CN106533760B - Method and device for constructing CDN system in CM network - Google Patents

Method and device for constructing CDN system in CM network Download PDF

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CN106533760B
CN106533760B CN201610998952.6A CN201610998952A CN106533760B CN 106533760 B CN106533760 B CN 106533760B CN 201610998952 A CN201610998952 A CN 201610998952A CN 106533760 B CN106533760 B CN 106533760B
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resource
media
cdn
list
response
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CN106533760A (en
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张神力
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Shenzhen Skyworth Digital Technology Co Ltd
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Shenzhen Skyworth Digital Technology Co Ltd
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Priority to CN201610998952.6A priority Critical patent/CN106533760B/en
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Priority to PCT/CN2017/110382 priority patent/WO2018086575A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/14—Network analysis or design
    • H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS

Abstract

The embodiment of the invention discloses a method and a device for constructing a CDN system in a CM network. The method comprises the following steps: the CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.

Description

Method and device for constructing CDN system in CM network
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for constructing a CDN system in a CM network.
Background
In recent years, bidirectional services are vigorously developed by broadcasting and television, and services such as video on demand are basic services in the field of broadcasting and television. An important technology in video on demand services is a Content Delivery Network (CDN) system. The CDN system aims to avoid bottlenecks and links which possibly influence the data transmission speed and stability on the Internet as far as possible, so that the content transmission is faster and more stable. By placing node servers at various positions of the network to form a layer of intelligent virtual network on the basis of the existing internet, the CDN system can redirect the request of a user to a service node closest to the user in real time according to network flow, connection of each node, load condition, distance to the user, response time and other comprehensive information. The method aims to enable the user to obtain the required content nearby, solve the problem of congestion of the Internet network and improve the response speed of the user for accessing the website.
Currently, in the existing CDN system, the edge server is installed in the front end or sub-front end machine room. This approach can result in high construction costs; the network is prone to congestion and cannot make full use of terminal resources.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for constructing a CDN system in a CM network, aiming at solving the problems of fully utilizing terminal hardware resources and reducing the construction cost of the CDN system.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a method for constructing a CDN system in a CM network includes:
the CDN resource strategy server inquires a resource list;
the CDN resource strategy server judges whether media resources are in the resource list or not;
if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition;
the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Preferably, the resource list includes a resource identifier, a resource name, a resource description, a resource type, and a resource location; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource location is used for describing the MAC address of the CDN resource policy server and the path information of resource storage.
Preferably, the CDN resource policy server sends a media resource request to the CM according to the resource condition, including:
the CDN resource policy server forwards the media resource request to the CM via a CMTS, the media resource request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
Preferably, the media resource response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
Preferably, the CDN resource policy server selects a suitable CM to send a media resource confirmation message according to the media resource response, including:
and the CDN resource strategy server selects the CM with the lowest resource utilization rate as a sending server of the media resource according to the media resource response sent by the CM, and sends the media resource confirmation message to the CM.
Preferably, after the CDN resource policy server determines whether the media resource is in the resource list, the method further includes:
if the CDN resource policy server judges that the media resource is not in the resource list, the CDN resource policy server sends a resource query request to the CM, receives a response of the resource query request sent by the CM and updates the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list.
In a second aspect, a method for constructing a CDN system in a CM network, the method comprising:
the CM receives a media resource request sent by the CDN resource strategy server according to the resource condition;
the CM sends a media resource response to the CDN resource strategy server so that the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response;
and the CM receiving the media resource confirmation message sends the media resource to the user equipment.
In a third aspect, an apparatus for constructing a CDN system in a CM network, the apparatus comprising:
the query module is used for querying the resource list;
the judging module is used for judging whether the media resources are in the resource list or not;
a first sending module, configured to send a media resource request to the CM according to a resource condition if the CDN resource policy server determines that a media resource is in the resource list;
a receiving module, configured to receive a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Preferably, the resource list includes a resource identifier, a resource name, a resource description, a resource type, and a resource location; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource location is used for describing the MAC address of the CDN resource policy server and the path information of resource storage.
Preferably, the first sending module is specifically configured to:
forwarding, by the CMTS, the media asset request to the CM, the media asset request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
Preferably, the media resource response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
