ZXMW NR8250 Product Description 6/7/8/8.5/11/15/18/23/38 GHz ZXMW NR8250 Product Description ZXMW NR8250 Product Description Version V1.00_01 Date 2011-02-21 Author Zhu Linlin Approved By Remarks First English revision © 2011 ZTE Corporation. All rights reserved. ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE. Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice. ZTE Confidential Proprietary © 2011 ZTE CORPORATION. All rights reserved. I ZXMW NR8250 Product Description TABLE OF CONTENTS 1 1.1 1.2 1.3 Overview ......................................................................................................... 1 About ZXMW NR8250 ...................................................................................... 1 Product Appearance ......................................................................................... 1 Network Applications ........................................................................................ 3 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Features .......................................................................................................... 4 Hybrid & Native Microwave Transmission Solution ........................................... 4 Service Cross Connect Function....................................................................... 4 Six-Directions Aggregation Node ...................................................................... 4 ACM – Adaptive Coding & Modulation .............................................................. 5 Ethernet Switching ............................................................................................ 5 QoS – Quality of Service .................................................................................. 6 SNCP Protection for TDM ................................................................................. 6 RSTP/STP ........................................................................................................ 6 ATPC – Automatic Transmitter Power Control .................................................. 7 3 3.1 3.2 3.2.1 3.2.2 3.2.3 Hardware Description ..................................................................................... 7 IDU ................................................................................................................... 7 ODU ................................................................................................................. 7 Appearance ...................................................................................................... 8 Interface Description ....................................................................................... 10 Installation Methods ........................................................................................ 13 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.6 4.6.1 4.6.2 4.6.3 Boards ........................................................................................................... 16 Board Layout .................................................................................................. 16 RCUA ............................................................................................................. 17 Function Description ....................................................................................... 17 Interface Description ....................................................................................... 17 LED Indicator Description ............................................................................... 18 Block Diagram ................................................................................................ 19 RMUB ............................................................................................................. 19 Function Description ....................................................................................... 19 Interface Description ....................................................................................... 20 LED Indicator Description ............................................................................... 20 Block Diagram ................................................................................................ 21 RTUA (16 x E1) .............................................................................................. 22 Function Description ....................................................................................... 22 Interface Description ....................................................................................... 22 LED Indicator Description ............................................................................... 23 Block Diagram ................................................................................................ 23 RTUB (8 x E1 + 1 x STM-1 + 1 x STM-1/4)..................................................... 24 Function Description ....................................................................................... 24 Interface Description ....................................................................................... 25 LED Indicator Description ............................................................................... 25 Block Diagram ................................................................................................ 26 RTUMO (2 x GbE(O) / 4 x FE) ........................................................................ 26 Function Description ....................................................................................... 26 Interface Description ....................................................................................... 27 LED Indicator Description ............................................................................... 27 ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. II ZXMW NR8250 Product Description 4.6.4 4.7 4.7.1 4.7.2 4.7.3 4.7.4 4.8 4.8.1 4.8.2 4.8.3 4.9 4.9.1 4.9.2 4.9.3 4.10 4.10.1 4.10.2 Block Diagram ................................................................................................ 27 RTUME (2 x GbE(E) / 4 x FE) ......................................................................... 28 Function Description ....................................................................................... 28 Interface Description ....................................................................................... 29 LED Indicator Description ............................................................................... 29 Block Diagram ................................................................................................ 29 PM .................................................................................................................. 30 Function Description ....................................................................................... 30 Interface Description ....................................................................................... 31 LED Indicator Description ............................................................................... 31 RPUA ............................................................................................................. 32 Function Description ....................................................................................... 32 Interface Description ....................................................................................... 32 LED Indicator Description ............................................................................... 32 RFAA .............................................................................................................. 33 Function Description ....................................................................................... 33 LED Indicator Description ............................................................................... 34 5 5.1 Network Management System ..................................................................... 35 WEB LMT ....................................................................................................... 35 6 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 6.4.1 6.4.2 6.5 6.5.1 6.5.2 6.5.3 6.5.4 Technical Parameters................................................................................... 37 Physical Parameters ....................................................................................... 37 Dimension and Weight.................................................................................... 37 Power Voltage ................................................................................................ 38 Temperature and Humidity ............................................................................. 38 Power Consumption ....................................................................................... 38 IDU Parameters .............................................................................................. 38 Channel Bandwidth......................................................................................... 39 Modulation Mode ............................................................................................ 39 System Capacity............................................................................................. 39 Interface Parameters ...................................................................................... 40 ODU Parameters ............................................................................................ 40 Frequency Parameters ................................................................................... 40 Tx/Rx Spacing ................................................................................................ 40 Intermediate Frequency (IF) Signals ............................................................... 41 Interface Parameters ...................................................................................... 42 Power Parameters .......................................................................................... 42 Transmit Power .............................................................................................. 42 Receive Power ............................................................................................... 43 Reliability Parameters ..................................................................................... 