CN109561141A - A kind of selection method and equipment of CDN node - Google Patents
A kind of selection method and equipment of CDN node Download PDFInfo
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- CN109561141A CN109561141A CN201811391682.8A CN201811391682A CN109561141A CN 109561141 A CN109561141 A CN 109561141A CN 201811391682 A CN201811391682 A CN 201811391682A CN 109561141 A CN109561141 A CN 109561141A
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- mec server
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- balancing device
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1031—Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1029—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses a kind of selection method of CDN node and equipment, are related to the communications field, realize and select edge C DN node for high-priority users, to reduce business access time delay.The specific scheme is that global load balancing device receives the mark of the DNS request that MEC server is sent and terminal, target external CDN node is determined according to preset rules and DNS request, and the IP address of target external CDN node is sent to MEC server, when including the mark of terminal in the determining high priority logo collection prestored, it sends to MEC server for applying for the solicitation message using edge C DN node, receives the response message using edge C DN node that MEC server is sent.During the embodiment of the present invention is used to select CDN node for terminal.
Description
Technical field
The present embodiments relate to the communications field more particularly to a kind of content distributing network (Content Delivery
Network, CDN) node selection method and equipment.
Background technique
With the development of mobile Internet business and network technology, mobile edge calculations (Mobile Edge
Computing, MEC) framework starts to occur.Mobile network service can be provided using MEC framework, wherein providing CDN service
When, CDN node can be selected by MEC framework, so that terminal obtains required content nearby, and the selection of CDN node can be with
It is realized by domain name service (Domain Name Service, DNS) technology.
The selection course of CDN node in the prior art are as follows: the DNS request that MEC server receiving terminal is sent, and via core
The DNS request is forwarded to corresponding global load balancing device by heart net, and global load balancing device can be from the multiple outer of connection
A node nearest apart from terminal is selected in portion's CDN node, and via core net and MEC server, it is outer to return to this to terminal
Address Internet protocol (Internet Protocol, IP) of portion's CDN node.
At least there is following technical problem in the prior art: in the case where providing CDN service for the terminal of high priority,
Although the edge C DN nodal distance terminal connecting with MEC server is closer, due to edge C DN node and external CDN node
Mutually isolated, global load balancing device only grasps the information of external CDN node, therefore the CDN selected for the terminal of high priority
Node is external CDN node, such that business access time delay is larger.
Summary of the invention
The present invention provides the selection method and equipment of a kind of CDN node, realizes and selects edge C DN for high-priority users
Node, to reduce business access time delay.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of selection method of CDN node, this method may include: global load balancing
Device receives the mark of the DNS request that MEC server is sent and terminal, which is to send DNS request and mark to MEC server
Equipment；Global load balancing device determines target external CDN node according to preset rules and DNS request, and sends out to MEC server
Send the IP address of target external CDN node；Global load balancing device includes mark in determining the high priority logo collection prestored
When knowledge, send to MEC server for applying for the solicitation message using edge C DN node；Global load balancing device receives MEC clothes
The response message using edge C DN node that business device is sent.
Second aspect, the present invention provide a kind of selection method of CDN node, and this method may include: that MEC server receives
The DNS request that terminal is sent, and determine according to the DNS request mark of terminal；MEC server is to the corresponding overall situation of DNS request
Load balancer sends DNS request and mark；MEC server receives the target external CDN node that global load balancing device is sent
IP address, and to terminal send target external CDN node IP address；The request of data that MEC server receiving terminal is sent；
MEC server when determining the solicitation message for receiving the transmission of global load balancing device, judge in edge C DN node set whether
There are an object edge CDN node, object edge CDN node is stored with the data of request, the side in edge C DN node set
Edge CDN node is connect with MEC server, and solicitation message is that global load balancing device is being high priority according to determining terminal is identified
The message sent when user to MEC server；If it is present MEC server sends the IP of object edge CDN node to terminal
Address, and the response message for using edge C DN node is sent to global load balancing device.
The third aspect, the present invention provide a kind of global load balancing device, which may include: to receive list
Member, determination unit and transmission unit.Receiving unit, for receiving the DNS request of MEC server transmission and the mark of terminal, eventually
End is the equipment for sending DNS request and mark to MEC server.Determination unit, for being determined according to preset rules and DNS request
Target external CDN node.Transmission unit, for sending the IP address of target external CDN node to MEC server；It is pre- determining
When including mark in the high priority logo collection deposited, send to MEC server for applying for the application using edge C DN node
Message.Receiving unit is also used to receive the response message using edge C DN node of MEC server transmission.
