WO2024093996A1 - 音视频能力网元架构及多媒体处理方法 - Google Patents

音视频能力网元架构及多媒体处理方法 Download PDF

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Publication number
WO2024093996A1
WO2024093996A1 PCT/CN2023/128432 CN2023128432W WO2024093996A1 WO 2024093996 A1 WO2024093996 A1 WO 2024093996A1 CN 2023128432 W CN2023128432 W CN 2023128432W WO 2024093996 A1 WO2024093996 A1 WO 2024093996A1
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Prior art keywords
plane device
network element
media
audio
control plane
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PCT/CN2023/128432
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English (en)
French (fr)
Inventor
刘蕾
冯征
刘佳
何熙源
王钢
李旭光
田盛泰
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***通信集团设计院有限公司
***通信集团有限公司
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Publication of WO2024093996A1 publication Critical patent/WO2024093996A1/zh

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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
    • H04L65/10—Architectures or entities
    • H04L65/1013—Network architectures, gateways, control or user entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/07—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail characterised by the inclusion of specific contents
    • H04L51/08—Annexed information, e.g. attachments
    • 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
    • H04L65/10—Architectures or entities
    • H04L65/1046—Call controllers; Call servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to an audio and video capability network element architecture and a multimedia processing method.
  • the demand for long-distance transmission and IP bearer network bandwidth is relatively high (taking video ringback tone as an example, according to the current 720P resolution, the media playback bandwidth requirement for every 10 million users reaches 60Gbps), and as the video media resolution becomes higher and higher, the bandwidth requirement will continue to increase (it is estimated that taking the video ringback tone service as an example, when the resolution is increased to 1080P in the future, the bandwidth requirement for every 10 million users will reach 150Gbps); if long-distance transmission or IP bearer network resources are insufficient, it will affect the quality of audio and video media playback, such as mosaics, freezes, etc., thus affecting the user experience.
  • the audio and video capability network elements are decentralized to the province as a whole, although it can solve the problem of long-distance media playback and reduce transmission and IP bearer network bandwidth occupancy, it will cause a large number of signaling messages between the audio and video capability network elements and the core network equipment and service network elements set up in the central provinces of the region to be connected across long distances, resulting in excessively long signaling connection delays (taking the color ringback tone service as an example, the distance between the access province and the regional province is 500KM to 1500KM, and the connection delay before media connection will increase by about 300ms to 900ms), which also affects the user experience.
  • the embodiments of the present disclosure provide an audio and video capability network element architecture and a multimedia processing method, which are used to solve the problems of poor user experience and high cost of audio and video capability network elements in the prior art.
  • an audio and video capability network element architecture comprising a control plane device and a media plane device; the control plane device is centrally deployed near a core network and a service network element, and the media plane device is dispersedly deployed;
  • the control plane device communicates with the service network element, the core network and the media plane device respectively; the media plane device communicates with the service network element, the control plane device and the core network respectively.
  • control plane equipment, the core network and the service network element are deployed in the regional center province; the media plane equipment is deployed in the access provinces corresponding to the regional center provinces.
  • control plane device communicates with the service network element using RESTFUL/HTTP messages to perform call event notification, call event subscription, capability call nesting and conflict handling functions.
  • control plane device communicates with the CSCF network element of the core network using SIP messages to complete the signaling processing function.
  • control plane device communicates with the media plane device to perform call control and media negotiation functions.
  • the media plane device communicates with the service network element using RESTFUL/HTTP messages to complete the media download function.
  • control plane device receives a call event notification and a service request initiated by the service network element
  • the control plane device applies for multimedia resources from the media plane device, and the media plane device sends a response message to the control plane device;
  • the control plane device performs multimedia negotiation with the terminal according to the response message, and sends the negotiation result to the media plane device and the service network element;
  • the control plane device receives the operation instruction sent by the service network element, and sends a control message to the media plane device;
  • the media plane device plays multimedia resources to the terminal according to the control message.
  • a multimedia processing method is provided, the method being based on a control plane device in the audio and video capability network element architecture; the method comprising:
  • An operation instruction sent by the service network element is received, and a control message is sent to the media plane device, so that the media plane device plays multimedia resources to the terminal according to the control message.
  • the method further includes:
  • a hang-up disconnection message is sent to the media plane device according to the off-hook information, so that the media plane device releases the multimedia resources.
  • a multimedia processing method is provided, the method being based on a media plane device in the audio and video capability network element architecture.
  • the method comprises:
  • the control plane device receiving a multimedia resource application sent by the control plane device, and sending a response message to the control plane device, so that the control plane device performs multimedia negotiation with the terminal according to the response message;
  • the multimedia resource application is generated by the control plane device according to the multimedia service event sent by the service network element;
  • a control message sent by the control plane device is received, and multimedia resources are played to the terminal according to the control message, wherein the control message is generated by the control plane device according to an operation instruction sent by the received service network element.
  • a network element device comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein when the processor is used to run the computer program, it enables the multimedia processing method according to the second aspect or the third aspect above.
  • a processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the multimedia processing method according to the second aspect or the third aspect above.
  • a computer program product comprising instructions is provided.
  • the processor executes the multimedia processing method according to the second aspect or the third aspect above.
  • the disclosed embodiment can greatly reduce investment and operation costs and improve user experience by splitting the audio and video capability network element into two parts, including a control plane device and a media plane device; the control plane device is centrally deployed near the core network and the service network element, and the media plane device is dispersedly deployed; the control plane device communicates with the service network element, the core network and the media plane device respectively; the media plane device communicates with the service network element, the media plane device and the core network respectively.
  • FIG1 shows a schematic diagram of the structure of an existing audio and video capability network element
  • FIG2 shows a schematic diagram of the structure of an audio and video capability network element architecture provided by an embodiment of the present disclosure
  • FIG3 shows a schematic diagram of an interface structure of an audio and video capability network element architecture provided by an embodiment of the present disclosure
  • FIG4 shows a schematic diagram of a signaling interaction process of an audio and video capability network element architecture provided by an embodiment of the present disclosure
  • FIG5 shows another schematic diagram of a signaling interaction process of an audio and video capability network element architecture provided by an embodiment of the present disclosure
  • FIG6 shows a schematic flow chart of a multimedia processing method provided by an embodiment of the present disclosure.
  • FIG. 7 shows a schematic structural diagram of a network element device provided in an embodiment of the present disclosure.
  • Audio and video capability network elements provide upper-layer business systems with network communication capabilities including call event subscription and notification, call processing, user call status acquisition, audio and video media playback (such as video ringback tone playback, recorded notification playback, etc.).
  • audio and video capability network elements have been widely used in business systems such as ringback tone, intelligent network, and IMS anti-fraud, and will be introduced in many fields such as 5G new calls in the future.
