CN107040971A - Route implementation method and mobile content distribution network node device - Google Patents
Route implementation method and mobile content distribution network node device Download PDFInfo
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- CN107040971A CN107040971A CN201610077508.0A CN201610077508A CN107040971A CN 107040971 A CN107040971 A CN 107040971A CN 201610077508 A CN201610077508 A CN 201610077508A CN 107040971 A CN107040971 A CN 107040971A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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Abstract
The invention discloses a kind of route implementation method, methods described includes：MCDN nodes receive the first request bag, and detect first request bag whether be preset kind content requests bag；When determining the content requests bag that first request bag is preset kind, content requests key message in first request bag is extracted；When determining that first request bag meets the first authorising conditional based on the content requests key message and default UAT, the corresponding precedence information of first request bag is obtained；Judge whether first request bag meets CCN forwarding conditions based on the precedence information and default CCN forwarding strategies；When determining that first request bag meets the CCN forwardings condition, CCN forward process is carried out to first request bag based on CCN communication patterns.The present invention further simultaneously discloses a kind of MCDN node devices.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of route implementation method and mobile content distribution network
(MCDN, Mobile Content Distribution Network) node device.
Background technology
In order to tackle the challenge of forth generation mobile communication (4G) flow growth, in core net, wireless network sidepiece
Content distributing network (CDN, Content Distribution Network) service node towards wireless network is affixed one's name to,
That is MCDN (Mobile CDN) node, new thinking is provided to alleviate core net flow pressure.Such as Fig. 1
MCDN configuration diagrams are shown, wherein, the edge access layer is base station group, MCDN nodes
Base station side is deployed in, based on content center network (CCN, Content-centric Networking) communication mould
Formula enters row data communication.
At present, in the MCDN frameworks and correlation function scheme, there is no a kind of route implementing scheme can
User's request is managed with the authorization conditions based on user equipment (UE, User Equipment).
The content of the invention
In view of this, the embodiment of the present invention is expected to provide a kind of route implementation method and MCDN node devices,
The problem of prior art is present is solve at least, Internet resources can be effectively utilized, QoS of customer is improved.
To reach above-mentioned purpose, what the technical scheme of the embodiment of the present invention was realized in：
The embodiments of the invention provide a kind of route implementation method, methods described includes：
MCDN nodes receive the first request bag, and detect whether first request bag is the interior of preset kind
Hold request bag；
When determining the content requests bag that first request bag is preset kind, extract in first request bag
Content requests key message；
Determine that first request bag meets first based on the content requests key message and default UAT
During authorising conditional, the corresponding precedence information of first request bag is obtained；
Judge described first based on the precedence information and default content center network CCN forwarding strategies
Whether request bag meets CCN forwarding conditions；
When determining that first request bag meets the CCN forwardings condition, based on CCN communication patterns to institute
State the first request bag and carry out CCN forward process.
In such scheme, the content requests bag of the preset kind is the content requests bag of CCN types；
Content requests key message in extraction first request bag, including：
Extract user's mark and the content name prefix in first request bag.
It is described to determine described first based on the content requests key message and default UAT in such scheme
Request bag meets the first authorising conditional, including：
By the corresponding user's mark of first request bag and content name prefix respectively with being stored in the UAT
User's mark and corresponding content name prefix matched, when the match is successful, determine that described first asks
Bag meets the first authorising conditional.
It is described to judge described the based on the precedence information and default CCN forwarding strategies in such scheme
Whether one request bag meets CCN forwarding conditions, including：
Judge whether the corresponding priority of first request bag is not less than the default first request bag correspondence
Standard priority, if the corresponding priority of first request bag be not less than it is default it is described first request
Corresponding standard priority is wrapped, determines that first request bag meets CCN forwarding conditions；Otherwise, it determines institute
State the first request bag and be unsatisfactory for CCN forwarding conditions.
