WO2005043813A2 - Verfahren zur aufwandsbeschränkung bei der übertragung von unidirektionalen informationsströmen - Google Patents
Verfahren zur aufwandsbeschränkung bei der übertragung von unidirektionalen informationsströmen Download PDFInfo
- Publication number
- WO2005043813A2 WO2005043813A2 PCT/EP2004/052630 EP2004052630W WO2005043813A2 WO 2005043813 A2 WO2005043813 A2 WO 2005043813A2 EP 2004052630 W EP2004052630 W EP 2004052630W WO 2005043813 A2 WO2005043813 A2 WO 2005043813A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication device
- ivr
- user data
- transmitted
- communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
-
- 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
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
Definitions
- the invention relates to a method for reducing the complexity of processing user data transmitted in the direction of a communication device in cases in which a bidirectional connection between the communication device and a communication partner instance is set up as part of a service, although the service does not require any user data transmission to the communication device ,
- the invention lies in the field of voice and data communication and particularly affects aspects of switching technology.
- Pure information output systems eg pure announcement systems.
- information output systems which only provide the output of information (for example voice information) and which may not be controllable by externally supplied information (such as systems for interactive voice dialog)
- the resources for processing information transmitted to the system can be reduced.
- Pure distribution systems Distribution systems are often limited to the forwarding or relaying of information or user data. Resources for the interpretation or processing of user data can be provided to a reduced extent.
- the saving measures described above are limited by the fact that there must be compatibility when communicating with other devices or end devices.
- There are communication instances e.g. end devices, switching devices or gateways in which a bidirectional connection is provided as part of a communication process, regardless of whether user data is actually being sent to the communication partner instance.
- resources for processing information transmitted by the communication partner instance must be provided by information output systems or communication distribution systems in order to enable a bidirectional connection.
- An example of such a scenario is the information exchange between a pure announcement system and a terminal, in which only a bidirectional connection is supported by the terminal.
- relevant information is only transmitted in one direction (from the announcement system to the terminal)
- user data transmission also takes place in the other direction, which consists, for example, in the transmission of background noise picked up by a microphone of the terminal.
- the user data stream or bearer stream transmitted from the terminal to the announcement system is then irrelevant for the service, but requires processing resources on the part of the announcement system.
- the protocols used provide that information is sent in both directions, which contains statistical statements about the quality of the connection. This information is used, for example, to regulate the transmission rate.
- a participating communication device must therefore have means for generating this information.
- RTP real time protocol
- RTCP real time control protocol
- Protocol stack outputs voice information to a terminal device that only supports bidirectional RTP connections, statistical information about the connection is transmitted in both directions using the RTCP protocol.
- the object of the invention is to make it possible to reduce the complexity of communication devices.
- the invention is based on the observation that for communication devices which generally or for certain services do not provide any useful data transmission to a communication partner instance, in cases in which a bidirectional connection to the partner instance is nevertheless established, for example because the communication partner instance only has bidirectional connections to the
- the protocol used supports the processing effort that can be reduced by the user data transmitted by the communication partner instance by at least a part of this being used by the communication partner instance in the direction of the communication device transmitted user data are discarded.
- the communication partner instance can be given, for example, by a terminal or a gateway.
- the invention has the advantage of greater resource efficiency compared to conventional systems.
- the processing effort is reduced by discarding transmitted user data that are irrelevant to the service. Any irrelevant background noise transmitted during a voice connection is not fully evaluated in the communication device.
- Part of the hardware or software resources that are conventionally provided in the communication device for processing useful data transmitted to the communication device can be saved. This can relate to expensive special hardware, such as DSPs (DSP: digital signaling processor) or ASICs (ASIC: application specific integrated circuit).
- the invention can be used, for example, in packet-oriented networks, via which user data are transmitted as user data packets in the direction of the communication device.
- the packages can be discarded e.g. Realize in the following two ways:
- a router upstream of the communication device discards the user data transmitted to the communication device.
- Incoming data packets are filtered in the communication device, for example using the UDP port addresses (UDP: user datagram protocol), and user data packets that were sent by the communication partner instance are the discarded.
- UDP user datagram protocol
- This filtering out of the user data not relevant for the service can be carried out on the lower layers of the protocol stack. Processing on the upper layers of the communication protocol or evaluation or interpretation of transmitted user data is not necessary, so that no resources have to be provided for this.
- the user data packets are transmitted, for example, using the RTP protocol.
- the RTCP protocol is used to control RTP connections.
- statistical information is transmitted between the communication entities, which often relates to the transmission quality of the user data transmissions of the communication entities.
- the generation of such statistical information or generally control information on the connection quality requires the evaluation of the transmitted user data.
- the present invention provides that a portion of the useful data is discarded for the cases mentioned, that is to say it is not evaluated for the transmission quality.
- control partner instance is not prompted for undesired reactions, in the extreme case of the termination of the bidirectional connection, because of missing or misleading messages or information about the connection established to the communication device.
