CN105812330A - Cellular network system, cellular network control method, cellular network control device, network element and concentration controller - Google Patents
Cellular network system, cellular network control method, cellular network control device, network element and concentration controller Download PDFInfo
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Abstract
The invention discloses a cellular network system, a cellular network control method, a cellular network control device, a network element and a centralized controller. The method comprises steps that an OpenFlow message sent by the centralized controller is collected by the network element, and the OpenFlow message comprises an OpenFlow control instruction; the OpenFlow message is analyzed to acquire the OpenFlow control instruction; the OpenFlow control instruction is performed according to preset rules. According to the cellular network system, the cellular network control method, the cellular network control device, the network element and the centralized controller, the control instruction is sent through the OpenFlow message, so wireless network control and data forwarding functions employ an OpenFlow protocol in a unified mode, two sets of protocols are not needed, and thereby an interface protocol at a control face and a data face is simplified.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of beehive network system, control method, device and network element and Centralized Controller.
Background technology
For following 5G (5-Generation, the 5th generation) network, people propose more the demand of " harsh " in the fusion etc. of speed, capacity, time delay and various network formats.In order to realize these demands, each enterprise and normal structure are in key technologies such as the transmission of primary study high band, extensive antenna, full duplex, new network framework and super-intensive networkings.Owing to future network standard is complicated, 2G to 5G network, WIFI (Wireless-Fidelity will be comprised simultaneously, Wireless Fidelity) etc. network technology, be accomplished by existing network framework is reformed to realize the flexible dispatching of resource and interference and coordination between multi-internet integration and each standard.
The research tendency of prior art is the theory of SDN (SoftwareDefinedNetwork, software defined network) technology to be applied in future network.The core concept of SDN will control and carrying separates, then will control centralization, thus realizing controlling flexibly and scheduling of resource.
At present, SDN technology obtains successfully in cable network, for instance Google is based on the B4 commercial network of SDN.But, SDN is being applied to wireless network, adopt OpenFlow (OF) protocol forward data, other Protocol Through Network are adopted to be controlled, that such as OpenRoads adopts is SNMP (SimpleNetworkManagementProtocol, Simple Network Management Protocol) agreement, Odin adopts Odin agreement, and control information and parameter are then encapsulated in radio-tap by CloudMAC.This makes the interface between wireless network control and carrying at least need two set consensus standards, i.e. a set of OpenFlow agreement and a set of control protocol, and the control protocol of each family is different from, each establishing one's own system, it is unified to be difficult to, and this is all unfavorable for the development that the 5G network architecture is reformed.
Therefore, it is necessary to propose a kind of cellular network control method so that wireless network control and data forwarding capability are all used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
Summary of the invention
To solve one technical problem is how to make wireless network control and data forwarding capability be used uniformly across OpenFlow agreement the disclosure, simplifies the interface protocol of chain of command and data surface.
The disclosure provides a kind of cellular network control method, including: receiving the OpenFlow message that Centralized Controller sends, OpenFlow message includes OpenFlow control instruction；Resolve OpenFlow message and obtain OpenFlow control instruction；OpenFlow control command is performed according to preset rules.
Alternatively, OpenFlow message is that OpenFlow controls stream table；And/or OpenFlow message is Experimenter message reserved in OpenFlow symmetric message.
Further, OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging, the renewal of QoS service quality；And/or encapsulate OpenFlow control instruction by the Experimenter message that OpenFlow symmetric message is reserved；And/or the OpenFlow obtaining including OpenFlow control instruction by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection controls stream table.
Alternatively, OpenFlow switch receives the charging regulation encapsulated by OpenFlow symmetric message that Centralized Controller sends；OpenFlow switch resolves OpenFlow symmetric message and obtains charging regulation；According to charging regulation, OpenFlow switch collecting charging information；Charge information is encapsulated in OpenFlow symmetric message and is sent to Centralized Controller by OpenFlow switch.
Alternatively, each OpenFlow base station is encapsulated by OpenFlow symmetric message current resource situation is also sent to Centralized Controller；Centralized Controller resolves OpenFlow symmetric message and obtains the resource situation that each OpenFlow base station is current；The Centralized Controller current resource situation scheduling user according to each OpenFlow base station.
Further, current resource situation includes running time-frequency resource, power, user situation and base station busy situation；And/or the current resource situation scheduling user that Centralized Controller is according to each OpenFlow base station, including: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
Alternatively, receiving the OpenFlow message from Centralized Controller, OpenFlow message includes forwarding data；Resolve OpenFlow message to obtain forwarding data；And/or receiving the OpenFlow message from other network elements, OpenFlow message includes forwarding data；Resolve OpenFlow message to obtain forwarding data.
Alternatively, extension OpenFlow flow table matching field includes: adds and controls function information to matching field, controls function information and includes user profile, user gradation, QoS service quality, radio link parameter information；And/or extension OpenFlow flow table instruction set and action collection include: if desired customer flow to be carried out statistics charging, then increase charging regulation field at extension matching field, increasing charging instruction in instruction set, concentrating in action increases the billing operation for different user；And/or if desired report Radio Resource and link information, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；And/or if desired realize QoS renewal, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
Alternatively, OpenFlow switch receives the Centralized Controller charging regulation by OpenFlow control stream gauge seal dress；Resolving OpenFlow control stream table and obtain matching field, instruction set and action collection, matching field includes charge information, instruction set and action collection and includes billing operation；OpenFlow switch mates charging regulation according to matching field, performs the charging instruction in instruction set and the billing operation of action concentration.
