CN110380908A - Hierarchical control domain method for switching between based on PMIP agreement under a kind of software defined network environment - Google Patents
Hierarchical control domain method for switching between based on PMIP agreement under a kind of software defined network environment Download PDFInfo
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- CN110380908A CN110380908A CN201910683029.7A CN201910683029A CN110380908A CN 110380908 A CN110380908 A CN 110380908A CN 201910683029 A CN201910683029 A CN 201910683029A CN 110380908 A CN110380908 A CN 110380908A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/044—Network management architectures or arrangements comprising hierarchical management structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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Abstract
The present invention proposes the hierarchical control domain method for switching between based on PMIP agreement under a kind of software defined network environment, the advantages of being intended to through layer architecture combination distributed AC servo system and centerized fusion, while the PMIP mobility control agreement based on network side is used in each network area.It to which delay can be reduced relative to distributed AC servo system, can be more easily extensible relative to centralization, while relative to MIP agreement, without supporting mobile management by the protocol stack for modifying mobile host.
Description
Technical field
The present invention relates to network mobility management domains, and in particular to is assisted under a kind of software defined network environment based on PMIP
The hierarchical control domain method for switching between of view.
Background technique
The data of the Internet transmission are more and more, increasing at present, user to the growths of wireless communication needs increasingly
Strongly.Mobile management problems faced is a lack of flexibility in current network, it is not easy to manage and cost is excessively high.Software definition
The appearance of network (SDN) thought provides new thinking for the mobile management problems faced in traditional network.In order to more preferable
The effective way for such issues that ground adapts to the demand of future network, and SDN promises to be solution.Moreover, with mobile flow
Increase, the switching between different community and different technologies also will increase.Therefore SDN is needed to extend the support between switching domain.
The several benefits of SDN bring can generate significant impact to mobile management.Firstly, since control and Forwarding plane
Decoupling makes to control the characteristic that plane is possessed global network view and is forwarded based on flow table.Secondly, its programmability can add
Compatibility between the neoteric generation of speed and different hardware, while avoiding the great number cost using proprietary hardware.Again, it controls
The centralized management of plane processed, can optimize the performance of whole network, and provide the fine granularity of different stage.
Forwarding device needs make decision to each data packet in traditional network, and this other fine granularity of packet-level can produce
Raw additional delay, still, controller only needs to issue decision, subsequent number to first data packet in grouping in SDN
It all will comply with identical decision according to packet.It can be said that the fine granularity rank that SDN is proposed reduces expense.
Although there are advantages by SDN, there are many challenges to need to pay close attention to.In the research switched between SDN is applied to domain also
It is very limited.After mobile node is moved to another region from a region, how to ensure the ongoing session of user
How continuity carries out effective data handover, and high the problems such as being delayed how is prevented in switching, and there are no unified solution party
Case.And to the framework of different network topologies (such as distributed AC servo system and centerized fusion), also there is different strategies.Relative to
Distributed method, centralization can make delay smaller；And distribution can provide better scalability.Secondly, for each
It is based on which kind of mobility management protocol (such as MIP, PMIP) in network domains, also has different strategies, if MIP is the shifting of Intrusion Detection based on host
Mobility management agreement, needs mobile host to support；PMIP is network-based mobility management protocol, is transparent to host.
Therefore, it is possible to use layer architecture combines both distributed AC servo system and centerized fusion advantage, in control plane
Hierarchical control is carried out using multiple controllers, and in order to keep mobility transparent to host, for being based on PMIP agreement in each domain.
Summary of the invention
The present invention proposes the hierarchical control domain method for switching between based on PMIP agreement under a kind of SDN environment, it is intended to by point
The advantages of layer architecture combination distributed AC servo system and centerized fusion, while the PMIP based on network side is used in each network area
Mobility control agreement.To which delay can be reduced relative to distributed AC servo system, can be more easily extensible relative to centralization, same to phase
For MIP agreement, without supporting mobile management by the protocol stack for modifying mobile host.