In such scheme, methods described also includes：
Receive authorized user message and corresponding standard priority that software defined network SDN controllers are sent；
The UAT is updated based on the authorized user message and corresponding standard priority；
Wherein, the authorized user message is the SDN controllers base after the completion of HSS is authenticated to UE
Acquired in the authorized user message table that the corresponding IDs of the UE are stored from itself.
The embodiment of the present invention additionally provides a kind of MCDN node devices, and the MCDN node devices include：
Detection module, extraction module, determining module, judge module and processing module；Wherein,
The detection module, for receiving the first request bag, and detects whether first request bag is default
The content requests bag of type；
The extraction module, for determine first request bag be preset kind content requests bag when, carry
Take content requests key message in first request bag；
The determining module, for determining described based on the content requests key message and default UAT
When one request bag meets the first authorising conditional, the corresponding precedence information of first request bag is obtained；
The judge module, for judging described based on the precedence information and default CCN forwarding strategies
Whether the first request bag meets CCN forwarding conditions；
The processing module, during for determining that first request bag meets the CCN forwardings condition, is based on
CCN communication patterns carry out CCN forward process to first request bag.
In such scheme, the content requests bag of the preset kind is the content requests bag of CCN types；
The extraction module, is additionally operable to extract user's mark and content name prefix in first request bag.
In such scheme, the determining module, be additionally operable to first request bag corresponding user mark and
Content name prefix is matched with the user's mark stored in the UAT and corresponding content name prefix respectively,
When the match is successful, determine that first request bag meets the first authorising conditional.
In such scheme, the judge module is additionally operable to judge that the corresponding priority of first request bag is
It is no to be not less than the corresponding standard priority of default first request bag, if first request bag correspondence
Priority be not less than the corresponding standard priority of default first request bag, determine it is described first request
Bag meets CCN forwarding conditions；Otherwise, it determines first request bag is unsatisfactory for CCN forwarding conditions.
In such scheme, the MCDN node devices also include update module, for receiving SDN controls
Authorized user message and corresponding standard priority that device is sent, based on the authorized user message and corresponding
Standard priority updates the UAT；
Wherein, the authorized user message is the SDN controllers base after the completion of HSS is authenticated to UE
Acquired in the authorized user message table that the corresponding IDs of the UE are stored from itself.
Route implementation method and MCDN node devices that the embodiment of the present invention is provided, MCDN nodes connect
Receive the first request bag, and detect first request bag whether be preset kind content requests bag；Determine institute
When stating the content requests bag that the first request bag is preset kind, extract content requests in first request bag and close
Key information；Determine that first request bag meets based on the content requests key message and default UAT
During one authorising conditional, the corresponding precedence information of first request bag is obtained；Based on the precedence information
And default CCN forwarding strategies judge whether first request bag meets CCN forwarding conditions；Determine institute
When stating the first request bag and meeting CCN forwarding condition, asked based on CCN communication patterns described first
Bag carries out CCN forward process.In this way, authorization conditions pair that can be based on default user's authorization list and user
User's request bag carries out routing management, can effectively utilize Internet resources, improves QoS of customer, and
It can solve under the network transmission efficiency as caused by node content dynamic, node state change, Link State
The problems such as drop.
Brief description of the drawings
Fig. 1 is MCDN configuration diagrams one；
Fig. 2 is interest bag and packet structure composition schematic diagram；
Fig. 3 is CS, PIT and FIB form schematic diagram；
Fig. 4 is the schematic flow sheet of CCN node processing interest bags of the embodiment of the present invention；
Fig. 5 is the schematic flow sheet of CCN node processing packets of the embodiment of the present invention；
Fig. 6 is MCDN of embodiment of the present invention configuration diagrams two；
Fig. 7 is route implementation method of embodiment of the present invention schematic flow sheet one；
Fig. 8 is UAT schematic diagrames of the embodiment of the present invention；
Fig. 9 is route implementation method of embodiment of the present invention schematic flow sheet two；
Figure 10 is route implementation method of embodiment of the present invention schematic flow sheet three；
Figure 11 is the schematic flow sheet that MCDN of embodiment of the present invention nodes obtain authorized user message；
Figure 12 is the flow that MCDN of embodiment of the present invention nodes carry out CCN forward process to the first request bag
Schematic diagram；
Figure 13 is the composition structural representation of MCDN node devices of the embodiment of the present invention.
