CN103746886A - FiWi node and FiWi fusion networking method - Google Patents
FiWi node and FiWi fusion networking method Download PDFInfo
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Abstract
The invention discloses a FiWi node and a FiWi fusion networking method. The FiWi node comprises a forwarding module and physical interfaces. The FiWi node utilizes the plurality of physical interfaces to carry out communication. The forwarding module is maintained with a plurality of virtual interfaces, wherein the virtual interfaces and the physical interfaces are in mapping relation. The forwarding module is used for selecting the virtual interface for data flow entering the FiWi node based on a flow table and forwards the data flow through the physical interface mapped with the virtual interface. By utilizing network virtualization, FiWi fusion networking is allowed to be independent of specific access ways, thereby realizing global control of a network.
Description
Technical field
The present invention relates to network communication field, particularly a kind of FiWi node and a kind of FiWi combination network method.
Background technology
In order to meet the demand of user to network high bandwidth, seamless coverage, flexible access, light and wireless (FiWi, Fiber-Wireless) UNE arise at the historic moment.FiWi network is the networking plan that light access and wireless access way are merged, the advantage that it has gathered optical fiber connecting method and wireless access way, have anti-electromagnetic interference capability strong, the advantages such as enough large bandwidth, the error rate is lower can be provided.
But, FiWi Access Network of the prior art is mainly that the mode by mixed networking is combined light access and wireless access way on physical layer or MAC layer, owing to depending on the ins and outs of light access, wireless access way, such FiWi access network technology is complicated, device category is various, be difficult to unified, and during for the network operation, maintenance management difficulty is large.
Summary of the invention
The invention provides a kind of FiWi node and a kind of FiWi combination network method, make FiWi networking not rely on concrete access way, realize the overall situation of network and control.
The invention provides a kind of FiWi node, described FiWi node comprises forwarding module and physical interface; Wherein:
Described FiWi node utilizes a plurality of physical interfaces to communicate;
Described forwarding module is safeguarded a plurality of virtual interfaces, and described virtual interface and physical interface have mapping relations;
Described forwarding module, for being that the data flow that enters described FiWi node is selected virtual interface based on stream table, and the physical interface that described data flow is shone upon by described virtual interface forwards.
Preferably, described physical interface comprises wave point and optical fiber interface; Wherein: described optical fiber interface is the physical interface that described FiWi node and optical line terminal communicate; Described wave point is the physical interface that described FiWi node and wireless user terminal and other FiWi node communicate;
Accordingly, described a plurality of virtual interface is 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, and described each wave point and at least one wireless dummy interface have mapping relations.
Preferably, described virtual interface also can carry data flow corresponding to stream list item; Described forwarding module, for described data flow is mated to select virtual interface with stream list item, and the physical interface by the virtual interface mapping of described selection forwards by described data flow.
Preferably, described forwarding module comprises stream table; The stream list item of described stream table, comprises the information of virtual interface.
Preferably, described FiWi node further comprises: storage pool, and for carrying out buffer memory to entering the data flow of described FiWi node.
Preferably, described virtual interface also comprises at least one storing virtual interface, between described storing virtual interface and described storage pool, has mapping relations.
Preferably, described FiWi node further comprises escape way, between described FiWi node and peripheral control unit, by described escape way, communicates.
The present invention also provides a kind of FiWi combination network method based on above-described FiWi node, and described method comprises:
User terminal is linked on described FiWi node, and described FiWi node is connected to form physical network with optical line terminal respectively, and is connected with controller, and described each FiWi node configures its virtual interface according to physical interface;
Described controller builds virtual net view according to physical network to carry out Topology Discovery and virtual interface and physical interface is carried out to flow monitoring, forms the global view of FiWi network;
Described controller, according to the global view of described FiWi network, uses routing algorithm to generate stream table, and stream table is handed down to corresponding FiWi node.
Preferably, described a plurality of FiWi nodes, are connected with described optical line terminal by optical branching device, by optical line terminal, are connected with described core net.