- the communication device sends information or messages to the communication partner instance, which simulates the proper functioning of the user data transmission from the control partner instance to the communication device.
- a known value range can be used for the control information, which corresponds to interference-free useful data transmission. It is also possible that a small part of the user data is not discarded, but instead used for the calculation of statistical information or control information. evaluates and extrapolates the results obtained for the entire amount of user data.
- FIG. 1 A communication device and a communication partner instance that communicate with one another, with useful data transmitted from the communication partner instance to the communication device being filtered out by a router.
- FIG. 2 A communication device and a communication partner instance in a communication relationship, user data sent from the communication partner instance to the communication device being filtered out and rejected in the communication device.
- FIG. 1 shows a router R which filters out useful data transmitted to the communication device IVR with the aid of a filter F, so that it does not reach the communication device IVR.
- this filter function is carried out by the communication device IVR itself, which uses a filter F to filter out and discard useful data transmitted by the communication partner instance KPI, which thus need not be processed by higher protocol layers.
- the communication device IVR is, for example, a software-based VoIP (VoIP: voice over IP) announcement system based on the RTP and the RTCP protocol.
- VoIP voice over IP
- an announcement system is described as an example of how to work with unidirectionally operated channels instead of bidirectionally operated RTP / RTCP channels.
- an upstream router discards the RTP packets in the direction of the announcement system, so that, despite bidirectional switching, the announcement system is not subjected to an RTP load.
- the call controller controlling the connection or the remote end point connects a symmetrical RTP stream through the IP network to the announcement system.
- a static filter is set up, which recognizes and discards all IP packets leading to the announcement system using the RTP protocol based on the ÜDP (user data protocol) ports used by these protocols.
- ÜDP user data protocol
- RTCP sender reports are sent as provided in RFC 1889 (RFC: request for cornments).
- RFC request for cornments
- the standard already provides that these are sent out relatively rarely, so that it does not require a great deal of computing time.
- the RTCP filter can therefore forward packets to the RTCP protocol protocol stack of the announcement system.
- a perfect functioning of a bidirectional connection can be simulated at the level of the RTCP protocol.
- the RTCP protocol provides for the optional sending of so-called receiver reports from the announcement system to the remote user.
- a bearer or user data stream was physically switched through the IP network, one can try to evaluate the voice streams or voice activity messages picked up by the remote microphone and transmitted via the communication partner instance in order to give the remote user, or his bearer treatment, to pretend a duplex stream, ie a bidirectional connection.
- the reception report can contain the following parameters (according to RFC 1889):
- SSRC Synchronization source
- the RTCP statistics function Controlled via a suitable, time-controlled dynamic filter above the IP stack (which is sensitized to RTP port addresses), the RTCP statistics function only receives RTP packets over a limited period of time (e.g. the duration of an announcement call), e.g. over several equally distributed 100 ms Intervals of the announcement connection lasting an average of 10 seconds were delivered.
- the RTCP ports are basically open here.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Meter Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04791290A EP1678936A2 (de) | 2003-10-29 | 2004-10-22 | Verfahren zur aufwandsbeschränkung bei der übertragung von unidirektionalen informationsströmen |
US10/577,319 US8306194B2 (en) | 2003-10-29 | 2004-10-22 | Method for reducing costs during the transfer of unidirectional information flows |
CN2004800322103A CN1875610B (zh) | 2003-10-29 | 2004-10-22 | 在传输单向信息流时限制费用的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10350353.6 | 2003-10-29 | ||
DE10350353A DE10350353A1 (de) | 2003-10-29 | 2003-10-29 | Verfahren zur Aufwandsbeschränkung bei der Übertragung von unidirektionalen Informationsströmen |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005043813A2 true WO2005043813A2 (de) | 2005-05-12 |
WO2005043813A3 WO2005043813A3 (de) | 2005-08-25 |
Family
ID=34529843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/052630 WO2005043813A2 (de) | 2003-10-29 | 2004-10-22 | Verfahren zur aufwandsbeschränkung bei der übertragung von unidirektionalen informationsströmen |
Country Status (5)
Country | Link |
---|---|
US (1) | US8306194B2 (de) |
EP (1) | EP1678936A2 (de) |
CN (1) | CN1875610B (de) |
DE (1) | DE10350353A1 (de) |
