CN103746886B - A kind of FiWi nodes and a kind of FiWi combination networks method - Google Patents
A kind of FiWi nodes and a kind of FiWi combination networks method Download PDFInfo
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Abstract
The invention discloses a kind of FiWi nodes and a kind of FiWi combination networks method, wherein, the FiWi nodes include forwarding module and physical interface；The FiWi nodes are communicated using multiple physical interfaces；The forwarding module is safeguarded multiple virtual interfaces, and the virtual interface has mapping relations with physical interface；The forwarding module, for being the data flow selection virtual interface into the FiWi nodes based on flow table, and the data flow is forwarded by the physical interface that the virtual interface maps.The present invention can cause that FiWi combination networks do not rely on specific access way using network virtualization, realize the global control of network.
Description
Technical field
The present invention relates to network communication field, more particularly to a kind of FiWi nodes and a kind of FiWi combination networks method.
Background technology
In order to meet user to network high bandwidth, seamless coverage, flexible access demand, light with it is wireless（FiWi, Fiber-
Wireless）UNE arises at the historic moment.FiWi networks are the networking plans that soft exchange is merged with wireless access way, its collection
Closed the advantage of optical fiber connecting method and wireless access way, with anti-electromagnetic interference capability it is strong, sufficiently large band can be provided
It is wide, the advantages of the bit error rate is relatively low.
But, FiWi access networks of the prior art are mainly the side in physical layer or MAC layer by mixed networking
Formula combines soft exchange and wireless access way, due to depending on the ins and outs of soft exchange, wireless access way, this
The FiWi access network technologies of sample are complicated, and device category is various, be difficult to unify, and maintenance management difficulty is big during for the network operation.
The content of the invention
The invention provides a kind of FiWi nodes and a kind of FiWi combination networks method so that FiWi networkings do not rely on tool
The access way of body, realizes the global control of network.
The present invention provides a kind of FiWi nodes, and the FiWi nodes include forwarding module and physical interface；Wherein：
The FiWi nodes are communicated using multiple physical interfaces；
The forwarding module is safeguarded multiple virtual interfaces, and the virtual interface has mapping relations with physical interface；
The forwarding module, for being the data flow selection virtual interface into the FiWi nodes based on flow table, and will
The data flow is forwarded by the physical interface that the virtual interface maps.
Preferably, the physical interface includes wave point and optical fiber interface；Wherein：The optical fiber interface is the FiWi
The physical interface that node is communicated with optical line terminal；The wave point be the FiWi nodes and wireless user terminal with
And the physical interface that other FiWi nodes are communicated；
Accordingly, the multiple virtual interface be at least one optical fiber virtual interface and at least one wireless dummy interface,
Described each optical fiber interface and at least one optical fiber virtual interface have mapping relations, described each wave point and at least one
Wireless dummy interface has mapping relations.
Preferably, the virtual interface corresponds to flow table item and can carry data flow；The forwarding module, for by institute
State data flow to be matched with flow table item to select virtual interface, and the data flow is reflected by the virtual interface of the selection
The physical interface penetrated is forwarded.
Preferably, the forwarding module includes flow table；The flow table item of the flow table, including virtual interface information.
Preferably, the FiWi nodes are further included：Storage pool, for being flowed into the data for entering the FiWi nodes
Row caching.
Preferably, the virtual interface also include at least one storage virtual interface, the storage virtual interface with it is described
There are mapping relations between storage pool.
Preferably, the FiWi nodes further include escape way, lead between the FiWi nodes and peripheral control unit
The escape way is crossed to be communicated.
The present invention also provides a kind of FiWi combination network methods based on above-described FiWi nodes, methods described bag
Include：
User terminal is linked on the FiWi nodes, and the FiWi nodes are connected to form physics with optical line terminal respectively
Network, and be connected with controller, described each FiWi node configures its virtual interface according to physical interface；
The controller builds virtual net view and carries out Topology Discovery and to virtual interface and thing according to physical network
Reason interface carries out flow monitoring, forms the global view of FiWi networks；
The controller generates flow table, by flow table issuance according to the global view of the FiWi networks using routing algorithm
To corresponding FiWi nodes.
Preferably, the multiple FiWi nodes, are connected by optical branching device with the optical line terminal, by optical link end
End is connected with the core net.
Preferably, the controller builds virtual net view according to physical network, including：Controller utilizes network virtual
Change and FiWi nodes and remaining network equipment are abstracted into dummy node, and in the virtual section that can be communicated by virtual interface
Virtual link is set up between point.
