CN110708293A - Method and device for distributing multimedia service - Google Patents
Method and device for distributing multimedia service Download PDFInfo
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- CN110708293A CN110708293A CN201910860958.0A CN201910860958A CN110708293A CN 110708293 A CN110708293 A CN 110708293A CN 201910860958 A CN201910860958 A CN 201910860958A CN 110708293 A CN110708293 A CN 110708293A
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- 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
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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- 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
- H04L65/40—Support for services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
Abstract
The application provides a method and a device for shunting multimedia services, relates to the technical field of wireless communication, meets the bandwidth requirement of watching high-definition videos by a user under the condition of high concurrency, and provides better video playing service experience for the user. The method comprises the following steps: the MEC platform receives a multimedia service request carrying a domain name sent by a client terminal and sends the multimedia service request to a multimedia application platform corresponding to the domain name; the client terminal generates a multimedia service redirection request according to a first redirection request sent by the multimedia application platform; and the MEC platform judges the redirected multimedia service request, if the redirected multimedia service request carries a first unicast URL, a data packet corresponding to the first unicast URL is sent to the client terminal, and if the redirected multimedia service request carries the first unicast URL and a preset multicast address, the data packet corresponding to the first unicast URL is sent to the preset multicast address.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for offloading multimedia services.
Background
With the rise of ultra high definition video services represented by 2K/4K video, Virtual Reality (VR) and Augmented Reality (AR), video services have become the fourth basic service of operators following voice, short message and data services. The video service has high requirements on the network, including: the method has the advantages of high bandwidth, low time delay, less packet loss rate and high concurrency rate, and currently, the method usually adopts a unicast or link layer multicast mode to transmit videos such as live video, video on demand, video conference, real-time video monitoring and the like.
However, in the prior art, a link layer multicast mode needs network element support of a mobile network, and when only a unicast mode is used for video transmission, the load brought to a return network when a user watches high-definition videos at the same time cannot be met, the bandwidth is higher when the user watches the high-definition videos in a high-concurrency scene, the network bandwidth occupied by playing the videos is rapidly increased, and the bandwidth requirements of other data services in the network are seriously affected.
Disclosure of Invention
The application provides a method and a device for distributing multimedia services, which reduce the occupation of network bandwidth by distributing unicast requests and multicast requests, meet the bandwidth requirement of watching high-definition videos by multiple users at the same time, and provide better video playing service experience for the users.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides a method for offloading multimedia services, which is applied to a Mobile Edge Computing (MEC) platform, and includes: receiving a multimedia service request sent by a client terminal corresponding to the MEC platform; the multimedia service request carries a domain name; sending a multimedia service request to a multimedia application platform corresponding to the domain name; receiving a multimedia service redirection request sent by a client terminal; the multimedia service redirection request is generated by the client terminal according to a first redirection request sent by the multimedia application platform; the redirected multimedia service request and the multimedia service request correspond to the same multimedia service; if the redirected multimedia service request carries a first unicast Uniform Resource Locator (URL), sending a data packet corresponding to the first unicast URL to the client terminal; and if the redirected multimedia service request carries the first unicast URL and the preset multicast address, sending a data packet corresponding to the first unicast URL to the preset multicast address.
The utility model provides a multimedia service shunting method, through the multimedia application platform that MEC platform sent the multimedia service request of client terminal to correspond with the domain name of multimedia service request, and receive the redirection multimedia service request that client terminal sent, because this redirection multimedia service request is client terminal according to the first redirection request that multimedia application platform sent and generates, so the type of this redirection multimedia service request is different, MEC platform can judge this redirection multimedia service request, do corresponding processing according to the type of judgement, thereby realized the reposition to unicast multimedia service and multicast multimedia service. According to the method for distributing the multimedia service, the occupation of network bandwidth can be reduced through distribution, the bandwidth requirement of a user for watching high-definition videos at the same time is met, and better video playing service experience is provided for the user.
In a second aspect, the present application provides a method for offloading multimedia services, applied to a multimedia application platform, including: receiving a multimedia service request sent by an MEC platform; the multimedia service request is sent to the MEC platform by a client terminal corresponding to the MEC platform; when determining that a data packet of a multimedia service corresponding to the multimedia service request is deployed in the MEC platform, determining the type of the multimedia service corresponding to the multimedia request according to the multimedia service request; when the category of the multimedia service is determined to be unicast, sending a first redirection request carrying a first unicast URL of a data packet of the corresponding multimedia service to a client terminal; when the multimedia service is determined to be multicast and the MEC platform starts to send a data packet corresponding to the multimedia service to the preset multicast address, sending a third redirection request carrying the preset multicast address to the client terminal so that the client terminal sends the multicast request to the preset multicast address; and when the multimedia service is determined to be multicast and the MEC platform does not start to send a data packet corresponding to the multimedia service to the preset multicast address, sending a first redirection request carrying a first unicast URL and the preset multicast address to the client terminal.