Alternatively, OpenFlow switch reception Centralized Controller controls the Qos rules for quality of service renewal of stream gauge seal dress by OpenFlow；Resolving OpenFlow control stream table and obtain matching field, instruction set and action collection, matching field includes Qos more fresh information, instruction set and action collection and includes Qos renewal operation；Mating Qos more fresh information according to matching field, the Qos performing the Qos instruction in instruction set and action concentration updates operation；And/or OpenFlow switch receives the Qos Policy Updates that Centralized Controller is encapsulated by OpenFlow symmetric message；Resolve OpenFlow symmetric message and obtain Qos Policy Updates；Qos Policy Updates are performed according to preset rules.
The present invention also provides for a kind of cellular network and controls device, including:
Receiver module, for receiving the OpenFlow message that Centralized Controller sends, OpenFlow message includes OpenFlow control instruction；Parsing module, is used for resolving OpenFlow message and obtains OpenFlow control instruction；Perform module, for performing OpenFlow control command according to preset rules.
Alternatively, OpenFlow message is that OpenFlow controls stream table；And/or
OpenFlow message is Experimenter message reserved in OpenFlow symmetric message.
Further, by Experimenter message encapsulation OpenFlow control instruction reserved in OpenFlow symmetric message；And/or package module is additionally operable to obtain including the OpenFlow control stream table of OpenFlow control instruction by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection；And/or OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging, the renewal of QoS service quality.
Alternatively, receiver module is for receiving the charging regulation encapsulated by OpenFlow symmetric message that Centralized Controller sends；Parsing module is used for resolving OpenFlow symmetric message and obtains charging regulation；Perform module for according to charging regulation, collecting charging information；Device also includes sending module, is sent to Centralized Controller for being encapsulated in OpenFlow symmetric message by charge information.
Alternatively, package module is for the current resource situation encapsulated by OpenFlow symmetric message and is sent to Centralized Controller, Centralized Controller resolves OpenFlow symmetric message and obtains the resource situation that each OpenFlow base station is current, and is sent to each OpenFlow base station by the instruction of OpenFlow symmetric message encapsulation scheduling user；Perform module for performing the Centralized Controller instruction according to current resource situation scheduling user.
Alternatively, current resource situation includes running time-frequency resource, power, user situation and base station busy situation；And/or perform module for the current resource situation scheduling user according to each OpenFlow base station, and including: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
Alternatively, receiver module is for receiving the OpenFlow message from Centralized Controller, and the encapsulation of OpenFlow symmetric message forwards packet；Parsing module is used for resolving OpenFlow symmetric message and obtains forwarding data；And/or receiver module is for receiving the OpenFlow symmetric message from other network elements, OpenFlow includes forwarding data；Parsing module is used for resolving OpenFlow message and obtains forwarding data.
Alternatively, extension matching field includes: adds and controls function information to matching field, controls function information and includes user profile, user gradation, QoS service quality, radio link parameter information；And/or extension matching field, expansion instruction set and action collection include: if desired customer flow to be carried out statistics charging, then increase charging regulation field at extension matching field, increasing charging instruction in instruction set, concentrating in action increases the billing operation for different user；And/or if desired report Radio Resource and link information, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；And/or if desired realize QoS renewal, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
Alternatively, receiver module controls the charging regulation of stream gauge seal dress for receiving Centralized Controller by OpenFlow；Parsing module is used for resolving OpenFlow control stream table and obtains matching field, instruction set and action collection, and matching field includes charge information, instruction set and action collection and includes billing operation；Perform module for mating charging regulation according to matching field, perform the billing operation that the charging instruction in instruction set is concentrated with action.
Alternatively, receiver module is updated by the OpenFlow Qos rules for quality of service controlling stream gauge seal dress for receiving Centralized Controller；Parsing module is used for resolving OpenFlow control stream table and obtains matching field, instruction set and action collection, and matching field includes Qos more fresh information, instruction set and action collection and includes Qos renewal operation；Performing module for mating Qos more fresh information according to matching field, the Qos that the Qos instruction in execution instruction set and action are concentrated updates and operates；And/or
Receiver module is for receiving the Qos Policy Updates that Centralized Controller is encapsulated by OpenFlow symmetric message；Parsing module is used for resolving OpenFlow symmetric message and obtains Qos Policy Updates；Perform module for performing Qos Policy Updates according to preset rules.
The disclosure also provides for a kind of network element, and network element is core network element and/or access network elements, controls device including cellular network described above；
Communicate with Centralized Controller, for controlling to flow table reception or send OpenFlow to control message by OpenFlow symmetric message or OpenFlow.
Alternatively, core network element is OpenFlow switch, and access network elements is the interface OpenFlow agreement that OpenFlow base station, base station and switch all support between route test face and data surface.
