WO2009125152A1 - Procede de gestion d'un service de transmission de donnees - Google Patents
Procede de gestion d'un service de transmission de donnees Download PDFInfo
- Publication number
- WO2009125152A1 WO2009125152A1 PCT/FR2009/050538 FR2009050538W WO2009125152A1 WO 2009125152 A1 WO2009125152 A1 WO 2009125152A1 FR 2009050538 W FR2009050538 W FR 2009050538W WO 2009125152 A1 WO2009125152 A1 WO 2009125152A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mode
- access node
- radio
- communicating entity
- core network
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/12—Access point controller devices
Definitions
- the field of the invention is that of telecommunications and more specifically that of mobile radio networks. More particularly, the invention relates to the management of a data transmission service between a communicating entity and a core network through an access network.
- the establishment of a transmission service depends primarily on the nature of the data to be transmitted. For this purpose, it is possible to distinguish, for example, voice-on-circuit calls whose corresponding data are circuit-type, and voice-over-IP calls whose corresponding data are of a packet nature.
- the uplink that is to say for data coming from a communicating entity destined for a core network
- the data of circuit nature are directed, by an access node of the access network, to a circuit-mode heart network
- the packet-type data is directed to a packet-mode core network.
- the downstream path that is to say for data coming from a core network
- the data of a circuit or packet nature are directed from the core network respectively in circuit mode or in packet mode to the communicating entity, for example.
- the data then traverse different network entities, according to their nature, after establishment of a radio access bearer (for "Radio Access Bearer” in English), between the communicating entity and the core network in packet mode or in circuit mode.
- a radio access bearer for "Radio Access Bearer” in English
- the exchanges between the communicating entity and the core network are managed by intermediate protocol layers according to the OSI model standardized by the ISO (International Organization for Standardization).
- the access node of the access network is for example an RNC base station controller (for "Radio Network Controller” in English) for a third generation mobile radio network such as UMTS, or else a radio station. especially in the context of the implementation of a so-called flat mobile radio network architecture.
- a network architecture is said to be flat when part of the functions of the base station controller is decentralized to the base stations in order to optimize the management of the packet services, for example as specified by 3GPP (for "3rd Generation Partnership"). Project “in English) in the architecture of the LTE system (for" Long Term Evolution "in English).
- the radio access support established between the communicating entity and the core network in packet mode or in circuit mode is composed of a radio bearer RB (for "Radio Bearer” in English) between the communicating entity and the node of access, and a terrestrial resource RT between the access node and the core network in packet mode or in circuit mode.
- the radio access bearer and the terrestrial resource are managed by low layer protocols and defined according to the nature of the data to be transmitted.
- a request for activation of a voice on circuit service corresponds an allocation of a couple [radio circuit support, terrestrial resource circuit]
- a request for activation of a voice over IP service corresponds to a allocation of a couple [packet radio support, packet ground resource].
- the operators are obliged to maintain and size the network. all the access network equipment and the core network in circuit mode in order to satisfy circuit service requests.
- the operators can furthermore provide the communicating entity with the capabilities of the packet mode core network capable of delivering a voice over IP call when the initial request relates to a circuit service request.
- a circuit service such as voice over circuit service can not be established.
- the communicating entities are for example mobile terminals or any equipment comprising a communicating card such as for example a personal digital assistant.
- the invention proposes a method of managing a data transmission service, between a communicating entity operating in a first mode and a core network of a second mode, through an access node. an access network.
- the method comprises in advance the steps of:
- This method thus makes it possible not to solicit a core network of the first mode.
- the service is seen by the communicating entity as a service of the first mode conforming to its request, and seen as a second mode service by the core network of a second mode requested by the access node.
- no modification of the communicating entity is not required, and this entity can benefit from the resources of this core network of the second mode.
- the method may further interact with communicating entities supporting the two modes or only one transmission mode, in an architecture with or without a core network of the first mode.
- the method includes subsequent steps of - converting the data according to the first and second modes, - transmitting the converted data between the communicating entity and the core network.
- the method thus allows the implementation of architecture without core network of the first mode, while ensuring the compatibility of communicating entities of the first mode.
- the existing communicating entities supporting the two modes or simply the first mode are compatible with the implementation of optimized architectures for data associated with a service of the second mode, for example for flat architectures. No redirection of the service request is made and thus no additional delay in the activation of the service is generated.
