CN105979555B - A kind of user access method under new network framework based on SDN and Hotspot2.0 - Google Patents
A kind of user access method under new network framework based on SDN and Hotspot2.0 Download PDFInfo
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- CN105979555B CN105979555B CN201610497807.XA CN201610497807A CN105979555B CN 105979555 B CN105979555 B CN 105979555B CN 201610497807 A CN201610497807 A CN 201610497807A CN 105979555 B CN105979555 B CN 105979555B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
Abstract
User access method under a kind of new network framework based on SDN and Hotspot2.0 of the present invention, belongs to wireless communication field.Specifically: user judges whether current Wi-Fi network supports Hotspot2.0；It is requested if so, being sent by the end AP to SDN global controller；Current Wi-Fi network information is handed down to each end AP by SDN global controller, is parsed post package into ANQP protocol frame format and is handed down to user.Each user Configuration network filtering policy according to demand, is filtered current Wi-Fi network information；And judge whether the network after filtering also supports Hotspot2.0, if so, connection Wi-Fi network is authenticated automatically；Otherwise user accesses Wi-Fi network by traditional approach；SDN global controller carries out identity information verifying by RADIUS；User terminal is connected to internet after success；Advantage is: by SDN technology in conjunction with Hotspot2.0 technology, the information for solving the cell increased newly in Hotspot2.0 carrys out source problem, simultaneously because better controlling of the SDN to network itself, preferably guarantees that Cellular Networks are merged with the seamless of Wi-Fi network.
Description
Technical field
The invention belongs to wireless communication field, the Wi-Fi network architecture design being related in wireless communication, specifically a kind of base
User access method under the new network framework of SDN and Hotspot2.0.
Background technique
Smart phone persistently popularize and the use of wearable device, the substantially increasing of mobile data usage amount will be brought
It is long.The prediction address that network equipment giant Cisco issues a few days ago shows that, by 2019, global radio data traffic will rise to 10
Times present level." the visual network index " of Cisco studies predictive display, and last year global radio data traffic reaches
30000000000 GB.Cisco analyst thinks, if this growth trend continues, to the wireless data of Global Internet in 2019
Flow is up to 292,000,000,000 GB.The key drivers that wireless data traffic increases substantially are exactly the original increasing of mobile subscriber
Long, whole world mobile data user is about 4,300,000,000 at present, will be added to 5,200,000,000 by 2019.That is, 7,200,000,000 people of the present whole world
In mouthful, about 59% possesses mobile phone.By 2019, global total population increased to 7,600,000,000, and the population ratio for possessing mobile phone will increase
It is added to 69%.In addition to this, there are also 3,200,000,000 wireless devices for machine-machine communication, especially in industry and other quotient
Under industry environment with all kinds of wireless devices of other machines shared data.It among these include 5.78 hundred million wearable devices, such as strong
Body tracker, Worn type wireless camera etc..Cisco thinks that the data usage amount to wearable device in 2019 will increase by 18
Times, wherein most data can be transmitted by smart phone.
Mass data business brings huge communication pressure to cellular network.Wi-Fi is widely deployed as a kind of
Wireless access technology has become the main access way that user accesses internet.By the way that wireless data traffic load sharing is arrived
Wi-Fi network is to mitigate the plan of the reply of cellular network communication pressure.There is the wireless data of approximately half of (46%) in last year according to statistics
Load transfer is to Wi-Fi network, and by 2019, this number will be added to 54%.In addition will pass through more than the voice communication of half
Wi-Fi network is completed.However, how Wi-Fi realizes two kinds of networks as a kind of wireless access technology different from Cellular Networks
The safety of the Cellular Networks rank of seamless roam and Wi-Fi network is the main problem for currently needing to solve.
