Template3G Key Features
Control flow
Merupakan subsystem Jaringan GSM yang berhubungan dengan fungsi-fungsi Radio & Mobility.
Subsystem BSS terdiri dari Network Element penyusun TRAU, BSC, BTS & MS
FOR INTERNAL USE ONLY
SSS : SWITCHING SUBSYSTEM
MS : MOBILE STATION
Mengendalikan BTS-BTS yang dibawahinya
Manajemen Radio Resource (Alokasi Kanal Radio, Radio Measurement & Power Control)
Mengatur Proses Handover
FOR INTERNAL USE ONLY
Transcoding Adaptaion Unit (TRAU)
Menyediakan fungsi transcoding voice dan adaptasi data rate
Dapat ditempatkan di lokasi BSC atau MSC
Biasanya ditempatkan di lokasi MSC untuk menghemat link Transmisi.
FOR INTERNAL USE ONLY
Base Transveiver System (BTS)
BTS terdiri dari beberapa TX/RX
Radio service area suatu BTS membentuk cell
Manajemen physical layer di radio Interface
Transmisi dan multiplexing ke teresterial (Abis) Interface
FOR INTERNAL USE ONLY
Terdapat tiga jenis MS yaitu (Vehicle Mounted, Portable dan Handheld)
MS terdiri dari ME (Mobile Eqipment) dan SIM-Card
FOR INTERNAL USE ONLY
SIM berisi data-data spesifik pelanggan GSM
MS tidak dapat digungsikan tanpa SIM (Kecuali Emergeny Call)
SIM dilengkapi dengan fungsi pengamanan akses melalui PIN & PUK
Terdapat dua jenis SIM
FOR INTERNAL USE ONLY
cdma2000-3X
2G
2,5G
3G
cdma2000-3X
EDGE
GPRS
WCDMA
FDD
HSDPA
cdma2000-
1X
EDGE
GERAN
The room is channel frequency allocation
@!$#*()!*
^?!;)
*^%$#()
^?!;)
$$#@()&!!
<&^$$?+#
@@%$$
High bit rates
Frequency hopping
Packet data
Downlink transmit diversity
Not supported by the standard, but can be applied
FOR INTERNAL USE ONLY
GSM
3G-WCDMA
GSM/GPRS/
EDGE
Video telephony
Multitasking
3G-specific services take advantage of the higher bandwidth and/or real-time QoS
A number of mobile services are bearer independent in nature
Push-to-talk
Multicasting
Broadband
UL : 1940-1945 MHz
DL: 2130-2135 MHz
FOR INTERNAL USE ONLY
Chip rate of 3.84Mchip/s
Variable Spreading Factors of 16.8 Milion (UL) and 4-512 (DL)
Frequency Division Duplex and Time Division Duplex versions
European FDD Bands: Uplink 1920-1980MHz Downlink 2110-2170MHz Duplex Spacing of 190MHz
Unpaired TDD bands at 1900-1920MHz and 2010-2025MHz
Up to 16 active channels per terminal
FOR INTERNAL USE ONLY
f1
f2
f1
f1
f2
f2
f3
f1
f1
f2
f2
f3
f3
f1
f2
f1
f3
f1
M
S
1
M
S
2
M
S
3
M
S
4
BTS
Time
TDD = Time-division duplex
Uplink (UL) and downlink (DL) use the same frequency band, which is time-shared by the UL and DL
All users share the same
frequency/time domain
frequency
time
frequency
time
Uplink
Uplink
Uplink
Uplink
Downlink
Downlink
Downlink
Downlink
There are two basic formats used in radio communication, analog and digital.
The difference between the analog format and the digital format is that using analog, a person’s voice signal is transmitted over the air, while the digital format uses a string of 1s and 0s to represent the voice signal.
If someone were to lock on to the frequency used for an analog conversation they could actually hear the users’ voices.
In the digital format the observer would need to decode the 1s and 0s before hearing the conversation.
