CN113067907B - Method and related equipment for addressing edge application - Google Patents
Method and related equipment for addressing edge application Download PDFInfo
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- CN113067907B CN113067907B CN202010002109.4A CN202010002109A CN113067907B CN 113067907 B CN113067907 B CN 113067907B CN 202010002109 A CN202010002109 A CN 202010002109A CN 113067907 B CN113067907 B CN 113067907B
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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
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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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
Abstract
The embodiment of the invention discloses a method for addressing an edge application and related equipment. The method comprises the following steps: a Domain Name System (DNS) server receives a first edge application access request from terminal equipment, analyzes the first edge application access request and obtains a first domain name in the first edge application access request; judging whether the first domain name is in an authorized domain name set obtained in advance; under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance; and sending a domain name resolution result containing the specific destination address to the terminal equipment.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method for addressing an edge application and related equipment.
Background
With the development of edge computing technology, how to find and obtain an optimal service node of an edge application in the case of receiving a service request of the edge application is a core problem of edge computing in a network layer.
Currently, local shunting and addressing from a User to an edge application are implemented by statically configuring an address of the edge application of an edge compute node on a User Plane Function (UPF). However, the edge single-point service application mode has a great fault risk, is not suitable for large-scale commercial deployment, and lacks safety and reliability; in addition, the static configuration mode lacks flexibility and is difficult to deploy in scale.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide a method for addressing an edge application and a related device.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for addressing an edge application, where the method includes:
a Domain Name System (DNS) server receives a first edge application access request from a terminal device, analyzes the first edge application access request and obtains a first Domain Name in the first edge application access request;
judging whether the first domain name is in an authorized domain name set obtained in advance;
under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
and sending a domain name resolution result containing the specific destination address to the terminal equipment.
In the above scheme, the method further comprises: the DNS server obtains authorization information provided by a source station of the edge application, and adds the domain name of the edge application in an authorized domain name set based on the authorization information.
In a second aspect, an embodiment of the present invention further provides a method for addressing an edge application, where the method includes:
the edge application addressing equipment receives a second edge application access request from the terminal equipment, wherein the second edge application access request is sent by the terminal equipment and is obtained through UPF transfer; the second edge application access request carries a specific address in the address field of the regional public network where the UPF is located; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
determining a plurality of edge computing nodes associated with the UPF corresponding to the specific address;
determining a first edge computing node meeting a preset condition under the condition that the edge computing nodes are all deployed with the edge application corresponding to the second edge application access request;
and sending the address of the first edge computing node to the terminal equipment.
In the foregoing solution, the determining a first edge computing node that satisfies a preset condition includes:
determining first position information of the UPF corresponding to the specific address and determining second position information of each edge computing node;
determining a distance between each edge compute node and the UPF based on the first location information and the second location information;
obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application;
and determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information.
In the above solution, the determining, based on the distance and/or the relevant operation information, the first edge computing node that meets the preset condition includes at least one of the following:
sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting preset conditions;
sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition;
and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
In a third aspect, an embodiment of the present invention further provides a DNS server, where the DNS server includes: a first communication unit and an analysis unit; wherein the content of the first and second substances,
the first communication unit is used for receiving a first edge application access request from terminal equipment;
the analysis unit is configured to analyze the first edge application access request received by the first communication unit to obtain a first domain name in the first edge application access request; judging whether the first domain name is in an authorized domain name set obtained in advance; under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
the first communication unit is further configured to send a domain name resolution result including the specific destination address to the terminal device.
In the above solution, the DNS server further includes an authorization unit;
the authorization unit is configured to obtain authorization information provided by a source station of an edge application, and add a domain name of the edge application in an authorized domain name set based on the authorization information.
In a fourth aspect, an embodiment of the present invention further provides an edge application addressing device, where the device includes: a second communication unit and a determination unit; wherein the content of the first and second substances,
the second communication unit is configured to receive a second edge application access request from a terminal device, where the second edge application access request is sent by the terminal device and obtained through UPF relay; the second edge application access request carries a specific address in the regional public network address field of the UPF; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
the determining unit is configured to determine a plurality of edge computing nodes associated with the UPF corresponding to the specific address; determining a first edge computing node meeting a preset condition under the condition that the edge computing nodes are all deployed with the edge application corresponding to the second edge application access request;
the second communication unit is further configured to send the address of the first edge computing node to the terminal device.
