Main Features
Cabinet extendible on site (1-door to 2-doors.)
Front access to BTS equipment only
Number of antennas:
Full variety of options (BBU, MW, REK, TMA, CrossConn, etc.)
3-phase or 1-phase AC mains
Temp. maintained by air/air heat exchanger and heaters
Types of Cabinet and Configurations
6 (3 sect.) in MBO1,
12 (6 sectors) in MBO2
Height:
total 1485mm,
Width Width :
tota totall MBO1 MBO1 903m 903mm, m, total total MBO2 MBO2 1520 1520mm mm,,
Depth:
total 747mm
MBO1 - Multi Standard Standard BTS Outdoor 1-door
up to 8 TRE GSM (1x8, 2x4, 3x 2 ) in 4 subracks
MBO2 - Multi Standard Standard BTS Outdoor 2-doors
n MBO2 Characteristics arac er s cs MBO1 a and
BATTERY saving features
One TRX “full power” + others “60% power”
Automatic Shutdown
Keeps BCCH TRX alive
Configurable timer to start operating
Example of battery times:
MBO2 MBO2 - S4,4,4 S4,4,4 - one BU90 BU90 (mul (multip tiply ly the the time time up to to 3xBU) 3xBU)
“Auto shutdown” not enable
120 min (2h)
“Auto shutdown” enable (timer set to 0 min)
“Auto shutdown” enable (timer set to 150 min)
340 min (5.6h) 240 min (4h)
n egra e m crowave EVOLIUM™ integrated microwave
BSC
BTS
MWODU MWIDU
S I I U D D M U U
BTS
AN
Alcatel EVOLIUM™ solution Wide floor space
Solution X
on gura on
TRX The dimensioning of the TRX is done according to the profile of the subscriber that will use the voice and data (GPRS) channels. The amount of each group of subscribers and the type of adopted signaling (normal, high or very high) is also considered.
e
on gura on
Site e site dimensioning is e according to the ntity of sectors and amou amount nt of BTS's TS's.. e configuration of the S’s S’s de depe pend ndss on the the ntity of TRX. The S has a limitation arding the quantity the TRX not only ause of the hardware itation but also ause of the
Setor A
Setor C Setor B
e uc ng the e O&M c os Reducing cost
dvanced and compact platform
Scalable and flexible to meet all network requirements
Effi Effici cien entt res resou ourc rce e usa usage ge on Air, Air, Abis Abis and and Ater Ater inte interf rfac aces es
llowing optimized investment strategy
Low start-up cost
High growth potential to meet traffic requirements
Support of more than 144,000 BHCA (busy hour call attempts)
No hardware upgrade for GPRS
ntelligent and flexible call handling
Enhance Enhanced d Full Rate Rate - Adapti Adaptive ve Multi Multi Rate Rate
32-128 32-128TRX TRX 192-28 192-288TR 8TRX X 352
on gura on
ccess Network (BTS-BSC)
topology
multidrop
chain loop
star
meshed
BSC
on gura on
SC configuration
Number of BTS
Number of Cells
Number of TRXs
CODEC to be used
Traffic
A / Ate Aterr mux mux inte interf rfac acee PCM PCM
Abis Ab is Inte Interf rfac acee PCM PCM
Number 7 signaling channels Topology
BSC
on gura on
BSC capacity
ransm ss on w
BTS
BSC hub
Satellite
SC
BTS Built-in Built-in EVOLIUM™ EVOLIUM™ Microwave Microwave or EVOLIUM™ LMDS
Leased Line
HDSL ance from BSC
BTS
BT
en ew s an ar o r transcoders ransco ers The new standard or
Capacity
Sized to your current need with support for more capacity as your network growt
192 A itf (48 Ater Ater mux) capaci capacity, ty, ie up to 5600 5600 Erl per TC TC rack
Compactness
Compact equipment practice : 19” standard standard rack - only 2m height
Unrival compactness with only 3.75 liters per A interface
Flexibility
Rack sharing feature
Multiple Multiple BSCs connectio connection n simplifies simplifies your network network design
A new generation TC With built-in high-performance for maximum capacit
ransco er on gura on
25 Transcoder 5 TC has capacity for 4 rack rackss of up to 12 120 boards each, in a al of up to 48 MT120 rds for each rack. 5 TC can transport a of of up up to to 24 24 BCS' BCS'ss ing into account the imum of two connected 120 boards to each .
