CN110336885B - Edge node distribution method, device, scheduling server and storage medium - Google Patents
Edge node distribution method, device, scheduling server and storage medium Download PDFInfo
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- CN110336885B CN110336885B CN201910621693.9A CN201910621693A CN110336885B CN 110336885 B CN110336885 B CN 110336885B CN 201910621693 A CN201910621693 A CN 201910621693A CN 110336885 B CN110336885 B CN 110336885B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/101—Server selection for load balancing based on network conditions
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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
- H04L67/63—Routing a service request depending on the request content or context
Abstract
A method of edge node allocation, the method comprising: receiving a resource allocation request; acquiring the load condition reported by the edge node of the first area from a data server; judging whether the edge node in the first area is in a load saturation state or not according to the load condition; if so, determining a first target area with good connectivity according to the network delay stored in the data server; judging whether the audio and video stream belongs to the heat flow of the first target area or not, and judging whether unsaturated edge nodes exist in the first target area or not; and if so, returning the node identification of the unsaturated edge node of the first target area to the user terminal. The invention also provides an edge node distribution device, a scheduling server and a storage medium. The invention can reasonably schedule the edge nodes, so that the edge nodes are effectively and reasonably utilized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for edge node allocation, a scheduling server, and a storage medium.
Background
Currently, scheduling of edge nodes in a CDN (Content Delivery Network) Network is based on a geographical proximity principle to allocate nodes, and even a policy is adopted to avoid cross-region scheduling, so as to guarantee an access speed of a user.
In practice, it is found that in a CDN network supporting a live broadcast system, there are characteristics of a large number of users accessing and a large data rate, for example, an audio/video stream data is requested.
Generally, regional resources are unevenly distributed, if a region with insufficient resources has a large user access amount, sufficient edge nodes cannot be provided for a user, and if a region with sufficient resources has a small user access amount, some edge nodes cannot be effectively utilized. It can be seen that the edge nodes have poor schedulability.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an edge node allocation method, an edge node allocation apparatus, a scheduling server, and a storage medium, which can reasonably schedule edge nodes so that the edge nodes can be effectively and reasonably utilized.
A first aspect of the present invention provides an edge node allocation method, including:
receiving a resource allocation request, wherein the resource allocation request carries a first region to which a user terminal belongs and an audio/video stream required to be requested by the user terminal;
acquiring the load condition reported by the edge node of the first area from a data server;
judging whether the edge node in the first area is in a load saturation state or not according to the load condition;
if the edge node in the first area is in a load saturation state, determining a first target area with good connectivity according to network delay stored in the data server, wherein the first target area is an area other than the first area;
judging whether the audio and video stream belongs to the heat flow of the first target area or not, and judging whether unsaturated edge nodes exist in the first target area or not;
and if the audio and video stream belongs to the heat flow of the first target area and unsaturated edge nodes exist in the first target area, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal.
In a possible implementation manner, the determining, according to the network delay stored in the data server, a first target area with good connectivity performance includes:
acquiring network delay for transmitting and receiving data between the first area and a plurality of second areas from the data server;
and determining a second area with the network delay lower than a preset time threshold as a first target area.
In one possible implementation, the first target area is multiple, and the method further includes:
sequencing the first target areas from low to high according to network delay;
the judging whether the audio and video stream belongs to the heat flow of the first target area and whether the unsaturated edge node exists in the first target area comprises:
and sequentially judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not according to the sequenced plurality of first target areas.
In one possible implementation, the method further includes:
and if the audio and video stream does not belong to the heat flow of the first target area and/or the unsaturated edge node does not exist in the first target area, sending prompt information to the user terminal, wherein the prompt information is used for prompting the unavailable edge node.
In one possible implementation, the method further includes:
if the edge node in the first area is in a load unsaturated state, judging whether the audio and video stream belongs to the heat flow of the first area;
and if the audio and video stream belongs to the heat flow of the first area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
In one possible implementation, the method further includes:
if the audio and video stream does not belong to the heat flow of the first area, determining a second target area with good connectivity according to network delay stored in the data server;
judging whether the audio and video stream belongs to the heat flow of the second target area or not, and judging whether unsaturated edge nodes exist in the second target area or not;
and if the audio and video stream belongs to the heat flow of the second target area and unsaturated edge nodes exist in the second target area, returning the node identification of the unsaturated edge nodes of the second target area to the user terminal.
In one possible implementation, the method further includes:
and if the audio/video stream does not belong to the heat flow of the second target area and/or the unsaturated edge node does not exist in the second target area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
A second aspect of the present invention provides an edge node assigning apparatus, the apparatus comprising:
the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a resource allocation request, and the resource allocation request carries a first area to which a user terminal belongs and audio and video streams required by the user terminal;
an obtaining module, configured to obtain, from a data server, a load condition reported by an edge node in the first area;
the first judgment module is used for judging whether the edge node in the first area is in a load saturation state or not according to the load condition;
a determining module, configured to determine, if an edge node in the first area is in a load saturation state, a first target area with good connectivity according to network latency stored in the data server, where the first target area is an area other than the first area;
the second judgment module is used for judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not;
and the sending module is used for returning the node identifier of the unsaturated edge node of the first target area to the user terminal if the audio and video stream belongs to the heat flow of the first target area and the unsaturated edge node exists in the first target area.