Embodiment
CCN uses the communication pattern centered on content (information) to build network, relieves content and position
Coupled relation between putting, which platform server user, which need not be concerned about from, obtains content, and only needs concerned about content
Itself, this is one kind from " where " to the transformation of " what ".In communication process, all network sections
Point can be route and forwarded based on the name of content, and the content for being transferred through itself is cached,
Subsequently to there is the user of identical content requests directly to obtain content from local cache.
The message transmitted in the content in heart network includes two kinds：Interest bag (Interest packet) and data
Wrap (Data packet)；The interest bag and data packet group are shown into such as Fig. 2.Interest bag is by content requests user
Send, while carrying requested content name prefix, packet is corresponding with interest bag, carry requested
Content-data, the interest bag that user sends is asked for response contents.
Each CCN nodes safeguard that three are used to record node content and instruct processing interest bag and packet
Table, respectively cache storehouse (CS, Cache Store), pending required list (PIT, Pending Interest Table)
And forwarding information table (FIB, Forwarding Information Base)；Wherein, CS is used to cache by being somebody's turn to do
The content-data of CCN nodes, in order to after this sign off, the data cached still can be
Other user services for having an identical content requests；PIT is used to record the interest package informatin by the node, with
It is easy to packet backtracking；FIB and transmission control protocol/Internet Protocol (TCP/IP,
Transmission Control Protocol/Internet Protocol) the IP route table function in network is similar,
Forwarding information for providing next-hop；Described CS, PIT and FIB form are as shown in Figure 3.
The flows of CCN node processing interest bags is as shown in figure 4, when a node receives interest bag, first
CS can be matched, if buffered requested content (cache hit) in CS, directly along interest bag
Arrival path forwarding content-data and abandon the interest bag；If there is no requested content (caching in CS
It is miss), then further matching PIT, if having in PIT with interest bag identical content name prefix, then
Increase the arrival interface of interest bag in PIT respective entries, and abandon interest bag；If PIT does not have yet
Matching, then search FIB, and forwarding interest bag to all appropriate ports, (the arrival interface of interest bag no longer turns
Hair), and in PIT record interest bag arrival interface；If FIB does not also match entry, abandon emerging
Interest bag is forwarded to default interface.
Compared with interest bag, the processing procedure of packet is relatively easy, as shown in figure 5, when node receives number
During according to bag, longest prefix match can be carried out to the content name field of packet, CS be matched first, if phase
Same is data cached, then directly abandons the packet；If not provided, continuing and the entries match in PIT.
If matching PIT, interest bag is forwarded to corresponding port, and by data pack buffer to CS, if in PIT
The entry not matched, direct packet discard.
The embodiment of the present invention be based on MCDN frameworks shown in Fig. 6, MCDN dispose in a base station, base station it
Between connected by X2 interface, in addition to original interface function, increase data forwarding function, and can between base station
To enter row data communication by the communication pattern based on content, content service is provided the user with；Upper strata is used
SDN controllers are managed to lower edge node, and there is provided part net to third party user's open interface
Network administration authority.Definition authorized user is just allowed to use MCDN and serviced, software defined network (SDN,
Software Defined Network) set in controller authorization message table to record authorized user message.