Preferably, described controller builds virtual net view according to physical network, comprise: controller utilizes network virtualization that FiWi node and all the other network equipments are abstracted into dummy node, and sets up virtual link between the dummy node that can communicate by virtual interface.
The beneficial effect of the embodiment of the present invention is: by FiWi node configuration virtual interface, do not need to depend on the ins and outs of physical interface when network is safeguarded, reduced maintenance difficulties; Utilize the virtual interface transmitting data flow of FiWi node, make between the two wireless bridging communication mutually, thereby realize the intercommunication mutually between FiWi node; The physical network that controller forms network equipments such as FiWi nodes utilizes network virtualization to carry out the global view of abstract formation FiWi UNE, thereby realize controller, the concentrated adjustment of global view is controlled.
Accompanying drawing explanation
Fig. 1 is the first structure chart of a kind of FiWi node of one embodiment of the invention;
Fig. 2 is the second structure chart of a kind of FiWi node of one embodiment of the invention;
Fig. 3 is the 3rd structure chart of a kind of FiWi node of one embodiment of the invention;
Fig. 4 is the flow chart of a kind of FiWi combination network method of one embodiment of the invention;
The schematic diagram of the FiWi network that a kind of FiWi combination network method that Fig. 5 is use one embodiment of the invention obtains;
Fig. 6 is the first access scene of the communication means of the FiWi network based on as shown in Figure 5;
Fig. 7 is the second access scene of the communication means of the FiWi network based on as shown in Figure 5;
Fig. 8 is the 3rd access scene of the communication means of the FiWi network based on as shown in Figure 5;
Fig. 9 is the 4th access scene of the communication means of the FiWi network based on as shown in Figure 5;
Figure 10 is the 5th access scene of the communication means of the FiWi network based on as shown in Figure 5.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 is the first structure chart of a kind of FiWi node of one embodiment of the invention.As shown in Figure 1, described FiWi node 100 comprises forwarding module 110 and physical interface 120.Wherein:
Described FiWi node 100 utilizes a plurality of physical interfaces 120 to communicate.
Described forwarding module 110 safeguards there are a plurality of virtual interfaces 130, and 4 virtual interface v1, v2, v3, v4 are only shown in Fig. 1, and described virtual interface 130 has mapping relations with physical interface 120.By configuration virtual interface, shield the ins and outs of physical layer, when network is safeguarded, do not needed to depend on the ins and outs of physical interface, reduced maintenance difficulties.
Described forwarding module 110, for being that the data flow that enters described FiWi node 100 is selected virtual interface 130 based on stream table, and the physical interface 120 by described virtual interface 130 mappings forwards by described data flow.
In one embodiment of the invention, as shown in Figure 2, described physical interface 120 comprises wave point 121 and optical fiber interface 122.Wherein: described optical fiber interface 122 is the physical interface that described FiWi node 100 and optical line terminal (Optical Line Terminal, OLT) communicate; The physical interface that described wave point 121 communicates for described FiWi node 100 and wireless user terminal and other FiWi node.Accordingly, described a plurality of virtual interface 130 is at least one wireless dummy interface 131 and at least one optical fiber virtual interface 132, described each optical fiber interface 122 has mapping relations with at least one optical fiber virtual interface 132, and described each wave point 121 has mapping relations with at least one wireless dummy interface 131.Wherein, different optical fiber virtual interfaces 132 can be mapped on same optical fiber interface 122, different wireless dummy interfaces 131 can be mapped on same wave point 121, mapping relations when Fig. 2 only shows optical fiber virtual interface 132 and wireless dummy interface 131 and is respectively two.
Preferably, described physical interface 120 can comprise one or more wave points 121, described wave point 121 can be to adopt WiFi in WLAN (wireless local area network) or the wave point of bluetooth access, the AP nodal function that can possess WLAN, or the function of Mesh node (MP) function or Mesh access node (MAP) or Mesh gateway node (MPP) function; Also can be that the base station functions of access service is provided for mobile terminal in mobile communication system; Described physical interface 120 can comprise one or more optical fiber interfaces 122, and described optical fiber interface 122 can possess the optical node ONU function of ethernet passive optical network EPON or Gigabit Passive Optical Network GPON, can be also the optical interface function of other optical-fiber networks; When described physical interface 120 comprises a plurality of optical fiber interface 122, each optical fiber interface 122 can be connected to different networks, as core net or other local area network (LAN) etc.
