Ota000005 Sdh Advanced Issue 1.0
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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 AB Transmitting BA 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 BC 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 CB 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 CD 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 M1MS-REI Receiving MS-AIS Return K2110 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 EF 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 FE 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 FG 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 GF 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 GH 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 HG Write Pointer TU-PTR, VC-12TU12 Byte Interleave TU12C-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 HI Detect V5 LP-BBE LP-SLM, LP-UNEQ Transmitting IH 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 LM JK Transmitting ML KJ 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
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