The appearance of Hotspot 2.0 mentions to realize the seamless roam of two kinds of networks and guaranteeing the safety of Wi-Fi network
A solution is supplied.Hotspot2.0 is that the one kind proposed by Wi-Fi Alliance aims at mobile network and Wi-Fi network
Between seamless flow switching.This means that user be free to use simultaneously from 3G, 4G network switching to Wi-Fi network
Family does not have to find hot spot manually, inputs authentication to obtain Wi-Fi.And from a network switching to another network when
Time will not be interrupted, and user is even imperceptible.This seamless certification and handover will so that Wi-Fi just like being easy to as cellular network
It uses, and the advantage in consistent user experience and newest Wi-Fi 802.11ac technical network speed is provided.
Hotspot2.0 ensure that the diversity (EAP- of user authentication mode by using a variety of EAP authentication modes simultaneously
SIM, EAP-AKA etc.) and the aerial Cellular Networks level security for transmitting data of WPA2.0Enterprise agreement guarantee.
Hotspot2.0 in beacon and probe response frame by increasing more cells (information element)
To realize automatically selecting and authenticating for network.However, how this obtains relevant information (such as network load, net that cell includes
Network capacity) it does not illustrate.Software defined network (Software Defined Network, SDN) is to realize global network
Perception provides new thinking.SDN is a kind of new network wound proposed by Clean Slate study group, Stanford Univ USA
New architecture, core technology OpenFlow propose control plane by separating network equipment control plane with data surface
It is abstract, realize the flexible control to network flow and the global perception of network.
Summary of the invention
The present invention reduces network access delay for the effectively simplified switching access procedure from Cellular Networks to Wi-Fi network,
It realizes the seamless switching between Wi-Fi and cellular network, provides a kind of new network framework based on SDN and Hotspot2.0
Under user access method.
Specific step is as follows:
Step 1: user terminal enters Hotspot2.0 network's coverage area, each user terminal sends probe by itself
The request of request frame or the end AP periodically send the information that beacon frame obtains current Wi-Fi network.
Step 2: in beacon frame or probe response frame that user terminal is returned according to the end AP
Hotspot2.0indication element cell, judges whether current Wi-Fi network supports Hotspot2.0；If so,
Enter step three；Otherwise nine are entered step；
Step 3: user terminal sends solicited message to the end AP by GAS agreement；
Step 4: Wi-Fi network information is further requested to SDN global controller by openflow agreement in the end AP；
Openflow agreement is the communication protocol between the end AP and SDN global controller；
Wi-Fi network information includes: the load information of network, network capacity information and network home information etc.；SDN is global
Controller software realizes the perception to global network, obtains Wi-Fi network information, and realize the seamless switching of heterogeneous networks.
Step 5: SDN global controller is by current Wi-Fi network Information encapsulation at the frame lattice for meeting openflow agreement
Formula, and it is handed down to each end AP.
Step 6: each end AP parses frame, it is packaged into ANQP protocol frame format, and be handed down to user terminal.
Step 7: each user terminal Configuration network filtering policy according to demand, and current Wi-Fi network information was carried out
Filter；
The network of filtering includes: the network for not meeting related realization standard；The authentication mode of user terminal support is not met
Network；The network of user preference is not met；And the network fallen according to operator in the configured policy filtering of user terminal.
Step 8: user terminal judges the Wi-Fi network after filtering, whether there are also support the network of Hotspot2.0 to deposit
If it does, connection Wi-Fi network is authenticated automatically, and going to step 10；Otherwise, nine are entered step；
Automatic connection Wi-Fi network carries out verification process are as follows: user terminal obtains remaining net by the cell in ANQP frame
The authentication mode that network is supported, comprising: EAP-SIM and EAP-AKA；Automatically the sequence connected are as follows: default connection ownership place operator
Wi-Fi network, the network of other operators of roaming agreement is followed by reached with ownership place operator；
Step 9: user, which inputs username and password by traditional authentication mode, accesses Wi-Fi network.
Conventional authentication mode includes that input username and password is authenticated；
Step 10: authentication information is carried out body by the aaa server that RADIUS is forwarded to ownership by SDN global controller
Part Information Authentication；
Step 11: the message back SDN global controller being proved to be successful, SDN global controller controls NAT, DHCP clothes
Device be engaged in as user terminal distribution address, user terminal is connected to internet.
