CA2490792A1 - Transparent flexible concatenation - Google Patents
Transparent flexible concatenation Download PDFInfo
- Publication number
- CA2490792A1 CA2490792A1 CA002490792A CA2490792A CA2490792A1 CA 2490792 A1 CA2490792 A1 CA 2490792A1 CA 002490792 A CA002490792 A CA 002490792A CA 2490792 A CA2490792 A CA 2490792A CA 2490792 A1 CA2490792 A1 CA 2490792A1
- Authority
- CA
- Canada
- Prior art keywords
- concatenation
- concatenated
- sts
- frames
- pointer
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims 13
- 239000000872 buffer Substances 0.000 claims 6
- 102100040338 Ubiquitin-associated and SH3 domain-containing protein B Human genes 0.000 claims 3
- 101710143616 Ubiquitin-associated and SH3 domain-containing protein B Proteins 0.000 claims 3
- RGNPBRKPHBKNKX-UHFFFAOYSA-N hexaflumuron Chemical compound C1=C(Cl)C(OC(F)(F)C(F)F)=C(Cl)C=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F RGNPBRKPHBKNKX-UHFFFAOYSA-N 0.000 claims 3
Classifications
-
- 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
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
- H04J3/0623—Synchronous multiplexing systems, e.g. synchronous digital hierarchy/synchronous optical network (SDH/SONET), synchronisation with a pointer process
-
- 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
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0003—Switching fabrics, e.g. transport network, control network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0028—Local loop
- H04J2203/003—Medium of transmission, e.g. fibre, cable, radio
- H04J2203/0032—Fibre
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0089—Multiplexing, e.g. coding, scrambling, SONET
- H04J2203/0091—Time slot assignment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0089—Multiplexing, e.g. coding, scrambling, SONET
- H04J2203/0096—Serial Concatenation
Abstract
Data frames are converted to a format suitable for transparent, flexible concatenated transport such that a network element not supporting flexible concatenation (2605) may transparently pass the data frames. Flexible concatenation involves nonstandard data frames such as an STS-4c or an STS-Nc (2614) in which the time slots do not occupy rigidly defined contiguous time slots. The pointer from the parent time slot is used for each of the child time slots and the concatenation identifier is set to indicate no concatenation. In this way, the concatenated data appears to be a series of conventional STS-1s such that pointer processing may be successfully accomplished even by a network element not capable of handling non-standard concatenations. A downstream receive framer (2619) reconstructs the original STS-Nc based on the N STS-1s and a concatenation table.
Claims (22)
1. A method for processing concatenated frames, comprising:
receiving a concatenated frame having a parent timeslot with a pointer and at least one child timeslot with a concatenation identifier;
breaking the concatenated frame into a plurality of non-concatenated frames each of which has a pointer and none of which has a concatenation identifier; and transmitting the plurality of non-concatenated frames.
receiving a concatenated frame having a parent timeslot with a pointer and at least one child timeslot with a concatenation identifier;
breaking the concatenated frame into a plurality of non-concatenated frames each of which has a pointer and none of which has a concatenation identifier; and transmitting the plurality of non-concatenated frames.
2. The method according to claim 1, further comprising:
replacing the concatenation identifier for each of the child timeslots in the non-concatenated frames with the pointer from the parent timeslot.
replacing the concatenation identifier for each of the child timeslots in the non-concatenated frames with the pointer from the parent timeslot.
3. The method according to claim 1, wherein the concatenated frame and the plurality of non-concatenated frames are compatible with SONET or SDH standards.
4. The method according to claim 1, wherein the concatenated frame is in the form of an STS-Nc, the plurality of non-concatenated frames is in the form of an STS-1 and the plurality is equal to N.
5. The method according to claim 1, wherein the concatenated frame utilizes non-standard concatenation, said breaking step breaking the non-standard concatenated frame into a plurality of non-concatenated frames that may be transparently processed by a network element receiving the non-concatenated frames transmitted by said transmitting step.
6. The method according to claim 5, wherein the non-standard concatenation includes non-standard concatenation timeslots or groupings.