A third aspect of the present invention provides a scheduling server comprising a processor and a memory, the processor being configured to implement the edge node allocation method when executing a computer program stored in the memory.
A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the edge node allocation method.
By the technical scheme, when the resource allocation request is received, the load condition reported by the edge node of the first area can be obtained from the data server, judging whether the edge node in the first area is in a load saturation state or not according to the load condition, if the edge node in the first area is in the load saturation state, determining a first target area with good connectivity according to the network delay stored in the data server, further, judging whether the audio/video stream belongs to the heat flow of the first target area, and judging whether the first target area has unsaturated edge nodes, and if the audio and video stream belongs to the heat flow of the first target area and the first target area has unsaturated edge nodes, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal. Therefore, in the invention, when the user terminal sends the resource allocation request to the scheduling server, the scheduling server can judge whether the edge node is selected by crossing the regions or not by combining the load balancing strategy, the communication performance among the regions and the heat flow convergence principle, thereby reasonably scheduling the edge node and effectively and reasonably utilizing the edge node.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an architecture diagram of an edge node scheduling system according to the present disclosure.
Fig. 2 is a flowchart of a preferred embodiment of an edge node distribution method disclosed in the present invention.
FIG. 3 is a flow chart of another preferred embodiment of an edge node distribution method disclosed in the present invention.
Fig. 4 is a functional block diagram of an edge node distribution apparatus according to a preferred embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a dispatch server implementing a preferred embodiment of the edge node assignment method of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is an architecture diagram of an edge node scheduling system according to the present disclosure. As shown in fig. 1, the edge node scheduling system includes user terminals in different areas (e.g., a user terminal a in an area a, a user terminal B in an area B), edge nodes in different areas (e.g., an edge node 1 in an area a, an edge node 2 … …, an edge node M in an area B, an edge node 1 in an area B, an edge node 2 … …, an edge node N), a scheduling server, dial testing servers in different areas, and dial testing clients (e.g., a dial testing server a and a dial testing client a in an area a, a dial testing server B and a dial testing client B in an area B). The user terminal of each area may include a plurality of terminals, and the dial testing server and the dial testing client of each area may include a plurality of terminals, which are not shown in the figure. The edge node scheduling system shown in fig. 1 may include, but is not limited to, the devices shown in the figure, and may also include other devices, such as a data server (not shown in the figure), for example.
The user terminal may include, but is not limited to, any electronic product that can perform human-computer interaction with a user through a keyboard, a mouse, a remote controller, a touch panel, or a voice control device, for example, a personal computer, a tablet computer, a smart phone, a personal digital assistant PDA, a game console, an interactive network television IPTV, an intelligent wearable device, and the like. When a user needs to play a certain audio/video stream (such as playing a song), the user can request the scheduling server to allocate resources through the user terminal, and after obtaining the identifier of the edge node, the user terminal can send an acquisition request of the audio/video stream to the edge node and receive the audio/video stream returned by the edge node. In addition, the user terminal needs to report the data stream requested to be played to the data server at preset time intervals.
Where a dispatch server may refer to a computer system that can provide services to other devices (e.g., user terminals) in a network. The scheduling server is mainly responsible for allocating edge nodes for each user terminal requesting resource allocation. When the scheduling server receives a resource allocation request sent by a user terminal, the scheduling server needs to pull the load condition reported by the edge node from the data server, and judges whether the edge node is selected by crossing the regions according to the load condition of the edge node, the communication performance among the regions and a heat flow convergence principle.
The edge node is a network node which has fewer intermediate links from the final access user, and has better response capability and connection speed for the final access user. The edge node is used for storing the webpage content and the objects with larger access amount on a special cache (cache) device at the front end of the server, so that the speed and the quality of website access are improved. After the edge node is distributed to the user terminal by the scheduling server, the audio/video stream requested by the edge node is output to the user terminal, and in addition, the load condition of the edge node is required to be reported to the data server at preset time intervals.
And the dial testing server is deployed on each edge node and waits for the connection of the dial testing client. And after receiving the dial testing data packet sent by the dial testing client, returning the corresponding data packet to the dial testing client.
The dial testing client is deployed on equipment similar to the user terminal in each area, is connected with the dial testing server at regular time in a preset period (such as 15 seconds) and sends a dial testing data packet, receives a response data packet returned by the dial testing server, calculates a time difference (network delay) between sending and receiving of the data packet, and reports the time difference to the data platform.