In one embodiment of the invention, described virtual interface 130 also can carry data flow corresponding to stream list item.Described forwarding module 110, for described data flow is mated to select virtual interface with stream list item, and the physical interface 120 by selected virtual interface 130 mappings forwards by described data flow, in the present embodiment, the information of setting up virtual interface in stream list item, makes can obtain virtual interface when obtaining the stream list item mating with data flow.
Preferably, FiWi node in FiWi UNE passes through described virtual interface 130 transmitting data flows according to data flow and the matching result of stream list item, it is preferably wireless forwarding, if down hop is a FiWi node, the FiWi node of down hop is by virtual interface 130 receiving data streams, again data flow is mated with stream list item, if there is the stream list item of coupling by virtual interface 130, data flow to be forwarded, otherwise data flow is abandoned, therefore, between a plurality of FiWi nodes, can carry out wireless bridging, between two FiWi nodes, can intercom mutually.Data flow can forward based on virtual interface after entering FiWi node, can solve the problem of radio communication between any two FiWi nodes, does not need must form wireless mesh network (WMN) between FiWi node.
Further, controller can utilize network virtualization that FiWi node 100 and all the other network equipments are abstracted into dummy node, by the abstract virtual interface 130 that obtains of physical interface 120, and set up virtual link between the dummy node that can communicate by virtual interface 130; Similarly, controller is abstracted into virtual resource by physical resources such as the memory space of physical network, equipment CPU, link capacities.Therefore the virtual net view that, controller can build by dummy node and virtual link carries out Topology Discovery.
In one embodiment of the invention, described forwarding module 110 comprises stream table 111.Wherein, described stream table 111 is issued to forwarding module 110 by peripheral control unit, has a plurality of stream list items that comprise the information of virtual interface in stream table 111.An execution mode more specifically, stream list item comprises matching domain and data stream processed to the instruction of operation, described data stream processed to the information that the instruction operating comprises virtual interface.Forwarding module 110 is according to the stream list item of stream table 111 and enter the matching result of the data flow of described FiWi node 100, determines virtual interface corresponding to data flow that enters described FiWi node 100.
In one embodiment of the invention, described FiWi node 100 further comprises storage pool 140, for carrying out buffer memory to entering the data flow of described FiWi node 100.Accordingly, described virtual interface 130 also comprises at least one storing virtual interface 133, between described storing virtual interface 133 and described storage pool 140, has mapping relations.When entering the data flow of FiWi node 100 while needing buffer memory, or forwarding module 110 is when need to forward from storage pool 140 read data packet, all by storing virtual interface 133 and the mapping relations of the I/O mouth of storage pool 140, is read or is stored.When data flow enters FiWi node 100, forwarding module 110 writes storage pool 140 by storing virtual interface 133 when data flow can be forwarded by virtual interface.
In one embodiment of the invention, described FiWi node 100 further comprises escape way 150, between described FiWi node 100 and peripheral control unit, by described escape way 150, communicate, wherein, described escape way 150 is the logical channel of peripheral control unit and FiWi node 100, can use specific protocol to carry out to FiWi node 100, issuing the communications such as stream table 111 and various control commands as peripheral control unit between described peripheral control unit and FiWi node 100.