7. The method according to claim 5, wherein the non-standard concatenation includes STS-Nc or SDH-Nc where N is not an integer multiple of three.
8. The method according to claim l, further comprising:
sharing concatenation table information with a downstream network element, the concatenation table information identifying a concatenation structure of the concatenated frame received by said receiving step.
sharing concatenation table information with a downstream network element, the concatenation table information identifying a concatenation structure of the concatenated frame received by said receiving step.
9. An apparatus for processing concatenated frames, comprising:
a plurality of buffers at least some of which store a corresponding payload of a concatenated frame, the concatenated frame including a parent timeslot having a pointer and at least one child timeslot having a concatenation identifier; and a pointer generation circuit operatively connected to said buffers, said pointer generation circuit adapted to replace the concatenation identifier for each of the child timeslots with the pointer from the parent timeslot.
a plurality of buffers at least some of which store a corresponding payload of a concatenated frame, the concatenated frame including a parent timeslot having a pointer and at least one child timeslot having a concatenation identifier; and a pointer generation circuit operatively connected to said buffers, said pointer generation circuit adapted to replace the concatenation identifier for each of the child timeslots with the pointer from the parent timeslot.
10. The apparatus according to claim 9, further comprising:
a transport overhead multiplexer operatively connected to said pointer generation circuit, said transport overhead multiplexer combining transport overhead information with the payloads to construct a plurality of non-concatenated frames each of which has a pointer and none of which has a concatenation identifier.
a transport overhead multiplexer operatively connected to said pointer generation circuit, said transport overhead multiplexer combining transport overhead information with the payloads to construct a plurality of non-concatenated frames each of which has a pointer and none of which has a concatenation identifier.
11. The apparatus according to claim 9, said buffer including a plurality of FIFO buffers at least some of which store a corresponding payload of the concatenated frame,
12. The apparatus according to claim 9, wherein the concatenated frame and the plurality of non-concatenated frames are compatible with SONET or SDH standards.
13. The apparatus according to claim 9, wherein the concatenated frame is in the form of an STS-Nc, the plurality of non-concatenated frames is in the form of an STS-1 and the plurality is equal to N.
14. The apparatus according to claim 9, wherein the concatenated frame utilizes non-standard concatenation.
15. The apparatus according to claim 9, wherein the concatenated frame utilizes non-standard concatenation and includes non-standard concatenation timeslots or groupings.
16. The apparatus according to claim 9, wherein the non-standard concatenation includes STS-Nc or SDH-Nc where N is not an integer multiple of three.
17. A framer, comprising:
a transmit framer circuit including a plurality of buffers at least some of which store a corresponding payload of a concatenated frame, the concatenated frame including a parent timeslot having a pointer and at least one child timeslot having a concatenation identifier, and a pointer generation circuit operatively connected to said buffers, said pointer generation circuit adapted to replace the concatenation identifier for each of the child timeslots with the pointer from the parent timeslot; and a receive framer circuit receiving a plurality of transparently concatenated frames including N frames each having a pointer, said receive framer circuit including:
a receive pointer interpreter circuit for parsing each of the transparently concatenated frames according to the pointers, and a receive concatenation table operatively connected to said receive pointer interpreter circuit, said receive concatenation table storing concatenation information for the plurality of transparently concatenated frames, said receive framer circuit re-concatenating the transparently concatenated frames according to the concatenation information stored by said receive concatenation table.
a transmit framer circuit including a plurality of buffers at least some of which store a corresponding payload of a concatenated frame, the concatenated frame including a parent timeslot having a pointer and at least one child timeslot having a concatenation identifier, and a pointer generation circuit operatively connected to said buffers, said pointer generation circuit adapted to replace the concatenation identifier for each of the child timeslots with the pointer from the parent timeslot; and a receive framer circuit receiving a plurality of transparently concatenated frames including N frames each having a pointer, said receive framer circuit including:
a receive pointer interpreter circuit for parsing each of the transparently concatenated frames according to the pointers, and a receive concatenation table operatively connected to said receive pointer interpreter circuit, said receive concatenation table storing concatenation information for the plurality of transparently concatenated frames, said receive framer circuit re-concatenating the transparently concatenated frames according to the concatenation information stored by said receive concatenation table.
