WO2016192112A1 - Procédé et appareil de traitement de signal série à grande vitesse - Google Patents

Procédé et appareil de traitement de signal série à grande vitesse Download PDF

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Publication number
WO2016192112A1
WO2016192112A1 PCT/CN2015/080929 CN2015080929W WO2016192112A1 WO 2016192112 A1 WO2016192112 A1 WO 2016192112A1 CN 2015080929 W CN2015080929 W CN 2015080929W WO 2016192112 A1 WO2016192112 A1 WO 2016192112A1
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Prior art keywords
control information
receiving end
data stream
packet
speed serial
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PCT/CN2015/080929
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English (en)
Chinese (zh)
Inventor
薛建林
何智
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/080929 priority Critical patent/WO2016192112A1/fr
Priority to CN201580001250.XA priority patent/CN106797357B/zh
Publication of WO2016192112A1 publication Critical patent/WO2016192112A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems

Definitions

  • the present invention relates to the field of serial communication technologies, and in particular, to a method and an apparatus for processing a high speed serial signal.
  • High-speed serial communication technology generally refers to a serial communication technology in which the data transmission rate reaches a prescribed rate (for example, 6.25 Gbps).
  • the Serializer/Deserializer (SerDes) technology is a point-to-point high-speed serial communication technology that has received extensive attention in the communications industry.
  • Serdes technology multiple low-speed parallel signals are first converted into high-speed serial signals by a serializer.
  • the high-speed serial signals are transmitted to the deserializer via a serial channel (for example, a high-speed cable or a printed circuit board backplane).
  • the deserializer reconverts the received high speed serial signal into a low speed parallel signal.
  • the equalization technique is used to process the high-speed serial signal, which can be implemented by using a forward forward equalizer (Feed Forward Equalization) (ie, "FFE”) in the deserializer (ie, pre-emphasis processing of the high-speed serial signal). It can also be implemented by using a Decision Feedback Equalizer (“DFE”) in the deserializer (that is, adaptive equalization processing on high-speed serial signals).
  • FFE forward forward equalizer
  • DFE Decision Feedback Equalizer
  • the FFE scale when used to process the high-speed serial signal transmitted by the serializer, it can only be performed before the high-speed serial communication is established between the transmitting end and the receiving end. If the serial channel condition changes due to temperature, aging, etc. during high-speed serial communication, the transmission loss of the high-speed serial signal through the serial channel will also change, if the transmission loss of the high-speed serial signal Exceeding the adjustment range of the DFE equalizer will result in packet loss or even service interruption.
  • Embodiments of the present invention provide a high-speed serial signal processing method and apparatus, which can solve the problem that only a DFE equalizer can be used to process transmission loss of a high-speed serial signal after establishing high-speed serial communication, and when a serial channel condition is used Changes have caused the transmission loss of high-speed serial signals to exceed DFE equalization When the scope of the adjustment capability of the device is affected, the quality of the service transmission is affected.
  • the technical solution is as follows:
  • an embodiment of the present invention provides a method for processing a high-speed serial signal, which is executed by a receiving end, and the method includes:
  • the high-speed serial signal is pre-emphasized according to the acquired control information.
  • the data stream includes a plurality of packets, where the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control In the message.
  • the acquiring the control information in the data stream includes:
  • the acquiring the control information in the data stream includes:
  • the data stream includes a service packet and an idle gap between the adjacent service packets, where the service data is carried in the service packet, and the control information is carried in the idle gap.
  • control information includes: an adjustment instruction, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust an equalization state of the receiving end.
  • an embodiment of the present invention provides a method for processing a high-speed serial signal, which is executed by a transmitting end, and the method includes:
  • the data stream includes a plurality of packets, where the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control In the message.
  • an embodiment of the present invention provides a high-speed serial signal processing apparatus, which is disposed in a receiving end, where the apparatus includes:
  • a receiving module configured to receive a data stream sent by the sending end, where the data stream carries service data and control information, where the control information is used to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end;
  • An obtaining module configured to acquire control information in the data stream
  • a processing module configured to perform pre-emphasis processing on the high-speed serial signal according to the acquired control information.
