WipLL Wireless IP-Based Local Loop System Release 2.0.
This product is marked with a CE Mark. This mark has been affixed to demonstrate full product compliance with the following European directives: a) Directive 73/23/EEC - Council Directive of 19/02/1973 on the harmonization of the laws of Member States relating to electrical equipment designed for use within certain voltage limits. b) Directive 89/336/EEC - Council Directive of 3/05/1989 on the approximation of laws of the Member States relating to ElectroMagnetic Compatibility (EMC).
QUESTIONS / COMMENTS If you have questions or comments about this publication, please e-mail to wipll.doc@marconi.com Name Company Tel/Fax/e-mail: Publication Name: My question/comment is: Thank you. Marconi Communications Ltd Marketing Department Catalogue No.
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Contents Contents 1 GENERAL OVERVIEW ............................................................................. 1-1 1.1. Components of the System ................................................................. 1-4 1.1.1. The Subscriber Site .............................................................. 1-5 1.1.2. Base Station Components.................................................... 1-6 1.1.3. Coverage .............................................................................. 1-7 1.2.
WipLL System Description 2.2.1. What is PPMA? .................................................................... 2-7 2.2.1.1. Concept.................................................................. 2-7 2.2.1.2. Slotted Aloha Process............................................ 2-7 2.2.1.3. Packet Transmission.............................................. 2-8 2.2.1.4. Polling Sequence ................................................... 2-8 2.3. Security ....................................................
Contents 4.2.4. Features and Protocols ........................................................ 4-6 4.2.4.1. Features................................................................. 4-6 4.2.4.2. Protocols ................................................................ 4-6 5 BSDU ......................................................................................................... 5-1 5.1. Base Station Distribution Unit ............................................................. 5-1 5.2.
WipLL System Description 6.2.5. Physical Interfaces ............................................................... 6-4 6.2.5.1. Connectors:............................................................ 6-4 6.2.5.2. Communication Interfaces: .................................... 6-4 6.2.6. Features and Protocols ........................................................ 6-4 6.2.6.1. Features................................................................. 6-4 6.2.6.2. Protocols ..................................
Contents 8.5.2. Front Panel ....................................................................... 8-11 8.6. System Controller Module ............................................................ 8-12 8.6.1. Front Panel ....................................................................... 8-12 8.6.2. Main Functions.................................................................. 8-13 8.6.3. Host Communication......................................................... 8-14 8.7.
WipLL System Description Figures Figure 1-1: Typical Wipll System Partitioning ....................................................... 1-2 Figure 1-2: Typical WipLL System ........................................................................ 1-3 Figure 1-3: Typical Subscriber Configuration........................................................ 1-5 Figure 1-4: Base Station Units .............................................................................. 1-6 Figure 1-5: Base Station Covering 360° ....
Contents Figure 8-6: BSPS DC Distribution Rack - Front Panel........................................... 8-8 Figure 8-7: BSPS DC Distribution Rack - Rear Panel ........................................... 8-8 Figure 8-8: BSPS Rectifier - Simplified Block Diagram....................................... 8-10 Figure 8-9: BSPS Rectifier Module - Front Panel ............................................... 8-11 Figure 8-10: BSPS System Controller - Front Panel...........................................
WipLL System Description Tables Table 4-1: Antenna Unit Connectors..................................................................... 4-5 Table 4-2: BSR and MAC Specifications .............................................................. 4-7 Table 4-3: BSR Agency Certification .................................................................... 4-8 Table 4-4: BSR Network Specifications ................................................................ 4-8 Table 4-5: BSR Power Requirements.................
Contents Glossary ACK ................................ Acknowledge API .................................. Application Program Interface BER ................................ Bit Error Rate BSDU .............................. Base Station Distribution Unit BSPS .............................. Base Station Power System BSR ................................ Base Station Radio CLI .................................. Call Level Interface CRC ................................ Cyclic Redundancy Check CROL ............
WipLL System Description NOC ................................ Network Operations Centre ODBC ............................. Open Database Connectivity PING ............................... Package Internet Groper PMPT .............................. Point-to-Multi-Point PPMA ............................. Pre-emptive Polling Multiple Access PPP ................................. Point to Point Protocol QoS ................................ Quality of Service RCCB .............................