In the foregoing solution, the determining unit is configured to determine first location information of the UPF corresponding to the specific address, and determine second location information of each edge computing node; determining a distance between each edge compute node and the UPF based on the first location information and the second location information; obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application; and determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information.
In the foregoing solution, the determining unit is configured to determine the first edge computing node that meets the preset condition in at least one of the following manners: sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting a preset condition; sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition; and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the first aspect of the present invention; alternatively, the program is executed by a processor to implement the steps of the method according to the second aspect of the embodiment of the present invention.
In a sixth aspect, an embodiment of the present invention further provides a network device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method according to the first aspect of the embodiment of the present invention; alternatively, the processor implements the steps of the method according to the second aspect of the embodiment of the present invention when executing the program.
The embodiment of the invention provides a method for addressing an edge application and a related device, wherein the method comprises the following steps: a DNS server receives a first edge application access request from terminal equipment, analyzes the first edge application access request and obtains a first domain name in the first edge application access request; judging whether the first domain name is in an authorized domain name set obtained in advance; under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance; and sending a domain name resolution result containing the specific destination address to the terminal equipment. By adopting the technical scheme of the embodiment of the invention, the DNS server resolves the first specific resolution result in the first edge application access request into the address of the edge application addressing equipment through the authorization of the source station of the edge application, and sends the domain name resolution result containing the address of the edge application addressing equipment to the terminal equipment, so that the edge application access request sent by the terminal equipment is directed to the edge application addressing equipment, the edge application addressing equipment uniformly manages and addresses the edge application, the whole network linkage advantage is formed, the defect of edge application single-point service is avoided, the flexibility of edge application addressing is greatly improved, and the edge application access request has better stability and reliability; in addition, the technical scheme of the embodiment of the invention does not need to modify the existing network element equipment and has stronger implementation.
Drawings
FIG. 1 is a first flowchart illustrating a method for addressing an edge application according to an embodiment of the present invention;
FIG. 2 is a second flowchart illustrating a method for addressing an edge application according to an embodiment of the present invention;
FIG. 3 is a system architecture diagram illustrating an application of the method for addressing edge applications according to an embodiment of the present invention;
FIG. 4 is a schematic interaction flow diagram of a method for addressing an edge application according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a DNS server according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another component of the DNS server according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a structure of an edge application addressing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a hardware component structure of a network device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides an edge application addressing method. FIG. 1 is a first flowchart illustrating a method for addressing an edge application according to an embodiment of the present invention; as shown in fig. 1, the method includes:
step 101: a DNS server receives a first edge application access request from terminal equipment, analyzes the first edge application access request and obtains a first domain name in the first edge application access request;
step 102: judging whether the first domain name is in an authorized domain name set obtained in advance;
step 103: under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
step 104: and sending a domain name resolution result containing the specific destination address to the terminal equipment.
In an optional embodiment of the invention, the method further comprises: the DNS server obtains authorization information provided by a source station of the edge application, and adds the domain name of the edge application in an authorized domain name set based on the authorization information.
In this embodiment, the application is software installed in a computer or a mobile terminal device, and richer use experience is provided for a user. The application may be, for example, a video application, a live application, a game application, or the like, and the type of the application is not limited in this embodiment. And the edge application is application logic deployed in the edge computing node for processing application access of the terminal.
With the development of edge computing technology, edge computing nodes (which may also be referred to as edge computing servers) have emerged. The edge compute nodes are located at the edge of the network. The edge computing node may be deployed with a plurality of edge applications, for example, a source station of an application may deploy processing logic of the application in the edge computing node in a cloud computing manner, that is, the edge computing node may provide services of each application. The information interaction between the terminal equipment and the edge computing node can provide corresponding application services without passing through a core network, namely, through local processing of the edge computing node.
