WO2009024036A1 - Procédé, équipement et système pour un traitement de message dans un réseau de prochaine génération - Google Patents

Procédé, équipement et système pour un traitement de message dans un réseau de prochaine génération Download PDF

Info

Publication number
WO2009024036A1
WO2009024036A1 PCT/CN2008/071234 CN2008071234W WO2009024036A1 WO 2009024036 A1 WO2009024036 A1 WO 2009024036A1 CN 2008071234 W CN2008071234 W CN 2008071234W WO 2009024036 A1 WO2009024036 A1 WO 2009024036A1
Authority
WO
WIPO (PCT)
Prior art keywords
packet
message
node
application
protocol
Prior art date
Application number
PCT/CN2008/071234
Other languages
English (en)
Chinese (zh)
Inventor
Hui Li
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009024036A1 publication Critical patent/WO2009024036A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0025—Provisions for signalling

Definitions

  • the present invention relates to next generation network NGN technology, and more particularly to a method, apparatus and system for processing messages in a next generation network. Background technique
  • the initial positioning of the SIP protocol is to cooperate with the SDP to complete the control functions such as session establishment and release.
  • the SIP protocol later utilizes the SIP extension capability to support various services, for example, introducing the Presence service based on the S IP protocol.
  • This extension of the SIP protocol has led to the evolution of the SIP protocol from the session control protocol to the service protocol, resulting in tight coupling of services and sessions, and complex protocol control.
  • the SIP protocol is constantly expanding.
  • the SIP service is a session-based real-time communication service.
  • the IMS uses a single SIP protocol for service control, which results in limited service capabilities to the SIP protocol.
  • SIP does not have a solution.
  • HTTP protocol is used to support Web services, while Web services use a variety of flexible description languages. Its development is very rapid. For example, hypertext markup language HTML, extensible hypertext markup language X HTML, extensible markup language XML, etc.; corresponding script voices include JavaScr ipt, ASP, PHP, CSS, Applet, Servlet, RSS, etc.
  • the existing NGN protocol architecture does not support the convergence of the NGN service with the Internet (Intern et) network service; and the IP protocol based on the Internet (Interne t) service is an end-to-end protocol, which is incapable of operation and poor security.
  • the problem Summary of the invention
  • the embodiments of the present invention provide a method, an apparatus, and a system for processing a message in a next-generation network, so as to implement convergence of an NGN service with other network services and an open capability of supporting a service.
  • the node receives the second packet from the transport layer, and decapsulates the first packet
  • the third protocol processing module is configured to encapsulate the second packet output by the second protocol processing module into a third packet according to a transport layer protocol, and receive a third packet output by the communication module, from the third report The second packet is encapsulated and output to the second protocol processing module;
  • a first node configured to: when receiving the first packet of the application layer, select a transport layer link from the first node to the next hop node according to the destination address of the first packet, and the first The fourth hop is encapsulated into a second packet, where the next hop node is an intermediate node or the destination node on a transmission path between the source node and the destination node receiving the message packet;
  • the transport layer link sends a second packet to the next hop node;
  • a second node configured to receive a second packet from the transport layer link, and decapsulate the first packet; if the node is determined to be the destination node of the first packet, send the message packet to the application layer, Determining, according to the destination address of the first packet, a transport layer link from the second node to the next hop node, and encapsulating the first packet that is decapsulated into a second packet, and The transport layer link determined by the two nodes sends a second packet to the next hop node.
  • a method of processing a message in a next generation network, the next generation network is based on a transmission control protocol TCP/Internet Protocol IP;
  • the destination node receives the request message packet that is configured by the source node application layer according to the application indication, and the message body of the request message packet carries the application information generated by the application, and the packet header carries information that is not related to the application, and the application-independent information includes the application.
  • the initial duration of the indication
  • the application layer of the destination node constructs a response message according to the application indication, and sends the response message to the source node.
  • the message body of the response message carries the application information generated by the application of the destination node, and the packet header carries an application-independent Information, the application-independent information includes duration.
  • a communication device based on the TCP/IP protocol comprising: a first protocol processing module, a second protocol processing module, a third protocol processing module, and a communication module;
  • the communication module is configured to send a third message output by the third protocol processing module, and receive a third message from the transmission link and transmit the third message to the third protocol processing module.
  • the second protocol processing module is configured to construct a second packet according to the application indication processed by the first protocol, and output the second packet to the third protocol processing module, where the message body of the second packet carries the first packet,
