CN106712994B - Software defined network management method and communication system - Google Patents
Software defined network management method and communication system Download PDFInfo
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Abstract
The invention discloses a software defined network equipment management method and a communication system.A central SDN controller is arranged at a far-end node of a network, and a local SDN controller is arranged at a near-end node of the network; and the central SDN controller of the network far-end node and the local SDN controller of the network near-end node jointly manage the software defined network equipment on the network near-end node. For example, when the network near-end node is in an initial power-on stage or is disconnected from the core network and the like, and other nodes cannot be connected with the central SDN controller of the network far-end node, the local SDN device can be managed through the local SDN controller arranged locally, and the reliability of SDN device management is improved; for another example, when a network near-end node needs to forward a packet through an SDN controller, a local SDN controller may be directly used for forwarding, and the packet does not need to be sent to a network far-end node first and then forwarded through the SDN controller of the network far-end node, so that forwarding efficiency and performance can be improved.
Description
Technical Field
The invention relates to the field of communication, in particular to a software defined network management method and a communication system.
Background
SDN (Software Defined Networking ) is a hotspot in the current network field, and is generally regarded as an evolution direction of future networks by the industry. The standardized control protocol and the software network interface advocated by the SDN provide good support for unified management of resources and development of new services, can provide better network experience for users, and improve the value of the network. Wireless operators also want to integrate SDN devices into their wireless communication devices, provide SDN capabilities, and improve the network value of their wireless devices.
The SDN controller is a device for bearing SDN control layer services, and is responsible for uniformly controlling the SDN devices at the bottom layer and providing network capability call for upper layer service application, and the SDN controller must be deployed in the SDN network. The deployment of the wireless base station device has its own features, and the base station device is generally deployed in a corresponding area according to the coverage requirement and then connected to the core network through the transmission device. If the SDN controller is deployed on the base station side, a large number of SDN devices on the base station side cannot be managed uniformly, so that the SDN controller is generally deployed in a central machine room disposed at a remote end of a network for managing the SDN devices on each base station at present. The following problems may exist with this deployment management approach: (1) the method comprises the steps that connection between a base station and a remote machine room is not established at the initial power-on stage of the base station, and the SDN controller at the remote end cannot manage SDN equipment at the base station side; (2) if a message which needs to be forwarded by the SDN controller exists on the base station, the message needs to be forwarded by the SDN controller at the far end, the path is far, and the performance is low; (3) if the transmission between the base station and the machine room side is disconnected, the management of the SDN controller on the SDN device on the base station is also failed, and the reliability is low.
Disclosure of Invention
The invention provides a software defined network management method and a communication system, and solves the problems that management fails at the initial power-on stage and during broken link and the efficiency is low during message forwarding when only an SDN controller at a far-end of a network is used for managing SDN equipment on a base station in the prior art.
In order to solve the above technical problem, the present invention provides a software defined network management method, including:
arranging a central software-defined network controller at a far-end node of a network, and arranging a local software-defined network controller at a near-end node of the network;
the central software-defined network controller and the local software-defined network controller jointly manage the software-defined network equipment of the network near-end node.
In one embodiment of the invention, arranging the local software defined network controller at a network near end node comprises: the management parameters of the software defined network device of the network near-end node are configured to a local software defined network controller of the network near-end node.
In one embodiment of the present invention, after the local software-defined network controller is disposed at the network near-end node, the method further includes:
after the network near-end node is powered on, the local software-defined network controller of the network near-end node acquires the changed management parameters when detecting that the management parameters of the software-defined network equipment of the network near-end node are changed.
In one embodiment of the invention, deploying a central software defined network controller at a remote node of a network comprises: configuring management parameters of software defined network devices of a network near-end node onto the central software defined network controller.
In one embodiment of the present invention, configuring management parameters of a software defined network device of a network near end node onto the central software defined network controller comprises:
and sending the management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller through the local software-defined network controller of the network near-end node.