In this embodiment, the DNS server obtains the authorization of the source station of the edge application in advance. The source station of the edge application may be a server to which the edge application belongs. The DNS server stores a set of authorized domain names, which may be a list of authorized domain names. In some embodiments, the DNS server configures authorization information of a source station of an edge application, and adds a domain name of the edge application to the authorized domain name set based on the authorization information, to indicate that the source station of the edge application is authorized to use the method for addressing the edge application in this embodiment.
In this embodiment, for an authorized edge application, that is, an edge application corresponding to a domain name in an authorized domain name set, a DNS server receives a first edge application access request from a terminal device, and performs domain name resolution on a first domain name carried in the first edge application access request; and under the condition that the first domain name in the first edge application access request is in a pre-obtained authorized domain name set, indicating that the edge application corresponding to the first domain name is an authorized application, resolving a domain name resolution result of the first domain name into a specific destination address of pre-configured edge application addressing equipment.
In a conventional scheme, a domain name resolution result of the DNS server for the first domain name in the first edge application access request is usually the domain name of the edge application corresponding to the first edge application access request.
In the embodiment of the invention, the DNS server resolves the resolution result of the first domain name in the first edge application access request into the specific destination address of the edge application addressing device through the source station authorization of the edge application, and sends the domain name resolution result containing the specific destination address to the terminal device, so that the access request sent by the terminal device aiming at the edge application is directed to the edge application addressing device, and the edge application addressing device performs unified management and addressing scheduling on the edge application, thereby forming the advantage of whole network linkage, avoiding the defect of single-point service of the edge application, greatly improving the flexibility of the edge application addressing, and having better stability and reliability; in addition, the technical scheme of the embodiment of the invention does not need to modify the existing network element equipment and has stronger implementation.
Based on the foregoing embodiments, the embodiment of the present invention further provides a method for addressing an edge application. FIG. 2 is a second flowchart illustrating a method for addressing an edge application according to an embodiment of the present invention; as shown in fig. 2, the method includes:
step 201: the edge application addressing equipment receives a second edge application access request from the terminal equipment, wherein the second edge application access request is sent by the terminal equipment and is obtained through UPF transfer; the second edge application access request carries a specific address (hereinafter referred to as a "specific address") in the address field of the regional public network where the UPF is located; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
step 202: determining a plurality of edge computing nodes associated with the UPF corresponding to the specific address;
step 203: determining a first edge computing node meeting a preset condition under the condition that the edge computing nodes are all deployed with the edge application corresponding to the second edge application access request;
step 204: and sending the address of the first edge computing node to the terminal equipment.
The edge application addressing device in this embodiment is a newly added network device, and is specifically configured to perform unified management and addressing scheduling on edge applications of the entire network. Illustratively, the Edge application Addressing device may be specifically referred to as an Edge Addressing Scheduling (EAS) unit. Through the cooperation between the addressing equipment of the edge application and the DNS server and the UPF, the unified management and the addressing scheduling of the user access edge application are realized.
In this embodiment, because of the authorization of the source station of the edge application, the DNS server resolves the domain name resolution result of the first domain name in the first edge application access request into the address of the edge application addressing device, and then in the initial second edge application access request sent by the terminal device, the destination address is the address of the edge application addressing device. And the UPF adds a specific address in an address field of a regional public network where the UPF is located in the initial second edge application access request in the transfer process so as to form the second edge application access request. The edge application addressing device receives a second edge application access request from the terminal device, can determine the identifier of the UPF from the specific address carried in the second edge application access request, and determines the position of the UPF based on the identifier of the UPF, thereby determining the approximate area where the terminal device is located.
In some embodiments, for different areas where the UPFs are located, public network address segments corresponding to the areas may be allocated; the public network address section is provided with a plurality of public network addresses. After receiving an initial second edge application access request from the terminal device, the UPF/Network Address Translation (NAT) device selects a specific Address from the public Network Address field, converts the private Network Address of the terminal device in the initial second edge application access request into the specific Address, thereby forming the second edge application access request, and sends the second edge application access request to the edge application addressing device.
In some embodiments, the edge application addressing device is configured with NAT address pool information for all UPFs. The NAT public network address is planned in advance according to the area where the UPF is located, namely, each UPF has a specific NAT public network address pool (namely, the public network address field), so that after the edge application addressing equipment receives a second edge application access request, the area corresponding to the NAT public network address pool to which the specific address belongs is determined through the obtained specific address belonging to the public network address field, the UPF corresponding to the area is further determined, and the location of the UPF is determined.