In a third aspect, the present application provides an MEC platform comprising: the routing module is used for receiving a multimedia service request sent by a client terminal corresponding to the MEC platform; the multimedia service request carries a domain name; the routing module is also used for sending a multimedia service request to a multimedia application platform corresponding to the domain name; the routing module is also used for receiving a multimedia service redirection request sent by the client terminal; the multimedia service redirection request is generated by the client terminal according to a first redirection request sent by the multimedia application platform; the redirected multimedia service request and the multimedia service request correspond to the same multimedia service; a Mobile Edge Application (ME APP) module, configured to send a data packet corresponding to a first unicast URL to a client terminal through a routing module when a redirected multimedia service request received by the routing module carries the first unicast URL; the ME APP module is further configured to send a data packet corresponding to the first unicast URL to the preset multicast address through the routing module when the redirected multimedia service request received by the routing module carries the first unicast URL and the preset multicast address.
In a fourth aspect, the present application provides a multimedia application platform, comprising: the communication module is used for receiving a multimedia service request sent by the MEC platform; the multimedia service request is sent to the MEC platform by a client terminal corresponding to the MEC platform; the determining module is used for determining the type of the multimedia service corresponding to the multimedia request according to the multimedia service request when determining that a data packet of the multimedia service corresponding to the multimedia service request is deployed in the MEC platform which sends the multimedia service request to the communication module; the first processing module is used for sending a first redirection request carrying a first unicast URL of a data packet of the corresponding multimedia service to the client terminal through the communication module when the determining module determines that the category of the multimedia service is unicast; the second processing module is used for sending a third redirection request carrying a preset multicast address to the client terminal through the communication module when the MEC platform starts to send a data packet corresponding to the multimedia service to the preset multicast address and the determining module determines that the multimedia service of the communication module is multicast, so that the client terminal sends the multicast request to the preset multicast address; and the third processing module is used for sending a first redirection request carrying the first unicast URL and the preset multicast address to the client terminal through the communication module when the MEC platform does not start to send a data packet corresponding to the multimedia service to the preset multicast address and the determining module determines that the multimedia service of the communication module is multicast.
In a fifth aspect, the present application provides a multimedia service offloading device, including a memory, a processor, a bus, and a communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the shunting device for multimedia services is operated, the processor executes computer-executable instructions stored in the memory, so that the shunting device for multimedia services executes the shunting method for multimedia services as provided in the first aspect or the second aspect.
In a sixth aspect, the present application provides a computer storage medium, where the computer storage medium stores computer-executable instructions, and when the computer executes the instructions, the method for offloading multimedia services provided in the first aspect or the second aspect is implemented.
In a seventh aspect, the present application provides a multimedia service distribution system, including the MEC platform provided in the third aspect and the multimedia application platform provided in the fourth aspect.
The application provides a method and a device for shunting multimedia services, wherein an MEC platform receives a multimedia service request sent by a client terminal and sends the multimedia service request to a multimedia application platform; when the multimedia application platform determines that a multimedia service data packet corresponding to the multimedia service request is deployed in the MEC platform, the multimedia application platform judges the type (multicast or unicast) of the multimedia service and sends a first redirection request or a third redirection request to the client terminal; the client terminal generates the redirected multimedia service request according to a first redirected request sent by the multimedia application platform; the MEC platform judges the redirected multimedia service request, if the redirected multimedia service request carries a first unicast URL, a data packet corresponding to the first unicast URL is sent to the client terminal, and if the redirected multimedia service request carries the first unicast URL and a preset multicast address, the data packet corresponding to the first unicast URL is sent to the preset multicast address; finally, the client terminal can request data from the MEC platform or the multicast address according to the redirection request sent by the MEC platform or the multimedia application platform, and the required service is completed. According to the method for distributing the multimedia services, the multimedia application platform can judge the type of the multimedia services initiated by the client terminal and initiate the redirection request to the client terminal according to the type of the multimedia services, so that the types of the redirection multimedia service requests initiated by the client terminal to the MEC platform are different, the redirection multimedia service requests comprise unicast requests and first multicast requests, the MEC platform can judge the redirection multimedia service requests initiated by the client terminal, the redirection multimedia service requests of different types can be further processed, the distribution of the multimedia services meets the bandwidth requirement of a user for watching high-definition videos at the same time, and better video playing service experience is provided for the user.
Drawings
Fig. 1 is a schematic system architecture diagram of a offloading device for multimedia services according to an embodiment of the present disclosure;
fig. 2 is a first flowchart illustrating a method for offloading multimedia services according to an embodiment of the present application;
fig. 3 is a second flowchart illustrating a method for offloading multimedia services according to an embodiment of the present application;
fig. 4 is a third schematic flowchart of a method for offloading multimedia services according to an embodiment of the present application;
fig. 5 is a fourth flowchart of a method for offloading multimedia services according to an embodiment of the present application;
fig. 6 is an interaction diagram of a method for offloading multimedia services according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a multimedia service offloading system according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an MEC platform provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of a multimedia application platform according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of another offloading system for multimedia services according to an embodiment of the present application.
Detailed Description
The method, the apparatus, and the system for splitting multimedia services provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
The terms "first" and "second" and the like in the description and drawings of the present application are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of the objects.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
At present, for ultra-high-definition video services, a unicast or link layer multicast mode is generally adopted for video transmission, and multicast is an ideal technology for carrying live video, on-demand video, video conference and video monitoring. In the same network, if the number of client terminals is small, the video distribution in a unicast mode is the most effective mode, but the number of terminals is increased, and when the high-definition video is watched and the bandwidth has higher requirements, the network bandwidth occupied by the played video is rapidly increased in the unicast mode, the bandwidth requirements of other data services in the network are seriously influenced, at the moment, the video stream can be distributed through the multicast address, and because the terminals added into the multicast group can simultaneously receive the multicast data packet when the video stream is distributed by using the multicast address, another unicast is not needed, so that the bandwidth occupation is unrelated to the online number of the terminals, and the bandwidth utilization rate of the mobile network can be obviously improved.
