WO2015157993A1 - 互连系统、装置和数据传输方法 - Google Patents

互连系统、装置和数据传输方法 Download PDF

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Publication number
WO2015157993A1
WO2015157993A1 PCT/CN2014/075694 CN2014075694W WO2015157993A1 WO 2015157993 A1 WO2015157993 A1 WO 2015157993A1 CN 2014075694 W CN2014075694 W CN 2014075694W WO 2015157993 A1 WO2015157993 A1 WO 2015157993A1
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WO
WIPO (PCT)
Prior art keywords
data
switching node
packet
node
optical
Prior art date
Application number
PCT/CN2014/075694
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English (en)
French (fr)
Inventor
张学仓
郝沁汾
刘耀达
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP14889630.1A priority Critical patent/EP2981004B1/en
Priority to CN201480077899.5A priority patent/CN106464380B/zh
Priority to KR1020167031577A priority patent/KR101819410B1/ko
Priority to JP2016514255A priority patent/JP2016526328A/ja
Priority to ES14889630.1T priority patent/ES2660819T3/es
Priority to PCT/CN2014/075694 priority patent/WO2015157993A1/zh
Publication of WO2015157993A1 publication Critical patent/WO2015157993A1/zh
Priority to US14/928,661 priority patent/US9712901B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0071Provisions for the electrical-optical layer interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/74Address processing for routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0066Provisions for optical burst or packet networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0201Add-and-drop multiplexing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254Optical medium access
    • H04J14/0267Optical signaling or routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0037Operation
    • H04Q2011/0039Electrical control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0052Interconnection of switches
    • H04Q2011/0058Crossbar; Matrix
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0088Signalling aspects

Definitions

  • the present invention relates to the field of computer technologies, and in particular, to an interconnection system, apparatus, and data transmission method.
  • Opt i ca l Interconnect ion is an optical signal transmission method using optical waveguides (such as optical fibers) as a transmission medium, which has the advantages of low power consumption, small delay, and large bandwidth.
  • data in the form of an electrical signal transmitted by an interconnection end point in the optical interconnection network is converted into data in the form of an optical signal by the interface controller and sent to a switching node connected to the interface controller.
  • the optical signal is hop by hop by the switching node in the optical interconnection network to the interface controller to which the other interconnection endpoint is connected, and is converted to an electrical signal for transmission to the other interconnection endpoint.
  • the data in the form of optical signals cannot be directly parsed. It is necessary to convert the data into an electrical signal before it can be parsed to obtain the information included in the data. Therefore, each switching node on the transmission path needs to be paired first.
  • the data in the form of the received optical signal is photoelectrically converted, and then the routing information is obtained from the data in the form of the converted electrical signal and routed according to the routing information to determine the next hop, and then the data in the form of the electrical signal is electrically converted.
  • the data in the form of the converted optical signal is sent to the next hop, so there is a problem of additional delay and power consumption due to the electro-optical-to-electrical conversion.
  • the present invention provides an interconnection system, apparatus, and data transmission method to improve the efficiency of data transmission.
  • an interconnection system comprising: at least two interconnected endpoints, at least two interface controllers, and N switching nodes, N being a positive integer;
  • a first one of the interconnected endpoints is connected to a first one of the N switch nodes by a first interface controller of the interface controller, a second one of the interconnected endpoints Connecting the endpoint to the second switching node of the N switching nodes by using a second interface controller in the interface controller;
  • the first interconnecting end is configured to send data in the form of an electrical signal to the first interface controller;
  • the first interface controller is configured to convert the received data in the form of the electrical signal into an optical signal form a data packet, and a control packet for generating the data packet, wherein the control packet is in the form of an electrical signal and includes routing information of the data packet; and is further configured to send the control packet to the first switching node, and Transmitting the data packet to the first switching node after the interval offset time;
  • Any one of the N switching nodes configured to determine, according to the routing information of the data packet, a second neighboring node, when the control packet sent by the first neighboring node is received, where
  • the first adjacent node is specifically a switching node adjacent to the any switching node, or an interface controller connected to the any switching node, where the second neighboring node is specifically connected to any one of the switching nodes.
  • An adjacent switching node, or an interface controller connected to the any one of the switching nodes, is further configured to send the control packet to the second neighboring node when the second neighboring node is a switching node; Transmitting, on the any switching node, an optical path from a first optical port connected to the first neighboring node to a second optical port connected to the second adjacent node, and passing through the When the first optical port receives the data packet, the data packet is transmitted to the second optical port by using the optical path, and the second optical port is sent to the second adjacent node by using the optical port. data pack;
  • the second interface controller is configured to, when receiving the data packet sent by the second switching node, convert the data packet into data in the form of an electrical signal and send the data to the second interconnecting endpoint.
  • the first interface controller is specifically configured to perform converting the data into the light when determining that the data in the form of the electrical signal meets a preset condition A packet in the form of a signal and the operation of the control packet is generated.
  • the determining that the data in the form of the electrical signal meets a preset condition specifically includes determining a type of data in the form of the electrical signal For the preset type, or determining that the data in the form of the electrical signal is greater than a preset threshold, or determining that the type of the data in the form of the electrical signal is a preset type and the data in the form of the electrical signal is greater than a preset threshold.
  • the any one of the switching nodes is further configured to: according to the packet in the form of an electrical signal when receiving a packet in the form of an electrical signal sent by the first neighboring node
  • the information indicating the type of the packet determines whether the packet in the form of the electrical signal is a control packet, and when it is determined to be the control packet, performing the opening of the data packet in the form of the optical signal corresponding to the control packet The operation of the light path.
  • each of the at least two interconnected endpoints is specifically processed Or memory.
  • the routing information of the data packet includes a destination address of the data packet
  • the second neighboring node specifically includes:
  • the second aspect provides a switching node, including: a routing module and an optical switch module, where the routing module is configured to: when receiving a control packet in the form of an electrical signal sent by the first neighboring node, according to the control packet
  • the routing information is determined by the second neighboring node, where the routing information in the control packet is routing information of a data packet in the form of an optical signal corresponding to the control packet, where the first neighboring node is specifically exchanged with the a switching node adjacent to the node, or an interface control connected to the switching node
  • the second adjacent node is specifically a switching node adjacent to the switching node or an interface controller connected to the switching node; and is also used when the second neighboring node is a switching node Transmitting the control packet to the second neighboring node, and instructing the optical switch module to open a data packet in the form of an optical signal corresponding to the control packet from a first optical port of the switching node to the switching node
  • the optical switch module is configured to open the optical path according to the indication of the routing module, and to transmit the data packet to the office through the optical path when the data packet is received by the first optical port
  • the second optical port is configured to send the data packet to the second neighboring node by using the second optical port.
  • the routing module is further configured to: when receiving a packet in the form of an electrical signal sent by the first neighboring node, according to the packet in the form of the electrical signal Determining, by the information indicating the type of the packet, whether the packet in the form of the electrical signal is a control packet, and indicating that the optical switch module is a data packet in the form of the optical signal corresponding to the control packet when determining that the control packet is a control packet Open the light path.
  • the interconnecting endpoint is specifically a processor or a memory;
  • the routing information of the data packet includes the data The destination address of the package;
  • the second neighboring node specifically includes:
  • an interface controller including: a receiving unit and a processing unit; the receiving unit is configured to receive data in the form of an electrical signal sent by an interconnecting endpoint connected to the interface controller, and receive Data transfer to the processing unit;
  • the processing unit is configured to receive the data from the receiving unit, convert the data into a data packet in the form of an optical signal, and generate a control packet of the data packet, where the control packet is in the form of an electrical signal and And including the routing information of the data packet; and is further configured to send the control packet to a switching node that is connected to the interface controller, and send the data packet to the switching node after an interval offset time, so as to:
  • the switching node receives the control packet and determines a next hop according to the routing information of the data packet included in the control packet, the switching node opens an open connection with the access controller on the switching node. An optical path of the optical port to the optical port connected to the next hop for transmitting the data packet, and transmitting the data in the form of the optical signal through the optical path when receiving the data packet in the form of the optical signal package.
  • the processing unit is specifically configured to perform converting the data into the optical signal form when determining that the data in the form of the electrical signal satisfies a preset condition
  • the packet is generated and the operation of the control packet is generated.
  • the processing unit is specifically configured to determine, according to the type of the electrical signal, a type of data, or determine a location
  • the processing unit is specifically configured to determine, according to the type of the electrical signal, a type of data, or determine a location
  • the processing unit is specifically configured to determine, according to the type of the electrical signal, a type of data, or determine a location
  • the data in the form of the electrical signal is greater than a preset threshold, or when the type of the data in the form of the electrical signal is determined to be a preset type and the data in the form of the electrical signal is greater than a preset threshold
  • performing the conversion of the data into the A packet in the form of an optical signal is described and the operation of the control packet is generated.
  • a fourth aspect provides a switching node, including: a processor, a memory, and an optical switch; and the memory is configured to store a computer operating instruction;
  • the processor configured to execute a computer operation instruction stored in the memory, so that the exchange
  • the node implements the following operations:
  • the first neighboring node When receiving the control packet in the form of an electrical signal sent by the first neighboring node, determining a second neighboring node according to the routing information in the control packet, where routing information in the control packet is corresponding to the control packet
  • the routing information of the data packet in the form of an optical signal, the first neighboring node is specifically a switching node adjacent to the switching node, or an interface controller connected to the switching node, the second neighboring node Specifically, a switching node adjacent to the switching node or an interface controller connected to the switching node;
  • the optical switch is configured to transmit the data packet to the second optical port through the optical path when receiving the data packet by using the first optical port, and pass the second optical port to The second neighboring node sends the data packet.
  • the interconnecting endpoint is specifically a processor or a memory;
  • the routing information of the data packet includes a destination address of the data packet;
  • the optical port to which the next hop adjacent switching node is connected is not occupied, and the neighboring switching node is determined as the second neighboring node if the switching node and all neighboring exchanges as alternative next hops
  • the optical ports of the nodes are all occupied, and when it is determined that there is free memory connected to the switching node through the interface controller, the interface controller is determined as the second adjacent node.
  • the processor executing the computer operation instruction further causes the switching node to perform an operation of: according to the packet in the form of an electrical signal when receiving a packet in the form of an electrical signal transmitted by the first neighboring node
  • the information indicating the type of the packet determines whether the packet in the form of the electrical signal is a control packet, and when it is determined to be the control packet, opens the optical path for the data packet in the form of the optical signal corresponding to the control packet .
  • an interface controller including: a processor and a memory;
  • the memory is configured to store computer operation instructions
  • the processor is configured to execute a computer operation instruction stored in the memory, so that the interface controller implements the following operations:
  • the executing the computer operation instruction by the processor specifically, the interface controller to perform the following operations: Determining that the type of the data in the form of the electrical signal is a preset type, or determining that the data in the form of the electrical signal is greater than a preset threshold, or determining that the type of data in the form of the electrical signal is a preset type and the electrical signal When the form of the data is greater than the preset threshold, performing an operation of converting the data into a data packet in the form of the optical signal and generating the control packet.
  • an access switching node including:
  • An access controller implemented as in the third aspect, the first or second possible implementation of the third aspect, or the first or second possible implementation of the fifth aspect, the fifth aspect Access controller
  • an access interconnection endpoint is provided, including:
  • a data transmission method including:
  • the switching node When receiving the control packet in the form of an electrical signal sent by the first neighboring node, the switching node determines the second neighboring node according to the routing information in the control packet, where the routing information in the control packet is the control a routing information of a data packet in the form of an optical signal corresponding to the packet, where the first neighboring node is specifically a switching node adjacent to the switching node, or an interface controller connected to the switching node, the second phase
  • the neighboring node is specifically a switching node adjacent to the switching node or an interface controller connected to the switching node; Transmitting, by the switching node, the control packet to the second neighboring node;
  • the method further includes: when the switching node receives the packet in the form of an electrical signal sent by the first neighboring node, according to the packet in the form of the electrical signal The information indicating the type of the packet determines whether the packet in the form of the electrical signal is a control packet, and when it is determined to be the control packet, performing the opening of the data packet in the form of the optical signal corresponding to the control packet The operation of the light path.
  • the interconnecting endpoint is specifically a processor or a memory;
  • the routing information of the data packet includes the data The destination address of the package;
  • the second neighboring node specifically includes:
  • a data transmission method including: An interface controller receives data in the form of an electrical signal transmitted by an interconnect endpoint connected to the interface controller;
  • the interface controller converts the data into a data packet in the form of an optical signal, and generates a control packet of the data packet, wherein the control packet is in the form of an electrical signal and includes routing information of the data packet;
  • the controller sends the control packet to a switching node connected to the interface controller, and sends the data packet to the switching node after an interval offset time, so that: the switching node receives the control And determining, according to the routing information of the data packet included in the control packet, opening an optical port connected to the access controller to the next hop on the switching node
  • the optical port of the optical port is configured to transmit the optical path of the data packet, and when the data packet in the form of the optical signal is received, the data packet in the form of the optical signal is transmitted through the optical path.
  • the interface controller performs, when determining that the data in the form of the electrical signal meets a preset condition, converting the data into a data packet in the form of the optical signal and The operation of generating the control packet.
  • the determining that the data in the form of the electrical signal meets a preset condition specifically includes determining a type of data in the form of the electrical signal For the preset type, or determining that the data in the form of the electrical signal is greater than a preset threshold, or determining that the type of the data in the form of the electrical signal is a preset type and the data in the form of the electrical signal is greater than a preset threshold.