The disclosure also provides for a kind of Centralized Controller, including:
Cellular network described above controls device, communicates with network element, for being received or send controlled message by OpenFlow symmetric message or OpenFlow control stream table.
The disclosure also provides for a kind of beehive network system, it is characterised in that including:
Network element described above；Centralized Controller described above.
The beehive network system of disclosure offer, control method, device and network element and Centralized Controller, control instruction is sent by OpenFlow message, wireless network control and data forwarding capability is made all to be used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
Accompanying drawing explanation
Fig. 1 illustrates the flow chart of the cellular network control method of one embodiment of the invention.
The 5G network architecture schematic diagram based on SDN and OpenFlow of Fig. 2 one embodiment of the invention.
Fig. 3 illustrates the schematic diagram of the structure composed of the OpenFlow of one embodiment of the invention.
Fig. 4 illustrates the flow chart realizing billing function based on OpenFlow symmetric message of one embodiment of the invention.
Fig. 5 illustrates the flow chart realizing load balancing based on OpenFlow symmetric message of one embodiment of the invention.
Fig. 6 illustrates the flow chart realizing billing function based on OpenFlow control stream table of one embodiment of the invention.
Fig. 7 illustrates that the cellular network of one embodiment of the invention controls the structural representation of device.
Fig. 8 illustrates that the cellular network of one embodiment of the invention controls the structural representation of device.
Fig. 9 illustrates the structural representation of the network element of one embodiment of the invention.
Figure 10 illustrates the structural representation of the network element of one embodiment of the invention.
Figure 11 illustrates the structural representation of the beehive network system of one embodiment of the invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, the exemplary embodiment of the present invention is wherein described.
Fig. 1 illustrates the flow chart of the cellular network control method of one embodiment of the invention.As it is shown in figure 1, the method specifically includes that
Step S100, network element receive the OpenFlow message that Centralized Controller sends, and OpenFlow message includes OpenFlow control instruction；
Step S102, parsing OpenFlow message obtain OpenFlow control instruction；
Step S104, according to preset rules perform OpenFlow control command.
So, by extending existing OpenFlow agreement, use OpenFlow message to send OpenFlow control instruction, make wireless network control and data forwarding capability all be used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
The 5G network architecture schematic diagram based on SDN and OpenFlow of Fig. 2 one embodiment of the invention.As shown in Figure 2, this network is mainly made up of with WIFI hot spot and terminal the base station of Centralized Controller 200, the network element such as switch of core-network side 203, Access Network side 201, in SDN, core net framework will simplify, bottom is the such as router/switch/Gateway of the network element for data simple process and forwarding etc., and control function or network element move on to Centralized Controller such as MME (MobilityManagementEntity, mobile management entity MME), billing function etc..Control and the data of Access Network side 201 can not separate.Separation is that one of which selects, and after separation, controls functionally to move on to Centralized Controller by part, it is possible to achieve the functions such as combined dispatching, interference coordination, resource management.Therefore, Centralized Controller is accomplished by communicating with the network element of core net and Access Network side, it is necessary to corresponding interface protocol.The present invention can realize controlling and forwarding capability based on OpenFlow agreement in the SDN after this separation, it is possible to simplifies the agreement of interface surface and chain of command, simplifies network structure, improves Consumer's Experience and information transfer efficiency.
Fig. 3 illustrates the schematic diagram of the structure composed of the OpenFlow of one embodiment of the invention, as it is shown on figure 3, OpenFlow framework is made up of OpenFlow Centralized Controller 301 and OpenFlow switch 302.Each OpenFlow switch (Switch) 302 is made up of one or more stream tables (flowtable), group's table (grouptable) and one or more OpenFlow passage (pipeline).Wherein stream table and group's table are for realizing lookup and the forwarding capability of packet, and OpenFlow passage is the interface connecting switch with outside OpenFlow controller, and the agreement of use is OpenFlow agreement (OF agreement).
In one embodiment, OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging, the renewal of QoS service quality.
OpenFlow agreement major function is the route forwarding table by flexible design, simplify the forwarding of data, by extending OpenFlow agreement, increase manages the support of function for the control required for wireless network, the reporting of such as wireless resource scheduling, metrical information, user's charging etc., it is possible to simplify the agreement controlled with data-interface.
In one embodiment, network element includes core network element and/or access network elements.
Core network element is OpenFlow switch, and access network elements is the interface OpenFlow agreement that OpenFlow base station, base station and switch all support between route test face and data surface.
In one embodiment, OpenFlow message can control stream table for OpenFlow；Or OpenFlow message can be Experimenter message reserved in OpenFlow symmetric message.
By extending existing OpenFlow agreement, namely encapsulate control instruction by the symmetric message of OpenFlow or send OpenFlow control instruction by OpenFlow control stream table, can under not affecting the data forwarding capability situation that existing standard is supported, achieve the wireless network control function based on SDN, wireless network control and data forwarding capability is made all to be used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
In one embodiment, the Experimenter message encapsulation OpenFlow control instruction that OpenFlow symmetric message is reserved is utilized.Symmetric message will be utilized to encapsulate control instruction and information, it is achieved information transmission between controller and bottom the network element base station etc. of Access Network (switch of such as core net).