The beneficial effect of the embodiment of the present invention is：Virtual interface is configured by FiWi nodes, when being safeguarded to network not
The ins and outs of physical interface are need to rely on, maintenance difficulties are reduced；Using the virtual interface transmitting data flow of FiWi nodes,
So that mutually wireless bridging can communicate between the two, so as to realize being in communication with each other between FiWi nodes；Controller is to FiWi
The physical network that the network equipments such as node are formed carries out the global view of abstract formation FiWi UNEs using network virtualization,
So as to realize that controller adjusts control to the concentration of global view.
Brief description of the drawings
Fig. 1 is a kind of first structure figure of FiWi nodes of one embodiment of the invention；
Fig. 2 is a kind of the second structure chart of FiWi nodes of one embodiment of the invention；
Fig. 3 is a kind of the 3rd structure chart of FiWi nodes of one embodiment of the invention；
Fig. 4 is a kind of flow chart of FiWi combination networks method of one embodiment of the invention；
Fig. 5 is the schematic diagram of the FiWi networks obtained using a kind of FiWi combination networks method of one embodiment of the invention；
Fig. 6 is the first access scene of the communication means based on FiWi networks as shown in Figure 5；
Fig. 7 is the second access scene of the communication means based on FiWi networks as shown in Figure 5；
Fig. 8 is the 3rd access scene of the communication means based on FiWi networks as shown in Figure 5；
Fig. 9 is the 4th access scene of the communication means based on FiWi networks as shown in Figure 5；
Figure 10 is the 5th access scene of the communication means based on FiWi networks as shown in Figure 5.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of first structure figure of FiWi nodes of one embodiment of the invention.As shown in figure 1, the FiWi nodes
100 include forwarding module 110 and physical interface 120.Wherein：
The FiWi nodes 100 are communicated using multiple physical interfaces 120.
The forwarding module 110 safeguard have multiple virtual interfaces 130, only shown in Fig. 14 virtual interface v1, v2, v3,
V4, the virtual interface 130 has mapping relations with physical interface 120.The skill of physical layer is shielded by configuring virtual interface
Art details, is not need to rely on the ins and outs of physical interface when being safeguarded to network, reduce maintenance difficulties.
The forwarding module 110, for being the data flow selection virtual interface into the FiWi nodes 100 based on flow table
130, and the data flow is forwarded by the physical interface 120 that the virtual interface 130 maps.
In one embodiment of the invention, as shown in Fig. 2 the physical interface 120 includes wave point 121 and optical fiber
Interface 122.Wherein：The optical fiber interface 122 is the FiWi nodes 100 and optical line terminal (Optical Line
Terminal, OLT) physical interface that is communicated；The wave point 121 is the FiWi nodes 100 and wireless user's end
The physical interface that end and other FiWi nodes are communicated.Accordingly, the multiple virtual interface 130 is at least one wireless
The optical fiber virtual interface 132 of virtual interface 131 and at least one, described each optical fiber interface 122 virtually connects with least one optical fiber
Mouth 132 has mapping relations, and described each wireless dummy interface 131 of wave point 121 and at least one has mapping relations.Its
In, different optical fiber virtual interfaces 132 may map on same optical fiber interface 122, and different wireless dummy interface 131 can be with
It is mapped on same wave point 121, Fig. 2 illustrate only optical fiber virtual interface 132 and wireless dummy interface 131 is respectively
Mapping relations at two.
Preferably, the physical interface 120 can include one or more wave points 121, and the wave point 121 can
To be the wave point accessed using the WiFi or bluetooth in WLAN, can possess the AP nodal functions of WLAN, or
The function or Mesh gateway nodes (MPP) function of person Mesh nodes (MP) function or Mesh access nodes (MAP)；Can also
It is the base station functions that access service is provided in GSM for mobile terminal；The physical interface 120 can include one
Or multiple optical fiber interfaces 122, the optical fiber interface 122 can possess ethernet passive optical network EPON or Gigabit Passive Optical Network
The optical node ONU functions of GPON, or the optical interface function of other optical-fiber networks；When the physical interface 120 includes multiple
During optical fiber interface 122, each optical fiber interface 122 may be coupled to different networks, such as core net or other LANs.