44 Standard Compliance ..................................................................................... 44 Fault Tolerance Parameters ........................................................................... 45 RSSI Parameters ............................................................................................ 45 Anti-Continuous-Wave Interference Parameters ............................................. 45 7 7.1 7.1.1 7.1.2 7.1.3 Network Configuration ................................................................................. 47 N x (1+0) Network Configuration ..................................................................... 47 Configuration Requirements (Single Site) ....................................................... 47 Configuration Diagram .................................................................................... 48 Configuration Principle.................................................................................... 48 ZTE Confidential Proprietary © 2011 ZTE CORPORATION. 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III ZXMW NR8250 Product Description 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.3 7.3.1 7.3.2 7.3.3 7.3.4 7.4 7.4.1 7.4.2 7.4.3 7.4.4 7.5 7.5.1 7.5.2 7.5.3 7.6 7.6.1 7.6.2 7.6.3 7.7 7.7.1 7.7.2 7.7.3 N x (1+1 HSB) Configuration .......................................................................... 48 Configuration Requirements (Single Site) ....................................................... 48 Configuration Diagram .................................................................................... 49 Configuration Principle.................................................................................... 49 Switchover Principle ....................................................................................... 50 N x (1+1 SD) Configuration ............................................................................. 51 Configuration Requirements (Single Site) ....................................................... 51 Configuration Diagram .................................................................................... 51 Configuration Principle.................................................................................... 52 Switchover Principle ....................................................................................... 52 N x (1+1 FD) Configuration ............................................................................. 53 Configuration Requirements (Single Site) ....................................................... 53 Configuration Diagram .................................................................................... 54 Configuration Principle.................................................................................... 54 Switchover Principle ....................................................................................... 55 SNCP Ring Networking .................................................................................. 56 Configuration Requirements (Single Site) ....................................................... 56 Networking Diagram ....................................................................................... 56 Networking Principle ....................................................................................... 57 RSTP Ring Networking ................................................................................... 58 Configuration Requirements (Single Site) ....................................................... 58 Networking Diagram ....................................................................................... 58 Networking Principle ....................................................................................... 59 Nodal Networking ........................................................................................... 60 Configuration Requirements (Single Site) ....................................................... 60 Networking Diagram ....................................................................................... 60 Networking Principle ....................................................................................... 61 8 Abbreviations................................................................................................ 63 ZTE Confidential Proprietary 2011 ZTE Corporation. 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IV ZXMW NR8250 Product Description FIGURES Figure 1-1 NR8250 IDU .......................................................................................................... 2 Figure 1-2 6 ~ 11 GHz ODU ................................................................................................... 2 Figure 1-3 15 ~ 38 GHz ODU ................................................................................................. 2 Figure 1-4 Example of Link Aggregation Solution ................................................................... 3 Figure 3-1 6 ~ 11 GHz ODU (Front View) ............................................................................... 8 Figure 3-2 6/7/8/8.5 GHz ODU (Rear View) ............................................................................ 8 Figure 3-3 11 GHz ODU (Rear View) ...................................................................................... 9 Figure 3-4 15 ~ 38 GHz ODU (Front View) ............................................................................. 9 Figure 3-5 15 ~ 38 GHz ODU (Rear View) ............................................................................ 10 Figure 3-6 15 ~ 38 GHz ODU (Bottom View) ........................................................................ 10 Figure 3-7 6 ~ 11 GHz ODU Interfaces ................................................................................. 11 Figure 3-8 15 GHz ~ 38 GHz ODU Interfaces ....................................................................... 12 Figure 4-1 NR8250 IDU Board Layout ................................................................................. 16 Figure 4-2 RCUA Board ........................................................................................................ 17 Figure 4-3 RCUA Block Diagram .......................................................................................... 19 Figure 4-4 RMUB Board ....................................................................................................... 20 Figure 4-5 RMUB Block Diagram .......................................................................................... 22 Figure 4-6 RTUA Board ........................................................................................................ 22 Figure 4-7 RTUA Block Diagram........................................................................................... 24 Figure 4-8 RTUB Board ........................................................................................................ 25 Figure 4-9 RTUB Block Diagram........................................................................................... 26 Figure 4-10 RTUMO board ................................................................................................... 27 Figure 4-11 RTUMO Block Diagram ..................................................................................... 28 Figure 4-12 RTUME Board ................................................................................................... 28 Figure 4-13 RTUME Block Diagram...................................................................................... 30 Figure 4-14 PM Board .......................................................................................................... 31 Figure 4-15 RPUA Board ...................................................................................................... 32 Figure 4-16 RFAA Board ...................................................................................................... 33 Figure 6-1 RSSI Parameters................................................................................................. 45 Figure 7-1 1+0 Networking Configuration ............................................................................. 48 Figure 7-2 1+0 Configuration Principle .................................................................................. 48 Figure 7-3 1+1 HSB Configuration ........................................................................................ 49 Figure 7-4 1+1 HSB Configuration Principle ......................................................................... 50 ZTE Confidential Proprietary © 2011 ZTE CORPORATION. All rights reserved. V ZXMW NR8250 Product Description Figure 7-5 1+1 SD Configuration ......................................................................................... 52 Figure 7-6 1+1 SD Configuration Principle ............................................................................ 52 Figure 7-7 1+1 FD Configuration Diagram ............................................................................ 54 Figure 7-8 1+1 FD Configuration Diagram ............................................................................ 55 Figure 7-9 SNCP Networking Diagram ................................................................................. 57 Figure 7-10 SNCP Networking Principle ............................................................................... 57 Figure 7-11 RSTP Networking Diagram ................................................................................ 59 Figure 7-12 1+1 RSTP Networking Principle......................................................................... 59 Figure 7-13 2 x (1+0) + 2 x (1+1 HSB) Networking Diagram ................................................. 60 TABLES Table 2-1 Ethernet Protocols .................................................................................................. 5 Table 3-1 6 ~ 11 GHz ODU .................................................................................................. 11 Table 3-2 15 ~ 38 GHz ODU Interface Description ............................................................... 12 Table 3-3 Detached Installation of 6 ~ 8.5 GHz ODU ............................................................ 13 Table 3-4 Attached Installation of 11 ~ 38 GHz ODU ............................................................ 