WO2018064925A1 - Procédé et appareil pour générer un message de protocole de description de session - Google Patents

Procédé et appareil pour générer un message de protocole de description de session Download PDF

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Publication number
WO2018064925A1
WO2018064925A1 PCT/CN2017/100688 CN2017100688W WO2018064925A1 WO 2018064925 A1 WO2018064925 A1 WO 2018064925A1 CN 2017100688 W CN2017100688 W CN 2017100688W WO 2018064925 A1 WO2018064925 A1 WO 2018064925A1
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WIPO (PCT)
Prior art keywords
multicast source
session description
protocol message
description protocol
multicast
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PCT/CN2017/100688
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English (en)
Chinese (zh)
Inventor
范红霞
王芳
李继红
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中兴通讯股份有限公司
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Publication of WO2018064925A1 publication Critical patent/WO2018064925A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • 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
    • H04N21/643—Communication protocols
    • 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
    • H04N21/643—Communication protocols
    • H04N21/64322—IP

Definitions

  • the present application relates to the field of communications, for example, to a session description protocol message generating method and apparatus.
  • the channel created on the streaming server has an inbound Session Description Protocol (SDP) and an outgoing SDP.
  • SDP Session Description Protocol
  • the incoming SDP is used to describe the media attribute of the incoming multicast stream received by the channel, and the outgoing SDP describes the media attribute of the channel outgoing multicast stream after transcoding by the streaming server.
  • the streaming media server generally uses a standard Internet Group Management Protocol (IGMP) to join the channel SDP to describe the multicast group.
  • IGMP group management protocol has three versions: V1, V2 and V3.
  • IGMPV3 adds a filtering mode to the multicast source based on the compatibility and inheritance of IGMPV1 and IGMPV2.
  • the host can only receive multicast information from a specific source. Due to the feature of IGMPV3, if the streaming media server joins the multicast to obtain the channel code stream by using the IGMPV3 protocol, there is usually a problem that the channel receives the multicast code stream and is disconnected.
  • the method and device for generating a session description protocol message provided by the embodiment of the present disclosure solves the problem that only one legal multicast source can be determined according to the session description protocol message, so that the channel receiving multicast code stream is not smooth.
  • an embodiment of the present disclosure provides a method for generating a session description protocol message, including:
  • the session description protocol message format includes a first field for recording a first multicast source identifier, and a second field for recording a second multicast source identifier;
  • the session description protocol message is used to set the legal multicast source.
  • the embodiment of the present disclosure further provides a session description protocol message generating apparatus, including:
  • the session description protocol message format invoking module is configured to invoke a session description protocol message format, where the session description protocol message format includes a first field for recording the first multicast source identifier, and a second for recording the second multicast source identifier. Two fields;
  • the multicast source identifier obtaining module is configured to obtain the first multicast source identifier and the at least one second multicast source identifier.
  • the session description protocol message generating module is configured to generate a session description protocol message according to the first multicast source identifier and the at least one second multicast source identifier, where the session description protocol message is used to set the legal multicast source.
  • the embodiment of the present disclosure further provides a computer storage medium having stored therein computer executable instructions for performing the session description protocol message generation method of any of the foregoing.
  • An embodiment of the present disclosure further provides an electronic device, including:
  • At least one processor At least one processor
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.
  • a session description protocol message generating method, apparatus, and computer storage medium by calling a session description protocol message format, the session description protocol message format includes a first field for recording a first multicast source identifier, and The second field of the second multicast source identifier is recorded; the first multicast source identifier and the at least one second multicast source identifier are obtained; and the session description protocol is generated according to the first multicast source identifier and the at least one second multicast source identifier.
  • Session Description Protocol message is used to set the legal multicast source.
  • the first multicast source identifier and the at least one may be generated by including a first field for recording the first multicast source identifier and a session description protocol format for recording the second field of the second multicast source identifier.
  • the session description protocol message of the second multicast source identifier, the first multicast source identifier may be determined according to the session description protocol message including the first multicast source identifier and the at least one second multicast source identifier And identifying the multicast source corresponding to the at least one second multicast source identifier, and setting the multicast source as a legal multicast source, so that when the channel receives the multicast code stream, the first multicast can be received according to the multicast source identifier.
  • the multicast code stream of the multicast source corresponding to the source identifier and the at least one second multicast source identifier can receive the multicast code stream sent by different multicast sources, and only one multicast source can be received in the related art.
  • the manner of sending the multicast stream improves the smoothness of the channel receiving the multicast stream.