OpenFlow agreement supports three kinds of type of messages: Centralized Controller is to switch (controller-to-switch), asynchronous message (asynchronous) and symmetric message (symmetric), each class message has again many sub-type of messages.Controller-to-switch message is initiated by Centralized Controller, is used for managing or obtain switch state；Asynchronous message is initiated by switch, is used for changing network event or switch status updating to controller；Symmetric message can be initiated by switch or controller.Test for the ease of developer and verify some functions, OpenFlow has reserved a message in symmetric message, namely Experimenter message, in currently practical deployment, if the OpenFlow protocol version used is relatively low, message therein is called Vendor message, but its function is consistent with Experimenter message, simply title is different, have no effect on and specifically realize, namely the Vendor message encapsulation control instruction of OpenFlow symmetric message can be passed through in the agreement of lowest version, to save interface protocol, simplify the protocol architecture of SDN, improve Consumer's Experience.
The schematic diagram of the OpenFlow symmetric message Experimenter message of one embodiment of the invention.As follows
As above shown in code, this Experimenter (experimenter) message can add any user-defined content, such as by the Information encapsulation of the control instruction controlled required for function and transmission within the message, so can realize message bi-directional between controller and bottom network element.
In one embodiment, the OpenFlow obtaining including OpenFlow control instruction by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection controls stream table.
OpenFlow flow table is issued to OpenFlow switch by OpenFlow controller, and each switch includes n level stream table (at least 1 grade).The gauge outfit of stream table includes matching field (MatchFields), priority, enumerator, instruction (Introductions), timer etc., by the critical field (matching field) of matched data bag, determine how to process this packet.In a standard, the effect of stream table simply specifies packet and forwards rule.
The hope of this programme, by when not changing existing standard, extending OpenFlow flow table, set up an independent stream table to realize the control function of wireless access network and core net, is defined as " controlling stream table ".Specifically, a blank stream table is initially set up.Secondly, extend matching field, add the information relevant to controlling function, for instance user profile, user gradation, QoS (QualityofService, service quality), radio link parameter information etc..Extension OpenFlow flow table matching field includes: adds and controls function information to matching field, controls function information and includes user profile, user gradation, QoS service quality, radio link parameter information.
Finally, expansion instruction set and action collect (ActionSet), and the function realized according to specific needs is to determine concrete operation.
If needing customer flow carries out statistics charging, then can increase charging regulation；If needing to report Radio Resource and link information, in order to Centralized Controller coordinates the resource between each base station or each standard and disturbed condition, then just can increase instruction that metrical information reports etc..Specifically, extension OpenFlow flow table instruction set and action collection include: customer flow if desired carries out statistics charging, then increasing charging regulation field at extension matching field, increase charging instruction in instruction set, concentrating in action increases the billing operation for different user；If desired Radio Resource and link information are reported, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；If desired realize QoS to update, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
Fig. 4 illustrates the flow chart of the billing function based on OpenFlow symmetric message of one embodiment of the invention.As shown in Figure 4, the method specifically includes that
Step S400, OpenFlow switch receive the charging regulation encapsulated by OpenFlow symmetric message that Centralized Controller sends；
Step S402, OpenFlow switch resolve OpenFlow symmetric message and obtain charging regulation；
Step S404, according to charging regulation, OpenFlow switch collecting charging information；
Charge information is encapsulated in OpenFlow symmetric message and is sent to Centralized Controller by step S406, OpenFlow switch.
Extend existing OpenFlow agreement, send charging regulation by OpenFlow symmetric message, make wireless network control and data forwarding capability all be used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
The beehive network system control method that the embodiment of the present invention provides, it is possible to reduce the complexity of SDN, it is to avoid the bottleneck of data transmission, reduces maintenance costs simultaneously, provides the user more reliable and efficient service.
In one embodiment, Centralized Controller issues the charging regulation of different user in core network switches by Experimenter message, switch judges to belong to which type of user for the packet received, thus selecting corresponding charging regulation, being encapsulated in Experimenter message after statistics charge information and being sent to Centralized Controller.Thus realizing traffic statistics and the billing function of data.Namely by the symmetric message encapsulation control instruction of OpenFlow under not affecting the data forwarding capability situation that existing standard is supported, it is achieved that based on the wireless network control function of SDN, simplify the interface protocol of chain of command and data surface.
Fig. 5 illustrates the flow chart realizing load balancing based on OpenFlow symmetric message of one embodiment of the invention.As it is shown in figure 5, the method specifically includes that
Current resource situation that step S500, each OpenFlow base station are encapsulated by OpenFlow symmetric message is also sent to Centralized Controller；
Step S502, Centralized Controller resolve OpenFlow symmetric message and obtain the resource situation that each OpenFlow base station is current；
Step S504, the Centralized Controller current resource situation scheduling user according to each OpenFlow base station.
In one embodiment, in the exprimentermessage of OpenFlow symmetric message, in " experimenter-definedarbitraryadditionaldata ", definition load balancing is regular.
