EP1174000A1 - Multiplexsystem mit schicht-1- und signalisierungs-übertragungskanälen - Google Patents
Multiplexsystem mit schicht-1- und signalisierungs-übertragungskanälenInfo
- Publication number
- EP1174000A1 EP1174000A1 EP00929290A EP00929290A EP1174000A1 EP 1174000 A1 EP1174000 A1 EP 1174000A1 EP 00929290 A EP00929290 A EP 00929290A EP 00929290 A EP00929290 A EP 00929290A EP 1174000 A1 EP1174000 A1 EP 1174000A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- information
- isdn
- transmission
- signaling
- multiplex system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 84
- 230000011664 signaling Effects 0.000 title claims abstract description 36
- 238000004891 communication Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 12
- 230000004913 activation Effects 0.000 description 4
- 230000009849 deactivation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0435—Details
- H04Q11/0457—Connection protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1623—Plesiochronous digital hierarchy [PDH]
- H04J3/1647—Subrate or multislot multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13176—Common channel signaling, CCS7
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13178—Control signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13202—Network termination [NT]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13203—Exchange termination [ET]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13204—Protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13209—ISDN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13216—Code signals, frame structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13292—Time division multiplexing, TDM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
Definitions
- the communication terminals such as, for example, ISDN communication terminals
- the communication terminals are connected over longer distances via multiplex systems.
- various information is additionally transmitted between the exchange-side and the communication terminal-side multiplexer and in the opposite direction - such as described in the publication "Flexibel Multiplexer FMX", Siemens AG, 1995.
- This information represents signaling information - in the case of ISDN communication terminals, D-channel signaling information - as well as bad-1 information and company-specific information.
- the transmission technology layer i.e. controlled the transmission technology, which in particular represents the information activating or deactivating the transmission technology, indicating the operating state and controlling test loops.
- the information is transmitted from one multiplexer to the opposite multiplexer via lines, in particular metallic and optical conductors.
- Transmission channels are provided for the transmission of the information, the transmission speed of a transmission channel usually being 64 or 56 kbit / s in multiplexers.
- a transmission channel of 64 kbit / s or 56 kbit / s is usually provided for the transmission of the message information, with digitized speech information being able to be compressed and several speech channels being routed via one transmission channel.
- an ISDN connection is an additional transmission channel for the transmission of the signaling information, the Sch ⁇ cht-1 information and the company-specific information provided.
- the object of the invention is to use the transmission channels more efficiently for the information to be transmitted in addition to the message information.
- the problem is solved on the basis of a multiplex system according to the features of the preamble of claim 1 by its characterizing features.
- the essential aspect of the multiplex system according to the invention can be seen in the fact that at least one predefined transmission channel is used exclusively for the transmission of ISDN signaling information and ISDN operation-specific information and another predefined transmission channel is used exclusively for the transmission of ISDN Schicht 1 information is provided, the ISDN Sch ⁇ cht 1 information of the transmission channels being transmitted in a static mode.
- the Sch ⁇ cht 1 information By transmitting the Sch ⁇ cht 1 information in a separate transmission channel for all communication terminals connected on the communication terminal side and by transmitting signaling information from several connected communication terminals together with the transmission-specific information, transmission channels can be saved, in particular when ISDN communication terminals are connected.
- the ISDN Sch ⁇ cht 1 information is represented here by layer 1 activation deactivation information, by layer 1 loop control information and by layer 1 status information.
- Claim 2 is advantageous in the static mode, means for forming layer Coding words representing 1 information are provided - claim 3. With the aid of the coding words, a number of bad-1 information items can be provided - for example, with four bits, sixteen coding words or sixteen different bad-1 information items.
- the multiplexers means for the transmission of the predetermined static m, another transmission channel in accordance with a loadlichfugten Codierworter Look - method is provided - Claim 4. This causes a storunempfmdli- chere while rapid transfer of Sch ⁇ cht-1- ⁇ infor mation, where the Sch ⁇ cht-1 information represents internal information, ie information relating only to the multiplexer.
- the multiplexers have an ISDN protocol provided for the transmission of the ISDN signaling information for the transmission of the company-specific information - claim 5.
- the ISDN signaling information is advantageous in accordance with the ISDN-oriented D-channel protocol formed - claim 6.
- This protocol extension is based on an existing transmission protocol - advantageously the D-channel protocol - which is expanded with little additional economic effort and is also used for the transmission of company-specific information.