18. A method for performing transparent flexible concatenation, comprising:
converting STS-Nc signals in a SONET/SDH frame into N STS-1s;
transmitting the converted STS-Nc signal as the N STS-1s; and reconstructing the STS-Nc from the N STS-1s.
converting STS-Nc signals in a SONET/SDH frame into N STS-1s;
transmitting the converted STS-Nc signal as the N STS-1s; and reconstructing the STS-Nc from the N STS-1s.
19. A method, comprising:
receiving a plurality of transparently concatenated frames including N frames each having a pointer;
parsing each of the transparently concatenated frames according to the pointers;
accessing a receive concatenation table to re-concatenate the transparently concatenated frames.
receiving a plurality of transparently concatenated frames including N frames each having a pointer;
parsing each of the transparently concatenated frames according to the pointers;
accessing a receive concatenation table to re-concatenate the transparently concatenated frames.
20. The method according to claim 19, wherein the re-concatenated frame is in the form of an STS-Nc, the transparently concatenated frames are in the form of an STS-1 and the plurality is equal to N.
21. The method according to claim 19, wherein the re-concatenated frame utilizes non-standard concatenation including non-standard concatenation timeslots or groupings.
22. The method according to claim 21, wherein the non-standard concatenation includes STS-Nc or SDH-Nc where N is not an integer multiple of three.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/185,330 | 2002-06-28 | ||
| US10/185,330 US7173930B2 (en) | 1999-10-26 | 2002-06-28 | Transparent flexible concatenation |
| PCT/US2003/020174 WO2004004234A1 (en) | 2002-06-28 | 2003-06-27 | Transparent flexible concatenation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2490792A1 true CA2490792A1 (en) | 2004-01-08 |
| CA2490792C CA2490792C (en) | 2014-08-12 |
Family
ID=29999256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2490792A Expired - Lifetime CA2490792C (en) | 2002-06-28 | 2003-06-27 | Transparent flexible concatenation |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7173930B2 (en) |
| EP (1) | EP1518366B1 (en) |
| JP (1) | JP2005531988A (en) |
| AT (1) | ATE442719T1 (en) |
| AU (1) | AU2003256312A1 (en) |
| CA (1) | CA2490792C (en) |
| DE (1) | DE60329181D1 (en) |
| WO (1) | WO2004004234A1 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4428488B2 (en) * | 1999-05-31 | 2010-03-10 | 株式会社ターボデータラボラトリー | Tabular data combination method, storage medium storing program for realizing the above method, and apparatus for combining tabular data |
| US7173930B2 (en) | 1999-10-26 | 2007-02-06 | Ciena Corporation | Transparent flexible concatenation |
| US6934248B1 (en) * | 2000-07-20 | 2005-08-23 | Nortel Networks Limited | Apparatus and method for optical communication protection |
| EP1191724A3 (en) * | 2000-09-26 | 2004-12-29 | Alcatel | Method for transmitting opticall SDH or SONET signals |
| US6993047B1 (en) * | 2000-12-30 | 2006-01-31 | Redback Networks Inc. | Any size and location of concatenated packet data across SONET frames in a SONET signal |
| US7206323B1 (en) * | 2001-03-06 | 2007-04-17 | Conexant Systems, Inc. | Interfacing 622.08 MHz line interface to a 77.76 MHz SONET framer |
| JP3860992B2 (en) * | 2001-11-09 | 2006-12-20 | 株式会社ターボデータラボラトリー | Data combination / presentation method and data combination / presentation program |
| US7197031B2 (en) * | 2001-11-26 | 2007-03-27 | Nortel Networks Limited | Cross-connection of high bandwidth signal traffic across independent parallel shelves |
| US7362771B1 (en) | 2002-05-30 | 2008-04-22 | Marvell International Ltd. | Reduced latency FIFO |
| JP3972737B2 (en) * | 2002-06-05 | 2007-09-05 | 日本電気株式会社 | Digital transmission system and digital transmission method used therefor |