In this embodiment, each UPF may be associated with one or more edge compute nodes. For example, in a heavily populated area, such as an office building concentration area, each office building may be deployed with one edge computing node, and multiple edge computing nodes associated with one UPF may be located in the same radio access network, so that information interaction between a terminal device and an edge computing node may provide a corresponding application service without passing through a core network, that is, by local processing of the edge computing node. Each edge compute node may have multiple edge applications deployed therein. Optionally, the plurality of edge applications deployed in each edge compute node are the same or different.
In this embodiment, the edge application addressing device may select a first edge computing node that meets a preset condition from a plurality of edge computing nodes associated with the UPF, and send an address of the edge application in the first edge computing node to the terminal device. The edge application addressing device is configured with all edge computing nodes and address information of edge applications in each edge computing node.
In an optional embodiment of the present invention, the determining a first edge computing node that satisfies a preset condition includes: determining first position information of the UPF corresponding to the specific address, and determining second position information of each edge computing node; determining a distance between each edge compute node and the UPF based on the first location information and the second location information; obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application; and determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information.
In this embodiment, on one hand, the UPF is used as a routing and forwarding node of the user plane, and the location of the UPF may be close to the network edge. The edge application addressing device may be preconfigured with the identifier of each UPF and the corresponding relationship of the location information, and it may be understood that the edge application addressing device may obtain the first location information of the UPF based on the UPF corresponding to the public network address field to which the specific address belongs. On the other hand, the edge application addressing device is further configured to perform unified management and addressing scheduling on all edge applications, and in some embodiments, the edge application addressing device may be preconfigured with information of edge computing nodes deployed by each edge application, location information of each edge computing node, and an edge computing node associated with each UPF; for example, the UPF has associated with it which edge compute nodes, which edge applications are deployed by each edge compute node, and location information for each edge compute node. The edge application addressing device may determine first location information where the UPF is based on the specific address carried in the second edge application access request, determine a plurality of edge computing nodes associated with the UPF and second location information for each edge computing node, and may determine a distance between each edge computing node and the UPF. Because the UPF is deployed at the edge of the network, the location of the UPF may be used as the approximate location of the terminal device, that is, the determined distance is an approximate distance between each edge calculation node and the terminal device.
In other embodiments, the method may further comprise: determining third location information of the terminal device, wherein the third location information can be carried in the second edge application access request; determining a distance between each edge calculation node and the terminal device based on the third location information and the second location information.
In this embodiment, the terminal device may carry its own location information (denoted as third location information) in the sent second edge application access request, and determine a distance between each edge computing node and the terminal device based on the third location information and the second location information of each edge computing node, where the distance is an actual distance between each edge computing node and the terminal device.
In this embodiment, the relevant running information of the edge application may include load information and/or health information. The load information may include load information of an edge computing node where the edge application is located and/or traffic of the edge application. The load information of the edge computing node may include the utilization rate of each resource in the edge computing node, such as the central processing unit utilization rate, the memory utilization rate, the hard disk utilization rate, and the like; it can be understood that the higher the utilization rate of resources, the greater the load; conversely, the lower the usage of each resource, the less the load. The traffic of the edge application can be the number of access requests in unit time, and the larger the number of access requests in unit time is, the larger the load can be indicated; conversely, a smaller number of access requests per unit time may indicate a smaller load. The health degree information represents the reliability degree of the edge application, and the reliability degree can be represented by the fault number of the edge application within a period of time; for example, the greater the number of faults, the lower the reliability, i.e., the smaller the health information; the fewer the number of faults, the higher the reliability, i.e. the greater the health information.
Based on this, in this embodiment, the edge application addressing device may select the first edge computing node based on the distance and/or the related operation information.