The CDN node that concrete implementation mode can be provided with reference to the possible implementation of first aspect or first aspect
Selection method in global load balancing device behavioral function.
Fourth aspect provides a kind of MEC server, which includes: receiving unit, transmission unit, determination unit
And judging unit.Receiving unit, for receiving the DNS request of terminal transmission；Determination unit, for being determined eventually according to DNS request
The mark at end；Transmission unit, for sending DNS request and mark to the corresponding global load balancing device of DNS request；It receives single
Member is also used to receive the IP address of the target external CDN node of global load balancing device transmission；Transmission unit was also used to end
End sends the IP address of target external CDN node；Receiving unit is also used to receive the request of data of terminal transmission；Determination unit,
It is also used to determine that the solicitation message for receiving the transmission of global load balancing device, solicitation message are global load balancing device according to mark
Know the message for determining and sending when terminal is high-priority users to MEC server；Judging unit, for receiving application in determination
When message, judge that, with the presence or absence of an object edge CDN node in edge C DN node set, object edge CDN node is stored with
The data of request, the edge C DN node in edge C DN node set are connect with MEC server；Transmission unit, if be also used to
In the presence of then sending the IP address of object edge CDN node to terminal, and send to global load balancing device and save using edge C DN
The response message of point.
The CDN node that concrete implementation mode can be provided with reference to the possible implementation of second aspect or second aspect
Selection method in MEC server behavioral function.
5th aspect, provides a kind of MEC server, which includes: at least one processor, memory, communication
Interface and communication bus.Processor is connect with memory, communication interface by communication bus, and memory is held for storing computer
Row instruction, when the operation of MEC server, processor executes the computer executed instructions of memory storage, so that MEC server is held
The selection method of the CDN node of row any one of such as possible implementation of second aspect or second aspect.
6th aspect, a kind of global load balancing device is provided, the global load balancing device include: at least one processor,
Memory, communication interface and communication bus.Processor is connect with memory, communication interface by communication bus, and memory is used for
Computer executed instructions are stored, when the operation of global load balancing device, the computer execution that processor executes memory storage refers to
It enables, so that global load balancing device executes the selection method of the CDN node such as first aspect.
7th aspect, provides a kind of computer storage medium, is stored thereon with computer executed instructions, when computer executes
Instruction on MEC server when running, so that MEC server executes the possible implementation such as second aspect or second aspect
Any one of CDN node selection method.
Eighth aspect provides a kind of global load balancing device, is stored thereon with computer executed instructions, when computer executes
Instruction on global load balancing device when running, so that global load balancing device executes the selection of the CDN node such as first aspect
Method.
The selection method of CDN node provided by the invention, global load balancing device is in the mark for receiving DNS request and terminal
After knowledge, target external CDN node is determined, the IP address of the target external CDN node is sent to MEC server, and pre- determining
When the high priority logo collection deposited includes the mark of terminal, sends to MEC server and disappeared using the application of edge C DN node
Breath, MEC server can return to the IP address of the target external CDN node to terminal, and receive request of data, and determination is deposited
When object edge CDN node is stored with the data of user's request, the IP address of the object edge CDN node is sent to terminal,
And the response message for using edge C DN node is sent to global load balancing device.In this way, being determined eventually by global load balancing device
End is high-priority users, and the edge C DN node for being stored with the data of user's request, Lai Weigao are determined by MEC server
Priority users select the edge C DN node being closer, and reduce business access time delay.
Detailed description of the invention
Fig. 1 is that one kind provided in an embodiment of the present invention can simplify signal using the system architecture of the embodiment of the present invention
Figure；
Fig. 2 is a kind of composition schematic diagram of MEC server provided in an embodiment of the present invention；
Fig. 3 is a kind of composition schematic diagram of global load balancing device provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the selection method of CDN node provided in an embodiment of the present invention；
Fig. 5 is the composition schematic diagram of another kind MEC server provided in an embodiment of the present invention；
Fig. 6 is the composition schematic diagram of another kind MEC server provided in an embodiment of the present invention；
Fig. 7 is the composition schematic diagram of another global load balancing device provided in an embodiment of the present invention；
Fig. 8 is the composition schematic diagram of another global load balancing device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is that one kind provided in an embodiment of the present invention can simplify signal using the system architecture of the embodiment of the present invention
Figure, as shown in Figure 1, the system architecture may include: terminal 11, MEC server 12, global load balancing device 13, at least one
Edge C DN node 14, at least one external CDN node 15, base station 16 and mobile core network 17.
