ADC Telecommunications DAS8M-4IDEN-W In-building distributed antenna system User Manual J bonnie john front cover eps
ADC Telecommunications Inc. In-building distributed antenna system J bonnie john front cover eps
Contents
Part 2 users manual
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| Document ID | 93114 |
| Application ID | 1hXBBq/w+GrEdvMpUyih1g== |
| Document Description | Part 2 users manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 255.81kB (3197684 bits) |
| Date Submitted | 2000-03-24 00:00:00 |
| Date Available | 2000-06-27 00:00:00 |
| Creation Date | 2000-01-24 10:57:02 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2000-01-24 10:58:00 |
| Document Title | J:\bonnie\john\front cover.eps |
| Document Creator | FrameMaker 5.5P4f |
LGCell Equipment This section describes the LGCell equipment and explains how the system operates and contains LGCell system specifications. For details about cables and connectors, refer to Appendix A – Cables, Connectors, and Accessories. LGCell has no user-serviceable parts. Faulty or failed units may be repaired or replaced through LGC Wireless. In the U.S., please contact us at 1-800-530-9960. International customers, please contact us at +1-408-487-2400. Contents LGCell Equipment Standard Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Main Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Expansion Hub. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Remote Antenna Unit (RAU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 LGCell System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Band Selective Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2-2 LGCell Equipment Standard Equipment The LGCell standard equipment supports 800 MHz AMPS/TDMA/CDMA/iDEN, 900 MHz GSM, 1800 MHz DCS, 1800 MHz Korean PCS, 1900 MHz TDMA/ CDMA/GSM, and Dual Band 900 GSM/1800 DCS installations. LGCell has three modular components: • Main Hub – 19” rack-mountable • Expansion Hub – 19” rack-mountable • Remote Antenna Units (RAUs) – Wall or ceiling mountable LGCell is shipped with the following items: • Four rack-mount screws per hub • Four screws for each RAU • LGCell Installation and Reference Manual For cable and accessory information, see Appendix A – Cables, Connectors, and Accessories. Main Hub The Main Hub is the LGCell’s central distribution point. It receives downlink cellular or PCS signals from an MBS or a roof-mounted antenna and redistributes them to multiple Expansion Hubs in low-frequency signal format (<200MHz), which can be passed over the MMF and CAT 5 cabling. 2-3 The Main Hub also receives signals from the Expansion Hubs and reconverts them back to the cellular or PCS band for transmission on the uplink channel (mobile) to the macrocellular base station (BTS) or microcellular base station (MBS). The Dual Band 900/1800 Main Hub is shown below. Main Hub Features 2-4 • Mounts in a standard 19” equipment rack, width 17.25” (438 mm) • Height is 1.7” (44.5 mm). The Dual Band Main Hub is 3.5” (88.9 mm) high. • Operates with worldwide AC power, 100-240 VAC at 1.6 A and 50/60 Hz • Connects up to four Expansion Hubs and 16 RAUs per Main Hub. The Dual Band Main Hub connects up to four Expansion Hubs and 16 RAUs for the 900 system and an equal number for the 1800 system. • Connect multiple Main Hubs to increase number of RAUs. See “Connecting Multiple LGCell Systems” on page 3 in Section 5, Connectivity. • Connects to a roof-mounted antenna, repeater, or duplexed MBS via one coaxial cable using an N-type, female, duplexed, bi-directional RF connector • Connects to MBS via two coaxial cables using two N-type female, simplex RF connectors • Connects to Expansion Hubs via MMF fiber cable (up to 1 kilometer) • Distributes cellular or PCS signals to the Expansion Hubs via standard MMF transmit and receive pairs • Has easily accessible connectors LGCell Equipment • Displays system status via front panel LEDs • Provides contact closure of major alarms and error latches through a D-sub 9-pin connector Main Hub Front Panel 6 5 Front Panel Description 1 AC power cord connector 2 Power On/Off switch 3 One LED for sync status (labeled SYNC) 4 One LED for power (labeled POWER) 5 Four Ports (labeled 1, 2, 3, 4) •One standard female ST-connector for MMF downlink (labeled DOWN) •One standard female ST-connector for MMF uplink (labeled UP) 6 One LED for port RF link status (labeled LINK STATUS) 7 One LED for port sync status (labeled SYNC) The Dual Band Main Hub Front Panel is shown below. The connectors are the same as those explained for the single band system. 