Ota000005 Sdh Advanced Issue 1.0

SDH Advancedwww.huawei.com Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. References   SDH Principle Manual ITU-T G.701, G.702, G.707 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page1 Objectives  Upon completion of this course, you will be able to:  Describe functions of the SDH functional blocks Describe corresponding alarms in every functional blocks  Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page2 Contents 1. SDH Functional Blocks 2. SDH alarms Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page3 Logical Functional Block in SDH Equipment w STM A SPI TTF B RST C MST D MSP E MSA F HOI 140Mb/s G.703 M PPI L LPA LOI G HPT F HPC HOA 2Mb/s 34Mb/s G.703 K PPI J LPA I LPT H LPC H HPA G HPT F Note: Taking 2Mb/s as example OHA OHA Interface SEMF MCF N D1—D3 Q Interface F Interface P D4—D12 SETPI SETS External Synchronous Signal Interface Page4 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. SPI Functional Block  SPI: Synchronous Physical Interface  SPI Implements interface function O/E, extracts timing signal from STM-N Receiving AB Transmitting BA   Monitors corresponding alarm O/E Extract Timing Signal E/O Receive Fail R-LOS Page5 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. RST Functional Block  RST: Regenerator Section Termination  Receiving BC Processes RS overhead Processes RSOH in Rx direction  R-LOS Put all “1” at C Framing A1, A2  Writes RSOH in Tx direction Fail R-OOF, R-LOF All “1” at C Normal Unscramble Process E1, D1~D3 Verify B1 RS-BBE Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page6 RST Functional Block (Cont.) Transmitting CB Writes RSOH Scrambles STM-N frame Calculates B1 Add E1 D1-D3 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page7 MST Functional Block  MST: Multiplex Section Termination   Processes MSOH Receiving CD Extract APS Detect K2 (b6-b8) Detect B2 K1, K2 (b1-b5) 110 MS-RDI 111 MS-AIS All “1” at D Abnormal MS-BBE Overflow MS-EXC (B2) All “1” at D Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page8 MST Functional Block (Cont.) Transmitting D→C Write MSOH Receiving MS-BBE Return M1MS-REI Receiving MS-AIS Return K2110 MS-RDI Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page9 MST Functional Block (Cont.)  Concept of regeneration section (RS) and multiplexing section (MS): MST RST SPI SPI RST MST RS (regenerator section) MS (multiplex section) Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page10 MSP Functional Block  MSP: Multiplex Section Protection   Implements MS layer protection switch  Switch conditions: R-LOS, R-LOF, MS-AIS alarm  Main Signal Path M S A M S P MST MST M S P M S A MST MST Stand-by Signal Path Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page11 MSA Functional Block  MSA: Multiplex Section Adaptation  Receiving EF Implements AUG to VC-4 or VC-4 to AUG conversion De-interleaved AUG  N×AU-4 Read AU-PTR H1H2H3 are all “1” AU-AIS All “1” at F Invalid pointer or 8 NDF AU-LOP All “1” at F Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page12 MSA Functional Block (Cont.) 1 1 261 Transmitting FE VC-4 9 Writes AU-PTR Byte interleaved N×AU- 4  AUG Signal frame structure at Point F Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page13 HPC Functional Block  HPC: High-Order Path Cross-connect  Cross-connect Matrix control & Implementation only for VC-4  Only chooses the route, does not process signals Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page14 HPT Functional Block  HPT: High-Order Path Termination  Processes HO-POH in VC-4 VC-4 Real-Time monitoring Receiving FG  Verify B3 Invalid  HP-BBE Detect J1 Mismatch  HP-TIM Detect C2 Mismatch HP-SLM  00H: HP-UNEQ Transmit H4 to HPA All “1” at G All “1” at G Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page15 HPT Functional Block (Cont.) Transmitting GF Receiving HP-TIM, HP-SLM, HP-UNEQ Return HP-RDI (G1) Write HO-POH Receiving HP-BBE Return HP-REI (G1) Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page16 HPA Functional Block  HPA: High order Path Adaptation  Receiving