- the multiplexers also have means for multiplexing the signaling channels of the communication terminals (KE) in the at least one transmission channel — claim 7. For example, four ISDN-compliant D channels, each with 16 kbit / s, are multiplexed into a predetermined transmission channel.
- FIG. 1 is a block diagram of a multiplex system according to the invention
- FIG. 2 is a block diagram of a realization relating to the signaling and bet ⁇ e-specific information in the multiplexers.
- 1 shows a multiplex system which is formed by a multiplexer COT arranged on the switching system side and by a peripheral multiplexer RMT arranged on the communication terminal side.
- the two multiplexers RMT, COT are connected to one another via, for example, a 2048 kbit / s connection V, connection V being able to be made via a communication network - for example a fixed communication network - indicated in FIG. 1 by an oval labeled KFN .
- Network termination units NT are connected to the peripheral multiplexer RMT, a network termination unit NT being represented as representative of several connectable network termination units NT - with several connections V with 2048 kbit / s each between the multiplexers RMT, COT, several network termination units NT or communication terminals KE are connected to the peripheral ones Multiplexer RMT can be connected.
- the network termination units NT are each connected to at least one communication terminal device KE - an example is shown which is connected to the network termination unit NT shown.
- the communication terminals KE are implemented by ISDN communication terminals and are connected to the network termination units NT via an SO interface SO.
- the network termination units NT are brought to the peripheral multiplexer RMT via the standardized UKO interfaces operating according to the echo compensation transmission method.
- a transmission unit UK0 is provided for each network termination unit NT introduced, by means of which the echo compensation transmission method is also implemented.
- two transmission channels TC are brought to the peripheral multiplexer RMT at a transmission speed of 64 kbit / s, the two message channels TC being transparent to a switching device via the peripheral multiplexer RMT and the connection V via the multiplexer COT. are led.
- These two transmission channels TC ⁇ the messages, for example, a digitized - received speech information.
- the network termination units NT each route a signaling channel D to the peripheral multiplexer RMT.
- the signal I D has a ⁇ s istskanal Ubertragungsgeschwmdtechnik of 16 kbit / s and ISDN Signaltechnischsmformation d is formed according to the standard D-channel protocol and uber- averages.
- signaling channels D m of the two multiplexers RMT, COT m are at least one predetermined transmission channel SC. multiplexed at a transmission speed of 64 kbit / s. At a transmission speed of 16 kbit / s signaling channel D, four signaling channels D are combined in the predetermined transmission channel SC. If, for example, 12 ISDN basic connections SO are connected to the peripheral multiplexer RMT, there are three predetermined transmission channels SC in each transmission direction. required.
- the packet-oriented signaling information d are transmitted via the predefined transmission channels SC. transparent, ie transmitted unchanged. Furthermore, the transmission channels SC. arranged signaling channels D additionally transmit the information that is not intended for the multiplexer RMT, COT itself.
- EOC Embedded Operational Channel
- a protocol extension of the D-channel protocol is advantageously provided for the transmission of this additional information eoc, with which information can additionally be transmitted in the signaling channel D or in the D-channel.
- the presence of the protocol extension is verified as part of the initialization of the multiplexer RMT, COT at the respective counter-multiplexer COT, RMT and the protocol extension is activated if present.
- a further transmission channel CM - for example Ubertra ⁇ supply channel 16 - exclusively for the transmission of Sch ⁇ cht-1-il Informat ⁇ onen as activation and deactivation rungsmformationen defined between the two multiplexers RMT, COT.
- Such Sch ⁇ cht-1 information il represent, for example, activation and deactivation formations for closing test loops in the multiplexer RMT, COT or for activating or deactivating transmission-related units or for displaying signal losses.
- the further transmission channel CM is structured here into several subchannels , in which the information to be transmitted is entered statically. For example, each subchannel comprises 4B ⁇ t, to which 16 coding levels or coding words can be assigned.
- coding words 16 different pieces of information, for example commands or indications, can be transmitted and displayed to the respective counter-multiplexer.
- Two coding words have a special meaning. Coding word 0000 must not be used, as otherwise there will be difficulties in interpreting the frame sync word and coding word 1111 indicates to the counter-multiplexer that there is no line connection module for the respective communication terminal KE present or inserted.
- the different ISDN Sch ⁇ cht-1 information il are assigned to the other coding words.
- the coding words or the Sch ⁇ cht-1 information il are transmitted at least three times for reasons of interference safety and should be received at least twice in succession - also known to the experts as "double last look" - in order to be rated as valid.
