WO2016107242A1 - 网络控制方法及相关装置 - Google Patents

网络控制方法及相关装置 Download PDF

Info

Publication number
WO2016107242A1
WO2016107242A1 PCT/CN2015/091879 CN2015091879W WO2016107242A1 WO 2016107242 A1 WO2016107242 A1 WO 2016107242A1 CN 2015091879 W CN2015091879 W CN 2015091879W WO 2016107242 A1 WO2016107242 A1 WO 2016107242A1
Authority
WO
WIPO (PCT)
Prior art keywords
transport network
network channel
channel
traffic
data communication
Prior art date
Application number
PCT/CN2015/091879
Other languages
English (en)
French (fr)
Inventor
操时宜
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
Publication of WO2016107242A1 publication Critical patent/WO2016107242A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks

Definitions

  • the present application relates to the field of communications technologies, and more particularly to a network control method and related apparatus.
  • the communication bearer network is mainly composed of a data network and a two-layer network of the transport network.
  • the data communication network is composed of routers or switches
  • the transmission network is composed of Wavelength Division Multiplexing (WDM) network equipment and/or Optical Transport Network (OTN) equipment (see figure 1).
  • WDM Wavelength Division Multiplexing
  • OTN Optical Transport Network
  • the service data of the data communication network is encapsulated into the channel of the transport network, and transmitted in the transport network, and will be decapsulated when the destination of the data communication network is reached, and the service data is sent to the destination of the data communication network.
  • the joint control of the data communication network and the transport network is very important. Only the two-layer network can perform the joint control to optimize the configuration of the entire communication bearer network and reduce the cost of the whole network.
  • a common scenario for joint control of a data communication network and a transport network is optical bypass (also called IP Offloading).
  • optical bypass also called IP Offloading
  • Router/switch a" and “router/switch c” have direct connections
  • Router/switch c" and “router/switch x” have direct connections
  • Router/switch a” There is no direct connection to "router/switch x”. That is, the router/switch a to "router/switch c" has only one hop, and "router/switch a" to "router/switch x" has two hops.
  • a transport network channel can be established in the transport network from "router/switch a" to "router/switch x".
  • the service data transmission path from "router/switch a" to "router/switch x" can be changed to: router/switch a->WDM/OTN device 1->WDM/OTN device 3->WDM/OTN device 5- >WDM/OTN Device 6->Router/Switch x.
  • the existing optical layer bypass has complicated design problems, mainly in:
  • the data communication network and the transmission network are required to support the same control plane technology.
  • Generalized Multi-Protocol Label Switching For example, Generalized Multi-Protocol Label Switching
  • GMPLS Global System for Mobile Communications
  • ASON Automatically Switched Optical Network
  • a new request is generally initiated by the data communication network.
  • the data communication network initiates a connection request to establish a new transport network channel, which requires monitoring in advance that it is necessary to establish a new connection, and such monitoring generally needs to view the header information of the service data unit of the data communication network, according to the header. Different parts of the information are classified by flow and counted according to the flow.
  • the purpose of the present application is to provide a network control method and apparatus to simplify the complexity of network control.
  • a network control method comprising:
  • the transport network channel is configured to transmit a service sent by the first device in the data communication network to the second device data;
  • the transport network channel is closed.
  • the detecting the traffic information of the service data from the data communication network in the transport network channel includes:
  • the adjusting the bandwidth of the transport network channel according to the traffic information specifically:
  • the adjusting the bandwidth of the transport network channel according to the traffic information specifically:
  • the bandwidth of the transport network channel is reduced.
  • the detecting the traffic information of the service data from the data communication network in the transport network channel includes:
  • the closing the transport network channel according to the traffic information includes:
  • the transport network channel is closed.
  • the detecting the input traffic in a unit time of the service data from the data communication network in the transport network channel includes:
  • the service data from the data communication network is stored by using the cache before being encapsulated in a container corresponding to the transport network channel;
  • the input traffic is determined based on the output traffic of the transport network channel and the amount of data populated in the cache.
  • the detecting the change speed of the input traffic per unit time of the service data from the data communication network in the transport network channel includes:
  • the service data from the data communication network is stored by the cache before being encapsulated in a container corresponding to the transport network channel.
  • the method further includes:
  • the transport network channel is closed.
  • a network control apparatus including:
  • An information acquiring unit configured to acquire device distribution information of the data communication network and network topology information of the transmission network
  • a transport network channel establishing unit configured to establish a transport network channel according to device distribution information of the data communication network and network topology information of the transport network; the transport network channel is configured to transmit the first in the data communication network The service data sent by the device to the second device;
  • a traffic information detecting unit configured to detect traffic information of the service data from the data communication network in the transport network channel
  • a bandwidth adjustment unit configured to adjust a bandwidth of the transport network channel according to the traffic information; or, according to the traffic information, shut down the transport network channel.
  • the traffic information detecting unit is specifically configured to:
  • the bandwidth adjustment unit is specifically configured to:
  • the bandwidth adjustment unit is specifically configured to:
  • the bandwidth of the transport network channel is reduced.
  • the traffic information detecting unit is specifically configured to:
  • the bandwidth adjustment unit is specifically configured to:
  • the transport network channel is closed.
  • the traffic information detecting unit is specifically configured to:
  • the service data from the data communication network is stored by using the cache before being encapsulated in a container corresponding to the transport network channel;
  • the input traffic is determined based on the output traffic of the transport network channel and the amount of data populated in the cache.
  • the traffic information detecting unit is specifically configured to:
  • the service data from the data communication network is stored by the cache before being encapsulated in a container corresponding to the transport network channel.
  • the transport network channel establishing unit is further configured to:
  • the transport network channel is established again in a preset time sequence.
  • the establishment of the transport network channel is based on the information independently obtained by the transport network (the device distribution information of the data communication network, the network topology of the transport network, and the physical bandwidth of the connection of the transport network devices), and the obtaining of the above information. It is not necessary to process the data of the data communication network, nor does it require the devices in the transport network to interact with the devices in the data communication network.
  • the establishment of the transport network channel requires both the data communication network and the transport network to support the same control plane technology (for example, GMPLS/ASON), or more information that requires two layers of network interaction, and needs to be supported by the data communication network. The request is initiated and it is necessary to monitor in advance the need to establish a new connection. Compared with the two, the solution provided by the present application does not require the data communication network and the transport network to support the same control plane technology, nor does it need to initiate a new request by the data communication network, thereby simplifying the complexity of the network control.
  • FIG. 1 is a schematic diagram of a network architecture of a communication bearer network in the prior art
  • Figure 2a is a schematic structural view of a transport network
  • 2b is a flowchart of an embodiment of a network control method according to the present application.
  • FIG. 3 is a schematic diagram of flow information and a transmission network channel
  • FIG. 4 is a schematic structural diagram of a network control device in the present application.
  • FIG. 5 is a schematic diagram of a network architecture of scenario 1 of a network control method to which the present application is applied;
  • FIG. 6 is a flowchart of an implementation manner of a network control method of the present application in scenario 1.
  • FIG. 7 is a schematic structural diagram of a master device (or an edge device) in scenario 1 in the present application;
  • 8a is a schematic diagram of a hardware structure of a master device (or an edge device) in scenario 1 of the present application;
  • FIG. 8b is a schematic diagram of another hardware structure of a master device (or an edge device) in scenario 1 of the present application;
  • 9a is a schematic diagram of another hardware structure of a master device (or an edge device) of the present application.
  • 9b is a schematic diagram of another hardware structure of a master device (or an edge device) of the present application.
  • FIG. 10 is a schematic diagram of a network architecture of scenario 2 of a network control method to which the present application is applied;
  • FIG. 11 is a flowchart of an implementation manner of a network control method of the present application in scenario 2;
  • 12a is a schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application;
  • FIG. 12b is another structure of the master device (or edge device) in scenario 2 of the present application. schematic diagram;
  • 13a is another schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • FIG. 13b is another schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • FIG. 14 is a schematic diagram of a network architecture of scenario 3 in which the network control method of the present application is applied;
  • Line side interface the interface between the transport network devices is a line side interface
  • Client side interface the interface connecting the transport network device and the router/switch in the data communication network is a client side interface
  • Edge device A device in a transport network that connects a router/switch in a data communication network is called an edge device;
  • Intermediate device A device in a transport network that is not connected to a router/switch in a data communication network is called an intermediate device.
  • the edge device or the intermediate device is relative to the service data transmission path (that is, the transport network channel).
  • the same transport network device c is an intermediate device with respect to the transport network channel 1, and is opposite to the transport network communication.
  • it is an edge device.
  • the transport network channel 1 refers to the channel along the device A, the device B, and the device C to the device D;
  • the transport network channel 2 refers to the channel along the device A, the device B, and the device C.
  • the embodiment of the present application provides a network control method that can be used for joint control between a data communication network and a transport network.
  • the data communication network may include an Ethernet, a MPLS (Multi-Protocol Label Switching) network, an IP (Internet Protocol) network, a SAN (Storage Area Network), and an ATM (Asynchronous Transfer Mode).
  • Asynchronous transfer mode one or more of the networks (multiple mixed networks of different technologies);
  • the transport network may include a WDM (Wavelength Division Multiplexing) network, an OTN (Optical Transport Network, see the standard ITU-T G.709), and an SDH (Synchronous Digital Hierarchy).
  • ITU-T G.707 transport network
  • SONET Synchronous Optical Network, see standard ANSI T1.105
  • PSCL Physical Coding Sublayer Lane
  • the above network control method may include the following steps:
  • S1 acquiring device distribution information of the data communication network and network topology information of the transmission network;
  • the device distribution information of the data communication network may represent the number of devices of the data communication network, and may also represent a connection relationship between the device of the data communication network and the transport network device, and the network topology information of the transport network may represent The connection relationship between the devices of the transport network.
  • S2 establishing a transport network channel according to the device distribution information of the data communication network and the network topology information of the transport network; the transport network channel is configured to transmit the first device in the data communication network to send to the second device Business data;
  • a transport network channel that may be required between devices in the data communication network can be known.
  • a transport network channel can be established between data communication network devices that do not have a transport network channel established.
  • the preset can be followed.
  • a transport network channel is established between devices that do not have a transport network channel.
  • the transport network channel Based on the network topology information of the transport network, it may be determined how to establish the transport network channel. For example, when it is required to establish a transport network channel between the device A and the device B of the data communication network, according to the network topology of the transport network, it can be determined which transport network devices are established by which transport network devices are the shortest between the device A and the device B. Transport network channel.
  • Establishing a transport network channel can trigger the redistribution of traffic data traffic in the data communication network.
  • the service data in the above data communication network may include an Ethernet packet in an Ethernet, a packet in an MPLS network, an IP packet in an IP network, a data frame in a SAN, and an ATM.
  • One or more of ATM cells in the network may include an Ethernet packet in an Ethernet, a packet in an MPLS network, an IP packet in an IP network, a data frame in a SAN, and an ATM.
  • the above-mentioned transport network path is a transport entity, which refers to the path of the transport network channel layer (the meaning of the path and channel layer can refer to ITU-T G.805 and G.806), which may include wavelengths in the WDM network ( Wavelength), ODU (Optical Channel Data Unit) channel or optical channel (Optical Channel, see ITU-T G.709) in OTN network, VC (Virtual Container) channel in SDH network, VT (Virtual Tributary) in SONET network One or more of the channels and the PCSL in the PCSL based transport network.
  • the established transport network channel has an initial bandwidth.
  • the device distribution information of the data communication network and the network topology information of the transport network are information that the transport network device can independently obtain. That is to say, the transport network device does not have to process the service data of the data communication network (for example, stream classification according to different header information and statistics according to the flow), that is, information that can be obtained.
  • the transport network device does not have to process the service data of the data communication network (for example, stream classification according to different header information and statistics according to the flow), that is, information that can be obtained.
  • the reason for obtaining the device distribution information of the data communication network is that the purpose of establishing the transmission network channel is to directly connect the routers/switches that are not directly connected in the data communication network, so the device distribution information through the data communication network is needed. Determine which two routers/switches can be directly connected through the transport network channel.
  • the establishment of the transport network channel does not happen overnight. Can build one at a time Or a plurality of transport network channels, such as periodically establishing a transport network channel.
  • the change of the transport network channel may cause automatic redistribution of traffic in the data communication network, for example, causing routing in the IP network. Updates result in traffic redistribution.
  • the latter steps are performed after the traffic data traffic in the data communication network is reallocated.
  • the detected traffic information information of the service data of the data communication network at the entrance of the transmission network channel may be detected.
  • the traffic information of the service data of the data communication network at the entrance of the transport network channel is specifically obtained by detecting the traffic of the service data by the edge device of the transport network channel, and performing statistical analysis on the traffic.
  • the detecting the traffic information of the service data from the data communication network in the transport network channel may specifically include: detecting the input traffic in a unit time of the service data from the data communication network in the transport network channel, and detecting the transmission One or more of the rate of change of the input traffic per unit time of the service data from the data communication network in the network channel.
  • the transport network channel is closed.
  • the transport network channel may be reserved at this time, and the bandwidth of the transport network channel may be gradually adjusted according to the traffic information.
  • the transport network channel When it is determined by the traffic information that the data traffic in the transport network channel is small or even no data traffic, it indicates that the transport network channel does not have to be established, and the transmission effect is small.
  • the transport network channel can be closed at this time.
  • the transport network channel may be re-established after the transport network channel preset duration is turned off (the closed transport network channel may be marked as not established). For example, the time to close a transport network channel is 12:00. After 7 hours, the transfer can be re-established. Net channel.
  • the establishment of the transport network channel is based on information independently obtained by the transport network (device distribution information of the data communication network, network topology information of the transport network), and the obtaining of the above information does not require service data of the data communication network. It can be obtained by processing, and does not require devices in the transport network to interact with devices in the data communication network.
  • the establishment of the transport network channel requires both the data communication network and the transport network to support the same control plane technology (for example, GMPLS/ASON), or more information that requires two layers of network interaction, and needs to be supported by the data communication network.
  • the request is initiated and it is necessary to monitor in advance the need to establish a new connection.
  • the solution provided by the present application does not require the data communication network and the transport network to support the same control plane technology, that is, the transport network adopting the technical solution of the present application can and the data communication network adopting different control plane technologies. Hybrid networking for cross-layer control and optimization, simple design.
  • connection request initiated by the data communication network is detected when it is necessary to establish a new connection, and then an attempt is made to establish a connection in the transport network.
  • the connection request includes the desired transmission network channel bandwidth information. Therefore, if the establishment is successful, the bandwidth of the established channel is the desired bandwidth. In this way, from monitoring to necessary, it takes a long time to transmit service data using the established transport network channel, and the speed is slow.
  • the establishment is not necessary to establish a new connection. To some extent, it is equivalent to establishing a transport network channel in advance. After establishing the transport network channel, only the traffic information of the service data in the transport network channel needs to be detected. It is easy to trigger bandwidth adjustment or turn off the transport network channel. In this way, when the service data needs to be directly transmitted between the two routers/switches, the established transport network channel can be directly used, and the bandwidth of the transport network channel can be quickly adjusted, which takes a short time and is relatively fast.
  • the foregoing steps acquire the number from the transport network channel.
  • the traffic information of the service data of the communication network may include: periodically acquiring the traffic information of the service data in the transport network channel.
  • the acquired may be the input traffic per unit time of the service data from the data communication network in the transport network channel, and/or the input traffic change speed per unit time.
  • the step of adjusting the bandwidth of the transport network channel according to the traffic information; or, according to the traffic information, closing the transport network channel the method may include:
  • the transport network channel is controlled based on the traffic information corresponding to the most recent period of the transport network channel.
  • the adjusting the bandwidth of the transport network channel according to the traffic information may specifically include:
  • the adjusting the bandwidth of the transport network channel according to the traffic information which may specifically include:
  • the greater than the first preset threshold indicates that the establishment of the transport network channel is necessary.
  • the transport network channel may be closed.
  • less than the fourth preset threshold indicates that the establishment of the transport network channel is unnecessary.
  • the service data from the data communication network may be stored in a cache before being encapsulated in a container corresponding to the transport network channel.