- the data transmitted by the communicating entity in the form of frames of the first mode are converted in the form of frames of the second mode by the access node, by transcoding the data of the frames of the first mode and inserting a header in the first mode. frames resulting from transcoding.
- the data transmitted by the core network in the form of frames of the second mode are converted as first mode frames by the access node, deleting said second mode frames from a header and transcoding the data.
- the notification to the communicating entity of an allocation of a radio access medium of the first mode comprises a conversion of a notification message from the core network.
- the conversion of the service activation request includes a translation of a quality of service level in the first mode into a quality of service level in the second mode.
- the quality of service during the request for activation of a data transmission service by the communicating entity is guaranteed without additional signaling exchange between the communicating entity and the core network of a second mode.
- the mode change at the access node does not affect the quality of service for the communicating entity.
- the selection of a radio bearer, during the activation step of the service is determined by at least one of the following information:
- the access node may select a radio medium adapted to the capabilities of the communicating entity, or depending on the quality of the radio link or links corresponding to the radio medium between the communicating entity and the access node.
- the invention also relates to a device for managing a data transmission service between a communicating entity operating in a first mode and a core network of a second mode through an access node of a network. access.
- the device comprises: means for converting a service activation request into said first mode transmitted by the communicating entity into a service activation request in the second mode intended for the core network,
- the device further comprises means for converting (C0NV_FL21, C0NV_FL12) data into first and second modes.
- the invention also relates to an access node of a radio access network adapted to be connected to a core network comprising a device according to the invention.
- the device and the access node have advantages similar to those previously described.
- FIG. 1 represents a centralized architecture of a mobile radiocommunication network
- FIG. 2 represents an example of a flat architecture of mobile radio network
- FIG. 3 schematically represents the constituent elements of a data transmission service between a communicating entity and a core network
- FIG. 4 represents the management steps of a transmission service according to the invention
- FIG. 1 represents an example of a centralized telecommunication network architecture implemented for mobile radio networks, for example GSM / GPRS or UMTS GERAN (for GSM Edge Radio Access Network), or UMTS UTRAN (for "UMTS Terrestrial Radio Access Network").
- GSM / GPRS or UMTS GERAN for GSM Edge Radio Access Network
- UMTS UTRAN for "UMTS Terrestrial Radio Access Network”
- the access nodes are base stations 10 controlled by base station controllers 11.
- the base station controllers are, for example, so-called BSC ("Base Station Controller") equipment for access networks 12 of GSM / GPRS or UMTS GERAN type, or so-called RNC equipment (for "Radio Network Controller” in English) for UMTS UTRAN type access networks.
- BSC Base Station Controller
- RNC Radio Network Controller
- the base station controllers are connected to a heart circuit network in circuit mode 13 via an MSC switch 14 (for "Mobile Switching Center” in English), or an MSC and an MGW gateway (for "Media Gateway” in English), and a packet core network 15 via a session management node SGSN 16 (for "Serving GPRS Support Node”).
- This session management node is connected to a GGSN 17 data network interconnection gateway (for "Gateway GPRS Support Node").
- a communicating entity 18 After selecting a mobile radio network providing a circuit service, a communicating entity 18 sends a circuit service activation request to the circuit mode heart network 13 without the access node 10 analyzing the message associated with the request.
- the access node 10 thus simply transfers the request to the heart network in circuit mode.
- the circuit service can be carried out as soon as one of a radio medium is activated between the communicating entity and the access node, and on the other hand a resource between the access node and the heart network in circuit mode.
- the pair [radio bearer, terrestrial resource] is established at the request of the heart network in circuit mode.
- the circuit service is for example a voice call on a circuit, a video call on a circuit or a fax on the circuit.
- the access nodes 21 of an access network 22, also called “Node B +" in the case of the advanced HSPA comprise a base station 23 and an RNS controller 24 comprising a part of the functionalities of the network. base station controller.
- circuit services and connections to the circuit-mode core network are not supported by the RNS controller.
- the circuit service requests of a communicating entity 26 are then redirected to an RNC base station controller 27 supporting the circuit mode and connected to an MSC switch 28 of the heart circuit network in circuit mode.
- the packet services are processed by the RNS controller 24 which is connected to an SGSN session management node 29 of the packet mode core network 30.
- the session management node 29 is connected to a GGSN data network interconnection gateway 31 .