14 Table 3-5 Detached Installation of 11 ~ 38 GHz ODU ........................................................... 14 Table 4-1 NR8250 IDU Board Description ........................................................................... 16 Table 4-2 RCUA Interface Description .................................................................................. 17 Table 4-3 RCUA LED Indicator Description .......................................................................... 18 Table 4-4 RMUB Interface Description.................................................................................. 20 Table 4-5 RMUB LED Indicator Description .......................................................................... 20 Table 4-6 RTUA Interface Description .................................................................................. 23 Table 4-7 RTUA LED Indicator Description ........................................................................... 23 Table 4-8 RTUB Interface Description .................................................................................. 25 Table 4-9 RTUB LED Indicator Description ........................................................................... 25 Table 4-10 RTUMO Interface Description ............................................................................. 27 Table 4-11 RTUMO LED Indicator Description ..................................................................... 27 Table 4-12 RTUME Interface Description ............................................................................. 29 Table 4-13 RTUME LED Indicator Description ...................................................................... 29 Table 4-14 PM Interface Description..................................................................................... 31 Table 4-15 PM LED Indicator Description ............................................................................. 31 Table 4-16 RPUA Interface Description ................................................................................ 32 Table 4-17 RPUA LED Indicator Description......................................................................... 33 Table 4-18 RFAA LED Indicator Description ......................................................................... 34 ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. VI ZXMW NR8250 Product Description Table 6-1 Dimension and Weight .......................................................................................... 37 Table 6-2 Power Voltage Parameters ................................................................................... 38 Table 6-3 Temperature and Humidity ................................................................................... 38 Table 6-4 Typical Power Consumption ................................................................................ 38 Table 6-5 System Capacity (TDM and Ethernet)................................................................... 39 Table 6-6 Tx/Rx Spacing Parameters ................................................................................... 40 Table 6-7 IF Signal Parameters ............................................................................................ 41 Table 6-8 Interface Parameters ............................................................................................ 42 Table 6-9 Maximum Transmit Power .................................................................................... 42 Table 6-10 Minimum Transmit Power ................................................................................... 43 Table 6-11 ATPC Range ...................................................................................................... 43 Table 6-12 Threshold of Receive Power ............................................................................... 43 Table 6-13 Complied Standards ........................................................................................... 44 Table 6-14 Anti-Continuous-Wave Interference Parameters ................................................. 45 Table 7-1 NR8250 Network Configurations ........................................................................... 47 Table 7-2 N x (1+0) Network Configuration ........................................................................... 47 Table 7-3 1+1 HSB Configuration ......................................................................................... 49 Table 7-4 1+1 SD Configuration ........................................................................................... 51 Table 7-5 1+1 FD Configuration............................................................................................ 53 Table 7-6 SNCP Configuration ............................................................................................. 56 Table 7-7 SNCP Configuration ............................................................................................. 58 Table 7-8 2 x (1+0) + 2 x (1+1 HSB) Networking .................................................................. 60 ZTE Confidential Proprietary © 2011 ZTE CORPORATION. All rights reserved. VII ZXMW NR8250 Product Description 1 Overview This chapter gives an overview of the ZXMW NR8250 Digital Microwave Radio Transmission System (NR8250 for short). 1.1 About ZXMW NR8250 The ZXMW NR8250 is a next generation digital microwave radio system developed by ZTE Corporation. It provides a nodal microwave radio solution with hybrid and native transmission for high capacity transmission and aggregation node. Tip: For detailed information on the Hybrid & Native solution, refer to Hybrid & Native Microwave Radio Transmission Solution. The NR8250 supports the following functions and features: Hybrid and native transmission of TDM and Ethernet services, native service bearing mode, maximizing transmission capacity Radio transmission of TDM and Ethernet services on 6 to 38 GHz frequency band that comply with ITU standard Support E1, STM1/4, Fast Ethernet (FE) and GbE (Gigabit Ethernet) services, meeting the backhaul network requirement of smooth evolution from 2G to 3G network. Software programmable QPSK ~ 256QAM modulation scheme with flexible adjustment within 7 ~ 56 MHz channel spacing, reaching the maximum transmission capacity at 56 MHz channel spacing of 2xSTM-1 TDM traffic or 400Mbps Ethernet traffic. Microwave radio aggregation node that supports six directions The NR8250 adopts split-mount architecture, including indoor unit (IDU) and outdoor unit (ODU). The ODU is waterproof and can be mounted with antenna in an integrated or separated way. 1.2 Product Appearance Figure 1-1 shows the front panel of an NR8250 IDU. Figure 1-2 shows a 6 ~ 11 GHz ODU. Figure 1-3 shows a 15~38 GHz ODU. ZTE Confidential Proprietary 2011 ZTE CORPORATION. All rights reserved. 1 ZXMW NR8250 Product Description Figure 1-1 NR8250 IDU Figure 1-2 6 ~ 11 GHz ODU Figure 1-3 15 ~ 38 GHz ODU ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 2 ZXMW NR8250 Product Description 1.3 Network Applications The NR8250 can be widely used in aggregation nodes of 2G/3G mobile backhaul network, providing nodal microwave radio transmission solution for high capacity transmission at aggregation node, as shown in Figure 1-4. The nodal solution utilizes traffic multiplexing (MUX) technology to simplify link aggregation operation and to improve system reliability. Figure 1-4 Example of Link Aggregation Solution ZTE Confidential Proprietary 2011 ZTE CORPORATION. All rights reserved. 3 ZXMW NR8250 Product Description 2 Features Tip: For more information about NR8250 features, refer to the ZXMW NR8250 Feature Description manual. 2.1 Hybrid & Solution Native Microwave Transmission The hybrid & native concept is introduced in NR8250 microwave radio transmission solution. “Native” refers to the advanced native transmission technology while “Hybrid” refers to the hybrid transmission without mapping. In the Hybrid & Native solution, native TDM traffic and Ethernet traffic can share air interface bandwidth dynamically while neither traffic type is mapped over the other. The advantages of this feature are as follows: 2.2 Low link latency, improving transmission efficiency Avoid unnecessary frame encapsulation overhead, maximizing radio bandwidth utilization Reduce spectrum resource, enable operator to utilize the limited microwave spectrum resource more effectively Service Cross Connect Function The NR8250 supports TDM cross connect function from E1 to STM-1 and from STM-1 to E1. The maximum cross connect capacity is 3200E1*3200E1. Meantime it also supports Ethernet cross connect function with maximum capacity of 10 GB. 2.3 Six-Directions Aggregation Node As an aggregation node, the NR8250 supports maximum of six transmission directions. The built-in MUX can support the nodal function of service switching without external wiring at an aggregation site. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 4 ZXMW NR8250 Product Description 2.4 ACM – Adaptive Coding & Modulation (ACM) refers to the technology of automatic coding and modulation scheme adjustment based on channel quality. ACM can improve transmission efficiency and spectrum utilization as well as protect the service reliability with high priority level during poor channel quality 2.5 Ethernet Switching The NR8250 supports the following Ethernet switching technologies: Provides 10/100/1000 Mbps self adaptive interface, supporting automatic negotiation function and automatic transmission rate adjustment Supports auto MDI/MDIX function for all Ethernet interfaces Supports Ethernet bandwidth utilization statistics and remote monitoring Supports 8k Media Access Control (MAC) addresses Supports 4k VLANs complying with IEEE 802.1q standard Supports jumbo frame size of 1522 bytes Table 2-1 shows the Ethernet protocols supported by the NR8250. Table 2-1 Ethernet Protocols Protocol Description IEEE 802.1d STP Spanning Tree Protocol (STP) can be used in resolving network looping, where, through certain algorithms, some redundant paths are blocked and the ring network is adapted into a tree network without any loop. This prevents packets from proliferating and infinite recycling in the loop network. IEEE 802.1w RSTP Rapid Spanning Tree Protocol (RSTP) is developed on the basis of IEEE 802.1d STP. IEEE 802.3x IEEE Std 802.3 IEEE 802.1q VLAN ZTE Confidential Proprietary Frame traffic control protocol in full-duplex mode A collection of IEEE standards produced in defining the physical layer and data link layer's MAC of wired Ethernet. It is a local area network technology with some wide area network applications. Physical connections are made between nodes and/or infrastructure devices (hubs, switches, routers) by various types of copper or fiber cable. Virtual Bridged Local Area Networks (VBLAN) specifies the implementations of VLAN. 2011 ZTE Corporation. All rights reserved. 