EP4595411A1 - Procédés et dispositifs de configuration d'un module dns et de résolution d'adresse pour gérer la diffusion de flux de contenus multimédias dans un réseau de télécommunications - Google Patents
Procédés et dispositifs de configuration d'un module dns et de résolution d'adresse pour gérer la diffusion de flux de contenus multimédias dans un réseau de télécommunicationsInfo
- Publication number
- EP4595411A1 EP4595411A1 EP23782181.4A EP23782181A EP4595411A1 EP 4595411 A1 EP4595411 A1 EP 4595411A1 EP 23782181 A EP23782181 A EP 23782181A EP 4595411 A1 EP4595411 A1 EP 4595411A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- multicast
- net
- gateway
- request
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
Definitions
- the present invention is in the field of managing the distribution of multimedia content streams in a telecommunications network. It applies in particular to the broadcasting of audiovisual content from an OTT (Over the Top or over-the-top in French) service.
- OTT Over the Top or over-the-top in French
- This content is offered using a simple Internet connection and delivered in unicast streaming to a receiver (OTT decoder) via the Web.
- a transmitter equipment In a unicast broadcast mode, a transmitter equipment (streaming server) generally belonging to a CDN (Content Delivery Network) transmits a stream per client/receiver equipment (OTT decoder) having requested the content (client/server mode). Consequently, if several clients access the same content simultaneously, for example live (direct) from a TV channel, several identical streams circulate in the network.
- This method has the disadvantage of occupying significant network bandwidth in the event of significant simultaneous requests for a linear (direct) service.
- This unicast transmission is generally carried out with content prepared in ABR (Adaptive Bit Rate) or adaptive bit rate in which the source content is encoded according to several bit rates, each segmented into small parts of several seconds, typically between two and ten seconds, the segments of the available streams and their respective bit rates being entered in a file downloadable by clients (OTT decoders).
- ABR Adaptive Bit Rate
- OTT decoders clients
- Each client implements an adaptive bitrate algorithm to decide which bitrate segments to download, based on the current network state.
- Linear stream broadcasting used point-to-multipoint transmission methods such as Broadcast (cable, satellite, etc.) or Multicast (IPTV, etc.), these methods consisting of transmitting a single stream to a plurality of of receptors. These methods save bandwidth since in the network, a single flow circulates for all receivers. On the other hand, these methods required the use of receivers dedicated to the transmission mode (Satellite receiver, IPTV decoder, etc.) and to the characteristics of the transmission network (TV channel association and broadcast frequency or multicast address, etc.), which does not is not compatible with OTT decoders.
- the invention aims in particular at a mechanism for directing requests for access to content sent by the client (OTT decoder).
- OTT decoder the device in charge of such a switching device is called a service appointment. It allows you to redirect a content access request either to a CDN unicast server (classic mode) or to a “multicast gateway”.
- the multicast gateway receives content via multicast transport (see broadcast) and delivers it to the client in unicast.
- Figure 1 represents a first method for managing the distribution of unicast multimedia streams to an OTT receiver, this method being consistent with the state of the art.
- An OTT receiver device (in English OTT end device) comprises a CP_APP application of a content provider (in English Content Provider Application), a multimedia stream decoder and a DNS module (in English Domain Name Server) referenced DNSJDTT.
- a content provider in English Content Provider Application
- a multimedia stream decoder in English Domain Name Server
- This OTT receiver device is connected by a local LAN network to a HGW home gateway (Home Gateway in English).
- This HGW domestic gateway includes a DNS module, referenced DNS_HGW.
- the HGW home gateway is connected to a NET telecommunications network including a DNS_NET DNS server.
- a content server in English Content Provider server or CP server
- CP_SRV of a content delivery network in English Content Delivery Network
- NET Network
- CP.net the domain name (FQDN, in English Fully Qualified Domain Name)
- IP_CDN the IP address of the CP_SRV content server.
- domain names are in fact fully qualified domain names; we use the expression domain name for the sake of simplification.
