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WO2012089009A1 - Procédé, dispositif et système pour transférer un paquet voix via une pluralité de chemins - Google Patents

Procédé, dispositif et système pour transférer un paquet voix via une pluralité de chemins Download PDF

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Publication number
WO2012089009A1
WO2012089009A1 PCT/CN2011/083822 CN2011083822W WO2012089009A1 WO 2012089009 A1 WO2012089009 A1 WO 2012089009A1 CN 2011083822 W CN2011083822 W CN 2011083822W WO 2012089009 A1 WO2012089009 A1 WO 2012089009A1
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WO
WIPO (PCT)
Prior art keywords
path
peer device
negotiation
media stream
information
Prior art date
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Application number
PCT/CN2011/083822
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English (en)
Chinese (zh)
Inventor
孟斌
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2012089009A1 publication Critical patent/WO2012089009A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device, and system for transmitting voice messages in multiple paths. Background technique
  • the prior art fully utilizes the multi-path of the bearer network to ensure that the accessed voice service is guaranteed by QoS (Quality of Service), and when the voice is transmitted through the multipath, the signaling is first adopted.
  • the face exchange determines an RTP (Rea lt ime Transpor t Protocol) / RTCP (RTP Cont rol Protoco l, RTP Control Protocol) flow, and then negotiates another RTP/RTCP through the extension header of the RTP/RTCP flow.
  • Stream such a stream will evolve into two streams, that is, to achieve dual-issue selection.
  • the prior art has at least the following disadvantages: When transmitting voice packets by using multiple paths, if it is ensured that the accessed voice service is guaranteed by QoS, it is necessary to ensure that two independent paths are finally obtained.
  • the prior art cannot determine whether the obtained path is independent; and the dual-selection mode cannot satisfy all scenarios, and in an area where the bandwidth is not rich, it may only need to maintain one RTP stream if the originally established RTP path is If the fault occurs, it will affect the establishment of the new path. In severe cases, the establishment of the path will completely fail, and thus the QoS cannot be guaranteed. Summary of the invention
  • the embodiment of the present invention provides a method, device, and system for transmitting a voice message by using multiple paths.
  • the technical solution is as follows: On the one hand, a method for transmitting a voice message by using a multi-path is provided, the method includes: sending path negotiation information to a peer device, where the path negotiation information carries at least one address and an interface position. Information and media stream status request information;
  • the voice message is transmitted to the peer device by using one path or two paths.
  • a device for transmitting a voice message by using a multi-path includes:
  • a sending module configured to send path negotiation information to the peer device, where the path negotiation information carries at least one address, interface location information, and media stream state requirement information;
  • a receiving module configured to receive a negotiation result returned by the peer device, where the negotiation result includes a media stream state and a path address determined by the peer device according to the path negotiation information, where the media stream state is a single One of streaming, single-stream backup, and dual-issue selection;
  • a transmitting module configured to select, according to the negotiation result received by the receiving module, to transmit a voice message to the peer device by using one path or two paths.
  • Another device for transmitting a voice message by using a multi-path comprising:
  • a receiving module configured to receive path negotiation information sent by the peer device, where the path negotiation information carries at least one address, interface location information, and media stream state requirement information;
  • a determining module configured to determine a media stream state and a path address according to the path negotiation information received by the receiving module, where the media stream state is one of a single stream, a single stream backup, and a dual-issue selection; And the path of the media stream determined by the determining module and the path address thereof are returned to the peer device as a negotiation result;
  • a transmitting module configured to transmit a voice message to the peer device by using one path or two paths selected by the peer device.
  • a system for multi-path transmission of voice messages comprising: a first device and a Two devices;
  • the first device is the device of the first type of multi-path transmission voice message
  • the second device is another device for transmitting voice messages in multiple paths as described above.
  • the peer device By sending path negotiation information to the peer device to perform path negotiation with the peer device and adding interface location information to the path negotiation information, the peer device can allocate addresses in the same domain or plane, thus ensuring that the new path is used differently.
  • the path ensures that the accessed voice service is guaranteed by QoS.
  • the peer device determines the media stream state according to the call situation, thereby satisfying the scenario requirement.