Wherein, terminal 11 sends DNS request to MEC server 12 via base station 16, and MEC server 12 is according to receiving
DNS request determines the mark of terminal 11, and the mark of DNS request and terminal 11 is sent to global load balancing device 13.The overall situation is negative
It carries balanced device 13 and determines target external CDN node from least one external CDN node 15, send target to MEC server 12
The IP address of external CDN node, and when determining terminal 11 is high-priority users, application, which is sent, to MEC server 12 uses
The solicitation message of edge C DN node.MEC server 12 sends the IP of target external CDN node via base station 16 to terminal 11
Location, terminal 11 send request of data to MEC server 12 via base station 16 according to the address, and MEC server 12 is determining reception
To solicitation message, and determine the object edge that the data that terminal 11 is requested are stored at least one edge C DN node 14
When CDN node, the IP address of object edge CDN node is returned to terminal 11 via base station 16, and to global load balancing device 13
Send the response message for using edge C DN node.
Terminal 11, can be mobile terminal in concrete implementation, such as mobile phone and with the computer of mobile terminal,
Be also possible to portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, for example, can be personal logical
The equipment such as communication service (Personal Communication Service, PCS) phone, wireless phone, mobile phone.
MEC server 12 connect at least one edge C DN node 14, can provide mobile network service abundant,
In CDN service, more succinct CDN service topology is may be implemented in MEC server 12.
Global load balancing device 13 is connect at least one external CDN node 15, grasps at least one external CDN node
15 information, it is corresponding with the DNS request that terminal 11 is sent.
At least one edge C DN node 14 is the own CDN node of operator, at least one 15 phase of external CDN node
Mutually isolation.
At least one external CDN node 15, is the CDN node for belonging to external CDN service quotient.
Mobile core network 17 is sent out for receiving the request of data of the transmission of MEC server 12, and to target external CDN node
Give the request of data.
Fig. 2 is a kind of composition schematic diagram of MEC server provided in an embodiment of the present invention, as shown in Fig. 2, the MEC is serviced
Device may include: at least one processor 21, memory 22, communication interface 23 and communication bus 24.
It is specifically introduced below with reference to each component parts of the Fig. 2 to MEC server:
Wherein, processor 21 is the control centre of MEC server, can be a processor, is also possible to multiple processing
The general designation of element.For example, processor 21 is a CPU, it is also possible to specific integrated circuit (Application Specific
Integrated Circuit, ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention,
Such as: one or more digital signal processors (Digital Signal Processor, DSP), or, one or more is existing
Field programmable gate array (Field Programmable Gate Array, FPGA).
In concrete implementation, as one embodiment, processor 21 may include one or more CPU, such as in Fig. 2
Shown in CPU0 and CPU1.And as one embodiment, MEC server may include multiple processors, such as shown in Fig. 2
Processor 21 and processor 25.Each of these processors can be a single core processor (Single-CPU),
It can be a multi-core processor (Multi-CPU).Here processor can refer to one or more equipment, circuit, and/or use
In the processing core of processing data (such as computer program instructions).
Memory 22 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction
Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored
The other kinds of dynamic memory of breath and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (Electrically
Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-
Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal
Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store to have referring to
Enable or data structure form desired program code and can by any other medium of computer access, but not limited to this.
Memory 22, which can be, to be individually present, and is connected by communication bus 24 with processor 21.Memory 22 can also and processor
21 integrate.
In concrete implementation, memory 22, for storing the data in the present invention and executing software program of the invention.
Processor 21 can be by running or execute the software program being stored in memory 22, and calls and be stored in memory 22
Data, execute MEC server various functions.
Communication interface 23, using the device of any transceiver one kind, for other equipment or communication, such as nothing
Line access (Radio Access Network, RAN), WLAN (Wireless Local Area Networks,
WLAN), global load balancing device etc..Communication interface 23 may include that receiving unit realizes that receive capabilities and transmission unit are real
Existing sending function.
Communication bus 24 can be industry standard architecture (Industry Standard Architecture, ISA)
Bus, external equipment interconnection (Peripheral Component Interconnect, PCI) bus or extension industrial standard body
Architecture (Extended Industry Standard Architecture, EISA) bus etc..The bus can be divided into address
Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 2, it is not intended that only one convenient for indicating
Bus or a type of bus.
Fig. 3 is a kind of composition schematic diagram of global load balancing device provided in an embodiment of the present invention, as shown in figure 3, this is complete
Office's load balancer may include: at least one processor 31, memory 32, communication interface 33 and communication bus 34.