Ater
Ater
4x
MT120 4x
MT120
Up to 48 boards
Ater
4x
MT120
on gura on
A935 MFS • GPRS (General Packet Radio Service •Data transmission based on packet Swithc Swithchin hing g instea instead d of Circui Circuitt Swithcin Swithcin • Mail, Mail, Interne Internett Browsin Browsing g (Web Surfe Surfers rs etc • No end-to end-to-end -end conn connect ection ion requi requirem remee no channel individual allocation, shar resources between users
MFS
c aa y calability
OMC-R (A 1353)
o o t p U e l l s ls C 0 3 5 0 B T S
Alcatel OMC-R is GPRS rea B T S
BSC B T S
ex y Flexibility
One One Platf latfor orm m Mana Manage ges s up up to: to:
PCU
100 100 BSC, BSC, 3500 3500 Cell Cells s
Aut Autoo-De Dete tect ctio ion n of BTS BTS equi equip p (BSC Sync)
n - to o- End n Solution o u on : Topology op opo ogy End NSS
MSC/VLR
SS7 Other PLMN
BSS OMC-S
SS7 IN
Voice Mail
PSTN
BTS
SMS C
CC&B
EIR
ns
INTERNET
HLR/AuC
TC
BSC
MFS
BTS
Charging Gateway
NSS GPRS
OMC-R SGSN
Frame Relay
Voice Data Mixed Signaling
GGSN
GPRS Backbone
W@P Server GPRS Interception
Border Border Gateway
OMC-G
DNS/ DHCP
vo um
Best-in-class capacity and performance
From 2.5K to 1,000K subs (2M*) From 36 up to 800K BHCA (8M*) From 16 up to 2,048 PCM (16K*)
– –
Alcatel Evolium™ MS
A vast array of features
High revenue generation
Lowest OPEX on the market
Low foot print:
Low consumption: Max 24K Watts
Up to 17 racks (400K subs)
Smooth evolution towards 3G solutions
MSC toda
No loss of air time with high peaks Top quality service, non stop
ca e
HLR/AuC A8360
rc
ec ure
Alcatel Evolium®
MSC/VLR RCP/VLR A1421
IWF
4 x E 1 ( M A P )
BTS BT
4 x E1 INAP
PSTN/ ISDN
k x E1 BSC
n x E1 (ISUP)
BTS
m x E1 (A Interface)
With Echo Canceller
BSC
A1000 E10 MM
SSP
her Devices:
Up to 2 Million Subscribers
CDR (Call Detail Record)/FileCollector STM-1 Interfaces
BTS
Up to 4 RCP
EIR (Equipment Identity Register) Low Low cons consup upti tion on 1,3k 1,3kW W per per Rack Rack
BTS
Less than 22 Racks total
SMSC (Short Message Service Center)
BSS
NMC 2 pervision of Alarms, Elimination of malfunctions, Performance Management, curity Management ating Subscriptions, Delating Subscriptions, Collecting Charging Tickets.
Traffic Manag
DCN X.25 / IP
Common De
A1000 NSS HLR
A1000E10 NB
HW Equipment Views
Common Alar
Agenda:
GSM Key Features
GSM Sys System tem Arc Archit hitect ecture ure BSS Subsystem NSS Subsystem
Desi De sign gn Considerations Consid Con sider erat atio ions ns Design Dimmensioni Dimmen sioning ng (Cells (Cells,, Traff Traffic, ic, Users) Spec Sp ectr trum um and Co Cove vera rage ge
Interfaces
n ter ace UM IIn
UM s is the air interface ween the mobile 4,615ms tion and the BTS.
0,577ms
TDMA Frame N +1
200 kHz
TN 7 TN 6 TN 5 TN 4
TDMA Frame N
TN 3 TN 2 TN 1 TN 0 FDMA FDMA Upli Uplink nk MS Tx 1
2
3
73
74
n ter ace UM IIn
UM Dimensioning
Dual Rate total mobile penetration TRAFFIC TRAFFIC VOLU VOLUME ME per per subscri subscriber ber (in (in mErl) mErl) Number of subscriber per cell TRAFFIC BLOCKING probability
GPRS Parameters Type of Services (Business, Consumer, …) Number of users per type of service Data Volume per user per Busy Hour (kbits) Throughput per service
gna ng UM In ter ace - ignaling
Optional!!! Signaling Parameters at the Busy Hour CALL attempt (Mobile Originated) CALL attempt (Mobile Terminated) Short Message Services (Mobile Originated) Short Message Services (Mobile Terminated) LOCATION UPDATE IMSI ATTACH IMSI DETACH
s In ter ace Abis
Abis M
TRX B
ile ion
TRX C TRX A
E1 BTS
Abis
The Abis link can be configured to use different schemes o multiplexing that fin the optimized occup of the link. The figu shows a sample of multiplex usage on t Abis link
BSC
s Dimensioning mens on ng Abis
Abis The The dim dimen ensi sion onin ingg of the the Ab Abis is link link is done done accord according ing to to the quantit quantityy of TRX, TRX, BTS's BTS's cabinets, cells and the type of multiplex used on the signaling. The usage of some features will also impact on the dimens dimensioni ioning ng of of the the Abis Abis link. link. The The following table shows just an example of occupancy on the Abis link. TRX A
TRX C
OML
Abis E1
BSC
er mux Ater
Channels occupancy
BSC
A In ter ace
N7
1 x E1 0
16 N7
Ater
4xE
TC 0
A
16
MSC PSTN
n e ce Dim me ns o n ing ng A IInt nter err a ace ac Dimen ensi sion onin
A Interface The calc calculat ulation ion of of the the PCM’s PCM’s links links used used for the A interface is done according to the traffic generated by the BTS taking into account the busy channels only using the Erlang B law. The table shown presents an example of traffic capacity using Blocking Rate of 0.1%. A TC
0
N7
16
4 x E1
MSC
er mux Dimensioning mens on ng Ater
Channels occupancy
BSC
N7
1 x E1 0
16 N7
Ater
4
TC 0
ter he Ater int interface is the A terface multiplexed by 4:1.