- the activation of a data transmission service is based on the allocation of an RAB radio access support (for "Radio Access Bearer" in English) between the communicating entity EC and the CN-C circuit mode core network or the CN-P packet mode core network, both in a centralized architecture and in a flat architecture.
- the allocation of a radio access support RAB corresponds to the allocation of one or more data streams on the radio interface connecting the communicating entity and the access node.
- a data frame generated by an AMR (Adaptive Multi Rate) type code in the communicating entity may for example be carried by three streams, each stream having a different level of data protection on the radio interface. .
- the radio access support RAB established between the communicating entity EC and the core network in packet mode or in circuit mode, is composed of a radio bearer RB (for "Radio Bearer” in English) between the communicating entity EC and the access node NA, and a terrestrial resource RT between the access node NA and the packet mode core network or the circuit mode core network.
- the resource is for example a support said Iu, ("Iu Support” in English), in the case of a mobile radio network type UMTS version 99 and later.
- the OSI communication model defines data transmission service management using seven overlapping protocol layers: the physical layer (layer 1), the data link layer (layer 2), the network layer (layer 3), the layer transport (layer 4), the session layer (layer 5), the presentation layer (layer 6) and the application layer (layer 7).
- the RAB radio access bearer defined between the communicating entity and the packet core network or the network circuit-mode core is managed by intermediate protocol layers according to this model, typically layers 4 and 5, and depending on the nature of the data to be transmitted.
- the radio support RB and the resource RT are managed by low layer protocols, typically layers 1 to 3, and defined according to the nature of the data to be transmitted.
- a circuit service request corresponding to a first mode of transmission. transmission, for example for a voice over circuit service.
- the second mode of transmission corresponds in this case to a transmission in packet mode.
- a communicating entity first selects a mobile radiocommunication network offering such a service, for example a GSM or UMTS type radio network. This selection is performed after attachment of the communicating entity to an access node and a core network. The attachment is for example made according to the specifications of GSM / GPRS or specifications of UMTS from version 99 for access GERAN and UTRAN.
- the request for activation of a circuit service can be performed on the initiative of the communicating entity and the call is then called outgoing.
- the activation request can also be made on receipt of a message from a remote communicating entity desiring the activation of a circuit service such as a voice call on a circuit.
- the call is then called incoming.
- the communicating entity issues a DSC circuit service request to the core network CN-C mode.
- this service request is completed by a set of information of aptitude of the communicating entity such as, for example and in a non-limiting way, the various supported codecs, the authorized radio supports, the protocols of layers 1 to 7 recognized, supported radio access technologies.
- the service request is decoded by the access node NA.
- the access node analyzes the content of the signaling message (s) generated by the communicating entity.
- the access node analyzes one of the NAS layers (for "Non Access Stratum” in English) supporting unencrypted signaling messages between the communicating entity and the core network.
- the access node stores all or part of the message (s) associated with the service request, for example the type of service requested by the communicating entity.
- step E3 the access node converts the DSC circuit service request into a DSP packet service request to a CN-P packet mode core network.
- the access node translates the circuit mode of service quality requirements indicated in the DSC service request into packet quality of service requirements. This translation is performed for example by reading a configurable correspondence table stored or accessible by the access node.
- the DSP service request is then sent to the core packet network.
- the CN-P packet mode core network requests the access node to establish a packet radio bearer RB_P between the access node and the communicating entity. . It further requests recovery of an RT_P packet resource.
- the access node establishes the packet resource.
- the access node is then the termination of protocols for example layers 3 to 6 according to the OSI model, such as illustrative IP, UDP or RTP protocols.
- the data interconnection gateway GGSN allocates one or more packet communication contexts PDP1, PDP2, ... PDPn ("PDP context" in English).
- the establishment of the communication contexts can be carried out by emulation in the access node of a signaling protocol layer, for example by emulation of the SM layer (for "Session Management" in English).
- the context of PDPL communication said primary context, is dedicated to the transmission of signaling plan data associated with a packet service, for example for a signaling type SIP (for "Session Initiation Protocol" in English).
- the context PDP2, called secondary context is dedicated to the transmission of user plane data associated with a packet service, for example in the form of RTP (for "Real Time Transport Protocol") flow of a voice over packet service. .
- the packet mode core network further assigns one or more IP addresses to the access node as part of the establishment of the communication contexts.