In one embodiment of the invention, the virtual interface 130 corresponds to flow table item and can carry data flow.Institute
Forwarding module 110 is stated, for being matched the data flow with flow table item to select virtual interface, and the data is circulated
The physical interface 120 for crossing the mapping of selected virtual interface 130 is forwarded, and in the present embodiment, sets up virtual in flow table item
The information of interface so that can obtain virtual interface in the flow table item of acquisition and data stream matches.
Preferably, the FiWi nodes in FiWi UNEs according to the matching result of data flow and flow table item by the void
Intend the transmitting data flow of interface 130, preferably wireless forwarding, if next-hop is a FiWi node, the FiWi of next-hop is saved
Point receives data flow by virtual interface 130, then data flow is matched with flow table item, by void if the flow table item for having matching
Intend interface 130 to be forwarded data flow, otherwise abandon data flow, therefore, can be carried out between multiple FiWi nodes wireless
Bridge joint, can be in communication with each other between two FiWi nodes.Data flow based on virtual interface into can be carried out after FiWi nodes
Forwarding, can solve the problems, such as radio communication between any two FiWi nodes, it is not necessary to necessarily be formed nothing between FiWi nodes
Line mesh network（WMN）.
Further, FiWi nodes 100 and remaining network equipment can be abstracted into void by controller using network virtualization
Intend node, obtain virtual interface 130 by physical interface 120 is abstract, and it is virtual what can be communicated by virtual interface 130
Virtual link is set up between node；Similarly, controller is by physics such as the memory space of physical network, equipment CPU, link capacities
Resource Abstract is into virtual resource.Therefore, the virtual net view that controller can be built by dummy node and virtual link enters
Row Topology Discovery.
In one embodiment of the invention, the forwarding module 110 includes flow table 111.Wherein, the flow table 111 is
Forwarding module 110 is issued to by peripheral control unit, the flow table item that there are multiple information including virtual interface in flow table 111.
More specifically a kind of implementation method, flow table item includes matching domain and to data stream process the instruction of operation, described to data
The instruction that stream process operation includes the information of virtual interface.Forwarding module 110 is according to the flow table item of flow table 111 and enters institute
The matching result of the data flow of FiWi nodes 100 is stated, it is determined that the data flow into the FiWi nodes 100 corresponding virtually connects
Mouthful.
In one embodiment of the invention, the FiWi nodes 100 further include storage pool 140, for entering
The data flow of the FiWi nodes 100 is cached.Accordingly, the virtual interface 130 also includes that at least one storage is virtual
Interface 133, has mapping relations between the storage virtual interface 133 and the storage pool 140.When entrance FiWi nodes 100
Data flow need caching when, or forwarding module 110 need from the read data packet of storage pool 140 forwarded when, pass through
Storage mapping relations of the virtual interface 133 with I/O mouthfuls of storage pool 140 are read out or store.When data flow is saved into FiWi
During point 100, write by storing virtual interface 133 while forwarding module 110 can be forwarded data flow by virtual interface
Storage pool 140.
In one embodiment of the invention, the FiWi nodes 100 further include escape way 150, the FiWi
Communicated by the escape way 150 between node 100 and peripheral control unit, wherein, the escape way 150 is outside
The logical channel of controller and FiWi nodes 100, can use specific protocol between the peripheral control unit and FiWi nodes 100
Carry out such as peripheral control unit and issue flow table 111 and the communication of various control commands to FiWi nodes 100.
Fig. 3 is a kind of the 3rd structure chart of FiWi nodes of one embodiment of the invention.Below with reference to Fig. 3, it is discussed in detail
The workflow of each part of FiWi nodes：
In the present embodiment, be abstracted into virtually for FiWi nodes and remaining network equipment using network virtualization by peripheral control unit
Node, obtains virtual interface by physical interface is abstract, and built between the dummy node that can be communicated by virtual interface
Vertical virtual link；Similarly, be abstracted into for the physical resources such as the memory space of physical network, equipment CPU, link capacity by controller
Virtual resource.Therefore, the virtual net view that controller can be built by dummy node and virtual link carries out Topology Discovery
And flow monitoring is carried out to virtual interface and physical interface, and the global view of FiWi networks is formed, generated using routing algorithm
Flow table（Each flow table item is additionally arranged virtual interface）, flow table is sent by escape way to the forwarding module of FiWi nodes.When having
When data flow enters into FiWi nodes 100 by wave point 121 or optical fiber interface 122, forwarding module 110 is according to flow table
111 content, selects corresponding virtual interface 130, and the data are flowed through into the wave point that the virtual interface 130 maps
121 or optical fiber interface 122 forwarded, wherein, virtual interface 130 include wireless dummy interface 131, optical fiber virtual interface
132 and storage virtual interface 133.In addition, if needing that the data flow is needed to cache, then virtually connect according to storage
Mapping relations of the mouth 133 with I/O mouthfuls of storage pool 140, by the data flow cache in the storage pool 140, then forward mould
Block 110 is forwarded again after first can reading the data flow from the storage pool 140.