  • the data stream includes a plurality of packets, where the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control In the message.
  • the acquiring module includes:
  • a message processing unit configured to parse each of the plurality of packets to obtain a preamble of each of the packets
  • a packet obtaining unit configured to obtain a packet whose preamble is a preset preamble in the plurality of packets, where the preset preamble is used to indicate that the packet carrying the preset preamble is a control packet;
  • control information acquiring unit configured to acquire the control information from the obtained control message
  • the packet processing unit is further configured to parse each of the plurality of packets to obtain a virtual local area network Vlan label of each of the packets;
  • the packet obtaining unit is further configured to obtain a packet in which the Vlan label is a preset Vlan label, and the preset Vlan label is used to indicate that the packet carrying the preset Vlan label is controlled.
  • the control information acquiring unit is further configured to acquire the control information from the obtained control message.
  • the data stream includes a service packet and a free space between adjacent service packets.
  • the service data is carried in the service packet, and the control information is carried in the idle gap.
  • control information includes: an adjustment instruction, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust an equalization state of the receiving end.
  • an embodiment of the present invention provides a high-speed serial signal processing apparatus, which is disposed in a transmitting end, where the apparatus includes:
  • a generating module configured to generate a data stream, where the data stream carries service data and control information, where the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end;
  • a sending module configured to send the data stream to the receiving end.
  • the data stream includes a plurality of packets, where the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control In the message.
  • an embodiment of the present invention provides a high-speed serial signal processing apparatus, where the apparatus includes:
  • a processor a memory, a bus, and a communication interface; the memory for storing computer execution instructions, the processor being coupled to the memory via the bus, the processor executing the memory storage when the computer is running
  • the computer executes instructions to cause the computer to perform the method as described in the first aspect above.
  • an embodiment of the present invention provides a high-speed serial signal processing apparatus, where the apparatus includes:
  • a processor a memory, a bus, and a communication interface; the memory for storing computer execution instructions, the processor being coupled to the memory via the bus, the processor executing the memory storage when the computer is running
  • the computer executes instructions to cause the computer to perform the method of the second aspect described above.
  • the control information is used to indicate The receiving end performs pre-emphasis processing on the high-speed serial signal sent by the receiving end; then acquires control information in the data stream; and finally performs pre-emphasis processing on the high-speed serial signal according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for processing a high speed serial signal according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a method for processing a high speed serial signal according to Embodiment 2 of the present invention.
  • FIG. 4 is an interaction diagram of a method for processing a high speed serial signal according to Embodiment 3 of the present invention.
  • FIG. 5 is an interaction diagram of a method for processing a high speed serial signal according to Embodiment 4 of the present invention.
  • FIG. 6 is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 7 of the present invention.
  • Embodiment 8 of the present invention is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 8 of the present invention.
  • FIG. 10 is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 9 of the present invention.
  • FIG. 11 is a schematic structural diagram of a high-speed serial signal processing apparatus according to Embodiment 10 of the present invention.
  • the network architecture includes: a receiving end 1 and a transmitting end 2, and both the receiving end 1 and the transmitting end 2 are communication devices for high-speed serial communication, and at least one pair of strings can be passed between the receiving end 1 and the transmitting end 2.
  • the channel 3 is connected.
  • the receiving end 1 and the transmitting end 2 may be terminal devices or integrated circuit chips, and the serial channel 3 may be a high speed cable or a printed circuit board backplane.
  • the receiving end 1 includes a serializer 11 for transmitting a high-speed serial signal, a deserializer 12 for receiving a high-speed serial signal, a processor 13, an interpolator 14, and a splitter 15, respectively.
  • the serializer 11 and the processor 13 are electrically connected, and the splitter 15 is electrically connected to the deserializer 12 and the processor 13, respectively.
  • the interpolator 14 is configured to carry control information in the data stream and transmit it through the serializer 11.
  • the separator 15 is used to separate the control information from the data stream received by the deserializer 12.
  • the serializer 11 includes an FFE equalizer 111 for pre-emphasizing the transmitted high speed serial signal
  • the deserializer 12 includes a DFE equalizer 121 for adaptive frequency compensation adjustment of the received high speed serial signal.