5 ZXMW NR8250 Product Description 2.6 QoS – Quality of Service QoS is a security mechanism of the network to resolve network delay and congestion problems. In case of network overload or congestion, QoS ensures important traffics are not delayed or discarded; meanwhile, it guarantees the efficient network operation 2.7 SNCP Protection for TDM The NR8250 supports Sub Network Connection Protection (SNCP) for TDM services, which improves the microwave radio link transmission reliability. 2.8 The flexible SNCP configuration can be applied in various networks such as backbone network, relay network, and access network in different topologies such as tree, ring, and mesh. The protection structure uses 1+1 mode and the principle is “dual transmitting and selective receiving. Support air interface mode SNCP protection for E1 switchover protection. RSTP/STP The NR8250 supports Rapid Spanning Tree Protocol (RSTP) and Spanning Tree Protocol (STP). RSTP is defined by IEEE802.1w and STP is defined by IEEE802.1d. STP It can be used in resolving network looping, where, through certain algorithms, some redundant paths are blocked and the ring network is adapted into a tree network without any loop. This prevents broadcast storm in network looping. RSTP It is developed on the basis of STP and provides faster convergence speed when the network structure changes. Compared with STP, RSTP adds two port types: alternate port and backup port. RSTP has the following advantages to provide faster convergence speed than STP: In STP, port state and port role are not clearly differentiated, and the convergence mainly depends on the switchover of port state. In RSTP, port state and port role are clearly differentiated, and the convergence mainly depends on the switchover of port role. The switchover of STP port states must passively wait for timeout. The switchover of RSTP port states is an active negotiation. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 6 ZXMW NR8250 Product Description The non-root bridge in STP can only passively relay Bridge Protocol Data Unit (BPDU). The non-root bridge in RSTP can actively send BPDU to maintain the link to downstream nodes. Tip: For information about RSTP configuration principle, refer to chapter 7.6 Network. 2.9 RSTP Ring ATPC – Automatic Transmitter Power Control The NR8250 supports ATPC function. 3 Hardware Description The NR8250 adopts split-mount architecture, including indoor unit (IDU) and outdoor unit (ODU). 3.1 IDU The NR8250 IDU comprises of a casing and series of boards. It is 19 inches in width and 2U in height. It can be mounted on a standard 19-inch portal frame, on the wall, or the desktop. Tip: For detailed description of the boards, refer to chapter 4 Boards. 3.2 ODU The NR8250 ODU supports 4 x E1 ~ 2 x STM-1 (TDM) or 10 ~ 400 Mbps (Ethernet) capacity transmission at the 6 ~ 38 GHz frequency band. The NR8250 ODU has two types based on frequency band, namely 6 ~ 11GHz ODU and 15 ~ 38GHz ODU. It can be installed directly on the antenna or separately from the antenna. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 7 ZXMW NR8250 Product Description 3.2.1 Appearance 3.2.1.1 6 ~ 11 GHz ODU Figure 3-1 shows the front view of a 6 ~ 11 GHz ODU. The rear of the ODU can be differentiated with 6/7/8/8.5 GHz ODU and 11 GHz ODU, as shown in Figure 3-2 and Figure 3-3 respectively. Figure 3-1 6 ~ 11 GHz ODU (Front View) Figure 3-2 6/7/8/8.5 GHz ODU (Rear View) ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 8 ZXMW NR8250 Product Description Figure 3-3 11 GHz ODU (Rear View) 3.2.1.2 15 ~ 38 GHz ODU Figure 3-4 shows the front view of a 15 ~ 38 GHz ODU. Figure 3-5 shows the rear view and Figure 3-6 shows the bottom view. Figure 3-4 15 ~ 38 GHz ODU (Front View) ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 9 ZXMW NR8250 Product Description Figure 3-5 15 ~ 38 GHz ODU (Rear View) Figure 3-6 15 ~ 38 GHz ODU (Bottom View) 3.2.2 Interface Description ODU interfaces are those connected with the IDU and antenna. 3.2.2.1 6 ~ 11 GHz ODU Figure 3-7 describes the interfaces of the 6 ~ 11 GHz ODU. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 10 ZXMW NR8250 Product Description Figure 3-7 6 ~ 11 GHz ODU Interfaces Table 3-1 describes the interfaces of the 6~11 GHz ODU. Table 3-1 6 ~ 11 GHz ODU Interface Type Description IFL (IF IN/OUT) N-type male connector IF signal input and output interface FG (Frame Ground) Bolt Interface of grounding cable Rx LEV MON F connector, type C15 Receiving level monitoring 6/7/8/8.5 GHz N (Female) 11 GHz PDR100 (waveguide flange) RF IN/OUT ZTE Confidential Proprietary RF input and output interface 2011 ZTE Corporation. All rights reserved. 11 ZXMW NR8250 Product Description 3.2.2.2 15 ~ 38 GHz ODU Figure 3-8 15 GHz ~ 38 GHz ODU Interfaces Table 3-2 describes the interfaces of the 15 ~ 38 GHz ODU. Table 3-2 15 ~ 38 GHz ODU Interface Description Interface Type Description IFL (IF IN/OUT) N-type male connector IF signal input/output interface FG (Frame Ground) Bolt Interface of grounding cable Rx LEV MON F connector, type C15 Receiving level monitoring Waveguide flange RF IN/OUT ZTE Confidential Proprietary 15GHz PBR140 18/23GHz PBR220 38GHz PBR32 RF input/output interface 2011 ZTE Corporation. All rights reserved. 12 ZXMW NR8250 Product Description 3.2.3 Installation Methods NR8250 ODU has two installation methods: attached and detached installation. 6 ~ 8.5 GHz ODU supports detached installation while 11 ~ 38 GHz ODU supports both attached installation and detached installation. 3.2.3.1 6 ~ 8.5 GHz ODU 6 ~ 8.5 GHz ODU supports only detached installation. Table 3-3 describes the installation. Table 3-3 Detached Installation of 6 ~ 8.5 GHz ODU Type Installation Diagram Description 1+0 ODU is connected with the antenna through one coaxial cable. 1+1 Two ODUs are connected with the antenna by two coaxial cables through the combiner. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 13 ZXMW NR8250 Product Description 3.2.3.2 11 ~ 38 GHz ODU 11 ~ 38 GHz ODU supports both attached and detached installation modes. Table 3-4 describes the attached installation. Table 3-4 Attached Installation of 11 ~ 38 GHz ODU Type Installation Diagram Description 1+0 ODU is directly connected with the antenna. 1+1 Two ODUs are connected with the antenna by the combiner. Table 3-5 describes the detached installation. Table 3-5 Detached Installation of 11 ~ 38 GHz ODU Installation Diagram ZTE Confidential Proprietary Description 2011 ZTE Corporation. All rights reserved. 14 ZXMW NR8250 Product Description Installation Diagram Description 1+0 ODU is connected with the antenna through the flexible waveguide. 1+1 Two ODUs are connected with the antenna by the combiner through the flexible waveguide. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 15 ZXMW NR8250 Product Description 4 Boards This chapter gives the IDU board layout and detailed description of each board. 4.1 Board Layout NR8250 IDU comprises the following boards: Radio Core Unit (RCU) Radio Modem Unit (RMU) Radio Traffic Unit (RTU) Power Module (PM) and ODU Power Unit (RPU) Radio Fan (RFA) NR8250 IDU has 12 slots. Figure 4-1 shows the board layout. Figure 4-1 NR8250 IDU Board Layout slot10 slot1 slot5 slot6 slot3 slot7 slot12 slot4 slot8 slot9 slot2 slot11 Table 4-1 describes the boards and their corresponding slots. Table 4-1 NR8250 IDU Board Description Board Type Board Name Board Description Available Slots RCU RCUA Radio Core Unit A Slot 1 RMU RMUB Radio Modem Unit B Slots 3–8 RTUA Radio Traffic Unit A (16E1) Slots 2–8 RTUB Radio Traffic Unit B (8×E1+1×STM1+1×STM1/4) Slot s 2–8 RTU ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 16 ZXMW NR8250 Product Description Board Type Board Name Board Description Available Slots RTUMO Radio Traffic Unit Module Optical (2 x GbE(O)+4 x FE) Slots 2–8 RTUME Radio Traffic Unit Module Electrical (2 x GbE(E)+4 x FE) slot 2–8 PM PM Power Module (for IDU) slot 10–11 RPU RPUA Radio Power Unit A (for ODU) slot 12 RFA RFAA Radio Fan A slot 9 4.2 RCUA 4.2.1 Function Description RCUA board is for system main control, clock, and switching. It can be installed in slots 1~2. Its specific functions are as follows: Performs system main control Implements system clock synchronization, providing working clock for other boards through the CLKIN/OUT interface Provides TDM service cascading interface (TDMEXT interface) Supports Ethernet service switching through GbE interface Provides NMS, EOW, and debugging interfaces Figure 4-2 shows the RCUA board. Figure 4-2 RCUA Board RUN 4.2.2 ALM SYS RST RCUA CALL M/S M/S CS NMS GbE TDMEXT DEBUG CLK IN/OUT EOW Interface Description Table 4-2 describes the interfaces on the RCUA board. Table 4-2 RCUA Interface Description Interface Type Description NMS RJ45 NMS service interface (10/100/1000Base-T) GbE RJ45 Gigabit Ethernet service interface (10/100/1000Base-T) ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 17 ZXMW NR8250 Product Description Interface 4.2.3 Type Description TDMEXT RJ45 Reserved port device cascading interface, TDM service cascading interface (10/100/1000Base-T) DEBUG RJ45 FE port for debugging CLK IN/OUT RJ45 Clock input or output configurable interface, including 2MHz/2Mbps BITS clock and 1PPS+TOD clock EOW RJ45 Engineering Order Wire interface CALL Button Call button, used in combination with EOW interface M/S Button Used for active/standby switchover Not supported currently RST Button Used for resetting the board LED Indicator Description Table 4-3 describes the status of the LED indicators on the RCUA board. Table 4-3 RCUA LED Indicator Description Name RUN ALM Color Description Status Description Green Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken. ON/OFF: faulty. Red Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm ON: working as active board OFF: working as standby board M/S CS SYS Green Green Red/Yellow/Green Active/Standby indication Note: Currently, active/standby switchover is not Clock source indication ON: working as active clock source Slow flashing: working as standby clock source OFF: no clock source System indication Green: running normally Red: fast flashing (critical alarm); ON (major alarm) Yellow: minor alarm or warning OFF: exception occurs supported. Tip: ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 18 ZXMW NR8250 Product Description Alarms are classified into four severity levels, which are critical, major, minor, and warning in a descending order. 