  • the packet header carries information unrelated to the application, the application-independent information includes a duration; and receives a second packet output by the third protocol processing module, and decapsulates the first packet and the second packet from the second packet Decoding the information unrelated to the application and the application information, and transmitting the first message to the first protocol processing module;
  • the third protocol processing module is configured to encapsulate the second packet output by the second protocol processing module into a third packet, and output the third packet to the fourth protocol processing module, and select the second packet according to the destination address of the second packet. Transmitting, by the communication device, a transport layer link to the next hop node; and receiving the third packet output by the fourth protocol processing module and decapsulating the second packet, determining whether the communication device is for receiving the second packet a node, if yes, outputting the decapsulated second message to the second protocol processing module, otherwise, determining a transport layer link from the communication device to the next hop node according to the destination address of the second packet, Encapsulating the decapsulated packet into a third packet and outputting the third packet to the fourth protocol processing module, where the fourth protocol processing module is configured to encapsulate the third packet output by the third protocol processing module according to the transport layer protocol a fourth packet, and a fourth packet outputted by the communication module, decapsulating the third packet from the fourth packet and transmitting the third packet to the third protocol processing
  • a second node configured to decapsulate the application information after receiving the request message, and determine that the local node is the destination node of the application information, and then report the application information to the application of the local node for processing; Instructing to construct a response message message and sending the message to the first node, the message body of the response message message carrying application information generated by the application of the destination node, the message header carrying information not related to the application, the application-independent information including the persistent duration.
  • the source node application layer carries the application information generated by the application in the message body of the configured request message, and carries the application-independent time including the initial duration in the packet header.
  • the application layer decapsulates the application information, and reports the application information to the application for processing, and then carries the application information generated by the application of the destination node in the message body of the constructed response message message.
  • the technical solution of the embodiment of the present invention can not only inherit the existing business application but also support the new business application.
  • FIG. 4 is a schematic diagram of a structure of a layered dual-plane signaling network according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a communication apparatus based on the protocol architecture of FIG. 8 according to the embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a fifth NGN protocol architecture according to an embodiment of the present invention.
  • Figure 16 is a flow chart of the Web client accessing the Web server. detailed description
  • the NGN network in this embodiment uses the transport layer or network layer of the existing IP network as the transport virtual network to inherit the existing service applications, support new service applications, provide network manageability, and future convergence evolution. .
  • the GSTP protocol inherits the SS7 signaling network networking and management capabilities, supports hierarchical networking, and supports link priority selection, redundancy control, link security, QoS, NAT traversal, firewall traversal, fault detection, and status reporting.
  • the destination address of the first packet may include: an internet protocol address of the transmission control protocol/internet protocol, or an application identifier (eg, a host identifier, a user identifier, a service identifier, etc.), and protocol port information (including a transmission control protocol) /Transport layer port of the Internet Protocol, application distribution parameters, etc.). As shown in FIG.
  • the GSTP protocol of the signaling transfer point STP2 After receiving the application message packet from the link, the GSTP protocol of the signaling transfer point STP2 unpacks the GST P header, and selects an appropriate signaling link L ink5 from the link of the signaling network according to the destination address and port. The received message packet is then sent to the next hop (ie, signaling point SP5) via the selected link.
  • FIG. 4 An example of a hierarchical biplane signaling network structure consisting of multiple signaling transfer points S TP is shown in FIG. 4, which is transformed by a signaling point SP, a low-level signaling transfer point LSTP, and advanced signaling.
  • the junction is composed of HSTP.
  • the signaling point SP implements signaling communication inside the local network through LSTP in the local network.
  • the signaling point SP connects to HSTP through the LSTP in the local network to implement cross-local signaling communication.
  • Each signaling point SP establishes a link with at least two L STPs, and each LSTP establishes a link with two HSTP communication planes.
  • HSTP has two communication planes at the same time. When one communication plane fails, the signaling is transmitted through another plane.
  • the redundant network thus established can ensure that the entire signaling transmission does not have a single point of failure, thereby effectively ensuring the reliability of signaling transmission.
  • GSIP provides transaction control and dialog control functions in a peer-to-peer manner.
  • the GSIP protocol can provide the registration authentication function of the terminal, but from the implementation point of view, the registration authentication function is a special transaction or conversation.
  • the session in the S IP protocol is a special service provided by the application layer through the layer-by-layer dialogue mode.