It is specifically introduced below with reference to each component parts of the Fig. 3 to global load balancing device:
Wherein, processor 31 is the control centre of global load balancing device, can be a processor, is also possible to multiple
The general designation of processing element.For example, processor 21 is a CPU, it is also possible to ASIC, or is arranged to implement of the invention real
One or more integrated circuits of example are applied, such as: one or more DSP, or, one or more FPGA.
In concrete implementation, as one embodiment, processor 31 may include one or more CPU, such as in Fig. 3
Shown in CPU0 and CPU1.And as one embodiment, global load balancing device may include multiple processors, such as in Fig. 3
Shown in processor 31 and processor 35.Each of these processors can be a single core processor, be also possible to one
A multi-core processor.Here processor can refer to one or more equipment, circuit, and/or (such as calculate for handling data
Machine program instruction) processing core.
Memory 32 can be ROM or can store the other kinds of static storage device of static information and instruction, RAM or
Person can store the other kinds of dynamic memory of information and instruction, be also possible to EEPROM, CD-ROM or other CDs are deposited
Storage, optical disc storage (including compression optical disc, laser disc, optical disc, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or
Other magnetic storage apparatus of person or can be used in carry or store have instruction or data structure form desired program code
And can by any other medium of computer access, but not limited to this.Memory 32, which can be, to be individually present, total by communicating
Line 34 is connected with processor 31.Memory 32 can also be integrated with processor 31.
In concrete implementation, memory 32, for storing the data in the present invention and executing software program of the invention.
Processor 31 can be by running or execute the software program being stored in memory 32, and calls and be stored in memory 32
Data, execute global load balancing device various functions.
Communication interface 33, using the device of any transceiver one kind, for other equipment or communication, such as
RAN, WLAN, MEC server etc..Communication interface 33 may include that receiving unit realizes that receive capabilities and transmission unit are realized
Sending function.
Communication bus 34 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus,
Data/address bus, control bus etc..Only to be indicated with a thick line convenient for indicating, in Fig. 3, it is not intended that an only bus or
A type of bus.
In order to be embodied as high-priority users selection edge C DN node, to reduce business access time delay, the present invention is implemented
Example provides a kind of selection method of CDN node, as shown in figure 4, this method may include:
401, terminal sends DNS request to MEC server.
Wherein, when user needs to obtain data by terminal, input operation can be carried out at the terminal, in this way, terminal
DNS request can be sent to MEC server via base station according to the input of user.
402, the DNS request that MEC server receiving terminal is sent, and determine according to DNS request the mark of terminal.
Wherein, MEC server can identify the DNS request after the DNS request for receiving terminal transmission, and determining should
DNS request is issued by terminal, to obtain the mark of the terminal.Wherein, the mark of terminal is used for unique identification itself, example
Property, the mark can for international mobile subscriber identity (International Mobile Subscriber Identity,
IMSI), international mobile phone equipment identification code (International Mobile Equipment Identity, IMEI) etc.,
Or the group organization of MEC server and the preparatory agreement of global load balancing device, such as the mark of member user.
403, MEC server sends DNS request and mark to global load balancing device.
Wherein, MEC server is receiving DNS request, and after determining the mark of terminal, can be to DNS request pair
The global load balancing device forwarding DNS request answered and the mark.
404, global load balancing device receives the mark of DNS request and terminal that MEC server is sent.
405, when global load balancing device includes the mark of terminal in determining the high priority logo collection prestored, to
MEC server sends solicitation message.
Wherein, global load balancing device, can be according to terminal after receiving the mark of terminal of MEC server transmission
Mark judge whether the terminal is high-priority users.Specifically, global load balancing device may determine that the height prestored is preferential
It whether include that the mark of terminal shows that the terminal is high-priority users if including in grade logo collection, it at this time can be to
MEC server is sent for applying for the solicitation message using edge C DN node.If not including, it is high for showing the terminal not
Priority users can select an external CDN node, for the terminal at this time so that terminal is requested from the outside CDN node
Data.In this way, be that the terminal selects CDN node by judging whether terminal is high-priority users, and according to judging result, it can
The CDN service of differentiation is provided to be embodied as different grades of user.
406, global load balancing device determines target external CDN node according to preset rules and DNS request.