2-5 Standard MMF Uplink and Downlink Ports The Main Hub transmits and receives RF signals to and from the Expansion Hubs using up to 1 kilometer of industrystandard 62.5µm/125µm MMF cable (up to 1.5 dB optical loss, approximately 1 kilometer without jumpers). •Uplink/Input (labeled UP) This signal is the combination of all uplink signals received by the Expansion Hubs connected to the system. •Downlink/Output (labeled DOWN) The downlink is a composite signal coming from the duplexed N-type connector or from the downlink simplex connector on the Main Hub back panel. The downlink signal is re-radiated at all RAUs. Main Hub LEDs LED Color Indication HUB LEDS POWER Green On/Off Fault SYNC Green On/Off Fault SYNC Green Red Operational Fault LINK STATUS Green Red Operational Fault PORT LEDS 2-6 LGCell Equipment Main Hub Back Panel Back Panel Description • Three N-type, Female Connectors with dust caps • One Duplexed (labeled DUPLEX) • One Uplink (labeled REVERSE) • One Downlink (labeled FORWARD) • One D-Sub 9-pin Connector (labeled DIAGNOSTIC 1) • One D-sub 25-pin Connector (labeled DIAGNOSTIC 2) The Dual Band Main Hub Back Panel is shown below. The connectors are the same as shown for the single band LGCell Main Hub. N-Type Female Connectors The N-type, female connectors connect the coaxial cable from the roof-mounted antenna, repeater, or MBS to the Main Hub for RF connection. These cable connectors are operational in the cellular and PCS frequency bands. See Maximum Input RF Power per Carrier vs. Number of Carriers, on page 17 in this section for the maximum uplink and downlink power. 2-7 There are three N-type female connectors: Duplexed: Output and Input (bi-directional) Uplink: Simplex Output (unidirectional) Downlink: Simplex Input (unidirectional) • Duplexed (labeled DUPLEX) The DUPLEX connector is for a duplexed connection. This connector provides both downlink and uplink signals to and from the roof-mounted antenna, repeater, or MBS to the Main Hub. This duplex port provides a 30 or 40 dB gain on the duplex part. See “LGCell System Gain” on page 17. • Uplink (labeled REVERSE) and Downlink (labeled FORWARD) The uplink and downlink connectors are for a simplex connection. The FORWARD connector receives RF signals and the REVERSE connector transmits RF signals to and from the roofmounted antenna, repeater, or MBS. DO NOT exceed the maximum input power into the Main Hub. See Maximum Input RF Power per Carrier vs. Number of Carriers, on page 17 in this section. 2-8 LGCell Equipment D-Sub 9-Pin Connector The D-Sub 9-pin connector (labeled DIAGNOSTIC 1) provides contact closure for major and latch system alarm monitoring. The following table lists the function of each pin on the D-sub 9-pin connector. Pin Function +10 V (fused) Not connected Not connected Error Latch (positive connection) Error Latch (negative connection) DC Ground Major Error (positive connection) Error Reset Major Error (negative connection) Alarms LGCell provides full Operations Alarm Maintenance and Provisioning (OAM&P). The Main Hub senses then latches major alarms. An error latch provides historical information for troubleshooting. The major alarms and error latches are monitored with contact closures. Alarms can be sent to remote locations (see Section 5, Connectivity and Section 6, Troubleshooting). For details about alarm monitoring, see Appendix E – Alarm Report Monitor (ARM2000). The two error connections, Major Error and Error Latch, are relay connections. They are either open or short circuit (see the following table). Operation Major Error Error Latch Proper Operation Short Circuit Short Circuit Error Open Circuit Open Circuit Proper Operation but had error and system latched; alarm was not reset Short Circuit Open Circuit When you use these error pin connections, determine the error status by sending a current of no more than 40 mA through the positive connection and returning it through the negative connection. An error is indicated if current ceases to flow through the error connection. 