- the OTT device When the user of the OTT receiving device wishes to access the content delivered by the content server CP_SRV, the OTT device sends (step 1E10) a “RESOLVE CP.net” request to resolve the FQDN domain name of this server.
- This query is received by the DNS module DNSJDTT of the OTT receiving device and if this module cannot resolve the query (i.e. if it has never processed a similar query or if the response it holds has become obsolete), it forwards the request to the next DNS module for resolution, or to DNS_HGW of the HGW home gateway. On this same principle, if this DNS_HGW module cannot resolve the request, it transmits it to the next DNS server, that is to say in this example to the network's DNS_NET DNS server.
- the DNS server DNS_NET of the network returns (step 1E20) the IP address @IP_CDN for broadcasting content CP to the DNS module which queried it, that is to say to the DNS module DNS_HGW, and this is repeated up to the device OTT receiver.
- the OTT receiver device sends (step 1E30) a “GET CP.net/content” request to the IP address @IP_CDN to obtain (step 1E40) the content of the CP_SRV content server in unicast mode.
- Figure 2 represents a second method for managing the distribution of multimedia streams in accordance with the state of the art and illustrates in particular three additional functional modules making it possible to deliver to the OTT receiver device ABR M-ABR multicast content (for example in accordance with the DVB reference architecture ETSI TS 103 769 VI.1.1).
- a “Multicast server” (MC_SRV) module retrieves from the content distribution server CP_SRV, the contents (step 2E70) to be transmitted and broadcasts them in point-multipoint mode (step 2E80).
- the broadcast mode is multicast.
- a “Rendez Vous Service” (RDV) module has knowledge of the content broadcast in M-ABR.
- the CP_APP application of the PTT receiver device addresses the RDV module to obtain content from the CP_SRV content server (step 2E90).
- the RDV service appointment module responds to the CP_APP application (steps 2E101 and 2E102) to directly fetch the desired content in unicast on the Multicast Gateway (steps 2E112 and 2E122 ) or on the CP_SRV server (steps 2E111 and 2E121).
- a multicast broadcast gateway (MC_GW module) has the role of retrieving the requested content (step 2E112) broadcast in multicast (in the case of M-ABR).
- the multicast broadcast gateway MC_GW subscribes to the corresponding multicast stream (step 2E80) and transmits it to the application CP_APP in step 2E122.
- Figure 3 represents a method for managing the distribution of multimedia streams in M-ABR mode conforming to the state of the art in which:
- the MC_SRV multicast server and the RDV service appointment module are located in the operator's NET network;
- the multicast server MC_SRV uses point multipoint broadcast resources (step 3E02) made available by the network operator (in the context of M-ABR, these resources are multicast IP addresses) and retrieves the contents at broadcast in M-ABR (step 3E01) at the CP_SRV content server.
- the RDV service appointment module must also have knowledge of the content broadcast in M-ABR and the multicast broadcast gateway MC_GW knows the association between the content(s) broadcast in M-ABR and the point multipoint broadcast resource(s) used carried out at the level of the MC_SRV multicast server.
- the network operator when activating the RDV module in the network, the network operator declares two new rules (step 3E03) in the network DNS (DNS_NET):
- the first rule redefines the resolution of the main FQDN “CP.net” either by the IP address @IP_RDV of the RDV module (replacing the IP address of the content delivery server CP_SRV ).
- the main FQDN “CP.net” can be resolved by a new FQDN “RDV.net” which is resolved by the IP address of the RDV module;
- the multicast broadcast gateway MC_GW registers in a database at the RDV service appointment module. So when a device requests the RDV service appointment module via this HGW domestic gateway, the RDV service appointment module knows if a multicast broadcast gateway MC_GW is present for this device.
- the appointment service appointment module performs a referral function.
- the response to the content request is a request for redirection of the request to the FQDN “MC_GW.Ian” (step 3E42) if on the one hand the multicast broadcast gateway MC_GW has been registered on the rendezvous module RDV service and if on the other hand, the content is broadcast in M-ABR mode.