In the edge node scheduling system shown in fig. 1, when a user terminal a requests a resource node from a scheduling server, the scheduling server may determine that a B region is an excellent region according to a dial test result between a dial test client a and a dial test server B, and select an edge node 2 from the B region according to a heat flow aggregation principle and a load balancing policy, and return a node identifier of the edge node 2 in the B region to the user terminal a, the user terminal a may send an acquisition request for an audio/video stream to the edge node 2 in the B region, and the edge node 2 in the B region may provide a service to the user terminal a and return data of the audio/video stream to the user terminal a, so that the edge node can be reasonably scheduled, and the edge node is effectively and reasonably utilized.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for distributing edge nodes according to a preferred embodiment of the present invention. The order of the steps in the flowchart may be changed, and some steps may be omitted.
S11, the scheduling server receives the resource allocation request.
In the embodiment of the invention, when a user to which a user terminal belongs needs to request to play a certain audio and video, the user can firstly send a resource allocation request to a scheduling server through the user terminal.
The resource allocation request carries a first region to which the user terminal belongs and audio and video streams required to be requested by the user terminal.
The first area is an area where the current geographical location of the user terminal is located, such as a province and a city.
And S12, the scheduling server acquires the load condition reported by the edge node of the first area from the data server.
The edge nodes in all the areas can report respective load conditions to the data server periodically. Wherein the first edge node is an edge node in all regions.
Wherein, the load condition can be classified as load saturation and load non-saturation. The judgment can be performed according to resource consumption conditions of the CPU, the memory, the bandwidth, and the like of the edge node in the area, and if the resource consumption of the CPU, the memory, the bandwidth, and the like of the edge node in the area exceeds a preset resource consumption threshold, it can be determined that the edge node in the area is in a load saturation state. On the contrary, if the resource consumption of the CPU, the memory, the bandwidth, and the like of the edge node in the area does not exceed the preset resource consumption threshold, it may be determined that the edge node in the area is in the load unsaturated state.
And S13, the scheduling server judges whether the edge nodes in the first area are in a load saturation state according to the load condition, if so, the step S14 is executed, and if not, the process is ended.
The scheduling server needs to search for an edge node according to a load balancing policy, and if the scheduling server determines that the edge node in the first area is in a load saturation state according to the load condition, it indicates that no available edge node in the first area can provide service for the user terminal, so the scheduling server needs to search for an edge node capable of providing service for the user terminal across areas.
As an optional implementation, the method further comprises:
if the edge node in the first area is in a load unsaturated state, judging whether the audio and video stream belongs to the heat flow of the first area;
and if the audio and video stream belongs to the heat flow of the first area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
When each user terminal needs to request to play a certain data stream (such as an audio/video stream), each user terminal reports an identifier of the data stream requested by the user terminal to a data server. The scheduling server can pull the identifications of the data streams reported by all the user terminals in a certain area from the data server periodically, and count the number of users requesting the data streams; and judging whether the data stream belongs to the heat flow of the area or not according to the user number and the preset user number threshold. If the number of users requesting a certain data stream exceeds the preset user number threshold, it can be determined that the data stream is the heat stream of the area.
When the user terminal needs to play the audio/video stream and requests the resources of the edge node, the node resources which serve the audio/video stream are allocated to the user terminal as much as possible, so as to achieve the effect of stream convergence. For example, when the user terminal a in province a requests a certain flow, the scheduling server finds that the flow is cold in province a (that is, the number of users of the user terminal requesting the flow in province a is less than a preset user number threshold, for example, 50), and does not allocate the node in province a to the user terminal a, but searches for the edge node in province B where the flow is hot and allocates the edge node to the user terminal a, so as to achieve the effect of the flow convergence.
The edge node provides data stream service for the user terminal, and needs to pull data from the source station, and the edge node pulls a stream to serve multiple user terminals without returning the source for each user terminal. Based on the heat flow convergence principle, the frequency of returning the source is reduced, the bandwidth consumption is reduced, and the time for returning the source is saved, so that the user terminal can be responded more quickly.
In this optional embodiment, if the edge node in the first area is not in a load saturation state, based on a heat flow aggregation principle, it is further required to determine whether an audio/video stream carried by the resource allocation request belongs to a heat flow of the first area, and if the audio/video stream belongs to the heat flow of the first area, any unsaturated edge node may be directly selected from the first area (that is, the area) and a node identifier of the unsaturated edge node of the first area is returned to the user terminal, so as to achieve the purposes of reducing the number of times of returning to the source, reducing bandwidth consumption, and responding to the user terminal more quickly. Wherein the node identification is e.g. IP address, port.
And if the edge node is not enough, randomly selecting a node from other nodes.