GH Implements C4 to VC12 conversion De-interleaved C4  63XTU-12 Read TU-PTR V1V2V3 are all “1” TU-AIS All “1” at H Invalid pointer or 8 NDF TU-LOP All “1” at H Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page17 HPA Functional Block (Cont.) Transmitting HG Write Pointer TU-PTR, VC-12TU12 Byte Interleave TU12C-4 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page18 LPT Functional Block  LPT: Low-Order Path Adaptation  Real-Time Monitoring and processing the overhead of VC-12 LPT Receiving HI Detect V5 LP-BBE LP-SLM, LP-UNEQ Transmitting IH Write LO-POH Receive LP-BBE, Return LP-REI Receive LP-SLM, UNEQ, Return LP-RDI Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page19 LPC, LPA Functional Block  LPC: Low-Order Path Connection  For VC-12 & VC-3 Cross-connect Matrix Only chooses route, does not process signals   LPA: Low-Order Path Adaptation  Implements pack/unpack and restores original signal PDH <---> C  Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page20 PPI Functional Block  PPI: PDH Physical Interface  PPI Extract PDH tributary signal timing Receiving LM JK Transmitting ML KJ  Code pattern conversion Interface between device and PDH line  Code pattern conversion Code pattern No input signal conversion T-ALOS, Extract timing EX-TLOS Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page21 Auxiliary Functional Blocks  SEMF: Synchronous Equipment Management Function  Monitoring center of the whole equipment Implements OAM of local equipment and other equipment   MCF: Message Communication Function  Provides D1~D3 Interface for communication Implements network management termination interface to equipment: f/Qx  Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page22 Auxiliary Functional Blocks (Cont.)  SETS: Synchronous Equipment Timing Source  Provides local timing clock signal to other functional blocks Provides timing clock signal to other equipment   SETPI: Synchronous Equipment Timing Physical Interface  Provides external interface of SETS External timing clock signal and output timing clock signal   OHA: Overhead Access  Processes order wire messages E1, E2, F1 Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page23 Contents 1. SDH Functional Blocks 2. SDH alarms Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page24 Diagram of Alarm Generation Frame synchronizer& RS overhead processor (RST) STM-N Optical Signal A1,A2 B1 LOS LOF B1 Err “1” MS overhead processor (MST) AIS MS_AIS B2 Err MS_REI MS_RDI “1” Pointer processor& HP overhead processor (MSA, HPT) AIS AU_AIS K2 B2 M1 K2 H1,H2 AU_LOP H1,H2 HP_TIM J1 C2 HP_UNEQ HP_SLM C2 HP_LOM H4 B3 Err B3 HP_REI G1 G1 HP_RDI “1” H P C Downlink signal flow Signal transfer point (Insert down all "1"s signal) Alarm report or return Alarm termination point (Report to SEMF) Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page25 Diagram of Alarm Generation (Cont.) High Order Path Adaptation& Low Order Path Termination (HPA, LPT) L P C LP_SLM LP_TFIF O Low Order Path Adaptation (LPA) E1_AIS PDH Physical Interface (PPI) T_ALOS All “1” V5 E1 Interface L P C V5 LP_UNEQ J2 LP_TIM V1,V2TU_LOP TU_AIS V1,V2 HP_LOM H4 LP_RDI V5 E1_AIS V5 BIP 2 LP_REI All “1” LP_RFIFO E1 Interface Downlink signal flow Signal transfer point (Insert down all "1"s signal) Alarm report or return Alarm termination point (Report to SEMF) Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page26 Suppression Correlation among Alarms R_LOS A1, A2 Bytes R_LOF R_OOF J0_MM RSOH, MSOH (Except A1,A2) MS_AIS B1_EXEC B2_EXEC MS_RDI AU_AIS AU_LOP B1_SD B2_SD B3_EXEC HP_TIM HP_SLM HP_LOM HP_UN EQ BIP_EXEC HP_RDI B3_SD TU_AIS TU_LOP LP_UNEQ A B A suppress B LP_TIM LP_SLM BIP_SD LP_RDI Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page27 Questions  A E1 service from STM-16 to E1 electrical interface, how many functional blocks are involved in the procedure? What the functions of them?  In which functional block, alarm “R_LOS” (receiving power loss) will be detected? Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page28 Thank you www.huawei.com