- This response once resolved (steps 3E52 and 3E62) allows the OTT receiver device to obtain the content of the multicast broadcast gateway MC_GW (steps 3E72, 3E82 and 3E92).
- the response to the content request (3E30) is a redirection request to the secondary FQDN “CPBIS.net” which once resolved (steps 3E51 and 3E61) will make it possible to obtain the content from the CP_SRV content server (steps 3E71 and 3E81 ).
- this broadcast method has a major drawback in that it requires declaring (in step 3E04) the multicast broadcast gateway MC_GW to the RDV service appointment module. Indeed, assuming that this recording is not carried out, and therefore that the service module systematically returns, in step 3E42, as soon as the requested content is accessible by multicast, a redirection instruction to a name of domain associated with a multicast broadcast gateway, even in the absence of such an MC-GW gateway, then step 3E52 of resolving this domain name would result in a service interruption, typically an HTTP 404 code error.
- a known solution consists of managing such a response at the level of the CP_APP application of the OTT decoder to redirect the request to the server for this CP_SRV content for unicast reception.
- the invention aims at a diffusion method which does not have these drawbacks.
- the invention relates to a method of configuring a DNS module implemented by a domestic gateway configured to interconnect a local network with an operator network, said configuration comprising at least:
- the invention relates to a device for configuring a DNS module included in a domestic gateway configured to interconnect a local network with an operator network, said configuration comprising at least:
- the method of configuring a DNS module according to the invention is remarkable in that it makes it possible to intelligently direct the unicast or multicast stream to the OTT receiver depending on the broadcast mode of this stream, without requiring recording. prior or declaration of the multicast broadcast gateway to the service appointment module, nor modification of the software of the OTT receivers.
- the invention also relates to an address resolution device configured by the configuration method mentioned above and an address resolution method implemented by such a device.
- the invention relates to an address resolution method implemented by an entity constituted by a domestic gateway configured to interconnect a local network with an operator network, this method comprising:
- a routing module located in the operator's network said routing module being configured to, upon receipt of a request access to content,:
- the invention relates to an address resolution device intended to be integrated into a domestic gateway configured to interconnect a local network with an operator network, this device comprising:
- the invention also relates to a domestic gateway configured to interconnect a local network with an operator network, this gateway being characterized in that it comprises a configuration device as mentioned above.
- the invention also relates to a multicast gateway integrated into a home gateway as mentioned above and configured to respond to a request for access to content by sending this content in unicast, this content being received by said gateway multicast in multicast from a multicast broadcast server of this content, said multicast gateway comprising a configuration device as mentioned above.
- the configuration method is implemented upon detection of the presence of the multicast gateway.
- the home gateway detects the presence of the broadcast gateway, it configures its DNS with the two rules (i) and (ii) mentioned above.
- the configuration method is implemented by the multicast gateway, preferably as soon as it starts.
- it is the multicast gateway which itself configures the DNS of the home gateway with the two rules (i) and (ii) mentioned above.
- the different stages of the configuration method and/or the address resolution method are determined by computer program instructions or are implemented by a silicon chip which comprises transistors adapted to constitute logic gates of non-programmable hardwired logic.
- the invention also relates to a computer program on an information medium, this program being capable of being implemented in a controller computer, this program comprising instructions adapted to the implementation of the steps of an address configuration and/or resolution method as described above.
- This program may use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other desirable shape.
- the invention also relates to an information medium readable by a computer, and comprising instructions for a computer program as mentioned above.
- the information carrier can be any entity or device capable of storing the program.
- the medium may include a storage means, such as a ROM, a non-volatile memory of the flash type or even a magnetic recording means, for example a hard disk.
- the information carrier may be a transmissible medium such as an electrical or optical signal, which may be carried via an electrical or optical cable, by radio or by other means.
- the program according to the invention can in particular be downloaded onto an Internet type network.