  • data to be transmitted is converted into a data packet in the form of an optical signal for transmission, and a control packet corresponding to the data packet is transmitted in the form of an electrical signal and includes routing information of the data packet, when passing through the switching node,
  • the switching node directly determines the neighboring node as the next hop according to the routing information in the control packet, and opens an optical path in the switching node for transmitting the data packet to transmit the data packet. Since the control packet and the data packet do not need to be optical-electrical, electro-optic, or the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data.
  • the efficiency of the transmission since the control packet and the data packet do not need to be optical-electrical, electro-optic, or the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data. The efficiency of the transmission.
  • FIG. 1 is a schematic structural diagram of an interconnection system according to Embodiment 1 of the present invention.
  • FIG. 2a is a schematic diagram of a connection manner between an interconnection endpoint, an interface controller, and a switching node in an interconnection system according to Embodiment 1 of the present invention
  • FIG. 2b is a schematic diagram showing a connection manner between switching nodes in an interconnection system according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic structural diagram of an interconnection system 100 according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of an optical path opened on a switching node according to Embodiment 1 of the present invention
  • Figure 6-1 and Figure 6-2 show the structure of the optical switch of the switching node 200 according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram of a switching node 300 according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of an interface controller 400 according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic structural diagram of an interface controller 500 according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic structural diagram of an access switching node 600 according to Embodiment 6 of the present invention
  • FIG. 11 is a schematic structural diagram of an access interconnection endpoint 700 according to Embodiment 7 of the present invention
  • FIG. 13 is an interaction flowchart of a data transmission method according to Embodiment 9 of the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of an interconnection system 100 according to Embodiment 1 of the present invention.
  • the interconnection system 100 includes: an interconnection endpoint 1 10, an interface controller 120, and a switching node 130.
  • the interconnect endpoint (such as 110(A) of FIG. 1) is connected to the corresponding switching node (such as switching node 130 (A) of FIG. 1) through a corresponding interface controller (such as 120 (A) of FIG. 1).
  • the connection mode can be as shown in FIG. 2a, the electrical port of the interconnection end point and the electrical port of the interface controller are connected through the electrical interconnection 141, and the other electrical port of the interface controller and the electrical port of the switching node pass through the electrical interconnection 141.
  • the optical port of the interface controller and the optical port of the switching node are connected by an optical waveguide 142.
  • the interconnection endpoint, the interface controller, and the switching node shown in Figure 2a can be implemented on different physical entities respectively, or the interconnection endpoint and the interface controller can be integrated together, and the interface controller and the interface controller can also be The switching nodes are integrated.
  • the electrical ports of adjacent switching nodes in interconnect system 100 are connected by electrical interconnects 141, and the optical ports of adjacent switching nodes are connected by optical waveguides 142.
  • the electrical interconnections 141 in the interconnection system 100 are used to transmit electrical signals, which may be copper wires, nanowires, etc.; the optical waveguides 142 are used to transmit optical signals, which may be optical fibers (such as optical fibers, optical cables), thin film waveguides, and tapes. Waveguides, etc.
  • the switching nodes of the interconnection system 100 are connected by a network topology such as an MESH (grid) topology and a Torus topology.
  • the switching nodes and the electrical interconnections connecting the switching nodes form an electrical network as a whole; the switching nodes are connected by a network topology through optical waveguides, and the switching nodes and the optical waveguides connecting the switching nodes form an optical network as a whole.
  • a network topology such as an MESH (grid) topology and a Torus topology.
  • the network topology of the electrical network and the network topology of the optical network may be the same or different.
  • the interconnection system 100 may specifically be an inter-board interconnection system, and correspondingly, the interconnection endpoint 100 is specifically a server or the like.
  • the interconnect system 100 may also specifically be an inter-chip interconnect system, as shown in FIG. 3, and correspondingly, the interconnect end point 100 is specifically a processor 111 or a memory 112.
  • the processor 111 may be a central processing unit (CPU), an integrated circuit (ASIC), or the like.
  • the memory 112 may specifically be a high speed RAM memory, a non-volatile memory (non-vo latile memory) or the like.
  • the specific functional implementation of the interconnect endpoints, interface controllers, and switch nodes in the interconnect system 100 is described below in conjunction with FIG.
  • a first interconnect endpoint (e.g., 1 11-1 ) in interconnect endpoint 110 is coupled to a first switch node in switch fabric 1 30 via a first interface controller (e.g., 120-1) in interface controller 120 ( Such as switching node 1).
  • a first interface controller e.g., 120-1
  • interface controller 120 Such as switching node 1).
  • a second interconnect endpoint (e.g., 1 12-5) in interconnect endpoint 110 is coupled to a second switch node in switch fabric 1 30 via a second interface controller (e.g., 120-5) in interface controller 120 ( Such as switching nodes 5).
  • the second switching node and the first switching node may be the same or different.
  • the first interconnecting endpoint is configured to send data in the form of an electrical signal to the first interface controller.
  • the first interconnect endpoint is a processor that is to transfer data to another processor in the interconnect system 100, or to write data to a memory in the interconnect system 100 (eg, the processor 111-1 is to be 112-5 write data), as another example, the first interconnect endpoint is a memory, and a processor in the interconnect system 100 reads data from the memory, and the first interconnect endpoint first refers to the first An interface controller sends the data.
  • the first interface controller is configured to convert the received data in the form of the electrical signal into a data packet in the form of an optical signal, and generate a control packet of the data packet in the form of the optical signal, where the control packet is
  • the signal form includes the routing information of the data packet; and is further configured to send the control packet to the first switching node, and send the data packet to the first switching node after an interval offset time.
  • the offset time may be determined according to an empirical value, test data, or the like, as long as the determined offset time can ensure that the data packet in the form of the optical signal corresponding to the control packet arrives later than the control packet.
  • the same switching node can be used.
  • the routing information includes a destination address of the data packet, and may further include information such as a priority of the data packet.
  • a specific implementation of converting the data in the form of the electrical signal into a data packet in the form of an optical signal may be
  • the data in the form of an electrical signal is encapsulated into a data packet in the form of an electrical signal, and the data packet in the form of an electrical signal is converted into a data packet in the form of an optical signal by electro-optical conversion.
  • the data packet is specifically a burst packet.
  • the converted data packets may be one or more, and the first interface controller may generate a corresponding control packet for each data packet.
  • the first interface controller may convert the data in the form of an electrical signal to a data packet in the form of an optical signal and generate a control packet corresponding to the data packet each time the data in the form of an electrical signal transmitted by the first interconnecting endpoint is received. And sent to the first switching node regardless of the attributes of the data (such as the type and size of the data).
  • the first interface control may also determine, when the data in the form of an electrical signal is received from the first interconnecting endpoint, whether the data meets a preset condition, and when determining that the data meets a preset condition, performing the Converting data into data packets in the form of optical signals and generating corresponding control packets. For data that does not satisfy the preset conditions, the data may be directly transmitted to the The first switching node.
  • the specific judgment method may be: determining whether the type of the data is a preset type, and if it is a preset type, performing an operation of converting the data into a data packet in the form of an optical signal and generating a corresponding control packet.
  • the electrical interconnection between the interconnect endpoint and the interface controller generally includes multiple pin lines, such as data lines, address lines, control lines, power lines, clock lines, etc., and different types of pins are transmitted through different pin lines.
  • the first interface controller may determine the type of the data according to the pin line transmitting the data, thereby determining whether the data is a preset type of data, and if so, An operation of converting the data into a packet in the form of an optical signal and generating a corresponding control packet is performed.
  • the specific judgment method may further be: determining whether the data is greater than a preset threshold, and if so, performing an operation of converting the data into a data packet in the form of an optical signal and generating a corresponding control packet.
  • the data may be combined with the type and size of the data, for example, determining whether the type of the data is a preset type and whether the data is greater than a preset threshold, if the data is a preset type. And greater than the preset threshold, an operation of converting the data into a data packet in the form of an optical signal and generating a corresponding control packet is performed.
  • any one of the switching nodes 1 30 (such as switching node 1, switching node 2, for convenience of description, hereinafter referred to as the current switching node), for receiving the control packet sent by the first neighboring node Determining, according to the routing information of the data packet included in the control packet, such as a destination address, a priority, and the like of the data packet, where the first neighboring node is specifically exchanged with the current a switching node adjacent to the node or an interface controller connected to the current switching node, where the second neighboring node is specifically a switching node adjacent to the current switching node or an interface controller connected to the current switching node; Transmitting the control packet to the second neighboring node when the second neighboring node is a switching node adjacent to the current switching node, where the data packet corresponding to the control packet is in the switching node Opening an optical path from a first optical port connected to the first neighboring node to a second optical port connected to the second adjacent node, and receiving the data packet through the first optical port And transmitting,
  • 4-1 is the first optical port
  • 4-2 is the second optical port
  • 4-3 is an open optical path from the first optical port to the second optical port.
  • the current switching node may specifically determine, when determining the neighboring switching node that is the candidate next hop according to the routing algorithm, the light that is connected between the current switching node and the neighboring switching node. Whether the port is in an idle state, and determining that the switching node is the second neighboring node when it is determined to be in an idle state, and setting the state of the optical port to an occupied state.
  • the current switching node is further configured to reset the state of the optical port to an idle state after transmitting the data packet in the form of the optical signal.
  • the current switching node may send the control packet to the The interface controller can also be discarded directly. If the current switching node will use the control packet Sending to the interface controller, the interface controller may directly discard the control packet when it determines that the control packet is received.
  • a packet in the form of an electrical signal transmitted between each node may be a control packet, or may include both a control packet and other types of packets, preferably, the current exchange.
  • the node may further determine, according to the information indicating the type of the packet in the packet, whether the packet is a control packet, and determine that the control is The operation of opening the optical path for the data packet corresponding to the control packet is performed at the time of the packet.
  • the switch node in the interconnect system is connected to the memory through the interface controller, the switch node can use the connected memory as a cache of the switch node, correspondingly
  • the data packet to be transmitted may be stored into the memory by the interface controller. (ie, use the interface controller as the next hop).
  • the implementation manner of determining, by the current switching node, the second neighboring node according to the routing information in the control packet is: determining, according to the destination address of the data packet included in the control packet, the correspondence of the control packet Whether the destination of the data packet is an interconnection endpoint connected to the switching node through an interface controller, and if so, determining the interface controller as the second neighboring node, otherwise determining according to a routing algorithm as an alternative a neighboring switching node of the next hop, if the optical port connected to the neighboring switching node that is the alternate next hop is not occupied (ie, in an idle state), the neighboring switching node is determined to be a second neighboring node, if the optical port of the switching node and all neighboring switching nodes that are alternate next hops are occupied (ie, both are in an occupied state), determining that there is an interface connected to the When the node's free memory is swapped, the interface controller is determined to be the second neighboring node.
  • the first neighboring node is the first interface controller; when the current switching node is the second switching node, the second neighboring node is The second interface controller.
  • the first neighboring node of the switching node 1 is the interface controller 120-1 (ie, the first Interface controller)
  • the second adjacent node is switching node 2; the first neighbor of switching node 2
  • the node is a switching node 1, the second neighboring node is a switching node 5; the first neighboring node of the switching node 5 (ie, the second switching node) is a switching node 2, and the second neighboring node is an interface controller 120- 5 (ie the second interface controller).
  • the second controller is configured to, when receiving the data packet sent by the second switching node, convert the data packet into data in the form of an electrical signal and send the data to the second interconnecting endpoint.
  • the transmission path of the data packet and the control packet is the switching node 1, the switching node 2, and the switching node 5, and the switching node 5 is the second switching node, and the interface controller 120 connected to the switching node 5 -5 is the second interface controller.
  • the second interconnected endpoint may be a predetermined destination of the data (ie, a destination corresponding to the destination address carried in the control packet), or may be a temporarily determined destination of the data.
  • the predetermined destination of the data is a third interconnect endpoint (such as the memory 112-9).
  • the switching node 5 determines that the optical port connected to the three alternative next hops is occupied, the The data packet corresponding to the control packet opens the optical path to the next switching node, and the switching node 5 opens the optical path from the optical port connected to the switching node 2 to the optical port connected to the interface controller 120-5, and passes and exchanges
  • the optical port connected to the node 2 receives the data packet, the data packet is sent to the interface controller 120-5 (ie, the second interface controller) through the opened optical path, and the interface controller 120- 5
  • the data packet is converted into an electric signal in the form of data stored in the memory 112-5 (i.e., the second interconnection end) of.
  • the second interconnect endpoint (ie, a memory connected to the second interface controller) when storing data in the form of electrical signals
  • the address storing the data is sent by the second interface controller to a processor (e.g., all processors in the interconnect system 100) that are likely to read the data.
  • a processor e.g., all processors in the interconnect system 100
  • the multiple interconnects may be connected to the switching node through an interface controller respectively, or may be connected to the switching node through the same interface controller, or a partial interconnecting endpoint may be connected to the switching through an interface controller.
  • a node, a partially interconnected endpoint is connected to the switching node through another interface controller.
  • interconnect system 100 when the interconnect system 100 is an inter-chip interconnect system, multiple processors and/or multiple memories can be connected to the same switching node.
  • Each processor connected to the same switching node can be located on a different PCB (Pr inted Circui t Board, printed circuit board), server chassis or even different machines.
