CN113382028B - Method and system for realizing content distribution network and edge user plane functional entity - Google Patents
Method and system for realizing content distribution network and edge user plane functional entity Download PDFInfo
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- CN113382028B CN113382028B CN202010161509.XA CN202010161509A CN113382028B CN 113382028 B CN113382028 B CN 113382028B CN 202010161509 A CN202010161509 A CN 202010161509A CN 113382028 B CN113382028 B CN 113382028B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
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Abstract
The disclosure relates to a method and a system for realizing a content distribution network and an edge user plane functional entity. The content distribution network implementation method comprises the following steps: the edge user plane functional entity analyzes a first domain name system response packet of the content distribution network service to obtain address information; the edge user plane functional entity generates a position information insertion strategy by using the address information in the response packet; and the edge user plane functional entity inserts address information in the hypertext transfer protocol request according to the position information insertion strategy so that the content distribution network scheduling center identifies and distributes the content distribution network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request. The method and the device can insert the address information in the hypertext transfer protocol request to finish the function of transmitting the user position to the CDN central scheduling system.
Description
Technical Field
The present disclosure relates to the field of mobile communications, and in particular, to a method and a system for implementing a content distribution network, and an edge user plane functional entity.
Background
In 4G Network deployment, because a PGW (PDN GateWay, where PDN is Public Data Network, public Data Network) adopts a province-level centralized deployment manner, it is impossible to deploy MEC (Multi-Access Edge Computing) nodes close to a user, and therefore, a CDN (Content Delivery Network) service based on a mobile Network is difficult to fall to the ground.
In a 5G SA (independent networking) network, a UPF (User Plane Function ) may be deployed hierarchically as needed, so that a low-latency high-bandwidth CDN service may be deployed based on the 5G network, but how a CDN central scheduling system learns location information of a mobile network User is a problem of landing on the CDN.
Disclosure of Invention
In view of at least one of the above technical problems, the present disclosure provides a method and a system for implementing a content delivery network, and an edge user plane functional entity, which can insert address information in a hypertext transfer protocol request to complete a function of delivering a user location to a CDN central scheduling system.
According to one aspect of the present disclosure, there is provided a content distribution network implementation method, including:
the edge user plane functional entity analyzes a first domain name system response packet of the content distribution network service to obtain address information;
the edge user plane functional entity generates a position information insertion strategy by using the address information in the response packet;
and the edge user plane functional entity inserts address information in the hypertext transfer protocol request according to the position information insertion strategy so that the content distribution network scheduling center identifies and distributes the content distribution network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the address information is an IP address.
In some embodiments of the present disclosure, the analyzing, by the edge user plane functional entity, the first domain name system response packet of the content distribution network service, and the obtaining address information includes:
the edge user plane functional entity analyzes a first domain name system response packet of the content distribution network service to obtain a fully qualified domain name or a uniform resource locator;
and the edge user plane functional entity checks a table to determine a corresponding IP address according to the fully-defined domain name or the uniform resource locator.
In some embodiments of the disclosure, the inserting the address information in the hypertext transfer protocol request comprises:
and carrying out IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request.
In some embodiments of the disclosure, the hypertext transfer protocol request is a hypertext transfer protocol domain name system request.
In some embodiments of the disclosure, the performing IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request includes:
and replacing the source address requested by the domain name system of the hypertext transfer protocol with the public network address of the multi-access edge calculation.
In some embodiments of the disclosure, the performing IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request includes:
and inserting the position domain information of the edge user plane functional entity into the message header requested by the domain name system of the hypertext transfer protocol.
In some embodiments of the present disclosure, the content distribution network implementation method further includes:
under the condition that a hypertext transfer protocol request processed by a position information insertion strategy is received by a content distribution network center scheduling system, a multi-access edge computing service area where a user terminal is located is identified through multi-access edge computing public network address or/user plane functional entity position domain information;
the content distribution network center dispatching system replies the address of a content distribution network edge node server of one multi-access edge computing node of the user terminal;
the user terminal requests a content service from a content distribution network edge node.