  • the audio and video capability network elements of every 3 to 8 neighboring provinces, as well as the core network network elements and the service network elements (for calling audio and video capabilities) are all centrally deployed in the central provinces of the region with richer network resources and stronger maintenance forces; only a few core network access forwarding network elements (such as Session Border Controller, SBC) are retained in the access provinces.
  • SBC Session Border Controller
  • the demand for long-distance transmission and IP bearer network bandwidth is relatively high (taking video ringback tone as an example, according to the current 720P resolution, the media playback bandwidth requirement for every 10 million users reaches 60Gbps), and as the video media resolution becomes higher and higher, the bandwidth requirement will continue to increase (it is estimated that taking the video ringback tone service as an example, when the resolution is increased to 1080P in the future, the bandwidth requirement for every 10 million users will reach 150Gbps); if long-distance transmission or IP bearer network resources are insufficient, it will affect the quality of audio and video media playback, such as mosaics, freezes, etc., thus affecting the user experience.
  • the audio and video capability network elements are decentralized to the province as a whole, although it can solve the problem of long-distance media playback and reduce transmission and IP bearer network bandwidth occupancy, it will cause a large number of signaling messages between the audio and video capability network elements and the core network equipment and service network elements set up in the central provinces of the region to be connected across long distances, resulting in excessively long signaling connection delays (taking the color ringback tone service as an example, the distance between the access province and the regional province is 500KM to 1500KM, and the connection delay before media connection will increase by about 300ms to 900ms), which also affects the user experience.
  • an embodiment of the present disclosure provides an audio and video capability network element architecture.
  • Figure 2 shows a schematic diagram of the structure of an audio and video capability network element architecture provided according to an embodiment of the present disclosure.
  • the audio and video capability network element architecture includes a control plane device and a media plane device.
  • control plane equipment is centrally deployed near the core network and service network elements, and the media plane equipment is dispersedly deployed; the control plane equipment communicates with the service network elements, the core network and the media plane equipment respectively; the media plane equipment communicates with the service network elements, the control plane equipment and the core network respectively.
  • the control plane equipment is used to control the media plane equipment in the audio and video network elements, and the media plane equipment is used to play audio and video media.
  • control plane equipment communicates with the service network elements using RESTFUL/HTTP messages to complete call event notification, call event subscription, capability call nesting and conflict handling functions; uses SIP (Session Initiation Protocol) messages to communicate with the core network CSCF (Call Session Control Function) network elements to complete the signaling processing function; communicates with the media plane equipment to complete call control, media negotiation and other functions.
  • the media plane device communicates with the service network element using RESTFUL/HTTP messages to complete the media download function; communicates with the control plane device to complete call control, media negotiation and other functions; communicates with the core network SBC, IM-MGW and other network elements using RTP (real-time transport protocol) messages to complete the media playback function.
  • SIP Session Initiation Protocol
  • CSCF Common Session Control Function
  • the service network element is the service network element of audio and video.
  • the disclosed embodiment splits and reconstructs the functions of the audio and video capability network element, splits the control functions such as "call event subscription and notification, call signaling processing, user call status acquisition" that are closely related to the core network CSCF and service network elements and the media functions such as "audio and video media playback” that are closely related to the SBC, and defines the network element that implements the control function as the control plane device, and defines the network element that implements the audio and video playback capability of the media function as the media plane device.
  • Different functional entities within the audio and video capability network element can be deployed in different locations as needed, so that the overall network layout of the audio and video capability opening can be more reasonable.
  • control plane equipment is deployed together with the core network and the service network element in the regional center; the media plane equipment is deployed in the access provinces corresponding to the regional centers.
  • the control plane equipment is still deployed in the provinces of the regional center, and the media plane equipment is deployed in each province.
  • the control plane equipment is deployed in the regional center together with the core network and the upper-layer service network elements that need to call audio and video capabilities. The distance between them is short, and the signaling connection delay is short; the audio and video capability network element-media plane is deployed in 31 provinces, which is short to the terminal users, and the media playback delay is short.
  • the media playback of calls within the province does not occupy inter-provincial long-distance transmission and IP bearer network resources, thereby saving resources and reducing investment costs while improving user experience.
  • the control plane device and the media plane device of the audio and video capability network element architecture communicate with each other and with other devices through multiple preset interfaces.
  • the control plane device and the media plane device communicate through the IF1 interface to realize the service control of the media plane device by the control plane device.
  • the control plane device communicates with the audio and video service network element through IF2, and the control plane device communicates with the core network CSCF through IF4.
  • the media plane device communicates with the audio and video service network element through IF3; the media plane device communicates with the SBC/IM-MGW through IF5; the media plane device communicates with the network management through IF6.
  • Table 1 lists the functions and carrying methods of each interface.
  • the working process of the audio and video capability network element architecture of the embodiment of the present disclosure is as follows:
  • the terminal triggers the service, and the service network element initiates a call event notification and service request to the audio and video capability network element architecture.
  • the control plane device receives the call event notification and service request initiated by the service network element.
  • the control plane device applies for multimedia resources (media capability C1) from the media plane device, and the media plane device sends a response message (media capability U1) to the control plane device.
  • the control plane device performs multimedia negotiation with the terminal according to the response message, and sends the negotiation result (media capability U2) to the media plane device and the service network element.
  • the control plane device receives the operation instruction sent by the service network element, and sends a control message (such as playback, etc.) to the media plane device.
  • a control message such as playback, etc.
  • the media plane device plays multimedia resources to the terminal according to the control message.
  • the control plane device sends a hang-up disconnection message to the media plane device.
  • the media plane device ends the multimedia resource playback and releases the multimedia resources according to the received hang-up disconnection message.
  • the embodiment of the present disclosure takes the color ring back tone service as an example, as shown in FIG5 , the multimedia signaling implementation process of the above audio and video network element architecture is as follows:
  • the calling terminal initiates an audio call and sends an INVITE message through the calling side core network to the called side core network.
  • the control plane device of the called side audio and video capability network element architecture receives the INVITE message.
  • the calling side media capability SDP A1 carried in the INVITE message only has the audio media line.
  • the control plane device of the audio and video capability network element architecture reports the service network element of the audio and video capability network element with a call event notification (Begin), and carries the calling and called numbers, and the service server returns a response.
  • Begin call event notification
  • the service network element determines that the called terminal is a ring back tone user, and uses the call event control (Continue) to instruct the control plane device of the audio and video capability network element architecture to continue the call.
  • control plane device of the audio and video capability network element architecture forwards the INVITE message to the core network S-CSCF, and the S-CSCF continues to page the called terminal.
  • the called terminal After receiving the INVITE message, the called terminal responds with a 183 message.
  • the 183 message carries the media information SDP B1 of the called terminal.
  • SDP B1 is the audio media format supported by the called terminal selected from SDP A1.
  • the 183 message carries 100rel, which indicates that the calling terminal needs to perform a PRACK confirmation and the called terminal needs to apply for call resources.
