WO2005104582A1 - Codec-modus-konfigurationsauswahl bei transcoderfreien operationen - Google Patents
Codec-modus-konfigurationsauswahl bei transcoderfreien operationen Download PDFInfo
- Publication number
- WO2005104582A1 WO2005104582A1 PCT/EP2005/051414 EP2005051414W WO2005104582A1 WO 2005104582 A1 WO2005104582 A1 WO 2005104582A1 EP 2005051414 W EP2005051414 W EP 2005051414W WO 2005104582 A1 WO2005104582 A1 WO 2005104582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- codec mode
- switching unit
- mode configuration
- msc2
- unit
- Prior art date
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Classifications
-
- 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
- H04W88/18—Service support devices; Network management devices
- H04W88/181—Transcoding devices; Rate adaptation devices
Definitions
- the invention relates to a method and a device for establishing a TrFO connection between two communication terminals via a communication network.
- TrFO transcoder-free operation
- a common codec type or, in the case of a multirate codec type, a common set or one must be used between the network units involved (UEs, RNCs, MSCs) Configuration of codec modes (Codec Modes) are negotiated.
- the necessary information is exchanged between communication terminals (UEs) and switching units (MSCs) on the lu interface via NAS signaling or via the Nc interface via BICC signaling.
- RNC radio network controller
- RNC properties radio network controller
- an RNC database is generated in the switching unit (MSC), which contains RNC properties, such as supported codec types and modes, and is loaded by the network operator via O&M device (operation and maintenance).
- codec mode configuration refers to both the modes of a codec, e.g. B. AMR (adaptive multirate codec) as well as different codec types, e.g. B. AMR and GSM fill rate.
- the object of the invention is to propose a simple and efficient way of reducing connection breaks during a transcoder-free operation.
- a core of the invention is that the codec mode configurations supported by the radio network controllers involved are stored in a storage unit. These can be taken into account when negotiating the codec, as a result of which only the codec mode configurations are selected by the switching units MSCs which are actually supported by the radio network controllers (RNCs).
- RNCs radio network controllers
- An advantageous embodiment of the invention consists in that in a radio network controller (RNC) not only a codec mode configuration but also all subsets of the codec mode configuration are supported, ie for example if the codec mode Configuration "a / b / c" is supported, then also the subsets a, b, c, a / b, b / c, a / c.
- RNC radio network controller
- Corresponding information is stored in the storage unit for this purpose, which provides information about which subsets of a codec mode configuration are supported by a radio network controller. This information can be in a signaling message, a
- Element of a message, a bit, etc. are transmitted to a receiving (terminating) switching unit (MSC).
- the receiving switching unit can, for example, check whether the offered codec mode configurations are supported and, in a second step, which subsets of the codec mode configurations are supported.
- FIG. 1 shows a simplified network architecture for negotiating a codec mode for a connection between two communication terminals
- FIG. 2 shows a simplified network architecture for negotiating the codec mode configuration according to the invention
- FIG. 3 shows a simplified network architecture for negotiating the codec Mode configuration including the subsets
- Figure 4 shows an inventive device for performing the method.
- FIG. 1 shows a simplified network architecture for negotiating a codec mode for a connection between two communication terminals UE in, for example, a cellular mobile radio network, such as the UMTS network.
- the radio network controller RNC1 supports two different codec mode configurations (mode (1, 2), (3, 4)). In contrast, all AMR modes 1 to 4 are entered in the memory unit T1 of the controlling switching unit MSC1.
- the switching unit MSC could also be an MSC server or the like.
- BICC Bearer Independent Call Control
- the codec mode configurations that the radio network controller RNC1 supports are not taken into account.
- the second radio network controller RNC2 also supports two different codec mode configurations (mode 1, 2 and mode 4, 5).
- the codec mode configurations in the radio network controller RNC2 are again not taken into account in the storage unit T2 of the second switching unit MSC2. All AMR modes 1 to 5 are again entered in the storage unit T2.
- the originating side transmits with the switching unit MSC1, the RNCl storage unit T1 and the radio network controller RNC1 all supported codec types and modes, for example in the form of a list, table or the like, to the receiving ( terminating) side with the switching unit MSC2, the storage unit T2 and the radio network controller RNC2 (1).