Preferably, the first sending module is specifically configured to:
and selecting the CM with the lowest resource utilization rate as a sending server of the media resource according to the media resource response sent by the CM, and sending the media resource confirmation message to the CM.
Preferably, the apparatus further comprises:
a second sending module, configured to, after the CDN resource policy server determines whether the media resource is in the resource list, if the CDN resource policy server determines that the media resource is not in the resource list, send a resource query request to the CM, receive a response to the resource query request sent by the CM, and update the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list.
In a fourth aspect, an apparatus for constructing a CDN system in a CM network, the apparatus comprising:
the first receiving module is used for receiving a media resource request sent by the CDN resource policy server according to the resource condition;
a sending module, configured to send a media resource response to the CDN resource policy server, so that the CDN resource policy server selects a suitable CM to send a media resource confirmation message according to the media resource response;
and the second receiving module is used for sending the media resource to the user equipment by the CM receiving the media resource confirmation message.
The embodiment of the invention provides a method and a device for constructing a CDN system in a CM network, wherein a CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Drawings
Fig. 1 is a schematic flowchart of a method for constructing a CDN system in a CM network according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another method for constructing a CDN system in a CM network according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of another method for constructing a CDN system in a CM network according to an embodiment of the present invention;
fig. 4 is a functional block diagram of an apparatus for constructing a CDN system in a CM network according to an embodiment of the present invention;
fig. 5 is a functional block diagram of another apparatus for constructing a CDN system in a CM network according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of constructing a CDN system in a CM network according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.
Referring to fig. 1, fig. 1 is a schematic flowchart of a method for constructing a CDN system in a CM network according to an embodiment of the present invention.
As shown in fig. 1, the method for constructing a CDN system in a Cable Modem (CM) network includes:
step 101, a CDN resource strategy server inquires a resource list;
the resource list comprises a resource identifier, a resource name, a resource description, a resource type and a resource position; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource location is used for describing the MAC address of the CDN resource policy server and the path information of resource storage.
Specifically, the user equipment sends a media resource request; the user equipment refers to equipment which can be connected with the Internet, and includes but is not limited to computers, PADs, mobile phones, televisions, network set-top boxes and the like; media assets include, but are not limited to, video, audio, pictures, and the like. The resource request of the user equipment is sent to Cable Modem Termination Systems (CMTS) through the CM, and forwarded to the CDN resource policy server through the CMTS.
Step 102, the CDN resource policy server determines whether a media resource is in the resource list;
step 103, if the CDN resource policy server determines that the media resource is in the resource list, the CDN resource policy server sends a media resource request to the CM according to the resource condition;
preferably, the CDN resource policy server sends a media resource request to the CM according to the resource condition, including:
the CDN resource policy server forwards the media resource request to the CM via a CMTS, the media resource request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
Specifically, after receiving a resource query request sent by the CDN resource policy server, the CM sends a resource query response to the CDN resource policy server; the resource query response feeds back whether the CM (CDN edge server) has a resource requested by the CDN resource policy server, and if the CM (CDN edge server) does not have a resource requested by the CDN resource policy server, the CDN resource policy server requests the resource from the front-end server of the content provider.
The CDN resource strategy server sends a media resource request to the CM according to the resource condition; the same media resource may reside on multiple CMs (CDN edge servers), the CDN resource policy server sending a media resource request to all CMs (CDN edge servers) with the requested media resource; the media resource request is forwarded via the CMTS.
Step 104, the CDN resource policy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Wherein the media resource response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
Preferably, the CDN resource policy server selects a suitable CM to send a media resource confirmation message according to the media resource response, including:
and the CDN resource strategy server selects the CM with the lowest resource utilization rate as a sending server of the media resource according to the media resource response sent by the CM, and sends the media resource confirmation message to the CM.
The embodiment of the invention provides a method for constructing a CDN system in a CM network, wherein a CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Referring to fig. 2, fig. 2 is a schematic flowchart of another method for constructing a CDN system in a CM network according to an embodiment of the present invention.
As shown in fig. 2, the method for constructing a CDN system in a CM network includes:
step 201, a CDN resource policy server queries a resource list;
step 202, the CDN resource policy server determines whether a media resource is in the resource list;
step 203, if the CDN resource policy server determines that the media resource is in the resource list, the CDN resource policy server sends a media resource request to the CM according to the resource condition;
step 204, if the CDN resource policy server determines that the media resource is not in the resource list, the CDN resource policy server sends a resource query request to the CM, receives a response to the resource query request sent by the CM, and updates the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list;