This load balancing rule may is that hypothesis UE is under base station A, B two covering stood, it is currently accessed base station A, after the information of each base station collected by controller, find that A is busy, B relative free, so can pass through exprimentermessage to send instructions under A and the B of base station, allow UE be switched to B from A.The form of instruction is not fixing, as long as predefined is well.For example, it is possible to simple definition following four: instruction: HANDOVER；The mark of UE: that UE switches to make base station know；Source base station: base station A；Target BS: base station B.Switching flow, according to corresponding information, is initiated in two base stations.
Realize dispatching user according to resource situation by OpenFlow symmetric message, make wireless network control and data forwarding capability all be used uniformly across OpenFlow agreement, without adopting two set agreements, it is possible to simplify the interface protocol of chain of command and data surface.
In one embodiment, current resource situation includes running time-frequency resource, power, user situation and base station busy situation.The Centralized Controller current resource situation scheduling user according to each OpenFlow base station, including: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
In one embodiment, network element receives the OpenFlow message from Centralized Controller, and OpenFlow message includes forwarding data；Resolve OpenFlow message to obtain forwarding data.In one embodiment, network element receives the OpenFlow message from other network elements, and OpenFlow message includes forwarding data；Resolve OpenFlow message to obtain forwarding data.By OpenFlow protocol forward data between each network element, control stream table particular by OpenFlow symmetric message or OpenFlow and can realize the forwarding capability of data, wireless network control and data forwarding capability is made all to be used uniformly across OpenFlow agreement, without adopting two set agreements, simplify the interface protocol of chain of command and data surface.
In one embodiment, current resource situation (including video resource, power, user situation etc.) is reported Centralized Controller by Experimenter message by each base station, Centralized Controller is according to each base station busy situation, when having substantially no effect on Consumer's Experience, by some users from busy base station scheduling to not busy base station, thus the combined dispatching realized between base station resource or networks with different systems.Specifically schedule information can be issued to each base station by as above Experimenter message.So, by utilizing symmetric message such as the Experimenter message, vendor message of OpenFlow to encapsulate the instruction relevant to wireless network control function and information, the control function of wireless network such as Access Network and core net can be realized, and network structure can be simplified.
Fig. 6 illustrates the flow chart realizing billing function based on OpenFlow control stream table of one embodiment of the invention.As it is shown in fig. 7, the method specifically includes that
Step S600, OpenFlow switch are received Centralized Controller and are controlled the charging regulation of stream gauge seal dress by OpenFlow.
Step S602, parsing OpenFlow control stream table and obtain matching field, instruction set and action collection, and matching field includes charge information, instruction set and action collection and includes billing operation.
Step S604, OpenFlow switch mate charging regulation according to matching field, perform the charging instruction in instruction set and the billing operation of action concentration.
In one embodiment, increasing n row content in " controlling stream table ", every a line specifies the charging regulation of a type of user.Increasing user profile such as set meal type, grade etc. at matching field, increase charging instruction in instruction field, concentrating in action increases concrete traffic statistics and billing operation order.
The gauge outfit of stream table includes matching field (MatchFields), priority, enumerator, instruction (Introductions), timer etc., by the critical field (matching field) of matched data bag, determine how to process this packet.
In one embodiment, it is possible to by extending existing former stream table, it is not necessary to redefine new stream table.When existing stream table is unsatisfactory for demand, it is also possible to redefine stream table according to the actual requirements.
In one embodiment, when continuing to use existing stream table, it is possible to realize controlling function mainly through strengthening matching field, instruction and action collection.For charging, prepaid user needs to judge whether also telephone expenses, it is therefore desirable to relatively frequently by information reporting to controller, controller calculates spending amount according to unit price, and then whether coupling also has credit balance；Postpaid service user can have a degree of overdraw, and therefore statistical information report cycle can be longer.Below for charge on traffic function, it is possible to definition:
MatchFields=101；// represent prepaid user's traffic statistics；
MatchFields=102；// represent postpaid service user's traffic statistics, according to user type and actual demand, it is also possible to further user is classified；
……
Corresponding instruction also increases command adapted thereto, for instance " prepaid user's traffic statistics write action collection ".
In the action (action) collected in action, definition " prepaid user's traffic statistics " etc. is taken action, for instance the report cycle etc. of definition statistical information.
Above-mentioned rule need to pre-define.When receiving packet, switch mates, and when matching 101, collects the action adding " prepaid user's traffic statistics " in (actionset) in action according to instruction (instruction).After all stream tables all mate, action concentration there may be multiple action, is performed.As such, it is possible to simplify the control protocol of SDN so that control and forwarding capability all passes through OpenFlow protocol realization, simplify agreement.
In one embodiment, OpenFlow switch reception Centralized Controller controls the Qos rules for quality of service renewal of stream gauge seal dress by OpenFlow；Resolving OpenFlow control stream table and obtain matching field, instruction set and action collection, matching field includes Qos more fresh information, instruction set and action collection and includes Qos renewal operation；Mating Qos more fresh information according to matching field, the Qos performing the Qos instruction in instruction set and action concentration updates operation.
Increasing n row content in " controlling stream table ", every a line specifies a class QoS rule.Increasing QoS information at matching field, increase QoS instruction in instruction field, concentrating in action increases the operation for different QoS.