Hierarchical control domain method for switching between based on PMIP agreement under a kind of software defined network environment, including following step
It is rapid:
Step 1, switch between domain and occur: mobile node MN is moved to another region from a region, and such as from region, A is moved to area
Domain B；
Step 2, mobile node MN sends route requests (RS) message to the Mobile Access Gateway MAG-B of region B；
Step 3, this RS message (O-RS) is transmitted to the controller B of region B by MAG-B；
Step 4, controller B extracts the identity information of mobile node MN, such as ID from O-RS message, finds in the region of oneself
In B, which was not registered；
Step 5, controller B sends request message DIS-Request to root controller；
Step 6, it after root controller receives the DIS-Request information of controller B, can be searched in the banding cache CBC of oneself
There is the caching independent of mobile node MN；
Step 7, root controller returns to lookup result, while sending update messages to region A, carries out mobile node MN in region A
In information update；
Step 8, controller B sends agent binding update messages PBU to one's respective area, i.e. the local mobile anchor LMA-B of region B；
Step 9, the local mobile anchor LMA-B of region B issues controller B agent binding and replies message PBA；
Step 10, after controller B receives PBA message, tunnel creation message is sent to MAG-B, is established between MAG-B and LMA-B
Tunnel；
Step 11, controller B sends routing reply message O-RA to MAG-B；
Step 12, MAG-B forwards this to reply message (RA) to mobile node MN；
So far, switching is completed.
Further, pass through openflow between the Mobile Access Gateway MAG-B and controller B of region B in the step 3
Agreement is communicated.
Further, the switching in the step 4 in each region is handled by local area domain controller, when being judged as not
It is when switching in domain, into remaining steps.
Further, what the DIS-Request message that controller B is sent in the step 5 included is mobile node MN
Identity ID, it is therefore an objective to which the mobile node MN of this access of inquiry judging is first access network, or is switched between carrying out domain.
Further, the packet in the content in the step 6 in banding cache CBC about this access mobile node MN
Containing its ID, a upper area identification (such as region A), a upper region prefix (such as Pre-A), be currently accessed area identification (such as
Region B).
Further, in the step 7, including as follows step by step:
Lookup result is replied message DIS-Response and sends back to controller B by step 7-1, root controller；
Step 7-2, root controller send update message to the controller A in the previous region of mobile node MN；
Step 7-3, controller A send flow table update message to the access anchor point LMA-A of region A, it is notified to delete about movement
The flow table forwarding entry of node M N.
Further, ID and Shang Yige area of the DIS-Response message comprising this mobile node MN in the step 7-1
In the prefix Pre-A, the step 7-2 and step S7-3 in domain delete LMA-A in about mobile node MN flow table entry be for
Installation prefix A prepares in following LMA-B.
Further, in the step 8 PBU message include the ID of this mobile node MN, a upper region prefix Pre-
A, the prefix Pre-B of current region controller B distribution.
Further, after the LMA-B of region B receives PBU message, two streams about prefix A and prefix B can be installed simultaneously
Table；Since the routing flow table on LMA-A before about mobile node MN has been deleted, carried out with mobile node MN
Session can be routed to LMA-B, then by tunnel between LMA-B and MAG-B, be ultimately routed to mobile node MN；Herein
The node communicated in the process with mobile node MN is not aware that the position of mobile node MN changes, still according to original
First prefix sends data, to keep the connection of communication when switching generation.
Further, after the switching of mobile node MN is completed, when there is new session to arrive, mobile node MN will be used
New prefix Pre-B routed.
The invention has the following advantages: can effectively carry out switching between domain under software defined network environment, use
The combination of layered structure and PMIP agreement, is more easily extensible network, makes net the advantages of combining distributed and centerized fusion
Network possesses lower handover delay and propagation delay time, while without supporting mobility pipe by the protocol stack for modifying mobile host
Reason.
Detailed description of the invention
Fig. 1 is the timing diagram of switching flow of the present invention.
Fig. 2 is the block schematic illustration of software defined network of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings of the specification.
Hierarchical control domain method for switching between based on PMIP agreement under a kind of software defined network environment, including following step
It is rapid:
Step 1, switch between domain and occur: mobile node MN is moved to another region from a region, and such as from region, A is moved to area
Domain B.
Step 2, mobile node MN sends route requests (RS) message to the Mobile Access Gateway MAG-B of region B.
Step 3, this RS message (O-RS) is transmitted to the controller B of region B by MAG-B.
Step 4, controller B extracts the identity information of mobile node MN, such as ID from O-RS message, find oneself
In the B of region, which was not registered.
Step 5, controller B sends request message DIS-Request to root controller.
It step 6, can be in the banding cache CBC of oneself after root controller receives the DIS-Request information of controller B
Search the caching having independent of mobile node MN.