In some embodiments of the disclosure, the content distribution network implementing method further includes:
a user terminal uses a content distribution network service, and acquires an IP address of a content distribution network center scheduling system through an operator domain name system in the first domain name system request process; and then, the step of analyzing the first domain name system response packet of the content distribution network service by the edge user plane functional entity is executed.
According to another aspect of the present disclosure, there is provided an edge user plane functional entity, including:
the address information analysis module is used for analyzing a first domain name system response packet of the content distribution network service to obtain address information;
the insertion strategy generating module is used for generating a position information insertion strategy by utilizing the address information in the response packet;
and the address information inserting module is used for inserting the address information in the hypertext transfer protocol request according to the position information inserting strategy so that the content distribution network dispatching center identifies and distributes the content distribution network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the edge user plane function entity is configured to perform operations for implementing a content distribution network implementation method as described in any one of the above embodiments.
According to another aspect of the present disclosure, there is provided an edge user plane functional entity, including:
a memory to store instructions;
a processor, configured to execute the instructions, so that the edge user plane functional entity performs operations of implementing the content distribution network implementation method according to any of the above embodiments.
According to another aspect of the present disclosure, a content distribution network implementation system is provided, which includes an edge user plane functional entity as described in any of the above embodiments.
In some embodiments of the present disclosure, the content distribution network implementing system further includes:
the content distribution network center dispatching system is used for identifying a multi-access edge computing service area where the user terminal is located through multi-access edge computing public network address or/user plane functional entity position domain information under the condition of receiving a hypertext transfer protocol request processed by a position information insertion strategy; replying a content distribution network edge node server address of a multi-access edge computing node of a user terminal;
and the user terminal is used for requesting the content service to the edge node of the content distribution network.
According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement a content distribution network implementation method as in any one of the above embodiments.
The method and the device can insert the address information in the hypertext transfer protocol request to finish the function of transmitting the user position to the CDN central scheduling system.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of some embodiments of a method of implementing a content distribution network of the present disclosure.
Fig. 2 is a schematic diagram of further embodiments of methods for implementing a distribution network according to the present disclosure.
Fig. 3 is a schematic diagram of further embodiments of methods of implementing a content distribution network according to the present disclosure.
Fig. 4 is a schematic diagram of some embodiments of an edge user plane functional entity according to the present disclosure.
Fig. 5 is a schematic diagram of other embodiments of an edge user plane functional entity according to the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
The inventor finds out through research that: in the related technology, the area where the user is located is identified according to the terminal IP address, and then a CDN node deployed in a local MEC is allocated to the user. However, in some eMBB (Enhanced Mobile Broadband) deployment scenarios, terminal addresses are uniformly allocated by a central SMF (Session Management Function) and do not have regional characteristics, so that the CDN central scheduling system cannot identify a user location and implement a Function of allocating local CDN nodes nearby.
In view of at least one of the above technical problems, the present disclosure provides a content distribution network implementation method and system, and an edge user plane functional entity, and the present disclosure is described below by specific embodiments.
Fig. 1 is a schematic diagram of some embodiments of a method of implementing a content distribution network of the present disclosure. Preferably, the embodiment can be executed by the edge user plane functional entity or the content distribution network implementation system of the present disclosure. The method comprises steps 11-13, wherein:
In some embodiments of the present disclosure, the address information may be an IP (Internet Protocol) address.
In some embodiments of the present disclosure, step 11 may include steps 111-112, wherein:
step 111, the edge user plane functional entity parses a first DNS (Domain Name System) response packet of the content distribution network service to obtain an FQDN (Fully Qualified Domain Name) or a URL (uniform resource locator).
And step 112, the edge user plane functional entity determines a corresponding IP address by table lookup according to the fully-defined domain name or the uniform resource locator.
And step 12, the edge user plane functional entity generates a position information insertion strategy by using the address information in the response packet.