Fig. 4 is a kind of flow chart of FiWi combination networks method of one embodiment of the invention.As shown in figure 4, methods described
Including：
S410, user terminal are linked on the FiWi nodes, and the FiWi nodes are connected shape with optical line terminal respectively
Into physical network, and it is connected with controller, described each FiWi node configures its virtual interface according to physical interface.
It is preferred that the physical infrastructure such as FiWi nodes, optical branching device, OLT, optical fiber link, Radio Link is that FiWi melts
The physical resource of network is closed, composition physical network is connected with each other.The multiple virtual interfaces of each FiWi node configuration, each physics connects
Mouth has mapping relations with least one virtual interface.
S420, the controller build virtual net view and carry out Topology Discovery and to virtual interface according to physical network
Flow monitoring is carried out with physical interface, the global view of FiWi UNEs is formed.Wherein, controller builds according to physical network
Virtual net view carries out Topology Discovery, specifically includes：Controller is set FiWi nodes and remaining network using network virtualization
It is standby to be abstracted into dummy node, and virtual link is set up between the dummy node that can be communicated by virtual interface, therefore,
The virtual net view that controller can be built by dummy node and virtual link carries out Topology Discovery.Similarly, controller
The physical resources such as the memory space of physical network, equipment CPU, link capacity are abstracted into virtual resource.In the present embodiment, by thing
The infrastructure for managing network can obtain the virtual resources such as bandwidth, capacity, memory space with abstract, and controller is by these virtual resources
Data are abstracted into, are gathered together with virtual interface, be uniformly controlled and allocated.
Controller carries out flow monitoring to virtual interface and physical interface, specifically includes：Controller control FiWi nodes are determined
Report to phase the flow of its virtual interface and physical interface.
S430, the controller generate flow table, by flow table according to the global view of the FiWi networks using routing algorithm
It is handed down to corresponding FiWi nodes.
Specifically, controller forms whole FiWi network flows by flow monitoring, the Topology Discovery to whole FiWi networks
The global view of amount, topological structure, link-quality, nodal information etc. such that it is able to which concentration control is carried out to all of FiWi nodes
System.Controller can be found that the mulitpath from source address to destination address, and generates flow table according to routing algorithm, is saved to FiWi
Point issues flow table（Each flow table item is additionally arranged virtual interface）.
The present embodiment carries out concentrating adjustment control by controller to the data flow on FiWi nodes, can reach load equal
The purpose of weighing apparatus.
Controller is communicated by escape way with FiWi nodes, can be configured, be managed FiWi nodes, controller with
Escape way between FiWi nodes is logical channel.
Fig. 5 is the schematic diagram of the FiWi networks obtained using a kind of FiWi combination networks method of one embodiment of the invention.
Due to that directly can be communicated by wireless bridging between two FiWi nodes, for example, FiWi nodes 3 and FiWi among Fig. 5
Node 4, directly can be communicated without carrying out data exchange by core net, for example, FiWi nodes 3 by wireless bridging
Negotiated channel bandwidth, ESSID and other transmitting-receiving parameters first between FiWi nodes 4, then packet is from FiWi nodes 3
Physical interface is sent to FiWi nodes 4, and FiWi nodes 4 process the packet further according to the flow table that controller is issued.So two
User data package between FiWi nodes need to can only be communicated by the data exchange between two FiWi nodes, compared to
Need to be swapped by core net the traditional mode for the treatment of, can be substantially reduced on the uplink and downlink link between core net
Flow, mitigate core network load, reduce data packet transmission delay, improve network throughput.Equally, when two user terminals are needed
When being communicated, if in traditional EPON, data flow needs logical through wired Optical Fiber Transmission from active user's terminal
ONU to OLT is crossed, treatment is swapped into core net by OLT, be then transferred to up to target terminal user by OLT, ONU again.