In one embodiment, OpenFlow switch receives the Qos Policy Updates that Centralized Controller is encapsulated by OpenFlow symmetric message；Resolve OpenFlow symmetric message and obtain Qos Policy Updates；Qos Policy Updates are performed according to preset rules.
Up-to-date QoS rule is encapsulated in Experimenter message by Centralized Controller, is issued in each core network element.
Fig. 7 illustrates that the cellular network of one embodiment of the invention controls the structural representation of device, includes as it is shown in fig. 7, this cellular network controls device 700:
Receiver module 702, for receiving the OpenFlow message that Centralized Controller sends, OpenFlow message includes OpenFlow control instruction；
Parsing module 704, is used for resolving OpenFlow message and obtains OpenFlow control instruction；
Perform module 706, for performing OpenFlow control command according to preset rules.
The cellular network of the embodiment of the present invention controls device, control instruction is sent by OpenFlow message, make wireless network control and data forwarding capability all be used uniformly across OpenFlow agreement, without adopting two set agreements, simplify the interface protocol of chain of command and data surface.
In one embodiment, OpenFlow message is that OpenFlow controls stream table；And/or
OpenFlow message is Experimenter message reserved in OpenFlow symmetric message.
Fig. 8 illustrates that the cellular network of one embodiment of the invention controls the structural representation of device, and as shown in Figure 8, this cellular network controls device 800 and includes:
Package module 802, encapsulates OpenFlow control instruction for the Experimenter message utilizing OpenFlow symmetric message reserved；Package module 802 is additionally operable to obtain including by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection the OpenFlow of OpenFlow control instruction and controls stream table.
In one embodiment, OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging, the renewal of QoS service quality.
In one embodiment, device also includes sending module 904.
Receiver module 801 is for receiving the charging regulation encapsulated by OpenFlow symmetric message that Centralized Controller sends；Parsing module 803 is used for resolving OpenFlow symmetric message and obtains charging regulation；Perform module 805 for according to charging regulation, collecting charging information；Sending module 904, is sent to Centralized Controller for being encapsulated in OpenFlow symmetric message by charge information.
In one embodiment, package module 802 is for the current resource situation encapsulated by OpenFlow symmetric message and is sent to Centralized Controller, Centralized Controller resolves OpenFlow symmetric message and obtains the resource situation that each OpenFlow base station is current, and is sent to each OpenFlow base station by the instruction of OpenFlow symmetric message encapsulation scheduling user；
Perform module 805 for performing the Centralized Controller instruction according to current resource situation scheduling user.
In one embodiment, current resource situation includes running time-frequency resource, power, user situation and base station busy situation；
And/or
Perform module 805 for the current resource situation scheduling user according to each OpenFlow base station, including: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
In one embodiment, receiver module 801 is for receiving the OpenFlow message from Centralized Controller, and the encapsulation of OpenFlow symmetric message forwards packet；Parsing module 903 is used for resolving OpenFlow symmetric message and obtains forwarding data；Receiver module 901 is for receiving the OpenFlow symmetric message from other network elements, and OpenFlow includes forwarding data；Parsing module 903 is used for resolving OpenFlow message and obtains forwarding data.
In one embodiment, extension matching field includes: adds and controls function information to matching field, controls function information and includes user profile, user gradation, QoS service quality, radio link parameter information.
Extension matching field, expansion instruction set and action collection include:
Customer flow if desired carrying out statistics charging, then increases charging regulation field at extension matching field, increase charging instruction in instruction set, concentrating in action increases the billing operation for different user；
And/or
If desired Radio Resource and link information are reported, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；
And/or
If desired realize QoS to update, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
In one embodiment, receiver module 801 controls the charging regulation of stream gauge seal dress for receiving Centralized Controller by OpenFlow；
Parsing module 803 is used for resolving OpenFlow control stream table and obtains matching field, instruction set and action collection, and matching field includes charge information, instruction set and action collection and includes billing operation；
Perform module 805 for mating charging regulation according to matching field, perform the billing operation that the charging instruction in instruction set is concentrated with action.
In one embodiment, receiver module 801 is updated by the OpenFlow Qos rules for quality of service controlling stream gauge seal dress for receiving Centralized Controller；Parsing module 803 is used for resolving OpenFlow control stream table and obtains matching field, instruction set and action collection, and matching field includes Qos more fresh information, instruction set and action collection and includes Qos renewal operation；Performing module 805 for mating Qos more fresh information according to matching field, the Qos that the Qos instruction in execution instruction set and action are concentrated updates and operates；
And/or
Receiver module 801 is for receiving the Qos Policy Updates that Centralized Controller is encapsulated by OpenFlow symmetric message；Parsing module 803 is used for resolving OpenFlow symmetric message and obtains Qos Policy Updates；Perform module 805 for performing Qos Policy Updates according to preset rules.
Fig. 9 illustrates the structural representation of the network element of one embodiment of the invention, as it is shown in figure 9, network element 900 is core network element and/or access network elements, network element 900 includes cellular network as above and controls device 902；This network element and Centralized Controller communicate, for controlling to flow table reception or send OpenFlow to control message by OpenFlow symmetric message or OpenFlow.