  • the FFE equalizer 111 and the DFE equalizer 121 are both electrically coupled to the processor 13, and the processor 13 is configured to control the FFE equalizer 111 and the DFE equalizer 121 to process the high speed serial signal according to the control information separated by the splitter 15. .
  • both the interposer 14 and the splitter 15 can be implemented by hardware circuitry.
  • the transmitting end 2 is a communication device having the same structure as the receiving end 1, the serializer 11 of the receiving end 1 and the deserializer 12 of the transmitting end 2 are connected by a serial channel 3, and the serializer 11 and the receiving end of the transmitting end 2
  • the deserializer 12 of 1 is also connected through a serial channel 3.
  • both the receiving end 1 and the transmitting end 2 may include a plurality of pairs of serializers 11 and a deserializer 12, each pair of serializers 11 and deserializers 12 in the receiving end 1 and a pair in the transmitting end 2
  • the deserializer 12 and the serializer 11 are connected by a pair of serial channels 3.
  • the receiving end 1 and the transmitting end 2 are communication devices having the same structure, and the functions are also the same. They are not substantially different. In the embodiment, the receiving end can be sent in other embodiments. end.
  • the embodiment of the invention provides a method for processing a high-speed serial signal, which is executed by a receiving end.
  • the method includes:
  • Step S11 Receive a data stream sent by the sending end, where the data stream carries service data and control information, where the control information is used to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • control information may be carried in the control message (see Embodiment 3). In another implementation manner, the control information may be carried in the idle interval (see Embodiment 4).
  • control information is used to instruct the FFE equalizer of the receiving end to re-emphasize the high-speed serial signal to compensate for the transmission loss of the high-speed serial signal transmitted by the receiving end.
  • the control information may include: an adjustment command, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust the equalization state of the receiving end.
  • Step S12 Acquire control information in the data stream.
  • Step S13 performing high-speed serial signal pre-emphasis processing according to the acquired control information.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the invention provides a method for processing a high-speed serial signal, which is executed by a transmitting end.
  • the method includes:
  • Step S21 Generate a data stream, where the data stream carries service data and control information, where the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • control information may be carried in the control message (see Embodiment 3). In another implementation manner, the control information may be carried in the idle interval (see Embodiment 4).
  • control information is used to instruct the FFE equalizer of the receiving end to re-emphasize the high-speed serial signal to compensate for the transmission loss of the high-speed serial signal transmitted by the receiving end.
  • the control information may include: an adjustment command, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust the equalization state of the receiving end.
  • step S22 the data stream is sent to the receiving end.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the present invention provides a high-speed serial signal processing method, which is applicable to a high-speed cable or a printed circuit board backplane for transmitting an Ethernet message or the like.
  • the control information is carried in the control report.
  • the control packet has different identifiers from the service packets used to carry the service data, for example, different preambles or different virtual local area network (VLAN) labels.
  • VLAN virtual local area network
  • Step S31 The sending end generates a data stream, and carries a handshake message in the data stream, where the handshake message is used to verify whether the receiving end can identify the control message.
  • the data stream includes a plurality of service packets for carrying the service data, and the control packet carrying the handshake message in the data stream is inserted between the service packets.
  • this step S31 can be implemented by the inserter in FIG.
  • control information is carried in the control message.
  • the sending end Before the sending end sends the control message to the receiving end, it needs to verify whether the receiving end can identify the control message. If the receiving end can identify the control message, the sending end The control message carrying the control information is sent to the receiving end.
  • the handshake message may be carried in a packet (that is, a control packet) in which the preamble is a preset preamble, or the handshake message may be carried in a packet with a preset Vlan label, preset.
  • the preamble is different from the preamble of the service packet.
  • the preset Vlan label is different from the Vlan label of the service packet.
  • the receiving end can verify whether the receiving end can identify the control message by judging whether the handshake message can be identified.
  • Step S32 the sending end sends a data stream carrying the handshake message to the receiving end.
  • the transmitting end sends a data stream to the receiving end through the serializer.