A
16
MSC PSTN
er on igura tion Ater
erfaces
Carrier/Circuit Identification Code (CIC) 0
16
TC
E1 100% voice
N7
Ater Ater
BSC
optional
Ater GPRS Identification Code (GIC)
E1
BSCGp layer GSL
MFS
er on gura on
erfaces CIC Ater BSC
TC
MFS Ater
CIC
GIC
Ex.: 25% Voice + 75% GPRS
Gb (Frame Relay)
SGSN
e wo r
n er aces
mens on ng
imensioning examples:
e wor
es gn
Coverage, Traffic and Design Parameters
overage Issues Coverage
cquiring: Maps ( compulsory) Aerial pictures ( optional) Digital database (optional: used for Radio planning)
Ex is ting Ne twor k (B
)
Gathering all information about the existing site
Coordinates
Coverage area of each sector
Antenna heights
Infrastructure available
Antenna tower
Rooftop / Greenfield
Energy...
eograp ca
Land Usage
Dense Urban,
Urban,
Suburban,
Residential,
Industrial,
Forest,
Village,
Open area,...
o e ng
e rv ce Requirement eq equ remen ervice
pe of services areas d typical margin Deep Indoor (20 db) Indoor first wall (15 db) In-car without car kit (10 db) Outdoor (0 db)
ade of service Coverage Probability (impacts Shadowing margin) typical: 90 % (suburb and rural) 95% (dense urban and
BT
ys tem e lec tion
What kind of cell?
Macro, micro,..pico
BTS System choice
combining elements?
ANC low loss, ANC combining mode, ANC+ANY, low lo configuration….
TMA, Range Extension Kit?
Antenna System:
antenna type (gain, aperture), antenna height, feeder length...
BT
ys tem e lec tion
BT
ys tem e lec tion
ropaga on Models o es e ec on Propagation election
Macrocell model
Hata models
Hata Hata for for 900 900 MHZ MHZ ban band d
COST 231 231 Hata ata for 1800 MHZ
Cost Cost 231 231 Walf Walfis ishh-Ik Ikeg egam amii Mod Model el
large cells (cell range> 1 km), antenna. height (> 30 m)
small cells (cell range > 20 m)
Micr Microce ocell llss model model : Ray Ray tra tracin cingg
e e dime men so nn g (1 3) ell s site sit dimensi nsioni oning ng
oal: Cells sites imensioning to cope with ..
coverage , traffic, and grade of service requirements
utput:
Number of sites Site Configuration Nb of sector Three (Urban areas) Two (Roads)
e elll el
m en s ioni on n g23 ite Di ite Dime mens nsio ning ng
Coverage Approach
Assume a max TRX per cell when choosing BTS system, nb_TRX_max
Use a Power budget tool to determine a Cell radius
Using cell_radius, calculate Site/Cell area
Use Area size and site_area/cell_area to deduce number site/cells to cover the Area, namely nb_sites/nb_cells
e elll el
m en s ioni on n g33 ite Di ite Dime mens nsio ning ng
raffic Approach
Use Use traf traffi ficc pe perr sub sub and and nb sub sub in the the area area to de dedu duce ce tota totall traffic in the Area, named traffic_area Use traff traffic_ ic_are areaa and nb_cel nb_cells ls to calcul calculate ate traffic_per_cell Use Use Erl_ Erl_B_ B_la law( w( traff traffic ic_p _per er_c _cel ell, l, bl blk_p k_pro rob) b) to calcul calculat atee nb_TCH Assu Assume me typ typic ical al nb_S nb_SDC DCCH CH and and use use nb_T nb_TCH CH to to calc calcul ulat atee nb_TRX
heck
Check that nb_TRX < nb_TRX_max (see previous slide) If No, assume another nb_TRX_max and perform again
Interesting Results
Service parameters has dramatic effects on design results!