  • FIG. 1 is a flowchart of a method for generating a session description protocol message according to Embodiment 1 of the present disclosure
  • FIG. 2 is a schematic diagram of an SDP content template with a private session level attribute added according to Embodiment 1 of the present disclosure
  • FIG. 3 is a flowchart of a method for transmitting a multicast code stream in a non-network-wide multicast mode according to Embodiment 1 of the present disclosure
  • FIG. 4 is a schematic diagram of a session description protocol message generating apparatus according to Embodiment 2 of the present disclosure
  • FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • An embodiment of the present disclosure provides a method for generating a session description protocol message. Referring to FIG. 1, the method includes:
  • Step S101 the session description protocol message format is invoked, and the session description protocol message format includes a first field for recording the first multicast source identifier, and a second field for recording the second multicast source identifier.
  • Step S102 Acquire a first multicast source identifier and at least one second multicast source identifier.
  • Step S103 Generate a session description protocol message according to the first multicast source identifier and the at least one second multicast source identifier, where the session description protocol message is used to set the legal multicast source.
  • the SDP when the multicast stream is received, the SDP only carries one multicast source address.
  • the multicast source is added to the IPTV multicast channel, the multicast source is added to the multicast group based on the multicast source address. Only the multicast code stream corresponding to the multicast source is received, and the multicast code stream corresponding to other multicast sources cannot be received, so that the channel does not receive the multicast code stream, and the multicast stream is not received smoothly.
  • the session description protocol message generating method provided in this embodiment includes a first field that is used to record the identifier of the first multicast source by calling, And a session description protocol message format for recording a second field of the second multicast source identifier, and generating a first multicast source identifier and at least one second multicast source identifier and a session description protocol message.
  • the session description protocol message including the first multicast source identifier and the at least one second multicast source identifier may carry more multicasts than the session description protocol message carrying only one multicast source address in the related art. Source identification information, so that more multicast sources can be added to the multicast group to improve the smoothness of the channel receiving the multicast stream.
  • the session description protocol message format is invoked, and the preset session description protocol message format may be invoked, where the preset session description protocol message format may include a first field for recording the first multicast source identifier, and The second field of the second multicast source identifier is recorded; that is, the preset session description protocol message format is configured with the first field and the second field to store the multicast source identifier information.
  • the preset session description protocol message format may be: modifying the original session description protocol message format based on the related original session description protocol message format, where the original session description protocol message format may include a source for indicating the multicast source.
  • the o field of the address that is, the address information of the multicast source is stored in the o field, so that the channel determines the legal multicast source according to the address information of the multicast source in the o field.
  • the second field may be additionally set on the basis of the original session description protocol message. The second multicast source identifier.
  • a session description protocol message format including a first field for recording the first multicast source identifier and a second field for recording the second multicast source identifier may be preset, and when the legal multicast source setting is performed, according to The session description protocol message format generates a session description protocol message, and sets the legal multicast source.
  • the first multicast source identifier and the at least one second multicast source identifier are obtained, and the session description protocol message is generated according to the first multicast source identifier and the at least one second multicast source identifier, including: Writing, by the first multicast source identifier, the first field, and writing the at least one second multicast source identifier to the second field to generate a session description protocol message; or by writing the first multicast source identifier to the first field, and The first multicast source identifier and the at least one second multicast source identifier are written in the second field to generate the session description protocol message.
  • the first multicast source identifier may be written into the first field, and the second multicast source identifier may be written into the second field; or after the first multicast source identifier is written into the first field, The first multicast source identifier and the at least one second multicast source identifier are written together in the second field; the setting may be performed as needed, which is not limited in this embodiment.
  • the session description protocol message in this embodiment may include: an inbound session description protocol message and/or a message Describe the protocol message to the session. That is, for an IPTV multicast system, the session description protocol message may refer to an inbound session description protocol message of a CDN central node in a full network multicast mode, or an inbound session description protocol of a CDN regional node in a full network multicast mode. The inbound session description protocol message may also refer to an inbound session description protocol message of the central node on demand module in the non-network-wide multicast mode.
  • the outgoing session description protocol message may refer to an outgoing session description protocol message of a CDN central node in a full network multicast mode, or an outgoing session description protocol message of a central node channel module in a non-network-wide multicast mode.
  • the outgoing session description protocol message of the CDN central node in the network-wide multicast mode is the inbound session description protocol message of the CDN regional node
  • the outgoing session description protocol message of the central node channel module in the non-network-wide multicast mode is The inbound session description protocol message of the central node on demand module.