In an optional embodiment of the present invention, the determining, based on the distance and/or the relevant operation information, a first edge computing node that meets a preset condition includes at least one of: sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting a preset condition; sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition; and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
In this embodiment, the edge application addressing device may select the first edge computing node with the smallest distance, that is, select the closest first edge computing node by using the principle of proximity, or the edge application addressing device may select the first edge computing node with the smallest load, or the edge application addressing device may select the first edge computing node with the highest health degree (that is, the lowest failure rate). Of course, in this embodiment, a plurality of factors may be considered, that is, the first edge computing node is selected in combination with the distance, the load information, the health information, and the like.
For example, the distance and the related operation information may be normalized, the normalized results may be accumulated, and the first edge calculation node may be selected according to the size of the accumulated result.
For example, if there are three edge calculation nodes, the distances corresponding to the three edge calculation nodes are d1, d2, and d3; assuming that the load information is the number of faults within a time range of the utilization rate and the health degree information of the central processing unit as an example, for the distance, the maximum value of d1, d2 and d3 may be recorded as 1, the minimum value may be recorded as 0, and a normalized distance corresponding to the distance at the intermediate value is determined in proportion (the normalized distance is a decimal); similarly, regarding the number of failures, the maximum value of the number of failures is recorded as 1, the minimum value thereof is recorded as 0, and the normalized number of failures corresponding to the number of failures at the intermediate value is determined (the normalized number of failures is a decimal). Respectively adding the normalized distance, the central processing unit utilization rate and the normalized fault number corresponding to each edge computing node to obtain an addition result; and selecting the edge computing node with the minimum summation result as the first edge computing node.
In this embodiment, the edge application addressing device may determine the backup edge computing node while determining the first edge computing node. Exemplarily, the distances corresponding to the edge computing nodes are sorted from small to large, the edge computing node sorted to the first position is determined as the first edge computing node, and the edge computing node sorted to the second position is determined as the backup edge computing node; sorting the load information corresponding to the edge application in the edge computing nodes from small to large, determining the edge computing node which is sorted to the first position as the first edge computing node, and determining the edge computing node which is sorted to the second position as a backup edge computing node; and sorting the health degree information corresponding to the edge application in the edge computing nodes from small to large, determining the edge computing node with the first order as the first edge computing node, and determining the edge computing node with the second order as the backup edge computing node. In yet another example, in the above example of normalization processing, the obtained summation results may be sorted from small to large, and the edge computing node sorted on the first order may be determined as the first edge computing node, and the edge computing node sorted on the second order may be determined as the backup edge computing node.
In an optional embodiment of the invention, the method further comprises: the edge application addressing equipment receives a third edge application access request from terminal equipment, wherein the third edge application access request can carry a related message for representing the edge application fault in the first edge computing node; and sending the address of the edge application in the backup edge node to the terminal equipment so as to provide service for a user (terminal equipment) in time.
It should be noted that, in this embodiment, the access requests of the first edge application and the second edge application are both access requests for the same edge application, and the foregoing "first" and "second" are used only for distinction and have no practical meaning.
FIG. 3 is a system architecture diagram illustrating an application of the method for addressing edge applications according to an embodiment of the present invention; as shown in fig. 3, a system may include an edge application addressing facility, a UPF, and an edge compute node; wherein, a plurality of UPFs can be respectively deployed aiming at different areas; each UPF may connect one or more edge computing nodes, and each edge computing node may have multiple applications deployed therein, denoted as edge applications (edge APPs). For example, a source station of an application may deploy processing logic of the application in an edge computing node in a cloud computing manner, that is, the edge computing node may provide services of each application.
Each edge computing node may also be deployed with a Platform as a Service (PaaS), an Infrastructure as a Service (IaaS), and a corresponding Infrastructure.
