Nortel Networks 411-2021-111 manual Stsr

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xviList of terms

ST

Signaling Tone. In AMPS cellular, a 10 kHz tone transmitted on the Reverse Voice Channel (RVC) as a precursor to messaging activity, and for certain call- processing functions (acknowledgments, call termination). Presence of the tone mutes normal conversational audio.

STSR

Sectored-Transmit/Sectored-Receive. A cell configuration in which a different control and voice frequency assignment is designated for each sector. A directional antenna system is required for each sector.

TDMA

Time Division Multiple Access. A modulation and transmission format that allows a number of digital conversations (three in TDMA-3) to occur within the same Radio Frequency (RF) channel. Mobile units take turns transmitting/ receiving data on specific time slots of a TDMA frame.

TRU

Transmit Receive Unit. The TRU is a Digital Signal Processing (DSP) based transceiver capable of two modes of operation, analog (AMPS) and digital (TDMA).

VCH

Voice Channel. A Radio Frequency (RF) channel used to transmit cellular voice conversations. The VCH is also an integral part of call setup, handoff, and disconnect.

VSWR

Voltage Standing Wave Ratio. A measure of the mismatch between the transmitter source impedance and the load impedance to which it is connected. It is defined by the following relationship:

1		+		Reflected Power
1		+		Forward Power
VSWR =				Forward Power
VSWR =
1		-		Reflected Power
1		-

Forward Power

411-2021-111 Standard 01.01 June 1996

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Contents

DualMode Metrocell Page Page Publication history JuneContents Power and Grounding Requirements Cell Site ComponentsDatafilling a Metro Cell Site AppendicesBlock diagram of a 120 Stsr Metrocell using one RF Frame List of tablesPage About this document Intended audience for this publicationHow this publication is organized Applicability of this publicationBand List of termsCarrier RF Cell DBm DBW DuplexerFilter Forward pathIsolation LossModulation OmniDqpsk Return lossSector Signal RFSectorization Stsr Introduction Northern Telecoms DualMode MetrocellSystem architecture of a DualMode Metrocell Digital ready cellular productBasic components of a DualMode Metrocell Universal CE Frame Metro RF FrameChannel assignment for 800 MHz cellular systems 800 MHz cellular bandChannel assignment Band a 416 channels Band B 416 channels Introduction 6Introduction Standard 01.01 June Omni configuration Cell Site ConfigurationsOverview Sectorized configuration Omni N=7 frequency reuse plan120 N=7 sectorized frequency reuse plan 60 N=4 sectorized frequency reuse plan Omni cell site configuration Cell Site LayoutsControl Channel redundancy RF FrameCell Site Layouts 4Cell Site Layouts Transmit cabling TRU/DPA6Cell Site Layouts Receive cabling Component requirementNo. Frames TRUs ATCsStsr cell site configuration CE Frame Block diagram of a 120 Stsr Metrocell using one RF Frame RF FrameBlock diagram of a 120 Stsr Metrocell using three RF Frames 12Cell Site Layouts DPA 9 Port1 CCH ATC3 Port DPA 10 Port1 14Cell Site Layouts TRU/DPA ATC 16Cell Site Layouts Sector Sector Y Sector ZSector Y TX/RX, 3 RX Stsr cell site connection Control Channel Locate Channel Receiver SectorSector U Sector W22Cell Site Layouts Block diagram of a 60 Stsr Metrocell with two RF Frames 24Cell Site Layouts Block diagram of a 60 Stsr Metrocell with four RF Frames 26Cell Site Layouts Transmit cabling 28Cell Site Layouts TRU/DPA 30Cell Site Layouts Port2 ATC3 Port DPA Port1 RF Frame 32Cell Site Layouts Receive cabling 34Cell Site Layouts Sector Y 36Cell Site Layouts Component requirement 38Cell Site Layouts Standard 01.01 June Cell Site Components Major components of a DualMode Metrocell DescriptionNTAX98AA FRU Customer Service Operations 4Cell Site Components Standard 01.01 June Power and Grounding Requirements Safety requirementsPower and grounding requirements Power and Grounding Requirements 4Power and Grounding Requirements Frame power distribution Power distribution for the CE and RF Frames in a MetrocellSystem power protection Grounding UL/CSA approvalCEC par DC coupled signals Cable Identification 10Power and Grounding Requirements Standard 01.01 June Datafilling a Metro Cell Site Datafill OverviewTable Clli Table AcualmMetro RF Frame ATC Alarm PointsCavities Fan Pwr Hsmo +27V a Table VCHINV, CCHINV, Lcrinv Rip Connector J206Port # Frequency Assignment Example Example of Metro TRU datafillExample of Metro ICRM/TRU hardwire configuration Icrm8Datafilling a Metro Cell Site Standard 01.01 June System Configuration Appendix a DualMode Metrocell Cell Site SpecificationsRadio Frequency Alarms Audio InterfacePower Distribution Requirements DC Power RequirementsMechanical Packaging EnvironmentalRadiated Emissions Regulatory Electromagnetic EmissionsTelecom Compliance Product Safety Appendix B Frequency Plans =7 Frequency plan Band a=7 Frequency plan Band B =4 Frequency plan Band a =4 Frequency plan Band B10Frequency Plans Standard 01.01 June Page Cell Site Description