In embodiments of the present invention, MCDN nodes receive the first request bag, and detect first request bag
Whether be preset kind content requests bag；If first request bag is the content requests bag of preset kind,
Extract content requests key message in first request bag；Based on the content requests key message and default
User's authorization list UAT when determining that first request bag meets the first authorising conditional, obtaining described first please
Seek the corresponding precedence information of bag；Forwarded based on the precedence information and default content center network CCN
Strategy judges whether first request bag meets CCN forwarding conditions；Determine that first request bag meets institute
When stating CCN forwarding conditions, first request bag is carried out at CCN forwardings based on CCN communication patterns
Reason.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
Embodiment one
Fig. 7 is route implementation method schematic flow sheet of the embodiment of the present invention, as shown in fig. 7, the present invention is implemented
Example route implementation method includes：
Step 701：MCDN nodes receive the first request bag, and detect whether first request bag is pre-
If the content requests bag of type.
Here, the MCDN nodes are located at base station eNodeB, and the content requests bag of the preset kind can
Think the content requests bag of CCN types.
In one embodiment, MCDN nodes are by detecting that the head-coating structure of first request bag judges described
First request bag whether be preset kind content requests bag, detection obtain as described in the first request bag packet header
Including content name part, it is known that first request bag is the content requests bag of CCN types.
Step 702：When determining the content requests bag that first request bag is preset kind, described the is extracted
Content requests key message in one request bag.
Here, the content requests key message at least includes user's mark and content name prefix；
Wherein, user mark is a kind of globally unique mark, the uniqueness and forever for representing user
Long property, can be User Identity (ID, Identification)；
The content name prefix, for representing that a certain user can initiate the content of request by MCDN, this
Content can carry out varigrained matching according to the prefix of different length, can be a certain content provider
All the elements or the available a certain class content of a certain content provider or a null value,
At this time illustrating all the elements request of the user can be met by MCDN services, third party's business
Manager can realize this customizable authorization function by the administration interface of SDN controllers.
Based on embodiment of the present invention, in actual applications, it is not pre- that detection obtains first request bag
If during the content requests bag of type, directly reporting first request bag to SDN controllers.
Step 703：First request bag is determined based on the content requests key message and default UAT
When meeting the first authorising conditional, the corresponding precedence information of first request bag is obtained.
Here, the corresponding precedence information of first request bag is the user couple for sending first request bag
The precedence information answered, priority A is limit priority, is reduced step by step downwards with this, it is considered to when node is negative
When carrying overweight, the high request of priority may be selected and is serviced, third party manager can also be excellent by combining
Diversified customization service is realized in first level configuration；
Increase user's authorization list (UAT, a User in the eNodeB nodes of edge access layer
Authorization Table), the authorization message for recording the user that the node is connect passes through the index of the table
The content requests of authorized user, which can be realized, to be met by MCDN services；Fig. 8 show this hair
Bright embodiment UAT schematic diagrames, wherein, the standard priority is used to define the minimum preferential of the content requests
Level, i.e., only User Priority just can service satisfaction, the attribute more than the priority of the request by MCDN
It can be updated by third party manager by SDN controllers.
In actual applications, it is described to determine described the based on the content requests key message and default UAT
One request bag meets the first authorising conditional, including：
By first request bag corresponding user mark, i.e. ID and content name prefix respectively with it is described
The user's mark and corresponding content name prefix stored in UAT is matched, when the match is successful, i.e. user
ID and content name prefix are matched simultaneously, determine that first request bag meets the first authorising conditional；
When it fails to match, determine that first request bag does not meet the first authorising conditional, directly report described
First request bag is to SDN controllers.
Step 704：First request is judged based on the precedence information and default CCN forwarding strategies
Whether bag meets CCN forwarding conditions.
In one embodiment, aforesaid operations are specifically included：Judging the corresponding priority of first request bag is
It is no to be not less than the corresponding standard priority of default first request bag, namely judge first request bag
Whether corresponding priority is not less than the corresponding lowest priority of request content of first request bag, if
It is preferential that the corresponding priority of first request bag is not less than the corresponding standard of default first request bag
Level, determines that first request bag meets CCN forwarding conditions；Otherwise, it determines first request bag is discontented
Sufficient CCN forwards condition.