  • the service application layer can implement the session service by calling the session control mechanism of the layer.
  • the application layer protocol invokes the GS IP transaction or the conversation interface to transmit the message packet to the service transport layer; the GS IP protocol of the service transport layer sends the message packet.
  • Encapsulated as a GS IP protocol packet carrying the application information generated by the application layer in the message body of the message, and carrying the transaction control information and/or the session control information irrelevant to the application (or service) in the packet header, for example, Conversation identifier, source address, destination address, message sequence number, initial duration, etc.; then, the GS IP protocol message is transmitted to the IP transport layer; the protocol of the IP transport layer and the IP network layer encapsulates the GS IP protocol packet as The transport layer message is sent, and then the message is sent.
  • each protocol layer For the destination node that receives the transport layer packet, each protocol layer performs a decapsulation operation opposite to the sender's encapsulation operation, and the GSIP packet is extracted from the transport layer packet; the GS IP protocol is decapsulated from the GSIP packet.
  • the message packet is sent to the upper application layer, and the application layer decapsulates the message message and processes the application message, and performs corresponding according to the transaction control information and/or the dialog control information decapsulated from the first message. operating, For example, a response is made.
  • the packet body In the response message that is configured by the destination node according to the application indication, the packet body carries the application information generated by the application of the destination node, and carries the transaction control information and/or the session control information, such as the dialog identifier, that are not related to the application in the packet header. Message sequence number, duration, etc.
  • the message carries the application information generated by the application in the message body of the message, and carries the transaction control information and/or the session control information in the message header of the message, for example, the session identifier, the source address, and the destination address. Information such as a message sequence number, an initial duration, and the like; and decapsulating the first packet from the second packet reported by the IP protocol module 62, outputting the first packet to the application protocol processing module 60, and according to the second
  • the message decapsulated transaction control information and/or the dialog control information perform corresponding operations (eg, response); IP protocol processing mode
  • the second packet outputted by the GS IP protocol processing module 61 is encapsulated into a third packet (ie, a transport layer packet) according to the IP protocol, and the second packet is decapsulated from the third packet reported by the communication module 63. And transmitting to the GS IP protocol processing module 61; the communication module 63 sends the third message output by the IP protocol processing module 62, and receives the third message from the link and transmits
  • the third NGN protocol architecture in this embodiment is shown in FIG. 7, and the NGN protocol architecture is shown in FIG.
  • GSAP uses various transport protocols in a transport protocol independent manner, including: GSIP, HTTP, SIP, and so on.
  • the fourth NGN protocol architecture in this embodiment is shown in FIG. 8.
  • the NGN protocol architecture is a combination of the NGN protocol architectures shown in FIG. 1 and FIG. 5.
  • the service transport layer and the signaling transport layer added to the existing protocol architecture constitute an NGN layered network, and the GS IP protocol of the service transport layer provides transaction control and/or dialog control functions in a peer-to-peer manner, and can support different networks.
  • Service providing bidirectional stateful application-independent control mechanism; GSTP protocol of signaling transmission layer converts existing end-to-end IP link into segmented signaling link, providing general manageable signaling for application layer protocol transmission.
  • the GSTP protocol processing module 92 encapsulates the second packet output by the GSIP protocol processing module 91 into a third packet and transmits the packet to the IP protocol processing module 93, and decapsulates the third packet received from the IP protocol processing module.
  • Second message if GSTP protocol module 92 determines this The communication device is the destination node that receives the application message, and the second packet that is decapsulated is transmitted to the GS IP protocol processing module 91. Otherwise, the GSTP protocol processing module 92 forwards the message, that is, the GSTP protocol processing module 92 according to the The destination address of the second packet determines the transport layer link from the local node to the next hop node, and the second packet is encapsulated into a third packet and transmitted to the IP protocol processing module 93.
  • the IP protocol process 93 encapsulates the third packet into a fourth packet and transmits it to the communication module 94, and decapsulates the third packet from the fourth packet reported by the communication module 94 and transmits the third packet to the GSTP protocol processing module
  • the fifth NGN protocol architecture in this embodiment is shown in FIG. 10, and the NGN protocol architecture is a combination of the NGN protocol architectures shown in FIG. 1 and FIG. 7.
  • the service application layer, the service transport layer, and the signaling transport layer added to the existing protocol structure constitute an NGN layered network.
  • FIG. 9 A communication device based on the NGN protocol architecture shown in FIG. 10 is shown in FIG. 9.
  • the application protocol processing module supports the SGAP protocol, and the remaining modules are the same as those in FIG. 9, and are not described again.
  • the GSAP protocol uses various transport protocols in a transport protocol independent manner, including: GS IP, HTTP, S IP, and so on.
