WO2004109979A1 - Procede de transmission de service dans un reseau a hierarchie numerique synchrone - Google Patents

Procede de transmission de service dans un reseau a hierarchie numerique synchrone Download PDF

Info

Publication number
WO2004109979A1
WO2004109979A1 PCT/CN2004/000525 CN2004000525W WO2004109979A1 WO 2004109979 A1 WO2004109979 A1 WO 2004109979A1 CN 2004000525 W CN2004000525 W CN 2004000525W WO 2004109979 A1 WO2004109979 A1 WO 2004109979A1
Authority
WO
WIPO (PCT)
Prior art keywords
virtual
service
pointer
concatenation
transmission
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.)
Ceased
Application number
PCT/CN2004/000525
Other languages
English (en)
Chinese (zh)
Other versions
WO2004109979A8 (fr
Inventor
Jingling Liao
Yue Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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 WO2004109979A1 publication Critical patent/WO2004109979A1/fr
Publication of WO2004109979A8 publication Critical patent/WO2004109979A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • H04J2203/0094—Virtual Concatenation

Definitions

  • adjacent concatenation can be used to transmit services, or virtual concatenation can be used to transmit services.
  • Adjacent concatenation in SDH optical transmission technology refers to: when a container (C) -n cannot meet the requirements of transmission services, concatenate adjacent Cn in the same synchronous transmission module (STM) -N into a whole
  • STM synchronous transmission module
  • the Cn-XC structure transmits services.
  • C-4 the European Telecommunications Standards Institute (ETSI) standard currently defines VC-4-4C and VC-4-16C for 4 and 16 virtual containers (VC) -4 concatenated adjacently, respectively. cascade.
  • ETSI European Telecommunications Standards Institute
  • This cascading method will result in the fact that when only one Cn is needed to realize the transmission service, multiple must be added. Taking C-4 as an example, the cascaded mode needs to use VC-4-4C's bandwidth to transmit services at least, so the waste of bandwidth is bound to be great.
  • a virtual large-structure VC-n-XV is formed for transmission.
  • each VC-n in the VC-n-XV can be transmitted in the same route, or it can be Transmission in different routes is mainly due to the virtual concatenated mapping mode, so that each VC-n in VC-n-XV has its own independent POH and pointer.
  • each VC-4 in VC-4-XV has its own POH. Therefore, when an SDH network adopting the virtual concatenation technology transmits services, it can first transmit the continuous bandwidth of VC-n-XV through each of these VC-n independently in different routes, and then transfer these VC- n is merged together to obtain continuous bandwidth, that is, these VC-n virtual cascades into VC-n-XV at the end of the transmission, so from the implementation point of view, the virtual cascade only requires the terminal device to have the function of virtual cascade.
  • the use of virtual concatenation can compensate for the delay, can correct the out-of-order, and can also increase or decrease the member channels of the virtual concatenation group losslessly through the Link Capability Adjustment Plan (LCAS) technology to meet the needs of bandwidth changes.
  • LCAS Link Capability Adjustment Plan
  • the virtual concatenation technology also has some disadvantages. Specifically, because each VC-n transmission route may be different, the pointers of each VC-n may be different, so the pointer needs to be adjusted, in order to avoid When the pointer is adjusted incorrectly, the terminal device generally buffers at least one frame.
  • the receiving end In the process of establishing a link, the receiving end will have a delay of 125us when receiving a link establishment frame, and there will be a delay of 125us when sending a response frame to the transmitting end, that is, there will be two 125us when the link is established. Frame delay. If the transmission speed of the service in the optical fiber is 2 x 10E5Km / s, the transmission time is 25Km at 125 ⁇ s, that is, the unidirectional transmission distance is 25Km. According to the relationship between ESCON service transmission distance and bandwidth in Figure 3, ESCON is at 25Km The service bandwidth is about 9MB / sec, which is only half of the normal bandwidth.