In one embodiment of the present invention, sending management parameters of the software-defined network device of the network near-end node to the central software-defined network controller through the local software-defined network controller of the network near-end node comprises:
after the network near-end node is powered on and connected with the central software-defined network controller, the local software-defined network controller on the network near-end node sends the management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller;
and in the normal operation process of the network near-end node, the local software-defined network controller of the network near-end node sends the changed management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller.
In an embodiment of the present invention, the central software-defined network controller and the local software-defined network controller managing the software-defined network device of the network near-end node includes:
and the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node in the power-on process of the network near-end node.
In an embodiment of the present invention, the central software-defined network controller and the local software-defined network controller managing the software-defined network device of the network near-end node includes: and the local software-defined network controller of the network near-end node processes the software-defined network service request sent by the software-defined network equipment at the network near-end node side in the process of powering on the network near-end node or in the process of normally operating the network near-end node.
In an embodiment of the present invention, the managing, by the central software-defined network controller and the local software-defined network controller, the software-defined network device of the network near-end node jointly includes:
when the message at the side of the network near-end node needs to be forwarded by the software-defined network controller, the local software-defined network controller of the network near-end node preferentially forwards the message;
and the central software-defined network controller forwards the message when the local software-defined network controller fails to forward the message.
In an embodiment of the present invention, the managing, by the central software-defined network controller and the local software-defined network controller, the software-defined network device of the network near-end node jointly includes:
the local software-defined network controller on the network near-end node manages the software-defined network equipment on the network near-end node when the network near-end node is disconnected from the central software-defined network controller; and synchronizing management parameters of the software-defined network equipment on the network near-end node to the central software-defined network controller when the network near-end node is reconnected with the central software-defined network controller.
In an embodiment of the present invention, the managing, by the central software-defined network controller and the local software-defined network controller, the software-defined network device of the network near-end node jointly includes:
and the central software-defined network controller issues the configuration information of the software-defined network equipment which needs to be issued to the plurality of network near-end nodes.
In order to solve the above problem, the present invention also provides a wireless communication system, including: a central software-defined network controller disposed at a network remote node and a local software-defined network controller disposed at a network near-end node;
the central software-defined network controller and the local software-defined network controller of the network near-end node are used for jointly managing the software-defined network equipment of the network near-end node.
In an embodiment of the present invention, a local software-defined network controller of the network near-end node is configured with management parameters of a software-defined network device on the network near-end node; and the central software-defined network controller is configured with management parameters of software-defined network equipment on each network near-end node.
In an embodiment of the present invention, the central software-defined network controller and the local software-defined network controller managing the software-defined network device of the network near-end node includes:
and the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node in the power-on process of the network near-end node.
In an embodiment of the present invention, the central software-defined network controller and the local software-defined network controller managing the software-defined network device of the network near-end node includes: and the local software-defined network controller of the network near-end node processes the software-defined network service request sent by the software-defined network equipment at the network near-end node side in the process of powering on the network near-end node or in the process of normally operating the network near-end node.
In an embodiment of the present invention, the managing software-defined network devices on the network near-end node by the central software-defined network controller and the local software-defined network controller in combination includes:
when the message at the side of the network near-end node needs to be forwarded by the software-defined network controller, the local software-defined network controller of the network near-end node preferentially forwards the message;
and the central software-defined network controller forwards the message when the local software-defined network controller fails to forward the message.
In an embodiment of the present invention, the managing software-defined network devices on the network near-end node by the central software-defined network controller and the local software-defined network controller in combination includes:
when the network near-end node is disconnected from the central software-defined network controller, the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node; and synchronizing management parameters of the software-defined network device of the network near-end node to the central software-defined network controller when the network near-end node is reconnected with the central software-defined network controller.
In an embodiment of the present invention, the managing software-defined network devices on the network near-end node by the central software-defined network controller and the local software-defined network controller in combination includes:
and the central software-defined network controller issues the configuration information of the software-defined network equipment which needs to be issued to the plurality of network near-end nodes.