Wherein, global load balancing device, can be according to default rule after the DNS request for receiving the transmission of MEC server
Target external CDN node is then determined with DNS request.Specifically, global load balancing device can identify DNS request, the DNS is determined
Request is issued by MEC server, to obtain the IP address of MEC server, and according to the corresponding relationship prestored, obtain with
The IP address of the corresponding mobile core network outlet network element of the IP address of MEC server, and network element is exported according to the mobile core network
IP address, and each of connect with global load balancing device the IP address of external CDN node, will go out apart from mobile core network
The nearest external CDN node of mouth network element logical reach is determined as target external CDN node.
It should be noted that corresponding relationship is the IP address of MEC server and the IP address of mobile core network outlet network element
Corresponding relationship.Wherein, mobile core network outlet network element refers to the network element that the mobile core network is connect with internet, such as packet count
According to gateway (Public Data Network Gateway, P-GW).
407, global load balancing device sends the IP address of target external CDN node to MEC server.
408, MEC server receives the IP address for the target external CDN node that global load balancing device is sent.
409, MEC server sends the IP address of target external CDN node to terminal.
Wherein, MEC server can send the IP address of target external CDN node to terminal, send DNS as terminal and ask
The response asked.
410, terminal receives the IP address for the target external CDN node that MEC server is sent.
411, terminal sends request of data to MEC server.
Wherein, terminal, can be according to this after receiving the IP address of target external CDN node of MEC server transmission
IP address sends request of data to MEC server, with the data for requesting user to need.
412, the request of data that MEC server receiving terminal is sent, and determining that receiving global load balancing device sends
Solicitation message when, judge in edge C DN node set with the presence or absence of an object edge CDN node, object edge CDN section
Point is stored with the data of request.
Wherein, the edge C DN node in edge C DN node set is connect with MEC server.
MEC server is after the request of data for receiving terminal transmission, it can be determined that it is equal whether to receive global load
What weighing apparatus was sent is used to apply for the solicitation message using edge C DN node.If it is determined that not receiving solicitation message, then show this
Terminal is not high-priority users, data can be obtained from the target external CDN node that step 406 determines, MEC takes at this time
Business device can send the request of data, the target external for including according to request of data so as to mobile core network to mobile core network
The IP address of CDN node sends request of data to the target external CDN node, and target external CDN node can be via movement
Core net, MEC server and base station are to terminal returned data.If it is determined that receiving solicitation message, then show the terminal for height
Priority users need to select edge C DN node to provide CDN service, and MEC server can be by judging edge C DN at this time
It whether there is an object edge CDN node in node set, the data which is stored with user's request are come
Judge whether edge C DN node is capable of providing CDN service.If it is determined that each edge C DN node in edge C DN node set
The not stored data for having user to request, then show that edge C DN node can not provide CDN service, MEC server can be at this time
Mobile core network sends request of data, so that mobile core network sends the request of data to target external CDN node.If it is determined that
There are object edge CDN nodes, then show that edge C DN node can provide CDN service, can execute following steps 413- at this time
Step 416:
If 413, there are object edge CDN node in edge C DN node set, MEC server sends mesh to terminal
Mark the IP address of edge C DN node.
Wherein, MEC server can be in determining edge C DN node set there are when object edge CDN node, to terminal
The IP address for sending the object edge CDN node sends the response of request of data as terminal.
414, terminal receives the IP address for the object edge CDN node that MEC server is sent.
Wherein, terminal, can be again after receiving the IP address of object edge CDN node of MEC server transmission
Request of data is sent to MEC server, so that the request of data is sent to object edge CDN node by MEC server.
415, MEC server sends the response message for using edge C DN node to global load balancing device.
Wherein, MEC server is being determined to send out to global load balancing device there are after object edge CDN node
The response message using edge C DN node is sent, the response of solicitation message is sent as global load balancing device.
416, global load balancing device receives the response message using edge C DN node that MEC server is sent.
The selection method of CDN node provided by the invention, global load balancing device is in the mark for receiving DNS request and terminal
After knowledge, target external CDN node is determined, the IP address of the target external CDN node is sent to MEC server, and pre- determining
When the high priority logo collection deposited includes the mark of terminal, sends to MEC server and disappeared using the application of edge C DN node
Breath, MEC server can return to the IP address of the target external CDN node to terminal, and receive request of data, and determination is deposited
When object edge CDN node is stored with the data of user's request, the IP address of the object edge CDN node is sent to terminal,
And the response message for using edge C DN node is sent to global load balancing device.In this way, being determined eventually by global load balancing device
End is high-priority users, and the edge C DN node for being stored with the data of user's request, Lai Weigao are determined by MEC server
Priority users select the edge C DN node being closer, and reduce business access time delay.