2-9 Expansion Hub Antenna Ports Main Hub Port The Expansion Hub is LGCell’s intermediate distribution point. It transmits and receives low frequency signal (<200MHz) to and from the Main Hub, and to and from the RAUs. Utilizing LGC Wireless’ proprietary technology, both the MMF and the UTP/STP cables can transmit signals in the cellular or PCS frequency bands. The Dual Band 900/1800 Expansion Hub is shown below: 2-10 LGCell Equipment Expansion Hub Features • Mounts in a standard 19" equipment rack, with 17.25” (438 mm) • Height is 1.7" (44.5 mm). The Dual Band Expansion Hub is 3.5” (88.9 mm) high. • Operates with worldwide AC power, 100-240 VAC at 1.6 A and 50/60 Hz • Connects up to four RAUs. The Dual Band Expansion Hub connects up to four RAUs for the 900 system and up to four RAUs for the 1800 system. • Connects to the Main Hub with MMF transmit/receive cable (up to 1.5 dB optical loss, approximately 1 kilometer without jumpers) • Connects up to four RAUs via four RJ-45 connectors that feed RAUs directly through a UTP/STP cable • Provides DC power to RAUs through the UTP/STP cable • Has easily accessible connectors • Displays system operation via front panel LEDs • Communicates with Main Hub for system alarm status Expansion Hub Front Panel 97 (Labeled 1, 2, 3, and 4) 3 4 Expansion Hub Description AC power cord connector Power On/Off switch In Fiber Port (labeled MAIN HUB), one standard ST connector for MMF downlink (labeled DOWN) 4 In Fiber Port (labeled MAIN HUB), one standard ST connector for MMF uplink (labeled UP) 5 One LED for port sync status (labeled SYNC) 6 One LED for power (labeled POWER) 7 Four standard UTP/STP CAT 5 Cable RJ-45 female connectors (labeled ANTENNA PORTS 1, 2, 3, and 4) 2-11 8 One LED to monitor RF link status (labeled LINK STATUS) 9 One LED to monitor sync status (labeled SYNC) The Dual Band Expansion Hub Front Panel is shown below. The connectors are the same as those explained for the single band system. 900 MHz DUAL BAND 1800 MHz Standard MMF Uplink and Downlink Port The Expansion Hub transmits and receives cellular or PCS signals to and from the Main Hub using up to 1 kilometer of industrystandard 62.5µm/125 µm MMF cable found in most buildings. •Uplink/Output (labeled UP) The uplink is the combination of all uplink signals received by the RAUs. The signals are fed into the Expansion Hub via the UTP/STP cables. The Expansion Hub then transmits the combination of all signals to the Main Hub via the MMF cable. •Downlink/Input (labeled DOWN) The Expansion Hub receives downlink signals from the Main Hub via the other MMF port. The downlink signals are subsequently reradiated at all RAUs via the UTP/STP cable. 2-12 LGCell Equipment UTP/STP CAT 5 Cable Connectors Delivers electrical power to the RAUs. Also transmits downlink signals and receives uplink signals to and from the RAUs. Expansion Hub LEDs LED Color Indication HUB LEDS POWER Green On/Off Fault SYNC Green On/Off Fault SYNC Green Red Operational Fault LINK STATUS Green Red Operational Fault PORT LEDS Remote Antenna Unit (RAU) RAU Description • One female SMA connector • One Standard CAT 5 UTP/STP RJ-45 female receptacle • Two LEDs •One for antenna power •One for antenna sync indication 2-13 The Dual Band 900/1800 RAU is shown here. The Dual Band RAU has the same connectors as the single band RAU. It has one set of connectors for the 900 RAU and one set for the 1800 RAU. RAUs are active antennas that connect directly to an Expansion Hub over standard CAT 5 (or better) UTP/STP cable. The cable also delivers electrical power to the antenna. RAUs receive uplink cellular or PCS signals and re-transmits them to an Expansion Hub in a low frequency signal format (<200MHz). They also receive signals