  • FIG. 1 is a flowchart of a method for transmitting a voice message by using a multi-path according to a first embodiment of the present invention
  • FIG. 2 is a flowchart of a method for transmitting a voice message by using a multi-path according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram of a device structure for transmitting a voice message by using a multi-path according to Embodiment 4 of the present invention
  • FIG. 5 is a schematic diagram of another multi-path transmission according to Embodiment 4 of the present invention; Schematic diagram of the structure of a voice message;
  • FIG. 6 is a schematic structural diagram of a device for transmitting a multi-path voice message according to Embodiment 5 of the present invention
  • FIG. 7 is a schematic diagram of a device structure for transmitting a multi-path voice message according to Embodiment 5 of the present invention
  • FIG. 8 is a schematic structural diagram of a system for transmitting a multi-path voice message according to Embodiment 6 of the present invention. detailed description
  • Embodiment 1 provides a method for transmitting voice packets by using multiple paths. Referring to FIG. 1, the process is specifically as follows:
  • path negotiation information to the peer device, where the path negotiation information carries at least one address, interface location information, and media stream state requirement information.
  • the negotiation result includes a media stream state and a path address determined by the peer device according to the path negotiation information, where the media stream state is a single stream, a single stream backup, and a dual-issue selection.
  • the voice message is transmitted to the peer device through one path or two paths.
  • the sending the path negotiation information to the peer device includes:
  • the path negotiation information is carried in the extended signaling parameter and sent to the peer device, or the path negotiation information is carried in the voice message and sent to the peer device.
  • the voice message is transmitted to the peer device through one path or two paths, including:
  • the path is selected in the two paths according to the negotiation result, and the voice message is transmitted to the peer device through the selected path.
  • the unused path is closed.
  • the voice message is selected to be transmitted to the peer device by using one path or two paths according to the negotiation result, and specifically includes:
  • the backup path is determined according to the result of the negotiation, and the voice packet is transmitted to the peer device through the non-backup path.
  • the voice packet is transmitted to the peer device through the backup path.
  • the voice message is transmitted to the peer device through one path or two paths, including:
  • the two paths are selected according to the negotiation result.
  • the path and the peer device transmit voice packets.
  • the method provided in this embodiment by sending the path negotiation information to the peer device to perform path negotiation with the peer device, and adding the interface location information to the path negotiation information, so that the peer device can allocate the address in the same domain or plane. Therefore, it is ensured that the new path uses different paths, and the QoS guarantee is ensured for the accessed voice service.
  • the peer device determines the media stream state according to the call situation, thereby satisfying The scenario needs, and the resource saving effect can be achieved by recovering the original path resource after the original path is closed.
  • the embodiment provides a method for transmitting a voice message by using a multi-path device.
  • the method sends the path negotiation information including the interface location information and the media stream state requirement information to the peer device by the one-end device to implement the voice message of the device at both ends.
  • the transmission path is negotiated, so that the devices at both ends can ensure that the accessed voice service is QoS guaranteed and meets the scenario requirements.
  • the device that initiates the path negotiation and the device that receives the negotiation request may be an MGW, or may be a terminal, a base station, a base station controller, etc., which is not specifically limited in this embodiment.
  • the device that initiates the path negotiation is the first device, and the peer device is the second device, and the media stream state determined by the second device is a single stream, and one path for transmitting the voice packet is the original path.
  • the other path is a new path as an example, and the method provided in this embodiment is described in detail. Referring to FIG. 2, the process of the method provided in this embodiment is specifically as follows:
  • the first device sends path negotiation information to the second device, where the path negotiation information carries at least one address, interface location information, and media stream state requirement information.
  • the method does not limit the manner in which the first device sends the path negotiation information to the second device.
  • the path negotiation information may be carried in the extended signaling parameter and sent to the peer device, or The path negotiation information is carried in the voice message and sent to the peer device.
  • the path negotiation information carries at least the backup address, the interface location information, and the media stream state requirement information, and the interface location information may be domain or plane information, and the media stream state request information is used.
  • the specific content of the interface location information and the media stream state requirement information is not limited in this embodiment.