It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of each equipment interaction.It can manage
Solution, each equipment, in order to realize the above functions such as MEC server, global load balancing device, it comprises execute each function
It can corresponding hardware configuration and/or software module.Those skilled in the art should be readily appreciated that, in conjunction with disclosed herein
Embodiment description each exemplary algorithm steps, the present invention can with the combining form of hardware or hardware and computer software come
It realizes.Some function is executed in a manner of hardware or computer software driving hardware actually, spy depending on technical solution
Fixed application and design constraint.Professional technician can retouch each specific application using distinct methods to realize
The function of stating, but such implementation should not be considered as beyond the scope of the present invention.
The embodiment of the present invention can carry out function mould to MEC server, global load balancing device according to above method example
The division of block, for example, each functional module of each function division can be corresponded to, it can also be by two or more function collection
In Cheng Yi processing module.Above-mentioned integrated module both can take the form of hardware realization, can also use software function
The form of module is realized.It should be noted that being schematically that only one kind is patrolled to the division of module in the embodiment of the present invention
Function division is collected, there may be another division manner in actual implementation.
In the case where each function division of use correspondence each functional module, Fig. 5 is shown involved in above-described embodiment
MEC server alternatively possible composition schematic diagram, as shown in figure 5, the MEC server may include: receiving unit 51,
Transmission unit 52, determination unit 53 and judging unit 54.
Wherein, receiving unit 51, for supporting MEC server to execute the step in the selection method of CDN node shown in Fig. 4
DNS request that reception terminal described in rapid 402 is sent, step 408, the request of data of the transmission of receptions terminal described in step 412.
Transmission unit 52, for supporting MEC server to execute the step in the selection method of CDN node shown in Fig. 4
403, step 409, step 413, step 415.
Determination unit 53, for supporting MEC server to execute the step 402 in the selection method of CDN node shown in Fig. 4
The mark of the determination terminal, and determine the solicitation message for receiving the transmission of global load balancing device.
Judging unit 54, for supporting MEC server to execute the step 412 in the selection method of CDN node shown in Fig. 4
It whether there is an object edge CDN node, object edge CDN node storage in the judgement edge C DN node set
There are the data of request.
It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence
The function of functional module describes, and details are not described herein.
MEC server provided in an embodiment of the present invention for executing the selection method of above-mentioned CDN node, therefore can reach
To effect identical with the selection method of above-mentioned CDN node.
Using integrated unit, Fig. 6 shows the another of MEC server involved in above-described embodiment
The possible composition schematic diagram of kind.As shown in fig. 6, the MEC server includes: processing module 61, communication module 62 and memory module
63。
Processing module 61 is for carrying out control management to the movement of MEC server, for example, processing module 61 is for supporting
MEC server executes judgement edge C DN node described in the mark of determination terminal, step 412 described in the step 402 in Fig. 4
It whether there is an object edge CDN node in set, which is stored with the data of request, and/or is used for
Other processes of techniques described herein.Communication module 62 is such as global negative for supporting MEC server and other network entities
Carry the communication of balanced device.For example, communication module 62, for supporting MEC server to execute reception described in the step 402 in Fig. 4
DNS request that terminal is sent, step 403, step 408, step 409, the data of the transmission of receptions terminal described in step 412 are asked
It asks, step 413, step 415.Memory module 63, for storing the program code and data of MEC server.
Wherein, processing module 61 can be the processor in Fig. 2.It, which may be implemented or executes, combines the disclosure of invention
Described various illustrative logic blocks, module and circuit.Processor is also possible to realize the combination of computing function, such as
It is combined comprising one or more microprocessors, DSP and the combination of microprocessor etc..Communication module 62 can be logical in Fig. 2
Believe interface.Memory module 63 can be the memory in Fig. 2.
In the case where each function division of use correspondence each functional module, Fig. 7 is shown involved in above-described embodiment
Global load balancing device alternatively possible composition schematic diagram, as shown in fig. 7, the global load balancing device may include:
Receiving unit 71, determination unit 72 and transmission unit 73.
Wherein, receiving unit 71, for supporting global load balancing device to execute the selection method of CDN node shown in Fig. 4
In step 404, step 416.
Determination unit 72, for supporting global load balancing device to execute the step in the selection method of CDN node shown in Fig. 4
Rapid 406.
Transmission unit 73, for supporting global load balancing device to execute the step in the selection method of CDN node shown in Fig. 4
Rapid 405, step 407.
It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence
The function of functional module describes, and details are not described herein.
Global load balancing device provided in an embodiment of the present invention, for executing the selection method of above-mentioned CDN node, therefore can
To reach effect identical with the selection method of above-mentioned CDN node.