  • the multicast source identifier includes address information of the multicast source.
  • the address information of the multicast source can be used as the identifier of the multicast source.
  • the legal multicast source is set, the legal multicast source can be set according to the address information of the multicast source.
  • the multicast source identifier may also be other information that can identify the multicast source.
  • the process of generating the session description protocol message may include setting a second field in the session description protocol message, and adding the multicast stored in the o field in the second field.
  • Other multicast source address information other than source address information; the second field may be a private session attribute field.
  • the multicast source in this embodiment may include: an encoder or a streaming media server.
  • the session description protocol message in this embodiment is an inbound session description protocol message, and the inbound session description protocol message is an inbound session description protocol message of the central node in the network-wide multicast mode, or is a non-full network group.
  • the multicast source may be an encoder; that is, the identifier information, such as the address information of the encoder, carried in the incoming session description protocol message.
  • the session description protocol message is an outgoing session description protocol message
  • the outgoing session description protocol message is an outbound session description protocol message of the central node in the network-wide multicast mode, or the center in the non-network-wide multicast mode.
  • the multicast source is a streaming media server; that is, the identifier information, such as the address information of the streaming media server, carried in the outgoing session description protocol message.
  • the corresponding multicast source may be added to the group according to the multicast source identifier stored in the session description protocol message.
  • the multicast code stream sent by the legal multicast source is received.
  • the legal multicast source is determined according to the multicast source identifier, including: Add the multicast source to the multicast group. Set the multicast source to be added to the multicast group as a legal multicast source.
  • the multicast source corresponding to the parsed multicast source identifier is added to the multicast group as the specified legal source, so that the multicast stream sent by these sources is Streaming media can be received normally, so that the channel works properly.
  • the use of IGMPV3 usually causes the channel to receive the multicast stream to be interrupted, that is, the channel receives the multicast stream.
  • the session description protocol message generating method provided in this embodiment may be used for generating a session description protocol message in a CDN network of a full network multicast mode and a non-full network multicast mode.
  • the CDN central node channel receives the multicast code stream sent by the encoder.
  • the channel into the SDP contains only one multicast source IP address, and the central node streaming server only joins the multicast.
  • This multicast source IP address is specified.
  • the multicast code stream sent by other IP encoders cannot be received in the IGMPV3 mode because the multicast source address does not match. As a result, the channel cannot receive the incoming multicast stream and is interrupted. .
  • the area node receives the outgoing multicast code stream of the central node channel as the inbound code stream of the channel.
  • the central node generally includes multiple streaming media servers. If the streaming media A fails, the channel will be migrated to another streaming media B.
  • the source IP of the multicast stream sent by the channel will change and become streaming media.
  • B's IP That is to say, the source IP of the upper-level central node multicast code stream received by the lower-level regional center channel may come from a plurality of different streaming media IPs.
  • the streaming media joins the multicast group according to the multicast source IP address specified by the o field in the SDP. Only the multicast stream sent by the multicast source is received. When the channel is migrated, the multicast code sent by other multicast sources is generated. The stream is discarded, causing the regional node channel to receive no incoming traffic to the multicast stream.
  • the private session attribute field can be added to the channel inbound SDP, that is, the second field is used to indicate the IP address of the multicast source other than the o field, and the flow
  • the media joins the IP represented by the o field and the private session attribute field as a specified source to the multicast, so that the multicast code stream sent by these multicast sources can be received normally, so that the channel works normally.
  • AddrType is the address type and Address
  • Address is an IPv4 address or an IPv6 address.
  • the encoder address that can be used as a legal multicast source other than the encoder address described by the o field in the private session attribute field of the inbound SDP of the central node may be described in the private session attribute field of the outgoing node of the central node.
  • the address of the streaming server that can serve as a legitimate multicast source in addition to the address of the streaming server described by the o field.
  • the streaming server can receive the multicast stream normally, so that the channel works normally.
  • the solution can solve the problem of central node and regional node disconnection in the whole network multicast mode and the central node disconnection in the non-full network multicast mode.
  • the method for generating a session description protocol message in this embodiment may be used in a non-full network multicast mode in an IPTV CDN network.
  • the center The manner in which the node receives the channel incoming multicast stream is the same as that of the central node in the whole network multicast mode. Therefore, the channel disconnection problem also exists in the IGMPV3 mode.
  • the lower-area node unicasts to the center through the Real Time Streaming Protocol (RTSP).