The invention has the beneficial effects that:
the software defined network management method and the communication system provided by the invention are characterized in that a central software defined network controller (central SDN controller) is arranged at a far-end node of a network, and a local software defined network controller (local SDN controller) is arranged at a near-end node of the network; a central SDN controller of a far-end network node and a local SDN controller of a near-end network node jointly manage software defined network equipment (SDN equipment) of the near-end network node. The SDN controller is arranged on a far-end node of a network, the software-defined network controllers are simultaneously arranged on the far-end node of the network and a near-end node of the network, and the software-defined network equipment on the near-end node side of the network is managed by combining the software-defined network controllers arranged on the two sides; for example, in the initial stage of power-on of a network near-end node or when other nodes such as a core network broken link and the like are not connected with a central software-defined network controller of a network far-end node, the management of local software-defined network equipment can be realized through a local software-defined network controller arranged locally, and the reliability of software-defined network equipment management is improved; for another example, when the network near-end node needs to forward the packet through the software-defined network controller, the local software-defined network controller may be directly used for forwarding, and the packet does not need to be sent to the network far-end node first and then forwarded through the software-defined network controller of the network far-end node, so that the forwarding efficiency and performance can be improved.
Drawings
Fig. 1 is a flowchart illustrating a software-defined network management method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a communication system according to a second embodiment of the present invention.
Detailed Description
The SDN controllers are simultaneously arranged on the network far-end node (which can be a central machine room) and the network near-end node (such as a base station) and the SDN controllers arranged on the two sides are combined to realize the management of the SDN equipment on the network near-end node side, so that the reliability and the performance of the management of the SDN equipment can be improved. The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the method for managing a software-defined network in the present embodiment includes:
step 101: arranging a central software-defined network controller on a far-end node of a network, and arranging a local software-defined network controller on a near-end node of the network;
step 102: the central software-defined network controller and the local software-defined network controller on the network near-end node jointly manage the software-defined network equipment on the network near-end node. For example, when the network near-end node is powered on in an initial stage or is disconnected from the core network and the like, and other nodes cannot be connected with the central software defined network controller of the network far-end node, the management of local SDN equipment can be directly realized through the local SDN controller arranged locally, and the management reliability of the SDN equipment is improved; for another example, when a network near-end node needs to forward a packet through an SDN controller, a local SDN controller may be directly used for forwarding, and the packet does not need to be sent to a network far-end node first and then forwarded through the SDN controller of the network far-end node, so that forwarding efficiency and performance can be improved.
In the step 101, when the local software-defined network controller is disposed on the network near-end node, the method includes configuring the management parameters of the software-defined network device on the network near-end node to the local software-defined network controller of the network near-end node. The management parameters of the software defined network device in this embodiment include, but are not limited to, at least one of configuration information, device capability information, link information, and topology information.
In this embodiment, after the local software-defined network controller is arranged on the network near-end node, and after the network near-end node is powered on, that is, during the operation of the network near-end node, the local software-defined network controller on the network near-end node obtains the updated and changed management parameters when detecting that the management parameters of the software-defined network device on the network near-end node are changed.
In this embodiment, the central software-defined network controller is disposed at the far-end node of the network, and the management parameters of the software-defined network device at the near-end node of the network also need to be configured to the central software-defined network controller. The network remote node in this embodiment may also be arranged with a core network device. The core network device and the central software definition network controller can use Ethernet for connection communication, and can also be in different sub-networks for communication through an IP network. In the embodiment, the relevant management parameters can be directly sent to the central software-defined network controller for configuration through each software-defined network device on the network near-end node directly or through the core network device; the local software defined network controller on the network near-end node can be directly used for sending the management parameters of the software defined network equipment on the network near-end node to the central software defined network controller of the network far-end node directly or through the core network equipment, and the local software defined network controller has the management parameters of the software defined network equipment on the network near-end node, so that the configuration efficiency can be improved, and the resource utilization rate can be improved. The sending of management parameters of the software-defined network device on the network near-end node to the central software-defined network controller by the local software-defined network controller on the network near-end node comprises:
after the network near-end node is powered on and connected with the central software-defined network controller, the local software-defined network controller on the network near-end node sends the management parameters of the software-defined network equipment on the network near-end node to the central software-defined network controller; the management parameters at this time are management parameters set at the initial time of each software-defined network device. In the normal operation process of the network near-end node, the management parameters of each software-defined network device may change, and at this time, the local software-defined network controller on the network near-end node may also send the obtained management parameters of the software-defined network device on the network near-end node after the change to the central software-defined network controller for updating.