FOR INTERNAL USE ONLY
WCDMA FDD and TDD
Keywords
GENERIC AIR INTERFACE - Radio part of the network functionally separated from the rest of the network (RAN vs. CN)
Open interfaces (Uu, Iu, O&M plus others (target)).
Subsystems (Big picture)
Iu (PS)
Most vendors Node B’s currently ready for HSDPA
The GPRS brings few new network elements to the GSM network. The most important ones are the Serving GPRS Support Node (SGSN) and the Gateway GPRS Support Node (GGSN). Another important new element is the Point-To-Multipoint Service Center (PTM-SC) which is dedicated to the PTM services in the GPRS network. Also a new network element is the Border Gateway (BG) which is mainly needed for the security reasons and is situated on the connection to the Inter-PLMN backbone network. The Inter-PLMN and Intra-PLMN backbone network are also new elements, both IP-based networks. In addition there will be few new gateways in the GPRS system like the Charging Gateway and the Legal Interception Gateway
FOR INTERNAL USE ONLY
FOR INTERNAL USE ONLY
Multipaths
RAKE receiver takes different factors (attenuation, timing) into account and receiver fingers combine multipath signals to one signal
X
X
X
a1
a2
a3
X
Traffic load has direct effect on the cell size
Radio Resource Management provides means to control cell breathing in network optimisation
128 kbps
64 kbps
8 kbps
144 kbps
64 kbps
64 kbps
144 kbps
144 kbps
64 kbps
64 kbps
Note 1
WCDMA capacity is a function of radio environment, user mobility/location and propagation conditions. Examples above are just examples of WCDMA cell capacities of a 3 sector macro cell BS configuration.
Note 2
Different data speeds have different cell ranges. However this depends on link budget which is fixed (input for optimisation)
Chart3
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
Cell area
Load factor
Own cell load factor L (Own cell capacity)
Noise rise [dB] (Coverage)
Load factor directly corresponds to the supported traffic per cell
More traffic means more interference -> cell breathing
Max. recommended load : 70 %, typically 30-50 %
50 % load means 3 dB loss in link budget
BS
10% Network Load
75% Network Load
144 kbps Data
FOR INTERNAL USE ONLY
Soft handover;
Hard handover;
system e.g. WCDMA and GSM
Received signal strength
Soft Blocking;
Soft blocking capacity dependent on the interference from neighboring and own cells rather than hardware limitations.
FOR INTERNAL USE ONLY
Handover Analogy : TDMA & WCDMA
“Buat hubungan sebelum putus hubungan”
“Putus hubungan sebelum buat hubungan”
FOR INTERNAL USE ONLY
Downlink transmission power = Interference to the network
Uplink received power = Interference to own cell users
Uplink transmission power = Interference to other cells
FOR INTERNAL USE ONLY
Power Control System
Fast Power control is to control the transmitted power on the same level with received power. This leads to minimised interference and small power consumption
Power is controlled by parameters
With Optimum
Power Control
FOR INTERNAL USE ONLY
“Tx”
“Rx”
Dari pada menyuruh satu orang kuat membawa sepuluh beban sekaligus (AM), lebih baik menyuruh sepuluh orang biasa masing-masing membawa satu beban (potongan informasi).
Spread Spectrum
Di antara sepuluh orang tersebut, mungkin ada yang terjatuh akibat kubangan dan onggokan (noise& interference) atau akibat penghadang (jammer). Tetapi sebagian besar masih bisa sampai tujuan.
penghadang
“Shipping and Receiving” via CDMA
Whether in shipping and receiving, or in CDMA, packaging is extremely important!
Cargo is placed inside “nested” containers for protection and to allow addressing
The shipper packs in a certain order, and the receiver unpacks in the reverse order
CDMA “containers” are spreading codes
Spectrum Spreading Analogy
FedEx
Mailer
FedEx
Mailer
Data
Data
Shipping
Receiving
There are multiple spreading processes involved in IS-95, using three different spreading codes.