1 Chapter GENERAL OVERVIEW WipLL is a broadband fixed cellular Wireless Access system. It provides an "all-inone" broadband access solution for operators and network service providers supporting data applications including "toll quality" telephony service1 over a single integrated platform. WipLL utilizes air protocol that enables one of WipLL's unique features - the ability to recognize the type of the transmission and assign bandwidth and other resources accordingly.
WipLL System Description Subscriber Site Subscriber Site Subscriber Site Subscriber Site Subscriber Site Subscriber Site Subscriber Site Base Station Site Base Station Site Base Station Site Base Station Site Non WLL Users Non IP Systems Network Operating Centre Figure 1-1: Typical Wipll System Partitioning WipLL provides a radio link between the end-user of the telecom network (the subscriber) and the network itself to give high-speed data access.
Chapter 1 - GENERAL OVERVIEW through radio to its local base station. The base station then links through an Ethernet connection to datacom or IP network. Each local base station serves numerous subscribers in its vicinity. The WipLL components at the subscribers' premises and at the base stations can be remotely controlled and configured by a management system using Simple Network Management Protocol (SNMP). Figure 1-2 shows a diagram of a Typical WipLL installation.
WipLL System Description Voice over IP 1.1. Components of the System The WipLL system comprises three main components as indicated in Figure 1-1: 1) Subscriber site 2) Base station 3) Coverage 1.1.1. The Subscriber Site Each subscriber site contains Subscriber Premises Equipment (SPE) that links the subscriber to the WipLL system.
Chapter 1 - GENERAL OVERVIEW The following drawing shows a current typical subscriber site installation: SPR Subscriber Adapter Video Conferencing Figure 1-3: Typical Subscriber Configuration 1.1.2. Base Station Components Each base station site contains several components that enable: Connection to telecom system Internal switching of traffic Power supply Radio communications.
WipLL System Description BSR BSR BSR BSR BSR BSR 48 VDC 10 base-T BSDU Management Power Supply 100 base-T Wide Area Network Connection DS1 DS3 ATM Other Figure 1-4: Base Station Units A BSR can maintain a 4 Mbit air link with customers in its sector (net throughput of 3.2 Mb/s). A single base station has a capacity of up to 96 Mb/s and can support up to 3024 customer sites.
Chapter 1 - GENERAL OVERVIEW The BSR can transmit and receive through a 60 degree sector. To cover a full 360 degree sweep, requires six BSRs at the base station which will comprise six sectors each covered by a BSR. o 60 sector Area covered by the base station = Base Station Radio (BSR) Figure 1-5: Base Station Covering 360° Not all six sectors need be equipped.
WipLL System Description o 60 sector = Base Station Radio (BSR) Figure 1-7: Base Station with Complete BSR Redundancy Alternatively, the base station can have up to twenty-four BSRs, each covering 60 degrees. This allows either: Complete BSR redundancy with two or more BSRs covering each sector - see Figure 1-7 or Partial sector overlap with each layer of BSRs offset to the one above it - see Figure 1-8. This gives more capacity in areas where high demand requires more bandwidth.
Chapter 1 - GENERAL OVERVIEW Figure 1-8: Base Station Sector 1.2. Management, and Commissioning WipLL uses two tools for management and commissioning both implemented as software programs: The WipLL network management tool - WipManage WipConfig Further information on the use of these tools can be found in the Operations and Maintenance Manual.
WipLL System Description 1.2.1. WipManage WipManage™ is the primary WipLL network management tool for every WipLL unit. It enables: Configuration Fault isolation Performance monitoring Software upgrade WipManage can access each unit in the system and manage it remotely using standard SNMP protocols for communicating with the WipLL unit, private and standard MIBs for setting and retrieving parameters from the units.
Chapter 1 - GENERAL OVERVIEW Use of inputs from either a .CFG file that is produced by a database application or manually by typing the parameters into the appropriate fields of the program. Configuration and monitoring of the WipLL units via a serial or Ethernet port. It supports Microsoft Windows 9x and Windows 2000 platforms.
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2 Chapter MAIN FEATURES, PROTOCOL AND QoS The WipLL system is designed to provide internet access and telephony service using spread spectrum frequency hopping technology to minimize interference in the 2.4 GHz ISM, 3.5 GHz band, and 4GHz bands Data is transmitted as Internet Protocol (IP) packets. Each packet is divided into fragments, and fragments can be repeated several times to ensure Quality of Service (QoS). Other techniques such as CRC and space diversity further enhance the system performance.