4.2.4 Block Diagram Figure 4-3 shows the block diagram of the RCUA board. Figure 4-3 RCUA Block Diagram Service signal Clock signal Clock module Control signal +12V Network management Network management， EOW Back Plane Dual Service Dual channel Service switch switch channel Clock selection Clock signal CPU control module Control BUS NMS Logic control module Power module 4.3 RMUB 4.3.1 Function Description TDMEXT GbE EOW CLK IN/OUT DEBUG The RMUB board is a modulation/demodulation board, It can be installed in slots 3 ~ 8. Its specific functions are as follows: Provides -48 V power for ODU Provides QPSK ~ 256 QAM modulation/demodulation function Modulation: codes and modulates the baseband signals from RCUA to IF signals and sends them to ODU through the IF interface. Demodulation: demodulates and decodes the IF signals from ODU to baseband signals and sends them to RCUA. Supports ACM, ATPC, and QoS ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 19 ZXMW NR8250 Product Description Supports 1+1 HSB/SD/FD protection Supports the transmission capacity of 400 Mbps for one carrier Supports under/over-voltage protection and over-current protection at IF interface Figure 4-4 shows the RMUB board. Figure 4-4 RMUB Board RST RUN 4.3.2 IF ALM OD U ON RMUB OFF TX RX LINK OPWR OPWR Interface Description Table 4-4 describes the interfaces on the RMUB board. Table 4-4 RMUB Interface Description Interface 4.3.3 Type Description OPWR Power switch ODU power switch IF Female TNC connector Input /output interface of IF signals RST Button Reset button for RMUB LED Indicator Description Table 4-5 describes the status of the LED indicators on the RMUB board. Table 4-5 RMUB LED Indicator Description Name Color Description Status Description RUN Green Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken ON/OFF: faulty ALM Red Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm Tx Green ODU transmitting power status ON: The ODU connecting with the RMU is in transmitting power state. OFF: The ODU connecting with the RMU is ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 20 ZXMW NR8250 Product Description Name Rx Color Green Description indication Status Description in silent state. RMUB working status indication ON: The RMU board is in working state. OFF: The RMU board is in protection state. LINK Green Radio link synchronization indication ON: The radio link is in synchronized state. OFF: The radio link is in out-ofsynchronization state. Fast flashing: The radio link is in synchronizing state. OPWR Green ODU power indication ON: ODU is powered on normally. OFF: ODU is not powered on. Red/Green ODU status indication ON: The communication between ODU and IDU is normal. OFF: The communication between ODU and IDU has error. ODU Tip: Alarms are classified into four severity levels, which are critical, major, minor, and warning in a descending order. 4.3.4 Block Diagram Figure 4-5 shows the block diagram of the RMUB board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 21 ZXMW NR8250 Product Description Figure 4-5 RMUB Block Diagram Modem module Data BUS Back Plane Service signal MUX Data BUS IF process module Control BUS Control BUS IF Control BUS CPU control BUS Clock signal +12V -48V Power module 4.4 RTUA (16 x E1) 4.4.1 Function Description OPWR The RTUA board is a system traffic board A. It can be installed in slots 2 ~ 8. It provides access of 16 E1 services. Figure 4-6 shows the RTUA board. Figure 4-6 RTUA Board RUN E1 CH1 – CH16 Interface Description Table 4-6 describes the interfaces on the RTUA board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. ALM E1 4.4.2 RTUA RST 22 ZXMW NR8250 Product Description Table 4-6 RTUA Interface Description Interface 4.4.3 Type Description E1 CH1CH16 DB68 Capacity: 16 x E1 RST Button Reset button for RTUA LED Indicator Description Table 4-7 describes the status of the LED indicators on the RTUA board. Table 4-7 RTUA LED Indicator Description Name RUN ALM E1 4.4.4 Color Description Status Description Green Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken ON/OFF: faulty Red Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm Green E1 link status indication ON: All the 16 E1 signals are normal. OFF: All the 16 E1 signals are lost. Slow flashing: Some E1 signals are normal. Some E1 signals are lost. Block Diagram Figure 4-7 shows the block diagram of the RTUA board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 23 ZXMW NR8250 Product Description Figure 4-7 RTUA Block Diagram Service interface module 16×E1 Data BUS Back plane Service signal Clock signal MUX Control BUS +12V Control BUS CPU control module Power module 4.5 RTUB (8 x E1 + 1 x STM-1 + 1 x STM-1/4) 4.5.1 Function Description The RTUB board is system service board B used for the access of E1, STM-1, and STM-4 services. It can be installed in slots 2 ~ 8. Its specific functions are as follows: Supports eight E1 interfaces Supports one STM-1 interface and one STM-1/4 interface Supports two channels of STM-1 point-to-point transparent transmission Supports the adding and dropping of 63 E1s on one STM-1 Supports the adding and dropping of four STM-1s on one STM-4, with STM4 from the line side and STM-1 distributable to the radio side and line side. Supports SNCP protection Figure 4-8 shows the RTUB board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 24 ZXMW NR8250 Product Description Figure 4-8 RTUB Board RX1 TX2 RUN TX1 4.5.2 RST DB36 ALM STM-1/4 RTUB STM-1 S1 S2 E1 E1 CH1 – CH8 RX2 Interface Description Table 4-8 describes the interfaces on the RTUB board. Table 4-8 RTUB Interface Description Interface 4.5.3 Type Description E1 CH1-CH8 DB36 Capacity: 8 x E1 STM-1 Tx1/Rx1 SFP LC Rate: 155.52 Mbps STM-1/4 Tx2/Rx2 SFP LC Rate: 155.52 Mbps(STM-1)/622.080 Mbps (STM-4) RST Button Reset button for RTUB LED Indicator Description Table 4-9 describes the status of the LED indicators on the RTUB board. Table 4-9 RTUB LED Indicator Description Name Color Description Status Description RUN Green Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken ON/OFF: faulty ALM Red Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm E1 Green E1 link status indication ON: All the eight E1 signals are normal. OFF: All the eight E1 signals are lost. Slow flashing: Some E1 signals are normal and some E1 signals are lost. S1 Green First (Tx1/Rx1) STM-1 link status indication ON: The link signal is normal. OFF: The link signal is lost. S2 Green Second (Tx2/Rx2) STM-1/4 link status indication ON: The link signal is normal. OFF: The link signal is lost. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 25 ZXMW NR8250 Product Description 4.5.4 Block Diagram Figure 4-9 shows the block diagram of the RTUB board. Figure 4-9 RTUB Block Diagram STM-1 Data BUS ADM Service interface module STM-1 /STM-4 8×E1 Data BUS Back plane Data BUS Service signal Clock signal MUX Control BUS Control BUS +12V CPU control module Power module 4.6 RTUMO (2 x GbE(O) / 4 x FE) 4.6.1 Function Description The RTUMO board is a system traffic board (optical module) for the access of FE and GbE optical interface services. It can be installed in slots 2 ~ 8. Its specific functions are as follows: RTUMO provides 2 x GbE (O) + 4 x FE interfaces GbE supports optical interface and FE supports electrical interface GbE interface supports synchronous Ethernet Figure 4-10 shows the RTUMO board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 26 ZXMW NR8250 Product Description Figure 4-10 RTUMO board TX2 RX2 RST GbE1 4.6.2 GbE2 FE1 FE2 FE3 RUN GbE1 GbE2 RTUMO RX1 ALM TX1 FE4 Interface Description Table 4-10 describes the interfaces on the RTUMO board. Table 4-10 RTUMO Interface Description Interface 4.6.3 Type Description FE RJ-45 Wiring type: 10/100BaseT Rate: 10/100Mbps self adaptive GbE SFP LC Wiring type: 1000Base-LX, 1000Base-SX Rate: 1000 Mbps RST Button Reset button for RTUMO LED Indicator Description Table 4-11 describes the status of the LED indicators on the RTUMO board. Table 4-11 RTUMO LED Indicator Description Name 4.6.4 Color Description Status Description RUN Green Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken ON/OFF: faulty ALM Red Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm GbE1 Green First GbE link status indication ON: The link signal is normal. OFF: The link signal is lost. GbE2 Green Second GbE link status indication ON: The link signal is normal. OFF: The link signal is lost. Block Diagram Figure 4-11 shows the block diagram of the RTUMO board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 27 ZXMW NR8250 Product Description Figure 4-11 RTUMO Block Diagram Service Signal 4×FE Switch 2×GbE GbE Interface PHY 2×GbE(O ) Control BUS Back Plane Control BUS Clock Signal CPU Control Module Control BUS Clock Signal +12V Clock Process Power Module 4.7 RTUME (2 x GbE(E) / 4 x FE) 4.7.1 Function Description The RTUME board is a system traffic board (electrical module) for the access of FE and GbE electrical interface service. It can be installed in slots 2 ~ 8. Its specific functions are as follows: RTUME provides 2 x GbE (E) + 4 x FE interfaces FE and GbE support electrical interface GbE interface support synchronous Ethernet Figure 4-12 shows the RTUME board. Figure 4-12 RTUME Board FE1 FE2 FE3 FE4 2011 ZTE Corporation. All rights reserved. 28 RUN ZTE Confidential Proprietary GbE2 RTUME GbE1 ALM RST ZXMW NR8250 Product Description 4.7.2 Interface Description Table 4-12 describes the interfaces on the RTUME board. Table 4-12 RTUME Interface Description Interface Type Description FE RJ-45 10/100BaseT Rate: 10/100Mbps self adaptive GbE RJ-45 1000BaseT Rate: 10/100/1000Mbps self adaptive RST Button Reset button for RTUME Tip: 10/100BaseT and 1000BaseT use super CAT5 twisted pair cables. 