  • the calling terminal After receiving the 183 message, the calling terminal sends a PRACK to confirm receipt of the 183 message and reserve call resources.
  • the called terminal receives the PRACK response 200OK.
  • the calling terminal After the call resource reservation of the calling terminal is completed, the calling terminal sends an UPDATE to the called terminal, and the audio media SDP A2 carried contains SDP B1, in which the resource reservation parameter is completed.
  • the called terminal After the called terminal receives the UPDATE and the resource reservation is completed, it responds with 200OK.
  • the audio media SDP B2 of the called terminal carried in the 200OK contains SDP A2, in which the resource reservation parameter is completed.
  • the ringing of the called terminal sends a 180 message (180Ring), and the control plane device of the called side audio and video capability network element architecture receives 180Ring.
  • the control plane equipment of the audio and video capability network element architecture reports the call event notification (Ringing) to the service network element, which carries the media capability SDP A1 of the calling terminal.
  • the service network element sends an audio or video media negotiation call event control (CatInd) message, based on the media content SDP (consulting)
  • CatInd media negotiation call event control
  • the session description protocol (session description protocol) information and the SDP A1 of the calling terminal are combined to obtain SDP C1 (media capability C1).
  • the control plane device of the audio and video capability network element architecture applies for multimedia resources from the media plane device of the audio and video capability network element architecture, and performs media negotiation with the terminal.
  • the media negotiation carries "media capability C1" and includes the audio and video media format, SBC address and port supported by the calling terminal.
  • the media plane device of the audio and video capability network element architecture combines its own media capability "media capability C1" to respond to the control plane device of the audio and video capability network element architecture, completes multimedia resource reservation, and sends a response message to the control plane device.
  • the response message carries "media capability U1" (SDP U1) and includes the audio and video media format, address and port of the media plane device of the audio and video capability network element architecture.
  • the control plane device of the audio and video capability network element architecture sends an Update message to the calling terminal, carrying SDP U1, and performs media negotiation with the calling terminal.
  • the calling terminal responds with 200OK, carrying SDP A3, in which the audio and video media formats are selected from SDP U1, and the resource reservation parameter is incomplete.
  • the calling terminal After the calling terminal completes the reservation of video media resources, it sends an UPDATE message to the control plane device of the audio and video capability network element architecture.
  • the UPDATE message carries SDP A4. If an audio ringback tone is played, steps 13 and 14 are omitted.
  • the control plane device of the audio and video capability network element architecture responds with 200OK, carrying SDP U2.
  • the control plane device of the audio and video capability network element architecture sends a response message to the media plane device of the audio and video capability network element architecture.
  • the response message carries the result of media negotiation with the calling party, "Media Capability U2" (SDP U2), and includes the audio and video media format, SBC address and port on the calling side.
  • the service network element sends a call event control (Play or PlayAndCollect) to the control plane device of the audio and video capability network element architecture to control the audio and video capability network element architecture to play the specified ring tone file.
  • a call event control Player or PlayAndCollect
  • the control plane device of the audio and video capability network element architecture sends a ringing message 180Ring to the calling side, carrying the P-Early-Media header field and the value is sendrecv.
  • the timer is configured to default to 100ms, and the control plane device of the audio and video capability network element architecture sends control information to the media plane device of the audio and video capability network element architecture, where the control information carries relevant information such as the ringtone file number and path to be played.
  • the media plane device of the audio and video capability network element architecture responds to the request successfully processed message.
  • the media plane device of the audio and video capability network element architecture has a ringtone file to be played, this step is omitted; if the media plane device of the audio and video capability network element architecture does not have the ringtone file, the ringtone file is downloaded from the service network element in HTTP streaming mode and saved locally. The media plane device of the audio and video capability network element architecture plays the media content to the calling terminal.
  • the control plane device of the audio and video capability network element architecture receives a 200OK response.
  • the control plane device of the audio and video capability network element architecture reports the call event notification (Answer) message to the service network element.
  • the service network element sends a call event control (EndPlay) message to instruct the control plane device of the audio and video capability network element architecture to end media playback.
  • EndPlay call event control
  • the control plane device of the audio and video capability network element architecture returns an ACK message to the called user.
  • the control plane device of the audio and video capability network element architecture sends a Re-invite message (which does not carry SDP) to the called terminal to obtain the latest media capabilities of the called terminal.
  • the called party responds with 200OK, which carries the latest media information SDP B1.
  • the control plane device of the audio and video capability network element architecture sends an Update message to the calling terminal.
  • the SDP B1 it carries contains the audio media format, called SBC address and port of the called side to update the calling side media information to the call media.
  • the control plane device of the audio and video capability network element architecture forwards the off-hook INVITE 200OK.
  • control plane device of the audio and video capability network element architecture sends an on-hook disconnection message to the media plane device of the audio and video capability network element architecture.
  • the media plane device of the audio and video capability network element architecture returns the playback result as success, releases resources, and ends the playback.
  • the control plane device of the audio and video capability network element architecture After receiving the playback result, the control plane device of the audio and video capability network element architecture reports the playback result to the service network element via a call event notification (PlayResult).
  • PlayResult a call event notification
  • the control plane device of the audio and video capability network element architecture sends an ACK to the called party, and the SDP A5 it carries contains the SBC address and port of the calling party.
  • the calling party and the called party complete the media negotiation, and the calling party and the called party have a conversation.
  • the control plane device of the audio and video capability network element architecture reports the call event notification (Release) to the service network element for disconnection.
  • the service network element sends a call event control (EndCall) to end the session.
  • EndCall a call event control
  • control plane device of the audio and video capability network element architecture transparently transmits BYE to the calling terminal, the calling terminal responds 200OK, and the calling and called terminals call ended.
  • a), b), c), d), e), f), g) are the working processes of the control plane equipment and media plane equipment of the audio and video capability network element architecture.
  • the disclosed embodiment first splits the functions of the audio and video capability network element into the control plane network element and the media plane network element, and then adds a total of 7 messages a), b), c), d), e), f), g) to interact basic information between the control plane equipment of the audio and video capability network element architecture and the media plane equipment of the audio and video capability network element architecture, thereby meeting the requirement that the control plane equipment of the audio and video capability network element architecture must be deployed close to the core network and service network elements (to reduce signaling connection delay), and at the same time meeting the requirement that the media plane equipment is sunk to the access province (to reduce the transmission and IP bearer network bandwidth requirements).
  • the disclosed embodiments improve user experience while reducing investment costs.
  • the video ringback tone service as an example, if the control plane equipment of the audio and video capability network element architecture is centrally deployed in the central province of the region, and the media plane equipment of the audio and video capability network element architecture is sunk in the access province, the demand for inter-provincial long-distance IP bearer network and transmission resources can be effectively reduced. It is estimated that in the scenario of 300 million ringback tone users in the near future and 500 million ringback tone users in the long term, it is expected that 100 million to 500 million yuan of investment can be saved.