Step 7, root controller returns to lookup result, while sending update messages to region A, carries out mobile node MN in area
Information update in the A of domain.
Step 8, controller B sends agent binding update messages PBU to one's respective area, the i.e. local mobile anchor of region B
LMA-B。
Step 9, the local mobile anchor LMA-B of region B issues controller B agent binding and replies message PBA.
Step 10, after controller B receives PBA message, tunnel creation message is sent to MAG-B, establishes MAG-B and LMA-B
Between tunnel.
Step 11, controller B sends routing reply message O-RA to MAG-B.
Step 12, MAG-B forwards this to reply message (RA) to mobile node MN.
So far, switching is completed.
It is carried out between the Mobile Access Gateway MAG-B and controller B of region B by openflow agreement in the step 3
Communication.
Switching in the step 4 in each region is handled by local area domain controller, is not domain inscribe when being judged as
When changing, into remaining steps.
What the DIS-Request message that controller B is sent in the step 5 included is the identity ID of mobile node MN, mesh
Be mobile node MN of inquiry judging this access be first access network, or switch between carrying out domain.
In content in the step 6 in banding cache CBC about this access mobile node MN information include its ID, on
One area identification (such as region A), a upper region prefix (such as Pre-A), be currently accessed area identification (such as region B).
In the step 7, including as follows step by step:
Lookup result is replied message DIS-Response and sends back to controller B by step 7-1, root controller；
Step 7-2, root controller send update message to the controller A in the previous region of mobile node MN；
Step 7-3, controller A send flow table update message to the access anchor point LMA-A of region A, it is notified to delete about movement
The flow table forwarding entry of node M N.
DIS-Response message includes the ID of this mobile node MN and the prefix in a upper region in the step 7-1
The flow table entry deleted in LMA-A about mobile node MN in Pre-A, the step 7-2 and step S7-3 is in order to following
Prefix A is installed to prepare in LMA-B.
PBU message includes prefix Pre-A, the current region of the ID of this mobile node MN, a upper region in the step 8
The prefix Pre-B of controller B distribution.
After the LMA-B of region B receives PBU message, two flow tables about prefix A and prefix B can be installed simultaneously；Due to it
Routing flow table on preceding LMA-A about mobile node MN has been deleted, and therefore, the session carried out with mobile node MN can road
By then by the tunnel between LMA-B and MAG-B, being ultimately routed to mobile node MN to LMA-B；In the process, it and moves
The node that dynamic node M N is communicated is not aware that the position of mobile node MN changes, and is still sent according to original prefix
Data, to keep the connection of communication when switching generation.
After the switching of mobile node MN is completed, when there is new session to arrive, the new prefix of mobile node MN will be used
Pre-B is routed.
The invention has the following advantages: can effectively carry out switching between domain under software defined network environment, use
The combination of layered structure and PMIP agreement, is more easily extensible network, makes net the advantages of combining distributed and centerized fusion
Network possesses lower handover delay and propagation delay time, while without supporting mobility pipe by the protocol stack for modifying mobile host
Reason.
The foregoing is merely better embodiment of the invention, protection scope of the present invention is not with above embodiment
Limit, as long as those of ordinary skill in the art's equivalent modification or variation made by disclosure according to the present invention, should all be included in power
In the protection scope recorded in sharp claim.
Claims (10)
1. the hierarchical control domain method for switching between under a kind of software defined network environment based on PMIP agreement, it is characterised in that: packet
Include following steps:
Step 1, switch between domain and occur: mobile node MN is moved to another region from a region, and such as from region, A is moved to area
Domain B；
Step 2, mobile node MN sends route requests (RS) message to the Mobile Access Gateway MAG-B of region B；
Step 3, this RS message (O-RS) is transmitted to the controller B of region B by MAG-B；
Step 4, controller B extracts the identity information of mobile node MN, such as ID from O-RS message, finds in the region of oneself
In B, which was not registered；
Step 5, controller B sends request message DIS-Request to root controller；
Step 6, it after root controller receives the DIS-Request information of controller B, can be searched in the banding cache CBC of oneself
There is the caching independent of mobile node MN；
Step 7, root controller returns to lookup result, while sending update messages to region A, carries out mobile node MN in region A
In information update；
Step 8, controller B sends agent binding update messages PBU to one's respective area, i.e. the local mobile anchor LMA-B of region B；
Step 9, the local mobile anchor LMA-B of region B issues controller B agent binding and replies message PBA；
Step 10, after controller B receives PBA message, tunnel creation message is sent to MAG-B, is established between MAG-B and LMA-B
Tunnel；
Step 11, controller B sends routing reply message O-RA to MAG-B；
Step 12, MAG-B forwards this to reply message (RA) to mobile node MN；
So far, switching is completed.
2. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: pass through openflow between the Mobile Access Gateway MAG-B and controller B of region B in the step 3
Agreement is communicated.
3. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: the switching in the step 4 in each region is handled by local area domain controller, when being judged as not
It is when switching in domain, into remaining steps.
4. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: what the DIS-Request message that controller B is sent in the step 5 included is the body of mobile node MN
Part ID, it is therefore an objective to which mobile node MN of this access of inquiry judging is first access network, or is switched between carrying out domain.
5. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: the packet in the content in the step 6 in banding cache CBC about this access mobile node MN
Containing its ID, a upper area identification (such as region A), a upper region prefix (such as Pre-A), be currently accessed area identification (such as
Region B).
6. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: in the step 7, including as follows step by step:
Lookup result is replied message DIS-Response and sends back to controller B by step 7-1, root controller；
Step 7-2, root controller send update message to the controller A in the previous region of mobile node MN；
Step 7-3, controller A send flow table update message to the access anchor point LMA-A of region A, it is notified to delete about movement
The flow table forwarding entry of node M N.
7. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 6
Method, it is characterised in that: ID of the DIS-Response message comprising this mobile node MN and a upper region in the step 7-1
Prefix Pre-A, the step 7-2 and step S7-3 in delete LMA-A in about mobile node MN flow table entry be in order to
Below prefix A is installed in LMA-B to prepare.
8. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: in the step 8 PBU message include the ID of this mobile node MN, a upper region prefix Pre-A,
The prefix Pre-B of current region controller B distribution.
9. switching between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Method, it is characterised in that: after the LMA-B of region B receives PBU message, two streams about prefix A and prefix B can be installed simultaneously
Table；Since the routing flow table on LMA-A before about mobile node MN has been deleted, carried out with mobile node MN
Session can be routed to LMA-B, then by tunnel between LMA-B and MAG-B, be ultimately routed to mobile node MN；Herein
The node communicated in the process with mobile node MN is not aware that the position of mobile node MN changes, still according to original
First prefix sends data, to keep the connection of communication when switching generation.
10. being cut between the hierarchical control domain based on PMIP agreement under a kind of software defined network environment according to claim 1
Change method, it is characterised in that: after the switching of mobile node MN is completed, when there is new session to arrive, mobile node will be used
The new prefix Pre-B of MN is routed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152440A (en) * | 2013-01-30 | 2013-06-12 | 北京天地互连信息技术有限公司 | Implement method of proxy mobile internet protocol version 6 (PMIP v 6) in evolution grouping system |
| EP2887733A1 (en) * | 2013-12-20 | 2015-06-24 | NTT DoCoMo, Inc. | Mobility for mobility anchors |
| CN108882323A (en) * | 2018-07-05 | 2018-11-23 | 华南理工大学 | A kind of IPv6 Network Mobility node method for handover control based on SDN |
-
2019
- 2019-07-26 CN CN201910683029.7A patent/CN110380908A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152440A (en) * | 2013-01-30 | 2013-06-12 | 北京天地互连信息技术有限公司 | Implement method of proxy mobile internet protocol version 6 (PMIP v 6) in evolution grouping system |
| EP2887733A1 (en) * | 2013-12-20 | 2015-06-24 | NTT DoCoMo, Inc. | Mobility for mobility anchors |
| CN108882323A (en) * | 2018-07-05 | 2018-11-23 | 华南理工大学 | A kind of IPv6 Network Mobility node method for handover control based on SDN |
Non-Patent Citations (2)
| Title |
|---|
| SŁAWOMIR KUKLIŃSKI等: "Handover Management in SDN-based Mobile Networks", 《2014 IEEE GLOBECOM WORKSHOPS (GC WKSHPS)》 * |
| SYED M. RAZA等: "On Demand Inter Domain Mobility in SDN based Proxy Mobile IPv6", 《2017 INTERNATIONAL CONFERENCE ON INFORMATION NETWORKING (ICOIN)》 * |
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