4.7.3 LED Indicator Description Table 4-13 describes the status of the LED indicators on the RTUME board. Table 4-13 RTUME LED Indicator Description Name RUN ALM 4.7.4 Color Green Red Description Status Description Running status indication Slow flashing: running normally Fast flashing: restarting, or the link to RCUA control plane is broken ON/OFF: faulty Alarm indication Fast flashing: critical or major alarm Slow flashing: minor alarm or warning OFF: no alarm Block Diagram Figure 4-13 shows the block diagram of the RTUME board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 29 ZXMW NR8250 Product Description Figure 4-13 RTUME Block Diagram Service Signal 4×FE Switch 2*GE GbE Interface PHY 2×GbE(E) Control BUS Back Plane Control BUS Clock Signal CPU Control Module Control BUS Clock Signal +12V Clock Process Power Module 4.8 PM 4.8.1 Function Description The PM is a power board for IDU. It can be installed in slots slot 10 ~ 11. Its specific functions are as follows: Uses -48 V DC power input and supplies 12 V and 3.3 V power for other others of IDU Supports 300 W power output Supports under/over-voltage input and over-current protection Supports lightning and surge protection Supports 1+1 power protection Figure 4-14 shows the PM board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 30 ZXMW NR8250 Product Description Figure 4-14 PM Board 4.8.2 Interface Description Table 4-14 describes the interfaces on the PM board. Table 4-14 PM Interface Description Interface 4.8.3 Type Description -48VRTN Hybrid type connector -48 V DC power input interface OFF/ON Switch PM power switch MON Mini-USB Reserved for engineering debugging LED Indicator Description Table 4-15 describes the status of the LED indicators on the PM board. Table 4-15 PM LED Indicator Description Name RUN Color Green Description Status Description Running status indication Slow flashing: running normally Fast flashing: restarting ON/OFF: faulty ALM Red Alarm indication Fast flashing: critical alarm Slow flashing: major alarm ON: minor alarm OFF: no alarm PWR Blue Power indication ON: normal OFF: faulty ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 31 ZXMW NR8250 Product Description 4.9 RPUA 4.9.1 Function Description The RPUA board is the power board for ODU. It can be installed in slot 12. Its specific functions are as follows: Uses -48 V DC input, which is transferred to RMU through the backplane and to ODU through IF interface to provide -48 V power for ODU Supports 210 W power output Supports under/over-voltage input and over-current protection Supports lightning and surge protection Supports 1+1 power protection Figure 4-15 shows the RPUA board. Figure 4-15 RPUA Board 4.9.2 Interface Description Table 4-16 describes the interfaces on the RPUA board. Table 4-16 RPUA Interface Description Interface 4.9.3 Type Description PS1 2-core -48 V power connector -48 V DC power input interface PS2 2-core -48 V power connector -48V DC power input interface LED Indicator Description Table 4-17 describes the status of the LED indicators on the RPUA board. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 32 ZXMW NR8250 Product Description Table 4-17 RPUA LED Indicator Description Name Color Description PS1 Green First -48 V power input indication Always ON: -48 V power input is normal. OFF: no -48 V power input PS2 Green Second -48 V power input indication Always ON: -48 V power input is normal. OFF: no -48 V power input. 4.10 RFAA 4.10.1 Function Description Status Description The RFAA board is the system fan control board. It can be installed in slot 9. Its specific functions are as follows: Uses 12 V power input, driving six 5 W fans Supports temperature detection and fan speed monitoring Supports intelligent speed adaptation Figure 4-16 RFAA Board ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 33 ZXMW NR8250 Product Description 4.10.2 LED Indicator Description Table 4-18 describes the status of the LED indicators on the RFAA board. Table 4-18 RFAA LED Indicator Description Name Color Description Status Description RUN Green Running status indication ON: Board is powered on and is not under control. Slow flashing: Fan is running and under control. OFF: Board is not powered on. ALM Red Alarm indication ON: faulty OFF: no alarm ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 34 ZXMW NR8250 Product Description 5 Network Management System 5.1 WEB LMT WEB LMT is a local maintenance terminal for configuring and maintaining IDU as well as the connected ODUs at local. It is embedded in NR8250 IDU and no additional software installation is required. Users can connect a PC with the DEBUG port (or NMS port) of RCUA through a network cable and visit the WEB LMT on the IE browser in the PC. WEB LMT provides alarm management, configuration management, performance management, maintenance management, security management, and language management. Fault Management Users can preview board status. The board status include normal (the LED indicator is green), alarm (the LED indicator is red), and power-on (the LED indicator is grey). Users can query history alarm, current alarms and event. IDU alarms include system alarms and slot alarms. The board type and alarm indicator of the related slot is displayed on the alarm interface. Based on the priority level, alarms have four levels in a descending sequence: critical, major, minor, and warning. Configuration Management Users can configure local NE, neighbor NE, board, clock, TDM & Ethernet service, license, and system time. Local NE Supports the query and configuration of local NE information and static routing configuration. NE information includes NE ID, NE name, NE type, and NE IP address. Adjacent NE Supports the query of basic information about the adjacent NE, for example, NE ID, NE name, NE type, NE IP address, and NE connection status. Board Supports the configuration of board type and relation with slots, active/standby relation of RMUB, and RTU function. Clock ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 35 ZXMW NR8250 Product Description Supports the query of clock source and clock status of current equipment Supports the query of currently used clock source and available clock source of each board Provides the configuration of clock resource for each board Radio link Supports the configuration of working mode (such as capacity and modulation scheme), protection parameter, ACM parameter, ATPC parameter and ODU parameters. TDM & Ethernet service Supports the configuration of cross connect and SNCP for TDM service Supports the query and configuration of Ethernet service interface, inflow and outflow speed limitation of broadcast package Supports the configuration of VLAN, QoS, and RSTP/STP. Supports the configuration of EOW, fan control mode, license, and system time. Performance Management Users can query the radio link performance statistical data, ODU, TDM, and Ethernet traffic that is generated within 15 minutes and 24 hours. The data can be exported as an EXCEL and WORD file. Maintenance Management WEB LMT provides the system reset function, version query, configuration file management, ODU version management, SFP configuration, traffic loopback, and power-down preprocessing. Security Management WEB LMT provides the functions such as user management, SNMP IP configuration, Trap IP configuration, and SNMP community. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 36 ZXMW NR8250 Product Description 6 Technical Parameters This chapter describes the related parameters. 6.1 Physical Parameters 6.1.1 Dimension and Weight Table 6-1 shows the dimensions and weights of IDU and ODU. Table 6-1 Dimension and Weight Dimension (mm) Weight (kg) 90 (H) Item IDU 7 (six ways) 482.6 (W) 360 (D) 482.6(W) x 90(H) x 199(D) ODU (6 ~ 11GHz) 3.5 360 (W) 247 (D) 360 (W) x 360 (D) x 129 (H) ODU (15 ~ 38GHz) 3.0 239 (W) 239 (W) x 247 (D) x 75 (H) ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 37 ZXMW NR8250 Product Description 6.1.2 Power Voltage Table 6-2 shows the power voltage parameters of the system. Table 6-2 Power Voltage Parameters Power Module 6.1.3 Input Voltage Output Voltage Description PM -48 V(-60 ~ -40 V) 12 V and 3.3 V Supplies power for boards of IDU RPUA -48 V(-60 ~ -40 V) -48 V(-60 ~ -40 V) Supplies power for ODU Temperature and Humidity Table 6-3 Temperature and Humidity Item 6.1.4 Working Temperature Guaranteed Operation Transportation/Storage Temperature Humidity IDU -20°C ~ 60°C -20°C ~ 55°C -40°C ~ 70°C < 95%(35°C) ODU -40°C ~ 55°C -33°C ~ 50°C -40°C ~ 70°C < 100% Power Consumption Overall Power Consumption Table 6-4 lists the typical power consumption in various configuration modes. Table 6-4 Typical Power Consumption Mode 6.2 Typical Power Consumption Typical Configuration 1 1xGbE +16E1, 1+0 Unprotected 74 W 2 1xGbE +16E1, 1+1 HSB 100 W 3 1xGbE+16xE1, 6x(1+0) Nodal Configuration 297 W IDU Parameters IDU parameters include channel spacing, modulation mode, system capacity, and interface parameters. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 38 ZXMW NR8250 Product Description 6.2.1 Channel Bandwidth 7, 14, 28, 56 MHz 6.2.2 Modulation Mode QPSK, 16QAM, 32QAM, 64QAM, 128QAM, and 256QAM 6.2.3 System Capacity NR8250 supports mixture of TDM and Ethrrnet traffic with maximum of 4 x E1 ~ 2x STM1 TDM traffic and 10~400 Mbps Ethernet traffic.The actual capacity depends on the modulation scheme and channel bandwidth, as shown in Table 6-5 . Tip: The NR8250 supports TDM and Ethernet traffic cross connect. The maximum cross connect capacity is 3200*3200E1 and 10 GB respectively. Table 6-5 System Capacity (TDM and Ethernet) Modulation QPSK 16QAM 32QAM 64QAM 128QAM ZTE Confidential Proprietary Bandwidth TDM (Max) Ethernet (Max) 7 MHz 4 x E1 9-11 Mbps 14 MHz 8 x E1 20-23 Mbps 28 MHz 16 x E1 43-50 Mbps 56 MHz 32 x E1 89-100 Mbps 7 MHz 8 x E1 20-23 Mbps 14 MHz 16 x E1 36-42 Mbps 28 MHz 32 x E1 87-100 Mbps 56 MHz 1 x STM-1 180-208 Mbps 7 MHz 8 x E1 25-29 Mbps 14 MHz 16 x E1 52-60 Mbps 28 MHz 32 x E1 107-123 Mbps 56 MHz 1 x STM-1 223-259 Mbps 7 MHz 8 x E1 31-36 Mbps 14 MHz 16 x E1 59-68 Mbps 28 MHz 32 x E1 134-155 Mbps 56 MHz 1 x STM-1 276-320 Mbps 7 MHz 16 x E1 33-39 Mbps 14 MHz 32 x E1 70-81 Mbps 28 MHz 1 x STM-1 158-183 Mbps 2011 ZTE Corporation. All rights reserved. 