from the Expansion Hub, and re-convert the signals back to the cellular or PCS band for transmission on the downlink. RAU Features • Transmits to Expansion Hubs via an RJ-45 connector using UTP/STP cable • Uses an SMA connector for standard in-building antennas • Has easily accessible connectors • Displays system operation via LEDs • Dimensions: 5.7" x 5.5" x 1.2" (145 mm x 140 mm x 30 mm). The dimensions for the Dual Band RAU are 8” x 6.2” x 2.7” (1626 mm x 157 mm x 69 mm). • Connects to Expansion Hub via one RJ-45 connector that feeds RAUs directly through a UTP/STP cable (up to 60 meters) For system performance for cable lengths greater than 60 meters, see “LGCell System Gain vs. UTP/STP Cable Length (800 MHz, iDEN, 900 MHz)” on page 6 and “LGCell System Gain vs. UTP/STP Cable Length for 1800 MHz or 1900 MHz (Horizontal run, measured with 1 km of Multi-Mode Fiber)” on page 7 in Appendix A – Cables, Connectors, and Accessories. 2-14 LGCell Equipment RAU Connectors SMA Connector The SMA connector on the RAU is a duplexed RF input/output port that connects to standard in-building antennas. •Uplink (Input) The uplink cellular or PCS channels are received from the mobile phone by the in-building antenna. For the maximum downlink composite radiated power at the RAU, see the table on page 17 in this chapter. •Downlink (Output) The downlink channels are transmitted (radiated) by the standard in-building antenna. For the maximum downlink composite radiated power at the RAU, see the table on page 17 in this chapter. Standard CAT 5 UTP/STP RJ-45 Jack Delivers electrical power to the antenna. Also transmits and receives uplink and downlink signals to the Expansion Hub. RAU LEDs LED Color Indication POWER Green On SYNC Red Fault If the antenna SYNC LED lights red, RF power in the antenna is automatically shut down. The antenna RF power is reset when the SYNC LED goes off. 2-15 RAU Optional Antennas The following illustration shows optional antennas that can plug into the SMA connector. For recommended antennas, refer to the accessory section in the LGCell Price List or contact your account manager. LGCell System Specifications The following tables give system specifications for LGCell. 2-16 • System gain, maximum input/output RF Power • Maximum Input Power per Carrier vs. Number of Carriers LGCell Equipment LGCell System Gain This table is a summary of the system gain for different frequencies and formats. System Gain LGCell Frequency/Format Duplex Simplex 800 MHz AMPS, TDMA 30 800 MHz CDMA 30 800 MHz iDEN 900 MHz GSM 1800 MHz CDMA DCS 1800 GSM 1900 MHz TDMA 40 1900 MHz CDMA 40 1900 MHz GSM 40 Maximum Input RF Power per Carrier vs. Number of Carriers When you connect a Main Hub to an MBS that supports several RF carriers, the RF power per carrier must be cut back so as not to exceed the total composite radiated power into the Main Hub DUPLEX or FORWARD connector. The following table shows the maximum power per carrier and maximum composite power for different frequencies, formats, and numbers of carriers. 800 CDMA Number of Carriers 1800 Korean CDMA Maximum Maximum Power Composite per Power Carrier Number of Carriers Maximum Maximum Power Composite per Power Carrier 1900 TDMA Number of Carriers Maximum Maximum Power Composite per Power Carrier 10.0 10.0 9.0 9.0 10.0 10.0 7.0 10.0 6.0 9.0 7.0 10.0 5.2 10.0 4.2 9.0 5.2 10.0 3.0 9.0 2.0 8.0 3.0 9.0 2-17 800 AMPS Number of Carriers 800 TDMA Maximum Maximum Power Composite per Power Carrier Number of Carriers 800 GSM Maximum Maximum Power Composite per Power Carrier Number of Carriers Maximum Maximum Power Composite per Power Carrier 20.0 20.0 17.0 17.0 20.0 20.0 15.5 18.5 12.5 15.5 8.0 11.0 12.8 17.6 9.8 14.6 6.0 10.8 11.0 17.0 8.0 14.0 4.7 10.7 9.5 16.5 6.5 13.5 3.8 10.8 8.3 16.1 5.3 13.1 3.0 10.8 7.3 15.8 4.3 12.8 2.3 10.8 6.5 15.5 3.5 12.5 2.0 11.0 5.7 15.2 2.7 12.2 1.5 11.0 10 5.0 15.0 10 2.0 12.0 10 1.2 11.2 11 4.4 14.8 11 1.4 11.8 11 0.8 11.2 12 3.8 14.6 12 0.8 11.6 12 0.5 11.3 13 3.3 14.4 13 0.3 11.4 13 0.3 11.4 14 2.8 14.3 14 -0.2 11.3 14 0.0 11.5 15 2.4 14.1 15 -0.6 11.1 15 -0.1 11.7 16 1.9 14.0 16 -1.1 