  • the individual memories connected to the same switching node can also be located on different PCB boards, server chassis or even different machines.
  • multiple processors can be connected to the switching node through different interface controllers, or can be connected to the switching node through the same interface controller.
  • the interface controller and the switching node transmit multiple processors and the exchange through the optical waveguide between the interface controller and the switching node by using wavelength division multiplexing technology
  • multiple processors can be connected to a sub-network (such as a ring network) through electrical ports, so that multiple processors communicate directly through the sub-network.
  • the plurality of memories When a plurality of memories are connected to the switching node, the plurality of memories may be connected to the switching node through different interface controllers, or may be connected to the switching node through the same interface controller.
  • multiple memories are connected to the switching node in a fat tree structure, wherein each memory is a leaf node of the fat tree structure, and the switching node is the fat tree The root node of the shape structure.
  • a second embodiment of the present invention provides a switching node 200, including: a processor 210, a memory 220, and an optical switch 230.
  • the processor 210, the memory 220, and the optical switch 230 can be connected by a bus.
  • the memory 220 is configured to store computer operation instructions.
  • the memory 220 may include a high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
  • the processor 210 is configured to execute computer operation instructions stored in the memory 420.
  • the processor 210 may specifically be a central processing unit (CPU, centra l proces s ing uni t ), which is a computer core unit.
  • the processor 210 executes the computer operation instructions to cause the switching node 200 to perform the following operations:
  • the first neighboring node When receiving the control packet in the form of an electrical signal sent by the first neighboring node, determining a second neighboring node according to the routing information in the control packet, where routing information in the control packet is corresponding to the control packet
  • the routing information of the data packet in the form of an optical signal, the first neighboring node is specifically a switching node adjacent to the switching node, or an interface controller connected to the switching node, the second neighboring node Specifically, a switching node adjacent to the switching node or an interface controller connected to the switching node;
  • the first optical port of the optical switch 230 is connected to the optical port of the first adjacent node, and the second optical of the optical switch 230 The port is connected to the optical port of the second adjacent node.
  • the routing information includes a destination address of the data packet, and may further include information such as a priority of the data packet.
  • the interconnect endpoint may specifically be a processor or a memory.
  • the executing the computer operation instruction by the processor 210 may specifically enable the switching node 200 to: determine, according to the destination address, whether the destination of the data packet in the form of the optical signal is through a port controller is connected to the interconnecting endpoint of the switching node, and if so, determining the interface controller as the second neighboring node; otherwise, determining a neighboring switching node as an alternate next hop according to a routing algorithm And if the switching node is not occupied by an optical port connected to the neighboring switching node that is the candidate next hop, determining the neighboring switching node as the second neighboring node, if the switching node and all An optical port of an adjacent switching node that is an alternate next hop is occupied, and when it is determined that there is a free memory connected to the switching node by the interface controller, the interface controller is determined to be the second neighbor node.
  • the optical switch 230 is configured to: when the data packet is received by using the first optical port, transmit the data packet to the second optical port by using the optical path, and pass through the second optical port The second neighboring node sends the data packet.
  • the optical switch 230 may specifically be a T-ring, an MZI (Mach Zehnder Interferometer), a S0A (semiconductor optical amplifier),
  • Switches such as MEMS (Micro Electro Mechanical systems).
  • the optical switch 230 is a 6 x 6 bidirectional optical switch composed of an optical waveguide and a micro ring (MR as shown in FIG. 6-1), and has 6 optical ports (Eas t , South, We st, Nor th, Eject ion/ Inject ion, Up/Down ), each optical port is bidirectional.
  • each microring The opening state control of each microring is shown in Figure 6-2.
  • the dotted line shows the transmission direction when the microring is in the off state, and the solid line shows the transmission direction when the microring is in the on state.
  • the processor 210 can specifically open the optical path between the two ports of the optical switch 230 by executing the computer operation instructions to control the switching states of the respective micro-rings in the optical switch 230. As shown in Figure 6-1, to open the optical path from optical port West to optical port Up/Down, you can control to close the No. 1 micro ring, open the No. 1 micro ring, and close the No. 3 and No. 4 micro ring.
  • the processor 210 executing the computer operation instruction may further enable the switching node 200 to perform the following operations: when receiving the packet in the form of an electrical signal sent by the first neighboring node, according to the packet in the form of the electrical signal
  • the information indicating the type of the packet determines whether the packet in the form of the electrical signal is a control packet, and when it is determined to be the control packet, opens the optical path for the data packet in the form of the optical signal corresponding to the control packet.
  • the switching node 200 provided in Embodiment 2 may be any one of the interconnection systems 100 provided in Embodiment 1, and any one of the interconnection systems 100 provided in Embodiment 1 may be exchanged by Embodiment 2.
  • the implementation of node 200 is implemented.
  • the control packet received by the switching node is in the form of an electrical signal, and the routing information of the data packet in the form of an optical signal corresponding to the control packet may be directly performed according to the routing information in the control packet.
  • the route is determined to be the next hop neighbor node, and an optical path for transmitting the data packet in the form of the optical signal is opened on the switching node to transmit the data packet. Since the control packet and the data packet do not need to be optical-electrical or electro-optic converted during the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data. The efficiency of the transmission.
  • Embodiment 3 of the present invention provides a switching node 300, including: a routing module 310 and an optical switch module 320.
  • the routing module 310 is configured to: when receiving the control packet in the form of an electrical signal sent by the first neighboring node, determine, according to routing information in the control packet, a second neighboring node, where The routing information is routing information of a data packet in the form of an optical signal corresponding to the control packet, where the first neighboring node is specifically a switching node adjacent to the switching node 300 or an interface controller connected to the switching node 300.
  • the second adjacent node is specifically a switching node adjacent to the switching node 300 or an interface controller connected to the switching node 300; and is further configured to exchange the second adjacent node with the switching node And sending, by the node, the control packet to the second neighboring node, and instructing the optical switch module 320 to open the data packet in the form of an optical signal corresponding to the control packet from the first optical port of the switching node 300 to the switching node 300.
  • An optical path of the second optical port, the first optical port of the switching node 300 is connected to the optical port of the first adjacent node, and the second optical port of the switching node 300 is connected to the second adjacent node Optical port.
  • the routing information includes a destination address of the data packet, and may further include information such as a priority of the data packet.
  • the interconnect endpoint may specifically be a processor or a memory.
  • the routing module 310 may specifically determine, according to the destination address, whether a destination of the data packet in the form of the optical signal is an interconnection endpoint connected to the switching node by using an interface controller, and if yes, determining the interface controller as The second neighboring node, otherwise, determines a neighboring switching node as an alternate next hop according to a routing algorithm, if the optical port connected to the neighboring switching node that is the alternate next hop is not occupied Determining, by the neighboring switching node, the second neighboring node, if the optical port of the switching node and all neighboring switching nodes that are alternate next hops are occupied, determining that there is an interface controller When connected to the free memory of the switching node, the interface controller is determined to be the second neighboring node.
  • the optical switch module 320 is configured to open the optical path according to the indication of the routing module 310, and configured to transmit, by using the optical path, the data packet to the first path when the data packet is received by the first optical port a two optical port, and sending the data packet to the second neighboring node by using the second optical port.
  • the routing module 310 is further configured to: when receiving the packet in the form of an electrical signal sent by the first neighboring node, determine the electrical signal form according to information in the packet in the form of the electrical signal indicating the type of the packet. Whether the packet is a control packet, and when it is determined that the packet is a control packet, the optical switch module 320 is instructed to open the optical path for the data packet in the form of the optical signal corresponding to the control packet.
  • the switching node 300 provided in Embodiment 3 may be any one of the interconnection systems 100 provided in Embodiment 1, and any one of the interconnection systems 100 provided in Embodiment 1 may be exchanged by Embodiment 2. The implementation of node 300 is implemented.
  • the control packet received by the switching node is in the form of an electrical signal, and the routing information of the data packet in the form of an optical signal corresponding to the control packet may be directly performed according to the routing information in the control packet.
  • the route is determined to be the next hop neighbor node, and an optical path for transmitting the data packet in the form of the optical signal is opened on the switching node to transmit the data packet. Since the control packet and the data packet do not need to be optical-electrical or electro-optic converted during the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data. The efficiency of the transmission.
  • Embodiment 4 of the present invention provides an interface controller 400, including: a processor 410 and a memory 420, wherein the processor 410 and the memory 420 are connected by a bus.
  • the memory 420 is configured to store computer operation instructions.
  • Memory 420 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
  • the processor 410 is configured to execute computer operation instructions stored in the memory 420.
  • the processor 410 may specifically be a central processing unit (CPU, centra l proces s ing uni t ), which is a computer core unit.
  • the processor 410 executes the computer operation instruction to cause the interface controller 400 to perform the following operations:
  • the processor 410 executing the computer operation instruction may specifically cause the interface controller 400 to perform the following operations: when determining that the data in the form of the electrical signal satisfies a preset condition, performing conversion of the data into the optical signal form The data packet and the operation of the control packet.
  • Determining that the data in the form of the electrical signal meets the preset condition comprises: determining that the type of the data in the form of the electrical signal is a preset type, or determining that the data in the form of the electrical signal is greater than a preset threshold, or determining the location
  • the type of data in the form of an electrical signal is of a preset type and the data in the form of the electrical signal is greater than a preset threshold.
  • the interface controller 400 provided in Embodiment 4 may be in the interconnection system 100 provided in Embodiment 1. Any of the interface controllers, any of the interconnect systems 100 provided in Embodiment 1 can be implemented by the implementation of the interface controller 400 provided in Embodiment 4.
  • the interface controller 400 provided in Embodiment 4 may be any one of the interconnection systems 100 provided in Embodiment 1. Any one of the interconnection systems 100 provided in Embodiment 1 may pass Embodiment 4 The implementation of the provided interface controller 400 is implemented.
  • the interface controller 400 converts data in the form of an electrical signal transmitted by the interconnection endpoint into a data packet in the form of an optical signal, and generates control of an electrical signal form including routing information of the data packet.
  • the packet is sent to the switching node, and the data packet in the form of the optical signal is sent to the switching node after the interval offset time. Therefore, the switching node can directly perform routing according to the routing information in the control packet to determine the next hop. And opening an optical path in the switching node for transmitting the data packet to transmit the data packet.
  • Embodiment 5 of the present invention provides an interface controller 500, including: a receiving unit 510 and a processing unit 520.
  • the receiving unit 510 is configured to receive data in the form of an electrical signal sent by the interconnecting endpoint connected to the interface controller, and transmit the received data to the processing unit 520, where the interconnecting endpoint may specifically be a processor or Memory.
  • the processing unit 520 is configured to receive the data from the receiving unit 510, convert the data into a data packet in the form of an optical signal, and generate a control packet of the data packet, where the control packet is in the form of an electrical signal and includes
  • the routing information of the data packet is further configured to send the control packet to a switching node connected to the interface controller, and send the data packet to the switching node after an interval offset time, so as to:
  • the switching node When the switching node receives the control packet and determines the next hop according to the routing information of the data packet included in the control packet, the switching node opens an optical port connected to the access controller on the switching node.
  • the processing unit 520 may be specifically configured to: when determining that the data in the form of the electrical signal satisfies a preset condition, for example, determining that the type of the data in the form of the electrical signal is a preset type, or determining data in the form of the electrical signal When the value of the data in the form of the electrical signal is a preset type and the data in the form of the electrical signal is greater than a preset threshold, performing conversion of the data into data in the form of the optical signal is performed. The operation of the package is generated and generated.
  • the interface controller 500 provided in Embodiment 5 may be any one of the interconnection systems 100 provided in Embodiment 1. Any one of the interconnection systems 100 provided in Embodiment 1 may pass Embodiment 5 The implementation of the provided interface controller 500 is implemented.
  • the interface controller 500 converts data in the form of an electrical signal transmitted by the interconnection endpoint into a data packet in the form of an optical signal, and generates control of an electrical signal form including routing information of the data packet.
  • the packet is sent to the switching node, and the data packet in the form of the optical signal is sent to the switching node after the interval offset time. Therefore, the switching node can directly perform routing according to the routing information in the control packet to determine the next hop. And opening an optical path in the switching node for transmitting the data packet to transmit the data packet.
  • an embodiment 6 of the present invention provides an access switching node 600.
  • the access switching node 600 includes an access controller 610 and a switching node 620.
  • the access controller 610 is specifically an interface controller provided in Embodiment 4. 400 or the interface controller 500 provided by the embodiment 5, the switching node 620 is specifically the switching node 200 provided by the embodiment 2 or the switching node 300 provided by the embodiment 3.
  • Embodiment 7 of the present invention provides an access interconnection endpoint 700, including: an interconnection endpoint 710 and an access controller 720.
  • the interconnection endpoint 710 may specifically be the interconnection system provided in Embodiment 1.
  • the access controller 720 is specifically the interface controller 400 provided in Embodiment 4 or the interface controller 500 provided in Embodiment 5, in any one of 100 interconnected endpoints (such as the first interconnected endpoint).
  • Embodiment 8 of the present invention provides a data transmission method, including:
  • Step 810 When receiving the control packet in the form of an electrical signal sent by the first neighboring node, the switching node determines, according to the routing information in the control packet, a second neighboring node, where the route in the control packet
  • the information is routing information of a data packet in the form of an optical signal corresponding to the control packet, where the first neighboring node is specifically a switching node adjacent to the switching node, or an interface controller connected to the switching node,
  • the second neighboring node is specifically a switching node adjacent to the switching node or an interface controller connected to the switching node;
  • Step 820 The switching node sends the control packet to the second neighboring node when the second neighboring node is a switching node adjacent to the switching node.