After the central software-defined network controller of the network far-end node acquires the management parameters of the software-defined network equipment on each network near-end node in the above manner, the management parameters of the software-defined network equipment on the network near-end node can be controlled. The local software-defined network controller of each network near-end node also has the management parameters of local software-defined network equipment, so that the management of the local software-defined network equipment of the network near-end node can be realized. In this embodiment, the central software-defined network controller and each software-defined network controller on each network near-end node have their own communication addresses, and the communication addresses between the software-defined network controllers are different; the corresponding service software may access the corresponding software-defined network controller via a corresponding communication address (e.g., IP) to initiate a network service request. In this embodiment, the service software on the network near-end node may send the network service request to the corresponding software-defined network controller through the corresponding software-defined network device on the network near-end node.
As can be seen from the above analysis, in this embodiment, both the central software-defined network controller of the network remote node and the local software-defined network controller of the network near-end node have the software-defined network device management function. Therefore, the software defined network equipment can be effectively managed by combining the software defined network equipment and the software defined network equipment according to different application scenes, and the reliability, the stability and the flexibility of management can be improved. Several application scenarios are described below as examples.
When the network near-end node is initially powered on, the network near-end node does not establish connection with the core network equipment of the network far-end node, namely does not establish connection with the central software-defined network controller of the network far-end node, and the local software-defined network controller on the network near-end node manages the software-defined network equipment of the network near-end node in the power-on process of the network near-end node. In the process of powering on the network near-end node, a network service request (also referred to as an SDN network service request) of related service software on the network near-end node may also be processed by the local software-defined network controller, that is, the local software-defined network controller on the network near-end node may also be used to process a network server request of the related service software in the process of powering on the network near-end node. After the network near-end node is powered on and is connected with the central software-defined network controller of the network far-end node, the local software-defined network controller of the network near-end node synchronizes the management parameters of the software-defined network equipment on the network near-end node to the central software-defined network controller.
In the normal operation process of the network near-end node, when a message at the network near-end node side needs to be forwarded by the software defined network controller, the local software defined network controller on the network near-end node preferentially forwards the message; that is, when the message at the network near-end node side needs to be forwarded by the software-defined network controller, a forwarding strategy is adopted, which preferably adopts the local software-defined network controller on the network near-end node for forwarding, and when the local software-defined network controller fails to forward the message, the central software-defined network controller of the network far-end node is adopted to forward the message. This may improve forwarding efficiency.
In the normal running process of the network near-end node, when the service software running locally at the network near-end node side has a network service request, preferably adopting a local software definition network controller on the network near-end node to process the network service request; and when the local software-defined network controller fails to process, the central software-defined network controller of the remote node of the network is adopted to process the network service request. In this embodiment, the local software-defined network controller on the near-end node side of the wireless network only manages the software-defined network devices on the near-end node of the wireless network, and does not manage the software-defined network devices on other near-end nodes of the wireless network.
In the normal operation process of the network near-end node, when the software-defined network devices on the plurality of network near-end nodes need to be configured simultaneously, the central software-defined network controller needs to send configuration information of the software-defined network devices of the plurality of network near-end nodes to realize the unified management of the plurality of network near-end nodes.
In the normal operation process of the network near-end node, when the network near-end node is disconnected with the central software-defined network controller due to problems such as transmission and the like, the local software-defined network controller on the network near-end node manages software-defined network equipment on the network near-end node; when the network near-end node is reconnected with the central software-defined network controller, the management parameters of the software-defined network equipment on the network near-end node are synchronized to the central software-defined network controller again; so that the central software-defined network controller can effect control of the software-defined network devices on the network's near-end nodes.
In this embodiment, the network near-end node side and the network far-end node are simultaneously provided with the software-defined network controller, so that compared with the prior art, the stability of software-defined network control is improved, the software-defined network equipment on the wireless network near-end node side can be uniformly managed in a large scale, and the service request of local service software of the network near-end node to the software-defined network can be solved.