But under the scheme of the present invention, the data flow of active user need to be only transferred to up to FiWi nodes, FiWi by wired or wireless
Node selects the FiWi nodes of next-hop according to the information of flow table, due to that can carry out wireless bridge connection between two FiWi nodes
Letter, data flow reaches next-hop FiWi nodes from current FiWi nodes by wireless bridging, then by optical fiber or is wirelessly transmitted to
Up to target terminal user.Wherein, the FiWi nodes that uplink and downlink data flow is passed through can in same EPON,
Can also be in different EPONs.The communication between two users under new networking plan in tradition obviously than accessing
Communication performance in net is good, and propagation delay time is short, mitigates core network load, also can effectively reduce bit error rate etc..For example, Fig. 5 it
In user terminal 3 and user terminal 4, can directly by the wireless bridging of FiWi nodes 3 and FiWi nodes 4 communicated without
Need to carry out data exchange by core net.
In one embodiment of the invention, the multiple FiWi nodes are connected by optical line terminal with core net, institute
Multiple FiWi nodes are stated to be connected with the optical line terminal by optical branching device；The schematic diagram of the networking of the FiWi networks is as schemed
Shown in 5.
Fig. 6 is the first access scene of the communication means based on FiWi networks as shown in Figure 5.Access shown in Fig. 6
Scape is that two users are connected respectively to two FiWi nodes, and two FiWi nodes are connected on an OLT, and OLT is connected to core
Net, eliminates the controller being connected on FiWi nodes in figure, FiWi nodes illustrate only wave point and optical fiber interface and save
Remaining module such as forwarding module is omited.Access way in Fig. 6 is direct communication mode between user of access network.When two users do not exist
When in the range of same FiWi nodes access, the access way can be selected to be communicated.Controller is first to two FiWi nodes
Issue flow table.The wireless access FiWi nodes 1 of user 1, packet carries out flow table matching in FiWi nodes 1, according to stream entry
With result, the packet of user 1 is forwarded to FiWi nodes 2 by FiWi nodes 1 by virtual interface and wave point, completes two
Wireless bridging between individual FiWi nodes.Packet carries out flow table matching again in FiWi nodes 2, then the forwarding of FiWi nodes 2
Module delivers a packet to user 2 according to matching result.Performance compared to traditional access way will get well, such as network delay
It is short, mitigate offered load of core net etc..
Fig. 7 is the second access scene of the communication means based on FiWi networks as shown in Figure 5.Access shown in Fig. 7
Scape is that two users are connected respectively to two FiWi nodes, and two FiWi nodes are connected respectively on two OLT, and two OLT connect
Core net is connected to, the controller being connected on FiWi nodes is eliminated in figure, FiWi nodes illustrate only wave point and optical fiber
Interface and eliminate remaining module such as forwarding module.Access way in Fig. 7 is direct communication mode between user of access network.When two
When individual user is in different OLT links, this kind of access way can be selected.Specific communication process is similar with Fig. 6.
Fig. 8 is the 3rd access scene of the communication means based on FiWi networks as shown in Figure 5.Access shown in Fig. 8
Scape is a user, and two FiWi nodes, user is connected to one of FiWi nodes, and we are set to FiWi nodes 1, two
FiWi nodes are connected on an OLT, and OLT is connected to core net, and the controller being connected on FiWi nodes is eliminated in figure,
FiWi nodes illustrate only wave point and optical fiber interface and eliminate remaining module such as forwarding module.Access way in Fig. 8
It is bridging access way, when user accesses FiWi nodes 1 by traditional access way to be communicated with core net, if FiWi
There is congestion or disconnection to the communication link of core net in node 1, at this moment selects the single-hop bridging access way in upper figure.Control first
Device processed issues flow table to FiWi nodes, and user radio accesses FiWi nodes 1, and packet reaches FiWi nodes 1, and packet is flowed
Table is matched, if the destination address of packet is core net, and FiWi nodes 1 arrive the communication link congestion of core net, FiWi sections
Link circuit condition is sent to controller by point 1, and controller configures new flow table issuance to FiWi by global view and traffic monitoring
Node 1,（We assume that in the range of the access of FiWi nodes 1 and under the good conduct of communication link state of controller selection
The FiWi nodes of one hop node are FiWi nodes 2）, then FiWi nodes 1 and FiWi nodes 2 carry out wireless bridge by virtual interface
Connect, the packet of user to core net is transmitted to FiWi nodes 2 by FiWi nodes 1.FiWi nodes 2 can also receive controller and issue
The new flow table on the user data package, when FiWi nodes 2 receive the packet of user, by packet in the node
Head is matched with stream entry, and data then are forwarded a packet into core net according to flow table matching result.Single-hop bridging access way
Most suitable path is selected by the virtualization to whole FiWi access networks and global view in time, as traditional access way
Protection access, make the communication of user and core net has reliability and safety guarantee higher than traditional FiWi access networks.