Fig. 3 is the 3rd structure chart of a kind of FiWi node of one embodiment of the invention.Below with reference to Fig. 3, introduce in detail the workflow of each part of FiWi node:
In the present embodiment, peripheral control unit utilizes network virtualization that FiWi node and all the other network equipments are abstracted into dummy node, by the abstract virtual interface that obtains of physical interface, and sets up virtual link between the dummy node that can communicate by virtual interface; Similarly, controller is abstracted into virtual resource by physical resources such as the memory space of physical network, equipment CPU, link capacities.Therefore, the virtual net view that controller can build by dummy node and virtual link carries out Topology Discovery and virtual interface and physical interface is carried out to flow monitoring, form the global view of FiWi network, use routing algorithm to generate stream table (respectively flow list item and set up virtual interface), stream table is sent to the forwarding module of FiWi node by escape way.When having data flow to enter into FiWi node 100 by wave point 121 or optical fiber interface 122, forwarding module 110 is according to the content of stream table 111, select corresponding virtual interface 130, and wave point 121 or the optical fiber interface 122 through described virtual interface 130 mappings forwards by described data flow, wherein, virtual interface 130 comprises wireless dummy interface 131, optical fiber virtual interface 132 and storing virtual interface 133.In addition, if need to need to carry out buffer memory to described data flow, according to the mapping relations of the I/O mouth of storing virtual interface 133 and storage pool 140, by described data flow cache, in described storage pool 140, forwarding module 110 forwards after can first reading described data flow from described storage pool 140 again.
Fig. 4 is the flow chart of a kind of FiWi combination network method of one embodiment of the invention.As shown in Figure 4, described method comprises:
S410, user terminal are linked on described FiWi node, and described FiWi node is connected to form physical network with optical line terminal respectively, and is connected with controller, and described each FiWi node configures its virtual interface according to physical interface.
Preferably, the physical infrastructure such as FiWi node, optical branching device, OLT, optical fiber link, wireless link are the physical resources of FiWi UNE, interconnect composition physical network.Each FiWi node configures a plurality of virtual interfaces, and each physical interface and at least one virtual interface have mapping relations.
S420, described controller build virtual net view according to physical network to carry out Topology Discovery and virtual interface and physical interface is carried out to flow monitoring, forms the global view of FiWi UNE.Wherein, controller builds virtual net view according to physical network and carries out Topology Discovery, specifically comprise: controller utilizes network virtualization that FiWi node and all the other network equipments are abstracted into dummy node, and set up virtual link between the dummy node that can communicate by virtual interface, therefore the virtual net view that, controller can build by dummy node and virtual link carries out Topology Discovery.Similarly, controller is abstracted into virtual resource by physical resources such as the memory space of physical network, equipment CPU, link capacities.In the present embodiment, by the infrastructure of physical network, can abstractly obtain the virtual resources such as bandwidth, capacity, memory space, controller is abstracted into data by these virtual resources, is gathered together with virtual interface, unifies to control and allotment.
Controller carries out flow monitoring to virtual interface and physical interface, specifically comprises: controller is controlled the flow that FiWi node reports its virtual interface and physical interface termly.
S430, described controller, according to the global view of described FiWi network, use routing algorithm to generate stream table, and stream table is handed down to corresponding FiWi node.
Particularly, controller, by the flow monitoring of whole FiWi network, Topology Discovery, forms the global view of whole FiWi network traffics, topological structure, link-quality, nodal information etc., thereby can carry out centralized control to all FiWi nodes.Controller can be found the mulitpath from source address to destination address, and generates stream table according to routing algorithm, to FiWi node, issues stream table (respectively flow list item and set up virtual interface).
The present embodiment is concentrated to adjust to the data flow on FiWi node by controller and is controlled, and can reach the object of load balancing.
Controller communicates by escape way and FiWi node, can configure, manage FiWi node, and the escape way between controller and FiWi node is logical channel.