  • the step c further includes: setting a cache for adjusting the VC pointer in the obtained VC structure, and adjusting each VC pointer in the obtained VC structure through the cache.
  • the VC is VC-3, VC-4 or VC-12.
  • FIG. 1 is a structural diagram of VC-4-XC obtained during mapping in the case of cascading in the prior art
  • FIG. 2 is a structural diagram of VC-4-XV obtained during mapping in case of cascading in the prior art
  • Figure 3 is the relationship between ESCOM service transmission distance and bandwidth
  • Step 403 The receiving end device performs demapping by using a demapping manner of adjacent concatenation.
  • This solution is applicable to VC-3, VC-4, and VC-12.
  • the following uses VC4 as an example.
  • the three VC-4s are first mapped using the virtual cascade mapping method to form a virtual large structure VC-4-3V.
  • the difference from the virtual cascade is In this embodiment, the VC-4-3Vs are bundled together and transmitted through the same route to ensure that the transmission paths of the services are consistent. In this way, it can not only have the advantage that there is almost no delay in the arrival of a service when the adjacent technology is concatenated in the prior art, but also have the advantage that the existing technology can determine the VC-4 to be used according to the service when virtual concatenation.
  • the same route transmission method can be used to make each VC-4 corresponding to the service reach the receiver.
  • the time of the end device remains the same. Therefore, the management unit (AU) pointer of each VC-4 is also the same, that is, the same as the case of reaching the terminal in the case of cascading. Therefore, the demapping method in the case of adjacent cascading can be used, There is no need to cache like virtual concatenation.
  • each VC-4 after virtual concatenation has its own independent pointer. Therefore, the pointer in each VC-4 needs to be adjusted.
  • the transmission of each VC-4 by the same route makes the adjustment of the pointers of each VC-4 not macroscopically the problem of inconsistent pointers in each VC-4, but microscopically there may still be various VCs.
  • the adjustment difference between the pointers in -4 is different from each other. Because the pointer is adjusted once, the payload is filled or reduced by three bytes, so the biggest difference between the two VC-4s is 6 bytes. For the possible difference between pointers, you can borrow the method of virtual concatenation, that is, use the cache to resolve the difference in pointer adjustment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention concerne un procédé de transmission de service dans un réseau à hiérarchie numérique synchrone. Il consiste d'abord à déterminer le nombre de contenants virtuels demandés (VC) en fonction du service à transmettre. Les VC sont ensuite mappés dans une trame de VC de concaténation par l'adoption d'un procédé de mappage de concaténation virtuel et la trame de VC est transmise à l'unité réceptrice par le même chemin. L'unité réceptrice démappe la trame VC reçue par le procédé de démappage de déconcaténation. Ce procédé supprime le problème du gaspillage de largeur de bande dans les réseaux SDH transmettant le service, de l'augmentation de la demande au logiciel de réseau dans le réseau de transmission SDH et du long délai dans la concaténation virtuelle. Il confère également au réseau SDH l'avantage important de la concaténation adjacente et de la concaténation virtuelle dans la transmission du service.
PCT/CN2004/000525 2003-06-09 2004-05-24 Procede de transmission de service dans un reseau a hierarchie numerique synchrone Ceased WO2004109979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03143015.5 2003-06-09
CNB031430155A CN100490404C (zh) 2003-06-09 2003-06-09 一种实现同步数字传送网络中业务传输的方法