  • Step 830 The switching node opens, on the switching node, the data packet corresponding to the control packet from a first optical port connected to the first neighboring node to a second adjacent node. Optical path of the second optical port;
  • Step 840 The first switching node transmits the data packet to the second optical port by using the optical path when receiving the data packet by using the first optical port.
  • Step 850 Send the data packet to the second neighboring node by using the second optical port.
  • the method further includes: when the receiving node receives the packet in the form of an electrical signal sent by the first neighboring node, determining, according to information in the packet in the form of the electrical signal, information indicating a type of the packet Whether the packet in the form of the electrical signal is a control packet, and when it is determined that the packet is a control packet, an operation of opening the optical path for the data packet in the form of the optical signal corresponding to the control packet is performed.
  • the specific implementation of the step 810 may be: determining whether the destination of the corresponding data packet of the control packet is an interconnection endpoint connected to the switching node by using an interface controller, and if yes, determining the interface controller as Determining a second neighboring node, otherwise determining a neighboring switching node as an alternate next hop according to a routing algorithm, if the optical port connected to the neighboring switching node that is the alternate next hop is not occupied, Determining the neighboring switching node as the second neighboring node if the exchange The optical port of the node and all neighboring switching nodes that are alternate next hops are occupied, and the memory connected to the switching node by the interface controller is determined as the second neighboring node.
  • Embodiment 8 of the present invention can be performed by any of the switching nodes in the interconnection system provided in Embodiment 1.
  • the control packet received by the switching node is in the form of an electrical signal, and the routing information of the data packet in the form of an optical signal corresponding to the control packet may be directly performed according to the routing information in the control packet.
  • the route is determined to be the next hop neighbor node, and an optical path for transmitting the data packet in the form of the optical signal is opened on the switching node to transmit the data packet. Since the control packet and the data packet do not need to be optical-electrical or electro-optic converted during the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data.
  • the efficiency of the transmission Referring to FIG. 13, Embodiment 9 of the present invention provides a data transmission method, including:
  • Step 910 The interface controller receives data in the form of an electrical signal sent by the interconnecting endpoint, where the interconnecting endpoint may specifically be a processor or a memory;
  • Step 920 The interface controller converts the data into a data packet in the form of an optical signal, and generates a control packet of the data packet, where the control packet is in the form of an electrical signal and includes routing information of the data packet.
  • Step 930 The interface controller sends the control packet to the switching node, and sends the data packet to the switching node after an interval offset time, so that: the switching node receives the control. And determining, according to the routing information of the data packet included in the control packet, opening an optical port connected to the access controller to the next hop on the switching node An optical path of the optical port for transmitting the data packet, and when the data packet in the form of the optical signal is received, the data packet in the form of the optical signal is transmitted through the optical path.
  • the interface controller determines the electrical quantity when determining that the data in the form of the electrical signal satisfies a preset condition, for example, determining that the type of the data in the electrical signal form is a preset type.
  • a preset condition for example, determining that the type of the data in the electrical signal form is a preset type.
  • Embodiment 9 of the present invention can be performed by any of the interconnection systems provided in Embodiment 1.
  • the interface controller converts data in the form of an electrical signal transmitted by the interconnection endpoint into a data packet in the form of an optical signal, and generates a control packet in the form of an electrical signal including routing information of the data packet.
  • control packet and the data packet do not need to be optical-electrical or electro-optic converted during the entire transmission process, the problem of additional delay and power consumption due to the electro-optical-electrical conversion can be reduced, thereby improving the data.
  • the efficiency of the transmission 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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Abstract

本发明实施例公开了一种互连系统、装置和数据传输方法,在该互连系统中,要传输的数据被转换为光信号形式的数据包进行传输,该数据包对应的控制包以电信号的形式传输且包括该数据包的路由信息,在经过交换节点时,交换节点直接根据该控制包中的路由信息确定作为下一跳的相邻节点,并打开该交换节点中的用于传输该数据包的光路以传输该数据包。由于在整个传输过程中,控制包、数据包均无需进行光-电、电-光转换,因此可以减少由于电-光- 电转换带来额外的延时和功耗的问题,从而提高了数据传输的效率。

Description

互连系统、 装置和数据传输方法 技术领域
本发明涉及计算机技术领域, 特别涉及一种互连系统、装置和数据传输方 法。
背景技术
光互连 ( Opt i ca l Interconnect ion )是一种以光波导(如光纤) 为传输 介质的光信号传输方式, 具有功耗低、 时延小、 带宽大的优势。
在基于传统的光互连进行数据传输时,光互连网络中的互连端点发送的电 信号形式的数据被接口控制器转换为光信号形式的数据发送给与该接口控制 器连接的交换节点,光信号被该光互连网络中的交换节点逐跳路由到另一互连 端点所连接的接口控制器, 并被转换为电信号发送给该另一互连端点。
然而, 光信号形式的数据是无法直接解析的, 需要先将其转换成电信号形 式的数据才可以解析以获取该数据中包括的信息, 因此, 在传输路径上的每个 交换节点需要先对接收的光信号形式的数据进行光电转换,再从转换后的电信 号形式的数据中获取路由信息并根据该路由信息进行路由以确定下一跳,然后 再对该电信号形式的数据进行电光转换并将转换后的光信号形式的数据发送 至下一跳, 所以, 存在由于电-光 -电转换带来额外的延时和功耗的问题。
发明内容
本发明提供了一种互连系统、装置和数据传输方法, 以提高数据传输的效 率。
第一方面,提供了一种互连系统,所述互连系统包括:至少两个互连端点、 至少两个接口控制器和 N个交换节点, N为正整数;
所述互连端点中的第一互连端点通过所述接口控制器中的第一接口控制 器连接到所述 N个交换节点中的第一交换节点,所述互连端点中的第二互连端 点通过所述接口控制器中的第二接口控制器连接到所述 N 个交换节点中的第 二交换节点; 所述第一互连端点, 用于向所述第一接口控制器发送电信号形式的数据; 所述第一接口控制器,用于将接收的所述电信号形式的数据转换为光信号 形式的数据包, 并生成所述数据包的控制包, 其中所述控制包为电信号形式并 且包括所述数据包的路由信息; 还用于向所述第一交换节点发送所述控制包, 并在间隔偏置时间后向所述第一交换节点发送所述数据包;
所述 N个交换节点中的任一交换节点,用于在接收到第一相邻节点发送的 所述控制包时, 根据所述数据包的路由信息确定第二相邻节点, 其中, 所述第 一相邻节点具体为与所述任一交换节点相邻的交换节点、或与所述任一交换节 点连接的接口控制器,所述第二相邻节点具体为与所述任一交换节点相邻的交 换节点、或与所述任一交换节点连接的接口控制器,还用于在所述第二相邻节 点为交换节点时向所述第二相邻节点发送所述控制包;为所述数据包在所述任 一交换节点上打开从与所述第一相邻节点连接的第一光端口至与所述第二相 邻节点连接的第二光端口的光路,并在通过所述第一光端口接收到所述数据包 时,通过所述光路将所述数据包传输到所述第二光端口, 并通过所述第二光端 口向所述第二相邻节点发送所述数据包;
所述第二接口控制器, 用于在接收所述第二交换节点发送的所述数据包 时, 将所述数据包转换为电信号形式的数据并发送给所述第二互连端点。