  • the detecting the input traffic in the unit time of the service data from the data communication network in the transport network channel may specifically include:
  • Obtaining an amount of data filled in the cache determining the input traffic according to a bandwidth of the transport network channel and an amount of data filled in the cache.
  • the amount of data filled in the cache is proportional to the input, regardless of other factors.
  • the detecting the change speed of the input traffic per unit time of the service data from the data communication network in the transport network channel may specifically include:
  • the input traffic change speed is proportional to the amount of data filled in the cache. Speed of change.
  • the information of the input traffic can be determined according to the information of the amount of data filled in the cache, and the statistical analysis process for the input traffic is simplified.
  • the bandwidth adjustment of the transport network channel can be continuously cycled, so that the bandwidth setting of the transport network channel can be adapted to the data communication network in real time. Better joint control and cross-layer optimization.
  • the following steps may be further included:
  • the service data of the data communication network enters from the client side interface of the edge device, and is output from the line side interface of the edge device to the transport network channel.
  • the edge device caches the service data and processes it accordingly (for example, distribution, encapsulation, etc.).
  • the edge device is regarded as a water bucket
  • the customer side interface is equivalent to the water inlet
  • the line side interface is equivalent to the water outlet
  • the transmission network channel is equivalent to the pipeline.
  • the bandwidth of the transmission network channel is equivalent to the size of the pipeline, and the size and the outlet of the outlet The dimensions are the same.
  • the bandwidth of the transport network channel is fixed before the transport network channel is closed or the transport network channel is not adjusted, and the flow rate of the water outlet (line side interface) is also fixed.
  • Water inlet The larger the input flow rate (line side interface), the more water (service data) is trapped in the bucket (edge device), so the pressure on the bucket (edge device) is larger, which requires the transmission network channel to be enlarged.
  • Bandwidth On the contrary, it is necessary to reduce the bandwidth of the transport network channel. When the input traffic is small enough, consider turning off the transport network channel.
  • the difference in flow between the input flow and the output flow is equivalent to the change in the water line in the bucket (edge device). If the water level line has been rising, it indicates that the more water (service data) is trapped in the bucket (edge equipment), which requires increasing the bandwidth of the transmission network channel; otherwise, it is necessary to reduce the bandwidth of the transmission network channel.
  • controlling the foregoing transmission network channel may include:
  • Step A determining whether the size of the input traffic is greater than a preset threshold
  • Step B closing the transmission network channel based on the determination result that the input traffic size is not greater than a preset threshold
  • the transport network channel is closed unless an abnormality occurs. Therefore, when there is no abnormality in the transport network channel, even if the input traffic of the service data in the data communication network is small, the transport network channel still occupies the bandwidth. This is not conducive to network optimization.
  • closing the transport network channel can release the bandwidth, which can facilitate the utilization of bandwidth resources more efficiently. It should be noted that, after the transport network channel is closed, the untransferred portion of the service data may be merged into another transport network channel for transmission.
  • Step C Adjust the bandwidth of the transport network channel based on the determination result that the input traffic size is greater than a preset threshold.
  • the embodiment of the present application also claims a network control device.
  • the device can In the embodiment of the present application, the device is also referred to as a master device.
  • FIG. 4 is a schematic structural diagram of a network control device in the present application.
  • the network control device may be a transport network device.
  • the apparatus may include:
  • the information acquiring unit 401 is configured to acquire device distribution information of the data communication network and network topology information of the transport network;
  • a transport network channel establishing unit 402 configured to establish a transport network channel according to device distribution information of the data communication network and network topology information of the transport network; the transport network channel is configured to transmit the first in the data communication network Service data sent by a device to the second device;
  • the traffic information detecting unit 403 is configured to detect traffic information of the service data from the data communication network in the transport network channel;
  • the bandwidth adjustment unit 404 is configured to adjust a bandwidth of the transport network channel according to the traffic information, or close the transport network channel according to the traffic information.
  • the network control device of the present application since the establishment of the transport network channel is based on information independently obtained by the transport network (device distribution information of the data communication network, network topology of the transport network, physical bandwidth of the connection of the transport network devices), the above information
  • the acquisition can be obtained without processing the service data of the data communication network, and the devices in the transport network are not required to interact with the devices in the data communication network.
  • the establishment of the transport network channel requires both the data communication network and the transport network to support the same control plane technology (for example, GMPLS/ASON), or more information that requires two layers of network interaction, and needs to be supported by the data communication network.
  • the request is initiated and it is necessary to monitor in advance the need to establish a new connection.
  • the solution provided by the present application does not require the data communication network and the transport network to support the same control plane technology, nor does it need to initiate a new request by the data communication network, thereby simplifying the complexity of the network control.
  • the traffic information detecting unit 403 is specifically configured to:
  • the bandwidth adjustment unit 404 is specifically configured to:
  • the bandwidth adjustment unit 404 is specifically configured to:
  • the bandwidth of the transport network channel is reduced.
  • the traffic information detecting unit 403 is specifically configured to:
  • the bandwidth adjustment unit 404 is specifically configured to:
  • the transport network channel is closed.
  • the traffic information detecting unit 403 is specifically configured to:
  • the service data from the data communication network is stored by using the cache before being encapsulated in a container corresponding to the transport network channel;
  • the input traffic is determined based on the output traffic of the transport network channel and the amount of data populated in the cache.
  • the traffic information detecting unit 403 is specifically configured to:
  • the service data from the data communication network is stored by the cache before being encapsulated in a container corresponding to the transport network channel.
  • the transport network channel establishing unit 402 is further configured to:
  • the transport network channel is established again in a preset time sequence.
  • Scenario 1 Any network of data communication network and transmission network.
  • FIG. 5 is a schematic diagram of a network architecture of scenario 1 of a network control method to which the present application is applied.
  • the data communication network takes an IP network as an example (that is, the data communication network is mainly composed of a router), and the transmission network takes an OTN as an example (that is, the transmission network is mainly composed of an OTN device), but obviously, the embodiment of the present application A method and apparatus employed are equally applicable to the case of a hybrid network of data communication networks and transport networks employing the other techniques described above.
  • FIG. 6 is a flowchart of an embodiment of a network control method of the present application in scenario 1.
  • S601 Determine one of the transport network devices as a master device, and the other is a slave device.
  • any one of the transport network devices is the master device.
  • the transport network device located at the center of the transport network topology may be selected as the master device.
  • S602 Establish a transport network channel according to information independently obtained by the transport network, to trigger reallocation of service data traffic in the data communication network.
  • the established transport network channel has an initial bandwidth. Moreover, the established transport network channel can be unidirectional or bidirectional.
  • the master device can list the router/switch pairs that are not directly connected in the data communication network, and periodically establish a transport network channel between the router/switch pairs without direct connection in a certain order.
  • the transport network channel can be triggered by the edge device of the transport network channel to be established.
  • the edge device as the master device can send control communication information to other transport network devices involved in the transport network channel to be established, to notify each transport network device to establish a transport network channel.
  • the other is that the device at the source of the transport network channel starts to start the relevant protocol, triggers the handshake with the device in the transport network channel to be established, and the devices in the transport network channel to be established shake hands in sequence, and finally establishes Transport network channel.
  • the specific establishment method can refer to the existing establishment manner, and will not be described herein.
  • the master device is not the edge device of all transport network channels. Therefore, There are two cases to establish a transport network channel:
  • the master device can trigger the control establishment.
  • the master device notifies the slave device to trigger control establishment.
  • the master device determines, by using configuration information of the transport network, a bandwidth constraint relationship associated with each transport network channel (which may be represented as an i-th transport network channel).
  • the above configuration information may include a transport network topology and a channel configuration.
  • the channel configuration may specifically include a channel bandwidth, a connection relationship of the channel, and the like.
  • Correlation with a transport network channel may include "directly related to the transport network channel” and "indirectly related to the transport network channel.”
  • the bandwidth constraint relationship can be embodied in the form of an equation or an inequality.
  • the bandwidth of the transport network channel x1 is represented as WPx1 (W represents bandwidth, P represents channel), and WPx1 to WPxk are encapsulated in a large transport network channel, the bandwidth of the large transport network channel is at most mGbps, then WPx1+WPx2+ ...+WPxk ⁇ mGbps.
  • WPx1, WPy2, ..., WPyk the following inequalities may also need to be met between WPx1, WPy2, ..., WPyk:
  • WPx1+WPx2+...+WPxk ⁇ mGbps and "WPx1+WPy2+...+WPyk ⁇ nGbps” embody "directly related to WPx1".
  • WPx1 satisfies the inequality "WPx1+WPx2+...+WPxk ⁇ mGbps", and "WPx2" in the inequality needs to satisfy "WPx2+WPy2+...+WPyk”NGbps".
  • the value of WPx2 will affect the value of WPx1.
  • WPx2+WPy2+...+WPyk” NGbps is "indirectly related to WPx1".
  • the master device acquires traffic information of the service data in the i-th transport network channel (corresponding to the foregoing step S2).
  • the i-th transport network channel uses the master device as the edge device. Main design The service data traffic at the entrance of the i-th transport network channel is detected, and the traffic information of the service data in the i-th transport network channel is obtained.
  • the i-th transport network channel uses the slave device as the edge device. Then, the slave device can detect the service data traffic at the entrance of the i-th transport network channel, obtain the traffic information of the service data in the i-th transport network channel, and submit the traffic information to the master device.
  • the above flow information includes the input flow rate and the change in the flow difference between the input flow and the output flow.
  • step S605 The master device determines whether the input traffic size at the entrance of the i-th transport network channel is not greater than a preset threshold, and if yes, proceeds to step S606, otherwise proceeds to step S607.
  • Steps S605 to S607 correspond to the aforementioned step S3. It should be noted that, although the steps S603-S607 are for the i-th transport network channel, since i can take any value (i is not less than 1, not more than N, N is the total number of transport network channels), step S603 to S607 is actually the action taken on each transport network channel.
  • step S606 The i-th transport network channel is closed, and the bandwidth of the i-th transport network channel in the bandwidth constraint relationship is recorded as 0, and the process returns to step S602 (waiting for the next cycle to perform step S602);
  • the master device is not the edge device of all transport network channels. Therefore, closing the transport network channel involves two situations:
  • the transport network channel can be closed by the master device triggering control.
  • the master device for establishing a transport network channel with the slave device as the edge device, notifies the slave device to trigger control to close the transport network channel.
  • S607 Calculate a bandwidth value required by the foregoing transport network channel (the i-th transport network channel in this step) based on the bandwidth constraint relationship and the traffic information of the i-th transport network channel, and calculate the bandwidth of the transport network channel. Adjusting to the above-mentioned required bandwidth value, the process returns to step S602 (waiting for the next cycle to execute step S602).
  • the traffic difference between the input traffic and the output traffic of the transport network channel x1 (that is, the i-th transport network channel) is increasing, and WPx1 needs to be increased.
  • the bandwidth of the transport network channel x1 can be adjusted to a maximum value, or a bandwidth can be determined from the value range of the WPx1, and the bandwidth of the transport network channel x1 can be adjusted to the determined bandwidth.
  • the master device is not the edge device of all transport network channels. Therefore, "adjusting the bandwidth of the above transport network channel to the above required bandwidth value" includes two cases:
  • the bandwidth of the transport network channel can be adjusted to the required bandwidth value by the master device trigger control.
  • the master device for establishing a transport network channel with the slave device as the edge device, notifies the slave device to trigger control to adjust the bandwidth of the transport network channel to the required bandwidth value.
  • the master device is configured to uniformly determine the bandwidth of the transport network channel periodically, and periodically manage the bandwidth of the transport network channel.
  • the master device can cycle count to generate a calculation cycle number and send it to the slave device (the frame number can be inserted in the OTN or SDH frame).
  • the slave device feeds back the traffic information of the service data in the relevant transport network channel monitored according to the calculation period.
  • the master device calculates the constraint between the bandwidths of the transport network channels according to the configuration of the transport network (for example, the network topology, the transport network channel configuration, etc.), according to the bandwidth constraint, and the traffic of the service data in each transport network channel in the same calculation period.
  • the information calculates the required bandwidth value of the transport network channel.
  • the master device can send the bandwidth of each transport network channel and the corresponding calculation period to the corresponding slave device, and the master device and/or the slave device trigger and control the corresponding transport network pass.
  • the channel performs bandwidth adjustment.
  • each device manages a portion of the transport network channel, for example, a transport network channel that manages it as an edge device.
  • the above steps of Figure 6 are performed by each master device.
  • the primary device can adjust the bandwidth to the calculated required bandwidth value at one time. If you need to increase the bandwidth (for example, the current bandwidth is 50M and the calculated required bandwidth value is 100M), you need to adjust the bandwidth in small steps, for example, to adjust the bandwidth from 50M to 55M. After a small step is raised, each master device needs to exchange information, re-determine the bandwidth constraint, and then recalculate the required bandwidth value. If it needs to be adjusted, it will continue to increase a small step, so that the loop is repeated until it is no longer needed. bandwidth.
  • FIG. 7 is a schematic structural diagram of a master device (or an edge device) in scenario 1 in the present application.
  • the transport network intermediate device maintains the existing structure and functionality. As shown in Figure 7:
  • the master device (referred to as an edge device) may include: a control unit 1, a transmission direction service data processing unit 2, and a channel encapsulation unit 3.
  • the basic functions of each unit are as follows:
  • the control unit 1 is configured to: according to the information independently obtained by the transport network, the channel encapsulating unit 3 establishes a transport network channel to trigger the redistribution of service data traffic in the data communication network; and obtain the transmit direction service data processing unit 2 or the channel encapsulation unit 3 Providing the traffic information of the service data in the foregoing transport network channel, where the traffic information may include an input traffic size, and a change in the traffic difference between the input traffic and the output traffic, that is, a traffic change speed; and, based on the traffic information indication
  • the channel encapsulating unit 3 controls the above-mentioned transport network channel (the above control includes closing the transport network channel or adjusting the bandwidth of the transport network channel).
  • the sending direction service data processing unit 2 is configured to process the service data from the data communication network according to the first configuration information sent by the control unit 1, and distribute the data to the channel encapsulating unit 3;
  • the channel encapsulation unit 3 is configured to: establish a transport network channel according to an indication (second configuration information) of the control unit 1, and control the transport network channel according to an instruction of the control unit 1.
  • the control unit 1 can be a processor on the main control line card (the line card can also be called a board or a board), and the sending direction service data processing unit 2 can be a hardware module (for example, a chip) on the branch line card.
  • the package unit 3 can be a hardware module (such as a chip) on a branch card or a line card.
  • the transmission direction service data processing unit 2 and the channel encapsulation unit 3 may also be located on the same board.
  • the transmission direction service data processing unit 2 or the channel encapsulation unit 3 can also be used to provide traffic information of the service data in the transmission network channel.
  • the service data may be buffered in the transmission direction service data processing unit 2 or cached in the channel encapsulation unit 3. If the service data is cached in the transmission direction service data processing unit 2, the traffic information (cache fill status) is provided by the transmission direction service data processing unit 2, and if the service data is cached in the channel encapsulation unit 3, it is provided by the channel encapsulation unit 3. Traffic information (cache fill status).
  • FIG. 8a is a schematic diagram of a hardware structure of a master device (or an edge device) in scenario 1 of the present application.
  • the channel encapsulating unit 3 in the above-mentioned master device includes a cache module 31 and a transport network channel setting and signal encapsulating module 32.
  • the sending direction service data processing unit 2 includes a sending direction data communication service data processing.
  • Module 21, control unit 1 includes a controller 11.
  • controller 11 can be used to:
  • the transport network channel setting and signal encapsulation module 32 establishes a transport network channel to trigger the redistribution of traffic data traffic in the data communication network.
  • the slave device when acting as the master device, according to the information independently obtained by the transport network, the slave device triggers control to establish a transport network channel.
  • the output port of the transmission direction data service data processing module 21 is configured according to the established transport network channel (the first configuration information is sent to the transmission direction data service data processing module 21).
  • the transmission direction number communication service data processing module 21 is connected to the side of the cache module 31 to recognize It is the exit.
  • the output port specifically refers to an output port in which the transmission direction data service data processing module 21 outputs the service data to the cache module 31.
  • one transport network channel corresponds to one output port. Therefore, when the transport network channel needs to be established or closed, the output port of the transmit direction data service data processing module 21 needs to be configured.
  • the side of the transmission direction data communication service data processing module 21 that is not connected to the cache module 31 has an input port, and can be considered to be connected to a data communication network (for example, an IP network).
  • a data communication network for example, an IP network
  • the input port of the transmit direction data service data processing module 21 may correspond to N output ports (N Greater than 1).
  • N the number of output ports corresponding to the input port needs to be increased or decreased accordingly. This will cause the routing table to change. After the IP network detects the change of the routing table, it will automatically trigger the redistribution of service data traffic.
  • transport network configuration information such as network topology, channel configuration, etc.