WipLL System Description Leverages new technologies and applications. Built-in security features. 2.1.2. Operator Perspective Very efficient network due to: Single access platform for multiple applications. Bandwidth used only when there is real data to transmit. Shared bandwidth between users. No dedicated bandwidth to customer but capabilities to ensure throughput to the users. Uncommitted direction of transmission, no need to commit to full duplex.
Chapter 2 - MAIN FEATURES, PROTOCOL AND QoS 2.1.5. Configuration Integrated IP router. Single outdoor box solution, i.e. no external SPR antennas or RF cables. Up to 100 meters of standard category 5 cable from the radio unit to the indoor adapter. Standard 10Base-T interface to the subscriber site and 100Base-T interface to the network backbone. 2.1.6. Installation and Commissioning Easy installation and commissioning – using the WipConfig tool. Real time signal strength indication.
WipLL System Description • All installed units are installed with a separation distance of at least 2 meters from all person during normal operation. • Both the BSR and SPR (as well as antenna) must be mechanically and electronically isolated from and not co-located with any other antenna or transmitter. 2.1.7. Security Login process with authentication mechanism. Data scrambling using public and private keys. 2.1.8.
Chapter 2 - MAIN FEATURES, PROTOCOL AND QoS 2.1.9. Radio Communications Frequency hopping spread spectrum system (FH-CDMA). Integrated antenna diversity in a single box. The BSR also has an N-Type connector for attaching an optional 3rd-party external antenna i.e. omni-antenna for 360º coverage by a single BSR.1 Variety of antenna types, internal and external. Configurable maximum output power – up to 27dBm.
WipLL System Description Software upgrade of every WipLL unit using TFTP. Support for standard IP protocols – ARP, DHCP relay, TFTP, ICMP, and SNMP. 2.1.11. System Parameters Temperature range of –30ºC to +60ºC. Compliance with ETSI and FCC Regulations. 2.1.12. RF This environment consists of point to multi-point directional antennas pointing towards the base station. Distances between stations and the base station may differ. Some may be near while others may be far away.
Chapter 2 - MAIN FEATURES, PROTOCOL AND QoS Allowed packet loss rate that applications can sustain. Bandwidth for the application - video requires constant signal flow: Packets are generated usually every 30ms. (depending on the Residential Access Gateway (RAG) and sampling rate) Requires minimal delay. Silence suppression – no packets 2.2. PPMA Protocol This section describes the Pre-emptive Polling Multiple Access (PPMA) protocol.
WipLL System Description From time to time (and not exceeding every 100mS) the BSR sends a "Channel Clear" message which is an invitation for SPRs to send the score of their requirements. It then waits for a while and receives these requirements from the SPRs. The waiting time is called Slotted Aloha due to the fact that the BSR waits for a time that is equivalent to 16 messages of "Request to Send" (RTS).
Chapter 2 - MAIN FEATURES, PROTOCOL AND QoS Polling of SPRs can happen according to the information gathered during the Slotted Aloha process or in a periodic manner – every few milliseconds – regardless of the Slotted Aloha process depending on the application transmitting data at the time. The polling sequence of data applications is managed by the BSR based on the information gathered during the Slotted Aloha process.
WipLL System Description of users, etc. The SPR then sends its own information to the BSR. It is then considered as being "associated" with the BSR and can start sending and receiving messages from it. In case the SPR is not included in the "Allowed SPR" list or the address it provides for the BSR is incorrect no message will be sent to it and the association process will be terminated. 2.4.
Chapter 2 - MAIN FEATURES, PROTOCOL AND QoS 5) Session type - VoIP 2.5. Echo Management Packet based systems are likely to introduce more delay (and variable) than circuit switched systems. Increased delay could present quality problems with time bounded services such as voice communication.
WipLL System Description PSTN has traditionally been a low delay network and has not bothered with echo cancellation, at least in smaller countries, if the round trip delay is below 50ms. Echo cancellers are used in international calls between different PSTNs. The key principle is that the network that causes the echo should cancel it. Applying this principle to the introduction of IP based WLL systems means that echo should be handled in the access system.
3 Chapter APPLICATIONS AND SERVICES WipLL can be installed in several configurations to support different required applications. The following paragraphs discuss some of the applications and services that can be provided with WipLL. 3.1. Applications 3.1.1. Fixed Cellular Access System Typically WipLL is used as a broadband fixed wireless access system.