在第一方面的第一种可能的实现方式中, 所述第一接口控制器, 具体用于 在确定所述电信号形式的数据满足预设条件时,执行将所述数据转换为所述光 信号形式的数据包并生成所述控制包的操作。
结合第一方面的第一种可能的实现方式 ,在第二种可能的实现方式中,所 述确定所述电信号形式的数据满足预设条件具体包括,确定所述电信号形式的 数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔值, 或确定 所述电信号形式的数据的类型为预设类型且所述电信号形式的数据大于预设 阔值。 在第一方面的第三种可能的实现方式中, 所述任一交换节点,还用于在接 收到所述第一相邻节点发送的电信号形式的包时根据所述电信号形式的包中 的用于表示包的类型的信息判断所述电信号形式的包是否为控制包,并在判断 出是控制包时执行为所述控制包对应的所述光信号形式的数据包打开所述光 路的操作。
结合第一方面、第一方面的第一种至第三种任一可能的实现方式 ,在第四 种可能的实现方式中,所述至少两个互连端点中的各互连端点具体为处理器或 存储器。
结合第一方面的第四种可能的实现方式 ,在第五种可能的实现方式中,所 述数据包的路由信息包括所述数据包的目的地址;
所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述任一交换节点的互连端点,如果是,将所述接口控制器确 定为所述第二相邻节点, 否则,根据路由算法确定作为备选下一跳的相邻交换 节点,如果所述任一交换节点与作为备选下一跳的相邻交换节点相连的光端口 没有被占用,将所述相邻交换节点确定为所述第二相邻节点,如果所述任一交 换节点与所有作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在 通过接口控制器连接到所述任一交换节点的空闲存储器时,将所述接口控制器 确定为所述第二相邻节点。
第二方面, 提供了一种交换节点, 包括: 路由模块和光开关模块; 所述路由模块, 用于在接收到第一相邻节点发送的电信号形式的控制包 时, 根据所述控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中的 路由信息为所述控制包对应的光信号形式的数据包的路由信息,所述第一相邻 节点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口控 制器, 所述第二相邻节点具体为与所述交换节点相邻的交换节点、或与所述交 换节点连接的接口控制器;还用于在所述第二相邻节点为交换节点时向所述第 二相邻节点发送所述控制包,并指示所述光开关模块为所述控制包对应的光信 号形式的数据包打开从所述交换节点的第一光端口至所述交换节点的第二光 端口的光路, 所述交换节点的第一光端口与所述第一相邻节点的光端口连接, 所述交换节点的第二光端口与所述第二相邻节点的光端口连接;
所述光开关模块, 用于根据所述路由模块的指示打开所述光路, 并用于在 通过所述第一光端口接收到所述数据包时,通过所述光路将所述数据包传输到 所述第二光端口, 并通过所述第二光端口向所述第二相邻节点发送所述数据 包。
在第二方面的第一种可能的实现方式中, 所述路由模块,还用于在接收到 所述第一相邻节点发送的电信号形式的包时根据所述电信号形式的包中的用 于表示包的类型的信息判断所述电信号形式的包是否为控制包,并在判断出是 控制包时指示所述光开关模块为所述控制包对应的所述光信号形式的数据包 打开所述光路。
结合第二方面或第二方面的第一种可能的实现方式 ,在第二种可能的实 现方式中, 所述互连端点具体为处理器或存储器; 所述数据包的路由信息包括 所述数据包的目的地址;
所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为 所述第二相邻节点,否则,根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
第三方面, 提供了一种接口控制器, 包括: 接收单元和处理单元; 所述接收单元,用于接收与所述接口控制器连接的互连端点发送的电信号 形式的数据, 并将接收的数据传输至处理单元;
所述处理单元, 用于从所述接收单元接收所述数据, 将所述数据转换为光 信号形式的数据包, 并生成所述数据包的控制包, 其中所述控制包为电信号形 式且包括所述数据包的路由信息;还用于向与所述接口控制器连接的交换节点 发送所述控制包, 并在间隔偏置时间后向所述交换节点发送所述数据包, 以便 于:所述交换节点在收到所述控制包且根据所述控制包所包括的所述数据包的 路由信息确定下一跳时,在所述交换节点上打开从与所述接入控制器连接的光 端口至与所述下一跳连接的光端口的用于传输所述数据包的光路,并在收到所 述光信号形式的数据包时, 通过所述光路传输所述光信号形式的数据包。
在第三方面的第一种可能的实现方式中, 所述处理单元, 具体用于在确定 所述电信号形式的数据满足预设条件时,执行将所述数据转换为所述光信号形 式的数据包并生成所述控制包的操作。
结合第三方面的第一种可能的实现方式 ,在第二种可能的实现方式中,所 述处理单元, 具体用于在确定所述电信号形式的数据的类型为预设类型, 或确 定所述电信号形式的数据大于预设阔值,或确定所述电信号形式的数据的类型 为预设类型且所述电信号形式的数据大于预设阔值时,执行将所述数据转换为 所述光信号形式的数据包并生成所述控制包的操作。 第四方面, 提供了一种交换节点, 包括: 处理器、 存储器和光开关; 所述存储器, 用于存放计算机操作指令;
所述处理器,用于执行所述存储器中存放的计算机操作指令使得所述交换 节点实现如下操作:
在接收到第一相邻节点发送的电信号形式的控制包时,根据所述控制包中 的路由信息确定第二相邻节点, 其中, 所述控制包中的路由信息为所述控制包 对应的光信号形式的数据包的路由信息,所述第一相邻节点具体为与所述交换 节点相邻的交换节点、或与所述交换节点连接的接口控制器, 所述第二相邻节 点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口控制 器;
向所述第二相邻节点发送所述控制包;
打开从所述光开关的第一光端口至所述光开关的第二光端口的光路,所述 光开关的第一光端口与所述第一相邻节点的光端口连接,所述光开关的第二光 端口与所述第二相邻节点的光端口连接;
所述光开关, 用于在通过所述第一光端口接收到所述数据包时,通过所述 光路将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第二 相邻节点发送所述数据包。
在第四方面的第一种可能的实现方式中,所述互连端点具体为处理器或存 储器; 所述数据包的路由信息包括所述数据包的目的地址;
所述处理器执行所述计算机操作指令具体使得所述交换节点实现如下操 作:根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接口 控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为所 述第二相邻节点, 否则, 根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
结合第四方面或第四方面的第一种可能的实现方式 ,在第二种可能的实 现方式中,所述处理器执行所述计算机操作指令进一步使得所述交换节点实现 如下操作:在接收到所述第一相邻节点发送的电信号形式的包时根据所述电信 号形式的包中的用于表示包的类型的信息判断所述电信号形式的包是否为控 制包,并在判断出是控制包时为所述控制包对应的所述光信号形式的数据包打 开所述光路。
第五方面, 提供了一种接口控制器, 包括: 处理器和存储器;
所述存储器, 用于存放计算机操作指令;
所述处理器,用于执行所述存储器中存放的计算机操作指令使得所述接口 控制器实现如下操作:
在接收到与所述接口控制器连接的互连端点发送的电信号形式的数据时, 将所述数据转换为光信号形式的数据包, 并生成所述数据包的控制包, 其中所 述控制包为电信号形式且包括所述数据包的路由信息;
向与所述接口控制器连接的交换节点发送所述控制包,并在间隔偏置时间 后向所述交换节点发送所述数据包, 以便于: 所述交换节点在收到所述控制包 且根据所述控制包所包括的所述数据包的路由信息确定下一跳时,在所述交换 节点上打开从与所述接入控制器连接的光端口至与所述下一跳连接的光端口 的用于传输所述数据包的光路, 并在收到所述光信号形式的数据包时,通过所 述光路传输所述光信号形式的数据包。
在第五方面的第一种可能的实现方式中,所述处理器执行所述计算机操作 指令具体使得所述接口控制器实现如下操作:在确定所述电信号形式的数据满 足预设条件时,执行将所述数据转换为所述光信号形式的数据包并生成所述控 制包的操作。
结合第五方面的第一种可能的实现方式 ,在第二种可能的实现方式中,所 述处理器执行所述计算机操作指令具体使得所述接口控制器实现如下操作:在 确定所述电信号形式的数据的类型为预设类型,或确定所述电信号形式的数据 大于预设阔值,或确定所述电信号形式的数据的类型为预设类型且所述电信号 形式的数据大于预设阔值时,执行将所述数据转换为所述光信号形式的数据包 并生成所述控制包的操作。
第六方面, 提供了一种接入交换节点, 包括:
如第三方面、第三方面的第一种或第二种可能的实现方式实现的接入控制 器, 或如第五方面、第五方面的第一种或第二种可能的实现方式实现的接入控 制器;
如第二方面、 第二方面的第一种或第二种可能的实现方式实现的交换节 点, 或如第四方面、第四方面的第一种或第二种可能的实现方式实现的交换节 点。 第七方面, 提供了一种接入互连端点, 包括:
互连端点;
如第三方面、第三方面的第一种或第二种可能的实现方式实现的接入控制 器, 或如第五方面、第五方面的第一种或第二种可能的实现方式实现的接入控 制器。 第八方面, 提供了一种数据传输方法, 包括:
交换节点在接收到第一相邻节点发送的电信号形式的控制包时,根据所述 控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中的路由信息为所 述控制包对应的光信号形式的数据包的路由信息,所述第一相邻节点具体为与 所述交换节点相邻的交换节点、或与所述交换节点连接的接口控制器, 所述第 二相邻节点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的 接口控制器; 所述交换节点向所述第二相邻节点发送所述控制包;
所述交换节点为所述控制包对应的所述数据包在所述交换节点上打开从 与所述第一相邻节点连接的第一光端口至与所述第二相邻节点连接的第二光 端口的光路;
所述交换节点在通过所述第一光端口接收到所述数据包时,通过所述光路 将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第二相邻 节点发送所述数据包。
在第八方面的第一种可能的实现方式中, 所述方法还包括: 所述交换节点 在接收到所述第一相邻节点发送的电信号形式的包时根据所述电信号形式的 包中的用于表示包的类型的信息判断所述电信号形式的包是否为控制包,并在 判断出是控制包时执行为所述控制包对应的所述光信号形式的数据包打开所 述光路的操作。
结合第八方面或第八方面的第一种可能的实现方式 ,在第二种可能的实 现方式中, 所述互连端点具体为处理器或存储器; 所述数据包的路由信息包括 所述数据包的目的地址;
所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为 所述第二相邻节点,否则,根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。 第九方面, 提供了一种数据传输方法, 包括: 接口控制器接收与所述接口控制器连接的互连端点发送的电信号形式的 数据;
所述接口控制器将所述数据转换为光信号形式的数据包,并生成所述数据 包的控制包, 其中所述控制包为电信号形式且包括所述数据包的路由信息; 所述接口控制器向与所述接口控制器连接的交换节点发送所述控制包,并 在间隔偏置时间后向所述交换节点发送所述数据包, 以便于: 所述交换节点在 收到所述控制包且根据所述控制包所包括的所述数据包的路由信息确定下一 跳时,在所述交换节点上打开从与所述接入控制器连接的光端口至与所述下一 跳连接的光端口的用于传输所述数据包的光路,并在收到所述光信号形式的数 据包时, 通过所述光路传输所述光信号形式的数据包。
在第九方面的第一种可能的实现方式中,所述接口控制器在确定所述电信 号形式的数据满足预设条件时,执行将所述数据转换为所述光信号形式的数据 包并生成所述控制包的操作。
结合第九方面的第一种可能的实现方式 ,在第二种可能的实现方式中,所 述确定所述电信号形式的数据满足预设条件具体包括,确定所述电信号形式的 数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔值, 或确定 所述电信号形式的数据的类型为预设类型且所述电信号形式的数据大于预设 阔值。
根据本发明实施例, 要传输的数据被转换为光信号形式的数据包进行传 输, 该数据包对应的控制包以电信号的形式传输且包括该数据包的路由信息, 在经过交换节点时,交换节点直接根据该控制包中的路由信息确定作为下一跳 的相邻节点, 并打开该交换节点中的用于传输该数据包的光路以传输该数据 包。 由于在整个传输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以减少由于电 -光 -电转换带来额外的延时和功耗的问题,从而提高了数 据传输的效率。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付 出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例 1提供的互连系统的一种结构示意图;
图 2a为本发明实施例 1提供的互连系统中的互连端点、 接口控制器和交 换节点之间的连接方式示意图;
图 2b为本发明实施例 1提供的互连系统中的交换节点之间的连接方式示 意图;
图 3为本发明实施例 1提供的互连系统 100的又一种结构示意图; 图 4为本发明实施例 1提供的在交换节点上打开的光路的示意图; 图 5为本发明实施例 2提供的交换节点 200的结构示意图;
图 6-1和图 6-2为本发明实施例 2提供的交换节点 200的光开关的结构示 意图
图 7本发明实施例 3提供的交换节点 300的结构示意图;
图 8为本发明实施例 4提供的接口控制器 400的结构示意图;
图 9为本发明实施例 5提供的接口控制器 500的结构示意图;
图 1 0为本发明实施例 6提供的接入交换节点 600的结构示意图; 图 1 1为本发明实施例 7提供的接入互连端点 700的结构示意图; 图 12为本发明实施例 8提供的数据传输方法的交互流程图;
图 1 3为本发明实施例 9提供的数据传输方法的交互流程图。 具体实施方式
为使本发明的目的、技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
图 1为本发明实施例 1提供的互连系统 100的一种结构示意图。互连系统 100包括: 互连端点 1 10、 接口控制器 120和交换节点 1 30。 互连端点(如图 1的 110(A))通过对应的接口控制器(如图 1的 120(A)) 连接到对应的交换节点(如图 1的交换节点 130 ( A))上, 具体连接方式可以 如图 2a所示, 互连端点的电端口和接口控制器的电端口通过电互连线 141连 接,接口控制器的另一电端口和交换节点的电端口通过电互连线 141连接,接 口控制器的光端口和交换节点的光端口通过光波导 142连接。具体实现时, 图 2a 所示的互连端点、 接口控制器、 交换节点可以分别在不同的物理实体上实 现,也可以将互连端点和接口控制器集成在一起,也可以将接口控制器和交换 节点集成在一起。