  • RTSP Real Time Streaming Protocol
  • the node obtains the channel incoming code stream.
  • Each streaming server includes a channel module and an on-demand module.
  • the channel module is responsible for receiving the incoming stream, sending the outgoing stream and generating the channel outgoing SDP
  • the on-demand module is responsible for receiving the multicast stream from the channel module and transmitting it to the lower relay channel.
  • the central node on-demand module receives the multicast code stream sent by the central node channel module according to the SDP generated by the central node channel. Because the SDP contains only one multicast source address of the o field, only one multicast source address is specified, that is, on-demand The module can only receive the multicast stream sent by a streaming server. If the channel is migrated to another streaming server, the central node broadcast module in IGMPV3 mode will send the multicast source specified by the multicast source.
  • the multicast source of the code stream is inconsistent and the multicast code stream is not received, so that the channel of the area node does not receive the code stream and is disconnected. Therefore, for a regional node in the non-network-wide multicast mode, the code that can be used as a legal multicast source other than the encoder address described by the o field can be described in the private session attribute field of the incoming SDP of the central node channel module.
  • the multicast source IP list is added to the field in which the service sends the channel creation message to the streaming media server. When the multicast type channel is used, the streaming server sends the generated channel to the SDP according to the list. Insert a private session attribute field indicating the multicast source IP.
  • the service module creates a channel to the streaming server.
  • a multicast source IP list is sent.
  • the multicast source IP list contains the IP addresses of all the streaming media servers of the central node.
  • the channel module of the center is the service module creates a channel to the streaming server.
  • the on-demand module Since all the streaming media server IPs of the central node are used as the source of the multicast stream, even if the channels are migrated on different streaming media servers, the on-demand module will not affect the receiving of the multicast stream, so that the regional central node can receive the packets normally. Channel incoming code stream.
  • the solution can solve the problem of channel disconnection of the regional node in the non-network-wide multicast mode.
  • the session description protocol message generating method is configured to invoke a session description protocol message format, where the session description protocol message format includes a first field for recording a first multicast source identifier, and a second multicast source identifier for recording a second field; obtaining a first multicast source identifier and at least one second multicast source identifier; generating a session description protocol message according to the first multicast source identifier and the at least one second multicast source identifier; the session description protocol message is used Set the legal multicast source. That is, the first multicast source identifier and the at least one may be generated by including a first field for recording the first multicast source identifier and a session description protocol format for recording the second field of the second multicast source identifier.
  • the session description protocol message that is identified by the second multicast source may determine the first multicast source identifier and the at least one second multicast according to the session description protocol message that includes the first multicast source identifier and the at least one second multicast source identifier.
  • the multicast source corresponding to the source identifier enables the channel to receive the multicast stream of the multicast source corresponding to the first multicast source identifier and the at least one second multicast source identifier according to the multicast source identifier. That is, the multicast code stream sent by different multicast sources can be received, and the fluency of the channel receiving the multicast code stream is improved compared to the manner in which only the multicast code stream sent by one multicast source can be received in the related art.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the present disclosure provides a session description protocol message generating apparatus.
  • the method includes: a session description protocol message format invoking module 41, a multicast source identifier obtaining module 42 and a session description protocol message generating module 43.
  • the protocol message format invoking module 41 is configured to invoke a session description protocol message format, the session description protocol message format includes a first field for recording the first multicast source identifier, and a second field for recording the second multicast source identifier
  • the multicast source identifier obtaining module 42 is configured to obtain the first multicast source identifier and the at least one second multicast source identifier;
  • the session description protocol message generating module 43 is configured to identify the first multicast source identifier and the at least one second
  • the multicast source identifier generates a session description protocol message, and the session description protocol message is used to set a legal multicast source.
  • the SDP when the multicast stream is received, the SDP only carries one multicast source address.
  • the multicast source is added to the IPTV multicast channel, the multicast source is added to the multicast group based on the multicast source address. Only the multicast code stream corresponding to the multicast source is received, and the multicast code stream corresponding to other multicast sources cannot be received, so that the channel does not receive the multicast code stream, and the multicast stream is not received smoothly.
  • the session description protocol message generating apparatus invokes, by using the session description protocol message format invoking module 41, a first field, which is used to record the first multicast source identifier, and a second, which is used to record the second multicast source identifier.
  • the session description protocol message format of the field and then the session description protocol message generation module 43 can generate the first multicast according to the first multicast source identifier and the at least one second multicast source identifier obtained by the multicast source identifier obtaining module 42.