After user terminal distributes address, eated dishes without rice or wine data encryption using WPA2.0-Enterprise cryptographic protocol to user, so
It is transmitted in internet afterwards.
The present invention has the advantages that
1), the user access method under a kind of new network framework based on SDN and Hotspot2.0, by by SDN skill
Art is in conjunction with Hotspot2.0 technology, so that the information source for the cell that very good solution increases newly in Hotspot2.0 is asked
Topic can preferably guarantee the seamless of Cellular Networks and Wi-Fi network simultaneously because better controlling of the SDN to network itself
Fusion.
2) a kind of, user access method under new network framework based on SDN and Hotspot2.0, takes full advantage of
Hotspot2.0 technology guarantees the safety of Wi-Fi network and the automatic connection of realization Wi-Fi network and automated validation, thus with
Family, which enters Wi-Fi network, will automatically switch, connect, authenticating Hotspot2.0 network, guarantee the seamless connection of user.
3), the user access method under a kind of new network framework based on SDN and Hotspot2.0, SDN technology are answered
With perception of the controller to global network is guaranteed, the information of global network is obtained, to solve 2.0 technical protocol of hotspot
In increase newly cell source, guarantee handoff procedure in obtain required information.
4) a kind of, user access method under new network framework based on SDN and Hotspot2.0 enters
Behind the overlay area of Hotspot2.0 network, user is not necessarily to the safety in worry about network, it is ensured that Wi-Fi network Cellular Networks rank
Safety.
5) a kind of, user access method under new network framework based on SDN and Hotspot2.0, realize Cellular Networks with
The complete fusion of Wi-Fi network makes user be not felt by difference between the two, it is ensured that user is consistent two web experiences
Property.
Detailed description of the invention
Fig. 1 is a kind of new network configuration diagram based on SDN and Hotspot2.0 of the present invention；
Fig. 2 is the user access method process under a kind of new network framework based on SDN and Hotspot2.0 of the present invention
Figure.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
A kind of user access method under the new network framework based on SDN and Hotspot2.0, is realized by SDN technology
Overall situation perception to network, obtains network load, network capacity, the information such as network structure, and with it is new in Hotspot2.0
Cell combines, and user terminal takes the most suitable Wi-Fi network access of suitable policy selection；Simultaneously by SDN technology to complete
The control of office network effectively simplifies the switching access procedure from Cellular Networks to Wi-Fi network, so that network access delay is reduced,
The time that two kinds of networks are spent in IP layers of switching is saved, to reach the target for reducing handover delay, realizes Wi-Fi and Cellular Networks
Seamless switching between network.
Firstly, perception of the SDN global controller software realization to global network, obtains the information of network.Then, SDN is controlled
The relevant information that device processed will acquire is packaged into corresponding frame format according to the communication protocol requirements of controller and AP, and passes through stream
Table is handed down to the end AP.AP will be obtained from the end SDN after frame parsed, and be packaged into ANQP protocol frame format, and by these information
It is handed down to the end UE.Finally, corresponding movement is made according to the cell received in the end UE.
As shown in Figure 1, the new network framework based on SDN and Hotspot2.0, comprising: SDN global controller, Wi-Fi
Network, radius server Verification System, NAT, Dynamic Host Configuration Protocol server and user terminal；
SDN global controller dynamically obtains the state of current Wi-Fi network, and load information, network including network hold
Measure information, network home information etc..Then it is handed down to each end AP after information being packaged, and the authentication information of user is turned
Radius server end is dealt into be authenticated.
Wi-Fi network is by supporting the AP of Hotspot 2.0 to constitute；User terminal is by poll AP or receives Beacon frame
The initial information of Wi-Fi network is obtained, and the deeper information of Wi-Fi network is further obtained by ANQP agreement, from
And certain reference frame is provided for Wi-Fi network selection.