And step 13, the edge user plane functional entity inserts address information in the hypertext transfer protocol request according to the position information insertion strategy so that the content distribution network dispatching center identifies and distributes the content distribution network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the HTTP (HyperText Transfer Protocol) request is a HyperText Transfer Protocol domain name system request.
In some embodiments of the present disclosure, in step 13, the inserting address information in the hypertext transfer protocol request may include: and carrying out IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the step of performing IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request may include: the hypertext transfer protocol domain name system request source address is replaced by a multi-access edge computing public network address.
In some embodiments of the present disclosure, the step of performing IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request may include: and inserting the position domain information of the edge user plane functional entity into the message header requested by the domain name system of the hypertext transfer protocol.
Based on the content delivery network implementation method provided by the above embodiment of the present disclosure, aiming at the technical problem that how the 5G network notifies the CDN central scheduling system of the user location information in the related art has no standard scheme and has a certain limitation, the above embodiment of the present disclosure can enhance the function of the 5G UPF: and analyzing the DNS response packet to identify a specific FQDN/URL, generating a position information insertion strategy of the HTTP DNS request packet by using the IP address in the response packet, and finishing the function of transmitting the user position to the CDN central scheduling system.
Fig. 2 is a schematic diagram of further embodiments of methods for implementing a distribution network of the present disclosure. Preferably, the present embodiment can be executed by the present disclosure distribution network implementation system. The method comprises the steps of 1-5, wherein:
and 1, using the CDN service by the 5G terminal, and acquiring an IP address of a CDN central scheduling system through an operator DNS in the first DNS process.
And 2, in DNS Response, resolving the Response packet by a Local UPF (edge user plane function entity), identifying a specific FQDN/URL, and generating a position information insertion strategy by using an IP address in the DNS Response packet.
And 3, after receiving the first DNS response, the terminal initiates a secondary HTTP DNS request to the CDN central scheduling system to obtain a CDN edge node server address, and the UPF performs packet processing of position information insertion on the hit HTTP request by matching the IP address of the position information insertion strategy in the step 2.
Step 4, the location information insertion strategy can use two modes: 1. replace the source address of the HTTP DNS request with the public network address (identifiable location information), 2, insert UPF location domain information in the HTTP message header.
Based on the content distribution network implementation method provided by the above embodiment of the present disclosure, the following two functions are enhanced for the UPF: 1. supporting FQDN/URL and IP address detection, and inserting a strategy by using the identified information (FQDN/URL and IP address) position information; 2. and the UPF carries out position information insertion on the hit HTTP packet based on the position information insertion strategy (two ways: IP packet source address replacement or UPF position domain information).
Fig. 3 is a schematic illustration of further embodiments of methods of implementing the disclosed content distribution network. Preferably, the present embodiment can be executed by the present disclosure distribution network implementation system. The method comprises steps 31-39, wherein:
step 31, the user terminal uses the content distribution network service, and obtains the IP address of the content distribution network central dispatching system through the operator domain name system in the first domain name system request process.
Step 32, in DNS Response, local UPF (edge user plane function) resolves the Response packet, identifies the specific FQDN/URL, and generates the location information insertion policy using the IP address in the DNS Response packet.
In some embodiments of the present disclosure, a method for implementing a content distribution network of the present disclosure may include: after receiving the correspondence of the first DNS, the user terminal initiates a secondary HTTP DNS request to the CDN central scheduling system to obtain the CDN edge node server address. This step may include steps 33-36.
Step 33, the user terminal sends an HTTP DNS request to the edge user plane function entity.
And step 34, the edge user plane functional entity performs packet processing of inserting the position information on the hit HTTP request by matching the IP address of the position information inserting strategy in the step 2.
Step 35, the location information insertion strategy can use two modes: 1. replace the source address of the HTTP DNS request with a public network address (identifiable location information), 2, insert the UPF location domain information in the HTTP message header.
And step 36, the location information insertion policy function module in the edge user plane function entity forwards the HTTP DNS request to the CDN central scheduling system.