  • the source identifier and the session description protocol message of the at least one second multicast source identifier may carry more multicasts than the session description protocol message carrying only one multicast source address in the related art. Source identification information, so that more multicast sources can be added to the multicast group to improve the smoothness of the channel receiving the multicast stream.
  • the session description protocol message format invoking module 41 invokes the session description protocol message format, and may be a preset session description protocol message format, where the preset session description protocol message format may include the first used to record the first multicast source identifier. a field, and a second field for recording the second multicast source identifier; that is, the preset session description protocol message format is configured with the first field and the second field to store the multicast source identification information.
  • the preset session description protocol message format may be: modifying the original session description protocol message format based on the related original session description protocol message format, where the original session description protocol message format may include a source for indicating the multicast source.
  • the o field of the address that is, the address information of the multicast source is stored in the o field, so that the channel determines the legal multicast source according to the address information of the multicast source in the o field.
  • the second field may be additionally set on the basis of the original session description protocol message. The second multicast source identifier.
  • a session description protocol message format including a first field for recording the first multicast source identifier and a second field for recording the second multicast source identifier may be preset, and when the legal multicast source setting is performed, according to The session description protocol message format generates a session description protocol message, and sets the legal multicast source.
  • the session description protocol message generating module 43 in this embodiment may be further configured to: write the first multicast source identifier into the first field, and write at least one second multicast source identifier into the second field to generate a session description.
  • the protocol message is generated by writing the first multicast source identifier to the first field and writing the first multicast source identifier and the at least one second multicast source identifier to the second field to generate a session description protocol message.
  • the protocol message generating module 43 generates a session description protocol message, which may be: when the session description protocol message is generated, the first multicast source identifier may be written into the first field, and the second multicast source identifier may be written into the second field; After the first multicast source identifier is written into the first field, the first multicast source identifier and the at least one second multicast source identifier are written together into the second field. It is not limited.
  • the session description protocol message in this embodiment may include: an inbound session description protocol message and/or an outbound session description protocol message. That is, for an IPTV multicast system, the session description protocol message may refer to an inbound session description protocol message of a CDN central node in a full network multicast mode, or an inbound session description protocol of a CDN regional node in a full network multicast mode.
  • the inbound session description protocol message may also refer to an inbound session description protocol message of the central node on demand module in the non-network-wide multicast mode.
  • the outgoing session description protocol message may refer to an outgoing session description protocol message of a CDN central node in a full network multicast mode, or an outgoing session description protocol message of a central node channel module in a non-network-wide multicast mode.
  • the multicast source identifier includes address information of the multicast source.
  • the address information of the multicast source can be used as the identifier of the multicast source.
  • the legal multicast source can be set according to the address information of the multicast source.
  • the multicast source identifier may also be other information that can identify the multicast source.
  • the multicast source in this embodiment may include: an encoder or a streaming media server.
  • the session description protocol message in this embodiment is an inbound session description protocol message, and the inbound session description protocol message is an inbound session description protocol message of the central node in the network-wide multicast mode, or is a non-full network group.
  • the multicast source may be an encoder.
  • the session description protocol message is an outgoing session description protocol message
  • the outgoing session description protocol message is an outbound session description protocol message of the central node in the network-wide multicast mode, or the center in the non-network-wide multicast mode.
  • the multicast source may be a streaming media server.
  • the session description protocol message generating apparatus is configured to invoke a session description protocol message format, where the session description protocol message format includes a first field for recording a first multicast source identifier, and a second multicast source identifier for recording a second field; obtaining a first multicast source identifier and at least one second multicast source identifier; generating a session description protocol message according to the first multicast source identifier and the at least one second multicast source identifier; the session description protocol message is used Set the legal multicast source.
  • the generating includes the first multicast source identifier and the at least one second multicast source identifier
  • the session description protocol message may be determined according to the session description protocol message including the first multicast source identifier and the at least one second multicast source identifier, and the multicast corresponding to the first multicast source identifier and the at least one second multicast source identifier may be determined.
  • the source when the channel receives the multicast code stream, may receive the multicast stream of the multicast source corresponding to the first multicast source identifier and the at least one second multicast source identifier according to the multicast source identifier, that is, may receive different groups.
  • the multicast code stream sent by the broadcast source improves the smoothness of the channel receiving the multicast code stream compared to the manner in which only the multicast code stream of one multicast source can be received in the related art.
  • Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.