- the information carrier may be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in executing the method in question. Brief description of the designs:
- FIG. 4 represents a configuration method and an address resolution method conforming to a particular embodiment of the invention
- FIG. 5 represents a configuration device conforming to a particular embodiment of the invention
- FIG. 7 represents a domestic gateway, and a multicast gateway conforming to a particular embodiment of the invention.
- Figure 4 represents a method of configuring a DNS module and an address resolution method conforming to a particular embodiment of the invention.
- the configuration method and the address resolution method is implemented by an HGW domestic gateway providing the interconnection between a local network LAN and a NET operator network.
- the HGW home gateway includes a DNS_HGW DNS module and a MC_GW multicast multicast gateway.
- CP_SRV content server of a CDN content distribution network is connected to the NET network.
- CP.net the FQDN domain name
- IP_CDN the IP address of the CP_SRV content server.
- an OTT receiver device comprising a CP_APP application from a content provider, a decoder not shown and a DNS module DNSJDTT.
- a multicast server MC_SRV of the operator's network NET uses point multipoint broadcast resources (step 4E02) and retrieves the content to be broadcast in M-ABR mode (step 4E01) at the content server CP_SRV.
- An appointment switching module providing a service appointment function is installed in the operator's NET network.
- a CTR controller of the home gateway HGW detects the presence of the multicast gateway MC_GW.
- CP.net from the CP_SRV content server by the IP address @IP_RDV of an RDV switching module located in the operator's network.
- the OTT receiver device sends a RESOLVE CP.net request to resolve the main domain name of the content server CP_SRV.
- This request is received by the DNS module DNSJDTT of the OTT receiving device and transferred to the DNS module DNSJHGW of the home gateway.
- the DNS module DNS_HGW of the home gateway responds (step 4E20) to the OTT receiver device that the IP address of the content server CP_SRV is the IP address @IP_RDV of the RDV routing module.
- the OTT receiver device sends (step 4E30) a request for access to GET CP.net/content content to the IP address @IP_RDV of the RDV routing module.
- the RDV routing module determines whether the URL associated with the content is, in a configuration file, associated with an ABR multicast broadcast mode.
- the RDV routing module sends (step 4E42) to the OTT receiver device a REDIRECT MC_GW.Ian/content redirection request so that the latter sends its content access request to the gateway multicast MC_GW.
- the OTT receiver device sends a “RESOLVE MC_GW.Ian” request to resolve the domain name FQDN of the multicast gateway MC_GW.
- This request is received by the DNS module DNSJDTT of the OTT receiving device and transferred to the DNS module DNS_HGW of the home gateway HGW.
- the home gateway HGW returns (step 4E62) to the OTT receiver device the IP address @IP_MC_GW of the multicast gateway MC_GW. This is also the IP address of the HGW Home Gateway.
- the OTT receiver device sends (step 4E72) the “GET MC_GW.Ian/content” content access request to the IP address of the MC_GW multicast gateway.
- This multicast gateway MC_GW ensures the conversion, into unicast for restitution by the OTT receiver device, of the stream received in multicast coming from the multicast broadcast server MC_SRV.
- the multicast gateway MC_GW sends (step 4E92) in unicast to the decoder DEC, the content received (4E82) in multicast from the multicast broadcast server MC_SRV.
- the RDV referral module determines that the URL associated with the content is not associated with an ABR multicast broadcast mode, the RDV referral module sends (step 4E41) to the device OTT receiver a REDIRECT CPBIS.net/content redirection request to the secondary FQDN of the CP_SRV content server.
- the OTT receiver device sends a “RESOLVE CPBIS.net” request to resolve the secondary FQDN domain name of the unicast content server CP_SRV.
- This request is received by the DNS module DNSJDTT of the OTT receiving device and transferred to the DNS module DNSJHGW of the home gateway HGW, which transfers it to the DNS module DNS_NET of the operator.
- the operator's DNS_NET module returns (step 4E61) to the OTT receiver device the IP address @IP_CDN of the unicast content server CP_SRV.
- the OTT receiver device sends (step 4E71) the “GET CPBIS.net/content” content access request to the IP address IP_CDN of the unicast content server CP_SRV.