  • Number of video ringback tone users The current number of video ringback tone users of a large operator is: 300 million.
  • the media playback bandwidth requirement for every 100 million video ringback tone users is 600 Gbps.
  • the media playback bandwidth requirement for 300 million video ringback tone users is about 1,800 Gbps.
  • the media playback bandwidth requirement for every 100 million video ringback tone users will be 1500 Gbps.
  • the media playback bandwidth requirement for every 500 million video ringback tone users will be about 7500 Gbps.
  • the IP long-distance bearer network can be reduced by 1500Gbps of bandwidth resources, saving investment of approximately RMB 72 million.
  • the transmission network from the regional center province to the access province is temporarily estimated to pass through 2 sets of transmission equipment and 4 ports (i.e., the number of ports that can be saved by adopting the solution proposed in this disclosure).
  • the disclosed embodiment can greatly reduce investment and operation costs and improve user experience by splitting the audio and video capability network element into two parts, including a control plane device and a media plane device; the control plane device is centrally deployed near the core network and the service network element, and the media plane device is dispersedly deployed; the control plane device communicates with the service network element, the core network and the media plane device respectively; the media plane device communicates with the service network element, the control plane device and the core network respectively.
  • the embodiment of the present disclosure further provides a multimedia processing method, which is executed by a control plane device in the audio and video capability network element architecture described in the above embodiment.
  • the method includes:
  • Step 110 receiving a multimedia service event sent by the service network element
  • Step 120 applying for multimedia resources from the media plane device according to the multimedia service event, and receiving a response message sent by the media plane device;
  • Step 130 Perform multimedia negotiation with the terminal according to the response message, and send the negotiation result to the media plane device and the service network element;
  • Step 140 Receive the operation instruction sent by the service network element, and send a control message to the media plane device, so that the media plane device plays the multimedia resource to the terminal according to the control message.
  • a hang-up disconnection message is sent to the media plane device according to the off-hook information, so that the media plane device releases the multimedia resources.
  • the embodiment of the present disclosure also provides a multimedia processing method, which is executed by a media plane device in the audio and video capability network element architecture.
  • the method includes:
  • a control message sent by the control plane device is received, and multimedia resources are played to the terminal according to the control message, wherein the control message is generated by the control plane device according to an operation instruction sent by the received service network element.
  • the disclosed embodiment can greatly reduce investment and operation costs and improve user experience by splitting the audio and video capability network element into two parts, including a control plane device and a media plane device; the control plane device is centrally deployed near the core network and the service network element, and the media plane device is dispersedly deployed; the control plane device communicates with the service network element, the core network and the media plane device respectively; the media plane device communicates with the service network element, the control plane device and the core network respectively.