As an optional implementation, the method further comprises:
if the audio and video stream does not belong to the heat flow of the first area, determining a second target area with good connectivity according to network delay stored in the data server;
judging whether the audio and video stream belongs to the heat flow of the second target area or not, and judging whether unsaturated edge nodes exist in the second target area or not;
and if the audio and video stream belongs to the heat flow of the second target area and unsaturated edge nodes exist in the second target area, returning the node identification of the unsaturated edge nodes of the second target area to the user terminal.
In this optional embodiment, if the audio/video stream does not belong to the heat flow of the first region, the scheduling server may select an edge node across regions based on a heat flow convergence principle.
The dial testing client in the first area sends dial testing data packets to the dial testing servers in other areas (areas except the first area) periodically (for example, 15 seconds), receives response data packets returned by the dial testing servers in the other areas, calculates a time difference (namely network delay) between sending of the data packets and receiving of the response data packets, and reports the time difference to the data server.
Specifically, when the audio/video stream does not belong to the heat flow of the first region, a second target region with good connectivity performance may be determined according to the network delay stored in the data server, for example, a region with a network delay lower than a preset time threshold (e.g., 200 milliseconds) is determined as the second target region. Generally, the smaller the network delay, the better the connectivity between the two areas. After a second target area is determined, whether the audio/video stream belongs to a heat flow of the second target area or not may be further determined, and whether an unsaturated edge node exists in the second target area or not may be further determined, if the audio/video stream belongs to the heat flow of the second target area and the unsaturated edge node exists in the second target area, the dispatch server may arbitrarily select an unsaturated edge node from the second target area, and return a node identifier of any unsaturated edge node of the second target area to the user terminal.
As an optional implementation, the method further comprises:
and if the audio/video stream does not belong to the heat flow of the second target area and/or the unsaturated edge node does not exist in the second target area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
In this optional embodiment, if the audio/video stream does not belong to the heat stream of the second target area, and/or if no unsaturated edge node exists in the second target area, which indicates that no condition that the second target area meets the requirement of searching for an edge node across areas exists, the scheduling server needs to search for an edge node from the first area (i.e., the local area), and return a node identifier of any unsaturated edge node of the first area to the user terminal.
And if the edge node is not enough, randomly selecting a node from other nodes.
And S14, the scheduling server determines a first target area with good connectivity according to the network delay stored in the data server.
Wherein the first target area is an area other than the first area.
Specifically, the determining a first target area with good connectivity according to the network latency stored in the data server includes:
acquiring network delay for transmitting and receiving data between the first area and a plurality of second areas from the data server;
and determining a second area with the network delay lower than a preset time threshold as a first target area.
The dial testing client in the first area sends dial testing data packets to the dial testing servers in a plurality of second areas (other areas except the first area) periodically (for example, 15 seconds), receives response data packets returned by the dial testing servers in each second area, calculates a time difference (namely network delay) between sending of the data packets and receiving of the response data packets, and reports the time difference to the data server.
The scheduling server may periodically obtain a network delay of transceiving data between the first area and a plurality of second areas from the data server, and determine a second area having a network delay lower than a preset time threshold (e.g., 200 ms) as the first target area. Generally, the smaller the network delay, the better the connectivity between the two areas. By selecting the excellent region in this way, the response speed of the user can be ensured.
And S15, the scheduling server judges whether the audio and video stream belongs to the heat flow of the first target area or not, and judges whether unsaturated edge nodes exist in the first target area or not, if so, the step S16 is executed, and if not, the process is ended.
Based on a heat flow convergence principle, the scheduling server can periodically acquire the identifiers of the audio and video streams reported by all the user terminals in the first target area, and count the number of users requesting the audio and video streams; and meanwhile, based on a load balancing strategy, the scheduling server can also regularly acquire the load condition of an edge node of a first target area stored on the data server, judge whether an unsaturated edge node exists in the first target area according to the load condition, and if the scheduling server judges that the audio and video stream belongs to the heat flow of the first target area and the unsaturated edge node exists in the first target area, which indicates that a heat flow convergence principle and a load balancing strategy are met, the scheduling server returns a node identifier of the unsaturated edge node of the first target area to the user terminal.
Optionally, there are a plurality of the first target regions, and the method further includes:
sequencing the first target areas from low to high according to network delay;
the judging whether the audio and video stream belongs to the heat flow of the first target area and whether the unsaturated edge node exists in the first target area comprises:
and sequentially judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not according to the sequenced plurality of first target areas.
In this optional embodiment, the scheduling server determines that there are multiple first target areas, may sequence the multiple first target areas from low to high according to network delay, that is, the lower the network delay, the earlier the ranking is, further, may sequentially determine whether the audio/video stream belongs to the heat flow of the first target area according to the sequenced multiple first target areas, and determine whether there is an unsaturated edge node in the first target area, for example, if the audio/video stream belongs to the heat flow of the first target area ranked first, and there is an unsaturated edge node in the first target area ranked first, then it is not necessary to determine the first target area ranked (for example, ranked second) again.