  • the GSIP protocol uses various transport protocols in a transport protocol-independent manner, including: GSTP, TCP, SCTP, etc.; Since the GSTP protocol provides a manageable signaling network function, GSTP is The best transmission protocol.
  • the GS IP protocol transmits various service protocols in a service-independent manner.
  • the GSTP protocol uses various transport layer protocol connections of the TCP/IP protocol stack as signaling links; for the upper layer service transport layer, the GSTP protocol shields the signaling network and the transport protocol for applications.
  • the layer provides messaging, reporting, and routing forwarding.
  • GS IP protocol Based on the service transport layer GS IP protocol, various existing protocols based on the HTTP protocol, such as S0AP, Protocols such as WSDL and UDDI, as well as Web services such as HTML and XML, can be migrated to the GSIP protocol for transmission, enabling smooth transition and evolution of services.
  • S0AP Session Initiation Protocol
  • Protocols such as WSDL and UDDI
  • Web services such as HTML and XML
  • This embodiment further describes the transaction and dialog control by using the GS IP protocol as an example. Since a transaction can be thought of as a special conversation with a duration of zero, transaction and dialog control can be unified, and the duration is divided into transactions or conversations, that is, the initial duration of the conversation is non-zero, and the initial duration of the transaction is zero. .
  • the GS IP protocol processing module in the device carries a non-zero initial duration in the constructed dialog request message message.
  • the GSIP protocol processing module carries the non-zero duration of the application confirmation in the constructed session response message, and creates a relationship between the node and the source node.
  • Conversation if the application indicates to refuse to create a conversation, the GS IP protocol module carries a duration of zero in the constructed dialog response message message and does not create a conversation.
  • the processing procedure of the signaling network to transmit the signaling message is the same as the processing flow in the signaling network shown in FIG. 3, and details are not described herein again.
  • the client receives the service application layer request information to initiate a transaction request, and the header of the request message carries the transaction identifier, the message sequence number, the initial duration (the value is zero), and puts the application information into the message body.
  • the request message is sent to the server through the transport layer TCP connection.
  • the server performs an access check on the request message, and the application information is reported to the application from the message body. Then, the temporary response message is constructed according to the indication of the application, and the duration of the temporary response message is zero. And return a temporary response message to the client through the transport layer TCP connection.
  • the server constructs a transaction request response message according to the indication of the application, and returns a transaction response message, and the duration of the response message carries zero duration.
  • the client extracts the application information from the message body and reports it to the application.
  • the registration server checks the request message, extracts the registration information from the message body for processing; then, creates a registration dialog, and authenticates the user according to the registration information.
  • the registration authentication information is included in the response message returned to the user.
  • the client session monitoring timer expires and the client session initiates a session refresh request.
  • the registration server logs out the user successfully, it initiates a request to release the registration dialog.
  • the session server service application layer processes the service after receiving the session progress temporary response.
  • the GSIP conversation interface is then invoked to send a session progress temporary response to the caller.
  • the caller receives the message and processes the service.
  • the web client invokes the GSIP transaction interface according to the user operation of the browser, constructs a message, and initiates a web request to the web server.
  • the embodiment of the invention adds a transmission protocol in the transport layer protocol of the TCP/IP protocol stack or based on the IP network layer, and provides a general manageable signaling transmission for the application layer protocol; in the TCP/IP protocol stack
  • the transport layer protocol or the peer-to-peer provides transaction control and/or dialog control functions on the IP network layer to support services of different networks. Therefore, the technical solution of the embodiment can not only inherit the existing service application, but also support the new service application; can provide the manageability of the network system, and support the future convergence evolution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention porte sur un procédé, sur un équipement et sur un système pour un traitement de message dans un réseau de prochaine génération (NGN) pour mettre en œuvre la fusion de services dans un NGN et d'autres réseaux et pour supporter la possibilité d'ouverture de services. Le procédé comprend les opérations consistant à recevoir le message provenant de la couche d'application au niveau du nœud source ; décider de la liaison de couche de transport entre la source et le nœud de saut suivant conformément à l'adresse de destination du message et encapsuler le message, ledit nœud de saut suivant étant un nœud à mi-distance au niveau du trajet de transport entre la source et la destination ; transporter le message vers le nœud de saut suivant par l'intermédiaire de la liaison de couche de transport décidée.
PCT/CN2008/071234 2007-08-17 2008-06-06 Procédé, équipement et système pour un traitement de message dans un réseau de prochaine génération WO2009024036A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA200710129685XA CN101369960A (zh) 2007-08-17 2007-08-17 在下一代网络中处理消息的方法、装置及系统
CN200710129685.X 2007-08-17