- the unicast content server CP_SRV sends the content to the OTT receiver device during a step 4E81.
- Figure 5 represents a DC device for configuring a module according to the invention. This device is intended to be integrated into an HGW home gateway between a local network and a NET operator network, the HGW home gateway comprising a MC_GW multicast gateway.
- the DC configuration device has the hardware architecture of a computer II comprises a processor 10, a ROM type read only memory 11, a RAM 12, a rewritable non-volatile memory 14 and means communication 15.
- the ROM type read only memory 11 constitutes a recording medium within the meaning of the invention. It comprises a PGC computer program comprising instructions for executing the steps of a configuration method according to the invention when this program is executed by the processor 10.
- the communication means 15 are configured to configure a DNS module DNS_HGW with configuration rules comprising at least:
- Figure 6 represents a DR address resolution device according to the invention. This device is intended to be integrated into a HGW home gateway between a local network and a NET operator network.
- the address resolution device DR has the hardware architecture of a computer II comprises a processor 20, a ROM type read only memory 21, a RAM 22, a rewritable non-volatile memory 24 and means of communication 25.
- the ROM type read only memory 21 constitutes a recording medium within the meaning of the invention. It comprises a computer program PGR comprising instructions for executing the steps of an address resolution method according to the invention when this program is executed by the processor 20.
- the communication means 25 are in particular configured to receive a request for resolution of a domain name from a content server and send, in response to this resolution request, a response comprising the IP address of a module.
- RDV switching located in the operator's network, this RDV switching module being configured for, upon receipt of a request for access to content:
- Figure 7 represents a home gateway HGW and a multicast gateway MC_GW conforming to the invention.
- the HGW domestic gateway comprises a DNS-HGW DNS module, a DC configuration device and an address resolution DR device in accordance with the invention.
- the DC configuration device is integrated into the MC_GW multicast gateway.
- the multicast gateway then conforms to the invention.
- the DC device for configuring the home gateway HGW is not integrated into the multicast gateway MC_GW.
- the address resolution device DR is integrated into the DNS module DNSJHGW.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2209817A FR3140233A1 (fr) | 2022-09-28 | 2022-09-28 | Procédés et dispositifs de configuration d’un module DNS et de résolution d’adresse pour gérer la diffusion de flux de contenus multimédias dans un réseau de télécommunications |
| PCT/EP2023/076536 WO2024068627A1 (fr) | 2022-09-28 | 2023-09-26 | Procédés et dispositifs de configuration d'un module dns et de résolution d'adresse pour gérer la diffusion de flux de contenus multimédias dans un réseau de télécommunications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4595411A1 true EP4595411A1 (fr) | 2025-08-06 |
Family
ID=84887902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23782181.4A Pending EP4595411A1 (fr) | 2022-09-28 | 2023-09-26 | Procédés et dispositifs de configuration d'un module dns et de résolution d'adresse pour gérer la diffusion de flux de contenus multimédias dans un réseau de télécommunications |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20260129018A1 (fr) |
| EP (1) | EP4595411A1 (fr) |
| FR (1) | FR3140233A1 (fr) |
| WO (1) | WO2024068627A1 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9743151B2 (en) * | 2015-06-24 | 2017-08-22 | Time Warner Cable Enterprises Llc | Multicast video program switching architecture |
| US12003788B2 (en) * | 2018-11-28 | 2024-06-04 | Broadpeak | Method and system for audio-visual live content delivery |
-
2022
- 2022-09-28 FR FR2209817A patent/FR3140233A1/fr active Pending
-
2023
- 2023-09-26 US US19/116,278 patent/US20260129018A1/en active Pending
- 2023-09-26 WO PCT/EP2023/076536 patent/WO2024068627A1/fr not_active Ceased
- 2023-09-26 EP EP23782181.4A patent/EP4595411A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024068627A1 (fr) | 2024-04-04 |
| US20260129018A1 (en) | 2026-05-07 |
| FR3140233A1 (fr) | 2024-03-29 |
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