Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 7: Example of link budgets and coverage.

Slides:



Advertisements
Similar presentations
ECE 5221 Personal Communication Systems
Advertisements

Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 15: Capacity of CDMA systems Spring 2011.
Altai Super WiFi Training WiFi Network Planning
October, RF Engineering 102 v1.0 (c) 1997 Scott Baxter Working in Decibels Chapter 9 Section A.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 19: Traffic planning (3) Spring 2011.
ECE 5233 Satellite Communications Prepared by: Dr. Ivica Kostanic Lecture 19: Multiple Access Schemes (3) (Section 6.3 and 6.4 ) Spring 2011.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 1: Introduction (Chapter 1) Spring 2011.
ECE 5233 Satellite Communications
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 23 – Basics of 3G - UMTS Spring 2011.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 4: Estimation of coverage reliability.
ECE 5233 Satellite Communications
Lecture 3: Propagation Modelling Anders Västberg
EELE 5490, Fall, 2009 Wireless Communications Ali S. Afana Department of Electrical Engineering Class 6 Dec. 4 th, 2009.
Propagation loss models Lab 4 Engr. Mehran Mamonai.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 5: Example of a macroscopic propagation.
ECE 5233 Satellite Communications
08/16/01. Link Budgets for Cellular Networks Presented by Eric Johnson.
EEE440 Modern Communication Systems Cellular Systems.
Summary of Path Loss in Propagation
08/16/01.
ECE 4730: Lecture #5 1 Cellular Interference  Two major types of system-generated interference : 1) Co-Channel Interference (CCI) 2) Adjacent Channel.
Propagation characteristics of wireless channels
ECE 5233 Satellite Communications
ECE 5221 Personal Communication Systems
 Defining the RF jamming system and showing the importance and need of using it in many places.  Giving a complete RF jamming system design based on.
ECE 5233 Satellite Communications
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 12: Frequency allocation and channelization.
CELLULAR COMMUNICATIONS Cellular Basics. Spectrum Reuse  Earlier systems: single central transmitter  Cover wide area  Single channel per user  25kHz.
Ron Milione Ph.D. W2TAP W2TAP InformationModulatorAmplifier Ant Feedline Transmitter InformationDemodulatorPre-Amplifier Ant Feedline Receiver Filter.
Submission doc.: IEEE 11-11/1455r0 Nov 2011 Fei Tong,Les Smith, CSRSlide ah network outdoor deployment issues Date: 2011-Nov-03 Authors:
Radio Networks Design & Frequency Planning Software Application area: 1. Radio network frequency planning and system design, system EMC simulation/modeling.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 13: Frequency allocation and channelization.
Multiple Criteria Optimisation for Base Station Antenna Arrays in Mobile Communication Systems By Ioannis Chasiotis PhD Student Institute for Communications.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 21: Congestion control Spring 2011.
ECE 5233 Satellite Communications Prepared by: Dr. Ivica Kostanic Lecture 16: Multiple Access Schemes (Section 6.1 and 6.2 ) Spring 2014.
Wireless: Facts and Fiction Benjamin Friedlander Department of Electrical Engineering University of California at Santa Cruz Wireless Communications and.
Sensitivity System sensitivity is defined as the available input signal level Si for a given (SNR)O Si is called the minimum detectable signal An expression.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 2: Basics of cellular system architecture.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 16: Number of resource calculation in.
ECE 5233 Satellite Communications Prepared by: Dr. Ivica Kostanic Lecture 9: Satellite link design (Section 4.3) Spring 2014.
Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 20: Traffic planning (4) Spring 2011.
Cellular Networks No. 1  Seattle Pacific University Cellular Wireless Networks Common issues for wireless solutions Kevin Bolding Electrical Engineering.
ECE 5233 Satellite Communications Prepared by: Dr. Ivica Kostanic Lecture 15: Secondary atmospheric losses effects (Section ) Spring 2011.
ECE 4710: Lecture #36 1 Chapter 8  Chapter 8 : Wired and Wireless Communication Systems  Telephone  Fiber Optic  DSL  Satellite  Digital & Analog.
ECE 5233 Satellite Communications
ECE 5221 Personal Communication Systems
Submission doc.: /1320r00 Bo, Sun (ZTE Corp), et al Slide 1 11aj 45GHz Link Budget for use cases discussion Date: Authors: Nov 2012.
ECE 5233 Satellite Communications
Propagation Models Large scale models predict behavior averaged over distances >>  Function of distance & significant environmental features, roughly.
MOBILE NETWORK PLANNING Propagation loss models Lab 2.
RF Propagation No. 1  Seattle Pacific University Basic RF Transmission Concepts.
[Qualcomm, Ericsson, Nokia Networks, Huawei,…]
Section 6 Wideband CDMA Radio Network Planning. Radio Network Planning A radio network planning consists of three phases: 1.Network Dimensioning (using.
ECE 5233 Satellite Communications Prepared by: Dr. Ivica Kostanic Lecture 19: Multiple Access Schemes (4) (Section 6.8) Spring 2011.
From you host … Dr. H. Introduction Communications design requires us to think about the following issues: Communications design requires us to think.
Design WLAN Politeknik Telkom Design WLAN Step to design WLAN : 1. Location Survey 2. Topology 3. Distance calculating 4. Antenna design 5. Towering.
COMP1706: MOBILE AND NETWORK TECHNOLOGIES Cellular technologies Dr. George Loukas University of Greenwich.
Numericals.
Fundamentals of Cellular Networks (Part III)
ECE 5233 Satellite Communications
Shadowing.
Cellular and Wireless Networks System Design Fundamentals
and Specific Propagation Model Selection Supervisor: Dr.Yousef Dama
6-10GHz Rate-Range and Link Budget
Tri-Band RF Jamming System
ECE 5233 Satellite Communications
ECE 5233 Satellite Communications
ECE 5233 Satellite Communications
ECE 5233 Satellite Communications
Cellular Systems.
Presentation transcript:

Florida Institute of technologies ECE 5221 Personal Communication Systems Prepared by: Dr. Ivica Kostanic Lecture 7: Example of link budgets and coverage planning Spring 2011

Florida Institute of technologies Page 2  Balanced path  Nominal cell radius calculation  Typical link budget matrix  Example of a coverage design  Cross band coverage planning  Examples Outline Important note: Slides present summary of the results. Detailed derivations are given in notes.

Florida Institute of technologies Balanced path  Forward and reverse link need to be balanced  Links are balanced if the maximum sustainable losses are the same  Base station has much more power than the mobile  Usually power from the base station needs to be reduced  Other ways to balance the link oUse different gain antennas for forward an reverse link oUse tower top mounted amplifiers oUse higher sensitivity receivers at the base station Page 3 Example of unbalanced links. To achieve balance power on the forward link need to be reduced by 4dB

Florida Institute of technologies Nominal cell radius  Radius that corresponds to maximum sustainable path loss  Determined using link budget analysis and appropriate propagation model  Used for nominal budget estimation  Dependant on the required reliability oMore reliable coverage results in smaller nominal radii oTypically design is done to 90% area reliability  Nominal call radius is a principal input into budgetary planning of the deployment  Practical experience – Nominal planning determines cell count within 10-15% margin Example. Link budget evaluation in suburban area determined maximum allowable path loss of 128dB. The operating frequency is 850MHz. Using Lee model determine the nominal cell radius. If the size of the suburban area is 400 square miles, determine the number of required cells. Assume 20% cell overlap. Answers: a)Nominal radius: 3.12 miles b)Area of the cell: 30.6 miles c)Cell count: 17 cells Page 4

Florida Institute of technologies Link budget matrix – coverage design  In basic nominal design ofour environments: dense urban, urban, suburban, rural othree design goals: in-building, in- vehicle, street level  RSLT – threshold is always the same  Each combination (environment, design goal) has its on RSLP threshold  Each RSLP value can be translated into corresponding nominal cell radius  Knowing nominal cell radii, for different environments one may estimate required cell count Page 5 Nominal design flow

Florida Institute of technologies Clutter maps (land classification maps)  Maps with land use classification  Available from USGS or commercial companies  Usually 12 standard categories  Each category may have its own propagation parameters  Each category may have its own design goals  In a nominal design phase – use nominal propagation parameters  In later phases of the design – more sophisticated propagation modeling is used oModels obtained through propagation modeling studies oThe models are obtained through measured versus predicted analysis oTypically 5-10 representative sites for each morphological type are surveyed Page 6 Example of a land classification map for Chicago area

Florida Institute of technologies Example of coverage design Consider a system with following parameters: Environment: one mile intercept: 109dB, slope: 38.4dB, StDev: 8dB Rx Sensitivity: Bandwidth: 30KHz, noise figure: 8dB, S/N min: 17dB In-building coverage: area reliability: 90%, building losses: 15dB, StDev: 6dB In-vehicle coverage: area reliability: 90%, vehicle losses: 8dB, StDev: 3dB Street level coverage: area reliability: 90% MS parameters: antenna gain 0dB, body loss 3dB BS parameters: ERP 47dBm Determine: a)Rx SensitivityA: dBm b)RSLp for in-building coverageA: -79dBm c)RSLp for in-vehicle coverageA: dBm d)RSLp for street levelA: -95dBm Page 7

Florida Institute of technologies Link budget evaluation Page 8 Examine attached link budget

Florida Institute of technologies Coverage planning across multiple bands  Different frequencies – different propagation  Majority of networks operate in multiple frequency bands  Examples: oIn US the networks may operate between: 850MHz and 1900MHz oIn Europe the networks may operate between 900MHz, 1800MHz and 2100MHz  Additional challenge – balance the coverage between bands oUse higher antenna gain oPower down lower frequency sites o“one to one” collocation between the bands  Deploy mobiles with dual band capabilities oAll technologies support multiband operation  Handoff and mobility management Page 9  Frequency allocation for different countries may be

Florida Institute of technologies Coverage maps  Provided on websites of every cellular provider  Three shades for three coverage criteria  Plots are usually generated for 90% reliability  One can easily see correspondence between signal level and population centers  Remember: objective is not to cover everything, but to cover more of relevant areas than the competition Page 10 Example – ATT coverage map (2011)

Florida Institute of technologies Homework assignment Homework 2 Page 11