Fig. 9 is the 4th access scene of the communication means based on FiWi networks as shown in Figure 5.Access shown in Fig. 9
Scape is a user, and two FiWi nodes, user is connected to one of FiWi nodes, and we are set to FiWi nodes 1, two
FiWi nodes are connected respectively on two OLT, and two OLT are all connected to core net, are eliminated in figure and are connected on FiWi nodes
Controller, FiWi nodes illustrate only wave point and optical fiber interface and eliminate remaining module such as forwarding module.In Fig. 9
Access way is bridging access way, is that the protection of traditional access way is accessed.Accessed when user passes through traditional access way
When FiWi nodes 1 are communicated with core net, if there is congestion to the communication link of core net in the OLT of connection FiWi nodes 1
Or disconnect, then the single-hop bridging access way in upper figure is selected by controller.
Figure 10 is the 5th access scene of the communication means based on FiWi networks as shown in Figure 5.Access shown in Figure 10
Scene is a user, n FiWi nodes (n>2), user is connected to one of FiWi nodes, and we are set to FiWi nodes 1,
N FiWi node is all connected on an OLT, and this OLT is connected to core net, is eliminated in figure and is connected on FiWi nodes
Controller, FiWi nodes illustrate only wave point and optical fiber interface and eliminate remaining module such as forwarding module.In Figure 10
Access way is multi-hop bridging access way.When user is accessed with core network communications by tradition, communication link congestion or disconnected
Open, then select single-hop bridging access way, if the FiWi nodes 2 of next-hop are also at congestion shape with the communication link of core net
State, then flow table is updated by controller, wireless bridging accesses next FiWi nodes, if the preceding n-1 for accessing that puts up a bridge jumps FiWi sections
Point is with the communication link of core net all in congestion state, then just wireless bridging accesses n-th FiWi node, until can be successful
Communicated with core net.Specific access procedure is the circulation of single-hop bridging access procedure.
Below by way of the mode of false code, the access scene as shown in Fig. 6 to Figure 10 is exemplarily illustrated.
Exemplarily, the wave point that definition user data package enters FiWi nodes 1 is virtual interface 1 (vport1),
FiWi nodes 1 are virtual interface 2 (vport2) with the wave point of FiWi nodes 2, and the light that FiWi nodes 1 are connected with core net connects
Mouth is virtual interface 3 (vport3), and the wave point between FiWi nodes 2 and FiWi nodes 1 is virtual interface 4 (vport4),
Wave point between FiWi nodes 2 and user is virtual interface 5 (vport5), and the light that FiWi nodes 2 are connected with core net connects
Mouth is virtual interface 6 (vport6).
In the case where user is to core net forwarding data, packet enters FiWi nodes 1 by flow table by virtual interface 1
After matching core net, packet inbound port correspondence virtual interface 1, exit port correspondence virtual interface 3 are forwarded to from virtual interface 3.
False code is：
In the case of as shown in Figure 6 and Figure 7, i.e., between two users of access FiWi networks in the case of direct communication,
Packet is by virtual interface 1 into FiWi nodes 1 by being forwarded to the virtual of FiWi nodes 2 from virtual interface 2 after flow table matching
Interface 4, then by being transmitted to user 2 from virtual interface 5 after flow table matching.
False code is：
In the case of as shown in Figure 8 and Figure 9, i.e., user with put up a bridge access way core network access when, packet is by void
Intend interface 1 and the virtual interface 4 of FiWi nodes 2 is forwarded to from virtual interface 2 after flow table is matched into FiWi nodes 1, then pass through
After crossing flow table matching core net is forwarded to from virtual interface 6.
False code is：
Under as in the case illustrated in figure 10, i.e., user with put up a bridge access way core network access when, packet is by virtually connecing
Mouth 1 is forwarded to the virtual interface 4 of FiWi nodes 2 into FiWi nodes 1 after flow table is matched from virtual interface 2, by flow table
Be forwarded to FiWi nodes 3 from virtual interface 5 after matching, by that analogy, by after n FiWi node by FiWi nodes n from void
Intend interface 3n core network access.