The schematic diagram of the FiWi network that a kind of FiWi combination network method that Fig. 5 is use one embodiment of the invention obtains.Owing to can directly being communicated by wireless bridging between two FiWi nodes, for example, FiWi node 3 among Fig. 5 and FiWi node 4, can directly by wireless bridging, be communicated and not need to carry out exchanges data through core net, for example, first negotiated channel bandwidth, ESSID and other transmitting-receiving parameters between FiWi node 3 and FiWi node 4, then packet sends to FiWi node 4 from the physical interface of FiWi node 3, this packet of stream list processing that FiWi node 4 issues according to controller again.So the user data package between two FiWi nodes only need can communicate by the exchanges data between two FiWi nodes, than exchanging the traditional mode of processing through core net, can significantly reduce and core net between uplink and downlink link on flow, alleviate core network load, reduce data packet transmission time delay, improve network throughput.Equally, when two user terminals need to communicate, if in traditional EPON, data flow need to be from active user's terminal through wired Optical Fiber Transmission by ONU to OLT, by OLT, enter core net and exchange processing, and then transmission arrives target terminal user through OLT, ONU.Yet under the solution of the present invention, active user's data flow only need arrive FiWi node by wired or wireless transmission, FiWi node is according to the FiWi node of the Information Selection down hop of stream table, owing to can carrying out wireless bridging communication between two FiWi nodes, data flow arrives down hop FiWi node from current FiWi node by wireless bridging, then arrives target terminal user through optical fiber or wireless transmission.Wherein, uplink and downlink data flow the FiWi node of process can be in same EPON, also can be at different EPONs.Communication between two users under new networking plan is obviously good than the communication performance in traditional Access Network, and propagation delay time is short, alleviates core network load, also can effectively reduce the error rate etc.For example, the user terminal 3 among Fig. 5 and user terminal 4, can be directly communicated and do not needed to carry out exchanges data through core net by the wireless bridging of FiWi node 3 and FiWi node 4.
In one embodiment of the invention, described a plurality of FiWi nodes are connected with core net by optical line terminal, and described a plurality of FiWi nodes are connected with described optical line terminal by optical branching device; The schematic diagram of the networking of described FiWi network as shown in Figure 5.
Fig. 6 is the first access scene of the communication means of the FiWi network based on as shown in Figure 5.Access scene shown in Fig. 6 is that two users are connected respectively to two FiWi nodes, two FiWi nodes are connected on an OLT, OLT is connected to core net, in figure, omitted the controller being connected on FiWi node, FiWi node only shows wave point and optical fiber interface and has omitted all the other modules such as forwarding module.Access way in Fig. 6 is direct communication mode between user of access network.When two users are not within the scope of the access of same FiWi node, can select this access way to communicate.First controller issues stream table to two FiWi nodes.User's 1 wireless access FiWi node 1, packet carries out stream table coupling in FiWi node 1, according to stream entries match result, FiWi node 1 will be forwarded to FiWi node 2 by virtual interface and wave point by user 1 packet, completes two internodal wireless bridgings of FiWi.Packet carries out stream table coupling in FiWi node 2 again, and then the forwarding module of FiWi node 2 arrives user 2 according to matching result by Packet Generation.Performance than traditional access way will be got well, as short in network delay, alleviates the offered load of core net etc.
Fig. 7 is the second access scene of the communication means of the FiWi network based on as shown in Figure 5.Access scene shown in Fig. 7 is that two users are connected respectively to two FiWi nodes, two FiWi nodes are connected respectively on two OLT, two OLT are connected to core net, in figure, omitted the controller being connected on FiWi node, FiWi node only shows wave point and optical fiber interface and has omitted all the other modules such as forwarding module.Access way in Fig. 7 is direct communication mode between user of access network.When two users are in different OLT links, can select this kind of access way.Concrete communication process and Fig. 6 are similar.
Fig. 8 is the 3rd access scene of the communication means of the FiWi network based on as shown in Figure 5.Access scene shown in Fig. 8 is a user, two FiWi nodes, user is connected to one of them FiWi node, we are made as FiWi node 1, two FiWi nodes are connected on an OLT, OLT is connected to core net, has omitted the controller being connected on FiWi node in figure, and FiWi node only shows wave point and optical fiber interface and omitted all the other modules such as forwarding module.Access way in Fig. 8 is bridging access way, when user communicates with core net by traditional access way access FiWi node 1, if FiWi node 1 occurs congested or disconnects to the communication link of core net, at this moment selecting the single-hop bridging access way in upper figure.First controller issues stream table to FiWi node, user radio access FiWi node 1, packet arrives FiWi node 1, packet carries out stream table coupling, if the destination address of packet is core net, and FiWi node 1 is congested to the communication link of core net, FiWi node 1 sends to controller by link circuit condition, controller is by global view and traffic monitoring, configure new stream table and be issued to FiWi node 1, (we suppose that controller selects within the scope of the access of FiWi node 1 and the good FiWi node as next-hop node of communication link state be FiWi node 2), FiWi node 1 carries out wireless bridging with FiWi node 2 by virtual interface, the package forward that FiWi node 1 arrives core net user is to FiWi node 2.FiWi node 2 also can be received the new stream table about this user data package that controller issues, when FiWi node 2 is received user's packet, in this node, data packet head is mated with stream entry, then according to stream table matching result, package forward is arrived to core net.Single-hop bridging access way is by selecting in time most suitable path to the virtual and global view of whole FiWi access network; protection access as traditional access way, makes user than traditional FiWi Access Network, have higher reliability and safety guarantee with communicating by letter of core net.