WO (1) | WO2005043813A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10350353A1 (de) * | 2003-10-29 | 2005-06-02 | Siemens Ag | Verfahren zur Aufwandsbeschränkung bei der Übertragung von unidirektionalen Informationsströmen |
US8477759B2 (en) * | 2005-09-30 | 2013-07-02 | Qualcomm Incorporated | Filtering of malformed data packets in wireless communication |
CN101610328A (zh) * | 2009-06-19 | 2009-12-23 | 中兴通讯股份有限公司 | 一种voip媒体网关获取语音资源的方法及*** |
GB201520380D0 (en) * | 2015-11-19 | 2016-01-06 | Qinetiq Ltd | A data hub for a cross-domain communication system |
US11113385B2 (en) * | 2018-12-21 | 2021-09-07 | Paypal, Inc. | Communicating trace information between security zones |
Citations (1)
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EP1096770A2 (de) * | 1999-10-28 | 2001-05-02 | Avaya Technology Corp. | Verfahren und Gerät zur Unterdrückung von Paketen während Sprachpausenperioden in einem Paket-Fernsprechsystem |
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US5793843A (en) * | 1989-10-31 | 1998-08-11 | Intelligence Technology Corporation | Method and apparatus for transmission of data and voice |
US5276681A (en) * | 1992-06-25 | 1994-01-04 | Starlight Networks | Process for fair and prioritized access to limited output buffers in a multi-port switch |
US5457687A (en) * | 1993-09-02 | 1995-10-10 | Network Equipment Technologies, Inc. | Method and apparatus for backward explicit congestion notification (BECN) in an ATM network |
US5862208A (en) * | 1994-02-16 | 1999-01-19 | Priority Call Management, Inc. | Method and system for enabling a party to change terminals during a call |
US5706279A (en) * | 1995-03-24 | 1998-01-06 | U S West Technologies, Inc. | Methods and systems for managing packet flow into a fast packet switching network |
GB9618128D0 (en) * | 1996-08-30 | 1996-10-09 | Sgs Thomson Microelectronics | Improvements in or relating to an ATM switch |
US5953338A (en) * | 1996-12-13 | 1999-09-14 | Northern Telecom Limited | Dynamic control processes and systems for asynchronous transfer mode networks |
US6366651B1 (en) * | 1998-01-21 | 2002-04-02 | Avaya Technology Corp. | Communication device having capability to convert between voice and text message |
US6405033B1 (en) * | 1998-07-29 | 2002-06-11 | Track Communications, Inc. | System and method for routing a call using a communications network |
US6445682B1 (en) * | 1998-10-06 | 2002-09-03 | Vertical Networks, Inc. | Systems and methods for multiple mode voice and data communications using intelligently bridged TDM and packet buses and methods for performing telephony and data functions using the same |
TW420917B (en) * | 1998-11-10 | 2001-02-01 | Ibm | Method and system for reducing telephone costs for calls to service providers |
US6426944B1 (en) * | 1998-12-30 | 2002-07-30 | At&T Corp | Method and apparatus for controlling data messages across a fast packet network |
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EP1421819B1 (de) * | 2001-08-28 | 2006-06-28 | Telefonaktiebolaget LM Ericsson (publ) | Multicast gruppenverwaltung in telekommunikationsnetzen |
SE524599C2 (sv) * | 2002-01-18 | 2004-08-31 | Ericsson Telefon Ab L M | Metod, system och datorprogramprodukt för att anordna tjänstekvalitet QoS |
US7499446B1 (en) * | 2002-04-29 | 2009-03-03 | Cisco Technology, Inc. | Removing jitter in RTP streaming media streams |
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EP1528725B1 (de) * | 2002-07-30 | 2011-09-14 | Nippon Telegraph And Telephone Corporation | Verfahren und System zur Kommunikationssteuerung mit Neuversuch |
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-
2003
- 2003-10-29 DE DE10350353A patent/DE10350353A1/de not_active Withdrawn
-
2004
- 2004-10-22 EP EP04791290A patent/EP1678936A2/de not_active Withdrawn
- 2004-10-22 CN CN2004800322103A patent/CN1875610B/zh not_active Expired - Fee Related
- 2004-10-22 US US10/577,319 patent/US8306194B2/en active Active
- 2004-10-22 WO PCT/EP2004/052630 patent/WO2005043813A2/de active Search and Examination
Patent Citations (1)
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EP1096770A2 (de) * | 1999-10-28 | 2001-05-02 | Avaya Technology Corp. | Verfahren und Gerät zur Unterdrückung von Paketen während Sprachpausenperioden in einem Paket-Fernsprechsystem |
Non-Patent Citations (2)
Title |
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DALGIC I ET AL: "COMPARISON OF H.323 AND SIP FOR IP TELEPHONY SIGNALING" PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, Bd. 3845, 1999, Seiten 106-122, XP000949839 ISSN: 0277-786X * |
SCHULZRINNE H ET AL: "Signaling for Internet telephony" NETWORK PROTOCOLS, 1998. PROCEEDINGS. SIXTH INTERNATIONAL CONFERENCE ON AUSTIN, TX, USA 13-16 OCT. 1998, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, 13. Oktober 1998 (1998-10-13), Seiten 298-307, XP010309377 ISBN: 0-8186-8988-9 * |
Also Published As
Publication number | Publication date |
---|---|
DE10350353A1 (de) | 2005-06-02 |
CN1875610B (zh) | 2010-11-03 |
US8306194B2 (en) | 2012-11-06 |
WO2005043813A3 (de) | 2005-08-25 |
CN1875610A (zh) | 2006-12-06 |
US20070081524A1 (en) | 2007-04-12 |
EP1678936A2 (de) | 2006-07-12 |
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