  • the extended signaling parameters may be as follows Rr :
  • A mpr tp ⁇ network type> ⁇ addres s type> connect ion addres s> ⁇ IP Doma in/P lane>
  • A mpr tps ta te ⁇ Onepa th
  • the mpr tp is used to carry the IP address
  • the network type indicates the network type
  • the connect ion addres s indicates the link address
  • Mpr tps tate indicates the status of the media stream. Onepath indicates that the media stream status is single stream, Twopath indicates that the media stream status is dual-transmit, and backup indicates that the media stream status is single-stream backup.
  • the voice message may be an RTP message, and a type for describing the state of the media stream may be added to the voice message, for example, adding 0x3 to the MPR_Type.
  • Type, and the capability of the first device and the capability of the second device are described by the type, such as: the ability of the first device is represented by Send, and the capability of the second device is represented by Receive.
  • the second device determines the media stream state and the path address according to the path negotiation information, and returns the determined media stream state and the path address thereof to the first device, where the determined media stream state is a single stream;
  • the second device sends the path negotiation information to the second device, and after receiving the path negotiation information, the second device determines the final media stream state according to the capability of the second device.
  • the path address will be determined based on the path negotiation information.
  • the second device may determine the media stream state according to the media stream state requirement information in the path negotiation information, and determine the path address according to the interface location information in the path negotiation information.
  • the media stream state may be determined as a single stream.
  • the second device since the path address is determined according to the interface location information in the path negotiation information, and the interface location information may be domain or plane information, the second device may be in the same domain or plane.
  • the IP address is selected as the path address, that is, the corresponding IP resource is allocated, and the path address matches the address carried in the path negotiation information, so that the voice message can be transmitted on a completely different path, thereby ensuring QoS.
  • the same manner as the first device sends the path negotiation information, and the extended signaling parameter may be adopted. If the voice message is an RTP message, the negotiation result is returned to the first device through the RTCP message, and the message is returned to the first device.
  • the return mode is not limited in this embodiment.
  • the first device receives the negotiation result returned by the second device, selects the original path in the original path and the new path according to the negotiation result, and transmits the voice message through the original path and the second device.
  • the status of the media stream in the negotiation result is a single stream. Therefore, when the first device selects a path for transmitting a voice message with the second device in the original path and the new path according to the negotiation result, the original path may be selected. A new path may be selected, which is not specifically limited in this embodiment. This step is only described by taking the source path of the first device as an example.
  • the first device selects a new path in the original path and the new path according to the negotiation result, and sends a voice message to the second device by using the new path.
  • the status of the media stream in the negotiation result is a single stream. Therefore, when the first device selects a path for transmitting the voice message with the second device in the original path and the new path according to the negotiation result, the path is selected through the original path and the second path. After the device sends a voice packet, it can also choose to send a voice packet to the second device through the new path.
  • the second device After receiving the voice message sent by the first device by using the new path, the second device turns off the original path, and sends a voice message to the first device by using the new path.
  • the media stream state determined by the second device in the foregoing step 202 is a single stream
  • the second device after the second device receives the voice message sent by the first device through the new path, it means that the original path becomes unused. Path, in order to guarantee a single stream, the second device will close the original path.
  • the second device can also recover the address resources of the original path, thereby saving resources.
  • the first device After receiving the voice message sent by the second device by using the new path, the first device turns off the original path, and transmits the voice message to the second device by using the new path.
  • step 205 since the media stream state determined by the second device in the foregoing step 202 is a single stream, after the first device receives the voice message sent by the second device through the new path, it means that the original path becomes The path is not used. To ensure a single stream, the first device also closes the original path.
  • the method provided in this embodiment is to send the path negotiation information to the second device by using the first device, perform path negotiation with the first device, and add the interface location information to the path negotiation information, so that the second device can be in the same domain or plane. Assigning an address in the middle ensures that the new path uses a different path, ensuring that the accessed voice service is guaranteed by QoS.
  • the second device determines the media stream according to the call situation. The status, which in turn satisfies the needs of the scene.
  • the embodiment provides a method for transmitting a voice message by using a multi-path device.
  • the method sends the path negotiation information including the interface location information and the media stream state requirement information to the peer device by the one-end device to implement the voice message of the device at both ends.