- a codec with a codec mode configuration selected and sent back to the sending side (2) Similar of the supported codec types and modes to the types and modes not supported on the receiving side reduced, a codec with a codec mode configuration selected and sent back to the sending side (2). With the selected codec mode, a RAB assignment (Radio Access Bearer - Assignment) is now initiated in the direction of the radio network controller RNCl (3). However, since the RNCl and RNC2 radio network controllers do not support the selected codec mode configuration (1, 2, 4), the RAB assignment (4) is rejected. This means that no connection can be made with a transcoder-free operation between two communication terminals UE, such as one
- Mobile terminal a mobile computer, a mobile organizer, etc. are manufactured.
- FIG. 2 shows a simplified network architecture for negotiating the codec mode configuration according to the invention.
- a codec mode configuration can consist of a combination of at least two codec modes.
- the codec mode configurations (mode (1, 2) and mode (3, 4)) which are supported by the radio network controller RNCl are entered in the storage unit T1 of the controlling switching unit MSC1.
- the storage unit T1, T2 can also be a unit of the switching unit MSC1, MSC2.
- the second radio network controller RNC2 also supports two different codec mode configurations (mode 1, 2 and mode 4, 5). These two codec mode configurations of the radio network controller RNC2 are entered or stored in the memory unit T2 of the second switching unit MSC2.
- the originating side transmits or signals with the switching unit MSC1, the storage unit T1 and the radio network controller RNCl the codec mode configurations supported by the radio network controller RNCl, for example in the form of a list , Table or the like on the receiving (terminating) side with the switching unit MSC2, the storage unit T2 and the radio network controller RNC2 (1).
- this list, table or similar is used with the codec modes supported by the radio network controller RNC 2. Comparing configurations in the storage unit T2, reduced to the supported codec mode configurations, selecting a codec mode configuration and sending it back to the sending side (2).
- a RAB task (Radio Access Bearer - Assignment) is now initiated in the direction of the RNCl radio network controller (3). Since both radio network controllers RNCl and RNC2 support the selected codec mode configuration (1, 2), a transcoder or operation connection TrFO connection can be set up between two communication terminals UE (4).
- FIG. 3 shows a simplified network architecture for negotiating the codec mode configuration according to the invention, including the subsets.
- the codec mode configuration to be selected is negotiated as described in FIG. 2.
- information is also transmitted to the receiving switching unit MSC2, which indicates that the radio network controller RNCl supports subsets of the signaled codec mode configuration.
- the information can be transmitted in a signaling message, a bit, an element of a message, etc. to the receiving switching unit MSC2.
- the RNCl radio network controller supports all subsets and therefore yes / no information is sufficient (2).
- the sending switching unit MSC1 signals or informs the receiving switching unit MSC2 that subsets are supported by the radio network controller RNCl.
- information is contained in the storage unit T1 that states whether subsets are supported by the radio network controller RNCl.
- the information on whether the radio network controller RNC2 supports subsets is stored in the storage unit T2.
- the receiving switching unit MSC2 can then have at least one codec mode configuration or one
- TrFO connection can be established with mode 2.
- FIG. 4 shows a device according to the invention for performing the method according to FIGS. 2 and 3.
- the device is ideally a switching unit MSC and has a transmitting unit S and a receiving unit ⁇ for mobile communication with other network units, such as a radio network controller RNC, a switching unit MSC and a communication terminal UE.
- the codec mode configurations supported by a network radio controller RNC are stored in a storage unit T.
- the storage unit T can be a table, a database, a list or the like.
- a processing unit V in the switching unit selects such a codec mode configuration for setting up a transcoder-free operation between two communication terminals, which are also supported by the at least two radio network controllers involved (RNCl and RNC2).