Step 705：It is logical based on CCN when determining that first request bag meets the CCN forwardings condition
Letter pattern carries out CCN forward process to first request bag.
Here, it is first request when it is determined that first request bag meets the CCN forwardings condition
Wrap corresponding user and MCDN services be provided, will first request bag base of standard is carried out as interest bag
In the interest bag handling process of CCN communication patterns, specifically include：First request bag is matched first
CS, if buffered requested content (cache hit) in CS, directly along first request bag
Arrival path forwarding content-data and abandon the interest bag；If there is no requested content (caching in CS
It is miss), then PIT is further matched, if having in PIT and the first request bag identical content name
Prefix, then increase the arrival interface of first request bag in PIT respective entries, and abandons described
One request bag；If PIT is not also matched, FIB is searched, to all appropriate ports forwarding described the
One request bag (the arrival interface of first request bag is no longer forwarded), and record in PIT described first please
Seek the arrival interface of bag；If FIB does not also match entry, first request bag or forwarding are abandoned
To default interface.
Embodiment two
Fig. 9 is route implementation method schematic flow sheet of the embodiment of the present invention, as shown in figure 9, the present invention is implemented
Example route implementation method includes：
Step 901：MCDN nodes receive the first request bag, and detect whether first request bag is pre-
If the content requests bag of type, if it is, performing step 902；If it is not, performing step 906.
Here, the MCDN nodes are located at base station eNodeB, and the content requests bag of the preset kind can
Think the content requests bag of CCN types.
In embodiments of the present invention, the content requests bag of the preset kind is the content requests of CCN types
Bag.
Step 902：Extract content requests key message in first request bag.
In embodiments of the present invention, the content requests key message at least includes before ID and content name
Sew.
Step 903：First request bag is judged based on the content requests key message and default UAT
Whether meet the first authorising conditional, if met, perform step 904；If do not met, step 906 is performed.
Here, the UAT is arranged on the MCDN nodes, for recording the user that the node is connect
Authorization message, as shown in figure 8, wherein, the standard priority is used to define the minimum of the content requests
Priority, i.e., only User Priority just can service satisfaction more than the priority of the request by MCDN, should
Attribute can be updated by third party manager by SDN controllers.
In embodiments of the present invention, by the corresponding ID of first request bag and content name prefix respectively with
The ID and corresponding content name prefix stored in the UAT is matched, when the match is successful, i.e.,
ID and content name prefix are matched simultaneously, determine that first request bag meets the first authorising conditional；Otherwise,
Determine that first request bag does not meet the first authorising conditional.
Step 904：The corresponding priority of first request bag is obtained, and based on the priority and is preset
CCN forwarding strategies judge first request bag whether meet CCN forwarding condition, if it is satisfied, holding
Row step 905；If be unsatisfactory for, step 906 is performed.
In embodiments of the present invention, the default CCN forwarding strategies are the corresponding priority of the user,
I.e. the corresponding priority of request bag is not less than the corresponding standard priority of request content；
That is, aforesaid operations are specifically included：Judge whether the corresponding priority of first request bag is not less than
The corresponding standard priority of first request bag described in UAT, namely judge that first request bag is corresponding excellent
Whether first level is not less than the corresponding lowest priority of request content of first request bag, if described first
The corresponding priority of request bag is not less than the corresponding standard priority of default first request bag, determines institute
State the first request bag and meet CCN forwarding conditions；Turn otherwise, it determines first request bag is unsatisfactory for CCN
Clockwork spring part.
Step 905：CCN forward process is carried out to first request bag based on CCN communication patterns.