As an optional implementation, the method further comprises:
and if the audio and video stream does not belong to the heat flow of the first target area and/or the unsaturated edge node does not exist in the first target area, sending prompt information to the user terminal, wherein the prompt information is used for prompting the unavailable edge node.
In this optional implementation, based on a load balancing policy and a heat flow aggregation principle, if an edge node in the first region is in a load saturation state, the audio/video stream does not belong to the heat flow of the first target region, and/or an unsaturated edge node does not exist in the first target region, which indicates that no available shared edge node exists in the first target region, no matter in the first target region or across the first target region, a prompt message may be returned to the user terminal, where the prompt message is used to prompt that no available edge node exists.
S16, the scheduling server returns the node identification of the unsaturated edge node of the first target area to the user terminal.
Wherein the node identifies, for example, an IP address, a port number, etc. of the edge node.
After determining that the edge node in the first area is in a load saturation state, the audio/video stream belongs to the heat flow of the first target area, and an unsaturated edge node exists in the first target area, the scheduling server may return a node identifier of any unsaturated edge node of the first target area to the user terminal.
In the method flow described in fig. 2, when a resource allocation request is received, the load condition reported by the edge node in the first area may be obtained from a data server, judging whether the edge node in the first area is in a load saturation state or not according to the load condition, if the edge node in the first area is in the load saturation state, determining a first target area with good connectivity according to the network delay stored in the data server, further, judging whether the audio/video stream belongs to the heat flow of the first target area, and judging whether the first target area has unsaturated edge nodes, and if the audio and video stream belongs to the heat flow of the first target area and the first target area has unsaturated edge nodes, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal. Therefore, in the invention, when the user terminal sends the resource allocation request to the scheduling server, the scheduling server can judge whether the edge node is selected by crossing the regions or not by combining the load balancing strategy, the communication performance among the regions and the heat flow convergence principle, thereby reasonably scheduling the edge node and effectively and reasonably utilizing the edge node.
The above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it will be apparent to those skilled in the art that modifications may be made without departing from the inventive concept of the present invention, and these modifications are within the scope of the present invention.
Referring to fig. 3, fig. 3 is a flowchart illustrating another edge node allocation method according to another embodiment of the present disclosure. The order of the steps in the flowchart may be changed, and some steps may be omitted.
S21 the scheduling server receives the resource allocation request.
The resource allocation request carries a first region to which the user terminal belongs and audio and video streams required to be requested by the user terminal.
S22 the scheduling server obtains the load status reported by the edge node in the first area from the data server.
S23 the dispatch server determines whether the edge node in the first area is in the load saturation state according to the load condition, if yes, step S24 is executed, and if not, step S27 is executed.
And S24, the scheduling server determines a first target area with good connectivity according to the network delay stored in the data server.
S25 the scheduling server determines whether the audio/video stream belongs to the heat flow of the first target region, and determines whether there is an unsaturated edge node in the first target region, if yes, execute step S26, and if no, execute step S213.
S26 the scheduling server returns the node id of the unsaturated edge node of the first target area to the user terminal, and ends the process.
S27 the scheduling server judges whether the audio and video stream belongs to the heat flow of the first area, if so, the step S28 is executed, and if not, the step S29 is executed.
S28 the scheduling server returns the node id of the unsaturated edge node of the first area to the user terminal, and ends the process.
And S29, the scheduling server determines a second target area with good connectivity according to the network delay stored in the data server.
S210 the scheduling server determines whether the audio/video stream belongs to the heat flow of the second target region, and determines whether there is an unsaturated edge node in the second target region, if yes, execute step S211, and if not, execute step S212.
S211, the scheduling server returns the node identifier of the unsaturated edge node of the second target area to the user equipment, and ends the process.
S212 the scheduling server returns the node identifier of the unsaturated edge node of the first area to the user terminal, and ends the process.
S213 the scheduling server sends a prompt to the ue, and ends the process.
The above steps S21 to S213 may refer to the related description in the embodiment corresponding to fig. 2, and are not repeated herein.
In the method flow described in fig. 3, when the user terminal sends a resource allocation request to the scheduling server, the scheduling server may determine whether to select an edge node across regions by combining a load balancing policy, connectivity between regions, and a heat flow convergence principle, so as to reasonably schedule the edge node, and effectively and reasonably utilize the edge node.
Referring to fig. 4, fig. 4 is a functional block diagram of a preferred embodiment of an edge node distribution apparatus according to the present disclosure.
In some embodiments, the edge node assigning means is run in a scheduling server. The edge node assigning means may comprise a plurality of functional modules consisting of program code segments. The program codes of the respective program segments in the edge node allocation apparatus may be stored in the memory and executed by at least one processor to perform part or all of the steps in the edge node allocation method described in fig. 2 or fig. 3, which may specifically refer to the relevant steps in the edge node allocation method described in fig. 2 or fig. 3, and are not described herein again.