  • the embodiment of the present disclosure also provides a network element device 700.
  • the network element device includes: a processor 701, a processor 702, a bus interface 703, and a transceiver 704.
  • the processor 701 can be responsible for managing the bus architecture and general processing.
  • the memory 702 can store data used by the processor 701 when performing operations.
  • the network element device 700 can also include: a program stored in the memory 702 and executable on the processor 701, which implements the steps of the method provided in the embodiment of the present disclosure when executed by the processor 701.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 701 and memory represented by memory 702.
  • the bus architecture may link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art. Therefore, the embodiments of the present disclosure will not be further described.
  • the transceiver may be a plurality of components, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium.
  • the disclosed embodiment also provides a non-temporary processor-readable storage medium, on which a computer program is stored.
  • a computer program is stored.
  • the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
  • modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments.
  • the modules or units or components in the embodiments may be combined into one module or unit or component, and may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and/or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

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Abstract

本公开实施例涉及通信技术领域，公开了一种音视频能力网元架构，该音视频能力网元架构包括控制面设备及媒体面设备；所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信。通过上述方式，本公开实施例实现了提升用户体验的同时降低成本。

Description

音视频能力网元架构及多媒体处理方法
相关申请的交叉引用
本公开基于申请号为202211362496.8、申请日为2022年11月02日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开实施例涉及通信技术领域，具体涉及一种音视频能力网元架构及多媒体处理方法。
背景技术
目前，现网音视频能力网元全部功能融合在同一网元内部，且集中在全网8～16个大区中心省份***署的方式，对于非大区中心省份而言，所有音视频媒体的播放均跨省际长途，媒体的播放时延较长，并且对于视频彩铃等有视频需求的业务而言，对长途传输及IP承载网带宽需求较高(以视频彩铃为例，按照目前的720P分辨率，每1000万用户的媒体播放带宽需求达到60Gbps)，并且随着视频媒体分辨率越来越高，带宽需求将持续增加(经估算，以视频彩铃业务为例，未来分辨率提高至1080P时，每1000万用户的带宽需求将达到150Gbps)；若长途传输或IP承载网资源不足，将会影响音视频媒体播放的质量，例如出现马赛克、卡顿等情况，从而影响用户体验。
如果将音视频能力网元整体下放到省内，虽然可解决媒体长途播放的问题，减少传输及IP承载网带宽占用，但会导致音视频能力网元与设置在大区中心省份的核心网设备和业务网元之间的大量信令消息跨长途接续，从而导致信令接续时延过长(以彩铃业务为例，接入省到大区省中间500KM～1500KM距离，媒体接续前的接续时延会增加约300ms～900ms)，同样影响用户体验。
因此，现有的音视频能力网元存在用户体验较差、成本高的问题。
发明内容
鉴于上述问题，本公开实施例提供了一种音视频能力网元架构及多媒体处理方法，用于解决现有技术中存在的音视频能力网元用户体验较差、成本高的问题。
根据本公开实施例的第一方面，提供了一种音视频能力网元架构，所述音视频能力网元架构包括控制面设备及媒体面设备；所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；
所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信。
在一种可选的实施方式中，所述控制面设备与所述核心网及所述业务网元部署在大区中心省；所述媒体面设备部署在各大区中心省对应的接入省。
在一种可选的实施方式中，所述控制面设备利用RESTFUL/HTTP消息与所述业务网元通信，进行呼叫事件通知、呼叫事件订阅、能力调用嵌套和冲突处理功能。
在一种可选的实施方式中，所述控制面设备利用SIP消息与所述核心网的CSCF网元互通完成信令处理功能。
在一种可选的实施方式中，所述控制面设备与所述媒体面设备通信，进行呼叫控制、媒体协商功能。
在一种可选的实施方式中，所述媒体面设备利用RESTFUL/HTTP消息与业务网元通信，完成媒体下载功能。
在一种可选的实施方式中，所述控制面设备接收所述业务网元发起的呼叫事件通知和业务请求；
所述控制面设备向所述媒体面设备申请多媒体资源，所述媒体面设备发送响应消息给所述控制面设备；
所述控制面设备根据所述响应消息与终端进行多媒体协商，并将协商结果发送给所述媒体面设备及所述业务网元；
所述控制面设备接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备；
所述媒体面设备根据所述控制消息向所述终端播放多媒体资源。
根据本公开实施例的第二方面，提供了一种多媒体处理方法，所述方法基于所述的音视频能力网元架构中的控制面设备；所述方法包括：
接收所述业务网元发送的多媒体业务事件；
根据所述多媒体业务事件向所述媒体面设备申请多媒体资源，并接收所述媒体面设备发送的响应消息；
根据所述响应消息与终端进行多媒体协商，并将协商结果发送给所述媒体面设备及所述业务网 元；
接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备，以使所述媒体面设备根据所述控制消息向终端播放多媒体资源。
在一种可选的实施方式中，所述接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备，以使所述媒体面设备根据所述控制消息向终端播放多媒体资源之后，所述方法进一步包括：
根据摘机信息向所述媒体面设备发送挂机拆线消息，以使所述媒体面设备释放所述多媒体资源。
根据本公开实施例的第三方面，提供了一种多媒体处理方法，所述方法基于所述音视频能力网元架构中的媒体面设备。所述方法包括：
接收所述控制面设备发送的多媒体资源申请，并发送响应消息至所述控制面设备，以使所述控制面设备根据所述响应消息与终端进行多媒体协商；所述多媒体资源申请为所述控制面设备根据所述业务网元发送的多媒体业务事件生成的；
接收所述控制面设备的协商结果；
接收所述控制面设备发送的控制消息，根据所述控制消息向终端播放多媒体资源，所述控制消息为所述控制面设备根据接收到的所述业务网元发送的操作指示生成。