  • the transmission path is negotiated, so that the devices at both ends can ensure that the accessed voice service is QoS guaranteed and meets the scenario requirements.
  • the device that initiates the path negotiation is the first device, and the peer end is the second device, and the media stream state determined by the second device is a single stream backup, and one path of the voice packet is transmitted.
  • the other path is a new path, and the new path is determined as a backup path in the original path and the new path.
  • the method provided in this embodiment is described in detail. Referring to FIG. 3, the method of the method provided in this embodiment is specifically as follows:
  • the first device sends path negotiation information to the second device, where the path negotiation information carries at least one address, interface location information, and media stream state requirement information.
  • the step is the same as the step 201 in the foregoing embodiment 2.
  • the step 201 in the foregoing embodiment 2 For details, refer to the step 201 in the foregoing embodiment 2, and details are not described herein again.
  • the second device determines the media stream state and the path address according to the path negotiation information, and returns the determined media stream state and the path address to the first device as a negotiation result, where the determined media stream state is a single stream backup;
  • the second device sends the path negotiation information to the second device, and the second device receives the path negotiation information according to the second device.
  • the ability to determine the final media stream state in addition, will also determine the path address based on the path negotiation information.
  • the second device may determine the media stream state according to the media stream state requirement information in the path negotiation information, and determine the path address according to the interface location information in the path negotiation information.
  • the port location information may be domain or plane information.
  • the second device may select an IP address as the path address in the same domain or plane, that is, allocate the corresponding IP resource, and the path address and the address carried in the path negotiation information are Matching, thus ensuring that voice messages are transmitted on completely different paths, thereby ensuring QoS.
  • the manner in which the first device sends the path negotiation information may be returned to the first device by using the extended signaling parameter.
  • the voice control packet can be returned to the first device by using a voice control packet. If the voice packet is an RTP packet, the negotiation result can be returned to the first device through the RTCP packet, and the specific return mode is adopted.
  • the example is not limited.
  • the second device determines the media stream state as a single stream backup according to the media stream state requirement information in the path negotiation information, the second device needs to be in the original path and the new path. Determine any path as a backup path.
  • a new path is taken as a backup path as an example.
  • the first device receives the negotiation result returned by the second device, determines that the new path is the backup path, and transmits the voice message to the second device by using the original path.
  • the status of the media stream in the negotiation result returned by the second device is a single-stream backup.
  • the first device determines that the new path is the backup path according to the negotiation result, and passes the The original path and the second device transmit voice messages.
  • the first device does not receive the voice message sent by the second device by using the original path, and sends a voice message to the second device by using the new path.
  • the first device may determine that the original path is faulty. To ensure the normal transmission of the voice message, the first device enables the backup. The path, that is, the voice message is sent to the second device through the new path.
  • the specific preset time is not limited.
  • the first device and the second device may be pre-negotiated. For example, after 20 milliseconds, the first device still does not receive the second device and sends the original device through the original path. A voice packet can send a voice packet to the second device through the new path.
  • the backup device may enable the backup path if the first device determines that the packet is lost.
  • the backup path can be enabled, and if the second device is at the preset time If the voice packet sent by the first device is not received or the packet is lost, the backup path can be enabled, that is, the voice packet is sent to the second device through the new path.
  • the backup path can be used to send the voice packet to the peer device.
  • the second device After receiving the voice message sent by the first device by using the new path, the second device sends a voice message to the first device by using the new path.
  • the media stream state determined by the second device in the foregoing step 302 is a single stream backup, that is, one voice path is transmitted by using one path of the original path and the new path, and the other path is used as the backup path, then the second path is used.
  • the second device After the device receives the voice message sent by the first device through the new path, the second device also sends a voice message to the first device through the new path.
  • the second device when the second device receives the voice message sent by the first device through the new path, and then sends the voice message to the first device through the new path, the second device may also close the original path and collect the voice packet. The address resource of the original path. Similarly, after receiving the voice message sent by the second device through the new path, the first device may also close the original path and recover the address resource of the original path.