- the access node may further store information from layers 3 to 7 such as the IP address (es) assigned to the access node by the packet mode core network.
- IP address es assigned to the access node by the packet mode core network.
- the access node selects a radio circuit support RB C between the access node and the communicating entity.
- This selection can be performed on load or quality information of the access network accessible by the access node, for example by considering the radio quality of the different radio links corresponding to the radio media.
- This selection may also consider the communicating entity's aptitude information delivered by the latter to the access node during the service request, or previously stored in the access node when, for example, an access procedure is required. attaching the communicating entity to the access network and the core network.
- This selection may also consider indications of authorization of the radio media delivered by the communicating entity to the access node during the service request in step E1.
- This selection may also consider indications on the type of service requested by the communicating entity stored in step E2.
- step E6 the access node requests the communicating entity to establish the selected radio circuit support RB_C, for example according to the specifications of the different versions of UMTS.
- step E7 the access node notifies the packet-based core network that a packet radio bearer RB_P and a packet resource RT_P are available. The packet core network then assumes that packet radio support has been established although in fact a radio circuit support has been established.
- step E8 the packet core network notifies the communicating entity that the packet radio access support RAB_P is established. This notification message that passes through the access node is for example consistent with the specifications of different versions of UMTS.
- step E9 the access node converts the content of the notification message sent by the core network during step E8.
- the SIP signaling messages from the core network are converted into signaling messages conforming to the CC call control protocol (for "CaII Control").
- the converted message is thus a notification message for establishing a radio access support circuit RAB_C. It is then transmitted to the communicating entity.
- the transmission of the data can begin.
- step ElO the access node then provides data conversion.
- the transmission can be bidirectional and the data conversion is done according to the direction of transmission.
- the data transmitted by the communicating entity has a circuit frame format generated by a coding operating in circuit mode.
- These circuit frames are composed of a preamble and a frame body.
- an AMR coding operating in circuit mode generates 31 byte circuit frames every 20 milliseconds.
- the circuit frame is carried by one or more streams corresponding to the radio access circuit support notified by the access node.
- the access node is able to reconstruct the circuit frame from the received subflows.
- the circuit frames are converted into packet frames by transcoding. Transcoding depends on the format of the frames transmitted by the code of the communicating entity.
- the type of codec is, for example, one of the set of proficiency information of the terminal delivered during the step E1, or else previously stored in the access node when, for example, a procedure of attachment of the communicating entity.
- a header corresponding to the packet mode protocol exchanges is then added to the packet frame to form a transport frame for the packet mode.
- the added header corresponds to an IP / UDP / RTP header determined from the information of the layers 3 to 7 stored for example by the access node during the step E4.
- step E11 the packet transport frames are transported to the packet mode core network.
- the data sent by the core packet network has a packet mode transport frame format.
- a packet mode transport frame comprises for example an IP / UDP / RTP header.
- the transport frames further comprise a packet frame generated by a coded and composed of a preamble and a frame body. For example, an AMR coded packet mode generates packet frames of 32 bytes every 20 milliseconds.
- the access node when converting data from the core network, thus deletes the header of the packet transport frame.
- the header may also be stored by the access node in view, for example, of its addition in the opposite direction of transmission.
- the packet frames are converted into circuit frames by transcoding the packet frame.
- Transcoding depends on the type of code of the communicating entity.
- the type of codec is, for example, one of the set of proficiency information of the terminal delivered during the step E1, or else previously stored in the access node when, for example, a procedure of attachment of the communicating entity.
- transcoding an AMR-type packet frame into an AMR-type circuit frame only the preamble is converted in order to obtain 31 byte circuit frames.
- step E11 the circuit frames are transported to the communicating entity by one or more streams corresponding to the radio circuit support.
- the management device of a data transmission service can be implemented in an access node of a mobile radiocommunication network.
- An access node is for example a base station controller in a centralized architecture or a base station having some of the functionality of a base station controller in a flat architecture.
- the access nodes furthermore comprise a central control unit, not shown, to which the included means are connected, and intended to control the operation of these means.