根据本公开实施例的第四方面，提供了一种网元设备，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，使得根据上述第二方面或第三方面的多媒体处理方法。
根据本公开实施例的第五方面，提供了一种处理器可读的存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行根据上述第二方面或第三方面所述的多媒体处理方法。
根据本公开实施例的第六方面，提供了一种包括指令的计算机程序产品，所述指令被处理器执行时，使得所述处理器执行根据上述第二方面或第三方面所述的多媒体处理方法。
本公开实施例通过将音视频能力网元拆分为两个部分，包括控制面设备及媒体面设备；所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述媒体面设备及所述核心网通信，能够大大降低投资运营成本、提高用户体验。
上述说明仅是本公开实施例技术方案的概述，为了能够更清楚了解本公开实施例的技术手段，可依照说明书的内容予以实施，并且为了让本公开实施例的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图说明
附图仅用于示出实施方式，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1示出了现有的音视频能力网元的结构示意图；
图2示出了本公开实施例提供的一种音视频能力网元架构的结构示意图；
图3示出了本公开实施例提供的一种音视频能力网元架构的接口结构示意图；
图4示出了本公开实施例提供的一种音视频能力网元架构的信令交互流程示意图；
图5示出了本公开实施例提供的一种音视频能力网元架构的另一信令交互流程示意图；
图6示出了本公开实施例提供的多媒体处理方法的流程示意图。
图7示出了本公开实施例提供的一种网元设备的结构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。
首先，对现有的音视频能力网元所存在的问题进行以下进一步的分析：
音视频能力网元，为上层业务***提供包括呼叫事件订阅及通知、呼叫处理、用户呼叫状态获取、音视频媒体播放(如视频彩铃播放、录音通知播放等)等网络通信能力。目前音视频能力网元已经在彩铃、智能网、IMS防诈骗等业务***得到广泛的应用，并且后续在5G新通话等诸多领域也将引入音视频能力网元的建设和应用。
如图1所示，现网各运营商针对音视频能力网元均采用各类功能融合设置的方式，即时间订阅、呼叫处理、用户状态获取、音视频媒体播放等各功能均融合在音视频能力网元内部(即用一类网元实现全部功能)。同时，在集中化建设的大背景大趋势下，为了提升网络运行效率，降低投资，实现生产建设运 营的集约化，现网各运营商均将全国划分成4～8个大区，每3～8个临近省份的音视频能力网元，以及核心网网元、(调用音视频能力的)业务网元均集中部署在网络资源更为丰富、维护力量更为健壮的大区中心省份；接入省仅保留少数核心网接入转发类网元(如Session Border Controller，SBC)。目前音视频能力网元集中部署的现状，使得非大区中心省份的全部的音视频媒体播放(例如彩铃业务、智能网业务的媒体播放)均跨省进行，从而占用了大区中心至接入省份的大量长途传输及长途IP承载网资源；随着视频业务量的日益增长，势必占用越来越多的长途传输及IP承载网资源。
如果将音视频能力网元直接下沉到省内部署，虽然媒体播放不再占用省际长途传输及IP承载网资源，但在核心网和业务网元仍然集中部署的大背景下，又会引发另一个问题，即：音视频能力网元与核心网、与业务网元之间大量的信令消息(约30条+)在大区中心省份与接入省之间跨省际长途进行接续，虽然信令消息占用的带宽极小，但由于消息数量过多，每条消息均经过500KM～1500KM的长途传输，势必导致信令接续时延长、用户体验较差的结果。
因此，现网音视频能力网元全部功能融合在同一网元内部，且集中在全网8～16个大区中心省份***署的方式，对于非大区中心省份而言，所有音视频媒体的播放均跨省际长途，媒体的播放时延较长，并且对于视频彩铃等有视频需求的业务而言，对长途传输及IP承载网带宽需求较高(以视频彩铃为例，按照目前的720P分辨率，每1000万用户的媒体播放带宽需求达到60Gbps)，并且随着视频媒体分辨率越来越高，带宽需求将持续增加(经估算，以视频彩铃业务为例，未来分辨率提高至1080P时，每1000万用户的带宽需求将达到150Gbps)；若长途传输或IP承载网资源不足，将会影响音视频媒体播放的质量，例如出现马赛克、卡顿等情况，从而影响用户体验。如果将音视频能力网元整体下放到省内，虽然可解决媒体长途播放的问题，减少传输及IP承载网带宽占用，但会导致音视频能力网元与设置在大区中心省份的核心网设备和业务网元之间的大量信令消息跨长途接续，从而导致信令接续时延过长(以彩铃业务为例，接入省到大区省中间500KM～1500KM距离，媒体接续前的接续时延会增加约300ms～900ms)，同样影响用户体验。
基于此，本公开实施例提供一种音视频能力网元架构。图2示出了根据本公开实施例提供的一种音视频能力网元架构的结构示意图。该音视频能力网元架构包括控制面设备及媒体面设备。
其中，所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信。所述控制面设备用于进行音视频网元中对媒体面设备的控制，所述媒体面设备用于进行音视频媒体的播放。具体地，控制面设备利用RESTFUL/HTTP消息与业务网元通信，完成呼叫事件通知、呼叫事件订阅、能力调用嵌套和冲突处理功能；利用SIP(会话发起协议，Session Initiation Protocol)消息与核心网CSCF(呼叫会话控制功能，Call Session Control Function)网元互通完成信令处理功能；与媒体面设备通信，完成呼叫控制、媒体协商等功能。媒体面设备利用RESTFUL/HTTP消息与业务网元通信，完成媒体下载功能；与控制面设备通信，完成呼叫控制、媒体协商等功能；利用RTP(实时传输协议，real-time transport protocol)消息与核心网SBC、IM-MGW等网元通信，完成媒体播放功能。其中，业务网元为音视频的业务网元。本公开实施例将音视频能力网元的功能进行拆分及重构，把与核心网CSCF、业务网元关系密切的“呼叫事件订阅及通知、呼叫信令处理、用户呼叫状态获取”等控制功能和与SBC关系密切的“音视频媒体播放”等媒体功能进行拆分，将实现控制功能的网元定义为控制面设备，将实现媒体功能的音视频播放能力的网元定义为媒体面设备。使得音视频能力网元内部不同功能实体可按需部署在不同的位置，使得音视频能力开放的整体网络布局可以更为合理。
本公开实施例中，所述控制面设备与所述核心网及所述业务网元部署在大区中心身份；所述媒体面设备下沉部署在各大区中心对应的接入省。控制面设备仍然集中在大区中心省份部署，媒体面设备下沉至各省省内部署。控制面设备与核心网以及上层需调用音视频能力的业务网元一同在大区中心部署，其间距离近，信令接续时延短；音视频能力网元-媒体面下沉部署在31省省内，与终端用户之间距离近，媒体播放时延短，省内呼叫的媒体播放均不占用省际长途传输和IP承载网资源，从而在节省资源、降低投资成本的同时提升了用户体验。
如图3所示，本公开实施例中，该音视频能力网元架构的控制面设备及媒体面设备之间以及与其它设备之间通过预设的多个接口进行通信。其中，控制面设备与媒体面设备，通过IF1接口通信，实现控制面设备对媒体面设备的业务控制。控制面设备通过IF2与音视频业务网元进行通信，所述控制面设备通过IF4与核心网CSCF通信。所述媒体面设备通过IF3与音视频业务网元通信；所述媒体面设备通过IF5与SBC/IM-MGW通信；所述媒体面设备通过IF6与网管通信。表1列出了各个接口的功能及承载方式。
表1：

其中，如图4所示，本公开实施例的音视频能力网元架构的工作过程如下：
1、终端触发业务，业务网元向音视频能力网元架构发起呼叫事件通知和业务请求。
2、所述控制面设备接收所述业务网元发起的呼叫事件通知和业务请求。
3、所述控制面设备向所述媒体面设备申请多媒体资源(媒体能力C1)，所述媒体面设备发送响应消息(媒体能力U1)给所述控制面设备。
4、所述控制面设备根据所述响应消息与终端进行多媒体协商，并将协商结果(媒体能力U2)发送给所述媒体面设备及所述业务网元。
5、所述控制面设备接收所述业务网元发送的操作指示，并发送控制消息(如放音等)给所述媒体面设备。
6、所述媒体面设备根据所述控制消息向所述终端播放多媒体资源。
其中，当终端对多媒体资源使用完毕时，控制面设备发送挂机拆线消息给媒体面设备，媒体面设备根据接收到的挂机拆线消息，结束多媒体资源播放，进行多媒体资源释放。
本公开实施例以彩铃业务为例，如图5所示，上述音视频网元架构的多媒体信令实现流程如下：
1)主叫终端进行音频起呼，发送INVITE消息经由主叫侧核心网到达被叫侧核心网，被叫侧音视频能力网元架构的控制面设备收到INVITE消息，其中，INVITE消息携带的主叫侧媒体能力SDP A1只有音频媒体行。