However, in the prior art, a link layer multicast mode needs to be supported by a network element of a mobile network, so that the embodiments of the present application provide a method for offloading multimedia services to solve the problem.
The method for offloading multimedia services provided in the embodiment of the present application is applied to a system architecture shown in fig. 1, where the system architecture includes a client terminal, an MEC platform, and a multimedia application platform.
The client terminal is used for generating a multimedia service redirection request according to a first redirection request sent by the multimedia Application platform, wherein the client terminal can be a mobile phone, a tablet computer or other mobile terminals which are provided with third-party multimedia Applications (APPs).
And the MEC platform is used for receiving the multimedia service request sent by the client terminal and sending the multimedia service request to the multimedia application platform.
And the MEC platform is also used for receiving the multimedia service redirection request sent by the client terminal.
The MEC is an open platform of an edge cloud computing environment and Network capacity, is a key Technology of The evolution of a current 5G Network architecture, and provides computing capacity, storage and various Network services for an application service (Over The Top, OTT) provider provided by an operator to a content service provider, an application developer or a third-party Internet to a user through an MEC open Internet Technology (IT) service environment deployed at The edge of a Radio Access Network (RAN), so that better value-added services and user experiences are provided for mobile users, enterprises and vertical industries, and The maximization of Network value is realized.
And the multimedia application platform is used for determining the type of the multimedia service corresponding to the multimedia request according to the multimedia service request when the fact that the data packet of the multimedia service corresponding to the multimedia service request is deployed in the MEC platform is determined.
And the multimedia application platform is also used for sending a first redirection request carrying a first unicast URL of a data packet corresponding to the multimedia service to the client terminal when the category of the multimedia service is determined to be unicast.
And the multimedia application platform is further used for sending a third redirection request carrying the preset multicast address to the client terminal when the multimedia service is determined to be multicast and the MEC platform starts to send the data packet corresponding to the multimedia service to the preset multicast address, so that the client terminal sends the multicast request to the preset multicast address.
And the multimedia application platform is also used for sending a first redirection request carrying a first unicast URL and a preset multicast address to the client terminal when the multimedia service is determined to be multicast and the MEC platform does not start to send a data packet corresponding to the multimedia service to the preset multicast address.
Based on the above system architecture, as shown in fig. 2, an embodiment of the present application provides a method for offloading multimedia services, where the method may include S201 to S208:
s201, the MEC platform receives a multimedia service request sent by a client terminal corresponding to the MEC platform.
The multimedia service request initiated by the client terminal may include a live video service, a video on demand service, or other types of video playing services.
It should be noted that, since the MEC platform is an edge computing platform deployed in an area where the client terminal is located, the multimedia service request received by the MEC platform is sent by the client terminal in the area corresponding to the MEC platform.
In addition, the MEC platform receives the multimedia service request sent by the corresponding client terminal, wherein the multimedia service request carries the domain name.
S202, the MEC platform sends a multimedia service request to the multimedia application platform.
Optionally, as shown in fig. 3, the step of sending, by the MEC platform, the multimedia service request to the multimedia application platform in step S202 further includes steps S2021-S2022:
s2021, the MEC platform analyzes the domain name to obtain the destination internet protocol IP address.
The domain name is a non-repeatable identification in the internet, and can be used as an addressing mode due to uniqueness.
Specifically, in this embodiment, the MEC platform may analyze a Domain Name carried in the multimedia service request sent by the client terminal through a Domain Name System (DNS), and obtain an Internet Protocol (IP) address according to an analysis result of the DNS.
S2022, the MEC platform sends the multimedia service request to the destination IP address.
The MEC platform comprises a routing module, the routing module can provide a data forwarding function between the MEC platform and the core network, so that after the MEC platform analyzes and obtains a destination IP address, the routing module of the MEC platform can forward a received multimedia service request sent by the client terminal to the multimedia application platform through the core network according to an analysis result of the DNS.
S203, the multimedia application platform receives the multimedia service request sent by the MEC platform.
The multimedia application platform can receive a multimedia service request sent by a routing module of the MEC platform through a core network, wherein the multimedia service request is sent to the MEC platform by a client terminal corresponding to the MEC platform.
S204, when the multimedia application platform determines that the multimedia service data packet corresponding to the multimedia service request is deployed in the MEC platform, the multimedia application platform determines the type of the multimedia service corresponding to the multimedia request according to the multimedia service request.
The multimedia application platform is a cloud platform deployed in the internet, and service information including deployment information of the ME APP on the MEC platform can be opened to the client terminal through the core network.
It should be noted that the ME APP is an APP deployed by an operator on the MEC platform, and the ME APP is deployed on the MEC platform to implement cloud service sinking and application localization. When an operator deploys the ME APP, whether to deploy can be determined according to the number of users using the multimedia APP in the area.