Based on the foregoing embodiment and the architecture shown in fig. 3, fig. 4 is an interaction flow diagram of a method for addressing an edge application according to an embodiment of the present invention; in this embodiment, the system architecture may include: terminal device 31, local DNS server 32, DNS server 33, edge application addressing device 34, UPF 35 and edge computing node 36; in practical application, different base stations can be deployed in different areas, and each base station is connected with a UPF 35; multiple edge compute nodes 36 may be connected to each UPF 35 (only one edge compute node 36 is illustrated as being connected to each UPF 35). The solid line part in fig. 4 corresponds to the interaction process of the DNS message; the dotted part is the flow-dividing interactive process of the local message. As shown in fig. 4, the method includes:
step 301: a terminal user clicks to access a certain Application (APP) through a terminal, and triggers the terminal to initiate a DNS resolution request (which is equivalent to the first edge application access request in the embodiment of the present invention); wherein, assuming that the application address is aaa.com, the DNS resolution request carries aaa.com;
step 302: a Local DNS (Local DNS) server receives a DNS analysis request sent by a terminal, executes recursive analysis and sends a domain name analysis request to the DNS server;
step 303: the DNS server returns the domain name resolution result as the address of the addressing equipment of the edge application to the terminal according to the authorization of the source station of the application; assume the edge application addresses device address 211.1.2.3;
step 304: the local DNS server sends the domain name resolution result to the terminal, wherein the domain name resolution result is the address 211.1.2.3 of the edge application addressing equipment;
step 305: the terminal initiates an access request (which is equivalent to the second edge application access request in the embodiment of the present invention) to the edge application addressing device with the address of 211.1.2.3 based on the domain name resolution result;
step 306: the UPF receives the access request, identifies target information (namely 211.1.2.3) in the access request, matches a distribution strategy, carries out local distribution and sends the access request to the edge application addressing equipment; the UPF converts the private network address of the terminal equipment in the access request into a specific address in a local public network address field to which the UPF belongs;
step 307: the method comprises the steps that an edge application addressing device receives an access request, determines first position information of a UPF (unified Power flow) according to a specific address in the access request, determines the distance between each edge computing node and the UPF according to second position information of each edge computing node managed and maintained by the edge application addressing device, determines the load condition and health degree information of the edge application in each edge computing node, selects the first edge application according to a preset strategy, and returns the address of the first edge computing node to a terminal; assume that the address of the first edge compute node is: 211.1.1.35;
step 308: the terminal receives the address of the first edge computing node and initiates an access request to 211.1.1.35;
step 309: the UPF receives the access request, executes local distribution according to the distribution strategy matched with the destination address of 211.1.1.35, and sends the access request to the first edge computing node;
step 310: the first edge computing node receives the access request, specifically, the deployed edge application receives the access request, and executes corresponding processing logic to provide service for the first edge computing node.
The embodiment of the invention also provides a DNS server. Fig. 5 is a schematic structural diagram of a DNS server according to an embodiment of the present invention; as shown in fig. 5, the DNS server includes: a first communication unit 41 and an analysis unit 42; wherein the content of the first and second substances,
the first communication unit 41 is configured to receive a first edge application access request from a terminal device;
the analyzing unit 42 is configured to analyze the first edge application access request received by the first communication unit 41, and obtain a first domain name in the first edge application access request; judging whether the first domain name is in an authorized domain name set obtained in advance; under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
the first communication unit 41 is further configured to send a domain name resolution result including the specific destination address to the terminal device.
In an alternative embodiment of the present invention, as shown in fig. 6, the DNS server further comprises an authorization unit 43;
the authorization unit 43 is configured to obtain authorization information provided by a source station of an edge application, and add a domain name of the edge application in an authorized domain name set based on the authorization information.
In the embodiment of the present invention, the parsing Unit 42 and the authorization Unit 43 in the DNS server may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in the device in practical application; the first communication unit 41 in the DNS server can be implemented in practical applications by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, and the like) and a transceiver antenna.
It should be noted that: in the DNS server provided in the above embodiment, when addressing an edge application, only the division of each program module is taken as an example, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the DNS server is divided into different program modules to complete all or part of the processing described above. In addition, the DNS server and the edge application addressing method embodiment provided by the above embodiment belong to the same concept, and specific implementation processes thereof are described in detail in the method embodiment and are not described herein again.
The embodiment of the invention also provides edge application addressing equipment. FIG. 7 is a schematic diagram of a structure of an edge application addressing apparatus according to an embodiment of the present invention; as shown in fig. 7, the apparatus includes: a second communication unit 51 and a determination unit 52; wherein the content of the first and second substances,
the second communication unit 51 is configured to receive a second edge application access request from a terminal device, where the second edge application access request is sent by the terminal device and obtained through UPF relay; the second edge application access request carries a specific address in the regional public network address field of the UPF; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
the determining unit 52 is configured to determine a plurality of edge computing nodes associated with the UPF corresponding to the specific address; determining a first edge computing node meeting a preset condition under the condition that the edge computing nodes are all deployed with the edge application corresponding to the second edge application access request;
the second communication unit 51 is further configured to send the address of the first edge computing node to the terminal device.