  • this is the primary device function, which may not be available as the edge device of the slave device.
  • the above flow information (cache status) is sent by the cache module 31 and/or the controller of the slave device (periodic or aperiodic).
  • Trigger and control the transport network channel settings and signal encapsulation module 32 adjusts the bandwidth of the transport network channel to the desired bandwidth value.
  • the sending direction data service data processing module 21 can be used to:
  • the traffic data output by the traffic data processing module 21 is stored in the queue.
  • the queue is in one-to-one correspondence with the transport network channel and is a buffer allocated for the transport network channel.
  • the cache module 31 can be used to:
  • the buffered data is sent to the transport network channel settings and signal encapsulation module 32;
  • the transport network channel setup and signal encapsulation module 32 can be used to:
  • a container here can refer to a data frame.
  • the transport network transports signaling and traffic data together at a fixed location in the data frame. As long as the frame header is known, the signaling and service data can be extracted separately.
  • Invalid data can be removed during encapsulation, such as GFP-F (Generic Framing Procedure-Frame Mapped) in OTN networks or SDH networks.
  • GFP-F Generic Framing Procedure-Frame Mapped
  • the edge device when establishing, shutting down, and adjusting, can send control communication information to other transport network devices.
  • the control communication information is sent out in the overhead of being encapsulated into a data frame.
  • the traffic information reported from the device to the master device is also encapsulated in the overhead of the container corresponding to the transport network channel, and is sent by the transport network channel setting and signal encapsulation module 32.
  • FIG. 8b is a schematic diagram of another hardware structure of a master device (or an edge device) in scenario 1 of the present application. Compared with Figure 8a, the main functions of the new module are as follows:
  • the photoelectric conversion module is mainly used for converting the optical signal received in the transmission direction into an electrical signal (including the input service data) and sending it to the transmission direction digital communication data processing module 21.
  • the transmission direction electro-optical conversion module is mainly used for: converting the transmission network channel setting and the electrical signal sent by the signal encapsulating module 32 (the signal corresponding to the transmission network channel) into an optical signal for transmission.
  • the photoelectric conversion module function is mainly used to: convert the optical signal received in the receiving direction into an electrical signal, and send it to the transmission network channel signal decapsulation module.
  • the transmission network channel signal decapsulation module is mainly used for: extracting service data from the transmission network channel container in the received electrical signal according to the transmission network channel configuration information sent by the controller 11, and sending the service data to the receiving direction Processing module processing.
  • the channel configuration information herein is divided into two cases: one case is to configure the transport network channel according to the bidirectional channel, in this case, the channel configuration information and the controller received by the transport network channel signal decapsulation module.
  • the channel configuration information sent to the transport network channel setting and signal encapsulation module 32 together describes the bidirectional channel configuration: that is, the channel bandwidths of the two directions in the bidirectional channel are the same and the connection relationship is the same.
  • the so-called connection relationship is consistent, which means that the edge nodes and the intermediate nodes passing through in the two directions are the same. For example, one direction is A->B->C, and the other direction is C->B->A.
  • Another situation is to configure the transport network channel as a one-way channel.
  • the channel configuration information received by the transport network channel signal decapsulation module and the channel configuration information sent by the controller 11 to the transport network channel setting and signal encapsulation module 32 respectively describe different one-way channels, respectively.
  • the unidirectional channel bandwidth can be different and the connection relationship can be different. For example, one of the two unidirectional channel bandwidths is 5M, one is 10M, and one unidirectional channel passes through A->B->C, and the other unidirectional channel passes through C->D->E->A.
  • the receiving direction data service data processing module is mainly used for processing the service data sent by the transport network channel signal decapsulation module to be distributed to its own output port.
  • the function of the electro-optical conversion module is mainly used to: convert the electrical signal sent from the output port of the receiving direction data processing data processing module into an optical signal and send it out.
  • FIG. 9a is a schematic diagram of another hardware structure of a master device (or an edge device) of the present application.
  • FIG. 9b is a schematic diagram of another hardware structure of a master device (or an edge device) of the present application.
  • the channel encapsulation unit 3 in the above-mentioned master device includes a transmission network channel setting and signal encapsulation module 32, and the transmission direction service data processing unit 2 includes a transmission direction number communication.
  • the service data processing module 21 and the transmission direction link dividing module 22, the control unit 1 includes a controller 11.
  • the controller 11 shown in Fig. 9a or Fig. 9b is similar to the controller 11 shown in Fig. 8a (or Fig. 8b) except for the following points:
  • the output port of the transmission direction data service data processing module 21 and the output port of the transmission direction link division module 22 are configured (the first configuration information is sent to the two modules).
  • the transmit direction link partitioning module 22 is coupled to the transport network channel setup and signal encapsulation module 32.
  • the bandwidth of the transmission direction link managed by the transmission direction link division module 22 matches the bandwidth of the transport network channel and the transport network channel managed by the signal encapsulation module 32, that is, the transmission direction link division module 22 manages
  • the bandwidth of the transmit direction link is within the range of the input signal bandwidth required by the transmit network channel settings and the signal encapsulation module to perform signal encapsulation.
  • the transmission direction link division module 22 is further connected to the transmission direction number communication service data processing module 21.
  • the transmission direction link division module 22 receives the data communication data sent by the transmission direction number service data processing module 21 according to the bandwidth information in the port configuration information sent by the controller 11, and if the transmission direction number communication service data processing module 21 sends If the incoming data service traffic is too large (for example, greater than the threshold set by the transmission defense link division module 22 according to the port configuration information), the back pressure information is used to notify the transmission direction data service data processing module to reduce the transmitted data communication service data. Traffic.
  • the transmission direction service data processing module 21 needs to add an output port, and the transmission direction link division module 22 needs to add a new transmission direction link, and the transmission direction number communication service data processing module 21 new.
  • the increased output port is mapped to the transmission direction link added by the transmission direction link division module 22 (by configuring the output port of the transmission direction data service data processing module 21 and the link of the transmission direction link division module 22);
  • the above traffic information (cache status) is sent by the transmission direction data service data processing module 21 and/or the controller of the slave device (periodic or aperiodic).
  • the transmission direction data communication service data processing module 21 shown in FIG. 9a or FIG. 9b functions similarly to the transmission direction data communication service data processing module 21 shown in FIG. 8a (or FIG. 8b), and the difference is:
  • the input service data is processed and distributed to the corresponding output port; the service data that cannot be temporarily sent is cached locally. Corresponding in the queue.
  • the so-called back pressure information is information used to indicate reverse suppression, and its transmission direction is opposite to the data transmission direction.
  • the transmission direction link division module 22 sets a buffer for each transmission direction link. If the bandwidth of the transmission direction link matches the bandwidth of the transmission network channel, if the transmission direction number communication service data processing module 21 divides the link to the transmission direction The service data flow output by the module 22 (for a certain transmission network channel) is too large, and the transmission direction link division module 22 sends a back pressure information to the transmission direction data service data processing module 21 to notify the transmission direction number service data processing module. 21 The bandwidth of its output port should not exceed the corresponding bandwidth required by the transport network channel.
  • the transmission direction data service data processing module 21 controls the bandwidth of the corresponding output port to not exceed the range required by the transmission network channel setting and signal encapsulation module 32 for signal encapsulation.
  • the sending direction data service data processing module 21 internally (locally) sets a queue for each output port (or may be called a transport network channel) to buffer the service data outputted through the output port, and the service data that cannot be temporarily sent can be cached in the sending direction.
  • the number-of-service data processing module 21 is locally in the corresponding queue.
  • the transmission direction link division module 22 is a new module, which can be used to:
  • each link is bound to a number of blocks of bits.
  • the service data sent by the transmission direction number service data processing module 21 is encapsulated according to the number of links in the transmission direction and the bandwidth configuration, and output to the transmission network channel setting and signal encapsulation module 32.
  • FIG. 9a or 9b directly borrows the buffer in the transmission direction data communication service data processing module 21 and the transmission direction link division module 22, and does not need to separately set the cache module as shown in FIG. 8a (or FIG. 8b). 31.
  • the transport network channel setting and signal encapsulating module 32 shown in FIG. 9a or 9b functions similarly to the transport network channel setting and signal encapsulating module 32 shown in FIG. 8a (or FIG. 8b), except that:
  • Scenario 2 Metropolitan Area Network (single-homed).
  • FIG. 10 is a schematic diagram of a network architecture of scenario 2 of a network control method to which the present application is applied.
  • the networking mode is that the services of the user equipment need to be processed centrally through a centralized service processing device.
  • the services of the base station in the data communication network
  • the service processing device SGW Server Gateway
  • MME Mobility Management Entity
  • the service of the OLT Optical Line Terminal
  • BRAS Broadband Remote Access Server
  • the transport network there is a centralized transport network device connected to the centralized service processing device (see edOTN A of Fig. 10), and the service data of all data communication networks passes through the centralized transport network device.
  • the execution body of the foregoing steps S1-S3 is a centralized transport network device, and the centralized transport network device may also be referred to as a master device.
  • FIG. 11 is a flow chart of an embodiment of a network control method of the present application in scenario 2.
  • the master device establishes a transport network channel according to the information independently obtained by the transport network, to trigger the redistribution of service data traffic in the data communication network.
  • the established transport network channel has an initial bandwidth. And the established transport network channel It can be unidirectional or bidirectional.
  • the master device can list the routers/switch pairs that are not directly connected in the data communication network, and select them in a certain order or a certain policy (for example, the transport network channel that has just been closed needs to be paused for a period of time before attempting, etc.), and periodically select no direct connection.
  • a transport network channel is established between the router/switch pair.
  • the transport network channel can be triggered by the edge device of the transport network channel to be established.
  • the edge devices of each transport network channel are edOTN A (that is, the master device), so the transport network channel can be directly triggered by the master device.
  • edOTN A that is, the master device
  • the transport network channel can be directly triggered by the master device.
  • the triggering mode refer to the related description in the embodiment of FIG. 6, which is not described herein.
  • the master device determines, by using configuration information of the foregoing transport network, a bandwidth constraint relationship associated with each transport network channel (which may be represented as an i-th transport network channel);
  • the master device detects the service data traffic at the entrance of the i-th transport network channel, and obtains traffic information of the service data in the i-th transport network channel (corresponding to the foregoing step S2).
  • the above flow information includes the input flow rate and the change in the flow difference between the input flow and the output flow.
  • step S1104 The master device determines whether the input traffic size at the entrance of the i-th transport network channel is not greater than a preset threshold, and if yes, proceeds to step S1105, otherwise proceeds to step S1106.
  • Steps S1104 to S1106 correspond to the aforementioned step S3. It should be noted that, although the steps S1102-S1106 are for the i-th transport network channel, since i can take any value (i is not less than 1, not more than N, N is the total number of transport network channels), step S602 to S606 is actually the action taken on each transport network channel.
  • S1106 Calculate the bandwidth value required by the foregoing transport network channel based on the bandwidth constraint relationship and the traffic information of the i-th transport network channel, and adjust the bandwidth of the transport network channel. In the above-mentioned required bandwidth value, the process returns to step S1101 (waiting for the next cycle to execute step S1101).
  • the edge devices of each transport network channel are edOTN A (that is, the master device), so the master device can trigger to close the transport network channel or adjust the bandwidth of the transport network channel.
  • edge device master device
  • Figures 7-9b The basic structure of the edge device (master device) can be seen in Figures 7-9b.
  • FIG. 12 is a schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • FIG. 12b is another schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • the channel encapsulating unit 3 in the above-mentioned master device includes a cache module 31 and a transport network channel setting and signal encapsulating module 32.
  • the sending direction service data processing unit 2 includes a sending direction data communication unit.
  • the business data processing module 21, the control unit 1 includes a controller 11.
  • controller 11 can be used to:
  • the transport network channel setting and signal encapsulation module 32 establishes a transport network channel to trigger the redistribution of traffic data traffic in the data communication network.
  • the output port of the transmission direction data service data processing module 21 is configured according to the established transport network channel (the first configuration information is sent to the transmission direction data service data processing module 21).
  • transport network configuration information such as network topology, channel configuration, etc.
  • Trigger and control the transport network channel settings and signal encapsulation module 32 adjusts the bandwidth of the transport network channel to the desired bandwidth value.
  • FIG. 13a is another schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • FIG. 13b is another schematic structural diagram of a master device (or an edge device) in scenario 2 of the present application.
  • Fig. 13a or Fig. 13b shows another specific structure of the above-described master device.
  • the channel encapsulating unit 3 in the above-mentioned master device includes a transport network channel setting and signal encapsulating module 32
  • the transmitting direction service data processing unit 2 includes a transmitting direction data communication service data processing module 21 and transmitting
  • the direction link dividing module 22 the control unit 1 includes a controller 11.
  • the controller 11 shown in Fig. 13a or Fig. 13b is similar to the controller 11 of the main device of Fig. 9a (or Fig. 9b), and will not be described herein.
  • the traffic sizes in different directions are inconsistent, and the traffic in the downlink direction (from the centralized service processing device to the user equipment) is much larger than that in the uplink direction (from user equipment to centralized).
  • the direction of the service processing device), and the transmission network channel is generally configured in two directions, that is, the bandwidth of the transmission network channel configured in two directions is generally the same, so that in the metro network, only the downlink transmission network needs to be calculated.
  • the channel bandwidth, the uplink transport network channel bandwidth and the downlink are consistent.
  • FIG. 14 is a schematic diagram of a network architecture of scenario 3 in which the network control method of the present application is applied.
  • Equipment edOTN A1 and edOTN A2
  • the transport network channel in the transport network uses edOTN A1 or edOTN A2 as edge devices, and other transport network devices are intermediate devices.
  • the device in the data communication network performs traffic balancing on the two links that are dual-homed according to the bandwidth ratio. Therefore, the cache filling status corresponding to the two links of the dual-homing is substantially the same, and one of the two links can be used for bandwidth adjustment. Calculation.
  • a centralized transport network device can be set as the master device (for example, edOTN A1 in the above figure), and the master device can calculate the transport network channel bandwidth based only on the traffic condition of the service data in the monitored data communication network.
  • FIG. 15 is a flowchart of an embodiment of a network control method of the present application in scenario 3.
  • S1501 Set the bandwidth ratio between the transport network channels corresponding to the dual-homing service, set one centralized device as the primary device, and the other centralized device as the secondary device.
  • edOTN A1 can be set as the master device and edOTN A2 as the slave device.
  • the master device establishes a transport network channel according to the information independently obtained by the transport network, to trigger the redistribution of service data traffic in the data communication network.
  • the established transport network channel has an initial bandwidth.
  • the master device can list the router/switch pairs that are not directly connected in the data communication network, and periodically establish a transport network channel between the router/switch pairs without direct connection in a certain order.
  • the primary device is not the edge device of all transport network channels. Therefore, establishing a transport network channel involves two situations:
  • the master device can trigger the control establishment.
  • the master device notifies the slave device to trigger control establishment.
  • the specific establishment method can refer to the existing establishment manner, and will not be described herein.
  • the master device uses the configuration information of the foregoing transport network and the bandwidth ratio to determine and each A bandwidth constraint associated with a transport network channel (which can be represented as the i-th transport network channel).
  • the above configuration information may include a transport network topology, a channel configuration, and a bandwidth ratio.
  • the master device obtains traffic information of the service data in the transport network channel.
  • the master device detects the traffic data traffic at the entrance of the transport network channel that is itself an edge device for the transport network channel that is the edge device itself, and obtains the traffic information of the service data in the transport network channel.
  • the slave device can detect the traffic data traffic at the entrance of the transport network channel, obtain the traffic information of the service data in the transport network channel, and submit the traffic information to the master device.
  • the above flow information includes the input flow rate and the change in the flow difference between the input flow and the output flow.
  • step S1505 The master device determines whether the input traffic size at the entrance of the i-th transport network channel is not greater than a preset threshold, and if yes, proceeds to step S1506, otherwise proceeds to step S1507.
  • steps S1502-S1507 are for the i-th transport network channel, since i can take any value (i is not less than 1, not more than N, N is the total number of transport network channels), step S1502 to S1507 is actually the action taken on each transport network channel.
  • step S1507 Calculate the bandwidth value required by the transport network channel based on the bandwidth constraint relationship and the traffic information of the i-th transport network channel, and adjust the bandwidth of the transport network channel to the required bandwidth value, and return to step S1502 ( Waiting for the next cycle to execute step S1502).
  • FIG. 7 - FIG. 9b the structure and function of the master device or the slave device are shown in FIG. 7 - FIG. 9b, or FIG. 12a - FIG. 13b and related descriptions, and details are not described herein.
  • the steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented directly in hardware, a software module executed by a processor, or a combination of both.
  • the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本申请实施例公开了网络控制方法及相关装置。所述方法包括：获取数据通信网的设备分布信息和传送网的网络拓扑信息；根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；检测所述传送网通道中来自数据通信网的业务数据的流量信息；根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道。采用本发明的方法或装置，可以简化网络控制的复杂度。