90% to 95% 95% Pcov Pcov
--> 50% sites sites increa increase se
15dB to 20dB Indoor margin
--> 100% sites increase
e
a us
gures
ra c
gures
•Full Rate: AM R FR
•Half Rate:
TRX / Ce Ce l l
Er l / Ce Ce l l
Sub s / Ce Ce l l
Sub s / S Sii t e 3 Se ct or
1
2 ,9 3 4 9 1 8 6 4
294
882
2
7 ,4 0 1 8 2 1 6 1
743
2229
3
1 4 ,0 3 6 3 4 2 6
1409
4227
4
2 0 ,1 5 2 0 6 9 1
2022
6066
5
2 7 ,3 4 4 7 4 9 5
2744
8232
6
3 2 ,8 3 3 4 2 3 6
3295
9885
7
4 0 ,2 5 8 2 9 3 2
4041
12123
8
4 6 ,8 1 7 4 5 1 5
4699
14097
an w
gures
n eres ng Results esu s Interesting Number sites for 15dB indoor service
60
50
40
30
20
10
0 Urban
Medium urban
Suburban
Total
e wor
ANNEXES
es gn
ower
u ge
Purpose: determine the Maximum Allowable Path Loss between Transmitter and Receiver, both in Up and Downli Exam Exampl plee in GSM GSM 1800 1800:: (rem (remin inde derr X db dbm m = 10*L 10*Log og(Y (Y mW)) mW))
UpLink:
BTS transmits with 35 W (45.44 dbm), hand handse sett rec recei eive vess wit with h - 102 102 dbm dbm sens sensit itiv ivit ityy
DownLink :
handset transmits with 1 W (30 dbm) BTS rece receive ivess with with - 11 1111 dbm sensit sensitivi ivity ty
ow er Bud g e t (2 Po Powe wer Bu udge get (2 3)
ower
u ge
Inputs needed: Libraries of Equipment characteristics BTS Mobile handsets antennas Subscriber’s area distribution (per morphostructure) Services definition
Output: Computation of path loss various environments balance uplink / downlink Cell radius calculation
N imensioning IInputs nputs NSS D Dimensioning imensioning Inputs
General Information
Number of GSM subscribers Specify per phase if necessary
Service : full GSM mobility / Fixed GSM subscribers
Minimum number of MSC 1 by default
% of Prepaid subscribers Services Information
% of subscribers with a conditional call forwarding activated
mens on ng npu s imensioning Inputs
Traffic Average Traffic per Subscriber (OT+TT)
Specify if Prepaid and Postpaid traffic are different or identical
Mean Call duration (in seconds)
Overload coefficient in Traffic (LoadB/LoadA)
mens on ng npu s imensioning Inputs
Traffic
% Fax / Data calls by default 1%
Mean Call duration for Fax/Data (in seconds)
Number of originating SMS calls (Nb/MS/h)
Number of terminating SMS calls (Nb/MS/h)
Direct calls towards Voice Mail (% on OC and duration)
Forwarded calls towards Voice Mail (% on Rerouted calls and duration
% of MS using conference
N imensioning IInputs nputs NSS D Dimensioning imensioning Inputs
IN characteristics
% of IN call
Type of IN used (IN-CS1, Camel Phase1, Camel Phase2,...
Type and characteristics of (Prepaid, VPN,...)
Intelligent Peripheral required (digital announcement, DTM reception,...)
N imensioning IInputs nputs NSS D Dimensioning imensioning Inputs
Interface Information
SDH/STM1 interface possible on PLMN/PSTN – Possibl Possible e if the custome customerr has a SDH SDH Network Network and ADM ADM connec connection tion available
Signalling Signalling (standard (standard ISUP ISUP V2, R2 R2 signaling,. signaling,...) ..) – By default default 100% ISUP ISUP V2
Trunk Impedance (75ohms, 120ohms)
Number Number of of Signall Signalling ing links links (towar (towards ds SMSC, SMSC, Voice Voice Mail Mail,, SCP, SCP, others others switches,...)
Number of PCM towards SMSC, Voice Mail, SCP,...
mens on ng npu s
Mobility Location Registration
Intra VLR Location Updates Per MS per hour
Inter VLR Location Updates Per MS per hour
Handover
HO number of intra-MSC handovers Inter VLR Location Loc ation Updates Per MS per hour
HO number of subsequent inter-MSC handovers Per MS per hour
N imensioning IInputs nputs NSS D Dimensioning
Mobility Roaming
RO Ratio of HLR subscribers visiting other networks (out-roamers) (
RO Ratio of MSC subscribers coming from other networks (in-roame (%)