In this embodiment, the edge node allocating apparatus may be divided into a plurality of functional modules according to the functions executed by the edge node allocating apparatus. The functional module may include: the device comprises a receiving module 401, an obtaining module 402, a first judging module 403, a determining module 404, a second judging module 405 and a sending module 406. The module referred to herein is a series of computer program segments capable of being executed by at least one processor and capable of performing a fixed function and is stored in memory. In some embodiments, the functionality of the modules will be described in greater detail in subsequent embodiments.
A receiving module 401, configured to receive a resource allocation request, where the resource allocation request carries a first region to which a user terminal belongs and an audio/video stream that the user terminal needs to request;
an obtaining module 402, configured to obtain, from a data server, a load condition reported by an edge node in the first area;
a first determining module 403, configured to determine whether an edge node in the first area is in a load saturation state according to the load condition;
a determining module 404, configured to determine, if an edge node in the first area is in a load saturation state, a first target area with good connectivity according to network delay stored in the data server;
specifically, the determining module 404 determines, according to the network delay stored in the data server, that the first target area with good connectivity performance includes:
acquiring network delay for transmitting and receiving data between the first area and a plurality of second areas from the data server;
and determining a second area with the network delay lower than a preset time threshold as a first target area.
A second determining module 405, configured to determine whether the audio/video stream belongs to a heat flow of the first target region, and determine whether an unsaturated edge node exists in the first target region;
optionally, there are a plurality of first target areas, and the edge node allocating apparatus further includes:
the sequencing module is used for sequencing the first target areas from low to high according to the network delay;
the second determining module 405 determines whether the audio/video stream belongs to the heat flow of the first target region, and whether an unsaturated edge node exists in the first target region includes:
and sequentially judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not according to the sequenced plurality of first target areas.
A sending module 406, configured to return a node identifier of an unsaturated edge node of the first target area to the user terminal if the audio/video stream belongs to the heat flow of the first target area and the first target area has the unsaturated edge node.
Optionally, the sending module 406 is further configured to send a prompt message to the user terminal if the audio/video stream does not belong to the heat flow of the first target area and/or no unsaturated edge node exists in the first target area, where the prompt message is used to prompt that no available edge node exists.
Optionally, the first determining module 403 is further configured to determine whether the audio/video stream belongs to a heat flow of the first area if the edge node in the first area is in a load unsaturated state;
the sending module 406 is further configured to return a node identifier of an unsaturated edge node of the first area to the user terminal if the audio/video stream belongs to the heat flow of the first area.
Optionally, the determining module 404 is further configured to determine, if the audio/video stream does not belong to the heat flow of the first area, a second target area with good connectivity according to the network delay stored in the data server;
the second determining module 405 is further configured to determine whether the audio/video stream belongs to a heat flow of the second target region, and determine whether an unsaturated edge node exists in the second target region;
the sending module 406 is further configured to return a node identifier of an unsaturated edge node of the second target area to the user terminal if the audio/video stream belongs to the heat flow of the second target area and the second target area has the unsaturated edge node.
Optionally, the sending module 406 is further configured to return a node identifier of an unsaturated edge node in the first region to the user terminal if the audio/video stream does not belong to the heat flow of the second target region and/or the second target region does not have an unsaturated edge node.
In the edge node allocation apparatus described in fig. 4, when the user terminal sends a resource allocation request to the scheduling server, the scheduling server may determine whether to select an edge node across regions by combining a load balancing policy, connectivity performance between regions, and a heat flow aggregation principle, so as to reasonably schedule the edge node, and effectively and reasonably utilize the edge node.
As shown in fig. 5, fig. 5 is a schematic structural diagram of a scheduling server according to a preferred embodiment of the method for implementing edge node allocation. The dispatch server 5 includes a memory 51, at least one processor 52, a computer program 53 stored in the memory 51 and executable on the at least one processor 52, and at least one communication bus 54.
Those skilled in the art will appreciate that the schematic diagram shown in fig. 5 is merely an example of the scheduling server 5, and does not constitute a limitation to the scheduling server 5, and may include more or less components than those shown, or combine some components, or different components, for example, the scheduling server 5 may further include input and output devices, network access devices, and the like.
The dispatch server 5 may also include, but is not limited to, any electronic product capable of interacting with a user through a keyboard, a mouse, a remote controller, a touch panel, or a voice control device, for example, a Personal computer, a tablet computer, a smart phone, a Personal Digital Assistant (PDA), a game console, an Internet Protocol Television (IPTV), and a smart wearable device. The Network where the scheduling server 5 is located includes, but is not limited to, the internet, a wide area Network, a metropolitan area Network, a local area Network, a Virtual Private Network (VPN), and the like.