Description

网络控制方法及相关装置 技术领域
本申请涉及通信技术领域，更具体地说，涉及网络控制方法及相关装置。
背景技术
通信承载网主要由数据通信网和传送网两层网络混合组网而成。目前最普遍的应用是：数据通信网由路由器或交换机组成，传送网由波分复用(Wavelength Division Multiplexing，WDM)网络设备和/或光传送网络(Optical Transport Network，OTN)设备组成(请参见图1)。
数据通信网的业务数据会封装到传送网的通道中，在传送网中传输，将要到达数据通信网的目的地时再解封装恢复出业务数据送到数据通信网的目的地。
数据通信网和传送网混合组网时的联合控制很重要，只有两层网络进行联合控制才能实现整个通信承载网的优化配置，降低整网成本。
数据通信网和传送网混合组网时的联合控制的常用场景为光层旁路(Optical Bypass，也有称为IP Offloading)。如上图1所示，初始时，“路由器/交换机a”和“路由器/交换机c”有直接连接，“路由器/交换机c”和“路由器/交换机x”有直接连接，而“路由器/交换机a”和“路由器/交换机x”之间没有直接连接。也即，路由器/交换机a到“路由器/交换机c”只有一跳，“路由器/交换机a”到“路由器/交换机x”有两跳。则“路由器/交换机a”到“路由器/交换机x”的业务数据传送途径为：路由器/交换机a->WDM/OTN设 备1->WDM/OTN设备3->WDM/OTN设备4->路由器/交换机c->WDM/OTN设备4->WDM/OTN设备5->WDM/OTN设备6->路由器/交换机x。
若“路由器/交换机a”到“路由器/交换机x”和一条传送网通道对应的带宽相当，就可以在传送网中给“路由器/交换机a”到“路由器/交换机x”建立一条传送网通道。这样，“路由器/交换机a”到“路由器/交换机x”的业务数据传送途径可改为：路由器/交换机a->WDM/OTN设备1->WDM/OTN设备3->WDM/OTN设备5->WDM/OTN设备6->路由器/交换机x。
可见，“路由器/交换机a”到“路由器/交换机x”的业务数据就不需要再经过中间的“路由器/交换机c”，直接在光层(传送网)进行了旁路，这称为光层旁路。其好处是不需要中间路由器/交换机进行转发，节省了(中间)路由器/交换机的端口，降低了整网成本。
现有光层旁路具有设计复杂的问题，主要表现在：
一、要求数据通信网络和传送网都支持同一种控制平面技术。例如，通用多协议标签交换(Generalized Multi-Protocol Label Switching
，GMPLS)技术或自动交换光网络(Automatically Switched Optical Network，ASON)技术。而实际应用中，这两层网络不能全部支持同一种控制平面技术，也就无法实现跨层的控制和优化。
二、一般由数据通信网发起新的请求。比如，由数据通信网发起建立新传送网通道的连接请求，这需要事先监控到有建立新的连接的必要，而这种监控一般要查看数据通信网的业务数据单元的头部信息，按照头部信息的不同进行流分类和按照流进行统计。
发明内容
有鉴于此，本申请的目的在于提供网络控制方法及装置，以简化网络控制的复杂度。
本申请实施例提供如下技术方案：
根据本申请实施例的第一方面，提供一种网络控制方法，该方法包括：
获取数据通信网的设备分布信息和传送网的网络拓扑信息；
根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
检测所述传送网通道中来自数据通信网的业务数据的流量信息；
根据所述流量信息，调整所述传送网通道的带宽；
或者，根据所述流量信息，关闭所述传送网通道。
结合第一方面的第一种可能的实现方式，所述检测所述传送网通道中来自数据通信网的业务数据的流量信息，具体包括：
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度；
所述根据所述流量信息，调整所述传送网通道的带宽，具体包括：
确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；
增加所述传送网通道的带宽；
或者，所述根据所述流量信息，调整所述传送网通道的带宽，具体包括：
确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；
减小所述传送网通道的带宽。
结合第一方面的第二种可能的实现方式，所述检测所述传送网通道中来自数据通信网的业务数据的流量信息，具体包括：
检测所述传送网通道中来自数据通信网的业务数据的单位时间 内的输入流量；
所述根据所述流量信息，关闭所述传送网通道，具体包括：
确定所述输入流量在预设时间内持续小于第四预设阈值；
关闭所述传送网通道。
结合第一方面第一种或第二种可能的实现方式，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量，具体包括：
获取缓存中填充的数据量；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储；
根据传送网通道的输出流量以及所述缓存中填充的数据量，确定所述输入流量。
结合第一方面第一种可能的实现方式，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度，具体包括：
获取缓存中填充的数据量的变化速度；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储。
结合第一方面的第三种可能的实现方式，所述关闭所述传送网通道之后，还包括：
按照预设时间顺序，再次建立所述传送网通道；
检测所述传送网通道中来自数据通信网的业务数据的流量信息；
根据所述流量信息，调整所述传送网通道的带宽；
或者，根据所述流量信息，关闭所述传送网通道。
根据本申请实施例的第二方面，提供一种网络控制装置，包括：
信息获取单元，用于获取数据通信网的设备分布信息和传送网的网络拓扑信息；
传送网通道建立单元，用于根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
流量信息检测单元，用于检测所述传送网通道中来自数据通信网的业务数据的流量信息；
带宽调整单元，用于根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道。
结合第二方面，在第一种可能的实现方式中，所述流量信息检测单元，具体用于：
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度；
所述带宽调整单元，具体用于：
确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；
增加所述传送网通道的带宽；
或者，所述带宽调整单元，具体用于：
确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；
减小所述传送网通道的带宽。
结合第二方面的第二种可能的实现方式，所述流量信息检测单元，具体用于：
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
所述带宽调整单元，具体用于：
确定所述输入流量在预设时间内持续小于第四预设阈值；
关闭所述传送网通道。
结合第二方面的第一种或第二种可能的实现方式，所述流量信息检测单元，具体用于：
获取缓存中填充的数据量；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储；
根据传送网通道的输出流量以及所述缓存中填充的数据量，确定所述输入流量。
结合第二方面的第一种可能的实现方式，所述流量信息检测单元，具体用于：
获取缓存中填充的数据量的变化速度；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储。
结合第二方面的第三种可能的实现方式，所述传送网通道建立单元，还用于：
关闭所述传送网通道之后，按照预设时间顺序，再次建立所述传送网通道。
可见，在本申请中，建立传送网通道根据的是传送网独立获得的信息(数据通信网的设备分布信息、传送网的网络拓扑、传送网设备相互的连接的物理带宽)，上述信息的获得无需对数据通信网的业务数据进行处理即可获得，也不需要传送网中的设备与数据通信网络中的设备进行交互。而现有方式中，建立传送网通道要求数据通信网络和传送网都支持同一种控制平面技术(例如，GMPLS/ASON)，或者说需要两层网络交互的信息较多，并且需要由数据通信网发起请求，并需要事先监控到有建立新的连接的必要。二者相比，本申请所提供的方案不要求数据通信网络和传送网都支持同一种控制平面技术，也不需要由数据通信网发起新的请求，从而简化了网络控制的复杂度。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例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申请的一些实施例，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为现有技术中的通信承载网的网络架构示意图；
图2a为传送网的一种结构示意图；
图2b为本申请的网络控制方法实施例的流程图；
图3为流量信息与传送网通道的一种示意图；
图4为本申请中的网络控制装置的一种结构示意图；
图5为应用本申请的网络控制方法的场景一的网络架构示意图；
图6为场景一中本申请的网络控制方法的一种实施方式的流程图；
图7为本申请中场景一中的主设备(或边缘设备)的一种结构示意图；
图8a为本申请场景一中的主设备(或边缘设备)的一种硬件结构示意图；
图8b为本申请场景一中的主设备(或边缘设备)的另一种硬件结构示意图；
图9a为本申请的主设备(或边缘设备)的另一种硬件结构示意图；
图9b为本申请的主设备(或边缘设备)的另一种硬件结构示意图；
图10为应用本申请的网络控制方法的场景二的网络架构示意图；
图11为场景二中本申请的网络控制方法的一种实施方式的流程图；
图12a为本申请场景二中的主设备(或边缘设备)的一种结构示意图；
图12b为本申请场景二中的主设备(或边缘设备)的另一种结构 示意图；
图13a为本申请场景二中的主设备(或边缘设备)的另一种结构示意图；
图13b为本申请场景二中的主设备(或边缘设备)的另一种结构示意图；
图14为应用本申请的网络控制方法的场景三的网络架构示意图；
图15为场景三中本申请的网络控制方法的一种实施方式的流程图；
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
为了方便理解本申请实施例，首先在此介绍本申请实施例描述中会引入的几个术语：
线路侧接口：传送网设备之间的接口为线路侧接口；
客户侧接口：传送网设备与数据通信网中路由器/交换机连接的接口为客户侧接口；
边缘设备：传送网中连接数据通信网中路由器/交换机的设备称为边缘设备；
中间设备：传送网中没有连接数据通信网中路由器/交换机的设备称为中间设备。
需要注意的是，边缘设备或者中间设备是相对业务数据传送途径(也即传送网通道)而言的。请参见图2a，同一个传送网设备c相对于传送网通道1而言是中间设备，而相对于传送网通 道2而言是边缘设备。需要说明的是，图2a中，传送网通道1是指沿设备A、设备B、设备C到设备D的通道；传送网通道2是指沿设备A、设备B、设备C的通道。
本申请实施例提供网络控制方法可用于数据通信网和传送网之间的联合控制。
数据通信网可以包括以太网、MPLS(Multi-Protocol Label Switching，多协议标签交换)网、IP(Internet Protocol，互联网协议)网、SAN(Storage Area Network，存储区域网络)以及ATM(Asynchronous Transfer Mode，异步传输模式)网络中的一种或多种(多种意即不同技术的混合组网)；
而传送网可以包括WDM(Wavelength Division Multiplexing，波分复用)网络、OTN(Optical Transport Network，光传送网，参见标准ITU-T G.709)、SDH(Synchronous Digital Hierarchy，同步数字体系，参见标准ITU-T G.707)传送网、SONET(Synchronous Optical Network，同步光纤网，参见标准ANSI T1.105)以及基于PSCL(Physical Coding Sublayer Lane，物理编码子层通道)的传送网络中的一种或多种(多种意即采用不同技术的混合组网)。
请参见图2b，上述网络控制方法可包括如下步骤：
S1：获取数据通信网的设备分布信息和传送网的网络拓扑信息；
所述数据通信网的设备分布信息可以表示所述数据通信网的设备数量，并且还可以表示数据通信网的设备与传送网设备之间的连接关系，所述传送网的网络拓扑信息可以表示所述传送网的设备之间的连接关系。
S2：根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
根据所述数据通信网的设备分布信息，可以获知所述数据通信网中的设备之间可能需要的传送网通道。可以在没有建立传送网通道的数据通信网设备之间建立传送网通道。本实施例中，可以按照预设顺 序，依次在没有建立传送网通道的设备之间建立传送网通道。
根据所述传送网的网络拓扑信息，可以确定如何建立所述传送网通道。例如，当需要在数据通信网的设备A与设备B之间建立传送网通道时，根据传送网的网络拓扑，可以确定通过哪些传送网设备建立的传送网通道是设备A与设备B之间最短的传送网通道。
建立传送网通道，可以触发数据通信网中的业务数据流量进行重新分配。
上述数据通信网中的业务数据可以包括以太网中的以太网包(Ethernet Packet)、MPLS网络中的包、IP网中的IP包(IP Packet)、SAN中的数据帧(Data Frame)以及ATM网络中的ATM信元(Cell)中的一种或多种。
上述传送网通道(Path)是一种传送实体，指传送网通道层的路径(路径和通道层的含义可以参考ITU-T G.805和G.806)，其可以包括WDM网络中的波长(Wavelength)、OTN网络中ODU(Optical channel Data Unit)通道或光通道(Optical Channel，参见ITU-T G.709)、SDH网络中的VC(Virtual Container)通道、SONET网络中的VT(Virtual Tributary)通道以及基于PCSL的传送网中的PCSL中的一种或多种。
建立的传送网通道具有初始带宽。
上述数据通信网的设备分布信息和所述传送网的网络拓扑信息，是传送网设备可以独立获得的信息。也就是说，传送网设备不必对数据通信网的业务数据进行处理(例如按照头部信息的不同进行流分类和按照流进行统计)，即能获得的信息。
之所以要获取数据通信网的设备分布信息，是因为建立传送网通道的目的是为了令数据通信网中原本无直接连接的路由器/交换机之间直接连接，所以需要通过数据通信网的设备分布信息确定哪两个路由器/交换机之间可以通过传送网通道直接连接。
由于数据通信网中原本无直接连接的路由器/交换机可能有很多对，所以传送网通道的建立并不会一蹴而就。可隔一段时间建立一个 或多个传送网通道，例如周期性得建立传送网通道。
需要说明的是，由于在传送网新建了传送网通道，按照现有的数据通信网络的设计，传送网通道的变化会导致数据通信网络中的流量自动重新分配，例如在IP网络中会引起路由更新从而导致流量重新分配。
后面的步骤是在数据通信网中的业务数据流量进行重新分配后执行的。
S3：检测所述传送网通道中来自数据通信网的业务数据的流量信息；
检测的可以是传送网通道入口处的数据通信网的业务数据的流量信息信息。而传送网通道入口处的数据通信网的业务数据的流量信息具体是由该传送网通道的边缘设备检测业务数据的流量，并对流量进行统计分析得到的。
所述检测所述传送网通道中来自数据通信网的业务数据的流量信息，具体可以包括：检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量、检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度中一种或多种。
S4：根据所述流量信息，调整所述传送网通道的带宽；
或者，根据所述流量信息，关闭所述传送网通道。
当通过所述流量信息可以确定所述传送网通道中的数据流量较大或者数据流量的增速较快时，表示所述传送网通道必须的，起到了比较大的传输作用。此时可以保留所述传送网通道，并且可以根据所述流量信息，逐渐调整所述传送网通道的带宽。
当通过所述流量信息可以确定所述传送网通道中的数据流量较小甚至没有数据流量时，表示所述传送网通道是不必建立的，起到的传输作用很小。此时可以关闭所述传送网通道。
在本申请其他实施例中，在关闭传送网通道预设时长后(可将被关闭的传送网通道标为未建立)，可重新建立该传送网通道。例如，关闭某传送网通道的时间为12：00，7个小时后，可重新建立该传送 网通道。
可见，在本实施例中，建立传送网通道根据的是传送网独立获得的信息(数据通信网的设备分布信息、传送网的网络拓扑信息)，上述信息的获得无需对数据通信网的业务数据进行处理即可获得，也不需要传送网中的设备与数据通信网络中的设备进行交互。
而现有方式中，建立传送网通道要求数据通信网络和传送网都支持同一种控制平面技术(例如，GMPLS/ASON)，或者说需要两层网络交互的信息较多，并且需要由数据通信网发起请求，并需要事先监控到有建立新的连接的必要。
二者相比，本申请所提供的方案不要求数据通信网络和传送网都支持同一种控制平面技术，也就是说采用本申请技术方案的传送网能够和采用不同的控制平面技术的数据通信网混合组网以实现跨层控制和优化，设计简单。
同时，也不需要由数据通信网发起新的请求，从而简化了网络控制的复杂度。
并且现有方式中，是在监控到有建立新连接必要时，才由数据通信网发起的连接请求，然后在传送网中尝试建立连接。并且，连接请求中包含了所期望的传送网通道带宽信息，因此，如建立成功，则所建立的通道的带宽即为所期望的带宽。这样，从监控到有必要，到使用建立的传送网通道传输业务数据会占用较长的时间，速度较慢。
而在本实施例中，并非有建立新连接必要时才建立，在某种程度上相当于提前建立了传送网通道，建立传送网通道后，只需要检测传送网通道中的业务数据的流量信息即可触发带宽调整或者关闭传送网通道，实现也很简单。这样当需要在两个路由器/交换机之间直接传输业务数据时，可直接使用已建立的传送网通道，并可快速调整传送网通道带宽，其占用时间较短，速度相对较快。
上述步骤依场景不同，可由同一传送网设备完成，或者由传送网设备之间进行通信而完成，本文后续将分场景进行详细介绍。
在本申请其他实施例中，上述步骤获取所述传送网通道中来自数 据通信网的业务数据的流量信息，可具体包括：周期性获取上述传送网通道中业务数据的流量信息。获取的可以是所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量，和/或单位时间内的输入流量变化速度。而步骤根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道中，可相应包括：
基于上述传送网通道最近一个所述周期对应的流量信息，对上述传送网通道进行控制。
实际应用中，所述根据所述流量信息，调整所述传送网通道的带宽，具体可以包括：