Publications (2)

Publication Number Publication Date
WO2004109979A1 true WO2004109979A1 (fr) 2004-12-16
WO2004109979A8 WO2004109979A8 (fr) 2005-03-10

Family

ID=33494610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/000525 Ceased WO2004109979A1 (fr) 2003-06-09 2004-05-24 Procede de transmission de service dans un reseau a hierarchie numerique synchrone

Country Status (2)

Country Link
CN (1) CN100490404C (fr)
WO (1) WO2004109979A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7734190B2 (en) 2005-02-24 2010-06-08 Futurewei Technologies, Inc. System and method for generating optical return-to-zero signals with differential bi-phase shift
US20060285542A1 (en) * 2005-06-20 2006-12-21 Futurewei Technologies, Inc. Method and system for automatically providing and adjusting optical channel concatenation
CN1984099B (zh) * 2006-05-30 2011-04-20 华为技术有限公司 相邻级联通道寄存器配置装置和方法
CN101087176B (zh) * 2006-06-05 2011-07-13 中兴通讯股份有限公司 一种实现虚级联恢复时写地址同步的方法
CN1968065B (zh) * 2006-06-23 2011-04-06 华为技术有限公司 一种微波通信业务传输方法及系统
CN114466087B (zh) * 2022-02-21 2023-05-30 重庆奥普泰通信技术有限公司 数据传输方法、装置、设备以及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1051057A2 (fr) * 1999-04-29 2000-11-08 Alcatel Transport de conteneurs concaténées dans une réseau de transmission synchrone
KR20020056422A (ko) * 2000-12-29 2002-07-10 엘지전자 주식회사 에스디에이치방식의 브이씨 매핑시스템 및 그 제어방법
US20030007519A1 (en) * 2001-06-28 2003-01-09 Chris Murton Methods and apparatus for transmitting synchronous data

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1051057A2 (fr) * 1999-04-29 2000-11-08 Alcatel Transport de conteneurs concaténées dans une réseau de transmission synchrone
KR20020056422A (ko) * 2000-12-29 2002-07-10 엘지전자 주식회사 에스디에이치방식의 브이씨 매핑시스템 및 그 제어방법
US20030007519A1 (en) * 2001-06-28 2003-01-09 Chris Murton Methods and apparatus for transmitting synchronous data

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MAO J.Z. ET AL.: "The virtual concatenation technology in OTN", STUDY ON OPTICAL COMMUNICATIONS, vol. 117, no. 03, 2003, pages 12 - 15 *

Also Published As

Publication number Publication date
CN100490404C (zh) 2009-05-20
CN1567867A (zh) 2005-01-19
WO2004109979A8 (fr) 2005-03-10

Similar Documents

Publication Publication Date Title
AU620744B2 (en) Method for transmitting a digital broadband signal in a tributary unit concatenation via a network of a synchronous digital multiplex hierarchy
CN101313507B (zh) 在无源光网络中传输同步数字体系业务的方法及装置
CN1051187C (zh) 同步数字系列数据传输系统
US12407438B2 (en) Signal frame processing method and related device
US7616558B2 (en) Reduction of the transport capacity of a virtual concatenation group
WO2004002076A1 (fr) Procede de mise en correspondance et de cessation de correspondance entre des paquets de donnees gigabit ethernet et une structure de trame sdh
US7085293B2 (en) Scaleable transport of TDM channels in a synchronous frame
US7239649B2 (en) Transmission system
EP1357688B1 (fr) Gestion du traffic dans un réseau synchrone de communication
CN100490404C (zh) 一种实现同步数字传送网络中业务传输的方法
WO2002017546A2 (fr) Systeme et procede de concatenation virtuelle de vt1.5s et sts-1s sur un reseau optique synchrone (sonet), sur un reseau hierarchique numerique synchrone (sdh) et sur un reseau a multiplexage de longueur d'ondes (wdm)
US6836486B2 (en) Switching of low order data structures using a high order switch
US7489710B2 (en) Stall need detection and associated stall mechanism for delay compensation in virtual concatenation applications
US7526197B2 (en) Utilizing the protecting bandwidth in a SONET network
EP1675293B1 (fr) Désactivation temporaire d'un membre d'un groupe à concaténation virtuelle
CN101243656A (zh) 在sonet中对链路容量调整方案(lcas)的硬件和软件组合实现
US7542484B2 (en) Managing payload specific latencies in a cross-connect system
EP1047214A2 (fr) Strutures de multiplexage dans des réseaux de communication
US7525977B1 (en) Control mechanism for mapping cells and packets
JP2001148672A (ja) 通信システム
CN101453668B (zh) 在无源光网络中传输同步数字体系业务的方法及装置
US7519064B1 (en) Virtual tributary processing using shared resources
EP2184870A1 (fr) Système et procédé de communication d'informations de gestion de réseau
WO2013029411A1 (fr) Procédé et dispositif de compensation de retard de concaténation virtuelle de granularité hybride
EP1598969A1 (fr) Schéma optimisé de réglage de capacité de liaison

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
CFP Corrected version of a pamphlet front page

Free format text: UNDER (72, 75) REPLACE "LIAO, JINGLING" IN CHINESE BY CORRECT NAME

122 Ep: pct application non-entry in european phase