step 205, the CDN resource policy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Referring to fig. 3, fig. 3 is a schematic flowchart of another method for constructing a CDN system in a CM network according to an embodiment of the present invention.
As shown in fig. 3, the method for constructing a CDN system in a CM network includes:
step 301, the CM receives a media resource request sent by the CDN resource policy server according to the resource condition;
step 302, the CM sends a media resource response to the CDN resource policy server, so that the CDN resource policy server selects an appropriate CM to send a media resource confirmation message according to the media resource response;
step 303, the CM receiving the media resource confirmation message sends the media resource to the user equipment.
The embodiment of the invention provides a method for constructing a CDN system in a CM network, wherein a CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Referring to fig. 4, fig. 4 is a functional module diagram of an apparatus for constructing a CDN system in a CM network according to an embodiment of the present invention.
A query module 401, configured to query a resource list;
the resource list comprises a resource identifier, a resource name, a resource description, a resource type and a resource position; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource location is used for describing the MAC address of the CDN resource policy server and the path information of resource storage.
A determining module 402, configured to determine whether a media resource is in the resource list;
a first sending module 403, configured to send a media resource request to the CM according to a resource condition if the CDN resource policy server determines that a media resource is in the resource list;
preferably, the first sending module 403 is specifically configured to:
forwarding, by the CMTS, the media asset request to the CM, the media asset request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
Preferably, the first sending module 403 is specifically configured to:
and selecting the CM with the lowest resource utilization rate as a sending server of the media resource according to the media resource response sent by the CM, and sending the media resource confirmation message to the CM.
A receiving module 404, configured to receive a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Preferably, the media resource response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
Preferably, the apparatus further comprises:
a second sending module, configured to, after the CDN resource policy server determines whether the media resource is in the resource list, if the CDN resource policy server determines that the media resource is not in the resource list, send a resource query request to the CM, receive a response to the resource query request sent by the CM, and update the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list.
The embodiment of the invention provides a device for constructing a CDN system in a CM network, wherein a CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Referring to fig. 5, fig. 5 is a functional block diagram of another apparatus for constructing a CDN system in a CM network according to an embodiment of the present invention.
As shown in fig. 5, the apparatus for constructing a CDN system in a CM network includes:
a first receiving module 501, configured to receive a media resource request sent by a CDN resource policy server according to a resource condition;
a sending module 502, configured to send a media resource response to the CDN resource policy server, so that the CDN resource policy server selects an appropriate CM to send a media resource confirmation message according to the media resource response;
a second receiving module 503, configured to send the media resource to the user equipment by the CM that receives the media resource confirmation message.
The embodiment of the invention provides a device for constructing a CDN system in a CM network, wherein a CDN resource strategy server inquires a resource list; the CDN resource strategy server judges whether media resources are in the resource list or not; if the CDN resource strategy server judges that the media resource is in the resource list, the CDN resource strategy server sends a media resource request to the CM according to the resource condition; the CDN resource strategy server receives a media resource response sent by the CM; and the CDN resource strategy server selects a proper CM to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to user equipment.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a system for constructing a CDN system in a CM network according to an embodiment of the present invention.
As shown in fig. 6, the system for constructing the CDN system in the CM network includes:
a CMTS601, a CDN resource policy server 602 for setting resource policies and resource scheduling, a CM603 for providing a network access function for user equipment, an internet 604, and user equipment 605;
the CMTS601 is connected to the Internet 604; the CMTS601 is connected to the CDN resource policy server 602; the CMTS601 is connected to the CM 603; the CM603 is connected with the user equipment 605;
the CDN resource policy server 602 queries a resource list; the CDN resource policy server 602 determines whether a media resource is in the resource list; if the CDN resource policy server 602 determines that the media resource is in the resource list, the CDN resource policy server 602 sends a media resource request to the CM603 according to the resource condition; the CDN resource policy server 602 receives the media resource response sent by the CM 603; the CDN resource policy server 602 selects a suitable CM603 to send a media resource confirmation message according to the media resource response, so that the CM603 that receives the media resource confirmation message sends a media resource to the user equipment 605;
the CM603 receives a media resource request sent by the CDN resource policy server 602 according to the resource condition; the CM603 sends a media resource response to the CDN resource policy server 602, so that the CDN resource policy server 602 selects a suitable CM603 to send a media resource confirmation message according to the media resource response; the CM603 that receives the media asset confirmation message sends the media asset to the user equipment 605.
The technical principle of the embodiment of the present invention is described above in conjunction with the specific embodiments. The description is only intended to explain the principles of embodiments of the invention and should not be taken in any way as limiting the scope of the embodiments of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.