Publications (1)

Publication Number Publication Date
WO2009024036A1 true WO2009024036A1 (fr) 2009-02-26

Family

ID=40377830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/071234 WO2009024036A1 (fr) 2007-08-17 2008-06-06 Procédé, équipement et système pour un traitement de message dans un réseau de prochaine génération

Country Status (2)

Country Link
CN (1) CN101369960A (fr)
WO (1) WO2009024036A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115529302A (zh) * 2022-09-23 2022-12-27 中国铁道科学研究院集团有限公司通信信号研究所 一种应用程序网络通信数据交互流程的建模与仿真方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932061A (zh) * 2010-07-14 2010-12-29 新邮通信设备有限公司 一种长期演进增强系统中传递公共过程信息的方法和系统
JP5682208B2 (ja) * 2010-10-04 2015-03-11 ソニー株式会社 通信装置、通信制御方法及び通信システム
CN102065480A (zh) * 2010-11-22 2011-05-18 北京邮电大学 基于路径优先级的无线传感器网络拥塞避免与控制方法
CN103312731B (zh) * 2012-03-06 2017-10-17 杭州华为企业通信技术有限公司 同时支持tls短连接和长连接的处理方法和系统及设备
WO2015035649A1 (fr) * 2013-09-16 2015-03-19 华为终端有限公司 Procédé et système de registre de réseau
US10491525B2 (en) 2015-03-10 2019-11-26 Huawei Technologies Co., Ltd. Traffic engineering feeder for packet switched networks
CN107360205B (zh) * 2016-05-09 2020-12-29 阿里巴巴集团控股有限公司 数据报文的传输方法及装置、系统
CN106101239B (zh) * 2016-06-21 2018-12-25 杭州迪普科技股份有限公司 Http重定向报文的重写方法及装置
CN109428851B (zh) * 2017-07-06 2021-08-10 阿里巴巴（中国）有限公司 一种数据传输组件及方法
CN111600775B (zh) * 2020-05-15 2022-02-22 苏州浪潮智能科技有限公司 一种集群加密迁移的安全性测试方法、装置、设备和介质
CN114698025A (zh) * 2020-12-28 2022-07-01 华为技术有限公司 一种通信方法及节点
CN115277560B (zh) * 2022-09-28 2023-01-17 鹏城实验室 基于mptcp和mpquic的异构网络融合传输方法及系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1406035A (zh) * 2001-09-17 2003-03-26 Lg电子株式会社 用于tcp/ip协议组的传输控制设备和方法
CN1578363A (zh) * 2003-07-18 2005-02-09 鸿富锦精密工业（深圳）有限公司 网络电话系统及通信方法
CN1906954A (zh) * 2003-12-11 2007-01-31 诺基亚公司 信令传输转换器
US20070070996A1 (en) * 2005-09-26 2007-03-29 Oran David R Port hopping scheme for peer-to-peer connections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1406035A (zh) * 2001-09-17 2003-03-26 Lg电子株式会社 用于tcp/ip协议组的传输控制设备和方法
CN1578363A (zh) * 2003-07-18 2005-02-09 鸿富锦精密工业（深圳）有限公司 网络电话系统及通信方法
CN1906954A (zh) * 2003-12-11 2007-01-31 诺基亚公司 信令传输转换器
US20070070996A1 (en) * 2005-09-26 2007-03-29 Oran David R Port hopping scheme for peer-to-peer connections

