端发来的信息；
本实施例中，所述发送接收单元304在发送端的接收机和接收端的接收机中均需放置；放置于发送端的接收机时，需要发送所述编码调制后的序列并接收对端发来的信息；放置于接收端的接收机时，配置为接收对端发来的信息；
存储单元305，配置为存储训练接收端链路的信息以及编码调制后的序 列；
本实施例中，所述存储单元305放置于发送端的接收机中。
作为一种实施方式，信息置入单元301产生用于训练接收端链路的信息，并将用于训练接收端链路的信息置入所需发送的交互控制信息中，所述训练接收端链路的信息存入存储单元305；然后，编码调制单元302将含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列，存储单元305将所述编码调制后的序列进行存储；主控单元303利用编码调制后的序列完成收发端之间的四次握手，发送接收单元304将对端接收机发来的消息传给主控单元303，并将主控单元303发出的控制信息发送给对端接收机。
这里，本发明实施例提供了一种较佳的实施方式，在所述信息置入单元301，具体配置为产生训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧；配置为在所述所需发送的交互控制信息中分别置入用于训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
这里，对于主控单元303，为了方便叙述将发送端的主控单元设为303-1，接收端的主控单元设为303-2，具体配置为：
发送端主控单元303-1向接收端主控单元303-2发送请求状态；
接收端主控单元303-2向发送端主控单元303-1返回响应数据帧的序列；
发送端主控单元303-1收到来自接收端主控单元303-2的响应数据帧的序列后，向接收端主控单元303-2发送正确应答消息状态；
接收端主控单元303-2向发送端主控单元303-1返回请求数据帧序列；
发送端主控单元303-1收到来自接收端主控单元303-2的请求数据帧序列后，向接收端主控单元303-2发送响应状态；
接收端主控单元303-2向发送端主控单元303-1返回响应数据帧序列或 正确应答消息数据帧序列；
发送端主控单元303-1收到来自接收端主控单元303-2的正确应答消息数据帧序列的数目达到约定数目后，向接收端主控单元303-2发送数据帧状态；并在发送数据帧的状态下，向接收端主控单元303-2一直发送数据；
如图4所示，光传输系统中收发端之间的同步装置还包括：
计数单元307，配置为对接收到的正确应答消息数据帧序列进行计数；
这里，所述计数单元307放置于发送端接收机中，对接收端发来的正确应答消息数据帧序列进行统计；
设置单元306，配置为在所述的交互控制信息中设置发送端接收到接收端的正确应答消息数据帧的数目。
具体的，如图4所示，本实施例提供的光传输系统收发端之间的同步装置，所述信息置入单元301，将产生的训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧置入所述所需发送的交互控制信息的某一固定位置，编码调制单元302将含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；然后，发送接收单元304将所述编码调制后的序列发送给对端的接收机；之后，接收端主控单元303利用所述编码调制序列进行四次握手，在进行四次握手的过程中，发送端的计数单元307对发送接收单元304接收到的正确应答消息数据帧序列进行计数，当数目达到发送端中设置单元306设置的约定数目后，通知发送端的主控单元303开始发送数据。
另外，在实际应用中，所述信息置入单元301、编码调制单元302、主控单元303、发送接收单元304、存储单元305、设置单元306、计数单元307均可由位于终端中的中央处理器(Central Processing Unit，CPU)、微处理器(Micro Processor Unit，MPU)、数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array， FPGA)等实现。
本发明实施例提供的光传输系统中收发端之间的同步装置，通过带有训练接收端链路信息的交互控制信息，在四次握手的过程中完成链接，有助于对等的两个节点之间快速建立链接，而且节省的建立链接的时间，可以用来发送数据，增大了用户数据的吞吐量，同时，巧妙的四次握手机制，方便接收端同步知道何时来数据帧，这样提高了整个系统的稳定性，再者，通过含有训练接收端链路信息的交互控制信息使得两端接收机处于的状态比较良好，可以保证第一个数据帧解码成功，简化了接收端判断接受到的数据是否为数据帧的一些流程，精简了整个接收机的调度，直接或间接利于增大用户吞吐量。
本发明实施例提供了一种计算机存储介质，所述计算机存储介质中存储有计算机程序，所述计算机程序用于上述各实施例所述的光传输系统中收发端之间同步方法。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本发明各实施例中的各功能单元可以全部集成在一个处理单 元中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、只读存储器(ROM，Read-Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
或者，本发明上述集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：移动存储设备、ROM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。
工业实用性
本发明实施例中，向所需发送的交互控制信息中置入用于训练接收端链路的信息；对含有训练接收端链路信息的交互控制信息进行编码，得到编码后的序列，调制所述序列；利用所述调制后的序列完成收发端之间的四次握手；如此，能够通过避免起始时发送的用户数据不能被准确接收来 达到增加用户吞吐量的目的。