In addition, the multimedia application platform can determine the category of the multimedia service corresponding to the multimedia request according to the open service information. Specifically, in the embodiment of the present application, when the number of times of occurrence of the multimedia service request does not reach a set threshold, it may be determined that the category of the multimedia service is unicast; when the number of times of the multimedia service request reaches a set threshold value for the first time, the type of the multimedia service can be determined to be multicast, and the multimedia application platform does not start to send a data packet corresponding to the multimedia service to a preset multicast address; when the number of times of occurrence of the multimedia service request exceeds a set threshold, it can be determined that the type of the multimedia service is multicast and the multimedia application platform has started to send a data packet corresponding to the multimedia service to a preset multicast address.
The set threshold is a parameter determined in advance by an operator, when the number of times of occurrence of a multimedia service request exceeds the set threshold, it indicates that the number of the multimedia service requests initiated by a current user is large, the video playing service corresponding to the multimedia service request is high in heat at present, if the video playing service is played only in a unicast mode, a heavy traffic burden is brought to a return network when a large number of users watch high-definition videos at the same time, and at this time, the multimedia service request needs to be shunted.
S205, the multimedia application platform sends a first redirection request or a third redirection request to the client terminal according to the category of the multimedia service.
Optionally, as shown in fig. 4, the step of sending, by the multimedia application platform in step S205, the first redirection request or the third redirection request to the client terminal according to the category of the multimedia service further includes steps S2051 to S2053:
s2051, when the type of the multimedia service is determined to be unicast, a first redirection request carrying a first unicast URL of a data packet corresponding to the multimedia service is sent to the client terminal.
It should be noted that, in this embodiment, when the multimedia application platform determines that the category of the multimedia service corresponding to the multimedia request is unicast, it indicates that the number of the multimedia service requests initiated by the current user is small, and the multimedia service corresponding to the multimedia request is played in a unicast manner, so that the current user requirement can be met, and therefore, the multimedia application platform sends the first redirection request of the first unicast URL of the data packet of the multimedia service of the client terminal to the client terminal.
And S2052, when the multimedia service is determined to be multicast and the MEC platform starts to send the data packet corresponding to the multimedia service to the preset multicast address, sending a third redirection request carrying the preset multicast address to the client terminal so that the client terminal sends the multicast request to the preset multicast address.
When the multimedia application platform determines that the multimedia service is multicast and the MEC platform starts to send the data packet corresponding to the multimedia service to the preset multicast address, that is, the number of times of the current multimedia service request exceeds a set threshold value, the multimedia service playing in a multicast mode is triggered, at the moment, the multimedia application platform determines the preset multicast address for playing the multimedia service and starts to send the data packet corresponding to the multimedia service to the preset multicast address.
In this embodiment, when the multicast mode has been triggered to play the multimedia service, the multimedia application platform only needs to send a third redirection request carrying a preset multicast address to the client terminal, and the client terminal sends the multicast request to the preset multicast address to play the current multimedia service.
And S2053, when the multimedia service is determined to be multicast and the MEC platform does not start to send the data packet corresponding to the multimedia service to the preset multicast address, sending a first redirection request carrying the first unicast URL and the preset multicast address to the client terminal.
When the multimedia application platform determines that the multimedia service is multicast and the MEC platform does not start to send the data packet corresponding to the multimedia service to the preset multicast address, that is, the number of times of the current multimedia service request reaches a set threshold value for the first time, the multimedia service is played in a multicast mode without being triggered, at this moment, the multimedia application platform already determines the preset multicast address for playing the multimedia service, but does not send the data packet corresponding to the multimedia service to the preset multicast address.
In this embodiment, when the multicast mode playing of the multimedia service is not triggered, the multimedia application platform sends a first redirection request carrying a first unicast URL and a preset multicast address to the client terminal, and then the client terminal triggers multicast through the MEC platform to play the multimedia service in the multicast mode.
Optionally, when the multimedia application platform determines that a data packet of the multimedia service corresponding to the multimedia service request is not deployed in the MEC platform, a fourth redirection request carrying a second unicast URL of the data packet of the corresponding multimedia service is sent to the client terminal; the second unicast URL corresponds to the multimedia application platform and corresponds to a multimedia service packet corresponding to the multimedia service request.
It should be noted that, currently, for a region with a higher multimedia service request user, an operator has deployed a corresponding ME APP on the MEC platform, that is, deployed a data packet of a multimedia service corresponding to a multimedia service request, and for the region that is not deployed, the number of user requests in the region is not high, playing the multimedia service corresponding to the multimedia request in a unicast manner can meet the user requirement of the region, and the multimedia application platform can directly send a fourth redirection request carrying a second unicast URL of the data packet corresponding to the multimedia service to the client terminal, so that the client can access the multimedia application platform corresponding to the second unicast URL to obtain a unicast stream according to the fourth redirection request sent by the multimedia application platform.
S206, the client terminal generates a multimedia service redirection request according to the first redirection request sent by the multimedia application platform.
In this embodiment, when the multimedia application platform determines that the type of the multimedia service is unicast, or determines that the multimedia service is multicast and the MEC platform does not start to send a data packet corresponding to the multimedia service to the preset multicast address, the client terminal may generate a multimedia service redirection request according to a first redirection request sent by the multimedia application platform. It should be noted that the redirected multimedia service request and the multimedia service request correspond to the same multimedia service, and the redirected multimedia service request is directed to the MEC platform.
S207, the MEC platform receives the multimedia service redirection request sent by the client terminal.