WipLL System Description Figure 3-1: WipLL Cell Subscriber Premises Radios (SPRs) are normally installed on a rooftop or a wall which has a direct line of sight to the base station radio (BSR) and are pointed towards the nearest base station or the base station that was assigned according to the pre-planning of the site. Base stations typically contain several BSRs for providing a full (360º) coverage as well as enough capacity to accommodate the requirements of subscribers.
Chapter 3 - APPLICATIONS AND SERVICES Important!! o BSR-2.4 and SPR-2.4 outdoor units with internal antennas should be installedONLY by experienced installation professionals who are familiar with localbuilding and safety codes and, wherever applicable, are licensed by the appropriate government regulatory authorities. Failure to do so may void theMARCONI product warranty and may expose the end user or the service providerto legal and financial liabilities.
WipLL System Description Figure 3-2: WipLL Coverage Planning 3.1.3. Remote Base Station Backhaul Occasionally, when base stations are providing services to a small number of subscribers or when large capacity is not required, WipLL SPRs and BSRs can be used for backhauling. Such configurations can be considered in most cases as a point-to-point (PTP) connection.
Chapter 3 - APPLICATIONS AND SERVICES Figure 3-3 shows a typical backhauling of a base station using WipLL. Figure 3-3: WipLL Backhauling Remote base stations are typically required when the main base station sites cannot cover an area due to lack of line-of-sight or when the distance exceeds the capability of the radios to provide services. It is recommended that a maximum of two hops be used between a main base station and a subscriber site.
WipLL System Description 3.1.3.1. Indoor Coverage (Not for use in North America) In many applications there is a need to provide access to users located in the lower floors of a building. These users usually do not have a direct line-of-sight with a base station. WipLL can be used for indoor coverage for apartment buildings and office areas.
Chapter 3 - APPLICATIONS AND SERVICES 3.2. Services 3.2.1. Broadband Data Access Using a standard PSTN modem in circuit-switched networks customers are limited to 56Kbps of throughput and in most cases to 28.8Kbps. From the operator's perspective once a customer has dialed with a PSTN modem a full 128Kbps channel is occupied for as long as the session lasts. With WipLL customers are limited only by configuration, with a maximum of 4Mbps, 50 times faster than the fastest PSTN modem.
WipLL System Description WipLL can also distinguish between applications and users, thus enabling the operator to provide different class of service to users. For example, it can provide different services to web browsing and email, prioritizing web browsing for ensuring best "Internet experience". 3.2.3. Private Networks WipLL allows the configuration for providing connectivity to branch offices.
Chapter 3 - APPLICATIONS AND SERVICES 3.2.4. Remote Access WipLL is very suitable for tele-workers who require high speed access combined with private network and flexible configuration. The interface to the system is 10Base-T and enables seamless configuration between office and remote location. 3.2.5.
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4 Chapter BSR 4.1. Base Station Radio A BSR is the centre of a WipLL sector. It has several roles in both the MAC layer as well as in the networking and transport layers. In the MAC layer the BSR is responsible for synchronizing the SPRs in terms of frequency hopping sequence. At the network layer the BSR performs routing functions between the base station's Ethernet network and the wireless stations, containing a routing table that can support up to 126 stations addresses.
WipLL System Description connection to up to 3,024 discrete subscriber sites, however such a configuration would require a bandwidth allocation of at least 75 MHz. Figure 4-1: Typical BSR Installation 4.1.1. BSR Default Accessories Mechanical mounting kit. Each BSR comes with a kit for mounting the unit on a pole with means for tilting. Data connector. A DB15 connector with waterproof cover included with the BSR.
Chapter 4 - BSR 4.2. Network Management The BSR is managed using SNMP and standard proprietary MIBs for the specific configurations of the BSR 4.2.1. Capabilities Configuration - network parameters (IP address, ports, routing tables, etc.), RF parameters (frequency tables, allowed CS, etc.) Traps - sends traps as per configuration. Fault management - debugging options. Counters - for statistics on packet loss.
WipLL System Description 4.2.2. Physical Interfaces DB15 connector - power, Ethernet, sync and serial. DB9 connector - for serial interface.
Chapter 4 - BSR Table 4-1: Antenna Unit Connectors 9 Pin Communications Connector 15 Pin Data/Power Connector 1 nc 1 + VIN F 2 Rx 2 - VIN F 3 Tx 3 Ethernet Tx + 4 nc 4 Ethernet Tx - 5 Ground 5 Ethernet Rx + 6 nc 6 Ethernet Rx - 7 Ground 7 nc 8 nc 8 nc 9 +5vDC 9 +VIN F 10 - VIN F 11 VCC 12 GND 13 nc 14 232 Rx 15 232 Tx 4.2.3. Communication Interfaces Ethernet, 10Mbps. Serial, RS-232.