如图 2b所示, 互连系统 100中的相邻的交换节点的电端口通过电互连线 141连接, 相邻的交换节点的光端口通过光波导 142连接。
互连系统 100中的电互连线 141用于传输电信号,可以是铜线、纳米线等; 光波导 142用于传输光信号, 可以是光导纤维(如光纤、 光缆)、 薄膜波导、 带状波导等。
整体上,互连系统 100中的各交换节点的通过电互连线 141以一种网络拓 朴结构连接起来, 如 MESH (网格)型拓朴结构、 Torus (环面)拓朴结构, 各 交换节点及连接各交换节点的电互连线整体上构成电网络;各交换节点通过光 波导以一种网络拓朴结构连接起来,各交换节点及连接各交换节点的光波导整 体上构成光网络, 如 MESH型拓朴结构、 Torus拓朴结构。 所述电网络的网络 拓朴结构和所述光网络的网络拓朴结构可以相同, 也可以不同。
互连系统 100具体可以是板间互连系统,相应地, 互连端点 100具体为服 务器等。
互连系统 100具体还可以是片间互连系统, 如图 3所示, 相应地, 互连端 点 100具体为处理器 111或存储器 112。
处理器 111, 具体可以是中央处理器(CPU, Central Processing Unit ), 集成电路 (ASIC, Application Specific Integrated Circuit )等。
存储器 112,具体可以是高速 RAM存储器、非易失性存储器( non-vo latile memory )等。 下面结合图 3介绍互连系统 100中的互连端点、接口控制器、 交换节点的 具体功能实现。
互连端点 11 0中的第一互连端点(如 1 11-1 )通过接口控制器 120中的第 一接口控制器(如 120-1 )连接到交换节点 1 30中的第一交换节点(如交换节 点 1 )。
互连端点 11 0中的第二互连端点(如 1 12-5 )通过接口控制器 120中的第 二接口控制器(如 120-5 )连接到交换节点 1 30中的第二交换节点(如交换节 点 5 )。 所述第二交换节点和所述第一交换节点可能相同也可能不同。 所述第一互连端点, 用于向所述第一接口控制器发送电信号形式的数据。 如, 所述第一互连端点为处理器,要向互连系统 100中的另一处理器传输 数据, 或向互连系统 100中的一个存储器写数据(如处理器 111-1要向存储器 112-5写数据), 又如, 所述第一互连端点为存储器, 互连系统 100 中的一个 处理器从所述存储器中读数据,则所述第一互连端点先向所述第一接口控制器 发送该数据。 所述第一接口控制器,用于将接收的所述电信号形式的数据转换为光信号 形式的数据包, 并生成所述光信号形式的数据包的控制包, 其中所述控制包为 电信号形式并且包括所述数据包的路由信息;还用于向所述第一交换节点发送 所述控制包, 并在间隔偏置时间后向所述第一交换节点发送所述数据包。
所述偏置时间, 具体可以是根据经验值、 测试数据等确定, 只要确定的所 述偏置时间能保证所述控制包对应的所述光信号形式的数据包略晚于所述控 制包到达同一交换节点即可。
所述路由信息包括所述数据包的目的地址,还可以包括所述数据 包的优先级等信息。
将所述电信号形式的数据转换为光信号形式的数据包的具体实现可以为, 将所述电信号形式的数据封装为电信号形式的数据包,并通过电光转换将所述 电信号形式的数据包转换为光信号形式的数据包。
在本发明实施例 1利用光突发交换(0BS, Opt ica l Burs t Swi tching )技 术实现数据传输时, 所述数据包具体为突发包。
转换成的数据包可以为一个或多个,所述第一接口控制器可以为每个数据 包都生成一个对应的控制包。
所述第一接口控制器可以在每次接收到所述第一互连端点发送的电信号 形式的数据时,都将其转换为光信号形式的数据包并生成所述数据包对应的控 制包, 并发送给所述第一交换节点, 而不管该数据的属性(如数据的类型和大 小 )。
所述第一接口控制也可以在从所述第一互连端点接收到电信号形式的数 据时, 判断该数据是否满足预设的条件, 并在确定该数据满足预设条件时, 执 行将该数据转换为光信号形式的数据包并生成相应的控制包的操作,对于不满 足该预设条件的数据,则可以直接通过与所述第一交换节点之间的电互连线传 输给所述第一交换节点。
具体判断的方法可以是, 判断该数据的类型是否为预设类型, 如果是预设 类型, 则执行将该数据转换为光信号形式的数据包并生成相应的控制包的操 作。 如, 互连端点和接口控制器之间的电互连线一般包括多条引脚线, 如数据 线、 地址线、 控制线、 供电线、 时钟线等, 通过不同引脚线传输不同类型的数 据, 譬如, 通过控制线传输控制信号, 所述第一接口控制器则可以根据传输该 数据的引脚线来判断该数据的类型, 进而确定该数据是否为预设类型的数据, 如果是则执行将该数据转换为光信号形式的数据包并生成相应的控制包的操 作。
具体判断的方法还可以是, 判断该数据是否大于预设阔值, 如果是, 则执 行将该数据转换为光信号形式的数据包并生成相应的控制包的操作。
具体实现时, 还可以结合该数据的类型和大小综合判断, 如, 判断该数据 的类型是否为预设类型并且该数据是否大于预设阔值,如果该数据为预设类型 并且大于预设阔值,则执行将该数据转换为光信号形式的数据包并生成相应的 控制包的操作。 交换节点 1 30中的任一交换节点 (如交换节点 1、 交换节点 2, 为便于表 述, 后续称之为当前交换节点), 用于在接收到第一相邻节点发送的所述控制 包时, 根据所述控制包所包括的所述数据包的路由信息(如, 所述数据包的目 的地址、 优先级等)确定第二相邻节点, 所述第一相邻节点具体为与当前交换 节点相邻的交换节点、或与当前交换节点连接的接口控制器, 所述第二相邻节 点具体为与当前交换节点相邻的交换节点、或与当前交换节点连接的接口控制 器;还用于在所述第二相邻节点为与当前交换节点相邻的交换节点时向所述第 二相邻节点发送所述控制包,为所述控制包对应的所述数据包在所述交换节点 上打开从与所述第一相邻节点连接的第一光端口至与所述第二相邻节点连接 的第二光端口的光路, 并在通过所述第一光端口接收到所述数据包时,通过所 述光路将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第 二相邻节点发送所述数据包。
如图 4所示, 4-1为所述第一光端口, 4-2为所述第二光端口, 4-3为打 开的从所述第一光端口至所述第二光端口的光路。
在确定所述第二相邻节点时, 所述当前交换节点, 具体可以在根据路由算 法确定作为备选下一跳的相邻交换节点时,判断当前交换节点与该相邻交换节 点连接的光端口是否处于空闲状态,并在判断出处于空闲状态时将该交换节点 确定为所述第二相邻节点, 并将所述光端口的状态设置为占用状态。 相应地, 所述当前交换节点,还用于在发送所述光信号形式的数据包后将所述光端口的 状态重新设置为空闲状态。 需要说明的是, 在所述第二相邻节点不是与当前交换节点相邻的交换节 点, 而是与当前交换节点连接的接口控制器时, 当前交换节点可以将所述控制 包发送给所述接口控制器,也可以直接丟弃。如果当前交换节点将所述控制包 发送给所述接口控制器,则所述接口控制器可以在确定接收的为控制包时将该 控制包直接丟弃。
在具体实现时, 各节点(包括接口控制器和交换节点)之间传输的电信号 形式的包, 可能都是控制包, 也可能既包括控制包也包括其它类型的包, 优选 地, 当前交换节点在从所述第一相邻节点接收到电信号形式的包时,还可以根 据所述包中的用于表示包的类型的信息判断所述包是否为控制包,并在判断出 是控制包时执行为所述控制包对应的数据包打开光路的操作。
当互连系统 1 00为片间互连系统时,如果该互连系统中的交换节点通过接 口控制器连接了存储器,则该交换节点可以将连接的存储器作为该交换节点的 緩存使用, 相应地, 在确定下一跳时, 如果所述交换节点与所有作为备选下一 跳的相邻交换节点的光端口均被占用,则可以通过该接口控制器将要传输的数 据包存储到该存储器中 (即, 将该接口控制器作为下一跳)。
具体地,当前交换节点根据所述控制包中的路由信息确定第二相邻节点的 一种实现方式为:根据所述控制包所包括的所述数据包的目的地址判断所述控 制包的对应数据包的目的地是否为通过接口控制器连接到所述交换节点的互 连端点, 如果是, 将所述接口控制器确定为所述第二相邻节点, 否则, 根据路 由算法确定作为备选下一跳的相邻交换节点,如果所述交换节点与作为备选下 一跳的相邻交换节点相连的光端口没有被占用 (即处于空闲状态), 将所述相 邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有作为备选下一 跳的相邻交换节点的光端口均被占用 (即均处于占用状态), 在确定存在通过 接口控制器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所 述第二相邻节点。
当前交换节点为所述第一交换节点时,所述第一相邻节点即为所述第一接 口控制器; 当前交换节点为所述第二交换节点时, 所述第二相邻节点即为所述 第二接口控制器。 以所述数据包和所述控制包的传输路径为交换节点 1、 交换 节点 2、交换节点 5为例,交换节点 1的第一相邻节点为接口控制器 120-1 (即 所述第一接口控制器)、 第二相邻节点为交换节点 2 ; 交换节点 2的第一相邻 节点为交换节点 1、 第二相邻节点为交换节点 5; 交换节点 5 (即所述第二交 换节点)的第一相邻节点为交换节点 2、第二相邻节点为接口控制器 120-5 (即 所述第二接口控制器)。 所述第二控制器, 用于在接收所述第二交换节点发送的所述数据包时, 将 所述数据包转换为电信号形式的数据并发送给所述第二互连端点。
仍然以所述数据包和所述控制包的传输路径为交换节点 1、 交换节点 2、 交换节点 5为例, 交换节点 5为所述第二交换节点, 与交换节点 5连接的接口 控制器 120-5为所述第二接口控制器。
需要说明的是, 所述第二互连端点可能是所述数据的预定目的地 (即所述 控制包中携带的目的地址对应的目的地 ), 也可能是临时确定的所述数据的目 的地, 如, 所述数据的预定目的地为第三互连端点 (如存储器 112-9 ), 当交 换节点 5从交换节点 2收到所述控制包时,交换节点 5根据所述控制包中的路 由信息依次确定的备选下一跳为交换节点 4、 8、 6, 但是, 交换节点 5确定本 节点与这三个备选下一跳连接的光端口均被占用了,则无法为所述控制包对应 的数据包打开通往下一交换节点的光路, 则交换节点 5 打开从与交换节点 2 连接的光端口至与接口控制器 120-5连接的光端口的光路,并在通过与交换节 点 2连接的光端口收到所述数据包时,通过所述打开的光路将所述数据包发送 给接口控制器 120-5 (即所述第二接口控制器), 由接口控制器 120-5将所述 数据包转换为电信号形式的数据存储到存储器 112-5 (即所述第二互连端点 ) 中。
如果所述第二互连端点并非所述数据的预定目的地,则所述第二互连端点 (即所述第二接口控制器上连接的一个存储器)在存储所述电信号形式的数据 时,将存储所述数据的地址通过所述第二接口控制器发送给后续有可能读取所 述数据的处理器(如, 互连系统 100中的所有处理器)。 另外, 互连系统 100中的同一交换节点上连接多个互连端点时, 这多个互 连端点可以是分别通过一个接口控制器连接到该交换节点上,也可以是都通过 同一个接口控制器连接到该交换节点上,也可以是部分互连端点通过一个接口 控制器连接到该交换节点,部分互连端点通过另一接口控制器连接到该交换节 点。
具体地, 互连系统 100为片间互连系统时, 同一交换节点上可以连接多个 处理器和 /或多个存储器。 同一交换节点上连接的各个处理器, 可以位于不同 的 PCB板(Pr inted Ci rcui t Board , 印制电路板)、 服务器机框甚至是不同的 机拒。 同一交换节点上连接的各个存储器也可以位于不同的 PCB板、服务器机 框甚至是不同的机拒。
当该交换节点上连接多个处理器时,多个处理器可以通过不同的接口控制 器连接到该交换节点,也可以通过同一个接口控制器连接到该交换节点。在通 过同一个接口控制器连接到该交换节点时,该接口控制器和该交换节点利用波 分复用技术通过该接口控制器和该交换节点之间的光波导传输多个处理器和 该交换节点之间的数据, 多个处理器之间可以通过电端口连接成一个子网络 (如环形网络), 以使得多个处理器之间通过该子网络直接通信。
当该交换节点上连接多个存储器时,多个存储器可以通过不同的接口控制 器连接该交换节点,也可以通过同一个接口控制器连接到该交换节点。在通过 同一个接口控制器连接到该交换节点时,多个存储器以胖树形结构连接到该交 换节点上, 其中, 各个存储器为该胖树形结构的叶子节点, 该交换节点为该胖 树形结构的根节点。
根据本发明实施例 1提供的互连系统 100, 要传输的数据被转换为光信号 形式的数据包进行传输, 该数据包对应的控制包以电信号的形式传输,在经过 交换节点时,交换节点直接根据该控制包中的路由信息确定作为下一跳的相邻 节点, 并打开该交换节点中的用于传输该数据包的光路以传输该数据包。 由于 在整个传输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以 减少由于电-光-电转换带来额外的延时和功耗的问题,从而提高了数据传输的 效率。 参见图 5, 本发明实施例 2提供了一种交换节点 200, 包括: 处理器 210、 存储器 220和光开关 230, 其中, 处理器 210、 存储器 220和光开关 230之间 可以通过总线连接。
存储器 220, 用于存放计算机操作指令。 存储器 220可能包含高速 RAM存 储器, 也可能还包括非易失性存储器(non- vola t i le memory ), 例如至少一个 磁盘存储器。
处理器 210, 用于执行存储器 420中存放的计算机操作指令。 处理器 210 具体可以是中央处理器(CPU, centra l proces s ing uni t ), 是计算机核心单 元。
其中,处理器 210执行所述计算机操作指令使得交换节点 200实现如下操 作:
在接收到第一相邻节点发送的电信号形式的控制包时,根据所述控制包中 的路由信息确定第二相邻节点, 其中, 所述控制包中的路由信息为所述控制包 对应的光信号形式的数据包的路由信息,所述第一相邻节点具体为与所述交换 节点相邻的交换节点、或与所述交换节点连接的接口控制器, 所述第二相邻节 点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口控制 器;
向所述第二相邻节点发送所述控制包;
打开从光开关 230的第一光端口至光开关 230的第二光端口的光路,光开 关 230的第一光端口与所述第一相邻节点的光端口连接,光开关 230的第二光 端口与所述第二相邻节点的光端口连接。
所述路由信息包括所述数据包的目的地址,还可以包括所述数据包的优先 级等信息。
所述互连端点具体可以为处理器或存储器。
处理器 210执行所述计算机操作指令具体可以使得交换节点 200实现如下 操作:根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为 所述第二相邻节点,否则,根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
光开关 230, 用于在通过所述第一光端口接收到所述数据包时, 通过所述 光路将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第二 相邻节点发送所述数据包。
光开关 230具体可以是T环、 MZI (Mach Zehnder Interferometer, 马赫 增德尔干涉)、 S0A ( semiconductor optical amplifier, 半导体光放大器)、