  • the method provided in this embodiment is to send the path negotiation information to the second device by using the first device, perform path negotiation with the first device, and add the interface location information to the path negotiation information, so that the second device can be in the same domain or plane. Assigning an address in the middle ensures that the new path uses a different path, ensuring that the accessed voice service is guaranteed by QoS.
  • the second device determines the media stream according to the call situation. The status, which in turn satisfies the needs of the scene.
  • the device provides a device for transmitting voice packets in a multi-path manner.
  • the device includes: a sending module 401, configured to send path negotiation information to the peer device, where the path negotiation information carries at least one address, Interface location information and media stream status requirement information;
  • the receiving module 402 is configured to receive a negotiation result returned by the peer device, where the negotiation result includes a media stream state determined by the peer device according to the path negotiation information, and a path address, where the media stream state is a single stream, a single stream backup, and a dual One of the elections;
  • the transmitting module 403 is configured to select, according to the negotiation result received by the receiving module 402, to transmit a voice message to the peer device by using one path or two paths.
  • the sending module 401 is specifically configured to carry the path negotiation information in the extended signaling parameter and send the information to the peer device, or the path negotiation information is carried in the voice message and sent to the peer device.
  • the transmitting module 403 is specifically configured to: when the status of the media stream in the negotiation result is a single stream, select one path in the two paths according to the negotiation result, and transmit the voice packet to the peer device by using the selected path; After you have determined the path you are using, close the unused path.
  • the device further includes:
  • the recycling module 404 is configured to reclaim the address resource of the unused path after the transfer module 403 closes the unused path.
  • the transmitting module 403 is specifically configured to: when the media stream state in the negotiation result is a single stream backup, and indicate that any one of the two paths is a backup path, determine the backup path according to the negotiation result, and pass the non-backup path. And transmitting the voice packet to the peer device. If the voice packet is not received or the packet is received or received by the peer device through the backup path, the voice is transmitted to the peer device through the backup path. Message.
  • the transmitting module 403 is specifically configured to: when the media stream state in the negotiation result is dual-selected, select, according to the negotiation result, the voice message is transmitted to the peer device through the two paths.
  • the device provided in this embodiment may be an MGW, or may be a terminal, a base station, a base station controller, etc., which is not specifically limited in this embodiment.
  • the device by sending the path negotiation information to the peer device, performs path negotiation with the peer device, and adds the interface location information to the path negotiation information, so that the peer device can allocate the address in the same domain or plane. Therefore, the new path is used to ensure the QoS guarantee of the accessed voice service.
  • the peer device determines the final state of the media stream according to the call situation. In addition, the scenario requirements are met, and the resource saving effect can be achieved by recovering the original path resource after the original path is closed.
  • the device includes: a receiving module 601, configured to receive path negotiation information sent by a peer device, where the path negotiation information carries at least one address. , interface location information and media stream status requirement information;
  • the determining module 602 is configured to determine the media stream according to the path negotiation information received by the receiving module 601. a status and a path address, the media stream status is one of a single stream, a single stream backup, and a dual-issue selection; the returning module 603 is configured to return the media stream status determined by the determining module 602 and the path address thereof as a negotiation result. To the peer device;
  • the transmitting module 604 is configured to send a voice message to the peer device by using one path or two paths selected by the peer device.
  • the receiving module 601 is configured to receive the extended signaling parameter that is sent by the peer device and that carries the path negotiation information, or the voice message that carries the path negotiation information that is sent by the peer device.
  • the determining module 602 is specifically configured to determine, according to the path negotiation information, that the media stream state is a single stream.
  • the returning module 603 is specifically configured to return, by using the media stream state determined by the determining module 602 as a single stream, and the path address thereof as a negotiation result. To the peer device;
  • the transmitting module 604 is specifically configured to transmit a voice message to the peer device by using the path selected by the peer device. After the devices at both ends determine the used path, the unused path is closed.
  • the device further includes:
  • the recycling module 605 is configured to reclaim the address resource of the unused path after the transfer module 604 closes the unused path.