Radius server Verification System, is realized to the safety certification of Hotpsot2.0 terminal, by EAP-SIM and
The support of EAP-AKA authentication mode is realized to the safety certification for supporting SIM card user.
Using WPA2-Enterprise agreement to data encryption of eating dishes without rice or wine, so that it is guaranteed that the safety of data link.
User access method under a kind of new network framework based on SDN and Hotspot2.0, as shown in Fig. 2, specifically
Steps are as follows:
Step 1: user terminal enters Hotspot2.0 network's coverage area, each user terminal sends probe by itself
Request frame or the end AP periodically send the information that beacon frame obtains current Wi-Fi network.
Each user terminal supports 2.0 agreement of Hotspot.
Step 2: in beacon frame or probe response frame that user terminal is returned according to the end AP
Hotspot2.0indication element cell, judges whether current Wi-Fi network supports Hotspot2.0；If so,
Enter step three；Otherwise, and enter step 9；
Step 3: user terminal sends further solicited message to the end AP by GAS agreement；
Support openflow agreement and Hotspot2.0 agreement simultaneously in the end AP；By the end protocol realization AP openflow with
Communication protocol between SDN global controller.Hotspot2.0 agreement includes 802.11u agreement and 802.11i agreement, specific packet
Containing the framework agreement for realizing GAS+ANQP；Realize the agreement of a variety of EAP (Extensive Access protocol) method:
EAP-ESIM and EAP-SIM；And realize WPA2-Enterprise Wireless Encryption Protocol.
Step 4: Wi-Fi network information is further requested to SDN global controller by openflow agreement in the end AP；
Openflow agreement is the communication protocol between the end AP and SDN global controller；
Wi-Fi network information includes: the load information of network, network capacity information and network home information etc.；SDN is global
Controller software realizes the perception to global network, obtains Wi-Fi network information, and realize the seamless switching of heterogeneous networks.
Step 5: SDN global controller is by current Wi-Fi network Information encapsulation at the frame lattice for meeting openflow agreement
Formula, and it is handed down to each end AP.
It is parsed Step 6: each end AP will obtain frame from the end SDN, is packaged into ANQP protocol frame format, and issue flow table
To user terminal.
Step 7: each user terminal Configuration network filtering policy according to demand, and current Wi-Fi network information was carried out
Filter；
The network of filtering includes: non-compliant network；The network of the authentication mode of user terminal support is not met；No
Meet the network of user preference；And the network fallen according to operator in the configured policy filtering of user terminal.
Step 8: user terminal judges the Wi-Fi network after filtering, whether there are also support the network of Hotspot2.0 to deposit
If it does, connection Wi-Fi network is authenticated automatically, and going to step 10；Otherwise, nine are entered step；
There is the network for supporting Hotspot2.0 in user terminal, obtain what rest network was supported by the cell in ANQP frame
Authentication mode, comprising: EAP-SIM and EAP-AKA；Automatically the sequence connected are as follows: the Wi-Fi net of default connection ownership place operator
Network followed by reaches the network of other operators of roaming agreement with ownership place operator；
Step 9: user, which inputs username and password by traditional authentication mode, accesses Wi-Fi network.
If do not have under current Wi-Fi network environment support Hotspot 2.0 network or by filtering policy it
The network of the Hotspot 2.0 of user's use condition is not met afterwards, then user passes through traditional authentication mode (input password)
The Wi-Fi network of Hotspot 2.0 is supported in access manually.
Step 10: authentication information is carried out body by the aaa server that RADIUS is forwarded to ownership by SDN global controller
Part Information Authentication；
Step 11: the message back SDN global controller being proved to be successful, SDN global controller controls NAT, DHCP clothes
Device be engaged in as user terminal distribution address, user terminal is connected to internet.
After user terminal distributes address, eated dishes without rice or wine data encryption using WPA2.0-Enterprise cryptographic protocol to user, so
It is transmitted in internet afterwards.
The present invention realizes the perception to global network, obtains net by developing a set of global controller software based on SDN
The information of network, and realize the seamless switching of heterogeneous networks.