When the multimedia application platform determines that the type of the multimedia service is unicast or determines that the multimedia service is multicast and the MEC platform does not start to send a data packet corresponding to the multimedia service to a preset multicast address, the client terminal generates a multimedia service redirection request and sends the multimedia service redirection request to the MEC platform, namely the MEC platform receives the multimedia service redirection request sent by the client terminal, wherein the multimedia service redirection request comprises two types: the type of the multimedia service is unicast and determined, the multimedia service is multicast, and the MEC platform does not start to send a data packet corresponding to the multimedia service to a preset multicast address.
It should be noted that, the MEC platform is deployed with ME APPs for different types of services, so when the MEC platform receives a multimedia service redirection request, the multimedia service redirection request still needs to be directionally transmitted to the ME APP corresponding to the multimedia service redirection through the routing module according to the resolution result of the DNS.
S208, if the redirected multimedia service request carries the first unicast URL, the MEC platform sends a data packet corresponding to the first unicast URL to the client terminal; and if the redirected multimedia service request carries the first unicast URL and the preset multicast address, the MEC platform sends a data packet corresponding to the first unicast URL to the preset multicast address.
Because the redirected multimedia service request received by the MEC platform includes two types, after the redirected multimedia service is received by the ME APP, the redirected multimedia service needs to be judged, if the redirected multimedia service request only carries the first unicast URL, the MEC platform can send the data packet corresponding to the first unicast URL to the client terminal, and the client terminal can directly access the URL to obtain the unicast stream.
If the redirected multimedia service request carries the first unicast URL and the preset multicast address, it indicates that the current client terminal needs to play the redirected multimedia service in a multicast mode, but the preset multicast address is not triggered at present, and the client terminal needs to trigger the MEC platform through the first unicast URL to send a corresponding data packet to the preset multicast address, and then obtain the corresponding data packet from the preset multicast address.
Optionally, because the transmission protocol used by the multicast is different from that used by the unicast, as shown in fig. 5, sending, by the MEC platform, the data packet corresponding to the first unicast URL to the preset multicast address includes S2081 to S2083:
s2081, the MEC platform changes the first transport protocol in the header of the packet corresponding to the first unicast URL to the second transport protocol to generate a multicast packet.
The MEC platform can be provided with a conversion module which can convert different types of transmission protocols, when the multimedia service is determined to be played in a multicast mode and a preset multicast address is not triggered, the conversion module is determined to perform protocol conversion on the current transmission protocol, the ME APP sends the multimedia service request to the conversion module, and the conversion module changes a first transmission protocol in a packet header of a data packet corresponding to a first unicast URL into a second transmission protocol to generate a multicast data packet.
Wherein, the first Transmission protocol corresponds to unicast and can be Transmission Control Protocol (TCP); the second transport protocol corresponds to multicast, and may be User Datagram Protocol (UDP).
In addition, the conversion module may be deployed on the MEC platform in a manner of an MEC capability module, so that an Application Programming Interface (API) may be provided by a Network open Function (NEF) Network element, and the conversion module is opened to the client terminal as a universal capability of the MEC platform.
S2082, the MEC platform sends a second redirection request carrying the preset multicast address to the client terminal, so that the client terminal sends the multicast request to the preset multicast address.
After the conversion module converts the current transmission protocol from TCP to UDP, it is determined that the multicast mode of the current multimedia service has been triggered, and a second redirection request carrying a preset multicast address may be sent to the client terminal, so that the client terminal sends the multicast request to the preset multicast address.
S2083, the MEC platform sends the multicast data packet to the preset multicast address.
After the conversion module converts the current transmission protocol from TCP to UDP, it is determined that the multicast mode of the current multimedia service has been triggered, and the MEC platform may send multicast data to the preset multicast address, so that the client terminal obtains a multicast stream through the preset multicast address, that is, a data packet corresponding to the redirected multimedia service request sent by the client terminal.
The embodiment of the application provides a multimedia service shunting method, wherein an MEC platform receives a multimedia service request sent by a client terminal and sends the multimedia service request to a multimedia application platform; when the multimedia application platform determines that a multimedia service data packet corresponding to the multimedia service request is deployed in the MEC platform, the multimedia application platform judges the type of the multimedia service and sends a first redirection request or a third redirection request to the client terminal; the client terminal generates the redirected multimedia service request according to a first redirected request sent by the multimedia application platform; and the MEC platform judges the redirected multimedia service request, if the redirected multimedia service request carries a first unicast URL, a data packet corresponding to the first unicast URL is sent to the client terminal, and if the redirected multimedia service request carries the first unicast URL and a preset multicast address, the data packet corresponding to the first unicast URL is sent to the preset multicast address. According to the method for distributing the multimedia services, the multimedia application platform can judge the type of the multimedia services initiated by the client terminal and initiate the redirection request to the client terminal according to the type of the multimedia services, so that the types of the redirection multimedia service requests initiated by the client terminal to the MEC platform are different, the redirection multimedia service requests comprise unicast requests and first multicast requests, the MEC platform can judge the redirection multimedia service requests initiated by the client terminal, the redirection multimedia service requests of different types can be further processed, the distribution of the multimedia services meets the bandwidth requirement of a user for watching high-definition videos at the same time, and better video playing service experience is provided for the user.