Fig. 9 is the 4th access scene of the communication means of the FiWi network based on as shown in Figure 5.Access scene shown in Fig. 9 is a user, two FiWi nodes, user is connected to one of them FiWi node, we are made as FiWi node 1, two FiWi nodes are connected respectively on two OLT, two OLT are connected to core net, have omitted the controller being connected on FiWi node in figure, and FiWi node only shows wave point and optical fiber interface and omitted all the other modules such as forwarding module.Access way in Fig. 9 is bridging access way, is the protection access of traditional access way.When user communicates with core net by traditional access way access FiWi node 1, if the OLT of connection FiWi node 1 arrives the communication link of core net, occur congested or disconnect, by controller, select the single-hop bridging access way in upper figure.
Figure 10 is the 5th access scene of the communication means of the FiWi network based on as shown in Figure 5.Access scene shown in Figure 10 is a user, n FiWi node (n>2), user is connected to one of them FiWi node, we are made as FiWi node 1, n FiWi node is all connected on an OLT, this OLT is connected to core net, has omitted the controller being connected on FiWi node in figure, and FiWi node only shows wave point and optical fiber interface and omitted all the other modules such as forwarding module.Access way in Figure 10 is multi-hop bridging access way.When user accesses while communicating by letter with core net by tradition, communication link is congested or disconnect, select single-hop bridging access way, if the FiWi node of down hop 2 is also in congestion state with the communication link of core net, by controller, upgrade stream table again, wireless bridging accesses next FiWi node, if the communication link that the front n-1 of the access of putting up a bridge jumps FiWi node and core net is all in congestion state, with regard to wireless bridging, access n FiWi node so, until can success communicate with core net.Concrete access procedure is the circulation of single-hop bridging access procedure.
By the mode of false code, the access scene as shown in Fig. 6 to Figure 10 is exemplarily described below.
Exemplarily, the wave point that definition user data package enters FiWi node 1 is virtual interface 1 (vport1), FiWi node 1 is virtual interface 2 (vport2) with the wave point of FiWi node 2, the optical interface that FiWi node 1 is connected with core net is virtual interface 3 (vport3), wave point between FiWi node 2 and FiWi node 1 is virtual interface 4 (vport4), wave point between FiWi node 2 and user is virtual interface 5 (vport5), and the optical interface that FiWi node 2 is connected with core net is virtual interface 6 (vport6).
User, to core net forwarding data in the situation that, packet enters FiWi node 1 by virtual interface 1 and from virtual interface 3, be forwarded to core net after overcurrent table coupling, the corresponding virtual interface 1 of packet inbound port, the corresponding virtual interface 3 of outbound port.
False code is:
As shown in Figure 6 and Figure 7 in the situation that, access in the situation of direct communication between two users of FiWi network, packet enters FiWi node 1 by virtual interface 1 and after overcurrent table coupling, from virtual interface 2, is forwarded to the virtual interface 4 of FiWi node 2, then from virtual interface 5, is transmitted to user 2 after overcurrent table coupling.
False code is:
As shown in Figure 8 and Figure 9 in the situation that, be that user is during with bridging access way core network access, packet enters FiWi node 1 by virtual interface 1 and after overcurrent table coupling, from virtual interface 2, is forwarded to the virtual interface 4 of FiWi node 2, then from virtual interface 6, is forwarded to core net after overcurrent table coupling.