- the access node comprises: conversion means CONV_DS arranged to convert a data transmission service activation request in a first mode transmitted by a communicating entity to a core network of the second mode, in a request of data transmission service in a second mode, SEL selection means of a radio medium of the first mode between the access node and the communicating entity and establishment of a resource of the second mode between said node of access and the heart network, notl notification means arranged to notify the core network of an allocation of a radio access support of the second mode comprising a radio medium and a resource of the second mode, - notification means NOT2 arranged for notifying the communicating entity of an allocation of a radio access bearer comprising a radio bearer and a resource of the first mode.
- the access node further comprises: conversion means CONV_FL12 arranged to convert data from a first mode to a data stream of the second mode,
- conversion means CONV_FL21 arranged to convert data of a second mode into a data stream of the first mode.
- the access node furthermore comprises a memory MEM capable of storing information exchanged between a communicating entity and a core network and transiting in the access node.
- the invention described here relates to a device for managing a data transmission service. Accordingly, the invention also applies to a computer program, in particular a computer program on or in an information recording medium, adapted to implement the invention.
- This program can 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 form desirable to implement the method according to the invention.
- the information recording medium may be any entity or device capable of storing the program.
- the medium may comprise storage means or recording medium on which is stored the computer program according to the invention, such as, but not limited to, a ROM, for example a CD ROM or a ROM of microelectronic circuit, or a USB key, or a magnetic recording means, for example a diskette (floppy disk) or a hard disk, or a smart card.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801176569A CN102027800A (zh) | 2008-03-31 | 2009-03-30 | 管理数据传送服务的方法 |
US12/935,421 US20110021184A1 (en) | 2008-03-31 | 2009-03-30 | Method of managing a data transmission service |
EP09729313A EP2274950A1 (fr) | 2008-03-31 | 2009-03-30 | Procede de gestion d'un service de transmission de donnees |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852094 | 2008-03-31 | ||
FR0852094 | 2008-03-31 |
Publications (1)
Publication Number | Publication Date |
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WO2009125152A1 true WO2009125152A1 (fr) | 2009-10-15 |
Family
ID=39876220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/050538 WO2009125152A1 (fr) | 2008-03-31 | 2009-03-30 | Procede de gestion d'un service de transmission de donnees |
Country Status (4)
Country | Link |
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US (1) | US20110021184A1 (fr) |
EP (1) | EP2274950A1 (fr) |
CN (1) | CN102027800A (fr) |
WO (1) | WO2009125152A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US10091645B1 (en) * | 2017-08-01 | 2018-10-02 | Huawei Technologies Co., Ltd. | Handling mobile device administration in anchorless mobile networks |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999012329A1 (fr) * | 1997-09-04 | 1999-03-11 | British Telecommunications Public Limited Company | Systeme de telecommunications |
WO2005006650A1 (fr) * | 2003-07-10 | 2005-01-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Procede et noeuds pour communication omnibus |
US7106706B1 (en) * | 2001-06-27 | 2006-09-12 | Sprint Spectrum L.P. | Method and system for providing dial-up data sessions |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100477650C (zh) * | 2005-09-30 | 2009-04-08 | 华为技术有限公司 | 下一代网络中的ip互通网关及其实现ip域互通的方法 |
CN101047628A (zh) * | 2006-03-30 | 2007-10-03 | 华为技术有限公司 | 一种电路域终端接入分组网络实现分组业务的系统和方法 |
FI20065323A0 (fi) * | 2006-05-15 | 2006-05-15 | Nokia Corp | Radioresurssien hallinta |
-
2009
- 2009-03-30 WO PCT/FR2009/050538 patent/WO2009125152A1/fr active Application Filing
- 2009-03-30 US US12/935,421 patent/US20110021184A1/en not_active Abandoned
- 2009-03-30 CN CN2009801176569A patent/CN102027800A/zh active Pending
- 2009-03-30 EP EP09729313A patent/EP2274950A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999012329A1 (fr) * | 1997-09-04 | 1999-03-11 | British Telecommunications Public Limited Company | Systeme de telecommunications |
US7106706B1 (en) * | 2001-06-27 | 2006-09-12 | Sprint Spectrum L.P. | Method and system for providing dial-up data sessions |
WO2005006650A1 (fr) * | 2003-07-10 | 2005-01-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Procede et noeuds pour communication omnibus |
Also Published As
Publication number | Publication date |
---|---|
CN102027800A (zh) | 2011-04-20 |
US20110021184A1 (en) | 2011-01-27 |
EP2274950A1 (fr) | 2011-01-19 |
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