Example two:
the present embodiment provides a wireless communication system, please refer to fig. 2, which includes: a core network device 11 and a central software-defined network controller 12 arranged at a network remote node 1 (i.e. the central software-defined network controller 12 is provided at the network remote node), and a local software-defined network controller 21 arranged at a network near node 2; the central software-defined network controller 12 and the local software-defined network controller 21 on the network near-end node 2 are used for jointly managing the software-defined network devices on the network near-end node 2. The core network device 11 and the central software defined network controller 12 may communicate using ethernet or may communicate over an IP network in different subnets.
The local software defined network controller 21 on the network near-end node 2 in this embodiment may be a lightweight software defined network controller; the central software-defined network controller 12 of the remote node of the network is a high-capacity software-defined network controller.
The local software-defined network controller 21 on the network near-end node 2 is configured with management parameters of the software-defined network equipment on the network near-end node 2; the management parameters of the software defined network device in this embodiment include, but are not limited to, at least one of configuration information, device capability information, link information, and topology information. And after the local software-defined network controller 21 on the network near-end node 2 powers on the network near-end node, that is, in the operation process of the network near-end node, when detecting that the management parameters of the software-defined network device on the network near-end node are changed, the updated and changed management parameters are obtained.
The central software-defined network controller 12 is configured with management parameters of the software-defined network devices on the network near-end nodes 2. In this embodiment, the relevant management parameters can be directly sent to the central software-defined network controller 12 for configuration through communication with the core network through each software-defined network device on the network near-end node 2; the management parameters of each software-defined network device on the network near-end node can be directly sent to the central software-defined network controller of the network far-end node by directly utilizing the local software-defined network controller on the network near-end node.
In this embodiment, the management of the software-defined network device of the network near-end node 2 by the central software-defined network controller 12 and the local software-defined network controller 21 on the network near-end node 2 includes:
when the network near-end node is initially powered on, the network near-end node 2 does not establish a connection with the core network of the network far-end node, that is, does not establish a connection with the central software-defined network controller 12 of the network far-end node, and the local software-defined network controller 21 on the network near-end node 2 manages the software-defined network device of the network near-end node 2 in the process of powering on the network near-end node 2. In the process of powering on the network near-end node 2, the network service request (i.e., SDN network service request) of the related service software on the network near-end node may also be processed by the local software-defined network controller 21, that is, the local software-defined network controller 21 on the network near-end node may also be used to process the network server request of the related service software in the process of powering on the network near-end node 2. After the network near-end node is powered on and establishes connection with the central software-defined network controller 12 of the network far-end node, the local software-defined network controller 21 of the network near-end node 2 synchronizes the management parameters of the software-defined network device on the network near-end node 2 to the central software-defined network controller 12.
In the normal operation process of the network near-end node 2, when the message at the network near-end node 2 side needs to be forwarded by the software-defined network controller, the local software-defined network controller 21 on the network near-end node 2 preferentially forwards the message; that is, when the message at the network near-end node 2 side needs to be forwarded by the software-defined network controller, the forwarding policy that the local software-defined network controller 21 on the network near-end node 2 is preferentially adopted for forwarding is adopted, and when the local software-defined network controller 21 fails to forward the message, the central software-defined network controller 12 of the network far-end node is adopted to forward the message. This may improve forwarding efficiency.
In the normal running process of the network near-end node 2, when the service software running locally at the network near-end node 2 side has a network service request, the local software on the network near-end node 2 is preferably adopted to define the network controller 21 to process the network service request; when the local software-defined network controller 21 fails to process the network service request, the central software-defined network controller 12 of the remote node of the network is used to process the network service request. In this embodiment, the local software-defined network at the near-end node 2 side of the wireless network only manages the software-defined network devices on the near-end node 2 of the local network, and does not manage the software-defined network devices on the near-end nodes 2 of other networks.