WipLL System Description 4.2.4. Features and Protocols 4.2.4.1. Features Synchronization of hops between BSRs. Software upgrade - with TFTP. Static routing tables - 16 entries per each SPR plus 32 entries for the Ethernet side, total 256 x 16 entries - 4096 routing entries. QoS - proprietary. Network management - SNMPv2 Multiple concurrent open sessions - up to 50 4.2.4.2.
Chapter 4 - BSR Table 4-2: BSR and MAC Specifications Parameter Operating frequency range Rel 1.2 Rel 1.4 Value Comment 2.4 – 2.5GHz 3.4 – 3.6GHz Spectrum spreading method Frequency hopping CDMA 2.4GHz 3.5GHz Per ETSI EN300 328 ETS 300 328 EN 301 253 Duplex method Time division (TDD) - 2.4GHz Transmit bit rates Up to 4Mbps BER and distance dependent.
WipLL System Description Table 4-3: BSR Agency Certification Parameter Value Emissions / Immunity EN 300 339 EN 300 386-2 ETS300 328 Safety EN / IEC 60950 Environmental ETS 300 019-2-x Comment Table 4-4: BSR Network Specifications Parameter Value Filtering Rate 10500 Frames / sec Forwarding Rate 1400 Frames / sec Routing table length 64 x 16 Data open-sessions per BSR 50 Comment Table 4-5: BSR Power Requirements Parameter Value Voltage Minimum: Maximum: 48Vdc nominal 30Vdc 55Vdc A
Chapter 4 - BSR Table 4-7: BSR Network Interface Parameter Value Ethernet Network UTP EIA/TIA Standards Compliance ANSI/IEEE 802.3 and ISO/IEC 8802-3 10 Base-T compliant Serial Port RS-232 Comment Category 5 Table 4-8: BSR Physical Dimensions Parameter Value Height 400mm Width 317mm Depth 65.5mm Weight 4.
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5 Chapter BSDU 5.1. Base Station Distribution Unit The Base Station Distribution Unit (BSDU) is a major building block of the base station. It performs the main indoor functions of the WipLL base-station. This mainly refers to the interfacing function between the Base Station Radios (BSRs), the Wide Area Network (WAN) and the DC power system. Figure 5-1: The WipLL BSDU The functions implemented by the BSDU in the WipLL system's base station are: Data switching.
WipLL System Description × DB15 connectors for connecting to each of the BSRs, cables and connectors for connecting to other BSDUs plus mechanical brackets for mounting the BSDU unit in a 19" rack 5.2. Network Management 5.2.1. Management Information Base Standard Management Information Base (MIB) - Ethernet, switch. From WipLL Release 1.4, WipManage also controls the BSDU using SNMP. Marconi proprietary MIBS for managing the frequency hopping 5.2.2.
Chapter 5 - BSDU 5.3.2. Communication Interfaces Fast Ethernet, 100Base-T Ethernet, 10Mbps. Serial, RS-232. 5.4. Features and Protocols 5.4.1. Features Software upgrade - with TFTP. Network management - SNMPv2 5.4.2. Protocols ARP TFTP ICMP SNMP 5.5. Table of Specifications - BSDU 5.5.1. Network Specifications Filtering rate - 105 000 frames / sec. Forwarding rate - 62 500 frames / sec.
WipLL System Description 5.5.2. Power Requirements Voltage- 48v DC nominal Power consumption - Maximum 300W (including the feeding of 6 × BSRs) 5.5.3. Environmental Conditions Operating temperature 0ºC to +50ºC Storage temperature -40ºC to +80ºC 5.5.4. Network Interface Ethernet Network - RJ45: UTP EIA/TIA - Category 5 5.5.5. Standards Compliance ANSI/IEEE 802.3, ISO/IEC 8802-3 10/100 Base-T compliant Serial port - RS-232 5.5.6.
6 Chapter SPR 6.1. Subscriber Premises Radio The subscriber site typically includes a Subscriber Premises Radio (SPR) and a Subscriber Data Adapter (SDA). Figure 6-1 shows a typical SPR installation.