确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；增加所述传送网通道的带宽。
或者，所述根据所述流量信息，调整所述传送网通道的带宽，具体可以包括：
确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；减小所述传送网通道的带宽。
其中，大于所述第一预设阈值表明所述传送网通道的建立是有必要的。
当所述输入流量在预设时间内持续小于第四预设阈值；可以关闭所述传送网通道。
其中，小于所述第四预设阈值表明所述传送网通道的建立是没有必要的。
实际应用中，所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前可以采用缓存进行存储。
此时，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量，具体可以包括：
获取所述缓存中填充的数据量；根据传送网通道的带宽以及所述缓存中填充的数据量，确定所述输入流量。
不考虑其他因素的情况下，所述缓存中填充的数据量正比于输入 流量与输出流量的差值。所以根据所述缓存中填充的数据量和所述输出流量可以得到所述输入流量。
同理，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度，具体可以包括：
获取所述缓存中填充的数据量的变化速度。
因为，所述缓存中填充的数据量正比于输入流量与输出流量的差值，在所述输出流量不变的情况下，所述输入流量变化速度就正比于所述缓存中填充的数据量的变化速度。
通过上述方式，可以根据缓存中填充的数据量的信息，确定输入流量的信息，简化对于输入流量的统计分析过程。
此外，以调整传送网通道的带宽为例，在本实施例中，传送网通道的带宽调整可以是持续循环进行的，这样能够使传送网通道的带宽设置实时适配数据通信网的需求，达到更好的联合控制和跨层优化的效果。
具体的，所述关闭所述传送网通道之后，还可以包括以下步骤：
按照预设时间顺序，再次建立所述传送网通道；获取所述传送网通道中来自数据通信网的业务数据的流量信息；根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道。
现参照图3简单介绍流量信息与传送网通道之间的关系：
可简单认为，数据通信网的业务数据从边缘设备的客户侧接口进入，从边缘设备的线路侧接口输出至传送网通道。当然，在输出业务数据之前，边缘设备会缓存业务数据，并对其进行相应的处理(例如分发、封装等)。
如将边缘设备看作一个水桶，则客户侧接口相当于进水口，线路侧接口相当于出水口，传送网通道相当于管道，传送网通道的带宽相当于管道的尺寸，该尺寸与出水口的尺寸是一致的。
在未关闭传送网通道或未调整传送网通道之前，传送网通道的带宽是固定的，则出水口(线路侧接口)的流量也是固定的。则入水口 (线路侧接口)的输入流量越大，水桶(边缘设备)中滞留的水(业务数据)也越多，这样，对水桶(边缘设备)的压力也越大，这就需要调大传送网通道的带宽。反之，则需要调小传送网通道的带宽。而当输入流量小到一定程度，可考虑关闭传送网通道。
另外，输入流量与输出流量之间的流量差相当于水桶(边缘设备)中的水位线变化。如水位线一直上升，说明水桶(边缘设备)中滞留的水(业务数据)也越多，这就需要调大传送网通道的带宽；反之，则需要调小传送网通道的带宽。
在本申请其他实施例中，上述对上述传送网通道进行控制可包括：
步骤A：判断上述输入流量大小是否大于预设的阈值；
步骤B：基于上述输入流量大小不大于预设的阈值的判断结果，关闭上述传送网通道；
现有方式中，除非发生异常才关闭传送网通道，因此，在传送网通道无异常时，即便数据通信网中的业务数据的输入流量已很少，该传送网通道仍会一直占用着带宽，这不利于网络优化。
本实施例则在输入流量大小不大于预设的阈值时，关闭传送网通道可以释放带宽，这样可利于更高效得利用带宽资源。需要说明的是，当关闭所述传送网通道后，可以将所述业务数据的未传输完毕的部分合并至另外的传送网通道进行传输。
步骤C：基于上述输入流量大小大于预设的阈值的判断结果，调整上述传送网通道的带宽。
调整传送网通道的带宽主要有两种方式：一是调整级联或虚级联的通道的数量，例如X virtually concatenated ODUks(ODUK-Xv)、VC-n-Xv X Virtually concatenated VC-ns(VC-n-Xv)等虚级联的通道中的数量，调整的方式是用链路容量调整方案(Link Capacity Adjustment Scheme，LCAS)；二是直接调整通道的带宽，例如调整ODUflex的带宽，采用的方法是ODUflex的无损调整(Hitless Adjustment of ODUflex，HAO)。
与之相对应，本申请实施例还要求保护网络控制装置。该装置可 以是边缘设备，本申请实施例中也将该装置称为主设备。
图4为本申请中的网络控制装置的一种结构示意图。所述网络控制装置可以是传送网设备。如图4所示，该装置可以包括：
信息获取单元401，用于获取数据通信网的设备分布信息和传送网的网络拓扑信息；
传送网通道建立单元402，用于根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
流量信息检测单元403，用于检测所述传送网通道中来自数据通信网的业务数据的流量信息；
带宽调整单元404，用于根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道。
本申请的网络控制装置，由于建立传送网通道根据的是传送网独立获得的信息(数据通信网的设备分布信息、传送网的网络拓扑、传送网设备相互的连接的物理带宽)，所以上述信息的获得无需对数据通信网的业务数据进行处理即可获得，也不需要传送网中的设备与数据通信网络中的设备进行交互。而现有方式中，建立传送网通道要求数据通信网络和传送网都支持同一种控制平面技术(例如，GMPLS/ASON)，或者说需要两层网络交互的信息较多，并且需要由数据通信网发起请求，并需要事先监控到有建立新的连接的必要。二者相比，本申请所提供的方案不要求数据通信网络和传送网都支持同一种控制平面技术，也不需要由数据通信网发起新的请求，从而简化了网络控制的复杂度。
实际应用中，所述流量信息检测单元403，具体用于：
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度；
所述带宽调整单元404，具体用于：
确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；
增加所述传送网通道的带宽；
或者，所述带宽调整单元404，具体用于：
确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；
减小所述传送网通道的带宽。
实际应用中，所述流量信息检测单元403，具体用于：
检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
所述带宽调整单元404，具体用于：
确定所述输入流量在预设时间内持续小于第四预设阈值；
关闭所述传送网通道。
实际应用中，所述流量信息检测单元403，具体用于：
获取缓存中填充的数据量；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储；
根据传送网通道的输出流量以及所述缓存中填充的数据量，确定所述输入流量。
实际应用中，所述流量信息检测单元403，具体用于：
获取缓存中填充的数据量的变化速度；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储。
实际应用中，所述传送网通道建立单元402，还用于：
关闭所述传送网通道之后，按照预设时间顺序，再次建立所述传送网通道。
下面，将分场景详细介绍本申请所提供的技术方案。
场景一：数据通信网和传送网任意组网。
在本场景下，请参见图5。
图5为应用本申请的网络控制方法的场景一的网络架构示意图。如图5所示，数据通信网以IP网为例(即数据通信网主要由路由器组成)，传送网以OTN为例(即传送网主要由OTN设备组成)，但显然地，本申请实施例一所采用的方法和装置同样适用于采用前述的其他技术的数据通信网和传送网混合组网的情形。
图6为场景一中本申请的网络控制方法的一种实施方式的流程图。
在本场景中，在一个周期内，请参见图6，所执行的步骤如下：
S601：确定传送网设备中的其中一个为主设备，其他为从设备。
可确定任意一个传送网设备为主设备。当然，为了方便通信，可选择位于传送网拓扑中心的传送网设备为主设备。
S602：根据传送网独立获得的信息建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配。
所建立的传送网通道具有初始带宽。并且，所建立的传送网通道可以是单向的，也可以是双向的。
主设备可将数据通信网中无直接连接的路由器/交换机对列出来，按一定顺序周期性得在无直接连接的路由器/交换机对之间建立传送网通道。
实际中，可由欲建立的传送网通道的边缘设备触发建立该传送网通道。
触发方式至少有两种：一种是作为主设备的边缘设备可向欲建立的传送网通道涉及的其他传送网设备发送控制通讯信息，以通知各传送网设备建立传送网通道。
另一种是，由传送网通道的源头的设备开始启动相关协议，触发与欲建立的传送网通道中的设备的握手，欲建立的传送网通道中的各个设备之间依次握手，最终建立起传送网通道。具体的建立方式可参考现有的建立方式，在此不作赘述。
在场景一中，主设备并非是所有传送网通道的边缘设备。因此， 建立传送网通道包括两种情况：
一种情况：对于以主设备为边缘设备的待建立传送网通道，可由主设备触发控制建立。
另一种情况：对于以从设备为边缘设备的待建立传送网通道，主设备通知从设备触发控制建立。
S603：主设备使用传送网的配置信息确定与每一传送网通道(可表示为第i个传送网通道)相关的带宽约束关系。
上述配置信息可包括传送网网络拓扑、通道配置。所述通道配置具体可以包括通道带宽，通道的连接关系等等。
与某传送网通道相关可包括“与该传送网通道直接相关”和“与该传送网通道间接相关”。带宽约束关系可以等式或不等式的方式体现。
例如，传送网通道x1的带宽表示为WPx1(W表示带宽，P表示通道)，WPx1至WPxk封装在一个大的传送网通道中，该大的传送网通道的带宽最大为mGbps，则WPx1+WPx2+…+WPxk≤mGbps。
此外，WPx1、WPy2，…，WPyk之间可能还需要满足如下不等式：
WPx1+WPy2+…+WPyk≤nGbps。
则“WPx1+WPx2+…+WPxk≤mGbps”与“WPx1+WPy2+…+WPyk≤nGbps”体现的是“与WPx1直接相关”。
再例如，WPx1满足不等式“WPx1+WPx2+…+WPxk≤mGbps”，而不等式中的“WPx2”需满足“WPx2+WPy2+…+WPyk》NGbps”。WPx2的取值是会影响到WPx1的取值的。则“WPx2+WPy2+…+WPyk》NGbps”体现的是“与WPx1间接相关”。
S604：主设备获取第i个传送网通道中业务数据的流量信息(与前述步骤S2对应)。
此时分两种情况：
一种情况：第i个传送网通道以主设备为边缘设备。则可由主设 备检测第i个传送网通道入口处的业务数据流量，得到第i个传送网通道中业务数据的流量信息。
另一种情况：第i个传送网通道以从设备为边缘设备。则可由从设备检测第i个传送网通道入口处的业务数据流量，得到第i个传送网通道中业务数据的流量信息，并将流量信息提交至主设备。
前已述及，上述流量信息包括输入流量大小，以及，输入流量与输出流量之间的流量差变化。
S605：主设备判断第i个传送网通道入口处的输入流量大小是否不大于预设的阈值，若是，进入步骤S606，否则进入步骤S607。
步骤S605至S607与前述步骤S3相对应。需要说明的是，步骤S603－S607虽然针对的是第i个传送网通道，但由于i可取任意值(i不小于1，不大于N，N为传送网通道的总数目)，因此步骤S603至S607实际上是对每一传送网通道所进行的动作。
S606：关闭第i个传送网通道，将带宽约束关系中第i个传送网通道的带宽记为0，返回步骤S602(等待下一周期执行步骤S602)；
假定，传送网通道x1被关闭，则将带宽约束关系中的WPx1记为0。这样，调整其他传送网通道带宽时，调整结果将更加精确。
前已述及，在场景一中，主设备并非是所有传送网通道的边缘设备。因此，关闭传送网通道包括两种情况：
一种情况：对于以主设备为边缘设备的建立传送网通道，可由主设备触发控制关闭该传送网通道。
另一种情况：对于以从设备为边缘设备的建立传送网通道，主设备通知从设备触发控制关闭该传送网通道。
S607：基于带宽约束关系和第i个传送网通道的流量信息，计算出上述传送网通道(本步骤中即为第i个传送网通道)所需的带宽值，并将上述传送网通道的带宽调整为上述所需的带宽值，返回步骤S602(等待下一周期执行步骤S602)。
举个比较简单的例子，传送网通道x1(也即第i个传送网通道)的输入流量与输出流量之间的流量差呈上升趋势，需要增加WPx1。
同时，与WPx1相关的带宽约束关系如下：
WPx1+WPx2+…+WPxk≤mGbps；
WPx1+WPy2+…+WPyk≤nGbps；
……
WPx2+WPy2+…+WPyk≤NGbps。
则可计算出WPx1的最大值，或计算出WPx1的取值范围。从而可将传送网通道x1的带宽调整为最大值，或从WPx1的取值范围中确定一个带宽，将传送网通道x1的带宽调整至所确定出的带宽即可。
前已述及，在场景一中，主设备并非是所有传送网通道的边缘设备。因此，“将上述传送网通道的带宽调整为上述所需的带宽值”包括两种情况：
一种情况：对于以主设备为边缘设备的建立传送网通道，可由主设备触发控制将该传送网通道的带宽调整为上述所需的带宽值。
另一种情况：对于以从设备为边缘设备的建立传送网通道，主设备通知从设备触发控制将该传送网通道的带宽调整为上述所需的带宽值。
需要说明的是，在传送网和数据通信网任意组网的场景中，由于传送网通道的带宽约束是关联在一起的，单个设备如果自行调整的话，容易引起不同设备的带宽调整的冲突。因此，本实施例中设置主设备统一周期性确定传送网通道带宽，并周期性对传送网通道带宽进行管理。
更具体的，主设备可循环计数产生计算周期序号并下发给从设备(可以在OTN或SDH帧中插入帧序号)。从设备按计算周期反馈监控的相关传送网通道中业务数据的流量信息。
主设备根据传送网的配置情况(例如，网络拓扑、传送网通道配置等)计算出各传送网通道带宽之间的约束，根据带宽约束、同一计算周期内的各传送网通道中业务数据的流量信息计算传送网通道所需带宽值。之后，主设备可下发各传送网通道的带宽及对应的计算周期给相应的从设备，主设备和/或从设备触发并控制相应的传送网通 道进行带宽调整。
当然，也可以采用其他的方法，例如在依据计算周期进行同步基础上，采用分布式计算方法：
在传送网中，每个设备管理一部分传送网通道，例如，管理以其为边缘设备的传送网通道。由各主设备自行执行图6上述步骤。
但需要注意的是，如需要下调传送网通道带宽，主设备可将带宽一次性调整至计算出的所需带宽值。而如需上调带宽(例如，当前带宽为50M，计算出的所需带宽值为100M)，则需要小步上调，例如将带宽由50M调整到55M。在上调一小步后，各主设备需要交互信息，重新确定带宽约束条件，然后再重新计算所需带宽值，如还需上调，则继续上调一小步，如此循环反复，直至不再需要上调带宽。
图7为本申请中场景一中的主设备(或边缘设备)的一种结构示意图。传送网中间设备可保持现有的结构和功能不变。如图7所示：
主设备(称边缘设备)可包括：控制单元1、发送方向业务数据处理单元2和通道封装单元3。其中各单元的基本功能如下：
控制单元1用于：根据传送网独立获得的信息指示通道封装单元3建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配；获取发送方向业务数据处理单元2或通道封装单元3提供的、上述传送网通道中业务数据的流量信息，上述流量信息可包括输入流量大小，以及，输入流量与输出流量之间的流量差变化，即流量变化速度；以及，基于上述流量信息指示所述通道封装单元3对上述传送网通道进行控制(上述控制包括关闭上述传送网通道或调整上述传送网通道的带宽)。
发送方向业务数据处理单元2用于：根据控制单元1发送的第一配置信息，对来自数据通信网的业务数据进行处理，并分发至通道封装单元3；
通道封装单元3用于：根据控制单元1的指示(第二配置信息)建立传送网通道，以及，根据控制单元1的指示对上述传送网通道进行控制。
上述控制单元1可为主控线卡(线卡也可称为板卡或单板)上的处理器，发送方向业务数据处理单元2可为支路线卡上的硬件模块(例如芯片)，通道封装单元3可为支路线卡或线路线卡上的硬件模块(例如芯片)。当然，发送方向业务数据处理单元2和通道封装单元3也可位于同一单板上。
此外，发送方向业务数据处理单元2或通道封装单元3还可用于提供传送网通道中业务数据的流量信息。
在不同的结构中，业务数据可缓存于发送方向业务数据处理单元2中，或者，缓存于通道封装单元3中。若业务数据缓存于发送方向业务数据处理单元2中，由发送方向业务数据处理单元2提供流量信息(缓存填充状况)，而若业务数据缓存于通道封装单元3中，则由通道封装单元3提供流量信息(缓存填充状况)。
下面，将介绍上述主设备(或边缘设备)的两种具体硬件结构。
图8a为本申请场景一中的主设备(或边缘设备)的一种硬件结构示意图。
请参见图8a，上述主设备(或称边缘设备)中的通道封装单元3包括缓存模块31和传送网通道设置及信号封装模块32，发送方向业务数据处理单元2包括发送方向数通业务数据处理模块21，控制单元1包括控制器11。
其中，控制器11可用于：
1)根据传送网独立获得的信息指示传送网通道设置及信号封装模块32建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配。
2)(作为主设备时)根据传送网独立获得的信息，通知从设备触发控制建立传送网通道。
3)根据建立的传送网通道，配置发送方向数通业务数据处理模块21的输出端口(向发送方向数通业务数据处理模块21发送第一配置信息)。
发送方向数通业务数据处理模块21连接缓存模块31的一侧可认 为是出口处。输出端口具体指发送方向数通业务数据处理模块21向缓存模块31输出业务数据的输出端口。
一般的，一个传送网通道对应一个输出端口，因此，在需要建立或者关闭传送网通道时，需要配置发送方向数通业务数据处理模块21的输出端口。
而发送方向数通业务数据处理模块21不与缓存模块31连接的一侧有输入端口，可认为与数据通信网(例如IP网)连接。
由于主设备可能是多个传送网通道的边缘设备，而传送网通道与输出端口一般是一一对应的，因此，发送方向数通业务数据处理模块21的输入端口可能对应N个输出端口(N大于1)。一旦建立或关闭传送网通道，输入端口对应的输出端口数也需要相应增加或减少，这将引起路由表变化，进而IP网检测到路由表变化后，会自动触发业务数据流量重新分配。
4)在传送网通道入口处的输入流量大小一段时间内持续不大于阈值时，触发并控制传送网通道设置及信号封装模块32关闭传送网通道。
5)(作为主设备)在传送网通道入口处的输入流量大小一段时间内持续不大于阈值时，通知从设备触发并控制关闭传送网通道。
6)使用传送网配置信息(例如网络拓扑、通道配置等)(周期性或非周期性)确定与传送网通道相关的带宽约束关系(此为主设备功能，作为从设备的边缘设备可不具备)。