Claims (8)

1. A method for constructing a CDN system in a CM network, the method comprising:
a CDN resource strategy server of a content delivery network inquires a resource list;
the CDN resource strategy server judges whether media resources are in the resource list or not;
if the CDN resource policy server judges that the media resource is in the resource list, the CDN resource policy server sends a media resource request to a cable modem CM according to the resource condition;
the CDN resource strategy server receives a media resource response sent by the CM; the CDN resource strategy server selects a CM with the lowest resource utilization rate to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends media resources to user equipment;
if the CDN resource policy server judges that the media resource is not in the resource list, the CDN resource policy server sends a resource query request to the CM, receives a response of the resource query request sent by the CM and updates the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list.
2. The method of claim 1, wherein the resource list comprises a resource identifier, a resource name, a resource description, a resource type, and a resource location; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource position is used for describing the MAC address of the CDN resource strategy server and the path information of resource storage;
the media asset response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
3. The method of claim 2, wherein the CDN resource policy server sending a media resource request to the CM based on the resource conditions, comprising:
the CDN resource policy server forwards the media resource request to the CM via a Cable Modem Termination System (CMTS), the media resource request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
4. A method for constructing a CDN system in a CM network, the method comprising:
the CM receives a media resource request sent by the CDN resource strategy server according to the resource condition;
the CM sends a media resource response to the CDN resource strategy server so that the CDN resource strategy server selects the CM with the lowest resource utilization rate to send a media resource confirmation message according to the media resource response;
and the CM receiving the media resource confirmation message sends the media resource to the user equipment.
5. An apparatus for constructing a CDN system in a CM network, the apparatus comprising:
the query module is used for querying the resource list;
the judging module is used for judging whether the media resources are in the resource list or not;
the first sending module is used for sending a media resource request to the CM according to the resource condition if the CDN resource policy server judges that the media resource is in the resource list;
a second sending module, configured to, after the CDN resource policy server determines whether the media resource is in the resource list, if the CDN resource policy server determines that the media resource is not in the resource list, send a resource query request to the CM, receive a response to the resource query request sent by the CM, and update the resource list; and returning to execute the CDN resource strategy server to judge whether the media resource is in the resource list;
a receiving module, configured to receive a media resource response sent by the CM; and the CDN resource strategy server selects the CM with the lowest resource utilization rate to send a media resource confirmation message according to the media resource response, so that the CM receiving the media resource confirmation message sends the media resource to the user equipment.
6. The apparatus of claim 5, wherein the resource list comprises a resource identifier, a resource name, a resource description, a resource type, and a resource location; the resource identifier is used for uniquely identifying a preset resource; the resource name is used for describing a resource name; the resource description is used for describing resource content; the resource type is used for describing the classification of the resource; the resource position is used for describing the MAC address of the CDN resource strategy server and the path information of resource storage;
the media asset response comprises: CM resource usage, the resource identification, the resource name, the resource description, the resource type, and the resource location.
7. The apparatus of claim 6, wherein the first sending module is specifically configured to:
forwarding, by the CMTS, the media asset request to the CM, the media asset request comprising: the resource identifier, the resource name, the resource description, the resource type, and the resource location.
8. An apparatus for constructing a CDN system in a CM network, the apparatus comprising:
the first receiving module is used for receiving a media resource request sent by the CDN resource policy server according to the resource condition;
a sending module, configured to send a media resource response to the CDN resource policy server, so that the CDN resource policy server selects, according to the media resource response, a CM with the lowest resource usage rate to send a media resource confirmation message;
and the second receiving module is used for sending the media resource to the user equipment by the CM receiving the media resource confirmation message.
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