Nortel 411-2021-111 - Manuals

Contents vii DMS-MTX DualMode Metrocell Cell Site Description Figure 3-4 Frame layout of a 120 ° STSR Metrocell site with one RF frame (front view) 3-9 Figure 3-5 Frame layout of a 120 ° STSR Metrocell site with three RF frames (front view) 3-9 Figure 3-6 Block diagram of a 120 ° STSR Metrocell usin...

ix DMS-MTX DualMode Metrocell Cell Site Description About this document This publication is one of a set of documents that provide Northern Telecom (Nortel) customers with information and suggestions on the planning and maintenance of their DualMode Metrocell system. This set of documents includes t...

x About this document 411-2021-111 Standard 01.01 June 1996 The document suite assumes that the reader possesses a basic knowledge of the cellular system and radio propagation and is familiar with measurement units incorporated in the system. Therefore, this document will not provide detailed inform...

xi DMS-MTX DualMode Metrocell Cell Site Description List of terms A-Band The lower 333 channels (Channel 1 - 333) of the cellular band, normally assigned to a non-wireline operator in the US and Canada.The Expanded Spectrum provides 83 more channels, 50 (Channel 667 - 716) in the A’-Band and 33 (cha...

xii List of terms 411-2021-111 Standard 01.01 June 1996 Cell By theoretical design, it is the geographical representation of the cellular coverage area or service area defining both the associated size and shape. CSM2 Cell Site Monitor 2. A unit that provides analog testing and monitoring capabiliti...

List of terms xiii DMS-MTX DualMode Metrocell Cell Site Description FDMA Frequency Division Multiple Access. A frequency assignment arrangement whereby all users share the total frequency allotment and each frequency is assigned to a given user at access on a multiple user access basis. Filter A fre...

xiv List of terms 411-2021-111 Standard 01.01 June 1996 Modulation The process of placing information on an RF carrier. The modulation technique may involve changing the amplitude, frequency, or phase of the carrier determined by the modulation index. NES Non-expanded Spectrum. The frequency spectru...

1-1 DMS-MTX DualMode Metrocell Cell Site Description 1 Introduction Northern Telecom's DualMode Metrocell As cellular systems evolve to the digital format, service providers and mobile subscribers are confronted by a mixture of analog and digital technologies. Northern Telecom (Nortel)’s dual mode c...

1-4 Introduction 411-2021-111 Standard 01.01 June 1996 The 800 MHz cellular band In an 800 MHz North American cellular system, a frequency spectrum of 50 MHz is available for service. Operating from 824 to 894 MHz, including the expanded spectrum, the system conforms to the AMPS IS-54 protocol. Typi...

Introduction 1-5 DMS-MTX DualMode Metrocell Cell Site Description The relationship between the channel number (N) and the frequency is: Channel number: 1 ≤ N ≤ 799 Receiver frequency (in MHz) = 0.03N + 825.000 Transmit frequency (in MHz) = 0.03N +870.000 Channel number: 990 ≤ N ≤ 1023 Receiver frequ...

2-1 DMS-MTX DualMode Metrocell Cell Site Description 2 Cell Site Configurations Overview The DualMode Metrocell can be configured in the following ways: • Omni-directional transmit/receive • 120 ° Sectored Transmit Sectored Receive (STSR) • 60 ° Sectored Transmit Sectored Receive (STSR) The majority...

2-2 Cell Site Configurations 411-2021-111 Standard 01.01 June 1996 Figure 2-1 shows the layout of an Omni (N=7) frequency reuse plan;. The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters, channels in Cell 2 are reused in Cell 2 of other clusters and so on. Figure 2-1Om...

Cell Site Configurations 2-3 DMS-MTX DualMode Metrocell Cell Site Description Figure 2-2 shows the layout of a 120 ° (N=7) sectorized frequency reuse plan. The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters, channels in Cell 2 are reused in Cell 2 of other clusters an...

2-4 Cell Site Configurations 411-2021-111 Standard 01.01 June 1996 60 ° sectorized configuration In a 60 ° (N=4) sectorized configuration, the 416 RF channels are divided among a group of four cells. Each cell contains a maximum of 104 RF channels, with six Control channels for each cell. Since each...

3-1 DMS-MTX DualMode Metrocell Cell Site Description 3 Cell Site Layouts This chapter provides information on the layout and cabling of the different DualMode Metrocell configurations. Note: The DualMode Metrocell supports only Transmit Receive Units (TRU) with Product Engineering Code (PEC) NTAX98A...