MEMS (Micro Electro Mechanical systems, 敖电子机械系统)等类型的开关。
示例地, 如图 6-1所示, 光开关 230为一个由光波导和微环(如图 6-1 所示的 MR)构成的 6 x 6 双向光开关, 有 6 个光端 口 ( Eas t, South, We s t, Nor th, Eject ion/ Inject ion, Up/Down ) ,每个光 端口都是双向的。
每个微环的开光状态控制如图 6-2 所示, 虚线所示为微环处于关 状态时的传输方向, 实线所示为微环处于开状态时的传输方向。
处理器 210具体可以通过执行所述计算机操作指令控制光开关 230中 的各微环的开关状态来打开光开关 230 的两个端口之间的光路。 如图 6-1所示, 若要打开从光端口 West至光端口 Up/Down的光路, 可以控 制关闭 1号微环、 打开 1号微环、 关闭 3号和 4号微环来实现。
优选地,处理器 210执行所述计算机操作指令还可以进一步使得交换节点 200实现如下操作: 在接收到所述第一相邻节点发送的电信号形式的包时根据 所述电信号形式的包中的用于表示包的类型的信息判断所述电信号形式的包 是否为控制包,并在判断出是控制包时为所述控制包对应的所述光信号形式的 数据包打开所述光路。 实施例 2提供的交换节点 200可以是实施例 1提供的互连系统 100中的任 一交换节点,实施例 1提供的互连系统 100中的任一交换节点均可以通过实施 例 2提供的交换节点 200的实现方式来实现。
根据本发明实施例 2提供的交换节点 200, 交换节点接收的控制包为电信 号形式且包括该控制包对应的光信号形式的数据包的路由信息,可以直接根据 该控制包中的路由信息进行路由以确定作为下一跳相邻节点,并在该交换节点 上打开用于传输该光信号形式的数据包的光路以传输该数据包。由于在整个传 输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以减少由于 电-光 -电转换带来额外的延时和功耗的问题, 从而提高了数据传输的效率。 参见图 7,本发明实施例 3提供了一种交换节点 300, 包括: 路由模块 310 和光开关模块 320。
路由模块 310, 用于在接收到所述第一相邻节点发送的电信号形式的控制 包时, 根据所述控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中 的路由信息为所述控制包对应的光信号形式的数据包的路由信息,所述第一相 邻节点具体为与交换节点 300相邻的交换节点、或与交换节点 300连接的接口 控制器, 所述第二相邻节点具体为与交换节点 300相邻的交换节点、或与交换 节点 300连接的接口控制器;还用于在所述第二相邻节点为与所述交换节点相 邻的交换节点时向所述第二相邻节点发送所述控制包, 并指示光开关模块 320 为所述控制包对应的光信号形式的数据包打开从交换节点 300 的第一光端口 至交换节点 300的第二光端口的光路,交换节点 300的第一光端口与所述第一 相邻节点的光端口连接,交换节点 300的第二光端口与所述第二相邻节点的光 端口连接。
所述路由信息包括所述数据包的目的地址,还可以包括所述数据包的优先 级等信息。
所述互连端点具体可以为处理器或存储器。 路由模块 310 具体可以根据所述目的地址判断所述光信号形式的数据包 的目的地是否为通过接口控制器连接到所述交换节点的互连端点,如果是,将 所述接口控制器确定为所述第二相邻节点, 否则,根据路由算法确定作为备选 下一跳的相邻交换节点,如果所述交换节点与作为备选下一跳的相邻交换节点 相连的光端口没有被占用,将所述相邻交换节点确定为所述第二相邻节点,如 果所述交换节点与所有作为备选下一跳的相邻交换节点的光端口均被占用,在 确定存在通过接口控制器连接到所述交换节点的空闲存储器时,将所述接口控 制器确定为所述第二相邻节点。
光开关模块 320, 用于根据路由模块 310的指示打开所述光路, 并用于在 通过所述第一光端口接收到所述数据包时,通过所述光路将所述数据包传输到 所述第二光端口, 并通过所述第二光端口向所述第二相邻节点发送所述数据 包。
路由模块 310, 还可以用于在接收到所述第一相邻节点发送的电信号形式 的包时根据所述电信号形式的包中的用于表示包的类型的信息判断所述电信 号形式的包是否为控制包,并在判断出是控制包时指示光开关模块 320为所述 控制包对应的所述光信号形式的数据包打开所述光路。 实施例 3提供的交换节点 300可以是实施例 1提供的互连系统 100中的任 一交换节点,实施例 1提供的互连系统 100中的任一交换节点均可以通过实施 例 2提供的交换节点 300的实现方式来实现。
根据本发明实施例 3提供的交换节点 300, 交换节点接收的控制包为电信 号形式且包括该控制包对应的光信号形式的数据包的路由信息,可以直接根据 该控制包中的路由信息进行路由以确定作为下一跳相邻节点,并在该交换节点 上打开用于传输该光信号形式的数据包的光路以传输该数据包。由于在整个传 输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以减少由于 电-光 -电转换带来额外的延时和功耗的问题, 从而提高了数据传输的效率。 参见图 8,本发明实施例 4提供了一种接口控制器 400, 包括: 处理器 410 和存储器 420, 其中, 处理器 410和存储器 420之间通过总线连接。
存储器 420, 用于存放计算机操作指令。 存储器 420可能包含高速 RAM存 储器, 也可能还包括非易失性存储器(non- vola t i le memory ), 例如至少一个 磁盘存储器。
处理器 410, 用于执行存储器 420中存放的计算机操作指令。 处理器 410 具体可以是中央处理器(CPU, centra l proces s ing uni t ), 是计算机核心单 元。
其中,处理器 410执行所述计算机操作指令使得接口控制器 400实现如下 操作:
在接收到与所述接口控制器连接的互连端点发送的电信号形式的数据时, 将所述数据转换为光信号形式的数据包, 并生成所述数据包的控制包, 其中所 述控制包为电信号形式且包括所述数据包的路由信息;
向与所述接口控制器连接的交换节点发送所述控制包,并在间隔偏置时间 后向所述交换节点发送所述数据包, 以便于: 所述交换节点在收到所述控制包 且根据所述控制包所包括的所述数据包的路由信息确定下一跳时,在所述交换 节点上打开从与所述接入控制器连接的光端口至与所述下一跳连接的光端口 的用于传输所述数据包的光路, 并在收到所述光信号形式的数据包时,通过所 述光路传输所述光信号形式的数据包。
优选地, 处理器 410 执行所述计算机操作指令可以具体使得接口控制器 400实现如下操作: 在确定所述电信号形式的数据满足预设条件时, 执行将所 述数据转换为所述光信号形式的数据包并生成所述控制包的操作。
所述确定所述电信号形式的数据满足预设条件具体包括,确定所述电信号 形式的数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔值, 或确定所述电信号形式的数据的类型为预设类型且所述电信号形式的数据大 于预设阔值。
实施例 4提供的接口控制器 400可以是实施例 1提供的互连系统 100中的 任一接口控制器,实施例 1提供的互连系统 100中的任一接口控制器均可以通 过实施例 4提供的接口控制器 400的实现方式来实现。
实施例 4提供的接口控制器 400可以是实施例 1提供的互连系统 100中的 任一接口控制器,实施例 1提供的互连系统 100中的任一接口控制器均可以通 过实施例 4提供的接口控制器 400的实现方式来实现。
根据本发明实施例 4提供的接口控制器 400, 接口控制器将互连端点发送 的电信号形式的数据转换为光信号形式的数据包,生成包括该数据包的路由信 息的电信号形式的控制包发送给交换节点,并在间隔偏置时间后将所述光信号 形式的数据包发送给该交换节点, 所以, 该交换节点可以直接根据该控制包中 的路由信息进行路由以确定下一跳,并打开该交换节点中的用于传输该数据包 的光路以传输该数据包。 由于在整个传输过程中, 控制包、 数据包均无需进行 光 -电、 电-光转换, 因此可以减少由于电-光 -电转换带来额外的延时和功耗的 问题, 从而提高了数据传输的效率。 参见图 9, 本发明实施例 5提供了一种接口控制器 500, 包括: 接收单元 510和处理单元 520。
接收单元 510, 用于接收与所述接口控制器连接的互连端点发送的电信号 形式的数据, 并将接收的数据传输至处理单元 520, 其中, 所述互连端点具体 可以为处理器或存储器。
处理单元 520, 用于从接收单元 510接收所述数据, 将所述数据转换为光 信号形式的数据包, 并生成所述数据包的控制包, 其中所述控制包为电信号形 式且包括所述数据包的路由信息;还用于向与所述接口控制器连接的交换节点 发送所述控制包, 并在间隔偏置时间后向所述交换节点发送所述数据包, 以便 于:所述交换节点在收到所述控制包且根据所述控制包所包括的所述数据包的 路由信息确定下一跳时,在所述交换节点上打开从与所述接入控制器连接的光 端口至与所述下一跳连接的光端口的用于传输所述数据包的光路,并在收到所 述光信号形式的数据包时, 通过所述光路传输所述光信号形式的数据包。 处理单元 520, 可以具体用于在确定所述电信号形式的数据满足预设条件 时, 如, 在确定所述电信号形式的数据的类型为预设类型, 或确定所述电信号 形式的数据大于预设阔值,或确定所述电信号形式的数据的类型为预设类型且 所述电信号形式的数据大于预设阔值时,执行将所述数据转换为所述光信号形 式的数据包并生成所述控制包的操作。 另夕卜,还可以用于在确定所述数据不满 足预设条件时, 直接通过与所述交换节点之间的电互连线传输给所述交换节 点。 实施例 5提供的接口控制器 500可以是实施例 1提供的互连系统 100中的 任一接口控制器,实施例 1提供的互连系统 100中的任一接口控制器均可以通 过实施例 5提供的接口控制器 500的实现方式来实现。
根据本发明实施例 5提供的接口控制器 500, 接口控制器将互连端点发送 的电信号形式的数据转换为光信号形式的数据包,生成包括该数据包的路由信 息的电信号形式的控制包发送给交换节点,并在间隔偏置时间后将所述光信号 形式的数据包发送给该交换节点, 所以, 该交换节点可以直接根据该控制包中 的路由信息进行路由以确定下一跳,并打开该交换节点中的用于传输该数据包 的光路以传输该数据包。 由于在整个传输过程中, 控制包、 数据包均无需进行 光 -电、 电-光转换, 因此可以减少由于电-光 -电转换带来额外的延时和功耗的 问题, 从而提高了数据传输的效率。 参见图 10, 本发明实施例 6提供了一种接入交换节点 600,接入交换节点 600包括接入控制器 610和交换节点 620, 接入控制器 610具体为实施例 4提 供的接口控制器 400或实施例 5提供的接口控制器 500, 交换节点 620具体为 实施例 2提供的交换节点 200或实施例 3提供的交换节点 300。 参见图 11, 本发明实施例 7提供了一种接入互连端点 700, 包括: 互连端 点 710和接入控制器 720, 互连端点 710具体可以是实施例 1提供的互连系统 100 中的任一互连端点 (如所述第一互连端点), 接入控制器 720具体为实施 例 4提供的接口控制器 400或实施例 5提供的接口控制器 500。 参见图 12, 本发明实施例 8提供了一种数据传输方法, 包括:
步骤 810: 交换节点在接收到所述第一相邻节点发送的电信号形式的控制 包时, 根据所述控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中 的路由信息为所述控制包对应的光信号形式的数据包的路由信息,所述第一相 邻节点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口 控制器, 所述第二相邻节点具体为与所述交换节点相邻的交换节点、或与所述 交换节点连接的接口控制器;
步骤 820: 所述交换节点在所述第二相邻节点为与所述交换节点相邻的交 换节点时向所述第二相邻节点发送所述控制包;
步骤 830: 所述交换节点为所述控制包对应的所述数据包在所述交换节点 上打开从与所述第一相邻节点连接的第一光端口至与所述第二相邻节点连接 的第二光端口的光路;
步骤 840:所述第一交换节点在通过所述第一光端口接收到所述数据包时, 通过所述光路将所述数据包传输到所述第二光端口;
步骤 850: 通过所述第二光端口向所述第二相邻节点发送所述数据包。 优选地, 所述方法还包括, 所述交换节点在接收到所述第一相邻节点发送 的电信号形式的包时根据所述电信号形式的包中的用于表示包的类型的信息 判断所述电信号形式的包是否为控制包,并在判断出是控制包时执行为所述控 制包对应的所述光信号形式的数据包打开所述光路的操作。
步骤 810的具体实现可以为:判断所述控制包的对应的数据包的目的地是 否为通过接口控制器连接到所述交换节点的互连端点,如果是,将所述接口控 制器确定为所述第二相邻节点, 否则,根据路由算法确定作为备选下一跳的相 邻交换节点,如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端 口没有被占用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换 节点与所有作为备选下一跳的相邻交换节点的光端口均被占用,将通过接口控 制器连接到所述交换节点的存储器确定为所述第二相邻节点。
本发明实施例 8提供的数据传输方法可以由实施例 1提供的互连系统中的 任一交换节点执行。
根据本发明实施例 8提供的数据传输方法,交换节点接收的控制包为电信 号形式且包括该控制包对应的光信号形式的数据包的路由信息,可以直接根据 该控制包中的路由信息进行路由以确定作为下一跳相邻节点,并在该交换节点 上打开用于传输该光信号形式的数据包的光路以传输该数据包。由于在整个传 输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以减少由于 电-光 -电转换带来额外的延时和功耗的问题, 从而提高了数据传输的效率。 参见图 13, 本发明实施例 9提供了一种数据传输方法, 包括:
步骤 910:接口控制器接收所述互连端点发送的电信号形式的数据,其中, 所述互连端点具体可以为处理器或存储器;
步骤 920: 所述接口控制器将所述数据转换为光信号形式的数据包, 并生 成所述数据包的控制包,其中所述控制包为电信号形式且包括所述数据包的路 由信息;
步骤 930: 所述接口控制器向所述交换节点发送所述控制包, 并在间隔偏 置时间后向所述交换节点发送所述数据包, 以便于: 所述交换节点在收到所述 控制包且根据所述控制包所包括的所述数据包的路由信息确定下一跳时,在所 述交换节点上打开从与所述接入控制器连接的光端口至与所述下一跳连接的 光端口的用于传输所述数据包的光路, 并在收到所述光信号形式的数据包时, 通过所述光路传输所述光信号形式的数据包。
优选地, 在步骤 920中, 所述接口控制器在确定所述电信号形式的数据满 足预设条件时, 如, 在确定所述电信号形式的数据的类型为预设类型, 确定所 述电信号形式的数据大于预设阔值时,或确定所述类型为预设类型且所述数据 大于预设阔值时,执行将所述数据转换为所述光信号形式的数据包并生成所述 控制包的操作。
本发明实施例 9提供的数据传输方法可以由实施例 1提供的互连系统中的 任一接口控制器执行。