And step 37, the CDN central dispatching system receives the DNS request processed by the strategy and identifies the MEC service area where the user is located through the MEC public network address/UPF position domain information.
And step 38, the CDN central dispatching system replies a CDN edge node server address of one MEC node of the terminal through an HTTP DNS response message.
Step 39, the user terminal (5G terminal) requests the content service to the CDN edge node.
Compared with a fixed network CDN scheme, the user position can be identified through user IP address information, 5G is under some MBB scenes, terminal addresses are uniformly distributed by a center SMF, and the terminal addresses do not have regional characteristics, so that the user position cannot be identified, and the limitation can be solved by the scheme.
The embodiment of the disclosure performs function enhancement on Local UPF, namely edge UPF, and the Local UPF analyzes the CDN service first DNS response to identify a specific FQDN/URL and generates a position information insertion strategy of an HTTP DNS request packet by using an IP address in a response packet;
based on the strategy, in the HTTP request initiated by the terminal, the Local UPF inserts the position information according to the matching result of the IP address (two modes are IP packet source address replacement or UPF position domain information), and the CDN scheduling center can identify and allocate the MEC CDN node where the user is located according to the address information in the HTTP request.
Fig. 4 is a schematic diagram of some embodiments of an edge user plane functional entity according to the present disclosure. As shown in fig. 4, the edge user plane functional entity of the present disclosure may include an address information parsing module 41, an insertion policy generating module 42, and an address information inserting module 43, where:
the address information analyzing module 41 is configured to analyze a first domain name system response packet of the content distribution network service to obtain address information.
In some embodiments of the present disclosure, the address information may be an IP address.
In some embodiments of the present disclosure, the address information resolution module 41 may be configured to resolve a first DNS response packet of the content distribution network service to obtain a fully qualified domain name or a uniform resource locator; and according to the fully-defined domain name or the uniform resource locator, looking up a table to determine a corresponding IP address.
And an insertion policy generation module 42, configured to generate a location information insertion policy by using the address information in the response packet.
And an address information inserting module 43, configured to insert address information in the hypertext transfer protocol request according to the location information inserting policy, so that the content delivery network scheduling center identifies and allocates a content delivery network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the hypertext transfer protocol request is a hypertext transfer protocol domain name system request.
In some embodiments of the present disclosure, the address information inserting module 43 may be configured to perform IP packet source address replacement or edge user plane function entity location domain information insertion in the hypertext transfer protocol request, in case of performing address information insertion in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the address information inserting module 43 may be configured to replace the source address requested by the domain name system of the hypertext transfer protocol with the multi-access edge computing public network address in the case of performing IP packet source address replacement or edge user plane functional entity location domain information insertion in the hypertext transfer protocol request.
In other embodiments of the present disclosure, the address information inserting module 43 may be configured to insert the location domain information of the edge user plane functional entity in a header of the message requested by the domain name system of the hypertext transfer protocol, in case of performing IP packet source address replacement or edge user plane functional entity location domain information insertion in the hypertext transfer protocol request.
In some embodiments of the present disclosure, the edge user plane function entity is configured to perform operations for implementing a content distribution network implementation method according to any of the embodiments described above (for example, any of fig. 1 to 3).
Based on the edge user plane functional entity provided by the above embodiment of the present disclosure, aiming at the technical problem that how a 5G network notifies a CDN central scheduling system of user location information in the related art has no standard scheme and has a certain limitation, the above embodiment of the present disclosure can enhance the function by performing the function on a 5G UPF: and analyzing the DNS response packet to identify a specific FQDN/URL, generating a position information insertion strategy of the HTTP DNS request packet by using the IP address in the response packet, and finishing the function of transmitting the user position to the CDN central scheduling system.
Fig. 5 is a schematic diagram of an edge user plane functional entity according to another embodiment of the disclosure. As shown in fig. 5, the edge user plane functional entity of the present disclosure may include a memory 51 and a processor 52, wherein:
a memory 51 for storing instructions.