In the embodiment of the present application, the functional modules or the functional units may be divided according to the above method examples, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in a form of hardware, or may be implemented in a form of a software functional module or a functional unit. The division of the modules or units in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
For example, as shown in fig. 6, an embodiment of the present application further provides a signaling interaction schematic diagram of the system architecture shown in fig. 1, in which the method for offloading the multimedia service provided in the foregoing embodiment is applied, specifically taking a case where a data packet of the multimedia service corresponding to the multimedia service request is deployed in the MEC platform, and the multimedia service is multicast and the MEC platform does not start sending the data packet of the corresponding multimedia service to the preset multicast address as an example; the description of the specific signaling content may refer to the description in the above embodiments, and is not repeated here.
As shown in fig. 7, an embodiment of the present application further provides a multimedia service offloading system, which includes an MEC platform 02 and a multimedia application platform 03.
Fig. 8 shows a schematic diagram of a possible structure of the MEC platform 02 in the distribution system 01 for multimedia services according to the foregoing embodiments. The MEC platform 02 includes: a routing module 21, an ME APP module 22.
The routing module 21 executes S201, and S207 in the foregoing method embodiment, and the ME APP module 22 executes S208 in the foregoing method embodiment.
Specifically, the routing module 21 is configured to receive a multimedia service request sent by a client terminal 04 corresponding to the MEC platform 02.
The routing module 21 is further configured to send a multimedia service request to the multimedia application platform 03 corresponding to the domain name.
The routing module 21 is further configured to receive a request for redirecting the multimedia service, which is sent by the client terminal 04.
The ME APP module 22 is configured to send, when the redirected multimedia service request received by the routing module 21 carries the first unicast URL, a data packet corresponding to the first unicast URL to the client terminal 04 through the routing module 21.
The ME APP module 22 is further configured to send, through the routing module 21, a data packet corresponding to the first unicast URL to the preset multicast address when the redirected multimedia service request received by the routing module 21 carries the first unicast URL and the preset multicast address.
Optionally, referring to fig. 8, the MEC platform 02 includes a conversion module 23, and the conversion module 23 executes S2081 in the foregoing method embodiment.
Optionally, the ME APP module 22 is specifically configured to send a data packet corresponding to the first unicast URL to the conversion module 23 when the redirected multimedia service request received by the routing module 21 carries the first unicast URL and the preset multicast address; a conversion module 23, configured to change a first transmission protocol in a packet header of a data packet sent by the ME APP module 22 and corresponding to the first unicast URL to a second transmission protocol to generate a multicast data packet; the ME APP module 22 is further configured to send the multicast data packet generated by the conversion module 23 to the preset multicast address through the routing module 21.
Optionally, the first transmission protocol is a transmission control protocol TCP, and the second transmission protocol is a user datagram protocol UDP.
Optionally, the ME APP module 22 is further configured to send a second redirection request carrying the preset multicast address to the client terminal 04 through the routing module 21, so that the client terminal 04 sends the multicast request to the preset multicast address.
Optionally, the routing module 21 is further configured to resolve a domain name carried in the multimedia service request sent by the client terminal 04 to obtain a destination IP address; the routing module 21 is further configured to send a multimedia service request received from the client terminal to the destination IP address.
Fig. 9 shows a schematic diagram of a possible structure of the multimedia application platform 03 in the distribution system 01 for multimedia services involved in the above embodiments. The multimedia application platform 03 includes: a communication module 31, a determination module 32, a first processing module 33, a second processing module 34, and a third processing module 35.
The communication module 31 executes S203 in the above method embodiment, the determination module 32 executes S204 in the above method embodiment, the first processing module 33 executes S2051 in the above method embodiment, the second processing module 34 executes S2052 in the above method embodiment, and the third processing module 35 executes S2053 in the above method embodiment.
Specifically, the communication module 31 is configured to receive a multimedia service request sent by the MEC platform 02.
The determining module 32 is configured to determine the category of the multimedia service corresponding to the multimedia service request according to the multimedia service request when it is determined that a data packet of the multimedia service corresponding to the multimedia service request is deployed in the MEC platform 02 that sends the multimedia service request to the communication module 31.
The first processing module 33 is configured to send, to the client terminal 04 through the communication module 31, a first redirection request carrying a first unicast URL of a data packet of a corresponding multimedia service when the determining module 32 determines that the category of the multimedia service is unicast.
The second processing module 34 is configured to send, by the communication module 31, a third redirection request carrying the preset multicast address to the client terminal 04 when the MEC platform 02 starts sending a data packet corresponding to the multimedia service to the preset multicast address and the determining module 32 determines that the multimedia service of the communication module 31 is multicast, so that the client terminal 04 sends a multicast request to the preset multicast address;
the third processing module 35 is configured to send a first redirection request carrying the first unicast URL and the preset multicast address to the client terminal 04 through the communication module 31 when the MEC platform 02 does not start sending a data packet corresponding to the multimedia service to the preset multicast address and the determining module 32 determines that the multimedia service of the communication module 31 is multicast.
Optionally, as shown in fig. 9, the multimedia application platform 03 further includes a fourth processing module 36, where the fourth processing module 36 is configured to send a fourth redirection request carrying a second unicast URL of a packet of the corresponding multimedia service to the client terminal 04 through the communication module 31 when the determining module 32 determines that the packet of the multimedia service corresponding to the multimedia service request is not deployed in the MEC platform 02.