False code is:
As shown in figure 10 in the situation that, be that user is during with bridging access way core network access, packet enters FiWi node 1 by virtual interface 1 and after overcurrent table coupling, from virtual interface 2, is forwarded to the virtual interface 4 of FiWi node 2, after overcurrent table coupling, from virtual interface 5, be forwarded to FiWi node 3, by that analogy, through n FiWi node afterwards by FiWi node n from virtual interface 3n core network access.
False code is:
The beneficial effect of the embodiment of the present invention is: by FiWi node configuration virtual interface, do not need to depend on the ins and outs of physical interface when network is safeguarded, reduced maintenance difficulties; Utilize the virtual interface transmitting data flow of FiWi node, make can intercom mutually between the two, thereby realize the mutual wireless bridging communication between FiWi node; The physical network that controller forms network equipments such as FiWi nodes utilizes network virtualization to carry out the global view of abstract formation FiWi UNE, thereby realize controller, the concentrated adjustment of global view is controlled.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a FiWi node, is characterized in that, described FiWi node comprises forwarding module and physical interface;
Described FiWi node utilizes a plurality of physical interfaces to communicate;
Described forwarding module is safeguarded a plurality of virtual interfaces, and described virtual interface and physical interface have mapping relations;
Described forwarding module, for being that the data flow that enters described FiWi node is selected virtual interface based on stream table, and the physical interface that described data flow is shone upon by described virtual interface forwards.
2. FiWi node as claimed in claim 1, is characterized in that, described physical interface comprises wave point and optical fiber interface; Wherein:
Described optical fiber interface is the physical interface that described FiWi node and optical line terminal communicate; Described wave point is the physical interface that described FiWi node and wireless user terminal and other FiWi node communicate;
Accordingly, described a plurality of virtual interface is 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, and described each wave point and at least one wireless dummy interface have mapping relations.
3. FiWi node as claimed in claim 2, is characterized in that,
Described virtual interface is corresponding to stream list item and can carry data flow;
Described forwarding module, for described data flow is mated to select virtual interface with stream list item, and the physical interface by the virtual interface mapping of described selection forwards by described data flow.
4. the FiWi node as described in claim 1-3 any one, is characterized in that, described forwarding module comprises stream table;
The stream list item of described stream table, comprises the information of virtual interface.
5. the FiWi node as described in claim 1-3 any one, is characterized in that, described FiWi node further comprises:
Storage pool, for carrying out buffer memory to entering the data flow of described FiWi node.
6. FiWi node as claimed in claim 5, is characterized in that, described virtual interface also comprises at least one storing virtual interface, between described storing virtual interface and described storage pool, has mapping relations.
7. the FiWi node as described in claim 1-3 any one, is characterized in that, described FiWi node further comprises escape way, between described FiWi node and peripheral control unit, by described escape way, communicates.
8. a FiWi combination network method for the FiWi node based on described in claim 1-7 any one, is characterized in that, described method comprises:
User terminal is linked on described FiWi node, and described FiWi node is connected to form physical network with optical line terminal respectively, and is connected with controller, and described each FiWi node configures its virtual interface according to physical interface;
Described controller builds virtual net view according to physical network to carry out Topology Discovery and virtual interface and physical interface is carried out to flow monitoring, forms the global view of FiWi network;
Described controller, according to the global view of described FiWi network, uses routing algorithm to generate stream table, and stream table is handed down to corresponding FiWi node.
9. FiWi combination network method as claimed in claim 8, is characterized in that,
Described a plurality of FiWi node, is connected with described optical line terminal by optical branching device, by optical line terminal, is connected with described core net.
10. FiWi combination network method as claimed in claim 8, is characterized in that, described controller builds virtual net view according to physical network, comprising:
Controller utilizes network virtualization that FiWi node and all the other network equipments are abstracted into dummy node, and sets up virtual link between the dummy node that can communicate by virtual interface.
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| CN105407141A (en) * | 2015-10-23 | 2016-03-16 | 北京邮电大学 | Content distribution method and system, and FiWi node equipment |
| 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 |
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| 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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