  • Step S33 The receiving end sends a response message to the sending end, where the response message is used to indicate that the receiving end can identify the control message.
  • the receiving end when the receiving end can obtain the handshake message carried in the data stream, the receiving end can identify the control message and obtain the information therein, that is, the control packet carries the control information, and the receiving end sends the control information to the sending end. Send a response message. It is easy to know that if the receiving end cannot obtain the handshake message carried in the data stream, the response message will not be sent to the sender. Similarly, the response message may be carried in a data stream sent by the receiving end to the transmitting end.
  • Step S34 The receiving end sends an identifier to the transmitting end, where the identifier is used by the sending end to be carried in the control message.
  • the receiving end allocates an identification code to the transmitting end, and the identification code is used by the transmitting end to be carried in the control message, so that the receiving end can identify and receive the receiving message.
  • the incoming control message is sent by the sender.
  • the identifier may be carried in the response message sent by the receiving end to the sending end, or may be carried by a separate message.
  • Step S35 The transmitting end sends a data stream carrying control information to the receiving end, where the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the sending end after receiving the response message sent by the receiving end, the sending end carries the control information in the data stream and sends the control information to the receiving end.
  • the sending end may insert the control message carrying the control information into the service packet of the data stream by using the inserter. That is, the data stream includes a plurality of packets, and the plurality of packets include service packets carrying service data and control packets carrying control information.
  • the control packet carrying the control information may be a packet with a preset preamble, or may also be a packet with a preset Vlan label.
  • the control information is used to instruct the FFE equalizer of the receiving end to re-emphasize the high-speed serial signal to compensate for the transmission loss of the high-speed serial signal transmitted by the receiving end.
  • the control information may include: an adjustment instruction, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust the equalization state of the receiving end.
  • step S36 the receiving end acquires control information in the data stream.
  • step S36 when the carrying control information is a packet with a preset preamble, the foregoing step S36 can be implemented as follows:
  • the control information is obtained from the obtained control message.
  • each packet of the data stream is transmitted in a frame structure on the Ethernet.
  • the preset preamble may be AAAAAAAAAAAAD5, that is, the preamble of the control packet is set to AAAAAAAAAAAAD5, and the service report may also be
  • the preamble of the text is set to 55555555555D5, so that the splitter at the receiving end can conveniently separate the control message from the data stream and transmit it to the processor to obtain the control information carried in the control message.
  • step S36 when the control information is a packet with a preset Vlan label, the foregoing step S36 can be implemented as follows:
  • the Vlan label is a preset Vlan label
  • the preset Vlan label is used to indicate that the packet carrying the preset Vlan label is a control packet.
  • the control information is obtained from the obtained control message.
  • the Vlan label can be set in the control packet, and the Vlan label in the control packet can be identified by the splitter, so that the control packet can be conveniently separated from the data stream.
  • the Vlan tag can be set between the "Source Access Control Layer (“MAC") Address” and “Category/Length Field (Type/Len)” in the data frame of the Ethernet message. .
  • step S37 the receiving end performs pre-emphasis processing on the high-speed serial signal according to the acquired control information.
  • the receiving end sends the obtained control information to the FFE equalizer of the receiving end, and after receiving the control information, the FFE equalizer can re-adjust the pre-emphasis parameter according to the control information, and then re-send the receiving end.
  • the high-speed serial signal is pre-emphasized.
  • the control information may include: an adjustment command, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end.
  • the adjustment instruction is used to instruct the receiving end to adjust the pre-emphasis parameter of the FFE equalizer to re-emphasize the high-speed serial signal sent by the receiving end; the equalizing state of the transmitting end refers to using the equalization technique.
  • the EFE equalizer state of the transmitting end refers to the adjusting capability range of the DFE equalizer of the transmitting end when adjusting by the equalization technique.
  • the processor at the receiving end also acquires the equalization state of the FFE equalizer at the receiving end and the adjustment capability range of the FFE equalizer at the receiving end.