The embodiment of the application provides a multimedia service distribution system, which comprises an MEC platform and a multimedia application platform. As can be seen from the above description, since the multimedia application platform can determine the type of the multimedia service initiated by the client terminal and initiate a redirection request to the client terminal according to the type of the multimedia service, the types of the redirection multimedia service request initiated by the client terminal to the MEC platform are also different, including a unicast request and a first multicast request, and the MEC platform can determine the redirection multimedia service request initiated by the client terminal, so that the redirection multimedia service requests of different types can be further processed, thereby implementing the distribution of the multimedia service, meeting the bandwidth requirement of the user for watching high-definition video at the same time, and providing better video playing service experience for the user.
As shown in fig. 10, an embodiment of the present invention further provides a multimedia service offloading device, which includes a memory 41, a processor 42, a bus 43, and a communication interface 44; the memory 41 is used for storing computer execution instructions, and the processor 42 is connected with the memory 41 through a bus 43; when the offloading device for multimedia services is in operation, the processor 42 executes computer-executable instructions stored in the memory 41 to enable the offloading device for multimedia services to perform an offloading method applied to a multimedia service of the MEC platform or an offloading method applied to a multimedia service of the multimedia application platform, as provided in the above embodiments.
In particular implementations, processor 42(42-1 and 42-2) may include one or more Central Processing Units (CPUs), such as CPU0 and CPU1 shown in FIG. 10, as one example. And as an example, the offloading device for multimedia services may include a plurality of processors 42, such as the processor 42-1 and the processor 42-2 shown in fig. 10. Each of the processors 42 may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). Processor 42 may refer herein to one or more devices, circuits, and/or processing cores that process data (e.g., computer program instructions).
The memory 41 may be, but is not limited to, a read-only memory 41 (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 41 may be self-contained and coupled to the processor 42 via a bus 43. The memory 41 may also be integrated with the processor 42.
In a specific implementation, the memory 41 is used for storing data in the present application and computer-executable instructions corresponding to software programs for executing the present application. The processor 42 may operate or execute software programs stored in the memory 41 and call up data stored in the memory 41, various functions of the offloading device of multimedia services.
The communication interface 44 is any device, such as a transceiver, for communicating with other devices or communication networks, such as a control system, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and the like. The communication interface 44 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.
The bus 43 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an extended ISA (enhanced industry standard architecture) bus, or the like. The bus 43 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
The embodiment of the present application further provides a computer storage medium, where instructions are stored in the computer storage medium, and when the computer executes the instructions, the computer is enabled to execute the method for offloading the multimedia service applied to the MEC platform or the method for offloading the multimedia service applied to the multimedia application platform, which are provided in the foregoing embodiment.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a RAM, a ROM, an erasable programmable read-only memory (EPROM), a register, a hard disk, an optical fiber, a CD-ROM, an optical storage device, a magnetic storage device, any suitable combination of the foregoing, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (17)
1. A method for distributing multimedia service is applied to a Mobile Edge Computing (MEC) platform, and is characterized by comprising the following steps:
receiving a multimedia service request sent by a client terminal corresponding to the MEC platform; the multimedia service request carries a domain name;
sending the multimedia service request to a multimedia application platform corresponding to the domain name;
receiving a multimedia service redirection request sent by the client terminal; the multimedia service redirection request is generated by the client terminal according to a first redirection request sent by the multimedia application platform; the redirected multimedia service request and the multimedia service request correspond to the same multimedia service;
if the redirected multimedia service request carries a first unicast Uniform Resource Locator (URL), sending a data packet corresponding to the first unicast URL to the client terminal; and if the redirected multimedia service request carries the first unicast URL and a preset multicast address, sending a data packet corresponding to the first unicast URL to the preset multicast address.
2. The method for offloading multimedia services according to claim 1, wherein the sending the data packet corresponding to the first unicast URL to the preset multicast address comprises:
changing a first transmission protocol in a packet header of a data packet corresponding to the first unicast URL into a second transmission protocol to generate a multicast data packet; the first transmission protocol corresponds to unicast, and the second transmission protocol corresponds to multicast;
and sending the multicast data packet to the preset multicast address.
3. The method of claim 2, wherein the first transport protocol is a Transmission Control Protocol (TCP), and the second transport protocol is a User Datagram Protocol (UDP).
4. The method for offloading multimedia services according to claim 2, wherein after the changing the first transport protocol in the header of the packet corresponding to the first unicast URL to the second transport protocol to generate the multicast packet, the method further comprises:
and sending a second redirection request carrying the preset multicast address to the client terminal so that the client terminal sends the multicast request to the preset multicast address.
5. The method for offloading multimedia services according to claim 1, wherein the sending the multimedia service request to the multimedia application platform corresponding to the domain name comprises:
resolving the domain name to obtain a destination Internet Protocol (IP) address;
and sending the multimedia service request to the destination IP address.