False code is：
The beneficial effect of the embodiment of the present invention is：Virtual interface is configured by FiWi nodes, when being safeguarded to network not
The ins and outs of physical interface are need to rely on, maintenance difficulties are reduced；Using the virtual interface transmitting data flow of FiWi nodes,
So that can be in communication with each other between the two, so as to realize that the mutual wireless bridging between FiWi nodes communicates；Controller is to FiWi
The physical network that the network equipments such as node are formed carries out the global view of abstract formation FiWi UNEs using network virtualization,
So as to realize that controller adjusts control to the concentration of global view.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of FiWi nodes, it is characterised in that the FiWi nodes include forwarding module and physical interface；
The FiWi nodes are communicated using multiple physical interfaces；
The forwarding module is safeguarded multiple virtual interfaces, and the virtual interface has mapping relations with physical interface；
The forwarding module, for being the data flow selection virtual interface into the FiWi nodes based on flow table, and will be described
Data flow is forwarded by the physical interface that the virtual interface maps；
The physical interface includes wave point and optical fiber interface；Wherein：
The optical fiber interface is the physical interface that the FiWi nodes are communicated with optical line terminal；The wave point is institute
State the physical interface that FiWi nodes are communicated with wireless user terminal and other FiWi nodes；
Accordingly, the multiple virtual interface be at least one optical fiber virtual interface and at least one wireless dummy interface, each
Optical fiber interface and at least one optical fiber virtual interface have mapping relations, each wave point and at least one wireless dummy interface
With mapping relations；When the physical interface includes multiple optical fiber interfaces, each optical fiber interface may be coupled to different networks；
FiWi nodes are further included：Storage pool, for being cached to the data flow for entering the FiWi nodes；It is described virtual
Interface also includes at least one storage virtual interface, has mapping relations between the storage virtual interface and the storage pool；
The virtual interface corresponds to flow table item and can carry data flow；
The forwarding module, for being matched the data flow with flow table item to select virtual interface, and by the data
The physical interface mapped by the virtual interface of the selection is flowed to be forwarded.
2. FiWi nodes as claimed in claim 1, it is characterised in that the forwarding module includes flow table；
The flow table item of the flow table, including virtual interface information.
3. FiWi nodes as claimed in claim 1, it is characterised in that the FiWi nodes further include escape way, institute
State and communicated by the escape way between FiWi nodes and peripheral control unit.
4. a kind of FiWi combination network methods of the FiWi nodes based on described in claim any one of 1-3, it is characterised in that institute
The method of stating includes：
User terminal is linked on the FiWi nodes, and the FiWi nodes are connected to form Physical Network with optical line terminal respectively
Network, and be connected with controller, described each FiWi node configures its virtual interface according to physical interface；
The controller carries out Topology Discovery and virtual interface and physics is connect according to physical network structure virtual net view
Mouth carries out flow monitoring, forms the global view of FiWi networks；
The controller generates flow table according to the global view of the FiWi networks using routing algorithm, by flow table issuance to right
The FiWi nodes answered.
5. FiWi combination networks method as claimed in claim 4, it is characterised in that
The multiple FiWi nodes, are connected by optical branching device with the optical line terminal, by optical line terminal and core net
It is connected.
6. FiWi combination networks method as claimed in claim 4, it is characterised in that the controller builds according to physical network
Virtual net view, including：
FiWi nodes and remaining network equipment are abstracted into dummy node by controller using network virtualization, and can be by void
Intend setting up virtual link between the dummy node that interface is communicated.
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| CN105406986B (en) * | 2015-10-23 | 2018-11-02 | 北京邮电大学 | A kind of content distribution control method and a kind of master controller |
| CN105407141B (en) * | 2015-10-23 | 2019-06-18 | 北京邮电大学 | A kind of content distribution method and system and a kind of FiWi node device |
| CN106131976A (en) * | 2016-07-08 | 2016-11-16 | 天津大世自动化科技有限公司 | A kind of bluetooth MESH New Algorithm |
| CN107612702A (en) * | 2016-07-12 | 2018-01-19 | 中兴通讯股份有限公司 | A kind of method for configuring routers and device |
| CN107453924A (en) * | 2017-09-15 | 2017-12-08 | 河北工程大学 | A kind of Multi-path route transmission method in software definition FiWi networks |
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