39 ZXMW NR8250 Product Description Modulation 256QAM 6.2.4 Bandwidth TDM (Max) Ethernet (Max) 56 MHz 2 x STM-1 322-373 Mbps 7 MHz 16 x E1 39-45 Mbps 14 MHz 32 x E1 81-94 Mbps 28 MHz 1 x STM-1 182-210 Mbps 56 MHz 2 x STM-1 371-429 Mbps Interface Parameters NR8250 IDU supports 8 x E1, 16 x E1, STM-1, STM-4 as well as FE and GbE (optical and electrical). 6.3 ODU Parameters ODU parameters include frequency range, Tx/Rx spacing, IF signal, and interface parameters. 6.3.1 Frequency Parameters Frequency The frequencies supported by NR8250 are 6, 7, 8, 8.5, 11, 15, 18, 23 and 38 GHz. Tip: The frequency stability deviation is ±5ppm (guarantee value: ±10ppm). Frequency Step Frequency 6.3.2 Step 6/7/8/8.5 GHz 50 kHz 11/15/18/23/38GHz 250 kHz Tx/Rx Spacing Table 6-6 shows the Tx/Rx spacing parameters. Table 6-6 Tx/Rx Spacing Parameters Frequency Band ZTE Confidential Proprietary Frequency Range (GHz) Tx/Rx Spacing (MHz) 2011 ZTE Corporation. All rights reserved. 40 ZXMW NR8250 Product Description Frequency Band 6.3.3 Frequency Range (GHz) Tx/Rx Spacing (MHz) 6 GHz 5.8-7.1 252.04 266 340 7 GHz 7.11-7.9 154 161 168 196 245 8/8.5 GHz 7.725-8.5 119 126 151.614 154 208 266 294.44 305.56 310 311.32 11 GHz 10.7-11.7 490 530 15 GHz 14.5-15.35 315 420 490 728 18 GHz 17.7-19.7 1010 1008 1560 23 GHz 21.2-23.6 1008 1200 1232 38 GHz 37.0-39.5 1260 Intermediate Frequency (IF) Signals Table 6-7 lists the parameters of IF signals. Table 6-7 IF Signal Parameters Item IF Signal Transmission IF Signal Reception Central frequency 350 MHz 140 MHz Modulation frequency 5.5 MHz 10 MHz ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 41 ZXMW NR8250 Product Description Item IF Signal Transmission IF Signal Reception Logic mode Logic1: 0 MHz±200 ppm Logic0: 5.5 MHz±200 ppm Logic1: 0 MHz±200 ppm Logic0: 10 MHz±200 ppm Power range -26 dBm ~ +5 dBm -15 dBm ~ -8 dBm The IF signal transmission direction is from IDU to ODU. The IF signal reception direction is from ODU to IDU. 6.3.4 Interface Parameters Table 6-8 lists the parameters of ODU interface. Table 6-8 Interface Parameters Interface Type Resistance Return Loss 50Ω N-type 6.4 Power Parameters 6.4.1 Transmit Power 12 dB Maximum Transmit Power The maximum transmit power is associated with power and modulation mode. Table 6-9 lists the specific values. Table 6-9 Maximum Transmit Power Frequency Maximum transmit power (dBm) GHz 6 7 8 8.5 11 15 18 23 38 QPSK 29 29 29 29 25 23 24 24 18 16QAM 26 26 26 26 21 20 20 20 14 32QAM 23 23 23 23 19 19 18 18 13 64QAM 21 21 21 21 17 17 15 15 10 128QAM 21 21 21 21 17 17 15 15 10 256QAM 20 20 20 20 16 16 14 14 9 Tip: Tolerance= ±2dB. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 42 ZXMW NR8250 Product Description Minimum Transmit Power The minimum transmit power is associated with frequency. Table 6-10 lists the specific values. Table 6-10 Minimum Transmit Power Frequency 6 7 8 8.5 11 15 18 23 38 Minimum transmit power -1 -1 -1 -1 -5 -7 -6 -6 -7 ATPC Range The system supports Automatic Transmit Power Control (ATPC), which means that system transmit power is automatically adjustable in a certain range. Table 6-11 shows the ATPC range. Table 6-11 ATPC Range Frequency ATPC Range (dB) 6.4.2 GHz 6 7 8 8.5 11 15 18 23 38 QPSK 30 30 30 30 30 30 30 30 25 16QAM 27 27 27 27 26 27 26 26 21 32QAM 24 24 24 24 24 26 24 24 20 64QAM 22 22 22 22 22 24 21 21 17 128QAM 22 22 22 22 22 24 21 21 17 256QAM 21 21 21 21 21 23 20 20 16 Receive Power The receive power threshold is associated with frequency, modulation scheme, and channel bandwidth. Table 6-12 lists the specific values. Table 6-12 Threshold of Receive Power Frequency 6/7/8/8.5GHz 11/15GHz ZTE Confidential Proprietary Modulation Scheme 7MHz 14MHz 28MHz 56MHz QPSK -90 -87 -84 -81 16QAM -83 -80 -77 -74 32QAM -81.5 -78.5 -75.5 -72.5 64QAM -79 -75 -72 -70 128QAM -75.5 -72.5 -69.5 -66.5 256QAM -72 -69 -66 -63 QPSK -89 -86 -83 -80 2011 ZTE Corporation. All rights reserved. 43 ZXMW NR8250 Product Description Frequency 18/23GHz 38GHz Modulation Scheme 7MHz 14MHz 28MHz 56MHz 16QAM -82 -79 -76 -73 32QAM -80.5 -77.5 -74.5 -71.5 64QAM -78 -74 -71 -69 128QAM -74.5 -71.5 -68.5 -66.5 256QAM -71 -68 -65 -62 QPSK -89.5 -86.5 -83.5 -80.5 16QAM -82.5 -79.5 -76.5 -73.5 32QAM -81 -78 -75 -72 64QAM -78 -74 -71 -69 128QAM -75 -72 -69 -66 256QAM -71.5 -68.5 -65.5 -62.5 QPSK -87.5 -84.5 -81.5 -78.5 16QAM -80.5 -77.5 -74.5 -71.5 32QAM -79 -76 -73 -70 64QAM -76 -72 -69 -67 128QAM -73 -70 -67 -64 256QAM -69.5 -66.5 -63.5 -60.5 Tip: Tolerance=2.0dB, BER=10-6. 6.5 Reliability Parameters 6.5.1 Standard Compliance Table 6-13 shows the standards that NR8250 complies with. Table 6-13 Complied Standards Item Specifications EMC Conforms to the requirements of EN 301 489-4 Security Conforms to the requirements of IEC 60950 Operation Conforms to the requirements of ETSI 300 019-1-3 Storage Conforms to the requirements of ETSI 300 019-1-3 Transportation Conforms to the requirements of ETSI 300 019-1-2 ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 44 ZXMW NR8250 Product Description 6.5.2 Fault Tolerance Parameters Fault tolerance parameters include Bit Error Rate (BER) and Mean Time Between Failures (MTBF). 6.5.3 When RSL=-30dBm, BER<10-12 MTBF>200,000 hours RSSI Parameters Received Signal Strength Indication (RSSI) indicates the received signal strength, the value ranges from -20 ~ -90 dBm. This represents the RSSI monitoring in ODU and its respective voltage from 0.5 V ~ 4 V. Figure 6-1 shows the relation between receiving voltage and RSSI. Figure 6-1 RSSI Parameters 6.5.4 Anti-Continuous-Wave Interference Parameters Table 6-14 lists the anti-continuous-wave interference values at different channel spacing and frequency range. Table 6-14 Anti-Continuous-Wave Interference Parameters Channel Bandwidth 7M Frequency Range Rx f0±14MHz ZTE Confidential Proprietary Anti-Continuous-Wave Interference Index ≥ 5 dB 2011 ZTE Corporation. All rights reserved. 45 ZXMW NR8250 Product Description Channel Bandwidth 14 M 28 M 56 M Frequency Range Anti-Continuous-Wave Interference Index Rx f0±17.5MHz ≥ 13 dB Rx f0±28MHz ≥ 7 dB Rx f0±35MHz ≥ 16 dB Rx f0±28MHz ≥ 7 dB Rx f0±56MHz ≥ 18 dB Rx f0±70MHz ≥ 30 dB Rx f0±56MHz ≥ 9 dB Rx f0±112MHz ≥ 30 dB Rx f0±140MHz ≥ 30 dB Tip: Rx f0 is the central frequency of receiving. If Rx f0 is 140 MHz, Rx f0±14MHz indicates that the frequency range is [126 MHz, 154MHz]. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 46 ZXMW NR8250 Product Description 7 Network Configuration NR8250 supports point-to-point, link, tree, and ring networking configurations, as shown in Table 7-1 . Table 7-1 NR8250 Network Configurations Protection Mode Unprotected Hot standby Ring network protection Nodal protection 7.1 Networking Type Network Configuration 1+0 1+0, 2 x (1+0), 3 x (1+0), 4 x (1+0), 5 x (1+0), 6 x (1+0) 1+1 HSB 1+1 HSB, 2 x (1+1 HSB), 3 x (1+1 HSB) 1+1 SD 1+1 SD, 2 x (1+1 SD), 3 x (1+1 SD) 1+1 FD 1+1 FD, 2 x (1+1 FD), 3 x (1+1 FD) Ring network SNCP, RSTP Nodal networking 2 x (1+0) + 2 x (1+1 HSB) 2 x (1+0) + 2 x (1+1 SD) 2 x (1+0) + 2 x(1+1 FD) 4 x (1+0) + (1+1 HSB) 4 x (1+0) + (1+1 SD) 4 x (1+0) + (1+1 FD) N x (1+0) Network Configuration NR8250 supports 1+0, 2 x (1+0), 3 x (1+0), 4 x (1+0), 5 x (1+0), and 6 x (1+0) networking configuration. 7.1.1 Configuration Requirements (Single Site) In N x (1+0) network configuration, the configuration of a single site is as shown in Table 7-2 . Table 7-2 N x (1+0) Network Configuration Compo nents Configuration Requirements 1+0 2 x (1+0) 3 x (1+0) 4 x (1+0) 5 x (1+0) 6 x (1+0) RMU 1 PCS 2 PCS 3 PCS 4 PCS 5 PCS 6 PCS ODU 1 PCS 2 PCS 3 PCS 4 PCS 5 PCS 6 PCS Antenna 1 PCS 2 PCS 3 PCS 4 PCS 5 PCS 6 PCS IF cable 1 PCS 2 PCS 3 PCS 4 PCS 5 PCS 6 PCS ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 47 ZXMW NR8250 Product Description 7.1.2 Configuration Diagram Figure 7-1 shows the diagram of 1+0 configuration. Figure 7-1 1+0 Networking Configuration 7.1.3 Configuration Principle Figure 7-2 shows the principle of 1+0 configuration. Figure 7-2 1+0 Configuration Principle 7.2 RMU Site A RTU RCU Coding Site B RTU RCU Protection Protection ODU Antenna Decoding ODU Antenna RMU N x (1+1 HSB) Configuration 1+1 Hot Standby (HSB) is 1+1 hot standby protection. NR8250 supports 1+1 HSB, 2 x (1+1 HSB) and 3 x (1+1 HSB). During 1+1 HSB configuration, main ODU and standby ODU are installed at the same antenna to provide equipment hot standby protection 7.2.1 Configuration Requirements (Single Site) In N x (1+1 HSB) configuration mode, the configuration of a single site is as shown in Table 7-3 . ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 48 ZXMW NR8250 Product Description Table 7-3 1+1 HSB Configuration Configuration Requirements)(PCS) Components 7.2.2 1+1 HSB 2 x (1+1 HSB) 3 x (1+1 HSB) RMU 2 4 6 ODU 2 4 6 Antenna 1 2 3 IF cable 2 4 6 Combiner 1 2 3 Configuration Diagram Figure 7-3 shows the diagram of 1+1 HSB configuration. Figure 7-3 1+1 HSB Configuration 7.2.3 Configuration Principle Figure 7-4 shows the principle of 1+1 HSB configuration. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 49 ZXMW NR8250 Product Description Figure 7-4 1+1 HSB Configuration Principle RMU Coding Site A RTU Protection ODU RCU Hybrid Antenna Hybrid Antenna RMU Coding Protection ODU Decoding ODU RMU Protection Site B RTU RCU RMU Protection Decoding ODU Active Link 7.2.4 Standby Link Switchover Principle In 1+1 HSB mode, the protection modules of two RMU modules are connected in cascading mode. Normal Operation Status Transmitter: Only main ODU transmits signal while standby ODU on Mute mode. Receiver: Both main and standby are receiving, main path IF module will select the better signal. Swtichover at Transmit End Transmitter: If ODU fails: Main ODU will be on Mute mode while standby ODU transmits signal If RMU fails: Standby RMU performs signal modulation and ODU signal transmission while main ODU remains on Mute mode. Receiver: Main and standby remain unchanged Switchover at Receive End Transmitter: Main and standby remain unchanged. Receiver: Main RMU will select optimum signal automatically. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 50 ZXMW NR8250 Product Description Tip: Based on the switchover priority level, switchover conditions in a descending order are forced switchover, RMU or ODU hardware faults, and alarms on RMU or ODU. 7.3 N x (1+1 SD) Configuration 1+1 Space Diversity (SD) is 1+1 space diversity hot standby protection. NR8250 supports 1+1 SD, 2 x (1+1 SD) and 3 x (1+1 SD). In the 1+1 SD protection mode, the active ODU and standby ODU are installed on different antennas. This enables the system to receive signals from different radio links at the same time, providing full-time hot backup protection for the equipment. 7.3.1 Configuration Requirements (Single Site) In N x (1+1 SD) configuration mode, the configuration of a single site is as shown in Table 7-4. Table 7-4 1+1 SD Configuration Configuration Requirements(PCS) Components 7.3.2 1+1 HSB/SD 2 x (1+1 HSB/SD) 3 x (1+1 HSB/SD) RMU 2 4 6 ODU 2 4 6 Antenna 2 4 6 IF cable 2 4 6 Configuration Diagram Figure 7-5 shows the diagram of 1+1 SD configuration. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 51 ZXMW NR8250 Product Description Figure 7-5 1+1 SD Configuration 7.3.3 Configuration Principle Figure 7-4 shows the principle of 1+1 SD configuration. Figure 7-6 1+1 SD Configuration Principle RMU Coding Site A RTU Protection ODU Antenna RCU RMU Coding Protection ODU Antenna S2 S1 Antenna RMU Protection Site B RTU Decoding ODU RCU Antenna RMU Protection Decoding ODU S1 Link S2 Link Traffic is transmitted from site A to site B. The S1 and S2 in the figure are used to differentiate different antenna locations. 7.3.4 Switchover Principle In 1+1 SD mode, the protection modules of two RMU modules are connected in cascading mode. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 52 ZXMW NR8250 Product Description Normal Operation Status Transmitter: Only main ODU transmits signal while standby ODU on Mute mode. Receiver: Both main and standby are receiving, and the main path IF module will select the better signal. Swtichover at Transmitter Transmitter: If ODU fails: Main ODU will be on Mute mode while standby ODU transmits signal. If RMU fails: Standby RMU performs signal modulation and ODU signal transmission while main ODU remains on Mute mode. Receiver: Main and standby remain unchanged. Switchover at Receiver Transmitter: Main and standby remain unchanged. Receiver: Main RMU will select optimum signal automatically. Tip: Based on the switchover priority level, switchover conditions in a descending order are forced handover, RMU or ODU hardware faults, and alarms on RMU or ODU. 7.4 N x (1+1 FD) Configuration 1+1 Frequency Diversity (FD) provides frequency diversity hot standby protection. NR8250 supports 1+1 FD, 2 x (1+1 FD), and 3 x (1+1 FD). In 1+1 FD protection mode, service can be sent and received through two different frequency points on the same link, which provides full-time hot standby protection for the equipment. This mode reduces link attenuation caused by multi-path reflection and improves link stability. 7.4.1 Configuration Requirements (Single Site) In N x (1+1 FD) configuration, the configuration of a single site is as shown in Table 7-5 Table 7-5 1+1 FD Configuration Components ZTE Confidential Proprietary Configuration Requirements(PCS) 1+1 FD 2 x (1+1 FD) 2011 ZTE Corporation. All rights reserved. 3 x (1+1 FD) 53 ZXMW NR8250 Product Description Configuration Requirements(PCS) Components 7.4.2 1+1 FD 2 x (1+1 FD) 3 x (1+1 FD) RMU 2 4 6 ODU 2 4 6 Antenna 1 2 3 IF cable 2 4 6 Combiner 1 2 3 Configuration Diagram Figure 7-7 shows the diagram of 1+1 FD configuration. Figure 7-7 1+1 FD Configuration Diagram 7.4.3 Configuration Principle Figure 7-8 shows the principle of 1+1 FD configuration. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 54 ZXMW NR8250 Product Description Figure 7-8 1+1 FD Configuration Diagram RMU Coding Site A RTU Protection ODU Hybrid RCU Antenna RMU Coding Protection ODU F1 F2 RMU Protection Site B RTU Decoding ODU RCU Hybrid Antenna RMU Protection Decoding ODU F1 Link F2 Link Traffic is transmitted from site A to site B. The F1 and FS2 in the figure are used to differentiate different frequencies. 7.4.4 Switchover Principle In 1+1 FD mode, the protection modules of the two RMU modules are connected in cascading mode. Normal Operation Status Transmitter: ODUs on active and standby links send signals with different frequencies. Receiver: The active and standby RMUs receive two ways of signals and select the optimal one as the active signal. Switchover at Transmitter Transmitter: ODUs on active and standby links send signals with different frequencies. Receive end: The active/standby state remains unchanged. Switchover at Receiver End Transmitter: Active/standby state remains unchanged. Receiver: RMU selects the signal with optimal quality. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 55 ZXMW NR8250 Product Description Tip: Based on the switchover priority level, switchover conditions in a descending order are forced switchover, RMU or ODU hardware faults, and alarms on RMU or ODU. 7.5 SNCP Ring Networking NR8250 supports Sub Network Connection Protection (SNCP). In SNCP configuration, a special protection route is arranged in advance for a certain subnet connection. Once the subnet fails, the special protection route takes place of the subnet and transmits services for the whole network. SNCP ring network can protect the services transmitted on the microwave link. Tip: SNCP can be configured only in transparent transmission mode. 7.5.1 Configuration Requirements (Single Site) The configuration of a single site is as shown in Table 7-6 . Table 7-6 SNCP Configuration Components 7.5.2 Configuration Requirements(PCS) RMU 2 ODU 2 Antenna 2 IF cable 2 Networking Diagram Figure 7-9 shows the diagram of SNCP networking. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 56 ZXMW NR8250 Product Description Figure 7-9 SNCP Networking Diagram 7.5.3 Networking Principle Figure 7-10 shows the principle of SNCP networking. Figure 7-10 SNCP Networking Principle Subnet 1 Working SNC Working Source Node A Node B Protection Source SNC Source SNC End Subnet 2 Protection SNC Detailed description of the SNCP networking is as follows: The protection path at each transmission direction uses different routes with the working path (only one signal direction is marked in the figure). Node A and Node B exchange services through SNCP. That is, Node A transfers services in bridge mode to Node B through subnet 1 (working SNC) and subnet 2 (protection SNC) respectively. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 57 ZXMW NR8250 Product Description 7.6 Node B selects the service information from one route by using a changeover switch based on the changeover principle. SNCP adopts the working mode of two-route transmission and selective reception. RSTP Ring Networking NR8250 supports Rapid Spanning Tree Protocol (RSTP) ring protection, which protects services through ring network. 7.6.1 Configuration Requirements (Single Site) When RSTP ring network is used, the configuration of a single end is as shown in Table 7-7 . Table 7-7 SNCP Configuration Components 7.6.2 Configuration Requirements(PCS) RMU 2 ODU 2 Antenna 2 IF cable 2 Networking Diagram Figure 7-11 shows the diagram of RSTP networking. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 58 ZXMW NR8250 Product Description Figure 7-11 RSTP Networking Diagram 7.6.3 Networking Principle Figure 7-12 shows the principle of RSTP networking. Figure 7-12 1+1 RSTP Networking Principle Block Site B Service A Service A Site A Site D Site C Generally, the link between site B and site D is blocked and no service is transmitted. In this case, the transmission path of service A is site A-C-D. If either the link between site A and site C or the link between site C and site D fails, the link between site B and site D is unblocked. In this case the transmission path of service A is site A-B-D. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 59 ZXMW NR8250 Product Description 7.7 Nodal Networking NR8250 supports the hybrid configuration of 1+0/1+1 HSB, SD, and FD and supports six directions at most. This networking mode is called Nodal networking. Tip: The following is about 2 x (1+0) + 2 x (1+1 HSB) Nodal networking. 7.7.1 Configuration Requirements (Single Site) In 2 x (1+0) + 2 x (1+1 HSB) networking mode, the configuration of a single end is as shown in Table 7-8 . Table 7-8 2 x (1+0) + 2 x (1+1 HSB) Networking Components 7.7.2 Configuration Requirements(PCS) RMU 6 ODU 6 Antenna 4 IF cable 6 Networking Diagram Figure 7-13 shows the diagram of Nodal networking. Figure 7-13 2 x (1+0) + 2 x (1+1 HSB) Networking Diagram ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 60 ZXMW NR8250 Product Description 7.7.3 Networking Principle Tip: For 1+0 configuration, refer to “7.1.3 Configuration Principle”. For 1+1 HSB configuration, refer to “7.2.3 Configuration Principle”. ZTE Confidential Proprietary 2011 ZTE Corporation. All rights reserved. 61 ZXMW NR8250 Product Description 8 Abbreviations Abbreviation Full Name A ALM Alarm B BER Bit Error Rate D DEM Demodulator DEMUX Demultiplexer DSCP Differentiated Services Code Point E EMC Electro Magnetic Compatibility EOW Engineering Order Wire ETSI European Telecommunications Standards Institute F FD Frequency Diversity FTP File Transfer Protocol H HSB Hot Standby I IEC International Electro technical Commission IDU Indoor Unit IF Intermediate Frequency ITU International Telecommunication Union ITU-R Radio standardization sector of ITU ITU-T Telecommunication standardization sector of ITU M MDI/MDI-X Media Dependent Interface/ Medium Dependent Interface Crossover MTBF Mean Time Between Failure MUX Multiplexing N NE Network Element NMS Network Management System O ODU Outdoor Unit P PM ZTE Confidential Proprietary Power Module 2011 ZTE Corporation. All rights reserved. 63 ZXMW NR8250 Product Description Abbreviation Full Name Q QAM Quadrature Amplitude Modulation QoS Quality of Service QPSK Quadrature Phase Shift Keying R RCU Radio Core Unit RF Radio Frequency RFA Radio Fan Asset RMU Radio Modem Unit RPU Radio Power Unit RSTP Rapid Spanning Tree Protocol RSSI Received Signal Strength Indication RTU Radio Traffic Unit Rx Receiver S SD Space Diversity SFP Small Form-factor Pluggable transceiver SNCP SubNetwork Connection Protection SNMP Simple Network Management Protocol STP Spanning Tree Protocol T TDM Time-Division Multiplexing Tx Transmitter V VLAN ZTE Confidential Proprietary Virtual Local Area Network 2011 ZTE Corporation. All rights reserved. 64