Claims (4)
1. the user access method under a kind of new network framework based on SDN and Hotspot2.0, which is characterized in that specific step
It is rapid as follows:
Step 1: user terminal enters Hotspot2.0 network's coverage area, each user terminal sends probe by itself
The request of request frame or the end AP periodically send the information that beacon frame obtains current Wi-Fi network；
Step 2: the Hotspot2.0 in beacon frame or probe response frame that user terminal is returned according to the end AP
Indication element cell, judges whether current Wi-Fi network supports Hotspot2.0；If so, entering step three；
Otherwise nine are entered step；
Step 3: user terminal sends solicited message to the end AP by GAS agreement；
Support openflow agreement and Hotspot2.0 agreement simultaneously in the end AP；It is complete by the end protocol realization AP openflow and SDN
Communication protocol between office's controller；Hotspot2.0 agreement includes 802.11u agreement and 802.11i agreement, and specific includes real
The framework agreement of existing GAS+ANQP；Realize the agreement of a variety of Extensive Access protocol methods: EAP-ESIM and
EAP-SIM；And realize WPA2-Enterprise Wireless Encryption Protocol；Step 4: the end AP passes through openflow agreement to SDN
Global controller further requests Wi-Fi network information；
Openflow agreement is the communication protocol between the end AP and SDN global controller；
Step 5: SDN global controller by current Wi-Fi network Information encapsulation at the frame format for meeting openflow agreement, and
It is handed down to each end AP；
Step 6: each end AP parses frame, it is packaged into ANQP protocol frame format, and be handed down to user terminal；
Step 7: each user terminal Configuration network filtering policy according to demand, and current Wi-Fi network information is filtered；
Step 8: user terminal judges the Wi-Fi network after filtering, whether there are also the network presence for supporting Hotspot2.0, such as
Fruit exists, and the automatic Wi-Fi network that connects is authenticated, and goes to step 10；Otherwise, nine are entered step；
The automatic connection Wi-Fi network carries out verification process are as follows: user terminal is obtained remaining by the cell in ANQP frame
The authentication mode of network support, comprising: EAP-SIM and EAP-AKA；
Automatically the sequence connected are as follows: the Wi-Fi network of default connection ownership place operator is followed by reached with ownership place operator
The network of other operators of roaming agreement；
Step 9: user, which inputs username and password by traditional authentication mode, accesses Wi-Fi network；
Step 10: authentication information is carried out identity letter by the aaa server that RADIUS is forwarded to ownership by SDN global controller
Breath verifying；
Step 11: the message back SDN global controller being proved to be successful, SDN global controller controls NAT, Dynamic Host Configuration Protocol server
Address is distributed for user terminal, user terminal is connected to internet.
2. the user access method under a kind of new network framework based on SDN and Hotspot2.0 as described in claim 1,
It is characterized in that, Wi-Fi network information described in step 4 includes: the load information of network, network capacity information and network
Attaching information etc.；Perception of the SDN global controller software realization to global network obtains Wi-Fi network information, and realizes not
With the seamless switching of network.
3. the user access method under a kind of new network framework based on SDN and Hotspot2.0 as described in claim 1,
It is characterized in that, screen described in step 7 includes: the network for not meeting related realization standard；User terminal is not met
The network of the authentication mode of support；The network of user preference is not met；And according to operator in the configured plan of user terminal
Skip over the network filtered.
4. the user access method under a kind of new network framework based on SDN and Hotspot2.0 as described in claim 1,
It is characterized in that, after user terminal distributes address, using WPA2.0-Enterprise cryptographic protocol in the step ten one
It eats dishes without rice or wine data encryption to user, is then transmitted in internet.
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| CN201510827984 | 2015-11-25 | ||
| CN2015108279845 | 2015-11-25 |
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| CN107094157A (en) * | 2017-06-22 | 2017-08-25 | 电子科技大学 | A kind of RADIUS safety certifying methods and system based on SDN |
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