3-2 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 (ATC 1 and ATC 2) are combined through one phasing transformer (located at ATC 2) and then connected to Duplexer position 2 and the main TX/RX Antenna. The output of the upper ATC (ATC 3) is connected to Duplexer position 3 and the diversit...

Cell Site Layouts 3-5 DMS-MTX DualMode Metrocell Cell Site Description Transmit cabling In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module. The output of each power amplifi...

3-6 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Note: Additional RF Frames with 21 channels or more are connected to their respective TX/RX antennas in the same way as RF Frame 1. Table 3-2RF Frame 1 PA to ATC connection for an omni Metrocell with 21 channels or more From Through To DPA ...

Cell Site Layouts 3-7 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer. The diversity antenna connects directly to the ...

3-8 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 120 ° STSR cell site configuration The Metrocell in a 120 ° STSR configuration uses at least two equipment frames, one CE Frame and one RF frame (see Figure 3-4). Each TRU/DPA Shelf and its associated ATC on the RF frame support one of the ...

3-12 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Transmit cabling In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module. For a 120 ° STSR cell site with one RF Fra...

Cell Site Layouts 3-17 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna of each sector is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer of that sector. The diversity an...

Cell Site Layouts 3-21 DMS-MTX DualMode Metrocell Cell Site Description 60 ° STSR cell site connection The Metrocell in a 60 ° STSR configuration uses at least three equipment frames, one CE Frame and two RF frames (see Figure 3-8). Each TRU/DPA Shelf and its associated ATC on one of the two RF fram...

3-22 Cell Site Layouts 411-2021-111 Standard 01.01 June 1996 Figure 3-8Frame layout of a 60 ° STSR Metrocell with two RF frames (front view) Figure 3-9Typical frame layout of a 60 ° STSR Metrocell with four RF frames (front view) Note: A fifth RF Frame can be added for expanding three of the sectors...

Cell Site Layouts 3-33 DMS-MTX DualMode Metrocell Cell Site Description Receive cabling In the reverse path, the receive signal from the main antenna of each sector is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer of that sector. The diversity an...

Cell Site Layouts 3-37 DMS-MTX DualMode Metrocell Cell Site Description Component requirement Table 3-16 lists the components required for a 60 ° STSR Metrocell with two RF Frame and Table 3-17 lists the components required for a 60 ° STSR Metrocell with four RF Frames. Both configurations require s...

4-1 DMS-MTX DualMode Metrocell Cell Site Description 4 Cell Site Components This chapter provides information on the description and Product Engineering Codes (PEC) of the major components used in a DualMode Metrocell. Table 4-1Major components of a DualMode Metrocell Note: FRU = Field Replaceable U...

Cell Site Components 4-3 DMS-MTX DualMode Metrocell Cell Site Description Customer Service Operations Most of these components can be ordered from Nortel. Contact the following Nortel Customer Service Operations (CSO) when replacement is required: For United States customers: Northern Telecom Inc.At...

5-1 DMS-MTX DualMode Metrocell Cell Site Description 5 Power and Grounding Requirements Cell sites are built to house communication equipment of the cellular telephone network. Cellular equipment can be located in stand-alone sites or in larger buildings in urban areas. Cellular equipment is traditi...

5-2 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 Power and grounding requirements Typical cell site radio equipment is powered by a +24 Vdc power system. However, the primary power for a DualMode Metrocell is +27 Vdc nominal. The reason that +27 Volts is specified as the no...

Power and Grounding Requirements 5-5 DMS-MTX DualMode Metrocell Cell Site Description Frame power distribution Figure 5-1 shows the distribution network for supplying power to the cell site components in the CE and RF Frames. Figure 5-1Power distribution for the CE and RF Frames in a Metrocell TRU/P...

5-6 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 System power protection There are three levels of protection at a Metrocell cell site. The first level is at the power plant which may consist of a hydraulic-magnetic breaker or slow-blow fuse. This stage is not provided by N...

Power and Grounding Requirements 5-7 DMS-MTX DualMode Metrocell Cell Site Description scheme if the system input power is less than 50V thus not requiring any ground (see CEC par 10-102). CEC par 10-102 Two wire direct-current systems supplying interior wiring and operating at not more than 300 V or...

5-8 Power and Grounding Requirements 411-2021-111 Standard 01.01 June 1996 DC coupled signals DC coupled signals are considered undesirable from a grounding point of view for the following reasons: • If a signal is routed to another system on a separate ground, then isolation is lost due to a connec...

Power and Grounding Requirements 5-9 DMS-MTX DualMode Metrocell Cell Site Description Cable Identification It is a current practice to label or color-code insulated conductors. The following table shows the labeling and colors of insulated wires used in North America. Framework Ground or Framework B...