In the normal operation process of the network near-end node 2, when the software-defined network devices on the plurality of network near-end nodes 2 need to be configured simultaneously, the central software-defined network controller 12 issues the configuration information of the software-defined network devices, which need to be issued to the plurality of network near-end nodes 2 from the core network, to the plurality of network near-end nodes 2, so as to implement the unified management of the plurality of network near-end nodes 2.
In the normal operation process of the network near-end node 2, when the network near-end node 2 is disconnected from the central software-defined network controller 12 due to problems such as transmission and the like, the local software-defined network controller 21 on the network near-end node 2 manages the software-defined network equipment on the network near-end node 2; when the network near-end node 2 is reconnected with the central software-defined network controller 12, the management parameters of the software-defined network equipment on the network near-end node 2 are synchronized to the central software-defined network controller 12 again; so that the central software-defined network controller 12 can effect control of the software-defined network devices on the network near-end node 2.
An example of an application in which a network far-end node is a wireless operator room and a network near-end node is a wireless base station is described below.
It is assumed that 100 wireless base stations are deployed in each area according to the number of wireless users and coverage requirements, and a core network device is placed in a wireless operator room in the area. When the software-defined network controller is deployed, a local software-defined network controller is deployed at each wireless base station side, and a large software-defined network controller, namely a central software-defined network controller, is deployed at a wireless operator room in the region.
The base station equipment of the set point A starts to be powered on, at the initial stage of power-on, the base station equipment runs a software version, the external message and the internal message of the base station need to be isolated, different VLAN (Virtual Local Area Network) identifiers need to be added to the external Network and the internal and external messages, and the requirement is realized by sending a flow table to Local software-defined Network equipment through a Local software-defined Network controller. After the electrification is finished, the base station equipment establishes network connection with the machine room, and the central software-defined network controller at the machine room side manages the software-defined network equipment of the base station at the site A.
In the normal operation process of each base station, when the traffic bandwidth configuration needs to be carried out on the external network ports of all the wireless base stations in the area, the requirement is realized by uniformly issuing a bandwidth configuration rule to the software-defined network equipment on all the wireless base stations in the area through the central software-defined network controller on the machine room side.
If the base station equipment of the site B is disconnected from the network of the machine room, namely, the base station equipment is disconnected from the central software-defined network controller, the local software-defined network controller of the base station side manages the local software-defined network equipment, and when the network of the machine room is recovered, the local software-defined network controller of the base station side synchronizes the local software-defined network management parameters to the remote central software-defined network controller again, and the remote central software-defined network controller newly manages the software-defined network equipment of the site B base station side.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (16)
1. A method for software-defined network management, comprising:
arranging a central software-defined network controller at a far-end node of a network, and arranging a local software-defined network controller at a near-end node of the network;
the central software-defined network controller and the local software-defined network controller jointly manage the software-defined network equipment of the network near-end node;
wherein the arranging a central software defined network controller at a network remote node comprises: after the network near-end node is powered on and connected with the central software-defined network controller, the local software-defined network controller on the network near-end node sends the management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller;
and in the normal operation process of the network near-end node, the local software-defined network controller of the network near-end node sends the changed management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller.
2. The method of software defined network management as claimed in claim 1 wherein the disposing of the local software defined network controller at the network near end node comprises: the management parameters of the software defined network device of the network near-end node are configured to a local software defined network controller of the network near-end node.
3. The method of software-defined network management as claimed in claim 2, further comprising, after the local software-defined network controller is disposed at the network near-end node:
after the network near-end node is powered on, the local software-defined network controller of the network near-end node acquires the changed management parameters when detecting that the management parameters of the software-defined network equipment of the network near-end node are changed.
4. The method of software-defined network management as claimed in claim 2, wherein the disposing of the central software-defined network controller at the network remote node comprises: configuring management parameters of software defined network devices of a network near-end node onto the central software defined network controller.
5. The method of software-defined network management as claimed in claim 4 wherein configuring management parameters of software-defined network devices of network near-end nodes onto the central software-defined network controller comprises:
and sending the management parameters of the software-defined network equipment of the network near-end node to the central software-defined network controller through the local software-defined network controller of the network near-end node.
