CFC PLANNING PROJECT

MAIN POINTS• BACKGROUND AND DESCRIPTION OF THE PROBLEM• DESIGN LIMITATIONS AND METHODOLOGIES• COVERAGE DESIGN• COMPONENT CALCULATIONS• LINK BUDGET CALCULATIONS• OPTIMIZATION STAGE

BACKGROUND AND DESCRIPTION OF THE PROBLEM

MAIN RESEARCH OBJECTIVE (PROJECT SCOPE)

TECHNICAL NEED FOR THIS PROJECT• LACK OF COVERAGE IN THE MALL (SPECIALLY 3G COVERAGE)• WE NEED MORE AND MORE CAPACITY INDOOR• THE MACRO SITES MUST BE SUPPORTED WITH MICRO AND PICO SITES IN THE

MALL• THE DESIGN MUST BE OPTIMUM AND FLEXIBLE FOR FUTURE NEEDS (DATA

RATES, NEW SERVICES AND MORE CAPACITY) AND IT MUST KEEP UP WITH EXTENSIONS

BUSINESS NEEDS FOR THIS PROJECT

• 70-80% OF CALLS ORIGINATE IN THE INDOOR AREA• THIS INVESTMENT MUST MAKE A POSITIVE BUSINESS CASE AND A GOOD AND

FAST ROI • COST REDUCTION OF UP TO 65% CAN BE ACHIEVED BY COVERING THE 3G

(AND 4G IF NEEDED ALSO) USERS FROM INSIDE THE BUILDING WITH INDOOR COVERAGE SYSTEMS

THE PROJECT METHODOLOGY AND LIMITATION (CHALLENGES)

THE 3G CHALLENGE

• POWER LOAD PER USER WILL INCREASE IN THE INDOOR (POWER IS A VERY IMPORTANT RESOURCE IN 3G)• MANY SOFT HAND OVERS ARE EXPECTED • PILOT POLLUTION IS EXPECTED DUE TO SMALL AREA AND THE MACRO SITES

EFFECT

BASIC INDOOR METHODOLOGIES COMMON FOR 2G AND 3G

• ISOLATION

• HIGH RISE PROBLEM

• THE ZONE PLANNING CONCEPT

ISOLATION

HIGH RISE PROBLEM

THE ZONE PLANNING CONCEPT

COVERAGE DESIGN

GSM/UMTS DESIGN

FREQUENCY SELECTION

• SELECTING 3 FREQUENCIES FROM 1800 BAND TO INCREASE PENETRATION • SELECTING 1 FREQUENCY 2100 AND USE THREE CODES• ALL VOICE CALLS WILL BE ORIGINATED ON 2G AND USE 3G FOR DATA ONLY

TO MAXIMIZE THROUGHPUT

REUSE AREA

REUSE AREA CALCULATIONS

REUSE AREA CALCULATIONS• FOR 24 TIME SLOTS AND 2% GOS, I WIIL HAVE 16.63 E• AS THE GIVEN DATA IS 150 USERS EVERY 100 M SO I CALCULATED THE AREA

AS 100*100= 10,000 M2 WITH 30ME FOR EVERY USER• THEN I WILL HAVE 4.5 E FOR EVERY 10,000 M2 (ACCORDING TO THE GIVEN

DATA)

REUSE AREA CALCULATIONS4.5------10,000M2

16.63------AREA TO BE REUSED• AREA= (16.63*10,000)/4.5=36,900 M2

• I WILL REUSE EVERY 36,900 M2 (OR EVERY ONE CELL)

CELL DISTRIBUTION

FOOD COURT (1 CELL 2G AND 1 CELL 3G)

CARREFOUR AND THE CORRIDOR IN FRONT OF IT (1 SECTOR)

CENTER POINT AREA (1 SECTOR)

GARAGE (REPEATERS FROM CENTER POINT AREA)

THE FOUNTAIN AREA AND BUILDINGS AROUND IT (1 CELL)