6-1 DMS-MTX DualMode Metrocell Cell Site Description 6 Datafilling a Metro Cell Site Datafill Overview This section outlines the differences which you should consider when datafilling a Metro site. It makes no attempt at dealing with the entire datafill procedure and assumes that you are familiar wi...

6-2 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 Table CLLI Table CLLI defines both a name and a quantity to a certain MTX trunk assignment. For the Metro application the number of trunks assigned in TRKGRSIZ should be capable of supporting the additional VCHs supported. The m...

6-4 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 The MTX Datafill alarm points for the CE frame are shown in Table 6-5. Table 6-4MTX Alarm Points Datafill Numbers for Metro RF Frame Metro RF Frame Power Filter Alarm Points Metro RF Frame # Power Filter A-Side Power Filter B-Si...

Datafilling a Metro Cell Site 6-5 DMS-MTX DualMode Metrocell Cell Site Description Table VCHINV, CCHINV, LCRINV The frequency assignment tables should be datafilled so that the TRU location in the Metro RF Frame with respect to the port card of the ICRM are correctly identified in the datafill tuple...

6-6 Datafilling a Metro Cell Site 411-2021-111 Standard 01.01 June 1996 Frequency Assignment Example An example configuration is shown in Figure 6-1. In this example The ICRM virtual port card 0 is hardwired to the RIP Connector J205 and virtual port card 1 is hardwired to RIP Connector J206 (see Fi...

Datafilling a Metro Cell Site 6-7 DMS-MTX DualMode Metrocell Cell Site Description Figure 6-2Example of Metro ICRM/TRU hardwire configuration J201 J209 J205 J202 J203 J204 J206 J207 J208 Connector Assignments Physical Port Card Slot Location ICRM 4 5 6 7 8 17 18 19 20 21 NT8X47BA Port Card NT8X47BA ...

7-1 DMS-MTX DualMode Metrocell Cell Site Description Appendix A: DualMode Metrocell Cell Site Specifications System Configuration Channel capacity Up to 120 RF Channels for Omni cell sites Up to 8, 16 or 24 RF Channels per sector for 120 ° STSR cell sites Up to 8 or 16 RF Channels per sector for 60 ...

7-2 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Transmit path insertion loss (including ATC, duplexer and cable losses): 8 channels -4.4 dB maximum 16 channels -4.7 dB maximum 24 channels -5.0 dB maximum Minimum antenna input RF power (at the ANT port of the dup...

DualMode Metrocell Cell Site Specifications 7-3 DMS-MTX DualMode Metrocell Cell Site Description DC Power Requirements Grounding As specified in Northern Telecom’sNTP-297-1001-156 Voltage Nominal +27.0 Vdc ± 0.5 Vdc Range +21.0 Vdc to 29.0 Vdc Ripple 400 millivolts Spurious 0.005 - 10 MHz < -55 d...

7-4 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Paint Maple Brown # SCP-717-R1 Marking Nortel Logo Packaging Frames ShockAir bubble sheet and Styrofoampackaging material Vibration Styrofoam sandwich pallet Bracing and support Wood, 2 x 4 braces Moisture 5 mil po...

DualMode Metrocell Cell Site Specifications 7-5 DMS-MTX DualMode Metrocell Cell Site Description Earthquake Meet earthquake requirements of Zone 1 and Zone 2 as defined by Bellcore TR-NWT-000063 Fixed equipment anchorage. Thermal dissipation for Metrocell RF Frame: Regulatory Electromagnetic Emissio...

7-6 DualMode Metrocell Cell Site Specifications 411-2021-111 Standard 01.01 June 1996 Product Safety Cell site equipment complies with the following Safety Specification: • CSA C22.2 No. 225-M90, Telecommunication Equipment • CSA C22.2 No. 1, Radio, Television and Electronic Apparatus • UL-1459, Iss...

Frequency Plans 7-7 DMS-MTX DualMode Metrocell Cell Site Description Appendix B: Frequency Plans N=7 Frequency plan (Band A) Note: The control channels are indicated in bold in these frequency plans (they may be re-assigned as required). Group A1 B1 C1 D1 E1 F1 G1 A2 B2 C2 D2 E2 F2 G2 A3 B3 C3 D3 E3...

DualMode Metrocell Cell Site Description Manual Wireless Customer Documentation, ManagerNortelP.O. Box 833858Richardson, Texas 75083-3858Phone: (214) 684-1770 / Fax: (214) 684-3977 Copyright  1996 Northern Telecom NORTHERN TELECOM CONFIDENTIAL: The information contained in this document is the prop...