如何确定带宽约束关系请参见本文前述记载，在此不作赘述。
7)(作为主设备)在传送网通道入口处的输入流量大小一段时间内持续大于阈值时，基于带宽约束条件和传送网通道的流量信息(缓存填状况)，计算出传送网通道所需带宽值；
上述流量信息(缓存状况)由缓存模块31和/或从设备的控制器(周期性或非周期性)送来。
8)(作为从设备)将缓存模块31(周期性或非周期性)送来的流量信息(缓存状况)上报主设备。
9)触发并控制传送网通道设置及信号封装模块32将传送网通道的带宽调整到上述所需的带宽值。
10)(作为主设备)将传送网通道所需的带宽值发送给从设备。
发送方向数通业务数据处理模块21可用于：
1)按照控制器11输出的端口配置，配置出口处(输出到缓存模块31的方向)的队列和输出端口。
在缓存模块31中，是以队列存储发送方向数通业务数据处理模块21输出的业务数据的。
队列与传送网通道一一对应，是针对传送网通道分配的缓存。
显然，当新建一个传送网通道时，一般会新增一个输出端口，相应的，也会新增一个队列。而当关闭一个传送网通道时，也会关闭(或删掉)一个输出端口，相应的，也会关闭(或取消)相应的队列。
2)按照出口处的队列和端口的配置，以将业务数据分发到对应的队列和输出端口。
缓存模块31可用于：
1)接收发送方向数通业务数据处理模块21送来的数据进行缓存(缓存至队列)。
2)根据传送网通道设置及信号封装模块32请求，将缓存的数据送往传送网通道设置及信号封装模块32；
3)将传送网通道对应的缓存填充状况送给控制器11。
传送网通道设置及信号封装模块32可用于：
1)在控制器11的指示下，建立传送网通道；
2)在控制器11的指示下，将传送网通道的带宽调整到所需带宽值；或者在控制器11的指示下，关闭传送网通道。
3)将来自缓存模块31的数据封装到传送网通道对应的容器中去。(如果传送网通道关闭则省略这部分)。
这里的容器可指数据帧。传送网是将信令和业务数据放在数据帧的固定位置一起传输的。只要知道帧头，就可以分别提取出信令和业务数据。
封装时可以去掉无效数据，例如在OTN网络或SDH网络中采用GFP-F(Generic Framing Procedure-Frame Mapped)的方式。
4)接收来自控制器11的控制通讯信息，封装进传送网通道对应的容器的开销中，以构建不同设备的控制器之间的控制信息交互通道。
前已述及，在建立、关闭、调整时，边缘设备可向其他传送网设备发送控制通讯信息。实际中，控制通信信息是封装进数据帧的开销中发出的。而从设备向主设备上报的流量信息也是封装在传送网通道对应的容器的开销中，由传送网通道设置及信号封装模块32发送出去的。
图8b为本申请场景一中的主设备(或边缘设备)的另一种硬件结构示意图。与图8a相比，新增模块的主要功能如下：
1)发送方向光电转换模块主要用于：将发送方向接收的光信号转换成电信号(内含输入的业务数据)送给发送方向数通业务数据处理模块21。
2)发送方向电光转换模块主要用于：将传送网通道设置及信号封装模块32送来的电信号(内含传送网通道对应的信号)转换成光信号发送出去。
3)接收方向光电转换模块功能主要用于：将接收方向接收的光信号转换成电信号，送给传送网通道信号解封装模块。
4)传送网通道信号解封装模块主要用于：根据控制器11送来的传送网通道配置信息，从接收的电信号中的传送网通道容器中提取业务数据，送给接收方向数通业务数据处理模块处理。
需要说明的是，这里的通道配置信息分为两种情况：一种情况是将传送网通道按照双向通道配置，在此情况下，传送网通道信号解封装模块接收到的通道配置信息和控制器11送给传送网通道设置及信号封装模块32的通道配置信息一起描述了双向通道配置的情况：即双向通道中两个方向的通道带宽相同、连接关系一致。所谓的连接关系一致，指的是，两个方向所途经的边缘节点和中间节点相同。例如，一个方向是A－〉B－〉C，另一个方向是C－〉B－〉A。
另外一种情况是将传送网通道按照单向通道配置。在此情况下，传送网通道信号解封装模块接收到的通道配置信息和控制器11送给传送网通道设置及信号封装模块32的通道配置信息分别描述的是不同的单向通道，这两个单向通道带宽可以不同、连接关系也可以不同。例如，两个单向通道带宽一个是5M，一个是10M，并且，一个单向通道途经A－〉B－〉C，另一个单向通道途经C－〉D－〉E－〉A。
5)接收方向数通业务数据处理模块主要用于：对传送网通道信号解封装模块送来的业务数据进行处理以分发到自身的输出端口。
6)接收方向电光转换模块功能主要用于：将接收方向数通业务数据处理模块的输出端口送来的电信号转换成光信号发送出去。
图9a为本申请的主设备(或边缘设备)的另一种硬件结构示意图。
图9b为本申请的主设备(或边缘设备)的另一种硬件结构示意图。
参见图9a和图9b，在该结构中，上述主设备(或称边缘设备)中的通道封装单元3包括传送网通道设置及信号封装模块32，发送方向业务数据处理单元2包括发送方向数通业务数据处理模块21和发送方向链路划分模块22，控制单元1包括控制器11。
图9a或图9b所示控制器11与图8a(或图8b)所示控制器11作用近似，不同之处在于以下几点：
1)根据建立的传送网通道，配置发送方向数通业务数据处理模块21的输出端口和发送方向链路划分模块22的输出端口(向这两个模块发送第一配置信息)。
发送方向链路划分模块22连接传送网通道设置及信号封装模块32。发送方向链路划分模块22所管理的发送方向链路的带宽与传送网通道设置及信号封装模块32所管理的传送网通道的带宽相匹配，也就是说发送方向链路划分模块22所管理的发送方向链路的带宽在传送网通道设置及信号封装模块执行信号封装所要求的输入信号带宽范围内。
发送方向链路划分模块22又与发送方向数通业务数据处理模块21连接。发送方向链路划分模块22按照控制器11送来的端口配置信息中的带宽信息接收发送方向数通业务数据处理模块21送来的数通业务数据，如果发送方向数通业务数据处理模块21送来的数通业务数据流量过大(例如大于发送防线链路划分模块22根据端口配置信息设置的阈值)，则采用反压信息通知发送方向数通业务数据处理模块减小发送的数通业务数据的流量。
因此，新建传送网通道后，需要发送方向数通业务数据处理模块21新增输出端口，发送方向链路划分模块22需新增发送方向链路，并将发送方向数通业务数据处理模块21新增的输出端口与发送方向链路划分模块22新增的发送方向链路相映射(通过配置发送方向数通业务数据处理模块21的输出端口和发送方向链路划分模块22的链路实现)；
同时，也需要将发送方向链路划分模块22新增的发送方向链路与新建的传送网通道相映射(通过配置发送方向链路划分模块22的链路实现)。
2)(作为主设备)在传送网通道入口处的输入流量大小一段时间内持续大于阈值时，基于带宽约束条件和传送网通道的流量信息(缓存填状况)，计算出传送网通道所需带宽值；
上述流量信息(缓存状况)由发送方向数通业务数据处理模块21和/或从设备的控制器(周期性或非周期性)送来。
3)(作为从设备)将发送方向数通业务数据处理模块21(周期性或非周期性)送来的流量信息(缓存状况)上报主设备。
图9a或图9b所示发送方向数通业务数据处理模块21与图8a(或图8b)所示发送方向数通业务数据处理模块21作用近似，不同之处在于：
1)根据发送方向链路划分模块22送来的反压信息，按照出口处的输出端口配置，对输入的业务数据进行处理并分发到对应的输出端口；将暂时无法发送的业务数据缓存在本地对应的队列中。
所谓的反压信息，是用来指示反向压制的信息，它的传输方向与数据传送方向相反。
发送方向链路划分模块22针对每一发送方向链路设置缓存，由于发送方向链路的带宽与传送网通道的带宽相匹配，则如果发送方向数通业务数据处理模块21向发送方向链路划分模块22输出的(针对某传送网通道)业务数据流量过大，发送方向链路划分模块22将向发送方向数通业务数据处理模块21发送反压信息，以通知发送方向数通业务数据处理模块21其输出端口的带宽不要超过传送网通道所要求的对应的带宽。
发送方向数通业务数据处理模块21则控制相应输出端口的带宽不超过传送网通道设置及信号封装模块32进行信号封装所要求的范围。
发送方向数通业务数据处理模块21内部(本地)为每一输出端口(或可称传送网通道)设置队列，以缓存经由输出端口输出的业务数据，暂时无法发送的业务数据可缓存在发送方向数通业务数据处理模块21本地对应的队列中。
2)将与传送网通道相应的队列的缓存填充状况发送给控制器11。
发送方向链路划分模块22为新增模块，其可用于：
1)按照控制器11输出的端口配置，配置发送方向链路的数量和带宽。例如，每个链路绑定若干数量的比特块。
2)根据发送方向链路的数量和带宽的配置情况以及发送方向数通业务数据处理模块21送来的数据通信网的业务数据的流量情况，提供反压信息给发送方向数通业务数据处理模块21。
3)按照发送方向链路的数量和带宽的配置情况，将发送方向数通业务数据处理模块21送来的业务数据进行封装，输出至传送网通道设置及信号封装模块32。
图9a或图9b所示实施例，直接借用发送方向数通业务数据处理模块21和发送方向链路划分模块22中的缓存，不需要再如图8a(或图8b)所示单独设置缓存模块31。
图9a或图9b所示传送网通道设置及信号封装模块32与图8a(或图8b)所示传送网通道设置及信号封装模块32作用近似，不同之处在于：
1)将来自发送方向链路划分模块22的数据封装到传送网通道对应的容器中去(如果传送网通道关闭则省略这部分)。
图9b中未标号的模块的作用请参见图8b所示实施例中的介绍，在此不作赘述。
场景二：城域组网(单归属)。
图10为应用本申请的网络控制方法的场景二的网络架构示意图。
在本场景下，组网方式是用户设备的业务都需要经过一个集中的业务处理设备进行集中处理。例如，在移动回传中，(数据通信网中)基站的业务都需要经过业务处理设备SGW(Serving Gateway)/MME(Mobility Management Entity)进行处理(请参见图10)；在固定宽带接入中，OLT(Optical Line Terminal)的业务都需要经过业务处理设备BRAS(Broadband Remote Access Server)进行处理。
在传送网中，则存在一个集中的传送网设备和集中的业务处理设备相连(见图10的edOTN A)，所有的数据通信网络的业务数据都会经过集中的传送网设备。
在上述组网方案中，传送网中的所有传送网通道都以edOTN A为边缘设备，其他传送网设备为中间设备。则在本场景中，上述步骤S1-S3的执行主体为集中的传送网设备，该集中的传送网设备也可称为主设备。
图11为场景二中本申请的网络控制方法的一种实施方式的流程图。
在本场景中，在一个周期内，请参见图11，主设备所执行的步骤如下：
S1101：主设备根据传送网独立获得的信息建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配。
所建立的传送网通道具有初始带宽。并且，所建立的传送网通道 可以是单向的，也可以是双向的。
主设备可将数据通信网中无直接连接的路由器/交换机对列出来，按一定顺序或一定策略(例如刚关闭的传送网通道需要暂停一段时间才能再尝试等等)周期性选择在无直接连接的路由器/交换机对之间建立传送网通道。
实际中，可由欲建立的传送网通道的边缘设备触发建立该传送网通道。
在场景二中，各传送网通道的边缘设备均为edOTN A(也即主设备)，因此可直接由主设备触发建立传送网通道。触发方式请参见图6实施例部分的相关记载，在此不作赘述。
S1102：主设备使用上述传送网的配置信息确定与每一传送网通道(可表示为第i个传送网通道)相关的带宽约束关系；
具体内容请参见图6实施例部分的相关记载，在此不作赘述。
S1103：主设备检测第i个传送网通道入口处的业务数据流量，得到第i个传送网通道中业务数据的流量信息(与前述步骤S2对应)。
前已述及，上述流量信息包括输入流量大小，以及，输入流量与输出流量之间的流量差变化。
S1104：主设备判断第i个传送网通道入口处的输入流量大小是否不大于预设的阈值，若是，进入步骤S1105，否则进入步骤S1106。
步骤S1104至S1106与前述步骤S3相对应。需要说明的是，步骤S1102－S1106虽然针对的是第i个传送网通道，但由于i可取任意值(i不小于1，不大于N，N为传送网通道的总数目)，因此步骤S602至S606实际上是对每一传送网通道所进行的动作。
S1105：关闭第i个传送网通道，将带宽约束关系中第i个传送网通道的带宽记为0，返回步骤S1101(等待下一周期执行步骤S1101)；
假定，传送网通道x1被关闭，则将带宽约束关系中的WPx1记为0。这样，调整其他传送网通道带宽时，调整结果将更加精确。
S1106：基于带宽约束关系和第i个传送网通道的流量信息，计算出上述传送网通道所需的带宽值，并将上述传送网通道的带宽调整 为上述所需的带宽值，返回步骤S1101(等待下一周期执行步骤S1101)。
在场景二中，各传送网通道的边缘设备均为edOTN A(也即主设备)，因此可由主设备触发关闭该传送网通道或调整该传送网通道的带宽。
边缘设备(主设备)的基本结构可参见图7－图9b。
下面，将介绍场景二下主设备的两种具体硬件结构。
图12a为本申请场景二中的主设备(或边缘设备)的一种结构示意图。
图12b为本申请场景二中的主设备(或边缘设备)的另一种结构示意图。
请参见图12a或图12b，上述主设备(或称边缘设备)中的通道封装单元3包括缓存模块31和传送网通道设置及信号封装模块32，发送方向业务数据处理单元2包括发送方向数通业务数据处理模块21，控制单元1包括控制器11。
其中，控制器11可用于：
1)根据传送网独立获得的信息指示传送网通道设置及信号封装模块32建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配。
2)根据建立的传送网通道，配置发送方向数通业务数据处理模块21的输出端口(向发送方向数通业务数据处理模块21发送第一配置信息)。
具体描述请参见图8a及相关记载，在此不作赘述。
3)在传送网通道入口处的输入流量大小一段时间内持续不大于阈值时，触发并控制传送网通道设置及信号封装模块32关闭传送网通道。
4)使用传送网配置信息(例如网络拓扑、通道配置等)确定与传送网通道相关的带宽约束关系；
5)基于带宽约束条件和缓存模块31送来的传送网通道中业务数 据的流量信息(缓存填状况)，计算出传送网通道所需带宽值；
如何确定带宽约束关系请参见本文前述记载，在此不作赘述。
6)触发并控制传送网通道设置及信号封装模块32将传送网通道的带宽调整到上述所需的带宽值。
其他模块的作用可参见图8a或图8b相关记载，在此不作赘述。
图13a为本申请场景二中的主设备(或边缘设备)的另一种结构示意图。
图13b为本申请场景二中的主设备(或边缘设备)的另一种结构示意图。
图13a或图13b示出了上述主设备的另一种具体结构。在该结构中，上述主设备(或称边缘设备)中的通道封装单元3包括传送网通道设置及信号封装模块32，发送方向业务数据处理单元2包括发送方向数通业务数据处理模块21和发送方向链路划分模块22，控制单元1包括控制器11。
图13a或图13b所示控制器11与图9a(或图9b)主设备的控制器11作用近似，在此不作赘述。
图13a或图13b其他模块的作用请参见图8b、图9a、图9b所示实施例中的介绍，在此不作赘述。
需要说明的是，在城域网中存在着不同方向的流量大小不一致的情况，下行方向(从集中的业务处理设备到用户设备的方向)的流量远大于上行方向的(从用户设备到集中的业务处理设备的方向)，而传送网通道一般是双向配置的，也就是传送网通道在两个方向上配置的带宽一般是一样的，这样在城域组网中，只需要算出下行的传送网通道带宽，上行的传送网通道带宽和下行保持一致即可。
在场景二中，中间设备的结构和功能与保持现有的结构和功能不变。
场景三：组网(双归属)。
图14为应用本申请的网络控制方法的场景三的网络架构示意图。
请参见图14，在本场景下，传送网中存在两个集中的业务处理 设备(edOTN A1和edOTN A2)。也即，传送网中的传送网通道以edOTN A1或edOTN A2为边缘设备，其他传送网设备为中间设备。
双归属时，数据通信网络的设备会对双归属的两个链路按照带宽比例进行流量均衡，因此双归属的两个链路对应的缓存填充状况大致相同，可以采用其中之一进行带宽调整的计算。
也即可以设置一个集中的传送网设备为主设备(例如上图中的edOTN A1)，主设备可以仅根据监测的自身的数据通信网中的业务数据的流量情况计算传送网通道带宽。
图15为场景三中本申请的网络控制方法的一种实施方式的流程图。
在本场景中，在一个周期内，请参见图15，主设备所执行的步骤如下：
S1501：设置双归属业务对应的传送网通道之间的带宽比例，设置一个集中设备为主设备，另一集中设备为从设备。
例如，可设置edOTN A1为主设备，edOTN A2为从设备。
S1502：主设备根据传送网独立获得的信息建立传送网通道，以触发数据通信网中的业务数据流量进行重新分配。
所建立的传送网通道具有初始带宽。
主设备可将数据通信网中无直接连接的路由器/交换机对列出来，按一定顺序周期性得在无直接连接的路由器/交换机对之间建立传送网通道。
在场景三中，主设备并非是所有传送网通道的边缘设备。因此，建立传送网通道包括两种情况：
一种情况：对于以主设备为边缘设备的待建立传送网通道，可由主设备触发控制建立。
另一种情况：对于以从设备为边缘设备的待建立传送网通道，主设备通知从设备触发控制建立。
具体的建立方式可参考现有的建立方式，在此不作赘述。
S1503：主设备使用上述传送网的配置信息及带宽比例确定与每 一传送网通道(可表示为第i个传送网通道)相关的带宽约束关系。
上述配置信息可包括传送网网络拓扑、通道配置和带宽比例。
S1504：主设备获取传送网通道中业务数据的流量信息。
具体的，主设备对于以自身为边缘设备的传送网通道，会检测以自身为边缘设备的传送网通道入口处的业务数据流量，得到上述传送网通道中业务数据的流量信息。
而对于以从设备为边缘设备的传送网通道，则可由从设备检测该传送网通道入口处的业务数据流量，得到该传送网通道中业务数据的流量信息，并将流量信息提交至主设备。
前已述及，上述流量信息包括输入流量大小，以及，输入流量与输出流量之间的流量差变化。
S1505：主设备判断第i个传送网通道入口处的输入流量大小是否不大于预设的阈值，若是，进入步骤S1506，否则进入步骤S1507。
需要说明的是，步骤S1502－S1507虽然针对的是第i个传送网通道，但由于i可取任意值(i不小于1，不大于N，N为传送网通道的总数目)，因此步骤S1502至S1507实际上是对每一传送网通道所进行的动作。
S1506：关闭第i个传送网通道，将带宽约束关系中第i个传送网通道的带宽记为0，返回步骤S1502(等待下一周期执行步骤S1502)；
相关细节请参见图6及相关记载，在此不作赘述。
S1507：基于带宽约束关系和第i个传送网通道的流量信息，计算出上述传送网通道所需的带宽值，并将上述传送网通道的带宽调整为上述所需的带宽值，返回步骤S1502(等待下一周期执行步骤S1502)。
在场景三中，主设备或从设备的结构及功能请参见图7－图9b，或图12a－图13b及相关记载，在此不作赘述。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互 相参见即可。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (12)