The at least one Processor 52 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The processor 52 may be a microprocessor or the processor 52 may be any conventional processor or the like, and the processor 52 is a control center of the dispatch server 5 and connects the various parts of the entire dispatch server 5 using various interfaces and lines.
The memory 51 may be used to store the computer program 53 and/or the module/unit, and the processor 52 implements various functions of the dispatch server 5 by running or executing the computer program and/or the module/unit stored in the memory 51 and calling data stored in the memory 51. The memory 51 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the scheduling server 5, and the like. Further, the memory 51 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
With reference to fig. 1 to 3, the memory 51 in the scheduling server 5 stores a plurality of instructions to implement an edge node allocation method, and the processor 52 can execute the plurality of instructions to implement:
receiving a resource allocation request, wherein the resource allocation request carries a first region to which a user terminal belongs and an audio/video stream required to be requested by the user terminal;
acquiring the load condition reported by the edge node of the first area from a data server;
judging whether the edge node in the first area is in a load saturation state or not according to the load condition;
if the edge node in the first area is in a load saturation state, determining a first target area with good connectivity according to network delay stored in the data server;
judging whether the audio and video stream belongs to the heat flow of the first target area or not, and judging whether unsaturated edge nodes exist in the first target area or not;
and if the audio and video stream belongs to the heat flow of the first target area and unsaturated edge nodes exist in the first target area, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal.
In an optional implementation manner, the determining, according to the network latency stored in the data server, a first target area with good connectivity performance includes:
acquiring network delay for transmitting and receiving data between the first area and a plurality of second areas from the data server;
and determining a second area with the network delay lower than a preset time threshold as a first target area.
In an alternative embodiment, where there are a plurality of the first target areas, the processor 52 may execute the plurality of instructions to:
sequencing the first target areas from low to high according to network delay;
the judging whether the audio and video stream belongs to the heat flow of the first target area and whether the unsaturated edge node exists in the first target area comprises:
and sequentially judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not according to the sequenced plurality of first target areas.
In an alternative embodiment, the processor 52 may execute the plurality of instructions to implement:
and if the audio and video stream does not belong to the heat flow of the first target area and/or the unsaturated edge node does not exist in the first target area, sending prompt information to the user terminal, wherein the prompt information is used for prompting the unavailable edge node.
In an alternative embodiment, the processor 52 may execute the plurality of instructions to implement:
if the edge node in the first area is in a load unsaturated state, judging whether the audio and video stream belongs to the heat flow of the first area;
and if the audio and video stream belongs to the heat flow of the first area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
In an alternative embodiment, the processor 52 may execute the plurality of instructions to implement:
if the audio and video stream does not belong to the heat flow of the first area, determining a second target area with good connectivity according to network delay stored in the data server;
judging whether the audio and video stream belongs to the heat flow of the second target area or not, and judging whether unsaturated edge nodes exist in the second target area or not;
and if the audio and video stream belongs to the heat flow of the second target area and unsaturated edge nodes exist in the second target area, returning the node identification of the unsaturated edge nodes of the second target area to the user terminal.
In an alternative embodiment, the processor 52 may execute the plurality of instructions to implement:
and if the audio/video stream does not belong to the heat flow of the second target area and/or the unsaturated edge node does not exist in the second target area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
Specifically, the processor 52 may refer to the description of the relevant steps in the embodiment corresponding to fig. 2, and details thereof are not repeated herein.
In the scheduling server 5 depicted in fig. 5, when receiving the resource allocation request, the load condition reported by the edge node in the first area may be obtained from the data server, judging whether the edge node in the first area is in a load saturation state or not according to the load condition, if the edge node in the first area is in the load saturation state, determining a first target area with good connectivity according to the network delay stored in the data server, further, judging whether the audio/video stream belongs to the heat flow of the first target area, and judging whether the first target area has unsaturated edge nodes, and if the audio and video stream belongs to the heat flow of the first target area and the first target area has unsaturated edge nodes, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal. Therefore, in the invention, when the user terminal sends the resource allocation request to the scheduling server, the scheduling server can judge whether the edge node is selected by crossing the regions or not by combining the load balancing strategy, the communication performance among the regions and the heat flow convergence principle, thereby reasonably scheduling the edge node and effectively and reasonably utilizing the edge node.
The modules/units integrated by the dispatch server 5, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are 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 module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. An edge node allocation method applied to a scheduling server is characterized by comprising the following steps:
receiving a resource allocation request, wherein the resource allocation request carries a first region to which a user terminal belongs and an audio/video stream required to be requested by the user terminal;
acquiring the load condition reported by the edge node of the first area from a data server;
judging whether the edge node in the first area is in a load saturation state or not according to the load condition;
if the edge node in the first area is in a load saturation state, determining a first target area with good connectivity according to network delay stored in the data server, wherein the first target area is an area other than the first area;
judging whether the audio and video stream belongs to the heat flow of the first target area or not, judging whether unsaturated edge nodes exist in the first target area or not, and if the number of users requesting the audio and video stream in the first target area exceeds a preset number of users threshold, judging that the audio and video stream belongs to the heat flow of the first target area;
and if the audio and video stream belongs to the heat flow of the first target area and unsaturated edge nodes exist in the first target area, returning the node identification of the unsaturated edge nodes of the first target area to the user terminal.