A processor 52, configured to execute the instructions, so that the edge user plane functional entity performs the operation of implementing the content distribution network implementation method according to any one of the embodiments described above (for example, any one of fig. 1 to fig. 3).
The edge user plane functional entity of the above embodiment of the present disclosure enhances the following functions: analyzing the DNS response packet, identifying a specific FQDN/URL, and generating a position information insertion strategy by using an IP address in the DNS response packet; and the UPF carries out position information insertion on the hit HTTP packet based on the position information insertion strategy (two modes, namely IP packet source address replacement or UPF position domain information).
Fig. 2 and 3 also present schematic diagrams of some embodiments of the disclosed content distribution network implementation system. As shown in fig. 2, the system for implementing a content distribution network according to the present disclosure may include an edge user plane function (Local UPF) as described in any of the above embodiments (e.g., the embodiments of fig. 4 or fig. 5).
In some embodiments of the present disclosure, as shown in fig. 2 or fig. 3, the content delivery network implementation system may further include a CDN (content delivery network) central scheduling system and a user terminal (5G terminal), wherein:
the content distribution network center dispatching system is used for identifying a multi-access edge computing service area where the user terminal is located through multi-access edge computing public network address or/user plane functional entity position domain information under the condition of receiving a hypertext transfer protocol request processed by a position information insertion strategy; and replying the content distribution network edge node server address of one multi-access edge computing node of the user terminal.
And the user terminal is used for requesting the content service to the edge node of the content distribution network.
In some embodiments of the present disclosure, as shown in fig. 2 or fig. 3, the user terminal may further be configured to use the content distribution network service, and in the first domain name system request process, obtain, by the operator domain name system, an IP address of the content distribution network central scheduling system; and then the edge user plane functional entity executes the operation of analyzing the first domain name system response packet of the content distribution network service.
In some embodiments of the present disclosure, as shown in fig. 2 or fig. 3, the content delivery network implementation system may further include a Domain Name System (DNS), a base station, a CDN edge node, a multi-access edge computing entity (MEC), and a central user plane function entity (Core UPF), wherein:
and the Domain Name System (DNS) is used for providing the IP address of the CDN central scheduling system for the 5G terminal according to the request of the 5G terminal.
And the CDN edge node is used for providing content service for the user terminal through the multi-access edge computing entity.
Based on the content delivery network implementation system provided by the above embodiment of the present disclosure, aiming at the technical problem that how the 5G network notifies the CDN central scheduling system of the user location information in the related art has no standard scheme and has a certain limitation, the above embodiment of the present disclosure can enhance the function by performing the function on the 5G UPF: and analyzing the DNS response packet to identify a specific FQDN/URL, generating a position information insertion strategy of the HTTP DNS request packet by using the IP address in the response packet, and finishing the function of transmitting the user position to the CDN central scheduling system.
According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement a content distribution network implementation method as described in any one of the embodiments (for example, in any one of fig. 1 to 3).
Based on the computer-readable storage medium provided by the above-mentioned embodiment of the present disclosure, the 5G UPF may be functionally enhanced by: and analyzing the DNS response packet to identify a specific FQDN/URL, generating a position information insertion strategy of the HTTP DNS request packet by using the IP address in the response packet, and finishing the function of transmitting the user position to the CDN central scheduling system.
The functional units described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.
Thus far, the present disclosure has been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware to implement the above embodiments, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A method for implementing a content distribution network, comprising:
the edge user plane functional entity analyzes a first domain name system response packet of the content distribution network service to obtain address information;
the edge user plane functional entity generates a position information insertion strategy by using the address information in the response packet;
the edge user plane functional entity inserts address information in the hypertext transfer protocol request according to the position information insertion strategy so that a content distribution network dispatching center identifies and distributes a content distribution network edge node where a user terminal is located according to the address information in the hypertext transfer protocol request;
wherein the inserting of the address information in the hypertext transfer protocol request comprises:
performing IP packet source address replacement or edge user plane function entity location domain information insertion in a hypertext transfer protocol request, wherein the hypertext transfer protocol request is a hypertext transfer protocol domain name system request;
wherein the performing IP packet source address replacement or edge user plane functional entity location domain information insertion in the hypertext transfer protocol request comprises:
replacing a request source address of a domain name system of the hypertext transfer protocol with a multi-access edge computing public network address;
or the like, or a combination thereof,
and inserting the position domain information of the edge user plane functional entity into the message header requested by the domain name system of the hypertext transfer protocol.