In one embodiment, core network element is OpenFlow switch, and access network elements is the interface OpenFlow agreement that OpenFlow base station, base station and switch all support between route test face and data surface.
Figure 10 illustrates the structural representation of the Centralized Controller of one embodiment of the invention, as shown in Figure 10, this Centralized Controller 1000 includes cellular network as above and controls device 1002, communicates with network element, for being received or send controlled message by OpenFlow symmetric message or OpenFlow control stream table.
Figure 11 illustrates the structural representation of the beehive network system of one embodiment of the invention, and as shown in figure 11, this beehive network system 1100, including such as said network element 1102 and above-mentioned Centralized Controller 1104.
The beehive network system of the embodiment of the present invention, extend existing OpenFlow agreement, control instruction is sent by OpenFlow message, wireless network control and data forwarding capability is made all to be used uniformly across OpenFlow agreement, without adopting two set agreements, thus simplifying the interface protocol of chain of command and data surface.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principles of the invention and practical application are better described, and makes those of ordinary skill in the art it will be appreciated that the present invention is thus design is suitable to the various embodiments with various amendments of special-purpose.
Claims (17)
1. a cellular network control method, it is characterised in that including:
Receiving the OpenFlow message that Centralized Controller sends, described OpenFlow message includes OpenFlow control instruction；
Resolve described OpenFlow message and obtain described OpenFlow control instruction；
Described OpenFlow control command is performed according to preset rules.
2. method according to claim 1, it is characterised in that include
Described OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging or QoS service quality and updates；
And/or
Described OpenFlow message is that OpenFlow controls stream table, and the OpenFlow obtaining including OpenFlow control instruction by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection controls stream table.
And/or
Described OpenFlow message is Experimenter message reserved in OpenFlow symmetric message, and the Experimenter message reserved by OpenFlow symmetric message encapsulates described OpenFlow control instruction.
3. method according to claim 2, it is characterised in that including:
OpenFlow switch receives the charging regulation encapsulated by OpenFlow symmetric message that described Centralized Controller sends；Described OpenFlow switch resolves described OpenFlow symmetric message and obtains charging regulation；According to described charging regulation, described OpenFlow switch collecting charging information；Described charge information is encapsulated in described OpenFlow symmetric message and is sent to described Centralized Controller by described OpenFlow switch；
And/or
Described method also includes:
Current resource situation that each OpenFlow base station is encapsulated by OpenFlow symmetric message is also sent to described Centralized Controller；Described Centralized Controller resolves described OpenFlow symmetric message and obtains the resource situation that each OpenFlow base station is current；The described Centralized Controller current resource situation scheduling user according to described each OpenFlow base station.
4. method according to claim 3, it is characterised in that including:
Described current resource situation includes running time-frequency resource, power, user situation and base station busy situation；
And/or
Described Centralized Controller includes according to the current resource situation scheduling user of described each OpenFlow base station: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
5. method according to claim 1, it is characterised in that
Receiving the OpenFlow message from Centralized Controller, described OpenFlow message includes forwarding data；Resolve described OpenFlow message to obtain forwarding data；
And/or
Receiving the OpenFlow message from other network elements, described OpenFlow message includes forwarding data；Resolve described OpenFlow message to obtain forwarding data.
6. method according to claim 2, it is characterised in that
Described extension OpenFlow flow table matching field includes:
Adding and control function information to matching field, described control function information includes user profile, user gradation, QoS service quality, radio link parameter information；
And/or
Extension OpenFlow flow table instruction set and action collection include:
Customer flow if desired carrying out statistics charging, then increases charging regulation field at extension matching field, increase charging instruction in instruction set, concentrating in action increases the billing operation for different user；
And/or
If desired Radio Resource and link information are reported, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；
And/or
If desired realize QoS to update, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
7. method according to claim 6, it is characterised in that including:
OpenFlow switch is received described Centralized Controller and is controlled the charging regulation of stream gauge seal dress by OpenFlow；Resolving described OpenFlow control stream table and obtain matching field, instruction set and action collection, described matching field includes charge information, described instruction set and action collection and includes billing operation；Described OpenFlow switch mates charging regulation according to matching field, performs the charging instruction in described instruction set and the billing operation of described action concentration.
And/or
Described method also includes:
OpenFlow switch is received described Centralized Controller and is updated by the OpenFlow Qos rules for quality of service controlling stream gauge seal dress；Resolving described OpenFlow control stream table and obtain matching field, instruction set and action collection, described matching field includes Qos more fresh information, described instruction set and action collection and includes Qos renewal operation；Mating Qos more fresh information according to matching field, the Qos performing the Qos instruction in described instruction set and described action concentration updates operation；
And/or
Described method also includes:
OpenFlow switch receives the Qos Policy Updates that described Centralized Controller is encapsulated by OpenFlow symmetric message；Resolve described OpenFlow symmetric message and obtain Qos Policy Updates；Described Qos Policy Updates are performed according to preset rules.