  1. 一种网络控制方法，其特征在于，包括：
    获取数据通信网的设备分布信息和传送网的网络拓扑信息；
    根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
    检测所述传送网通道中来自数据通信网的业务数据的流量信息；
    根据所述流量信息，调整所述传送网通道的带宽；
    或者，根据所述流量信息，关闭所述传送网通道。
  2. 根据权利要求1所述的方法，其特征在于，所述检测所述传送网通道中来自数据通信网的业务数据的流量信息，具体包括：
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度；
    所述根据所述流量信息，调整所述传送网通道的带宽，具体包括：
    确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；
    增加所述传送网通道的带宽；
    或者，所述根据所述流量信息，调整所述传送网通道的带宽，具体包括：
    确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；
    减小所述传送网通道的带宽。
  3. 根据权利要求1所述的方法，其特征在于，所述检测所述传送网通道中来自数据通信网的业务数据的流量信息，具体包括：
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
    所述根据所述流量信息，关闭所述传送网通道，具体包括：
    确定所述输入流量在预设时间内持续小于第四预设阈值；
    关闭所述传送网通道。
  4. 根据权利要求2或3任一项所述的方法，其特征在于，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量，具体包括：
    获取缓存中填充的数据量；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储；
    根据传送网通道的输出流量以及所述缓存中填充的数据量，确定所述输入流量。
  5. 根据权利要求2所述的方法，其特征在于，所述检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度，具体包括：
    获取缓存中填充的数据量的变化速度；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储。
  6. 根据权利要求1所述的方法，其特征在于，所述关闭所述传送网通道之后，还包括：
    按照预设时间顺序，再次建立所述传送网通道；
    检测所述传送网通道中来自数据通信网的业务数据的流量信息；
    根据所述流量信息，调整所述传送网通道的带宽；
    或者，根据所述流量信息，关闭所述传送网通道。
  7. 一种网络控制装置，其特征在于，包括：
    信息获取单元，用于获取数据通信网的设备分布信息和传送网的网络拓扑信息；
    传送网通道建立单元，用于根据所述数据通信网的设备分布信息和所述传送网的网络拓扑信息，建立传送网通道；所述传送网通道用于传输所述数据通信网中的第一设备发送至第二设备的业务数据；
    流量信息检测单元，用于检测所述传送网通道中来自数据通信网的业务数据的流量信息；
    带宽调整单元，用于根据所述流量信息，调整所述传送网通道的带宽；或者，根据所述流量信息，关闭所述传送网通道。
  8. 根据权利要求7所述的装置，其特征在于，所述流量信息检测单元，具体用于：
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量变化速度；
    所述带宽调整单元，具体用于：
    确定所述输入流量大于第一预设阈值并且所述输入流量变化速度大于第二预设阈值；
    增加所述传送网通道的带宽；
    或者，所述带宽调整单元，具体用于：
    确定所述输入流量大于第一预设阈值并且所述流量变化速度小于第三预设阈值；
    减小所述传送网通道的带宽。
  9. 根据权利要求7所述的装置，其特征在于，所述流量信息检测单元，具体用于：
    检测所述传送网通道中来自数据通信网的业务数据的单位时间内的输入流量；
    所述带宽调整单元，具体用于：
    确定所述输入流量在预设时间内持续小于第四预设阈值；
    关闭所述传送网通道。
  10. 根据权利要求8或9任一项所述的装置，其特征在于，所述流量信息检测单元，具体用于：
    获取缓存中填充的数据量；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储；
    根据传送网通道的输出流量以及所述缓存中填充的数据量，确定所述输入流量。
  11. 根据权利要求8所述的装置，其特征在于，所述流量信息检测单元，具体用于：
    获取缓存中填充的数据量的变化速度；所述来自数据通信网的业务数据在封装进所述传送网通道对应的容器中之前采用所述缓存进行存储。
  12. 根据权利要求7所述的装置，其特征在于，所述传送网通道建立单元，还用于：
    关闭所述传送网通道之后，按照预设时间顺序，再次建立所述传送网通道。
PCT/CN2015/091879 2014-12-29 2015-10-13 网络控制方法及相关装置 WO2016107242A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410834792.2A CN104601429B (zh) 2014-12-29 2014-12-29 网络控制方法及相关装置
CN201410834792.2 2014-12-29