  • the processor at the receiving end first determines whether the execution of the adjustment instruction exceeds the adjustment capability range of the receiving end FFE equalizer. If the processor determines that the received adjustment command is executed, it will exceed the receiving end FFE. The range of the equalizer's adjustment capability, the processor will not execute the received adjustment command; if it is determined that the adjustment capability range of the receiver FFE equalizer is not exceeded, the processor executes the received adjustment command.
  • the equalization state of the FFE equalizer on the receiving end is +3, the adjustment capability of the FFE equalizer on the receiving end is -10 to +10, and the adjustment command indicates that the equalization state of the FFE equalizer is increased by 3, and then the FFE is executed after the adjustment instruction is executed.
  • the equalizer's equalization state is +6, which does not exceed the adjustment range of the FFE equalizer.
  • the processor at the receiving end executes the adjustment command.
  • the receiving end receives the adjustment command to indicate the adjustment made by the receiving end, and does not exceed the adjustment capability range of the receiving end FFE equalizer, the receiving end is based on the equalizing state of the DFE equalizer of the transmitting end and the adjusting capability of the DFE equalizer of the transmitting end. Range, it is judged whether the transmission loss of the high-speed serial signal after re-emphasis processing exceeds the adjustment capability range of the DFE equalizer of the transmitting end when transmitting to the transmitting end. If the judgment exceeds the adjustment capability range of the DFE equalizer on the transmitting end, the receiving end instructs the transmitting end to continue to send the control message. If the judgment does not exceed the adjustment capability range of the DFE equalizer of the transmitting end, the receiving end instructs the transmitting end to stop sending the control. Message.
  • the processor at the receiving end also acquires the equalization state of the DFE equalizer at the receiving end and the adjustment capability range of the DFE equalizer at the receiving end in real time, and detects the high-speed serial signal sent by the transmitting end when receiving the data stream sent by the transmitting end. Whether the transmission loss exceeds the adjustment capability range of the DFE equalizer at the receiving end. If it exceeds, the receiving end will according to the transmission loss condition of the high-speed serial signal, the adjustment capability range of the receiving DFE equalizer, and the DFE equalizer of the receiving end.
  • the balance state generates control information, and the generated control information is carried in the control message and sent to the transmitting end.
  • the receiving end and the transmitting end are devices having the same structure and function.
  • the receiving end can perform the functions of the sending end in the foregoing steps S31 to S37, and the transmitting end can perform the above steps S31 to S37.
  • the function of the receiving end is not limited here.
  • the method described in this embodiment is applicable to, but not limited to, the SerDes technology.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the present invention provides a high-speed serial signal processing method, which is applicable to a high-speed cable or a printed circuit board backplane for transmitting an Ethernet packet or the like.
  • the control information is carried in the data stream.
  • the gap between the business messages is in the gap. Referring to Figure 5, the method includes:
  • Step S41 The transmitting end generates a data stream, where the data stream carries service data and control information, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the data stream includes a service packet and an idle gap between the adjacent service packets, where the service data is carried in the service packet, and the control information is carried in the idle gap.
  • the service packets in the data stream are time-interval in the transmission process, and the idle gap is used to fill in the time intervals so that the data flow remains uninterrupted.
  • the idle gap can also be used to carry the control information.
  • the frame gap includes a minimum frame gap (including 12 characters), and the minimum frame gap can be used to carry control information. Specifically, the first 3 characters and the last 3 characters of the 12 characters can be reserved. Select the middle 6 characters to carry the control information.
  • the receiving end and the transmitting end perform link negotiation before establishing high-speed serial communication to determine a transmission rate, a transmission bandwidth, and the like between the transmitting end and the receiving end.
  • the sender and the receiver also negotiate whether the idle gap can be used to carry the control information.
  • the transmitting end and the receiving end respectively detect whether they have the function of carrying control information in the idle gap and whether the function is enabled, and interactively detect the result to determine whether the idle gap is used to carry the control information.
  • step S42 the transmitting end sends a data stream to the receiving end.
  • the sending end before transmitting the control information in the idle gap, the sending end sends a handshake message to the receiving end, where the handshake message is used to verify whether the receiving end can identify the control information in the idle gap, and the handshake message is carried in the data.