Using integrated unit, Fig. 8 shows global load balancing device involved in above-described embodiment
Alternatively possible composition schematic diagram.As shown in figure 8, the global load balancing device includes: processing module 81, communication module 82
With memory module 83.
Processing module 81 is for carrying out control management to the movement of global load balancing device, for example, processing module 81 is used for
Global load balancing device is supported to execute the step 406 in Fig. 4, and/or other processes for techniques described herein.Communication
Module 82 is for supporting global load balancing device and other network entities, such as the communication of MEC server.For example, communication module 82,
For supporting global load balancing device to execute step 404, step 405, step 407, step 416 in Fig. 4.Memory module 83,
For storing the program code and data of global load balancing device.
Wherein, processing module 81 can be the processor in Fig. 3.It, which may be implemented or executes, combines the disclosure of invention
Described various illustrative logic blocks, module and circuit.Processor is also possible to realize the combination of computing function, such as
It is combined comprising one or more microprocessors, DSP and the combination of microprocessor etc..Communication module 82 can be logical in Fig. 3
Believe interface.Memory module 83 can be the memory in Fig. 3.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It may be combined or can be integrated into another device, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over
Multiple and different places.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that an equipment (can be list
Piece machine, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Change or replacement in the technical scope disclosed by the present invention, should be covered by the protection scope of the present invention.Therefore, this hair
Bright protection scope should be based on the protection scope of the described claims.
Claims (14)
1. a kind of selection method of content distributing network CDN node, which is characterized in that the described method includes:
Global load balancing device receives the mark of domain name service DNS request and terminal that mobile edge calculations MEC server is sent,
The terminal is the equipment for sending the DNS request and the mark to the MEC server；
The global load balancing device determines target external CDN node according to preset rules and the DNS request, and to described
MEC server sends the internet protocol address of the target external CDN node；
When the global load balancing device includes the mark in determining the high priority logo collection prestored, Xiang Suoshu MEC
Server is sent for applying for the solicitation message using edge C DN node；
The global load balancing device receives the response message using edge C DN node that the MEC server is sent.
2. the selection method of CDN node according to claim 1, which is characterized in that the global load balancing device according to
Preset rules and the DNS request determine target external CDN node, comprising:
The global load balancing device identifies the DNS request, obtains the IP address of the MEC server；
The global load balancing device obtains shifting corresponding with the IP address of the MEC server according to the corresponding relationship prestored
The IP address of dynamic core net outlet network element, the corresponding relationship include the IP address and mobile core network outlet net of MEC server
The IP address of member；
The global load balancing device exports the IP address of network element according to the mobile core network, will be apart from the mobile core network
Network element logical reach nearest external CDN node in outlet is determined as the target external CDN node.
3. a kind of selection method of content distributing network CDN node, which is characterized in that the described method includes:
The domain name service DNS request that mobile edge calculations MEC server receiving terminal is sent, and determined according to the DNS request
The mark of the terminal；
The MEC server sends the DNS request and the mark to the corresponding global load balancing device of the DNS request；
The MEC server is with receiving the Internet protocol IP for the target external CDN node that the global load balancing device is sent
Location, and send to the terminal IP address of the target external CDN node；
The MEC server receives the request of data that the terminal is sent；
The MEC server judges that edge C DN is saved when determining the solicitation message for receiving the global load balancing device transmission
It whether there is an object edge CDN node in point set, the object edge CDN node is stored with the data of request, described
Edge C DN node in edge C DN node set is connect with the MEC server, and the solicitation message is the global load
The message that balanced device is sent when determining that the terminal is high-priority users according to the mark to the MEC server；
If it is present the MEC server sends the IP address of the object edge CDN node to the terminal, and to institute
It states global load balancing device and sends the response message for using edge C DN node.
4. the selection method of CDN node according to claim 3, which is characterized in that the method also includes:
If the not stored data for having request of each edge C DN node in the edge C DN node set, the MEC
Server sends the request of data to mobile core network, so that the mobile core network is sent out to the target external CDN node
Send the request of data.
5. the selection method of CDN node according to claim 4, which is characterized in that the method also includes:
The MEC server is determining that Xiang Suoshu mobile core network sends the data and asks when not receiving the solicitation message
It asks.