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05740115A EP1738601A1 (de) | 2004-04-23 | 2005-03-29 | Codec-modus-konfigurationsauswahl bei transcoderfreien operationen |
BRPI0510162-0A BRPI0510162A (pt) | 2004-04-23 | 2005-03-29 | seleção de configuração de codec mode em operações sem transcoder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410019988 DE102004019988B4 (de) | 2004-04-23 | 2004-04-23 | Codec-Modus-Konfigurationsauswahl bei transcoderfreien Operationen |
DE102004019988.4 | 2004-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005104582A1 true WO2005104582A1 (de) | 2005-11-03 |
Family
ID=34966294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/051414 WO2005104582A1 (de) | 2004-04-23 | 2005-03-29 | Codec-modus-konfigurationsauswahl bei transcoderfreien operationen |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1738601A1 (de) |
CN (1) | CN100512473C (de) |
BR (1) | BRPI0510162A (de) |
DE (1) | DE102004019988B4 (de) |
RU (1) | RU2366112C2 (de) |
WO (1) | WO2005104582A1 (de) |
ZA (1) | ZA200607787B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009000185A1 (fr) * | 2007-06-26 | 2008-12-31 | Huawei Technologies Co., Ltd. | Procédé de transmission et dispositif basé sur un multiplexage par répartition orthogonale de la fréquence (ofdm) |
RU2446605C2 (ru) * | 2007-10-16 | 2012-03-27 | Хуавэй Текнолоджиз Ко., Лтд. | Способ, система и устройство для согласования службы данных сигнализации протокола инициации сеанса |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102726096B (zh) * | 2011-12-27 | 2015-07-29 | 华为技术有限公司 | 编解码协商方法及设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001091489A1 (en) * | 2000-05-22 | 2001-11-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for a connection through a core network |
WO2003094555A2 (en) * | 2002-05-02 | 2003-11-13 | Nortel Networks Limited | Tfo communication apparatus with codec mismatch resolution and/or optimization logic |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001082640A1 (fr) * | 2000-04-26 | 2001-11-01 | Fujitsu Limited | Procede de communication multipoint et dispositif de commande de communication |
EP1182840A1 (de) * | 2000-08-24 | 2002-02-27 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Verfarhren zum Anschluss durch einem Basisnetz |
JP3450295B2 (ja) * | 2000-12-14 | 2003-09-22 | 日本電気株式会社 | 通信方式および方法ならびに交換ノード |
DE60314397T2 (de) * | 2002-04-24 | 2008-02-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Überbrückung von transkodierungsoperationen in einem kommunikationnetz |
EP1518427B1 (de) * | 2002-05-31 | 2006-04-26 | Siemens Aktiengesellschaft | Abfrage der aktuell gültigen bitraten bei unterbrechung eines trfo-calls (anrufs) |
-
2004
- 2004-04-23 DE DE200410019988 patent/DE102004019988B4/de not_active Expired - Fee Related
-
2005
- 2005-03-29 EP EP05740115A patent/EP1738601A1/de not_active Withdrawn
- 2005-03-29 RU RU2006141349/09A patent/RU2366112C2/ru not_active IP Right Cessation
- 2005-03-29 WO PCT/EP2005/051414 patent/WO2005104582A1/de active Application Filing
- 2005-03-29 CN CNB2005800126371A patent/CN100512473C/zh not_active Expired - Fee Related
- 2005-03-29 BR BRPI0510162-0A patent/BRPI0510162A/pt not_active IP Right Cessation
-
2006
- 2006-09-18 ZA ZA200607787A patent/ZA200607787B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001091489A1 (en) * | 2000-05-22 | 2001-11-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for a connection through a core network |
WO2003094555A2 (en) * | 2002-05-02 | 2003-11-13 | Nortel Networks Limited | Tfo communication apparatus with codec mismatch resolution and/or optimization logic |
Non-Patent Citations (2)
Title |
---|
3GPP: "3rd Generation Partnership Project; Technical Specification Group Core Network; Out of band transcoder control; Stage 2 (Release 5)", 3GPP TS 23.153 V5.7.0, March 2004 (2004-03-01), pages 1 - 72, XP002337144, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Specs/archive/23_series/23.153/> [retrieved on 20050721] * |
SIEMENS AG: "OoBTC corrections, supported codec mode configurations", 3GPP TSG CN WG4 #23, N4-040543, 10 May 2004 (2004-05-10) - 14 May 2004 (2004-05-14), pages 1 - 6, XP002337145, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_cn/WG4_protocollars/tsgN4_23_Zagreb/Tdocs/> [retrieved on 20050721] * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009000185A1 (fr) * | 2007-06-26 | 2008-12-31 | Huawei Technologies Co., Ltd. | Procédé de transmission et dispositif basé sur un multiplexage par répartition orthogonale de la fréquence (ofdm) |
RU2446605C2 (ru) * | 2007-10-16 | 2012-03-27 | Хуавэй Текнолоджиз Ко., Лтд. | Способ, система и устройство для согласования службы данных сигнализации протокола инициации сеанса |
Also Published As
Publication number | Publication date |
---|---|
CN100512473C (zh) | 2009-07-08 |
BRPI0510162A (pt) | 2007-10-02 |
CN1947444A (zh) | 2007-04-11 |
RU2366112C2 (ru) | 2009-08-27 |
DE102004019988A1 (de) | 2005-11-17 |
RU2006141349A (ru) | 2008-05-27 |
DE102004019988B4 (de) | 2006-07-27 |
EP1738601A1 (de) | 2007-01-03 |
ZA200607787B (en) | 2008-03-26 |
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