  • the idle gap of the stream If the receiving end can recognize the handshake message, it indicates that the receiving end can recognize the control information in the idle gap.
  • the response message is sent to the sending end, and the response message is also carried in the idle gap of the data stream sent by the receiving end to the sending end.
  • Step S43 After receiving the data stream, the receiving end acquires control information in the data stream.
  • the processor parses the idle gap in the data stream to obtain control information carried in the idle gap.
  • Step S44 the receiving end performs pre-emphasis processing on the high-speed serial signal according to the acquired control information.
  • control information includes: an adjustment instruction, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, where the adjustment instruction is used to instruct the receiving end to adjust the equalization state of the receiving end.
  • the process of performing the pre-emphasis processing on the transmitted high-speed serial signal is the same as that in the third embodiment, and details are not described herein again.
  • the receiving end and the transmitting end are devices having the same structure and function.
  • the receiving end can perform the functions of the sending end in the foregoing steps S41 to S44, and the transmitting end can perform the above steps S41 to S44.
  • the function of the receiving end is not limited here.
  • the method described in this embodiment is applicable to, but not limited to, the SerDes technology.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the present invention provides a high-speed serial signal processing device, which can be disposed in a receiving end, and is suitable for implementing the method provided in Embodiment 1.
  • the device includes: a receiving module 401, an obtaining module 402, and Processing module 403.
  • the receiving module 401 is configured to receive a data stream sent by the sending end, where the data stream carries service data and control information, where the control information is used to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the obtaining module 402 is configured to acquire control information in the data stream.
  • the processing module 403 is configured to perform pre-emphasis processing on the high-speed serial signal according to the acquired control information.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the present invention provides a high-speed serial signal processing device, which can be disposed in the receiving end, and is suitable for implementing the methods provided in Embodiments 1, 3, and 4.
  • the device includes: a receiving module 501, The module 502 is acquired, and the processing module 503.
  • the receiving module 501 is configured to receive a data stream sent by the sending end, where the data stream carries service data and control information, where the control information is used to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the obtaining module 502 is configured to acquire control information in the data stream.
  • the processing module 503 is configured to perform pre-emphasis processing on the high-speed serial signal according to the acquired control information.
  • the receiving module 501 can be a deserializer
  • the obtaining module 502 can be a splitter and a processor
  • the processing module 503 can be a deserializer
  • the data stream includes a plurality of packets, and the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control packet.
  • the obtaining module 502 includes: a message processing unit 512, a message acquiring unit 522, and a control information acquiring unit 532.
  • the message processing unit 512 is configured to parse each of the plurality of packets to obtain a preamble of each packet.
  • the packet obtaining unit 522 is configured to obtain a packet in which the preamble is a preset preamble in the plurality of packets, where the preset preamble is used to indicate that the packet carrying the preset preamble is a control packet.
  • the control information acquiring unit 532 is configured to obtain control information from the obtained control message.
  • each packet of the data stream is transmitted in a frame structure in the Ethernet, and the preset The preamble can be AAAAAAAAAAAAD5, that is, the preamble of the control packet is set to AAAAAAAAAAAAD5, and the preamble of the service packet can also be set to 55555555555555D5, so that the splitter at the receiving end can conveniently separate the control packet from the data stream. And transmit it to the processor to obtain the control information carried in the control message.
  • the packet processing unit 512 is further configured to parse each of the plurality of packets to obtain a Vlan tag of each packet.
  • the packet obtaining unit 522 is further configured to obtain a packet in which the Vlan label is a preset Vlan label, and the preset Vlan label is used to indicate that the packet carrying the preset Vlan label is a control packet.
  • the control information acquiring unit 532 is further configured to acquire control information from the acquired control message.
  • the Vlan label can be set in the control packet, and the Vlan label in the control packet can be identified by the splitter, so that the control packet can be conveniently separated from the data stream.
  • the Vlan tag can be set between the "send source MAC address" and the "category/length field (Type/Len)" in the data frame of the Ethernet message.
  • the message processing unit 512 and the message obtaining unit 522 may be splitters.
  • the data stream further carries a handshake message, where the handshake message is used to verify whether the receiving end can identify the control message.