| US7447239B2 (en) * | 2002-09-19 | 2008-11-04 | Nortel Networks Limited | Transmission path monitoring |
| CN1241361C (en) * | 2002-09-23 | 2006-02-08 | 华为技术有限公司 | Transparent transmission method of mutiple manufacturer SDH device management information |
| US7349387B2 (en) * | 2002-09-27 | 2008-03-25 | Wu Ephrem C | Digital cross-connect |
| US8160109B2 (en) * | 2002-11-01 | 2012-04-17 | Broadcom Corporation | Method and system for synchronizing a transceiver and a downstream device in an optical transmission network |
| US20050169167A1 (en) * | 2002-11-29 | 2005-08-04 | Hideaki Tazawa | Line format setting method and communication apparatus using the line format setting method |
| WO2005018124A1 (en) * | 2003-08-15 | 2005-02-24 | Xyratex Technology Limited | A data merge unit, a method of producing an interleaved data stream, a network analyser and a method of analysing a network |
| DE60322063D1 (en) * | 2003-10-14 | 2008-08-21 | Alcatel Lucent | Improved pointer processor management with concatenated payload in SDH or SONET frames |
| US20050094654A1 (en) * | 2003-10-31 | 2005-05-05 | Oz Weisler | Switching matrix |
| US7656891B1 (en) * | 2004-08-04 | 2010-02-02 | Intel Corporation | Method and apparatus enabling concurrent processing of contiguously and virtually concatenated payloads |
| US9497109B2 (en) * | 2005-02-11 | 2016-11-15 | Hewlett Packard Enterprise Development Lp | Switching mesh with user-configurable paths |
| US7792108B2 (en) * | 2005-04-08 | 2010-09-07 | Interdigital Technology Corporation | Method and apparatus for transmitting concatenated frames in a wireless communication system |
| US7466013B2 (en) * | 2005-12-15 | 2008-12-16 | Etron Technology, Inc. | Semiconductor die structure featuring a triple pad organization |
| US8203934B2 (en) * | 2006-06-02 | 2012-06-19 | Cisco Technology, Inc. | Transparent automatic protection switching for a chassis deployment |
| US7656791B1 (en) * | 2006-07-19 | 2010-02-02 | Pmc-Sierra, Inc. | Systems and methods for hitless equipment protection |
| WO2008111178A1 (en) * | 2007-03-13 | 2008-09-18 | Fujitsu Limited | Transmission apparatus and concatenation determining method |
| JP5418086B2 (en) * | 2009-09-09 | 2014-02-19 | 富士通株式会社 | Transmission apparatus and signal transmission method |
| JP5471627B2 (en) * | 2010-03-09 | 2014-04-16 | 富士通株式会社 | Network device, edge router and packet communication system |
| US8553707B2 (en) | 2011-03-01 | 2013-10-08 | Ciena Corporation | Administrative boundaries in single or multiple domain optical networks |
| JP6299119B2 (en) * | 2013-09-02 | 2018-03-28 | 富士通株式会社 | Transmission apparatus, transmission system, and transmission method |
| US10075259B2 (en) * | 2016-01-06 | 2018-09-11 | Infinera Corporation | Systems and methods of time slot allocation for shared mesh protection on bundled links |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257261A (en) * | 1990-07-27 | 1993-10-26 | Transwitch Corporation | Methods and apparatus for concatenating a plurality of lower level SONET signals into higher level sonet signals |
| US5455832A (en) * | 1993-12-17 | 1995-10-03 | Bell Communications Research, Inc. | Method and system for testing a sonet network element |
| US6262975B1 (en) * | 1998-07-09 | 2001-07-17 | Lucent Technologies Inc. | Method of auditing cross-connections related to concatenated signals in a synchronous optical network |
| US6765928B1 (en) * | 1998-09-02 | 2004-07-20 | Cisco Technology, Inc. | Method and apparatus for transceiving multiple services data simultaneously over SONET/SDH |
| US6671271B1 (en) * | 1999-06-03 | 2003-12-30 | Fujitsu Network Communications, Inc. | Sonet synchronous payload envelope pointer control system |