When it is determined that first request bag meets CCN forwarding condition, using first request bag as
Interest bag carries out the interest bag handling process based on CCN communication patterns of standard, specifically includes：By described
One request bag matches CS first, if buffered requested content in CS, directly along described first
The arrival path forwarding content-data of request bag simultaneously abandons the interest bag；If there is no requested content in CS,
Then further matching PIT, if having in PIT with the first request bag identical content name prefix, then
Increase the arrival interface of first request bag in PIT respective entries, and abandon first request bag；
If PIT is not also matched, FIB is searched, first request bag is forwarded to all appropriate ports,
And the arrival interface of first request bag is recorded in PIT；If FIB does not also match entry, lose
Abandon first request bag or be forwarded to default interface.
Step 906：First request bag is directly reported to SDN controllers.
Embodiment three
Figure 10 is route implementation method schematic flow sheet of the embodiment of the present invention, as shown in Figure 10, and the present invention is real
Applying a route implementation method includes：
Step 1001：MCDN nodes receive the first request bag, and whether judge first request bag is CCN
The content requests bag of type, if it is, performing step 1002；If it is not, performing step 1005.
In embodiments of the present invention, MCDN nodes are by detecting that the head-coating structure of first request bag judges
First request bag whether be preset kind content requests bag, as described in being obtained detection the first request bag
Packet header includes content name part, it is known that first request bag is the content requests bag of CCN types.
Step 1002：The ID and content name prefix in first request bag are extracted, by the user
ID and content name prefix are matched with the ID stored in UAT and corresponding content name prefix respectively,
Judge whether matching succeeds, if the match is successful, perform step 1003；If it fails to match, step is performed
1005。
Here, it is described the match is successful i.e. ID and content name prefix the match is successful simultaneously.
The UAT is used for the authorized user message for recording MCDN nodes reception, and the user authorizes letter
Breath at least includes：User's mark, content name prefix, User Priority and corresponding standard priority, pass through
The index of the table can realize that the content requests of authorized user can be met by MCDN services, such as scheme
Shown in 8, wherein, the standard priority is used for the lowest priority for defining the content requests, i.e., only use
The priority that family priority is more than the request just can service satisfaction by MCDN, and the attribute can be managed by third party
Reason person is updated by SDN controllers.
Based on embodiment of the present invention, in actual applications, the MCDN nodes obtain user and authorize letter
The process of breath realizes that specific operation process is as shown in figure 11 in user access network attaching process, including：
Step 1：UE sends attach request to eNodeB.
Step 2：ENodeB forwards the attach request to give SDN controllers.
Step 3：SDN controllers send ID and asked to UE.
Step 4：User UE sends ID and responds to the SDN controllers.
Here, the ID responses carry ID.
Step 5：Home signature user server (HSS, Home Subscriber Server) is completed to institute
State UE authentication.
Step 6：Based on the ID, SDN controllers are extracted in the authorized user message table of itself storage
Authorized user message.
In one embodiment, the authorized user message table is as shown in the table：
| User identifies | Content name prefix | User Priority |
| UIDa | CP1/C1/... | A |
| UIDa | CP2/... | B |
| UIDb | CP1/C1/... | B |
Step 7：SDN controllers send the authorized user message and the corresponding standard priority of content to institute
State eNodeB.
Step 8：ENodeB is based on the authorized user message and corresponding standard priority updates the UAT.
Wherein, participate in information exchange with SDN controllers is the mobile management reality of eNodeB in house softwares
Body (MME, Mobility Management Entity) module.
Step 1003：The corresponding priority of first request bag is obtained, and judges the priority whether not
Standard priority corresponding with the content name prefix less than in the UAT, if it is, performing step 904；
Otherwise, step 905 is performed.
Step 1004：CCN forward process is carried out to first request bag based on CCN communication patterns.
In one embodiment, it is described that CCN forwardings are carried out to first request bag based on CCN communication patterns
The specific operation process of processing is as shown in figure 12, including：
Step a：Judge the content that first request bag is asked whether is cached with CS, if not provided, holding
Row step b；If so, performing step e.
Step b：Judge whether to be stored with PIT with first request bag in content name prefix identical
Hold name prefix, if not provided, performing step c；If so, performing step f.