A)音视频能力网元架构的控制面设备以呼叫事件通知(Begin)上报音视频能力网元的业务网元，并携带主、被叫号码，业务服务器返回响应。
B)业务网元判断被叫终端为彩铃用户，以呼叫事件控制(Continue)指示音视频能力网元架构的控制面设备继续呼叫。
2)-3)音视频能力网元架构的控制面设备转发INVITE消息给核心网S-CSCF，S-CSCF继续寻呼被叫终端。
4)被叫终端收到INVITE消息后应答183消息，所述183消息携带被叫终端的媒体信息SDP B1，SDP B1为从SDP A1中选择的被叫终端支持的音频媒体格式，183消息中携带有100rel，100rel表示需要主叫终端进行PRACK确认，被叫终端需要申请通话资源。
5)主叫终端收到183消息后发送PRACK，确认收到183消息，进行通话资源预留。
6)被叫终端收到PRACK应答200OK。
7)主叫终端的通话资源预留完成后，主叫终端发送UPDATE给被叫终端，携带的音频媒体SDP A2包含SDP B1，其中资源预留参数为已完成。
8)被叫终端收到UPDATE后、且资源预留已完成后，应答200OK，该200OK携带的被叫终端的音频媒体SDP B2中包含SDP A2，其中资源预留参数为已完成。
9)-10)被叫终端的振铃发送180消息(180Ring)，被叫侧音视频能力网元架构的控制面设备收到180Ring。
C)音视频能力网元架构的控制面设备以呼叫事件通知(Ringing)上报业务网元，其携带主叫终端的媒体能力SDP A1。
D)业务网元下发音频或视频媒体协商呼叫事件控制(CatInd)消息，根据播放的媒体内容SDP(会 话描述协议，session description protocol)信息与主叫终端的SDP A1，综合得到SDP C1(媒体能力C1)。
a)音视频能力网元架构的控制面设备向音视频能力网元架构的媒体面设备申请多媒体资源，并与终端进行媒体协商，媒体协商时携带“媒体能力C1”且包括主叫终端支持的音视频媒体格式、SBC地址和端口。
b)音视频能力网元架构的媒体面设备结合自身媒体能力“媒体能力C1”，响应音视频能力网元架构的控制面设备，完成多媒体资源预留，发送响应消息给控制面设备，响应消息中携带“媒体能力U1”(SDP U1)，且包括音视频能力网元架构的媒体面设备的音视频媒体格式、地址和端口。
11)音视频能力网元架构的控制面设备向主叫终端发送Update消息，携带SDP U1，与主叫终端进行媒体协商。
12)主叫终端应答200OK，携带SDP A3，其中音、视频媒体格式从SDP U1中选择，资源预留参数为未完成。
13)主叫终端完成视频媒体资源预留后，发送UPDATE消息给音视频能力网元架构的控制面设备，UPDATE消息中携带SDP A4，如果播放的是音频彩铃，则无步骤13和14。
14)音视频能力网元架构的控制面设备应答200OK，携带SDP U2。
c)音视频能力网元架构的控制面设备向音视频能力网元架构的媒体面设备发送响应消息，该响应消息中携带与主叫媒体协商结果“媒体能力U2”(SDP U2)，且包括主叫侧音视频媒体格式、SBC地址和端口。
E)音视频能力网元架构的控制面设备与主叫终端完成媒体协商后，以呼叫事件通知(CatResult)上报媒体协商结果SDP U2。
F)业务网元下发呼叫事件控制(Play或PlayAndCollect)给音视频能力网元架构的控制面设备，以控制音视频能力网元架构播放指定的铃音文件。
15)音视频能力网元架构的控制面设备向主叫侧发送振铃消息180Ring，携带P-Early-Media头域且值为sendrecv。
d)音视频能力网元架构的控制面设备给主叫终端发送振铃消息180Ring后，配置定时器默认100ms，音视频能力网元架构的控制面设备发送控制信息给音视频能力网元架构的媒体面设备，其中控制信息中携带有要播放的铃音文件编号、路径等相关信息。
e)音视频能力网元架构的媒体面设备应答请求成功处理消息。
G)音视频能力网元架构的媒体面设备如果有要播放的铃音文件，则无此步骤；如果音视频能力网元架构的媒体面设备没有该铃音文件，则从业务网元以HTTP流的方式下载铃音文件到本地保存。音视频能力网元架构的媒体面设备给主叫终端播放媒体内容。
16)-17)被叫终端摘机时，音视频能力网元架构的控制面设备收到200OK响应。
H)音视频能力网元架构的控制面设备以呼叫事件通知(Answer)消息上报业务网元。
I)业务网元下发呼叫事件控制(EndPlay)消息，指示音视频能力网元架构的控制面设备结束媒体播放。
18)-19)音视频能力网元架构的控制面设备返回被叫用户ACK消息。
20)-21)音视频能力网元架构的控制面设备向被叫终端发送Re-invite消息(其不携带SDP)，以获取被叫终端的最新媒体能力。
22)-23)被叫侧应答200OK，其中携带最新的媒体信息SDP B1。
24)音视频能力网元架构的控制面设备向主叫终端发送Update消息，其携带的SDP B1包含被叫侧的音频媒体格式、被叫SBC地址和端口，以更新主叫侧媒体信息为通话媒体。
25)主叫侧应答200OK，携带SDP A5。
26)音视频能力网元架构的控制面设备转发摘机INVITE 200OK。
27)主叫应答ACK。
f)音视频能力网元架构的控制面设备向音视频能力网元架构的媒体面设备发送挂机拆线消息。
g)音视频能力网元架构的媒体面设备返回放音结果为成功，释放资源，结束播放。
J)音视频能力网元架构的控制面设备收到放音结果后，以呼叫事件通知(PlayResult)将放音结果上报给业务网元。
28)-29)音视频能力网元架构的控制面设备发送ACK给被叫侧，其携带的SDP A5包含主叫侧的SBC地址和端口。主被叫完成媒体协商，主被叫进行通话。
30)-31)被叫挂机。
K)音视频能力网元架构的控制面设备以呼叫事件通知(Release)上报给业务网元进行拆线。
L)业务网元下发呼叫事件控制(EndCall)结束本次会话。
32)-35)音视频能力网元架构的控制面设备透传BYE给主叫终端，主叫终端应答200OK，主被叫 通话结束。
以上流程中，a)、b)、c)、d)、e)、f)、g)为音视频能力网元架构的控制面设备及媒体面设备的工作过程。本公开实施例首先将音视频能力网元进行功能拆分，拆分成控制面网元和媒体面网元，然后在音视频能力网元架构的控制面设备和音视频能力网元架构的媒体面设备之间，通过增加a)、b)、c)、d)、e)、f)、g)共7条消息交互基本信息，满足了音视频能力网元架构的控制面设备必须靠近核心网和业务网元(以减小信令接续时延)部署的需求，同时满足了媒体面设备下沉到接入省(以减小传输及IP承载网带宽需求)的需求。
本公开实施例在提升用户体验的同时降低投资成本。以视频彩铃业务为例，若将音视频能力网元架构的控制面设备集中部署在大区中心省，音视频能力网元架构的媒体面设备下沉在接入省内，可以有效减少省际长途IP承载网及传输资源需求。预计在近期3亿彩铃用户，远期5亿彩铃用户的场景下，预期可节省投资1亿～5亿。
1、视频彩铃用户数：
(1)视频彩铃用户数：某大型运营商近期现有视频彩铃用户数：3亿。
(2)某大型运营商远期预估视频彩铃用户数：5亿。
2、视频彩铃媒体播放带宽需求测算：
(1)按照现网主流媒体视频720p分辨率考虑，每1亿视频彩铃用户媒体播放带宽需求600Gbps，近期3亿视频彩铃用户媒体播放带宽需求约1800Gbps。
(2)未来媒体视频分辨率提升至1080p时，每1亿视频彩铃用户媒体播放带宽需求1500Gbps，远期5亿视频彩铃用户媒体播放带宽需求约7500Gbps
3、IP承载网节省投资分析：
根据IP承载网网络架构，以及BR/CR设备的综合造价分析：
(1)BR/CR设备，每个100GE端口综合造价：40万元。
(2)大区中心省至接入省IP承载网路由，平均需经过的BR/CR设备端口数量(即采用本公开提出的方案可节省的端口数)：12个。
(3)近期可减少IP长途承载网1500Gbps带宽资源，可节约投资约：7200万元。
(4)远期可减少7500Gbps带宽资源，可节约投资约：3.6亿元
4、传输设备节省投资分析：
根据传输网网络架构，以及传输设备端口的综合造价分析：
(1)传输设备每100Gbps端口综合造价：50万。
(2)大区中心省至接入省传输网，暂按经过2套传输设备4端口(即采用本公开提出的方案可节省的端口数)估算。
(3)近期可减少1800Gbps的传输设备，可节约投资约：3600万元。
(4)远期可减少7500Gbps的传输设备，可节约投资约：1.5亿元。
本公开实施例通过将音视频能力网元拆分为两个部分，包括控制面设备及媒体面设备；所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信，能够大大降低投资运营成本、提高用户体验。
如图6所示，本公开实施例还提供一种多媒体处理方法，该方法由上述实施例所述的音视频能力网元架构中的控制面设备执行。所述方法包括：
步骤110：接收所述业务网元发送的多媒体业务事件；
步骤120：根据所述多媒体业务事件向所述媒体面设备申请多媒体资源，并接收所述媒体面设备发送的响应消息；
步骤130：根据所述响应消息与终端进行多媒体协商，并将协商结果发送给所述媒体面设备及所述业务网元；