WipLL System Description SPR Subscriber Adapter Video Conferencing Figure 6-2: Typical Subscriber Site 6.2. SPR/BSR Communications The SPR transmits and receives data to and from the base station. It is typically located on the roof or external wall of the subscriber premises. The SPR has the reference number of the Base Station Radio (BSR) coded into it. This prevents the SPR from being removed and placed at a different location without authorisation. The SPR contains a high-gain directional antenna.
Chapter 6 - SPR The SPR is connected to the wired network through an SDA supplied with WipLL Release 1.4, with a 10Base-T Ethernet connection which allows a cable length of up to 100 meters. The capacity of each SPR is up to 4Mbps. 6.2.1. SPR Configurations Different versions of the SPR are available. Options include different mechanical, memory and antenna beam span configurations. 6.2.2. SPR Standard Accessories Mechanical mounting brackets - for mounting the units on a wall.
WipLL System Description 6.2.4. Capabilities Configuration - network parameters (IP address, ports, routing tables, etc.), RF parameters (frequency tables, allowed BSRs, etc.). Traps - send traps as per configuration. Fault management - debugging options. Statistical counters - for packet loss, etc. 6.2.5. Physical Interfaces 6.2.5.1. Connectors: DB15 - power, Ethernet and serial. DB9 - serial interface. 6.2.5.2. Communication Interfaces: Ethernet - 10 Mbps. Serial - RS-232. 6.2.6.
Chapter 6 - SPR QoS - Proprietary. Network management - SNMPv2 Concurrent open sessions - 50 6.2.6.2.
WipLL System Description Table 6-1: Radio and MAC Specifications Parameter Value Operating frequency Release 1.2 Release 1.4 2.4 GHz 2.4 GHz Spectrum spreading method Frequency hopping CDMA Duplexing Method Time Div. Duplex (TDD) 2.4GHz Comment Per ETSI EN300 328 Transmit Bit Rates Up to 4Mbps BER and distance dependent Channel spacing at 1, 2 and 3Mb/s 1MHz Will be configured at the factory.
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WipLL System Description Table 6-3: Network Specifications Parameter Value Filtering rate 10500 frames / sec Forwarding rate 1300 frames / sec Routing table length 16 Comment Table 6-4: Power Requirements Parameter Value Comment Voltage Minimum Maximum 48Vdc nominal 30Vdc 55Vdc Fed from either the SDA Consumption Maximum 500mA Table 6-5: Environmental Considerations Parameter Value Operating temperature Outdoor units (BSR,SPR) -30ºC to +60ºC Storage temperature -40ºC to +80ºC Comm
Chapter 6 - SPR Table 6-7: SPR Physical Dimensions (w/o High Gain Antenna) Parameter Value Height 311mm Width 244mm Depth 65.5mm Weight 2.5kg Comment Excluding mounting kit Table 6-8: SPR Physical Dimensions (with High Gain Antenna) Parameter Value Height 400mm Width 317mm Depth 65.5mm Weight 4.7kg Comment Excluding mounting kit Note: The cable and connector are the same as for the base station.
WipLL System Description 6.3. Interface Connectors Figure 6-3 and Table 6-9 detail the pin configuration for the SPR interfaces.
Chapter 6 - SPR Table 6-9: SPR Connectors 9 Pin Communications Connector 15 Pin Data/Power Connector 1 nc 1 + VIN F 2 Rx 2 - VIN F 3 Tx 3 Ethernet Tx + 4 nc 4 Ethernet Tx - 5 Ground 5 Ethernet Rx + 6 nc 6 Ethernet Rx - 7 Ground 7 nc 8 nc 8 nc 9 +5vDC 9 +VIN F 10 - VIN F 11 VCC 12 GND 13 nc 14 232 Rx 15 232 Tx The cable run must be mechanically protected and supported at maximum 1 meter intervals in a 20mm galvanised steel flexible conduit for external runs and in 20mm
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7 Chapter Customer Interface Adaptors 7.1. General WipLL uses Internet Protocol (IP) to communicate between subscribers. Analog telephony signals are also converted to IP packets at the subscriber’s side, and back to PSTN signaling by IP Telephony Gateways. WipLL subscriber units contain the client-side IP Telephony gateway. The PSTN gateway can be located anywhere within the network. 7.1.1. Configurations WipLL's subscriber data and telephony adapter is located at the subscriber premises.