6. a kind of global load balancing device, which is characterized in that the global load balancing device includes: receiving unit, determination unit
And transmission unit；
The receiving unit, for receiving the mark of domain name service DNS request and terminal that mobile edge calculations MEC server is sent
Know, the terminal is the equipment for sending the DNS request and the mark to the MEC server；
The determination unit, for determining that target external content distributing network CDN is saved according to preset rules and the DNS request
Point；
The transmission unit, for sending to the MEC server Internet protocol IP of the target external CDN node
Location；When including the mark in determining the high priority logo collection prestored, Xiang Suoshu MEC server is sent for applying making
With the solicitation message of edge C DN node；
The receiving unit is also used to receive the response message using edge C DN node that the MEC server is sent.
7. global load balancing device according to claim 6, which is characterized in that the determination unit is specifically used for:
It identifies the DNS request, obtains the IP address of the MEC server；
According to the corresponding relationship prestored, mobile core network outlet corresponding with the IP address of MEC server network element is obtained
IP address, the corresponding relationship include the IP address of MEC server and the IP address of mobile core network outlet network element；
The IP address of network element is exported according to the mobile core network, will export network element logical reach most apart from the mobile core network
Close external CDN node is determined as the target external CDN node.
8. a kind of mobile edge calculations MEC server, which is characterized in that the MEC server includes: receiving unit, sends list
Member, determination unit and judging unit；
The receiving unit, for receiving the domain name service DNS request of terminal transmission；
The determination unit, for determining the mark of the terminal according to the DNS request；
The transmission unit, for sending the DNS request and the mark to the corresponding global load balancing device of the DNS request
Know；
The receiving unit is also used to receive the target external content distributing network CDN section that the global load balancing device is sent
The internet protocol address of point；
The transmission unit is also used to send the IP address of the target external CDN node to the terminal；
The receiving unit is also used to receive the request of data that the terminal is sent；
The determination unit, is also used to determine the solicitation message for receiving the global load balancing device transmission, and the application disappears
Breath is that the global load balancing device is serviced when determining that the terminal is high-priority users according to the mark to the MEC
The message that device is sent；
The judging unit, for judging to whether there is in edge C DN node set when determination receives the solicitation message
One object edge CDN node, the object edge CDN node are stored with the data of request, in the edge C DN node set
Edge C DN node connect with the MEC server；
The transmission unit is also used to if it is present send the IP address of the object edge CDN node to the terminal,
And the response message for using edge C DN node is sent to the global load balancing device.
9. MEC server according to claim 8, which is characterized in that
The transmission unit, if each edge C DN node being also used in the edge C DN node set is not stored, ask the visitor in
The data asked then send the request of data to mobile core network, so that the mobile core network is saved to the target external CDN
Point sends the request of data.
10. MEC server according to claim 9, which is characterized in that
The transmission unit is also used to when determination does not receive the solicitation message, described in the transmission of Xiang Suoshu mobile core network
Request of data.
11. a kind of mobile edge calculations MEC server, which is characterized in that the MEC server include: processor, memory,
Communication interface and communication bus；
The processor is connect with the memory, the communication interface by the communication bus, and the memory is for depositing
Computer executed instructions are stored up, when MEC server operation, the processor executes the calculating of the memory storage
Machine executes instruction, so that the MEC server executes the selection method of the CDN node as described in any one of claim 3-5.
12. a kind of global load balancing device, which is characterized in that the global load balancing device includes: processor, memory, leads to
Believe interface and communication bus；
The processor is connect with the memory, the communication interface by the communication bus, and the memory is for depositing
Computer executed instructions are stored up, when global load balancing device operation, the processor executes the institute of the memory storage
Computer executed instructions are stated, so that the global load balancing device executes the selection of CDN node as claimed in claim 1 or 2
Method.
13. a kind of computer storage medium, which is characterized in that the computer storage medium includes computer executed instructions, when
The computer executed instructions on mobile edge calculations MEC server when running, so that the MEC server executes such as right
It is required that the selection method of CDN node described in any one of 3-5.
14. a kind of computer storage medium, which is characterized in that the computer storage medium includes computer executed instructions, when
The computer executed instructions on global load balancing device when running, so that the global load balancing device is executed as right is wanted
The selection method of CDN node described in asking 1 or 2.
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| CN114095869A (en) * | 2022-01-07 | 2022-02-25 | 广东海洋大学 | Method, device and system for scheduling multi-access edge computing nodes for terminal |
| CN114827276A (en) * | 2022-04-22 | 2022-07-29 | 网宿科技股份有限公司 | Data processing method and device based on edge calculation and readable storage medium |
| CN114827276B (en) * | 2022-04-22 | 2023-10-24 | 网宿科技股份有限公司 | Data processing method and device based on edge calculation and readable storage medium |
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