2. The method of claim 1, wherein the determining the first target area with good connectivity performance according to the network latency stored in the data server comprises:
acquiring network delay for transmitting and receiving data between the first area and a plurality of second areas from the data server;
and determining a second area with the network delay lower than a preset time threshold as a first target area.
3. The method of claim 2, wherein there are a plurality of said first target areas, said method further comprising:
sequencing the first target areas from low to high according to network delay;
the judging whether the audio and video stream belongs to the heat flow of the first target area and whether the unsaturated edge node exists in the first target area comprises:
and sequentially judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether unsaturated edge nodes exist in the first target area or not according to the sequenced plurality of first target areas.
4. The method according to any one of claims 1 to 3, further comprising:
and if the audio and video stream does not belong to the heat flow of the first target area and/or the unsaturated edge node does not exist in the first target area, sending prompt information to the user terminal, wherein the prompt information is used for prompting the unavailable edge node.
5. The method according to any one of claims 1 to 3, further comprising:
if the edge node in the first area is in a load unsaturated state, judging whether the audio and video stream belongs to the heat flow of the first area;
and if the audio and video stream belongs to the heat flow of the first area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
6. The method of claim 5, further comprising:
if the audio and video stream does not belong to the heat flow of the first area, determining a second target area with good connectivity according to network delay stored in the data server;
judging whether the audio and video stream belongs to the heat flow of the second target area or not, and judging whether unsaturated edge nodes exist in the second target area or not;
and if the audio and video stream belongs to the heat flow of the second target area and unsaturated edge nodes exist in the second target area, returning the node identification of the unsaturated edge nodes of the second target area to the user terminal.
7. The method of claim 6, further comprising:
and if the audio/video stream does not belong to the heat flow of the second target area and/or the unsaturated edge node does not exist in the second target area, returning the node identification of the unsaturated edge node of the first area to the user terminal.
8. An edge node assignment arrangement, the arrangement comprising:
the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a resource allocation request, and the resource allocation request carries a first area to which a user terminal belongs and audio and video streams required by the user terminal;
an obtaining module, configured to obtain, from a data server, a load condition reported by an edge node in the first area;
the first judgment module is used for judging whether the edge node in the first area is in a load saturation state or not according to the load condition;
a determining module, configured to determine, if an edge node in the first area is in a load saturation state, a first target area with good connectivity according to network latency stored in the data server, where the first target area is an area other than the first area;
the second judgment module is used for judging whether the audio and video stream belongs to the heat flow of the first target area or not and judging whether an unsaturated edge node exists in the first target area or not, and if the number of users requesting the audio and video stream in the first target area exceeds a preset user number threshold, the audio and video stream belongs to the heat flow of the first target area;
and the sending module is used for returning the node identifier of the unsaturated edge node of the first target area to the user terminal if the audio and video stream belongs to the heat flow of the first target area and the unsaturated edge node exists in the first target area.
9. A scheduling server, characterized in that the scheduling server comprises a processor and a memory, the processor being configured to execute a computer program stored in the memory to implement the edge node allocation method according to any one of claims 1 to 7.
10. A computer-readable storage medium storing at least one instruction which, when executed by a processor, implements an edge node allocation method according to any one of claims 1 to 7.
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| CN110995827B (en) * | 2019-11-29 | 2022-01-07 | 腾讯科技（深圳）有限公司 | Communication processing method and device, computer readable medium and electronic equipment |
| CN111131272B (en) * | 2019-12-27 | 2022-01-11 | 广州酷狗计算机科技有限公司 | Scheduling method, device and system of stream server, computing equipment and storage medium |
| CN113132437B (en) * | 2019-12-31 | 2024-01-23 | 中兴通讯股份有限公司 | CDN scheduling method, CDN scheduling system, CDN scheduling equipment and storage medium |
| CN113127414B (en) * | 2019-12-31 | 2023-05-23 | 贵州白山云科技股份有限公司 | Request processing method and system and edge node |
| CN113472822A (en) * | 2020-03-30 | 2021-10-01 | 中移(上海)信息通信科技有限公司 | Data distribution method, device, equipment and medium |
| CN114553964A (en) * | 2020-11-20 | 2022-05-27 | 中移动信息技术有限公司 | Control method, device and equipment of simulcast system and simulcast system |
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| CN113873025B (en) * | 2021-09-24 | 2023-12-08 | 中国农业银行股份有限公司 | Data processing method and device, storage medium and electronic equipment |
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