6. The method for software-defined network management as claimed in any one of claims 1-5, wherein the managing of the software-defined network device of the network near-end node by the central software-defined network controller and the local software-defined network controller in combination comprises:
and the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node in the power-on process of the network near-end node.
7. The method for software-defined network management as claimed in any one of claims 1-5, wherein the managing of the software-defined network device of the network near-end node by the central software-defined network controller and the local software-defined network controller in combination comprises: and the local software-defined network controller of the network near-end node processes the software-defined network service request sent by the software-defined network equipment at the network near-end node side in the process of powering on the network near-end node or in the process of normally operating the network near-end node.
8. The method for software-defined network management as claimed in any one of claims 1-5, wherein the managing of the software-defined network device of the network near-end node by the central software-defined network controller and the local software-defined network controller in combination comprises:
when the message at the side of the network near-end node needs to be forwarded by the software-defined network controller, the local software-defined network controller of the network near-end node preferentially forwards the message;
and the central software-defined network controller forwards the message when the local software-defined network controller fails to forward the message.
9. The method for software-defined network management as claimed in any one of claims 1-5, wherein the managing of the software-defined network device of the network near-end node by the central software-defined network controller and the local software-defined network controller in combination comprises:
the local software-defined network controller on the network near-end node manages the software-defined network equipment on the network near-end node when the network near-end node is disconnected from the central software-defined network controller; and synchronizing management parameters of the software-defined network equipment on the network near-end node to the central software-defined network controller when the network near-end node is reconnected with the central software-defined network controller.
10. The method for software-defined network management as claimed in any one of claims 1-5, wherein the managing of the software-defined network device of the network near-end node by the central software-defined network controller and the local software-defined network controller in combination comprises:
and the central software-defined network controller issues the configuration information of the software-defined network equipment which needs to be issued to the plurality of network near-end nodes.
11. A wireless communication system, comprising: a central software-defined network controller disposed at a network remote node and a local software-defined network controller disposed at a network near-end node; the central software-defined network controller and the local software-defined network controller of the network near-end node are used for jointly managing the software-defined network equipment of the network near-end node;
after the network near-end node is powered on and is connected with a central software-defined network controller of a network far-end node, a local software-defined network controller of the network near-end node synchronizes management parameters of software-defined network equipment on the network near-end node to the central software-defined network controller;
and the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node in the power-on process of the network near-end node.
12. The wireless communication system of claim 11, wherein the local software-defined network controller of the network near-end node is configured with management parameters of software-defined network devices on the network near-end node; and the central software-defined network controller is configured with management parameters of software-defined network equipment on each network near-end node.
13. The wireless communication system of claim 11 or 12, wherein the central software-defined network controller and the local software-defined network controller of the network near-end node for jointly managing the software-defined network devices of the network near-end node comprises: and the local software-defined network controller of the network near-end node processes the software-defined network service request sent by the software-defined network equipment at the network near-end node side in the process of powering on the network near-end node or in the process of normally operating the network near-end node.
14. The wireless communication system of claim 11 or 12, wherein the central software-defined network controller and the local software-defined network controller jointly managing software-defined network devices on the network near-end node comprises:
when the message at the side of the network near-end node needs to be forwarded by the software-defined network controller, the local software-defined network controller of the network near-end node preferentially forwards the message;
and the central software-defined network controller forwards the message when the local software-defined network controller fails to forward the message.
15. The wireless communication system of claim 11 or 12, wherein the central software-defined network controller and the local software-defined network controller jointly managing software-defined network devices on the network near-end node comprises:
when the network near-end node is disconnected from the central software-defined network controller, the local software-defined network controller of the network near-end node manages the software-defined network equipment of the network near-end node; and synchronizing management parameters of the software-defined network device of the network near-end node to the central software-defined network controller when the network near-end node is reconnected with the central software-defined network controller.
16. The wireless communication system of claim 11 or 12, wherein the central software-defined network controller and the local software-defined network controller jointly managing software-defined network devices on the network near-end node comprises:
and the central software-defined network controller issues the configuration information of the software-defined network equipment which needs to be issued to the plurality of network near-end nodes.
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