根据本发明实施例 9提供的数据传输方法,接口控制器将互连端点发送的 电信号形式的数据转换为光信号形式的数据包,生成包括该数据包的路由信息 的电信号形式的控制包发送给交换节点,并在间隔偏置时间后将所述光信号形 式的数据包发送给该交换节点, 所以, 该交换节点可以直接根据该控制包中的 路由信息进行路由以确定下一跳,并打开该交换节点中的用于传输该数据包的 光路以传输该数据包。 由于在整个传输过程中, 控制包、 数据包均无需进行光 -电、 电-光转换, 因此可以减少由于电 -光-电转换带来额外的延时和功耗的问 题, 从而提高了数据传输的效率。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成,也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器,磁盘 或光盘等。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求
1、 一种互连系统, 其特征在于, 所述互连系统包括: 至少两个互连端点、 至少两个接口控制器和 N个交换节点, N为正整数;
所述互连端点中的第一互连端点通过所述接口控制器中的第一接口控制 器连接到所述 N个交换节点中的第一交换节点,所述互连端点中的第二互连端 点通过所述接口控制器中的第二接口控制器连接到所述 N 个交换节点中的第 二交换节点;
所述第一互连端点, 用于向所述第一接口控制器发送电信号形式的数据; 所述第一接口控制器,用于将接收的所述电信号形式的数据转换为光信号 形式的数据包, 并生成所述数据包的控制包, 其中所述控制包为电信号形式并 且包括所述数据包的路由信息; 还用于向所述第一交换节点发送所述控制包, 并在间隔偏置时间后向所述第一交换节点发送所述数据包;
所述 N个交换节点中的任一交换节点,用于在接收到第一相邻节点发送的 所述控制包时, 根据所述数据包的路由信息确定第二相邻节点, 其中, 所述第 一相邻节点具体为与所述任一交换节点相邻的交换节点、或与所述任一交换节 点连接的接口控制器,所述第二相邻节点具体为与所述任一交换节点相邻的交 换节点、或与所述任一交换节点连接的接口控制器,还用于在所述第二相邻节 点为交换节点时向所述第二相邻节点发送所述控制包;为所述数据包在所述任 一交换节点上打开从与所述第一相邻节点连接的第一光端口至与所述第二相 邻节点连接的第二光端口的光路,并在通过所述第一光端口接收到所述数据包 时,通过所述光路将所述数据包传输到所述第二光端口, 并通过所述第二光端 口向所述第二相邻节点发送所述数据包;
所述第二接口控制器, 用于在接收所述第二交换节点发送的所述数据包 时, 将所述数据包转换为电信号形式的数据并发送给所述第二互连端点。
2、 根据权利要求 1所述的互连系统, 其特征在于,
所述第一接口控制器,具体用于在确定所述电信号形式的数据满足预设条 件时,执行将所述数据转换为所述光信号形式的数据包并生成所述控制包的操 作。
3、 根据权利要求 2所述的互连系统, 其特征在于,
所述确定所述电信号形式的数据满足预设条件具体包括,确定所述电信号 形式的数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔值, 或确定所述电信号形式的数据的类型为预设类型且所述电信号形式的数据大 于预设阔值。
4、 根据权利要求 1所述的互连系统, 其特征在于, 所述任一交换节点, 还用于在接收到所述第一相邻节点发送的电信号形式的包时根据所述电信号 形式的包中的用于表示包的类型的信息判断所述电信号形式的包是否为控制 包,并在判断出是控制包时执行为所述控制包对应的所述光信号形式的数据包 打开所述光路的操作。
5、 根据权利要求 1-4任一所述的互连系统, 其特征在于, 所述至少两个 互连端点中的各互连端点具体为处理器或存储器。
6、 根据权利要求 5所述的互连系统, 其特征在于, 所述数据包的路由信 息包括所述数据包的目的地址;
所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述任一交换节点的互连端点,如果是,将所述接口控制器确 定为所述第二相邻节点, 否则,根据路由算法确定作为备选下一跳的相邻交换 节点,如果所述任一交换节点与作为备选下一跳的相邻交换节点相连的光端口 没有被占用,将所述相邻交换节点确定为所述第二相邻节点,如果所述任一交 换节点与所有作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在 通过接口控制器连接到所述任一交换节点的空闲存储器时,将所述接口控制器 确定为所述第二相邻节点。
7、 一种交换节点, 其特征在于, 包括: 路由模块和光开关模块; 所述路由模块, 用于在接收到第一相邻节点发送的电信号形式的控制包 时, 根据所述控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中的 路由信息为所述控制包对应的光信号形式的数据包的路由信息,所述第一相邻 节点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口控 制器, 所述第二相邻节点具体为与所述交换节点相邻的交换节点、或与所述交 换节点连接的接口控制器;还用于在所述第二相邻节点为交换节点时向所述第 二相邻节点发送所述控制包,并指示所述光开关模块为所述控制包对应的光信 号形式的数据包打开从所述交换节点的第一光端口至所述交换节点的第二光 端口的光路, 所述交换节点的第一光端口与所述第一相邻节点的光端口连接, 所述交换节点的第二光端口与所述第二相邻节点的光端口连接;
所述光开关模块, 用于根据所述路由模块的指示打开所述光路, 并用于在 通过所述第一光端口接收到所述数据包时,通过所述光路将所述数据包传输到 所述第二光端口, 并通过所述第二光端口向所述第二相邻节点发送所述数据 包。
8、 根据权利要求 7所述的交换节点, 其特征在于, 所述路由模块, 还用 于在接收到所述第一相邻节点发送的电信号形式的包时根据所述电信号形式 的包中的用于表示包的类型的信息判断所述电信号形式的包是否为控制包,并 在判断出是控制包时指示所述光开关模块为所述控制包对应的所述光信号形 式的数据包打开所述光路。
9、 根据权利要求 7或 8所述的交换节点, 其特征在于, 所述互连端点具 体为处理器或存储器; 所述数据包的路由信息包括所述数据包的目的地址; 所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为 所述第二相邻节点,否则,根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
10、 一种接口控制器, 其特征在于, 包括: 接收单元和处理单元; 所述接收单元,用于接收与所述接口控制器连接的互连端点发送的电信号 形式的数据, 并将接收的数据传输至处理单元;
所述处理单元, 用于从所述接收单元接收所述数据, 将所述数据转换为光 信号形式的数据包, 并生成所述数据包的控制包, 其中所述控制包为电信号形 式且包括所述数据包的路由信息;还用于向与所述接口控制器连接的交换节点 发送所述控制包, 并在间隔偏置时间后向所述交换节点发送所述数据包, 以便 于:所述交换节点在收到所述控制包且根据所述控制包所包括的所述数据包的 路由信息确定下一跳时,在所述交换节点上打开从与所述接入控制器连接的光 端口至与所述下一跳连接的光端口的用于传输所述数据包的光路,并在收到所 述光信号形式的数据包时, 通过所述光路传输所述光信号形式的数据包。
11、 如权利要求 10所述的接口控制器, 其特征在于:
所述处理单元, 具体用于在确定所述电信号形式的数据满足预设条件时, 执行将所述数据转换为所述光信号形式的数据包并生成所述控制包的操作。
12、 根据权利要求 11所述的接口控制器, 其特征在于,
所述处理单元, 具体用于在确定所述电信号形式的数据的类型为预设类 型, 或确定所述电信号形式的数据大于预设阔值, 或确定所述电信号形式的数 据的类型为预设类型且所述电信号形式的数据大于预设阔值时,执行将所述数 据转换为所述光信号形式的数据包并生成所述控制包的操作。
1 3、 一种交换节点, 其特征在于, 包括: 处理器、 存储器和光开关; 所述存储器, 用于存放计算机操作指令;
所述处理器,用于执行所述存储器中存放的计算机操作指令使得所述交换 节点实现如下操作:
在接收到第一相邻节点发送的电信号形式的控制包时,根据所述控制包中 的路由信息确定第二相邻节点, 其中, 所述控制包中的路由信息为所述控制包 对应的光信号形式的数据包的路由信息,所述第一相邻节点具体为与所述交换 节点相邻的交换节点、或与所述交换节点连接的接口控制器, 所述第二相邻节 点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的接口控制 器;
向所述第二相邻节点发送所述控制包;
打开从所述光开关的第一光端口至所述光开关的第二光端口的光路,所述 光开关的第一光端口与所述第一相邻节点的光端口连接,所述光开关的第二光 端口与所述第二相邻节点的光端口连接;
所述光开关, 用于在通过所述第一光端口接收到所述数据包时,通过所述 光路将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第二 相邻节点发送所述数据包。
14、 根据权利要求 1 3所述的交换节点, 其特征在于, 所述互连端点具体 为处理器或存储器; 所述数据包的路由信息包括所述数据包的目的地址; 所述处理器执行所述计算机操作指令具体使得所述交换节点实现如下操 作:根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接口 控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为所 述第二相邻节点, 否则, 根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
15、 根据权利要求 1 3或 14所述的交换节点, 其特征在于, 所述处理器执 行所述计算机操作指令进一步使得所述交换节点实现如下操作:在接收到所述 第一相邻节点发送的电信号形式的包时根据所述电信号形式的包中的用于表 示包的类型的信息判断所述电信号形式的包是否为控制包,并在判断出是控制 包时为所述控制包对应的所述光信号形式的数据包打开所述光路。
16、 一种接口控制器, 其特征在于, 包括: 处理器和存储器;
所述存储器, 用于存放计算机操作指令;
所述处理器,用于执行所述存储器中存放的计算机操作指令使得所述接口 控制器实现如下操作:
在接收到与所述接口控制器连接的互连端点发送的电信号形式的数据时, 将所述数据转换为光信号形式的数据包, 并生成所述数据包的控制包, 其中所 述控制包为电信号形式且包括所述数据包的路由信息;
向与所述接口控制器连接的交换节点发送所述控制包,并在间隔偏置时间 后向所述交换节点发送所述数据包, 以便于: 所述交换节点在收到所述控制包 且根据所述控制包所包括的所述数据包的路由信息确定下一跳时,在所述交换 节点上打开从与所述接入控制器连接的光端口至与所述下一跳连接的光端口 的用于传输所述数据包的光路, 并在收到所述光信号形式的数据包时,通过所 述光路传输所述光信号形式的数据包。
17、 根据权利要求 16所述的接口控制器, 其特征在于, 所述处理器执行 所述计算机操作指令具体使得所述接口控制器实现如下操作:在确定所述电信 号形式的数据满足预设条件时,执行将所述数据转换为所述光信号形式的数据 包并生成所述控制包的操作。
18、 根据权利要求 17所述的接口控制器, 其特征在于, 所述处理器执行 所述计算机操作指令具体使得所述接口控制器实现如下操作:在确定所述电信 号形式的数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔 值,或确定所述电信号形式的数据的类型为预设类型且所述电信号形式的数据 大于预设阔值时,执行将所述数据转换为所述光信号形式的数据包并生成所述 控制包的操作。
19、 一种接入交换节点, 其特征在于, 包括:
如权利要求 1 0-12任一所述的接入控制器,或如权利要求 16-18任一所述 的接入控制器;
如权利要求 8-1 0任一所述的交换节点, 或如权利要求 14-16任一所述的 交换节点。
20、 一种接入互连端点, 其特征在于, 包括:
互连端点;
如权利要求 1 0-12任一所述的接入控制器,或如权利要求 16-18任一所述 的接入控制器。
21、 一种数据传输方法, 其特征在于, 所述方法包括:
交换节点在接收到第一相邻节点发送的电信号形式的控制包时,根据所述 控制包中的路由信息确定第二相邻节点, 其中, 所述控制包中的路由信息为所 述控制包对应的光信号形式的数据包的路由信息,所述第一相邻节点具体为与 所述交换节点相邻的交换节点、或与所述交换节点连接的接口控制器, 所述第 二相邻节点具体为与所述交换节点相邻的交换节点、或与所述交换节点连接的 接口控制器;
所述交换节点向所述第二相邻节点发送所述控制包;
所述交换节点为所述控制包对应的所述数据包在所述交换节点上打开从 与所述第一相邻节点连接的第一光端口至与所述第二相邻节点连接的第二光 端口的光路;
所述交换节点在通过所述第一光端口接收到所述数据包时,通过所述光路 将所述数据包传输到所述第二光端口,并通过所述第二光端口向所述第二相邻 节点发送所述数据包。
22、 根据权利要求 21所述的方法, 其特征在于, 所述方法还包括: 所述交换节点在接收到所述第一相邻节点发送的电信号形式的包时根据 所述电信号形式的包中的用于表示包的类型的信息判断所述电信号形式的包 是否为控制包,并在判断出是控制包时执行为所述控制包对应的所述光信号形 式的数据包打开所述光路的操作。
23、 根据权利要求 21或 22所述的方法, 其特征在于, 所述互连端点具体 为处理器或存储器; 所述数据包的路由信息包括所述数据包的目的地址;
所述根据所述数据包的路由信息确定第二相邻节点具体包括:
根据所述目的地址判断所述光信号形式的数据包的目的地是否为通过接 口控制器连接到所述交换节点的互连端点,如果是,将所述接口控制器确定为 所述第二相邻节点,否则,根据路由算法确定作为备选下一跳的相邻交换节点, 如果所述交换节点与作为备选下一跳的相邻交换节点相连的光端口没有被占 用,将所述相邻交换节点确定为所述第二相邻节点,如果所述交换节点与所有 作为备选下一跳的相邻交换节点的光端口均被占用,在确定存在通过接口控制 器连接到所述交换节点的空闲存储器时,将所述接口控制器确定为所述第二相 邻节点。
24、 一种数据传输方法, 其特征在于, 所述方法包括:
接口控制器接收与所述接口控制器连接的互连端点发送的电信号形式的 数据;
所述接口控制器将所述数据转换为光信号形式的数据包,并生成所述数据 包的控制包, 其中所述控制包为电信号形式且包括所述数据包的路由信息; 所述接口控制器向与所述接口控制器连接的交换节点发送所述控制包,并 在间隔偏置时间后向所述交换节点发送所述数据包, 以便于: 所述交换节点在 收到所述控制包且根据所述控制包所包括的所述数据包的路由信息确定下一 跳时,在所述交换节点上打开从与所述接入控制器连接的光端口至与所述下一 跳连接的光端口的用于传输所述数据包的光路,并在收到所述光信号形式的数 据包时, 通过所述光路传输所述光信号形式的数据包。
25、 根据权利要求 24所述的方法, 其特征在于, 所述接口控制器在确定 所述电信号形式的数据满足预设条件时,执行将所述数据转换为所述光信号形 式的数据包并生成所述控制包的操作。
26、 根据权利要求 25所述的方法, 其特征在于,
所述确定所述电信号形式的数据满足预设条件具体包括,确定所述电信号 形式的数据的类型为预设类型, 或确定所述电信号形式的数据大于预设阔值, 或确定所述电信号形式的数据的类型为预设类型且所述电信号形式的数据大 于预设阔值。
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