| US6317439B1 (en) * | 1999-06-03 | 2001-11-13 | Fujitsu Network Communications, Inc. | Architecture for a SONET line unit including optical transceiver, cross-connect and synchronization subsystem |
| US7002986B1 (en) * | 1999-07-08 | 2006-02-21 | Nortel Networks Limited | Mapping arbitrary signals into SONET |
| US7016357B1 (en) * | 1999-10-26 | 2006-03-21 | Ciena Corporation | Methods and apparatus for arbitrary concatenation in a switch |
| US7173930B2 (en) | 1999-10-26 | 2007-02-06 | Ciena Corporation | Transparent flexible concatenation |
-
2002
- 2002-06-28 US US10/185,330 patent/US7173930B2/en not_active Expired - Lifetime
-
2003
- 2003-06-27 CA CA2490792A patent/CA2490792C/en not_active Expired - Lifetime
- 2003-06-27 AU AU2003256312A patent/AU2003256312A1/en not_active Abandoned
- 2003-06-27 EP EP03762075A patent/EP1518366B1/en not_active Expired - Lifetime
- 2003-06-27 AT AT03762075T patent/ATE442719T1/en not_active IP Right Cessation
- 2003-06-27 WO PCT/US2003/020174 patent/WO2004004234A1/en active Application Filing
- 2003-06-27 JP JP2004517879A patent/JP2005531988A/en active Pending
- 2003-06-27 DE DE60329181T patent/DE60329181D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1518366B1 (en) | 2009-09-09 |
| EP1518366A1 (en) | 2005-03-30 |
| AU2003256312A1 (en) | 2004-01-19 |
| US7173930B2 (en) | 2007-02-06 |
| DE60329181D1 (en) | 2009-10-22 |
| ATE442719T1 (en) | 2009-09-15 |
| CA2490792C (en) | 2014-08-12 |
| US20030189925A1 (en) | 2003-10-09 |
| WO2004004234A1 (en) | 2004-01-08 |
| EP1518366A4 (en) | 2008-05-21 |
| JP2005531988A (en) | 2005-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2490792A1 (en) | Transparent flexible concatenation | |
| JP3429308B2 (en) | Method of disassembling and assembling a frame structure including a pointer | |
| CA2521514C (en) | Multi-rate, multi-protocol, multi-port line interface for a multiservice switching platform | |
| US7920604B2 (en) | Data transmission in an SDH network | |
| US20030112833A1 (en) | Method and apparatus for transmitting multiple signal, method and apparatus for receiving multiple signal, multiple signal transmission method and multiplexer/demultiplexer | |
| US6603776B1 (en) | System for efficient broadband data payload conversion | |
| EP1655864B1 (en) | Apparatus and method for carrying out integration of multi-ports traffics | |
| US5544172A (en) | Method for the digital transmission of data | |
| US7177328B2 (en) | Cross-connect switch for synchronous network | |
| US5265095A (en) | Method for inputting signals into and outputting signals out from subareas of the auxiliary signals of transport modules of a synchronous digital signal hierarchy | |
| JP3974855B2 (en) | Data transmission device | |
| JPH1028102A (en) | Pointer processor in sdh transmitting system | |
| EP1537694B1 (en) | Synchronous transmission network node | |
| US6836486B2 (en) | Switching of low order data structures using a high order switch | |
| CA2347555A1 (en) | Hyper-concatenation across independent pointer processors | |
| US5579310A (en) | Method for switching through digital signals | |
| US7394828B1 (en) | Data format conversion for virtual concatenation processing | |
| KR0153688B1 (en) | A tu aligning apparatus using dram in synchornous transmission system | |
| JP2867943B2 (en) | Delay variation absorption method for SDH transmission system | |
| KR100271311B1 (en) | Pointer processing method of administrative unit and tributary unit | |
| JP3109165B2 (en) | Data transmission method | |
| Nakano et al. | Signal processing for SDH digital cross-connect system | |
| KR100201332B1 (en) | A local loop back circuit of vc1 in synchronous multiplexer | |
| KR100205014B1 (en) | Device for implementing the function of the vc-11 and tug-2 in the sdh | |
| JP2920650B2 (en) | Information transmission method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20230627 |