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115529302A (zh) * 2022-09-23 2022-12-27 中国铁道科学研究院集团有限公司通信信号研究所 一种应用程序网络通信数据交互流程的建模与仿真方法
CN115529302B (zh) * 2022-09-23 2023-10-03 中国铁道科学研究院集团有限公司通信信号研究所 一种应用程序网络通信数据交互流程的建模与仿真方法

Also Published As

Publication number Publication date
CN101369960A (zh) 2009-02-18

Similar Documents

Publication Publication Date Title
WO2009024036A1 (fr) Procédé, équipement et système pour un traitement de message dans un réseau de prochaine génération
US9331967B2 (en) Browser/HTML friendly protocol for real-time communication signaling
US7830861B2 (en) Method and apparatus for functional architecture of voice-over-IP SIP network border element
US9307031B2 (en) Generic model for customizing protocol behavior through javascript
US9137200B2 (en) Ice based NAT traversal
US8432896B2 (en) System and method for optimizing communications between session border controllers and endpoints in a network environment
CN106850399B (zh) 一种基于WebRTC技术即时消息的通信方法
US20140222963A1 (en) Integrated web-enabled session border controller
CN101313554A (zh) 基于ip多媒体子系统的交互式媒体会话建立系统和方法、装置
US9648049B2 (en) System and method for extending IP multimedia subsystem to HTML5 environments
JP2011524095A (ja) Ｓｉｐ−ｈｔｔｐアプリケーション相関器
JP2006254402A (ja) マルチメディア会議システム，それを用いた会議方法、およびコンピューターの判読可能メディア
JP6983218B2 (ja) データグラムベースのトランスポート層を介したカプセル化メディアトラフィックの効率的転送
US20180255182A1 (en) Web Real-Time Client Communication Over a Stimulus Based Network
JP2010506533A (ja) Ｉｍｓデバイスの再設定
WO2007019777A1 (fr) Méthode d’établissement de session et nœud de contrôle de session
EP3281376B1 (fr) Communication en cours de session
JP5465260B2 (ja) Ｉｐドメイン間の相互接続を構成する方法、システムおよび装置
JP2011515980A (ja) 通信システムにおけるピアツーピアマルチメディア接続の状態を問い合わせるシステムおよび方法
Svrzić et al. Description of the process of tunneling Q signaling in private telecommunication networks
EP2059001B1 (fr) Élément de traitement SIP multi-type
Chou et al. Web service for tele-communication
JP2005039803A (ja) ゲートウエイ及び方法
Goulart et al. On overlapping resource management and call setup signaling: a new signaling approach for internet multimedia applications
Ramos Analyzing the Media Control interfaces and Mobile Media Gateway for the Ip Multimedia Subsystem (IMS)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08757645

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08757645

Country of ref document: EP

Kind code of ref document: A1