In an optional embodiment of the present invention, the determining unit 52 is configured to determine first location information of the UPF corresponding to the specific address, and determine second location information of each edge computing node; determining a distance between each edge compute node and the UPF based on the first location information and the second location information; obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application; and determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information.
In an optional embodiment of the present invention, the determining unit 52 is configured to determine the first edge computing node that satisfies the preset condition in at least one of the following manners: sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting preset conditions; sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition; and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
In the embodiment of the present invention, the determining unit 52 in the edge application addressing device can be implemented by a CPU, a DSP, an MCU or an FPGA in the device in practical application; the second communication unit 51 in the edge application addressing device can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiver antenna in practical application.
It should be noted that: the edge application addressing device provided in the foregoing embodiment is only illustrated by dividing the program modules when performing edge application addressing, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the edge application addressing device and the edge application addressing method provided in the foregoing embodiments belong to the same concept, and specific implementation processes thereof are described in detail in the method embodiments, and are not described herein again.
The embodiment of the invention also provides network equipment, which can be specifically a DNS server or edge application addressing equipment. Fig. 8 is a schematic diagram of a hardware component structure of a network device according to an embodiment of the present invention, as shown in fig. 8, including a memory 62, a processor 61, and a computer program stored in the memory 62 and capable of running on the processor 61, where the processor 61, when executing the program, implements the steps of the edge application addressing method applied to the DNS server or applied to the edge application addressing device according to an embodiment of the present invention.
Optionally, the network device further includes a communication interface 63. It will be appreciated that the bus system 64 is used to enable communications among the components. The bus system 64 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 64 in fig. 8.
It will be appreciated that the memory 62 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a magnetic random access Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), synchronous Static Random Access Memory (SSRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), synchronous Dynamic Random Access Memory (SLDRAM), direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 62 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiments of the present invention may be applied to the processor 61, or implemented by the processor 61. The processor 61 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 61. The processor 61 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 61 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 62, and the processor 61 reads the information in the memory 62 and performs the steps of the aforementioned method in combination with its hardware.
In an exemplary embodiment, the network Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
In an exemplary embodiment, the present invention further provides a computer readable storage medium, such as a memory 62 comprising a computer program, which is executable by a processor 61 of a network device to perform the steps of the aforementioned method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.
A computer-readable storage medium is provided, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for addressing an edge application, where the method is applied to a DNS server or to an edge application addressing device.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
The features disclosed in the several method or apparatus embodiments provided herein may be combined in any combination to arrive at a new method or apparatus embodiment without conflict.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media capable of storing program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for addressing an edge application, the method comprising:
a Domain Name System (DNS) server receives a first edge application access request from terminal equipment, analyzes the first edge application access request and obtains a first domain name in the first edge application access request;
judging whether the first domain name is in an authorized domain name set obtained in advance; the edge application corresponding to the domain name in the authorized domain name set is an authorized edge application;
under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
sending a domain name resolution result containing the specific destination address to the terminal equipment;
the domain name resolution result is used for the terminal device to initiate a second edge application access request to the edge application addressing device corresponding to the specific destination address, the second edge application access request carries a specific address in a regional public network address field where a User Plane Function (UPF) is located, and the second edge application access request is used for requesting the edge application addressing device corresponding to the specific destination address to select a first edge computing node meeting a preset condition from a plurality of edge computing nodes associated with the UPF corresponding to the specific address based on the distance between each edge computing node and the UPF and/or the related operation information of the edge application in each edge computing node.
2. The method of claim 1, further comprising:
the DNS server obtains authorization information provided by a source station of the edge application, and adds the domain name of the edge application in an authorized domain name set based on the authorization information.