WipLL System Description protection and data connection to the SPR. It connects to the main power and includes LEDs for display of network connection and data traffic. The SDA box can be wall mounted, in a communications closet or sited on a desk. 7.2.1. SDA Specifications Dimensions: 150mm Height x 150mm width x 58.5mm depth Weight: .
Chapter 7 - Customer Interface Adaptors Figure 7-1: Subscriber Data Adapter (SDA) The SDA includes lightning arrestors to protect the customer's local network from lightning. The SDA is connected to a standard power outlet (110-240vAC). The units are generally installed indoors in a communications cabinet or mounted on a wall. An SDA can also be placed on a table or shelf next to the customer's communications equipment. Table 7-1 illustrates the data connector pinouts.
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8 Chapter Chapter BSPS The Marconi Base Station Power System (BSPS) supplies the following: • Provides off-line power to sensitive equipment • Charges the battery bank that provides backup power during a mains failure. Thus, this system is essentially a DC-UPS with a battery connected to it. The size of the battery determines the backup and charging time. Since the system is current limited, the maximum battery size is based on that limit.
WipLL System Description 8.1. General -48V MAINS c.sharing Rectifier Rectifier Rectifier V-Control ALARM LOAD VOUT DUAL - LVD POWER SYSTEM CONTROLLER I - LOAD I - SUPPLY SUPPLY SHUNT RS232 LOAD SHUNT DRY CONTACT- IN TEMPERATURE Figure 8-1: BSPS Block Diagram As shown in Figure 8-1, 3 rectifiers (or more) are chained in parallel to provide the current capacity needed. The output voltage of the rectifiers feeds the load and charges the batteries through the dual LVD.
Chapter 8 - BSPS Another bus (ALARM) sends the information of a faulty rectifier module to the system controller. Two accurate shunt-resistors are contained in the system to monitor the load and the total current. The battery current is then calculated by the controller to be the difference between the two. Two temperature sensors are connected to measure the battery temperature. The average temperature is calculated and demonstrated.
WipLL System Description 8.2.2. Front Panel Figure 8-2: BSPS Main Rack - Front Panel The following components are illustrated in Figure 8-3: 1) Adjustable 19”mounting flange 2) Rectifier module 3) System controller module 4) Line breaker 5) Battery breaker 6) Load breakers 8.2.3.
Chapter 8 - BSPS 3) COMM - data and communication connection for extension rack 4) P.S. EXT - DC connection to the extension rack 5) LVD BYPASS - connection for the DC distribution rack 6) TEMP SENSOR - temperature sensor terminals (four wires) 7) GND - Ground terminal Figure 8-3: BSPS Main Rack - Rear Panel 8.3. Extension Rack (optional) 8.3.1. Overview The extension rack is optional and is used only for getting more power from the system. It can house up to 6 rectifiers.
WipLL System Description 8.3.2.
Chapter 8 - BSPS 8.3.3. Rear Panel Figure 8-5: BSPS Extension Rack - Rear Panel The following are the components specified in Figure 8-5: 1) LINE IN - AC line input terminations 2) COMM - data and communication connection to the main rack 3) P.S. EXT - DC connection to the main rack 4) GND - Ground terminal 8.4. DC Distribution Rack (optional) 8.4.1. Overview This section is optional and provides more circuit-breakers (CB's) for the sake of distributing the output current to more separate consumers.
WipLL System Description The distribution rack also contains the terminations for connecting to other parts of the system (main and extension racks). 8.4.2. Front Panel Figure 8-6: BSPS DC Distribution Rack - Front Panel 8.4.3.
Chapter 8 - BSPS 8.5. Basic Rectifier Module The PFC50-6 rectifier module is the heart of the Full-Redundancy 48VDC power system. It is a plugged-in module designed specifically for modular systems. The power factor correction (PFC) device at the input enables clean, stable, sinusoidal current consumption from the mains. This converter produces a 382VDC output, which is then converted to the 50V output. A current sharing circuit is responsible for current sharing among the rectifiers.
WipLL System Description 8.5.1.
Chapter 8 - BSPS 8.5.2. Front Panel Figure 8-9: BSPS Rectifier Module - Front Panel Table 8-1: Rectifier Specifications INPUT OUTPUT Voltage 90VAC to 270VAC Current (nominal) 1.6A @ 230V / 3.2A @ 115V Frequency 47Hz to 63Hz Power factor (nominal line/load) ≥ 0.993 Inrush current (at 25°C ambient) < 65A@230V / 33A@115V Voltage (default) 53.5VDC Regulation (line & load) (1) ± 0.