  • the determining module 602 is specifically configured to determine, according to the path negotiation information, that the media stream state is a single stream backup, and determine any one of the two paths as a backup path;
  • the returning module 603 is specifically configured to return the media stream state determined by the determining module 602 for the single-stream backup and the path address thereof to the peer device as a negotiation result;
  • the transmitting module 604 is specifically configured to: send a voice message to the peer device through the non-backup path; if the voice message is not received in the preset time, or the packet is received or received, the voice message sent by the peer device through the backup path is received. , the voice message is transmitted to the peer device through the backup path.
  • the determining module 602 is specifically configured to determine, according to the path negotiation information, that the media stream state is a dual-selection;
  • the returning module 603 is specifically configured to return, to the peer device, the media stream state determined by the determining module 602 for the dual-issue selection and the path address thereof as a negotiation result;
  • the transmitting module 604 is specifically configured to transmit a voice message to the peer device by using two paths.
  • the device provided in this embodiment may be an MGW, or may be a terminal, a base station, a base station controller, etc., which is not specifically limited in this embodiment.
  • the device provided in this embodiment performs path negotiation with the peer device through the path negotiation information sent by the peer device, and adds the interface location information according to the path negotiation information, so that the address can be allocated in the same domain or plane, thereby ensuring new The path uses different paths to ensure that the accessed voice service is obtained.
  • the media stream state requirement information added in the path negotiation information can determine the media stream state according to the call situation, thereby satisfying the scenario requirement, and the resource saving effect can be achieved by recovering the original path resource after the original path is closed.
  • This embodiment provides a system for transmitting voice packets by using multiple paths.
  • the system includes: a first device 801 and a second device 802;
  • the first device 801 is a device for transmitting a voice message by multipath according to the foregoing embodiment 4.
  • the second device 802 is a device for transmitting a voice message by using a multipath as provided in the foregoing fifth embodiment.
  • the system provided by the embodiment sends the path negotiation information to the second device to perform path negotiation with the second device, and adds the interface location information to the path negotiation information, so that the second device can be in the same domain or plane. Assigning addresses ensures that the new path uses different paths, ensuring that the accessed voice service is guaranteed by QoS.
  • the second device determines the media according to the call situation. The final state of the flow, which satisfies the requirements of the scenario, and the resource saving effect can be achieved by recovering the original path resource after the original path is closed.
  • the device for the multi-path transmission of the voice message is only illustrated by the division of the foregoing functional modules. In practical applications, the function may be performed according to requirements. The assignment is done by different functional modules, ie the internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
  • the device and the system for transmitting the voice message in the multi-path and the method for transmitting the voice message in the multi-path are provided in the same manner. For the specific implementation process, refer to the method embodiment, and details are not described herein.
  • All or part of the steps in the embodiment of the present invention may be implemented by software, and the corresponding software program may be stored in a readable storage medium such as an optical disk or a hard disk.

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Abstract

La présente invention se rapporte à un procédé, à un dispositif et à un système pour transférer un paquet voix via une pluralité de chemins. L'invention appartient au domaine technique des communications. Le procédé selon l'invention consiste : à envoyer des informations de négociation de chemin à un dispositif homologue, les informations de négociation de chemin comprenant au moins une adresse, des données de position d'interface et des données de demande d'état de flux multimédia ; à recevoir un résultat de négociation retourné par le dispositif homologue, le résultat de négociation comprenant un état de flux multimédia et une adresse de chemin de flux multimédia déterminés par le dispositif homologue sur la base des informations de négociation de chemin, et l'état de flux de données multimédias étant l'un d'une réception sélective d'un flux unique, d'une sauvegarde de flux unique et d'une transmission double ; et à sélectionner un ou deux chemins sur la base du résultat de la négociation en vue de transférer un paquet voix au dispositif homologue. Dans la présente invention, les informations de négociation de chemin sont envoyées au dispositif homologue en vue de négocier le chemin avec le dispositif homologue, et les données de position d'interface et les données de demande d'état de flux de données multimédias sont ajoutées aux informations de négociation de chemin. La solution technique de la présente invention permet d'être certain qu'un nouveau chemin est un chemin différent, de garantir une QoS d'un service voix accédé et de satisfaire aux exigences du scénario.
PCT/CN2011/083822 2010-12-31 2011-12-12 Procédé, dispositif et système pour transférer un paquet voix via une pluralité de chemins Ceased WO2012089009A1 (fr)

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