Claims (11)

  1. 一种光传输系统中收发端之间的同步方法，所述同步方法包括：
    向所需发送的交互控制信息中置入用于训练接收端链路的信息；
    对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
    利用所述编码调制后的序列完成收发端之间的四次握手。
  2. 根据权利要求1所述的同步方法，其中，所述用于训练接收端链路的信息，包括：
    请求数据帧、响应数据帧、正确应答消息数据帧。
  3. 根据权利要求2所述的同步方法，其中，所述向所需发送的交互控制信息中置入用于训练接收端链路的信息，包括：
    在所述所需发送的交互控制信息中分别置入用于训练接收端链路的所述请求数据帧、所述响应数据帧、所述正确应答消息数据帧。
  4. 根据权利要求3所述的同步方法，其中，所述收发端之间的四次握手包括：
    发送端向接收端发送请求状态；接收端向发送端返回响应数据帧的序列；
    发送端收到来自接收端的响应数据帧的序列后，向接收端发送正确应答消息状态；接收端向发送端返回请求数据帧序列；
    发送端收到来自接收端的请求数据帧序列后，向接收端发送响应状态；接收端向发送端返回响应数据帧序列或正确应答消息数据帧序列；
    发送端收到来自接收端的正确应答消息数据帧序列的数目达到约定数目后，向接收端发送数据帧状态；并在发送数据帧的状态下，向接收端一直发送数据。
  5. 根据权利要求4所述的同步方法，其中，所述约定数目为：设置于 所述交互控制信息中、发送端接收到接收端的正确应答消息数据帧的数目。
  6. 一种光传输系统中收发端之间的同步装置，所述同步装置包括：
    信息置入单元，配置为向所需发送的交互控制信息中置入用于训练接收端链路的信息，以及生成训练接收端链路的信息；
    编码调制单元，配置为对含有训练接收端链路信息的交互控制信息进行编码和调制，得到编码调制后的序列；
    主控单元，配置为利用所述调制后的序列完成收发端之间的四次握手；
    发送接收单元，配置为发送所述编码调制后的序列，以及接收对端发送过来的信息；
    存储单元，配置为存储所述训练接收端链路的信息以及所述调制后的序列。
  7. 根据权利要求6所述的同步装置，其中，所述信息置入单元，配置为：产生训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
  8. 根据权利要求7所述的同步装置，其中，所述信息置入单元，配置为：在所述所需发送的交互控制信息中分别置入用于训练接收端链路的请求数据帧、响应数据帧、正确应答消息数据帧。
  9. 根据权利要求8所述的同步装置，其中，所述主控单元，配置为：
    发送端向接收端发送请求状态；接收端向发送端返回响应数据帧的序列；
    发送端收到来自接收端的响应数据帧的序列后，向接收端发送正确应答消息状态；接收端向发送端返回请求数据帧序列；
    发送端收到来自接收端的请求数据帧序列后，向接收端发送响应状态；接收端向发送端返回响应数据帧序列或正确应答消息数据帧序列；
    发送端收到来自接收端的正确应答消息数据帧序列的数目达到约定数 目后，向接收端发送数据帧状态；并在发送数据帧的状态下，向接收端一直发送数据。
  10. 根据权利要求9所述的同步装置，其中，所述同步装置还包括：
    计数单元，配置为对接收到的正确应答消息数据帧序列进行计数；
    设置单元，配置为在所述的交互控制信息中设置发送端接收到接收端的正确应答消息数据帧的数目。
  11. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1至5任一项所述的方法。
PCT/CN2016/088129 2015-07-03 2016-07-01 光传输系统中收发端之间的同步方法、装置及存储介质 Ceased WO2017005139A1 (zh)

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