WipLL System Description Ripple & noise 50mVp-p 8.6. System Controller Module 8.6.1.
Chapter 8 - BSPS LVD - Low Voltage Disconnect circuit is open (battery is disconnected, red) BATT - Battery test passed (green) FAULT - General alarm fault (red-continuous), Faulty rectifier (red-blinks) BATT TEST - Manual battery test, use a pencil tip to initiate ALARM OFF - Silences the internal buzzer, use a pencil tip RESET - Resetting the controller, use a pencil tip RS232 - Connector for the host 8.6.2.
WipLL System Description 12) Abnormal condition detection (AC, DC, battery, over-temperature etc.) 8.6.3. Host Communication The detailed protocol of communication is described in section 8.7 Communication Protocol & Data, page 8-14. The RS232 plug, located at the front panel is used for the connection with the host. pin assignment for the DB9 connector is as follows: COM RS232 Tx Rx 5 1 9 6 Figure 8-11: DB9 Connector 8.7.
Chapter 8 - BSPS 9) Upon a reception of a header start (0xAC) there will be a start of a reception window 500mSec long. In case that a valid packet has been received it will be processed. Otherwise, the controller will initialize the reception counter. This protocol provides the user with the ability of controlling the power system parameters as well as retrieving data and status from the system. 8.7.1. Master The master sends its packet including header, opcode, data, checksum and termination.
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9 Chapter Appendix 9.1. New Features – Release 2.0.1 S/N Feature Remarks 1 9.2. New Features – Release 1.4 S/N Feature Remarks 2 BSPS Provides power to the Base Station 3 Improved QoS Eight (8) priorities 4 Bandwidth limitations Each SPR may have a max.
WipLL System Description 9.4. Improved Quality of Service (QoS) QoS is the ability to recognize the type of transmission and assign optimal resources accordingly. This is especially important for VoIP applications, that are sensitive to delay and jitter and should therefore be prioritized over other applications. QoS is used for packets leaving the SPRs towards the BSR as well as among SPRs making sure that the BSR assigns the correct priority to the correct SPR. WipLL 1.
Chapter 9 - Appendix that is set to a maximum of 256Kbps can reach a maximum bandwidth significantly larger than the maximum standard bandwidth of an SPR set to a 64Kbps. 9.6. SNMP support for BSDU The BSDU is a major building block in a base station site. As such it is required to be remotely managed by WipManage. As part of release 1.4, WipManage now supports the BSDU that has an SNMP agent and supports Management Information Base II (MIB-II) and private MIB. 9.7.
WipLL System Description range of 192.168.0.0 does not have to change IP addresses in the network when installing WipLL. 9.9. Default configurations via WipConfig & WipManage In order to simplify WipLL’s configuration and installation, release 1.4 provides 2 layers of default configurations for SPRs: 1. Customer defaults – located in ROM and loaded during manufacturing. These parameters are customer specific. 2.
Chapter 9 - Appendix Class B range: 172.16.0.0-172.31.0.0 Class C range: 192.168.1.x-192.168.254.x The advantages of using these numbers on the inside of the firewall are twofold: Internal IP networks can now be “grown” without fear of running out of addresses There is no longer a risk of inadvertantly using other networks’ legitimate addresses. For example, if arbitrarily using the Class C range of 192.31.7.
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INDEX System Controller, 8-12 BSR Redundancy, 1-8 BSRs IP addresses of air ports of, 9-3 A Audio/visual alarm, 8-3 B C Base Station, 9-1 Distribution Unit, 1-6, 5-1 Giving Partial Cover, 1-8 Power System, 9-1 Radio, 1-6, 1-7, 5-1, 6-2 Sector, 1-9 Site, 1-1 Units, 1-6 Basic Rectifier Front panel of, 8-11 Batteries, 8-2 Battery, 8-1, 8-3, 8-7, 8-13 bank, 8-1 circuit breakers, 8-3 size, 8-1 temperature, 8-3 test, 8-13 manual, 8-13 BSPS Block Diagram, 8-2 DC Distribution Rack, 8-8 Extension Rack, 8-6, 8-7 Ma
WipLL System Description H P Housing development, 1-8 P.S.
INDEX Rectifier status, 8-6 Rectifiers, 8-2, 8-5, 8-9 Release 1.
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