Step c：Judge the forwarding port corresponding with first request bag that whether is stored with FIB, if
Have, perform step d；If not provided, performing step g.
Step d：First request bag is forwarded to all appropriate ports, and records the port to described
PIT。
Step e：Arrival path according to first request bag returns to corresponding content-data.
Step f：Increase the arrival interface of first request bag in the PIT, and abandon described first and ask
Seek bag.
Step g：Abandon first request bag.
Step 1005：First request bag is directly reported to SDN controllers.
Example IV
Figure 13 is the composition structural representation of MCDN node devices of the embodiment of the present invention, the MCDN sections
Point device is located in base station eNodeB, as shown in figure 4, the group of MCDN node devices of the embodiment of the present invention
Into including：Detection module 131, extraction module 132, determining module 133, judge module 134 and processing mould
Block 135；Wherein,
The detection module 131, for receiving the first request bag, and detect first request bag whether be
The content requests bag of preset kind；
The extraction module 132, for determine first request bag be preset kind content requests bag when,
Extract content requests key message in first request bag；
The determining module 133, for determining institute based on the content requests key message and default UAT
When stating the first request bag and meeting the first authorising conditional, the corresponding precedence information of first request bag is obtained；
The judge module 134, for based on the precedence information and the judgement of default CCN forwarding strategies
Whether first request bag meets CCN forwarding conditions；
The processing module 135, during for determining that first request bag meets the CCN forwardings condition,
CCN forward process is carried out to first request bag based on CCN communication patterns.
In one embodiment, the content requests bag of the preset kind is the content requests bag of CCN types；
The extraction module 132, is additionally operable to extract before user's mark and the content name in first request bag
Sew.
In one embodiment, the determining module 133, is additionally operable to the corresponding user of first request bag
Mark and content name prefix are entered with the user's mark stored in the UAT and corresponding content name prefix respectively
Row matching, when the match is successful, determines that first request bag meets the first authorising conditional.
In one embodiment, the judge module 134, is additionally operable to judge that first request bag is corresponding excellent
Whether first level is not less than the corresponding standard priority of default first request bag, if first request
Wrap corresponding priority and be not less than the corresponding standard priority of default first request bag, determine described
One request bag meets CCN forwarding conditions；Otherwise, it determines first request bag is unsatisfactory for CCN forwarding bars
Part.
In one embodiment, the MCDN node devices also include update module 136, for receiving SDN
Authorized user message and corresponding standard priority that controller is sent, based on the authorized user message and right
The standard priority answered updates the UAT；
Wherein, the authorized user message is the SDN controllers base after the completion of HSS is authenticated to UE
Acquired in the authorized user message table that the corresponding IDs of the UE are stored from itself.
In embodiments of the present invention, in the MCDN node devices detection module 131, extraction module 132,
Determining module 133, judge module 134, processing module 135 and update module 136 can be by terminal or services
In device central processing unit (CPU, Central Processing Unit) or digital signal processor (DSP,
Digital Signal Processor) or field programmable gate array (FPGA, Field Programmable Gate
Array) or integrated circuit (ASIC, Application Specific Integrated Circuit) realize.
It need to be noted that be：Above is referred to the description of MCDN node devices, it is with above method description
Similar, the beneficial effect with method is described, and is not repeated.For MCDN node devices of the present invention
The ins and outs not disclosed in embodiment, refer to the description of the inventive method embodiment.
Described above, only present pre-ferred embodiments are not intended to limit the scope of the present invention.
Claims (10)
1. a kind of route implementation method, it is characterised in that methods described includes：
Mobile content distribution network MCDN nodes receive the first request bag, and detect that first request bag is
The no content requests bag for preset kind；
When determining the content requests bag that first request bag is preset kind, extract in first request bag
Content requests key message；
First request is determined based on the content requests key message and default user's authorization list UAT
When bag meets the first authorising conditional, the corresponding precedence information of first request bag is obtained；
Judge described first based on the precedence information and default content center network CCN forwarding strategies
Whether request bag meets CCN forwarding conditions；
When determining that first request bag meets the CCN forwardings condition, based on CCN communication patterns to institute
State the first request bag and carry out CCN forward process.