  • the obtaining module 502 is further configured to acquire a handshake message in the data stream.
  • the device also includes:
  • the sending module 504 is configured to send a response message to the sending end, where the response message is used to indicate that the receiving end can identify the control message.
  • the handshake message may be carried in a packet (that is, a control packet) in which the preamble is a preset preamble, or the handshake message may be carried in a packet having a preset Vlan label.
  • the preamble is different from the preamble of the service packet.
  • the preset Vlan label is different from the Vlan label of the service packet.
  • the receiving end can verify whether the receiving end can identify the control message by judging whether the handshake message can be identified.
  • the sending module 504 can be a deserializer.
  • the sending module 504 is further configured to send an identifier to the sending end, where the identifier is used by the sending end to be carried in each packet of the data stream.
  • the receiving end allocates an identification code to the transmitting end, and the identification code is used by the transmitting end to be carried in the control message, so that the receiving end can identify and receive the receiving message.
  • the incoming control message is sent by the sender.
  • the data stream includes a service packet and an idle gap between the adjacent service packets, where the service data is carried in the service packet, and the control information is carried in the idle gap.
  • control information may be carried in the control message or in the idle gap.
  • the service packets in the data stream are time-interval in the transmission process, and the idle gap is used to fill in the time intervals so that the data flow remains uninterrupted.
  • the idle gap can also be used to carry the control information.
  • the frame gap includes a minimum frame gap (including 12 characters), and the minimum frame gap can be used to carry control information. Specifically, the first 3 characters and the last 3 characters of the 12 characters can be reserved. Select the middle 6 characters to carry the control information.
  • control information includes: an adjustment instruction, an equalization state of the transmitting end, and an adjustment capability range of the transmitting end, and the adjustment instruction is used to instruct the receiving end to adjust the equalization state of the receiving end.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the invention provides a high-speed serial signal processing device, which can be set at the transmitting end
  • the method provided in the second embodiment is applicable.
  • the device includes: a generating module 601 and a sending module 602.
  • the generating module 601 is configured to generate a data stream, where the data stream carries service data and control information, where the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the sending module 602 is configured to send a data stream to the receiving end.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the embodiment of the present invention provides a high-speed serial signal processing apparatus, which can be disposed in a transmitting end, and is suitable for implementing the methods provided in Embodiments 2, 3, and 4.
  • the apparatus includes: a generating module 701 and Send module 702.
  • the generating module 701 is configured to generate a data stream, where the data stream carries service data and control information, where the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end.
  • the sending module 702 is configured to send a data stream to the receiving end.
  • the generation module 701 can be a processor and an inserter.
  • the transmitting module 702 can be a serializer.
  • the data stream includes a plurality of packets, and the plurality of packets include a service packet and a control packet, where the service data is carried in the service packet, and the control information is carried in the control packet.
  • the data stream also carries a handshake message, and the handshake message is used to verify whether the receiving end can identify the control message.
  • the device Before transmitting the control message, the device further includes: a receiving module 703.
  • the receiving module 703 is configured to receive a response message sent by the receiving end, where the response message is used to indicate that the receiving end can identify the control message.
  • the handshake message may be carried in a packet whose preamble is a preset preamble (ie, In the control packet, the handshake message may be carried in the packet with the preset Vlan label.
  • the preset preamble is different from the preamble of the service packet, and the preset Vlan label and the Vlan label of the service packet are different.
  • the receiving end can verify whether the receiving end can identify the control message by judging whether the handshake message can be identified.
  • the receiving module 703 can be a deserializer.
  • the receiving module 703 is further configured to receive an identifier sent by the receiving end.
  • the sending module 702 is further configured to carry the identifier in the control packet and send the signal to the sending end.
  • the receiving end allocates an identification code to the transmitting end, and the identification code is used by the transmitting end to be carried in the control message, so that the receiving end can identify and receive the receiving message.
  • the incoming control message is sent by the sender.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • An embodiment of the present invention provides a high-speed serial signal processing apparatus.
  • the apparatus includes a processor 801, a memory 802, a bus 803, and a communication interface 804.