8. a cellular network controls device, it is characterised in that including:
Receiver module, for receiving the OpenFlow message that Centralized Controller sends, described OpenFlow message includes OpenFlow control instruction；
Parsing module, is used for resolving described OpenFlow message and obtains described OpenFlow control instruction；
Perform module, for performing described OpenFlow control command according to preset rules.
9. device according to claim 8, it is characterised in that described OpenFlow message is that OpenFlow controls stream table, and described OpenFlow message is Experimenter message reserved in OpenFlow symmetric message；
Described device also includes:
Package module, encapsulates described OpenFlow control instruction for the Experimenter message utilizing OpenFlow symmetric message reserved；
And/or
Package module is additionally operable to obtain including by setting up OpenFlow flow table, extension OpenFlow flow table matching field, extension OpenFlow flow table instruction set and action collection the OpenFlow of OpenFlow control instruction and controls stream table；
And/or
Described OpenFlow control instruction includes resource joint scheduling, interference coordination, mobile management, charging, the renewal of QoS service quality.
10. device according to claim 9, it is characterised in that
Described receiver module is for receiving the charging regulation encapsulated by OpenFlow symmetric message that described Centralized Controller sends；Described parsing module is used for resolving described OpenFlow symmetric message and obtains charging regulation；Described execution module is for according to described charging regulation, collecting charging information；Described device also includes sending module, is sent to described Centralized Controller for being encapsulated in described OpenFlow symmetric message by described charge information；
And/or
Described package module is for the current resource situation encapsulated by OpenFlow symmetric message and is sent to described Centralized Controller, Centralized Controller resolves described OpenFlow symmetric message and obtains the resource situation that each OpenFlow base station is current, and is sent to each OpenFlow base station by the instruction of OpenFlow symmetric message encapsulation scheduling user；Described execution module is for performing the instruction according to current resource situation scheduling user of the described Centralized Controller.
11. device according to claim 10, it is characterised in that including:
Described current resource situation includes running time-frequency resource, power, user situation and base station busy situation；
And/or
Described execution module dispatches user for the current resource situation according to described each OpenFlow base station, including: the certain customers of busy OpenFlow base station are dispatched to not busy OpenFlow base station.
12. device according to claim 9, it is characterised in that
Described receiver module is for receiving the OpenFlow message from Centralized Controller, and the encapsulation of described OpenFlow symmetric message forwards packet；Described parsing module is used for resolving described OpenFlow symmetric message and obtains forwarding data；
And/or
Described receiver module is for receiving the OpenFlow symmetric message from other network elements, and described OpenFlow includes forwarding data；Described parsing module is used for resolving described OpenFlow message and obtains forwarding data.
13. device according to claim 10, it is characterised in that
Described extension matching field includes:
Adding and control function information to matching field, described control function information includes user profile, user gradation, QoS service quality, radio link parameter information；
And/or
Described extension matching field, expansion instruction set and action collection include:
Customer flow if desired carrying out statistics charging, then increases charging regulation field at extension matching field, increase charging instruction in instruction set, concentrating in action increases the billing operation for different user；
And/or
If desired Radio Resource and link information are reported, then report Radio Resource and link information rule field in extension matching field increase, increasing in instruction set and report Radio Resource and link information instruction, concentrating in action increases the rule reporting Radio Resource and link information；
And/or
If desired realize QoS to update, then in instruction set, increase Qos instruction, concentrate in action and increase the operation for different Qos.
14. device according to claim 13, it is characterised in that including:
Described receiver module controls the charging regulation of stream gauge seal dress for receiving described Centralized Controller by OpenFlow；Described parsing module is used for resolving described OpenFlow control stream table and obtains matching field, instruction set and action collection, and described matching field includes charge information, described instruction set and action collection and includes billing operation；Described execution module, for mating charging regulation according to matching field, performs the charging instruction in described instruction set and the billing operation of described action concentration.
And/or
Described device also includes:
Described receiver module is updated by the OpenFlow Qos rules for quality of service controlling stream gauge seal dress for receiving described Centralized Controller；Described parsing module is used for resolving described OpenFlow control stream table and obtains matching field, instruction set and action collection, and described matching field includes Qos more fresh information, described instruction set and action collection and includes Qos renewal operation；Described execution module is for mating Qos more fresh information according to matching field, and the Qos performing the Qos instruction in described instruction set and described action concentration updates operation；
And/or
Described receiver module is for receiving the Qos Policy Updates that described Centralized Controller is encapsulated by OpenFlow symmetric message；Described parsing module is used for resolving described OpenFlow symmetric message and obtains Qos Policy Updates；Described execution module is for performing described Qos Policy Updates according to preset rules.
15. a network element, it is characterised in that described network element is core network element and/or access network elements, control device including the cellular network as described in arbitrary in claim 8-14；
Communicate with Centralized Controller, for controlling to flow table reception or send OpenFlow to control message by OpenFlow symmetric message or OpenFlow.
16. a Centralized Controller, it is characterised in that including:
In claim 8-14 arbitrary as described in cellular network control device, communicate with network element, receive or send control message for controlling stream table by OpenFlow symmetric message or OpenFlow.
17. a beehive network system, it is characterised in that including:
Network element as claimed in claim 15；
Centralized Controller as claimed in claim 16.
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