3. A method for addressing an edge application, the method comprising:
the edge application addressing equipment receives a second edge application access request from the terminal equipment, wherein the second edge application access request is sent by the terminal equipment and is obtained through the transfer of a User Plane Function (UPF); the second edge application access request carries a specific address in the regional public network address field of the UPF; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
determining a plurality of edge computing nodes associated with UPF corresponding to the specific address;
under the condition that the edge computing nodes are all provided with edge applications corresponding to the second edge application access requests, determining first position information of the UPF corresponding to the specific address and determining second position information of each edge computing node; determining a distance between each edge compute node and the UPF based on the first location information and second location information; obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application; determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information;
and sending the address of the first edge computing node to the terminal equipment.
4. The method according to claim 3, wherein the determining the first edge computing node satisfying a preset condition based on the distance and/or the related operation information comprises at least one of:
sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting a preset condition;
sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition;
and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
5. A DNS server, characterized in that the DNS server comprises: a first communication unit and an analysis unit; wherein the content of the first and second substances,
the first communication unit is used for receiving a first edge application access request from terminal equipment;
the analysis unit is configured to analyze the first edge application access request received by the first communication unit to obtain a first domain name in the first edge application access request; judging whether the first domain name is in an authorized domain name set obtained in advance; the edge application corresponding to the domain name in the authorized domain name set is an authorized edge application; under the condition that the first domain name is in an authorized domain name set obtained in advance, resolving a domain name resolution result of the first domain name into a specific destination address, wherein the specific destination address is an address of edge application addressing equipment configured in advance;
the first communication unit is further configured to send a domain name resolution result including the specific destination address to the terminal device;
the domain name resolution result is used for the terminal device to initiate a second edge application access request to the edge application addressing device corresponding to the specific destination address, where the second edge application access request carries a specific address in a regional public network address segment where a User Plane Function (UPF) is located, and the second edge application access request is used for requesting the edge application addressing device corresponding to the specific destination address to select a first edge computing node meeting a preset condition from multiple edge computing nodes associated with the UPF corresponding to the specific address based on a distance between each edge computing node and the UPF and/or related operation information of an edge application in each edge computing node.
6. The DNS server according to claim 5, wherein the DNS server further comprises an authorization unit;
the authorization unit is configured to obtain authorization information provided by a source station of an edge application, and add a domain name of the edge application in an authorized domain name set based on the authorization information.
7. An edge application addressing device, characterized in that the device comprises: a second communication unit and a determination unit; wherein the content of the first and second substances,
the second communication unit is configured to receive a second edge application access request from a terminal device, where the second edge application access request is sent by the terminal device and obtained through forwarding by a user plane function UPF; the second edge application access request carries a specific address in the address field of the regional public network where the UPF is located; the destination address of the second edge application access request is the address of the edge application addressing device obtained by the terminal device from a DNS server;
the determining unit is used for determining a plurality of edge computing nodes related to the UPF corresponding to the specific address; under the condition that the edge computing nodes are all provided with edge applications corresponding to the second edge application access requests, determining first position information of the UPF corresponding to the specific address and determining second position information of each edge computing node; determining a distance between each edge compute node and the UPF based on the first location information and second location information; obtaining relevant running information of the edge application in each edge computing node; the related operation information comprises load information and/or health degree information; the health degree information represents the reliability degree of the edge application; determining a first edge computing node meeting a preset condition based on the distance and/or the related operation information;
the second communication unit is further configured to send the address of the first edge computing node to the terminal device.
8. The apparatus according to claim 7, wherein the determining unit is configured to determine the first edge computing node that satisfies the preset condition in at least one of the following manners: sorting the distances corresponding to the edge calculation nodes, and determining the edge calculation node corresponding to the minimum distance as the first edge calculation node meeting a preset condition; sorting the load information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the minimum load information as the first edge computing node meeting a preset condition; and sequencing the health degree information corresponding to the edge application in the edge computing nodes, and determining the edge computing node corresponding to the maximum health degree information as the first edge computing node meeting preset conditions.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of claim 1 or 2; alternatively, the program realizes the steps of the method of claim 3 or 4 when executed by a processor.
10. A network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method of claim 1 or 2 when executing the program; alternatively, the processor, when executing the program, implements the steps of the method of claim 3 or 4.
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