  • the memory 802 is used to store computer execution instructions
  • the processor 801 is connected to the memory 802 via a bus 803.
  • the processor 801 executes the computer execution instructions stored in the memory 802, so that the computer executes the first embodiment.
  • Embodiment 3 The method performed by the receiving end in Embodiment 4.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • This causes high-speed serialization when serial channel conditions change during high-speed serial communication.
  • the receiving end can obtain the control information from the data stream in real time to pre-emphasize the high-speed serial signal sent by the receiving end, so that the DFE equalizer of the transmitting end can be adjusted.
  • the ability is sufficient to adjust the received high-speed serial signal, which not only ensures the transmission quality of high-speed serial signals, but also ensures the reliability of service data transmission.
  • the embodiment of the present invention provides a high-speed serial signal processing apparatus.
  • the apparatus includes a processor 901, a memory 902, a bus 903, and a communication interface 904.
  • the memory 902 is used to store computer execution instructions
  • the processor 901 is connected to the memory 902 via a bus 903.
  • the processor 901 executes the computer execution instructions stored in the memory 902, so that the computer executes the second embodiment.
  • Embodiment 3 The method performed by the transmitting end in Embodiment 4.
  • the data stream carrying the control information sent by the sending end is received by the receiving end, and the control information is used to instruct the receiving end to perform pre-emphasis processing on the high-speed serial signal sent by the receiving end; and then acquiring the control information in the data stream; Finally, the high-speed serial signal is pre-emphasized according to the obtained control information.
  • the receiving end can obtain the control information from the data stream in real time.
  • the high-speed serial signal sent by the receiving end is pre-emphasized, so that the adjustment capability of the DFE equalizer at the transmitting end is sufficient to adjust the received high-speed serial signal, thereby ensuring the transmission quality of the high-speed serial signal and ensuring the service.
  • the reliability of data transmission is pre-emphasized.
  • the processing method of the high-speed serial signal is only exemplified by the division of each functional module, and in actual application, the above-mentioned The function assignment is done by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the processing device of the high-speed serial signal provided by the above embodiment is the same as the embodiment of the method for processing the high-speed serial signal. For the specific implementation process, refer to the method embodiment, and details are not described herein again.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

La présente invention appartient au domaine technique des communications en série, et ses modes de réalisation concernent un procédé et appareil de traitement de signal série à grande vitesse. Le procédé comporte les étapes consistant à: recevoir un flux de données émis par une extrémité d'émission, le flux de données transportant des données de service et des informations de commande qui sont utilisées pour donner comme consigne à une extrémité de réception de traiter le signal série à grande vitesse émis par l'extrémité de réception; obtenir les informations de commande figurant dans le flux de données; traiter le signal série à grande vitesse selon les informations de commande obtenues. Pendant la communication en série à grande vitesse dans les modes de réalisation de la présente invention, à l'aide des informations de commande obtenues à partir du flux de données, le signal série à grande vitesse émis par l'extrémité de réception peut être traité en temps réel. Lorsque le changement de l'état d'un canal série fait que l'affaiblissement de propagation du signal série à grande vitesse dépasse la plage de capacité de réglage d'un égaliseur DFE, le signal série à grande vitesse émis par l'extrémité de réception peut être traité en temps réel pour garantir la qualité d'émission du signal série à grande vitesse et pour garantir en outre la fiabilité d'émission des données de service.
PCT/CN2015/080929 2015-06-05 2015-06-05 Procédé et appareil de traitement de signal série à grande vitesse WO2016192112A1 (fr)

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CN201580001250.XA CN106797357B (zh) 2015-06-05 2015-06-05 高速串行信号的处理方法和装置

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CN107943627A (zh) * 2017-11-16 2018-04-20 郑州云海信息技术有限公司 一种10g‑kr高速信号优化方法与系统
CN113556633B (zh) * 2020-04-23 2024-04-09 华为技术有限公司 一种业务信号恢复方法、设备以及系统
CN111711459B (zh) * 2020-07-06 2021-08-31 中国科学院微电子研究所 一种发射机驱动均衡装置、发射机驱动均衡方法和电子设备

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