2. The content distribution network implementing method according to claim 1, wherein the address information is an IP address;
the analyzing the first domain name system response packet of the content distribution network service by the edge user plane functional entity to obtain the address information comprises the following steps:
the edge user plane functional entity analyzes a first domain name system response packet of the content distribution network service to obtain a fully qualified domain name or a uniform resource locator;
and the edge user plane functional entity checks a table to determine a corresponding IP address according to the fully-defined domain name or the uniform resource locator.
3. The content distribution network implementing method according to claim 1 or 2, further comprising:
under the condition that a hypertext transfer protocol request processed by a position information insertion strategy is received by a content distribution network center scheduling system, a multi-access edge computing service area where a user terminal is located is identified through multi-access edge computing public network address or/user plane functional entity position domain information;
the content distribution network center dispatching system replies the address of a content distribution network edge node server of one multi-access edge computing node of the user terminal;
the user terminal requests a content service from a content distribution network edge node.
4. The content distribution network implementing method according to claim 1 or 2, further comprising:
a user terminal uses a content distribution network service, and acquires an IP address of a content distribution network center dispatching system through an operator domain name system in a first domain name system request process; and then, the step of analyzing the first domain name system response packet of the content distribution network service by the edge user plane functional entity is executed.
5. An edge user plane functional entity, comprising:
the address information analysis module is used for analyzing a first domain name system response packet of the content distribution network service to obtain address information;
the insertion strategy generation module is used for generating a position information insertion strategy by utilizing the address information in the response packet;
the address information inserting module is used for inserting address information in the hypertext transfer protocol request according to the position information inserting strategy so that the content distribution network dispatching center can identify and distribute the content distribution network edge node where the user terminal is located according to the address information in the hypertext transfer protocol request;
the system comprises an address information insertion module, a domain name system module and a domain name system module, wherein the address information insertion module is used for replacing an IP packet source address or inserting the position domain information of an edge user plane functional entity in a hypertext transfer protocol request under the condition of inserting address information in the hypertext transfer protocol request, and the hypertext transfer protocol request is a hypertext transfer protocol domain name system request;
the device comprises an address information insertion module, a multi-access edge calculation public network address calculation module and a network address generation module, wherein the address information insertion module is used for replacing a hypertext transfer protocol domain name system request source address with a multi-access edge calculation public network address under the condition of performing IP packet source address replacement or edge user plane functional entity position domain information insertion in a hypertext transfer protocol request; or, inserting the position domain information of the edge user plane functional entity into the message header requested by the domain name system of the hypertext transfer protocol.
6. The edge user plane functional entity of claim 5, wherein the edge user plane functional entity is configured to perform operations for implementing the content distribution network implementation method according to claim 2.
7. An edge user plane functional entity, comprising:
a memory to store instructions;
a processor configured to execute the instructions to cause the edge user plane functional entity to perform operations to implement the content distribution network implementing method of any one of claims 1-2.
8. A content distribution network implementation system, characterized in that it comprises an edge user plane functionality according to any of claims 5-7.
9. The content distribution network implementing system according to claim 8, further comprising:
a content distribution network center dispatching system used for identifying a multi-access edge computing service area where a user terminal is located by multi-access edge computing public network address or/user plane function entity position domain information under the condition of receiving a hypertext transmission protocol request processed by a position information inserting strategy; replying a content distribution network edge node server address of a multi-access edge computing node of a user terminal;
and the user terminal is used for requesting the content service to the edge node of the content distribution network.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement the content distribution network-implemented method of any one of claims 1-4.
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