6. A method for distributing multimedia service is applied to a multimedia application platform, and is characterized by comprising the following steps:
receiving a multimedia service request sent by an MEC platform; the multimedia service request is sent to the MEC platform by a client terminal corresponding to the MEC platform;
when determining that a data packet of a multimedia service corresponding to the multimedia service request is deployed in the MEC platform, determining the type of the multimedia service corresponding to the multimedia request according to the multimedia service request;
when the category of the multimedia service is determined to be unicast, sending a first redirection request carrying a first unicast URL of a data packet corresponding to the multimedia service to the client terminal;
when the multimedia service is determined to be multicast and the MEC platform starts to send a data packet corresponding to the multimedia service to a preset multicast address, sending a third redirection request carrying the preset multicast address to the client terminal so that the client terminal sends a multicast request to the preset multicast address;
and when the multimedia service is determined to be multicast and the MEC platform does not start to send a data packet corresponding to the multimedia service to a preset multicast address, sending a first redirection request carrying the first unicast URL and the preset multicast address to the client terminal.
7. The method for offloading multimedia services according to claim 6, further comprising:
when determining that a data packet of the multimedia service corresponding to the multimedia service request is not deployed in the MEC platform, sending a fourth redirection request carrying a second unicast URL of the data packet corresponding to the multimedia service to the client terminal; and the second unicast URL corresponds to the multimedia application platform and corresponds to a data packet of the multimedia service corresponding to the multimedia service request.
8. An MEC platform, comprising:
the routing module is used for receiving a multimedia service request sent by a client terminal corresponding to the MEC platform; the multimedia service request carries a domain name;
the routing module is further configured to send the multimedia service request to a multimedia application platform corresponding to the domain name;
the routing module is also used for receiving a multimedia service redirection request sent by the client terminal; the multimedia service redirection request is generated by the client terminal according to a first redirection request sent by the multimedia application platform; the redirected multimedia service request and the multimedia service request correspond to the same multimedia service;
a mobile edge application ME APP module, configured to send, through the routing module, a data packet corresponding to a first unicast URL to the client terminal when a redirected multimedia service request received by the routing module carries the first unicast URL;
the ME APP module is further used for sending a data packet corresponding to the first unicast URL to the preset multicast address through the routing module when the redirected multimedia service request received by the routing module carries the first unicast URL and the preset multicast address.
9. The MEC platform of claim 8, further comprising a conversion module; the ME APP module is specifically configured to send a data packet corresponding to a first unicast URL to the conversion module when a redirected multimedia service request received by the routing module carries the first unicast URL and a preset multicast address;
the conversion module is configured to change a first transmission protocol in a header of the data packet sent by the ME APP module and corresponding to the first unicast URL to a second transmission protocol to generate a multicast data packet;
the ME APP module is further used for sending the multicast data packet generated by the conversion module to the preset multicast address through the routing module.
10. The MEC platform of claim 9, wherein the first transport protocol is a transmission control protocol, TCP, and the second transport protocol is a user datagram protocol, UDP.
11. The MEC platform of claim 9,
the ME APP module is further configured to send a second redirection request carrying the preset multicast address to the client terminal through the routing module, so that the client terminal sends a multicast request to the preset multicast address.
12. The MEC platform of claim 8,
the routing module is further configured to resolve the domain name carried in the multimedia service request sent by the client terminal to obtain a destination IP address;
the routing module is further configured to send the multimedia service request received from the client terminal to the destination IP address.
13. A multimedia application platform, comprising:
the communication module is used for receiving a multimedia service request sent by the MEC platform; the multimedia service request is sent to the MEC platform by a client terminal corresponding to the MEC platform;
the determining module is used for determining the category of the multimedia service corresponding to the multimedia request according to the multimedia service request when determining that a data packet of the multimedia service corresponding to the multimedia service request is deployed in the MEC platform which sends the multimedia service request to the communication module;
a first processing module, configured to send, to the client terminal through the communication module, a first redirection request carrying a first unicast URL of a data packet corresponding to the multimedia service when the determination module determines that the category of the multimedia service is unicast;
a second processing module, configured to send, by the communication module, a third redirection request carrying a preset multicast address to the client terminal when the MEC platform starts sending a data packet corresponding to the multimedia service to the preset multicast address and the determining module determines that the multimedia service of the communication module is multicast, so that the client terminal sends a multicast request to the preset multicast address;
a third processing module, configured to send, to the client terminal through the communication module, a first redirection request carrying the first unicast URL and the preset multicast address when the MEC platform does not start sending a data packet corresponding to the multimedia service to a preset multicast address and the determining module determines that the communication module multimedia service is multicast.
14. The multimedia application platform of claim 13, further comprising a fourth processing module;
the fourth processing module is further configured to send, to the client terminal through the communication module, a fourth redirection request carrying a second unicast URL of a data packet corresponding to the multimedia service when the determination module determines that the data packet of the multimedia service corresponding to the multimedia service request is not deployed in the MEC platform; and the second unicast URL corresponds to the multimedia application platform and corresponds to a data packet of the multimedia service corresponding to the multimedia service request.
15. The shunting device of a kind of multimedia service, characterized by that, including memorizer, processor, bus and communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through the bus; when the shunting device of multimedia services is running, the processor executes the computer-executable instructions stored in the memory to cause the shunting device of multimedia services to execute the shunting method of multimedia services according to any one of claims 1 to 5 or the shunting method of multimedia services according to any one of claims 6 to 7.
16. A computer storage medium having stored therein instructions that, when executed by a computer, cause the computer to perform the method for forking of a multimedia service according to any one of claims 1-5 or the method for forking of a multimedia service according to any one of claims 6-7.
17. A streaming system for multimedia services, comprising an MEC platform according to any of the claims 8-12 and a multimedia application platform according to any of the claims 13-14.
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