步骤140：接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备，以使所述媒体面设备根据所述控制消息向终端播放多媒体资源。
其中，当终端摘机时，根据摘机信息向所述媒体面设备发送挂机拆线消息，以使所述媒体面设备释放所述多媒体资源。
本公开实施例的具体方法步骤与上述音视频能力网元架构实施例中的控制面设备的工作过程大体一致，此处不再赘述。
本公开实施例还提供一种多媒体处理方法，该方法由所述的音视频能力网元架构中的媒体面设备执行。所述方法包括：
接收所述控制面设备发送的多媒体资源申请，并发送响应消息至所述控制面设备，以使所述控制面设备根据所述响应消息与终端进行多媒体协商，其中所述多媒体资源申请为所述控制面设备根据所述业务网元发送的多媒体业务事件生成的；
接收所述控制面设备的协商结果；
接收所述控制面设备发送的控制消息，根据所述控制消息向终端播放多媒体资源，其中所述控制消息为所述控制面设备根据接收到的所述业务网元发送的操作指示生成。
本公开实施例的具体方法步骤与上述音视频能力网元架构实施例中的媒体面设备的工作过程大体一致，此处不再赘述。
本公开实施例通过将音视频能力网元拆分为两个部分，包括控制面设备及媒体面设备；所述控制面设备近核心网和业务网元集中部署，所述媒体面设备分散部署；所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信，能够大大降低投资运营成本、提高用户体验。
本公开实施例还提供了一种网元设备700。如图7所示，网元设备包括：处理器701、处理器702、总线接口703、收发机704。其中，处理器701可以负责管理总线架构和通常的处理。存储器702可以存储处理器701在执行操作时所使用的数据。本公开实施例中，网元设备700还可以包括：存储在存储器702上并可在处理器701上运行的程序，该程序被处理器701执行时实现本公开实施例提供的方法的步骤。
在一些实施方式中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器701代表的一个或多个处理器和存储器702代表的存储器的各种电路链接在一起。在一些实施方式中，总线架构可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的。因此，本公开实施例不再对其进行进一步描述。在一些实施方式中，收发机可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。
本公开实施例还提供一种非暂时性处理器可读存储介质，处理器可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。
在此提供的算法或显示不与任何特定计算机、虚拟***或者其它设备固有相关。各种通用***也可以与基于在此的示教一起使用。根据上面的描述，构造这类***所要求的结构是显而易见的。此外，本公开实施例也不针对任何特定编程语言。应当明白，可以利用各种编程语言实现在此描述的本公开的内容，并且上面对特定语言所做的描述是为了披露本公开的最佳实施方式。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本公开的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本公开并帮助理解各个发明方面中的一个或多个，在上面对本公开的示例性实施例的描述中，本公开实施例的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释成反映如下意图：即所要求保护的本公开要求比在每个权利要求中所明确记载的特征更多的特征。
本领域技术人员可以理解，可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件，以及可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外，可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述，本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
应该注意的是上述实施例对本公开进行说明而不是对本公开进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本公开可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。上述实施例中的步骤，除有特殊说明外，不应理解为对执行顺序的限定。

Claims (13)

  1. 一种音视频能力网元架构，其中，所述音视频能力网元架构包括控制面设备及媒体面设备；所述控制面设备与核心网和业务网元集中部署，所述媒体面设备分散部署；
    其中，所述控制面设备分别与业务网元、核心网及所述媒体面设备通信；所述媒体面设备分别与业务网元、所述控制面设备及所述核心网通信。
  2. 根据权利要求1所述的音视频能力网元架构，其中，所述控制面设备与所述核心网及所述业务网元部署在大区中心省；所述媒体面设备部署在各大区中心省对应的接入省。
  3. 根据权利要求1所述的音视频能力网元架构，其中，所述控制面设备利用RESTFUL/HTTP消息与所述业务网元通信，进行呼叫事件通知、呼叫事件订阅、能力调用嵌套和冲突处理功能。
  4. 根据权利要求1所述的音视频能力网元架构，其中，所述控制面设备利用SIP消息与所述核心网的CSCF网元互通完成信令处理功能。
  5. 根据权利要求1所述的音视频能力网元架构，其中，所述控制面设备与所述媒体面设备通信，进行呼叫控制、媒体协商功能。
  6. 根据权利要求1所述的音视频能力网元架构，其中，所述媒体面设备利用RESTFUL/HTTP消息与所述业务网元通信，完成媒体下载功能。
  7. 根据权利要求1所述的音视频能力网元架构，其中，
    所述控制面设备接收所述业务网元发起的呼叫事件通知和业务请求；
    所述控制面设备向所述媒体面设备发送多媒体资源申请，所述媒体面设备发送响应消息给所述控制面设备；
    所述控制面设备根据所述响应消息与终端进行多媒体协商，并将协商结果发送给所述媒体面设备及所述业务网元；
    所述控制面设备接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备；
    所述媒体面设备根据所述控制消息向所述终端播放多媒体资源。
  8. 一种多媒体处理方法，所述方法由如权利要求1-7任一项所述的音视频能力网元架构中的控制面设备执行，所述方法包括：
    接收所述业务网元发送的多媒体业务事件；
    根据所述多媒体业务事件向所述媒体面设备发送多媒体资源申请，并接收所述媒体面设备发送的响应消息；
    根据所述响应消息与终端进行多媒体协商，并将协商结果发送给所述媒体面设备及所述业务网元；以及
    接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备，以使所述媒体面设备根据所述控制消息向终端播放多媒体资源。
  9. 根据权利要求8所述的方法，其中，所述接收所述业务网元发送的操作指示，并发送控制消息给所述媒体面设备，以使所述媒体面设备根据所述控制消息向终端播放多媒体资源之后，所述方法进一步包括：
    根据摘机信息向所述媒体面设备发送挂机拆线消息，以使所述媒体面设备释放所述多媒体资源。
  10. 一种多媒体处理方法，所述方法由如权利要求1-7任一项所述的音视频能力网元架构中的媒体面设备执行，所述方法包括：
    接收所述控制面设备发送的多媒体资源申请，并发送响应消息至所述控制面设备，以使所述控制面设备根据所述响应消息与终端进行多媒体协商，其中所述多媒体资源申请为所述控制面设备根据所述业务网元发送的多媒体业务事件生成的；
    接收所述控制面设备的协商结果；以及
    接收所述控制面设备发送的控制消息，根据所述控制消息向终端播放多媒体资源，其中所述控制消息为所述控制面设备根据接收到的所述业务网元发送的操作指示生成。
  11. 一种网元设备，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，使得根据权利要求8-9中任一项或权利要求10所述的 多媒体处理方法。
  12. 一种处理器可读的存储介质，其中，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求8至9任一项或权利要求10所述的多媒体处理方法。
  13. 一种包括指令的计算机程序产品，其中，所述指令被处理器执行时，使得所述处理器执行根据权利要求8-9中任一项或权利要求10所述的多媒体处理方法。
PCT/CN2023/128432 2022-11-02 2023-10-31 音视频能力网元架构及多媒体处理方法 WO2024093996A1 (zh)

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