  • the computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
  • the embodiment of the present disclosure further provides a schematic structural diagram of an electronic device.
  • the electronic device includes:
  • At least one processor 50 which is exemplified by a processor 50 in FIG. 5; and a memory 51, may further include a communication interface 52 and a bus 53.
  • the processor 50, the communication interface 52, and the memory 51 can complete communication with each other through the bus 53.
  • Communication interface 52 can be used for information transmission.
  • Processor 50 can invoke logic instructions in memory 51 to perform the methods of the above-described embodiments.
  • logic instructions in the memory 51 described above may be implemented in the form of software functional units and sold or used as separate products, and may be stored in a computer readable storage medium.
  • the memory 51 is used as a computer readable storage medium for storing software programs, computer executable programs, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 50 executes the function application and the data portion by running software programs, instructions, and modules stored in the memory 51.
  • the network registration method in the foregoing method embodiment is implemented.
  • the memory 51 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to use of the terminal device, and the like. Further, the memory 51 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure.
  • the foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.
  • the modules or steps of the above embodiments of the present disclosure may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be used.
  • the program code executable by the computing device is implemented so that they can be stored in a computer storage medium (ROM/RAM, disk, optical disk) by a computing device, and in some cases, may be different from here.
  • the steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Therefore, the present disclosure is not limited to any specific combination of hardware and software.
  • the method and device for generating a session description protocol message provided by the embodiment of the present application improves the fluency of the channel receiving the multicast code stream.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Selon certains modes de réalisation, la présente invention concerne un procédé et un appareil pour générer un message de protocole de description de session, comprenant les étapes consistant à : appeler un format de message de protocole de description de session, le format de message de protocole de description de session comprenant un premier champ utilisé pour enregistrer un premier identifiant de source de multidiffusion et un second champ utilisé pour enregistrer un second identifiant de source de multidiffusion; acquérir un premier identifiant de source de multidiffusion et au moins un second identifiant de source de multidiffusion; et générer un message de protocole de description de session selon le premier identifiant de source de multidiffusion et le ou les seconds identifiants de source de multidiffusion, le message de protocole de description de session étant utilisé pour établir une source de multidiffusion valide. Par conséquent, un message de protocole de description de session qui comprend à la fois le premier identifiant de source de multidiffusion et le ou les seconds identifiants de source de multidiffusion peut être généré, puis les sources de multidiffusion correspondant au premier identifiant de source de multidiffusion et à la ou aux secondes sources de multidiffusion peuvent être déterminées au moyen du message de protocole de description de session et définies en tant que sources de multidiffusion valides, permettant ainsi à un canal, lors de la réception de flux de codes de multidiffusion, de recevoir des flux de codes de multidiffusion émis par différentes sources de multidiffusion, ce qui permet d'améliorer la fluidité du canal dans la réception de flux de codes de multidiffusion.
PCT/CN2017/100688 2016-10-08 2017-09-06 Procédé et appareil pour générer un message de protocole de description de session WO2018064925A1 (fr)

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CN101116306A (zh) * 2005-02-08 2008-01-30 艾利森电话股份有限公司 在分组交换网络上的按需多频道流会话
CN101193256A (zh) * 2006-11-23 2008-06-04 华为技术有限公司 利用统一的epg获取媒体内容的方法和装置
CN101370004A (zh) * 2007-08-16 2009-02-18 华为技术有限公司 一种组播会话安全策略的分发方法及组播装置
CN101453349A (zh) * 2007-12-03 2009-06-10 华为技术有限公司 一种处理实时流媒体协议的方法及系统
WO2009108176A1 (fr) * 2008-02-29 2009-09-03 Thomson Licensing Procédés et appareils pour fournir une répartition de signal à équilibrage de charge

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101116306A (zh) * 2005-02-08 2008-01-30 艾利森电话股份有限公司 在分组交换网络上的按需多频道流会话
CN101193256A (zh) * 2006-11-23 2008-06-04 华为技术有限公司 利用统一的epg获取媒体内容的方法和装置
CN101370004A (zh) * 2007-08-16 2009-02-18 华为技术有限公司 一种组播会话安全策略的分发方法及组播装置
CN101453349A (zh) * 2007-12-03 2009-06-10 华为技术有限公司 一种处理实时流媒体协议的方法及系统
WO2009108176A1 (fr) * 2008-02-29 2009-09-03 Thomson Licensing Procédés et appareils pour fournir une répartition de signal à équilibrage de charge

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