11.0 16 -0.3 11.7 2-18 LGCell Equipment 1800 DCS/GSM Number of Carriers 1900 AMPS Maximum Maximum Power Composite per Power Carrier Number of Carriers 1900 TDMA Maximum Maximum Power Composite per Power Carrier Number of Carriers Maximum Maximum Power Composite per Power Carrier 18.0 18.0 20.0 20.0 17.0 17.0 6.0 9.0 13.5 16.5 12.5 15.5 4.0 8.8 11.5 16.3 9.8 14.6 2.7 8.7 10.3 16.3 8.0 14.0 1.8 8.8 9.3 16.3 6.5 13.5 1.0 8.8 8.3 16.1 5.3 13.1 0.3 8.8 7.3 15.8 4.3 12.8 0.0 9.0 6.5 15.5 3.5 12.5 -0.4 9.1 5.7 15.2 2.7 12.2 10 -0.8 9.2 10 5.0 15.0 10 2.0 12.0 11 -1.1 9.3 11 4.4 14.8 11 1.4 11.8 12 -1.4 9.4 12 3.8 14.6 12 0.8 11.6 13 -1.7 9.4 13 3.3 14.4 13 0.3 11.4 14 -1.9 9.6 14 2.8 14.3 14 -0.2 11.3 15 -2.1 9.7 15 2.4 14.1 15 -0.6 11.1 16 -2.3 9.7 16 1.9 14.0 16 -1.1 11.0 2-19 1900 GSM Number of Carriers Maximum Power per Carrier Maximum Composite Power 20.0 20.0 8.0 11.0 6.0 10.8 4.7 10.7 3.8 10.8 3.0 10.8 2.3 10.8 2.0 11.0 1.5 11.0 10 1.2 11.2 11 0.8 11.2 12 0.5 11.3 13 0.3 11.4 14 0.0 11.5 15 -0.1 11.7 16 -0.3 11.7 Band Selective Option LGCell 800 MHz, 900 MHz, 1800 MHz, and 1900 MHz The LGCell 800/900 MHz system has fixed bands of operation. The LGCell 1800/ 1900 MHZ system has a fixed bandwidth filter in each system that is centered over the desired band of operation. The desired band of operation is an ordered item either by band (A, B, D, E, F) or by the center uplink and downlink frequency. 2-20 LGCell Equipment The following table shows the bandwidths for each type of system. System DAS 800 MHz - AMPS, Fixed Filter Bandwidth Uplink Center Frequency Downlink Center Frequency 25 MHz 836.5 MHz 881.5 MHz DAS 800 MHz - iDEN 18 MHz 815 MHz 860 MHz DAS 900 GSM 25 MHz 947.5 MHz 902.5 MHz DAS 1800 KOREAN CDMA 30 Mhz 1765 MHz 1855 MHz DAS 1800 DCS (GSM) 30 MHz 1725 MHz1 to 1770 MHz 1820 MHz1 to 1865 MHz DAS 1900 MHz - CDMA, 15 MHz 1857.5 MHz2 to 1892.5 MHz 1937.5 MHz2 to 1972.5 MHz TDMA, CDMA TDMA, GSM For example, the A band for 1900 MHz PCS has the fixed 15 MHz filter centered at 1937.5 MHz for the downlink and 1857.5 for the uplink. 30 MHz pass filter can be positioned along the 75 MHz DCS 1800 band. Order product with uplink and downlink frequency at 1.25 MHz spacing. For example an uplink center frequency of 1737.5 MHz will provide a 30 MHz band between 1722.5 MHz and 1752.5 MHz and a downlink center frequency of 1832.5 MHz will provide a 30 MHz band between 1817.5 MHz and 1847.5 MHz. Similar to above, the 1900 PCS 15 MHz filter can be positioned along the 60 MHz band. The LGCell covers a 30 MHz band in frequency range of 1710 MHz to 1785 MHz on the uplink and 1805 MHz to 1880 MHz on the downlink. The operator can choose where to place the 30 MHz band of operation by choosing the corresponding center frequencies as shown in the following table. 2-21 Band Center Frequency of the DCS 1800 MHz LGCell The filter band is 30 MHz wide (or 15 MHz on each side of the center). Uplink Freq Downlink Freq Uplink Freq Downlink Freq 1725.00 1820.00 1748.75 1843.75 1726.25 1821.25 1750.00 1845.00 1727.50 1822.50 1751.25 1846.25 1728.75 1823.75 1752.50 1847.50 1730.00 1825.00 1753.75 1848.75 1731.25 1826.25 1755.00 1850.00 1732.50 1827.50 1756.25 1851.25 1733.75 1828.75 1757.50 1852.50 1735.00 1830.00 1758.75 1853.75 1736.25 1831.25 1760.00 1855.00 1737.50 1832.50 1761.25 1856.25 1738.75 1833.75 1762.50 1857.50 1740.00 1835.00 1763.75 1858.75 1741.25 1836.25 1765.00 1860.00 1742.50 1837.50 1766.25 1861.25 1743.75 1838.75 1767.50 1862.50 1745.00 1840.00 1768.75 1863.75 1746.25 1841.25 1770.00 1865.00 1747.50 1842.50 The following table shows settings for the 1900 MHz system. Settings for Selecting Band Center Frequency of the 1900 MHz LGCell System 2-22 Band Uplink Frequency Downlink Frequency 1857.50 1937.50 MHz 1867.50 1947.50 MHz 1877.50 1957.50 MHz 1887.50 1967.50 MHz 1892.50 1972.50 MHz LGCell Equipment 3 LGCell Site Planning and Design This section provides information to assist in planning and designing an LGCell system and preparing a site for the LGCell installation. Proper project management is instrumental in providing a timely and accurate deployment. The first