- FIG. 2 shows a block diagram of the transmission path SPF of the peripheral and the reception path EPF of the multiplexer RMT, COT for the ISDN signaling information si to be transmitted and the ISDN operation-specific information eoc, the transmission and reception path SPF, EPF in each case is connected to an interface unit ISDNE.
- the transmission-related interfaces UKO are implemented for the ISDN communication terminals KE to be connected.
- the message channels - in ISDN the B channels - and the signaling channels, ie the D channels, are separated.
- the ISDN-specific and e-specific information eoc formed by the interface units ISDNE or received by the communication terminals KE is passed to an output A of the interface units ISDNE.
- the separate ISDN signaling information d with a transmission speed of 16 kbit / s is received in the transmission path SPF of the peripheral multiplexer RMT with an HDLC receiver HD-E in accordance with the protocol and is written into a buffer memory PS by this m.
- ISDN operating-specific information eoc present at output A is likewise written into this buffer memory - indicated in FIG. 2 by an arrow labeled eoc.
- the following HDLC receiver HD-E x which operates according to an extended signaling protocol, reads the written information eoc, d from the buffer memory PS and multiplexes the two information eoc, d again to a bit stream of 16 kbit / s.
- This multiplexed bit stream forms an extended signaling channel D, which is multiplexed into the at least one predetermined transmission channel SC of 64 kbit / s.
- This predetermined transmission channel CS is multiplexed the multiplex stream of 2048 kbit / s - not shown.
- the signaling channels D are selected for each communication terminal device KE (not shown, by demultiplexing) and received by an HDLC receiver HD-E operating according to an extended ISDN signaling protocol.
- the ISDN signaling information d and the ISDN operating-specific information eoc are again separated and separately written into a buffer memory PS.
- an HDLC receiver HD-E reads the ISDN signaling information d and forwards it to the interface concerned.
- the ISDNE which is implemented in the same way as in the peripheral multiple ⁇ xer RMT, continues.
- the signaling channel D together with the two message channels B is routed to a switching device (not shown) via the transmission interface UKO.
- the multiplexers RMT, COT are implemented in the same way - not shown in FIG. 2.
- the invention is not limited to the exemplary embodiment, but can generally be used in multiplex systems with a plurality of transmission channels between the multiplexers RMT, COT, an expandable transmission protocol being provided for the transmission of the ISDN signaling information d.
- the ISDN Sch ⁇ cht-1 information il can be very different.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19919371 | 1999-04-28 | ||
| DE19919371 | 1999-04-28 | ||
| PCT/DE2000/001179 WO2000067517A1 (de) | 1999-04-28 | 2000-04-14 | Multiplexsystem mit schicht-1- und signalisierungs-übertragungskanälen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1174000A1 true EP1174000A1 (de) | 2002-01-23 |
Family
ID=7906201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00929290A Withdrawn EP1174000A1 (de) | 1999-04-28 | 2000-04-14 | Multiplexsystem mit schicht-1- und signalisierungs-übertragungskanälen |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1174000A1 (de) |
| WO (1) | WO2000067517A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3823913A1 (de) * | 1988-07-14 | 1990-01-18 | Siemens Ag | Komunikationssystem mit vorgegebenen, von einer kommunikationsanlage durch informationsuebermittlung bestimmte und gesteuerte funktionen versehenen kommunikationsendeinrichtungen |
| DE4441357A1 (de) * | 1994-02-15 | 1995-08-17 | Siemens Ag Albis | Verfahren zum Übermitteln von Daten zwischen Fernmeldenebenstellenanlagen |
| US5771236A (en) * | 1996-09-10 | 1998-06-23 | Adtran, Inc. | Method for increasing ISDN channel capacity of TDM serial communication link for digital subscriber line channels |
| SE511344C2 (sv) * | 1996-10-01 | 1999-09-13 | Ericsson Telefon Ab L M | Anordning och förfarande avseende hantering av information i ett kommunikationsnät och ett kommunikationsnät innefattande en dylik anordning |
| US6452951B1 (en) * | 1996-11-29 | 2002-09-17 | Alcatel Usa Sourcing, L.P. | Apparatus and method of processing signaling bits of integrated services digital network signals |
-
2000
- 2000-04-14 WO PCT/DE2000/001179 patent/WO2000067517A1/de not_active Ceased
- 2000-04-14 EP EP00929290A patent/EP1174000A1/de not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO0067517A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000067517A1 (de) | 2000-11-09 |
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| 17Q | First examination report despatched |
Effective date: 20061019 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS S.P.A. |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
Effective date: 20091103 |