2. method according to claim 1, it is characterised in that the content requests bag of the preset kind is
The content requests bag of CCN types；
Content requests key message in extraction first request bag, including：
Extract user's mark and the content name prefix in first request bag.
3. method according to claim 2, it is characterised in that described based on content requests key letter
Breath and default UAT determine that first request bag meets the first authorising conditional, including：
By the corresponding user's mark of first request bag and content name prefix respectively with being stored in the UAT
User's mark and corresponding content name prefix matched, when the match is successful, determine that described first asks
Bag meets the first authorising conditional.
4. method according to claim 1 or claim 2, it is characterised in that described to be based on the precedence information
And default CCN forwarding strategies judge whether first request bag meets CCN forwarding conditions, including：
Judge whether the corresponding priority of first request bag is not less than the default first request bag correspondence
Standard priority, if the corresponding priority of first request bag be not less than it is default it is described first request
Corresponding standard priority is wrapped, determines that first request bag meets CCN forwarding conditions；Otherwise, it determines institute
State the first request bag and be unsatisfactory for CCN forwarding conditions.
5. method according to claim 1 or claim 2, it is characterised in that methods described also includes：
Receive authorized user message and corresponding standard priority that software defined network SDN controllers are sent；
The UAT is updated based on the authorized user message and corresponding standard priority；
Wherein, the authorized user message is that home signature user server HSS is authenticated to user equipment (UE)
After the completion of, the SDN controllers are authorized based on the corresponding IDs of the UE from the user itself stored
Acquired in information table.
6. a kind of MCDN node devices, it is characterised in that the MCDN node devices include：Detection
Module, extraction module, determining module, judge module and processing module；Wherein,
The detection module, for receiving the first request bag, and detects whether first request bag is default
The content requests bag of type；
The extraction module, for determine first request bag be preset kind content requests bag when, carry
Take content requests key message in first request bag；
The determining module, for determining described based on the content requests key message and default UAT
When one request bag meets the first authorising conditional, the corresponding precedence information of first request bag is obtained；
The judge module, for judging described based on the precedence information and default CCN forwarding strategies
Whether the first request bag meets CCN forwarding conditions；
The processing module, during for determining that first request bag meets the CCN forwardings condition, is based on
CCN communication patterns carry out CCN forward process to first request bag.
7. MCDN node devices according to claim 6, it is characterised in that the preset kind
Content requests bag is the content requests bag of CCN types；
The extraction module, is additionally operable to extract user's mark and content name prefix in first request bag.
8. MCDN node devices according to claim 7, it is characterised in that the determining module,
It is additionally operable to the corresponding user's mark of first request bag and content name prefix respectively with being deposited in the UAT
The user's mark and corresponding content name prefix of storage are matched, when the match is successful, determine that described first please
Bag is asked to meet the first authorising conditional.
9. the MCDN node devices according to claim 6 or 7, it is characterised in that the judgement mould
Block, is additionally operable to judge whether the corresponding priority of first request bag is not less than default first request
Corresponding standard priority is wrapped, if the corresponding priority of first request bag is not less than default described
The corresponding standard priority of one request bag, determines that first request bag meets CCN forwarding conditions；Otherwise,
Determine that first request bag is unsatisfactory for CCN forwarding conditions.
10. the MCDN node devices according to claim 6 or 7, it is characterised in that the MCDN
Node device also includes update module, the authorized user message and corresponding for receiving the transmission of SDN controllers
Standard priority, the UAT is updated based on the authorized user message and corresponding standard priority；
Wherein, the authorized user message is the SDN controllers base after the completion of HSS is authenticated to UE
Acquired in the authorized user message table that the corresponding IDs of the UE are stored from itself.
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