Air Interface

download Air Interface

of 55

  • date post

    10-Oct-2014
  • Category

    Documents

  • view

    72
  • download

    5

Embed Size (px)

Transcript of Air Interface

Planning Guideline: Air Interface Dimensioning

Issued by Communication Mobile NetworksCom MN PG NT NE 1 Munich

SIEMENS AG 2006The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utility model or design, are reserved. Technical modifications are possible. Technical specifications and features are binding only in so far as they are specifically and expressly agreed upon in a written contract.

1Planning Guideline: Air Interface dimensioning

s

Contents0 GENERAL INFORMATION..................................................................................................................... 3 0.1 0.2 1 2 HISTORY ............................................................................................................................................... 3 ABBREVIATIONS, DEFINITIONS AND EXPLANATIONS ............................................................................ 3

INTRODUCTION ....................................................................................................................................... 7 RADIO PROPAGATION ENVIRONMENT ........................................................................................... 8 2.1 2.2 2.3 CLUTTER TYPES .................................................................................................................................... 8 CELL TYPES .......................................................................................................................................... 9 CHANNEL MODEL .................................................................................................................................. 9

3

POWER BUDGET PARAMETERS ....................................................................................................... 10 3.1 3.2 3.3 3.3.1 3.3.2 3.4 3.5 3.5.1 3.5.2 3.5.3 3.5.4 3.6 3.7 BTS TRANSMISSION POWER ................................................................................................................ 11 MS TRANSMISSION POWER.................................................................................................................. 12 BTS SENSITIVITY ................................................................................................................................ 12 Sensitivity reference ports ............................................................................................................. 14 TMA and noise figure of the system .............................................................................................. 15 MS SENSITIVITY ................................................................................................................................. 17 DIVERSITY TECHNIQUES ..................................................................................................................... 18 2 branch RX diversity.................................................................................................................... 19 4 branch RX diversity.................................................................................................................... 20 TX diversity Antenna Hopping ...................................................................................................... 21 TX diversity Time Delay................................................................................................................ 22 RX/TX ANTENNA GAIN....................................................................................................................... 24 COMBINER INSERTION LOSSES ............................................................................................................ 24

4

PROPAGATION RELATED PARAMETERS...................................................................................... 26 4.1 4.2 4.3 4.4 LOG-NORMAL FADING AND STANDARD DEVIATION ............................................................................. 26 INDOOR CASE ...................................................................................................................................... 28 INTERFERENCE DEGRADATION MARGIN .............................................................................................. 28 BODY LOSS ......................................................................................................................................... 29 EQUIVALENT ISOTROPIC RADIATED POWER EIRP ........................................................................... 30 POWER BUDGET CALCULATIONS ......................................................................................................... 30 (E)GPRS LINK BUDGET ...................................................................................................................... 34 POWER BUDGET BALANCE .................................................................................................................. 37

5

MAXIMUM ALLOWABLE PATHLOSS CALCULATION ............................................................... 30 5.1 5.2 5.3 5.4

6

RADIO PROPAGATION PREDICTION .............................................................................................. 38 6.1 6.2 6.3 6.4 PROPAGATION SLOPE .......................................................................................................................... 38 ONE SLOPE MODEL .............................................................................................................................. 39 TWO SLOPE MODEL ............................................................................................................................. 41 CELL SIZE EVALUATION ...................................................................................................................... 42

7

GRID PLANNING .................................................................................................................................... 45 7.1 7.2 7.3 7.4 OMNI CELL.......................................................................................................................................... 45 3-SECTORS SITE................................................................................................................................... 46 6- SECTOR SITES .................................................................................................................................. 47 2- OR 1-SECTOR SITES (ROAD SITE) ..................................................................................................... 49

8

LINK BUDGET APPLICATION CASES .............................................................................................. 51

2Planning Guideline: Air Interface dimensioning

s

0 General Information0.1 History Version 1.0 Date Reason for Changes 26.06.2006 1st version of document

0.2

Abbreviations, Definitions and Explanations Definition, explanation 8 Phase Shift Keying Receiver diversity: 2 RX paths Receiver diversity: 4 RX paths Frequency dependent part Cell coverage Antenna Combiner Antenna Hopping Amplifier Coupler Area covered by one site Receiver bandwidth Broadcast Control Channel Bit Error Rate Block Error Rate BTS CU sensitivity BTS CU output power Peak RF power at CU Base Transceiver Station Classic BTS (e.g. BS20, BS60) Base Transceiver Station Second Generation (e.g. BS240) Clutter correction factor Carrier to noise and interference ratio Carrier to noise ratio Cumulative Distribution Function Circuit Switched Carrier Unit Site-to-site distance MS antenna height correction Digital Communication System Di - Amplifier Multi Coupler Downlink Dense urban3

Abbreviation 8PSK 2RX 4RX A1/2 Acell ACOM AH AMCO Asite B BCCH BER BLER BSRX sensitivity BSTX pwr BSTX pwr_max BTS BTSone BTSplus c C/(N+I) C/N CDF CS CU D d(hMS) DCS DIAMCO DL du

Planning Guideline: Air Interface dimensioning

s

Abbreviation Eb Eb/No ECU ECU V3 EDGE EGPRS EIRP erf ERP ETSI f F BTS FDUAMCO FER FH FICOM FlexCU Fx GDL Antenna GDL TX div GMS antenna GMS antenna GMSK GPRS Gr GSM Gt GUL antenna GUL diversity Gx hb hBS hMS HPDU HT HT 100 HW IR IURS

Definition, explanation Energy of a single data bit Signal to noise ratio per bit EDGE Carrier Unit ECU version 3.0 Enhanced Data rates for GSM Evolution Enhanced General Packet Radio Service Equivalent Isotropic Radiated Power Error function Equivalent Radiated Power European Telecommunications Standards Institute Frequency Noise figure of BTS at antenna port Flexible Duplexer Amplifier Multi Coupler Frame Erasure Rate Frequency Hopping Filter Combiner Flexible Carrier Unit Noise factor Propagation slope BTS TX antenna gain Downlink diversity gain MS antenna gain MS antenna gain Gaussian Minimum Shift Keying General Packet Radio Service Antenna gain Global System for Mobile Communications Transmitter antenna gain UL antenna (RX antenna) gain of the BTS UL diversity gain Power amplification factor Antenna height Height of base station Height of MS High Power Duplexer Unit Hilly Terrain Hilly Terrain at 100 km/h Hardware Incremental Redundancy Improved Uplink Receiver Sensitivity4

Planning Guideline: Air Interface dimensioning

s

Abbreviation k L LA Lbackoff Lbody loss Lcombiner loss LDL cable_loss LHPDU Lincar Linterference deg Llog-normal margin LMS cable loss LNF LNF margin LOS Lpenetration LUL cable loss MAPL MCS MS MSRX sensitivity MSTX pwr max MUCO N n NF No P P Noise PCS PDCH Pr PRACH PS PSK Pt R r RA250

Definition, explanation Boltzmann constant System loss factor (e.g. cable and combiner loss) Link Adaptation Static power reduction Body loss Antenna combiners insertion loss DL cable loss HPDU loss Incar loss