Publications (1)

Publication Number Publication Date
WO2016107242A1 true WO2016107242A1 (zh) 2016-07-07

Family

ID=53126950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/091879 WO2016107242A1 (zh) 2014-12-29 2015-10-13 网络控制方法及相关装置

Country Status (2)

Country Link
CN (1) CN104601429B (zh)
WO (1) WO2016107242A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107682217B (zh) * 2014-01-14 2021-07-27 广东经纬天地科技有限公司 以太网信号调度方法、装置和系统
CN104601429B (zh) * 2014-12-29 2019-02-19 华为技术有限公司 网络控制方法及相关装置
CN105897617A (zh) * 2016-03-30 2016-08-24 中国联合网络通信集团有限公司 下挂设备带宽调速方法及其系统、网络系统
CN113783802A (zh) * 2021-08-09 2021-12-10 新华三大数据技术有限公司 带宽调节方法及系统
CN114866425B (zh) * 2022-03-17 2023-12-05 北京邮电大学 一种调整光业务单元连接的带宽的方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003023447A (ja) * 2001-07-11 2003-01-24 Nippon Telegr & Teleph Corp <Ntt> 光チャネル設定方法および光チャネル設定装置ならびにノードの構成方法
CN101146039A (zh) * 2007-08-14 2008-03-19 中兴通讯股份有限公司 自动调整带宽的装置及其调整方法
CN101309198A (zh) * 2007-05-18 2008-11-19 华为技术有限公司 一种传送网实现方法和网络设备
WO2009030140A1 (fr) * 2007-08-28 2009-03-12 Huawei Technologies Co., Ltd. Procédé, système et dispositif pour une transmission de données de réseau optique passif
CN104601429A (zh) * 2014-12-29 2015-05-06 华为技术有限公司 网络控制方法及相关装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447913B (zh) * 2007-11-27 2011-04-20 华为技术有限公司 确定直达光路的方法和服务器及建立直达光路的系统
CN101459579A (zh) * 2007-12-11 2009-06-17 华为技术有限公司 利用传送网来承载数据业务的方法及装置
CN102904827B (zh) * 2012-10-09 2015-11-25 中国联合网络通信集团有限公司 旁路流量局部分摊方法及旁路组网结构
CN103812778B (zh) * 2014-02-21 2017-06-27 华为技术有限公司 流表项生成方法以及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003023447A (ja) * 2001-07-11 2003-01-24 Nippon Telegr & Teleph Corp <Ntt> 光チャネル設定方法および光チャネル設定装置ならびにノードの構成方法
CN101309198A (zh) * 2007-05-18 2008-11-19 华为技术有限公司 一种传送网实现方法和网络设备
CN101146039A (zh) * 2007-08-14 2008-03-19 中兴通讯股份有限公司 自动调整带宽的装置及其调整方法
WO2009030140A1 (fr) * 2007-08-28 2009-03-12 Huawei Technologies Co., Ltd. Procédé, système et dispositif pour une transmission de données de réseau optique passif
CN104601429A (zh) * 2014-12-29 2015-05-06 华为技术有限公司 网络控制方法及相关装置

Also Published As

Publication number Publication date
CN104601429B (zh) 2019-02-19
CN104601429A (zh) 2015-05-06

Similar Documents

Publication Publication Date Title
EP2983314B1 (en) Oduflex resizing systems and methods
WO2016107242A1 (zh) 网络控制方法及相关装置
US8824504B2 (en) Packet add/drop multiplexer and data transmission method of packet add/drop multiplexer
US9191114B2 (en) Quality of service application for different data flow types
EP2395682A1 (en) A service adaptation method and service adaptation device
EP2978237B1 (en) Device unit, node device, and method and system for adjusting tunnel bandwidth
WO2017088911A1 (en) Switching data signals of at least two types for transmission over a transport network providing both backhaul and fronthaul (xhaul) connectivity
CN104022927B (zh) 固移融合波分接入环及接入方法
JP5404972B2 (ja) 光通信システム、通信装置および帯域制御方法
US11641324B2 (en) OTN transport over a leaf/spine packet network
CN102130787A (zh) 一种网管设备及其管理ODUflex帧的空闲时隙的方法
WO2021093464A1 (zh) 一种数据重组的方法以及装置
US20150229424A1 (en) Otn rate adjustment systems and methods for control plane restoration, congestion control, and network utilization
WO2008043284A1 (fr) Procédé, système et dispositif noeud permettant d&#39;établir une relation de mappage d&#39;identificateurs
JP2016082393A (ja) 多段ｐｏｎシステムのｄｂａ制御装置、ｄｂａ制御方法およびｄｂａ制御プログラム
EP2579520A1 (en) Bandwidth allocation method and device for realizing bandwidth allocation
US10079753B2 (en) Multi-drop unidirectional services in a network
US9781001B2 (en) Transport network tunnel setup based upon control protocol snooping
JP2012204863A (ja) ネットワークシステム、通信制御ノード、被通信制御ノード、及び帯域制御方法
Ramantas et al. A converged optical wireless architecture for mobile backhaul networks
TWI520509B (zh) 環型都會光纖網路資源系統
WO2023143507A1 (zh) 一种带宽调整方法及装置
Das Packet-switched WDM Ring Networks: Performance Analyses of Physical and MAC Layers
JP5779826B2 (ja) 光伝送ネットワークにおける動的でヒットレスなリサイジング
Gumaste et al. Achieving multi-rate dynamic sub-wavelength service provisioning in strongly connected light-trails (SLiTs)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15874927

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15874927

Country of ref document: EP

Kind code of ref document: A1