THE MAIN CORRIDOR OF THE MALL IN THE 3 FLOORS

• 2 SECTORS IN EVERY FLOOR EXCEPT FLOOR 1 BECAUSE IT IS SMALLER

FLOOR 1

FLOOR 2

FLOOR 3

PARKING 1 AND 2 AND STREETS NEAR TO THEM

PARKING 3 AND STREETS NEAR TO IT

DAS DISTRIBUTION

ACTIVE DAS SYSTEM

DAS DISTRIBUTION

COMPONENTS CALCULATIONS

ANTENNAS

• 5 STREET LEVEL-DIRECTIONAL ANTENNAS• 10 OMNIDIRECTIONAL ANTENNAS• 1 MICROWAVE ANTENNA IN THE SITE TO TRANSMIT ALL THE TRAFFIC TO THE

BSC

REPEATERS

• 7 REPEATERS AND MAY BE INCREASED AFTER OPTIMIZATION

SPLITTERS

• NO. OF 1:3 SPLITTER = 3 • NO. OF 1:2 SPLITTER = 1

RRU (ONE FOR EVERY AREA)• FOUNTAIN AREA• FOOD COURT AREA• FLOOR 3 AREA (CARREFOUR AND THE MAIN CORRIDOR)• FLOOR 1 AND 2 TOGETHER

MASTER UNIT

• ONE MASTER UNIT WILL BE PLACED IN THE TELECOM ROOM

SHELTER, ACS AND CABLES

• 1 SHELTER TO PROTECT THE MASTER UNIT• 3 KM OF COAXIAL CABLES

LINK BUDGET CALCULATIONS

LINK BUDGET CALCULATIONS

• COAXIAL LOSSES

• SPLITTER LOSSES

• ANTENNA AND AMPLIFIERS GAINS

• AIR LOSSES

• WALL AND BODY LOSSES

OPTIMIZATION STAGE

WALK TEST

• SIGNAL REACH IN THE MALL• SIGNAL QUALITY• GOS• MEASURING ANY KPI

FINAL PLANNING STAGE

• IT IS EXPECTED TO FIND SOME PROBLEMS • A MAXIMUM DEVIATION +VE OR –VE 10 % IS ACCEPTED FINALLY.• IMPROVING ANY KPI UNDER THE EXPECTED PERFORMANCE

QUESTIONS

HOW MANY SITES YOU NEED TO COVER YOUR SOLUTION?

• I WILL USE ACTIVE DAS SOLUTION SO I USE ONE MASTER UNIT AND DISTRIBUTE USING MULTIPLE RRUS IN DIFFERENT AREAS AND FINALLY ALL TRAFFIC WILL BE TRANSMITTED BY ONE MICROWAVE LINK.

WHAT ARE THE TYPES OF SITES OF SITES YOU WILL USE AT YOUR DESIGN?

• ALL INDOOR RRUS AND ANTENNAS ARE INDOOR SITES.• THE PARKING AREA AND THE FOUNTAIN ARE STREET LEVEL SITES.

IF WE HAVE A TRAFFIC OF 20E UNDER GOS=2%, IS IT BETTER TO USE ONE CELL OR TO SPLIT THE TRAFFIC BETWEEN TWO CELLS EACH CARRY 10E?

• FOR 2G CALCULATIONS ONLY I HAVE 16.63E SO I CANNOT USE ONE CELL TO COVER 20E WITH FULL RATE BUT I CAN USE HALF RATE TECHNIQUE TO COVER ALL THE 20E IN ONE CELL.• IF I SPLIT THE CELL I CAN COVER 32E AND IT WILL BE WASTE OF RESOURCES

NOTE

• I DID NOT USE THE HALF RATE TECHNIQUE IN MY CALCULATIONS BECAUSE THE TRAFFIC IN THE MALL WILL INCREASE GRADUALLY AND I WANT THE DESIGN TO LAST LONGEST TIME IN THE FUTURE TO ACCEPT NEW USERS, MORE CAPACITY, NEW SERVICES AND MORE DATA RATES

NOTE

• I DID NOT USE BACK TO BACK ANTENNA TECHNIQUE DUE TO MALL STRUCTURE (CORRIDORS AND SQUARES)

NOTE

• I MAY USE OPTICAL FIBER TO TRANSMIT SIGNAL TO THE FOUNTAIN AREA OR I MAY CONNECT THEM BY A MICROWAVE LINK