step in planning an LGCell system is to estimate the amount of radio frequency (RF) coverage you need for your building or coverage area. Initial estimates can be developed using floor plans and the models that follow. Eventually you need to go on-site to evaluate the facility’s readiness for installation and possibly perform RF measurements in order to guarantee performance. The LGC Wireless Site Survey Questionnaire is included for your reference. Contents LGCell Site Planning and Design Project Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RF Coverage Estimate for a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 RF Measurements and Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Site Survey Questionnaire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3-2 LGCell Site Planning and Design Project Management Installing the LGCell system is easy after all of the pre-installation requirements are met. It is beneficial to have one person manage and coordinate all aspects of the planning, design, and installation. Managing the process should avoid unnecessary surprises. The project manager is the person responsible for assigning tasks and ensuring scheduled work is performed on time. This includes collecting all information necessary for a complete site assessment, getting cost estimates and purchase order (PO) approval, scheduling any cabling work, scheduling the LGCell installation and commissioning, and providing final as-built documentation. The project manager also acts as the coordinator between the following people: Cellular or PCS carrier RF engineer Site acquisition person MBS vendor MBS installer Cabling contractor(s) End user If you do not have a designated project manager, please contact LGC Wireless. We can provide you with an estimate of what it would cost to have LGC Wireless manage your project. Please call us at 1-800-530-9960 (in the U.S.). International customers, please call us at +1-408-487-2400. 3-3 Project Management Estimated Timeline Description Details Time Interval Detailed site walkthrough/RF survey Prepare installation information, including RF plan, floor plan, equipment order form, and final design. 2 weeks Order LGCell equipment Get all standard parts and accessories required. 8 weeks Select cabling contractor Complete installation statement of work and provide floor plan with equipment locations, list of cabling runs, and other materials and connections. Get cabling quotation after walk-through. 2 weeks Order all other equipment Get equipment from all vendors, including cables, connectors, MBS, surge protectors, and so on. Monitor order progress and shipment. 4 weeks Install cable Monitor installation. 1-5 days Install LGCell Review installation checklist and prepare all materials. 1-3 days Test installation and RF coverage Be sure there are no blank areas. 1 hour per RAU Generate as-built document Prepare site plan diagram and coverage performance. 1-5 days RF Coverage Estimate for a Site To provide adequate RF coverage within a facility, you need a median signal level strong enough for good voice communications. As a guideline, you can refer to the following tables for general coverage areas, based on a design goal of 0 dBm output power per carrier, -85 dBm received signal strength (independent of communications protocol), 5 dB fade margin and 3 dBi antenna gain. 3-4 LGCell Site Planning and Design Antenna Coverage for 800/900 MHz Frequency Applications (0 dBm per carrier, 5 dB fade margin, -85 dBm design goal and 3 dBi antenna gain) Facility PLS Coverage per Antenna (Square Feet) Manufacturing 27.3 30,000 Hospital 28.8 15,000 Airport 27.3 30,000 Retail 27.7 25,000 Warehouse 27.3 30,000 Parking Garage 26.8 40,000 Antenna Coverage for 1800/1900 MHz Frequency Applications Facility PLS Coverage per Antenna (Square Feet) Manufacturing 24.9 25,000 Hospital 26.5 10,000 Airport 24.9 25,000 Retail 25.2 20,000 Warehouse 24.9 25,000 Parking Garage 24.3 35,000 Office Antenna Coverage for 800/900 MHz Frequency Applications Facility PLS Coverage per Antenna (Square Feet) Open - 80% cubicles/20% offices 27.7 25,000 80% - 50% cubicles/50% offices 28.2 20,000 10% - 20% cubicles/80% offices 28.8 15,000 3-5 Office Antenna Coverage for 1800/1900 MHz Frequency Applications Facility PLS Coverage per Antenna (Square Feet) Open - 80% cubicles/20% offices 25.2 20,000 80% - 50% cubicles/50% offices 25.7 15,000 10% - 20% cubicles/80% offices 26.5 10,000 The preceding tables show estimated clutter-defined path loss slope (PLS) for different frequencies at various kinds of sites. If you change the design goal or other parameters, these numbers will change based on the PLS. If the design parameters (output power per carrier, design goal, antenna gain, and fade margin) differ from those stated above, you can use the PLS value shown in the preceding tables in the following formula to estimate the area of coverage per antenna: Path Loss Formulas Path Loss (dB) = PLS * log 4πfD / c Note: Path Loss Slope = PLS dB/decade for free space loss D is the distance in meters f is the frequency in MHz c is the speed of light Path Loss=Power per Carrier + Antenna Gain - Fade Margin - Design Goal (dBm) D = [10(Path Loss / PLS)] x [c / (4πf)] To convert feet to meters: Area = (D x 3.281)2 x π The PLS is a general path loss number which takes into account free space loss and normal barriers to the RF signal. Severe obstructions such as metal, cement walls, or elevator shafts are best accounted for by a physical site survey. 3-6 LGCell Site Planning and Design As a reference the following table gives estimates of the signal loss for some RF barriers. Average Signal Loss of Common Building Materials Partition Type Loss @ 815 MHz Metal wall 26 dB Aluminum siding 20 dB Concrete block wall 13 dB Foil insulation 4 dB Concrete floor 15 dB Sheetrock 1.4 dB RF Measurements and Site Survey Before designing an LGCell system, one should go to the site and measure the loss characteristics of the building. To determine the amount of coverage per antenna, the best method is a test of RF propagation, which you can do on-site with a test transmitter and field strength meter. While at the site, one can use the following Site Survey Questionnaire to document site specifics. Site Survey Questionnaire You can use the LGC Wireless Site Survey Questionnaire to help design your LGCell system. A sample questionnaire follows. The following information is needed when you walk a site: 3-7 Site Survey Questionaire 585 EAST BROKAW ROAD | SAN JOSE, CA 95112 | TEL 408.487.2400 | FAX 408.487.2410 Company Name: Project Name: Purchaser: Address: Contact: Phone: E-Mail: End-User: End-User Contact: Address: Phone: E-Mail: Coverage (BDA) Type of System Enhancement: Capacity (BTS) # of Carriers: If BTS, what Manufacturer & Model #: BHCR: If BTS, what is the # of Subscribers: -75 What is the desired downlink power at mobile (dBm): Wireless Office Erlangs/Sub: -80 -85 Frequency(ies): 800 900 1800 1900 Protocol(s): AMPS iDEN GSM TDMA CDMA DCS Are Floor Plans Available (Including Map Scale): YES NO Is Coverage Required Out Doors: YES NO If Floor Plans are not available, how many Buildings are to be Covered: How Many Floors per Building: (Use the Add'l comments if needed) 10 Total Square Footage to Cover per Building: 1 = 2 = 3 = 4 = 5 = (Use the Add'l comments if needed) 6 = 7 = 8 = 9 = 10 = Yes No Don't Know Are Exposed Antennas Tolerated Inside: Are Exposed Antennas Tolerated Outside: Locations for Main & Expansion Hubs Available (closets): Are 19" Equipment Racks Available: Is AC Power available at the Main and Expansion Hubs: Are Multimode Fiber Optic Cables Already Available: Are CAT 5 UTP/STP Runs Already Available: Are LGC Wireless Services Required: If so, which Services: - Project Management: - Site Survey: - LGCell Equipment Install & Commissioning: - CAT5, MMF, Coax & Antenna Installation: Estimated Installation Start Date (Must Provide If Services are Needed): Add'l Comments: (Special install requirements, covered areas, contacts, et CONFIDENTIAL AND PROPRIETARY Not to be distributed without prior written consent of LGC Wireless Ver. 2.0 3-8 LGCell Site Planning and Design
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