The process resembles shipping a package containing a diskette on which data has been recorded. The disk is put in a cardboard mailer for protection. The mailer is then put in an overnight letter package with an address label. The package is shipped through the shipping transmission system in the company of many other unrelated packages. The recipient tears open the overnight letter package and finds the cardboard mailer inside. She rips open the cardboard mailer and finds the floppy disk. The disk is placed in a drive and the data is recovered.
CDMA uses spreading codes to play the roles of the containers. The spreading codes accomplish protection of their contents and make it possible to address the shipment to its proper destination.
FOR INTERNAL USE ONLY
CDMA radio access technology: spreading/despreading
FOR INTERNAL USE ONLY
Channelization;
To tranms each symbol (data bit) to the number of chips (increase bandwidth)
Scrambling;
Applied scrambling code in the UL& DL path
Transmitting and receiving sides have the same code with the same phase.
Spreading
Scrambling
RX
spreading
code
generator
Descrambling
Despreading
TX
spreading
code
generator
Usage
Uplink: Separation of physical data (DPDCH) and control channels (DPCCH) from same terminal
Downlink: Separation of downlink connections to different users within one cell
Uplink: Separation of mobile
Length
Downlink also 512 chips
Different bit rates by changing the length of the code
Uplink: (1) 10 ms = 38400 chips or (2) 66.7 (s = 256 chips
Option (2) can be used with advanced base station receivers
Downlink: 10 ms = 38400 chips
Number of codes
Uplink: 16.8 million
Spreading
FOR INTERNAL USE ONLY
Code D
Code E
Users are separated by codes (code channels), not by frequency or time
There were 512 codes in the downlink path and 16.8 milion in the Uplink path
Signals of the other users are seen as noise-like interference
FOR INTERNAL USE ONLY
Higher-order Modulation
16QAM in complement to QPSK for higher peak bit rates
2 ms
Reduced round trip delay
Scheduling of users on 2 ms time basis
Fast Link Adaptation
Data rate adapted to radio conditions on 2 ms time basis
t
P
FOR INTERNAL USE ONLY
Ericsson’s HSDPA phasing
5 codes
HSDPA user throughput depends on the several factors:
UE capability & signal quality at UE position (C/I)
Number of HSDPA users per cell (simultaneous active users)
RBS Resource (Number of codes, PA, CE, Scheduling, R99 load, QoS, features)
Transport resource (E1, IMA, features)
End to end TCP/IP performance
FOR INTERNAL USE ONLY
Required CE per user
R99+HSDPA active, no traffic
Sheet1
R99
HSDPA
VIDEO CALL
STEP 1
STEP 2
STEP 3
Choose the number of the person you wish to see and speak to
Press the Video Call button to make a Call
The Video Call is now connected
FOR INTERNAL USE ONLY
Existing content : EPL 2006/2007
We are preparing the mechanism to provide ESPN Sport Centre Video on daily basis
Launched 9 Sep 2006
Dunia Religi
We are building religious video library (some of it had been published in Mobile Video)
Dunia Religi Menu sign of sheet will be circulated this week
Launched 29 Sep 2006
Dunia Anak
At the first stage, content will be provided by Disney Mobile (Elasitas)
3G Disney Content : Mobisode, Movie Short Clip & Voice tone
Launched 7 Oct 2006
Dunia Musik
At the first phase, it will contain of Video Music clip from our RBT partner
The next phase will use M-Use as Dunia Musik platform
VIDEO STREAMING
No.
Content
Description
Delivery
Partner
1.
Liputan6
2.
Headline News dari MetroTV diinformasikan setiap jam (24 x sehari)
Streaming
4.
Top Stories
Berita-berita Utama terbaik dari Metro TV diinformasikan 1 kali sehari setiap jam 18.00
Streaming
5.
Top of The Top
Ringkasan Berita Utama dalam 1 hari, diinformasikan 1 x sehari jam 21.30 dari Metro TV
Streaming
6.
Video Highlight/Match Liga Inggris
Streaming
9.
Streaming
10.
Video Klip/Trailler film : Cars & Da Vinci code
Streaming
No
Content
Description
Delivery
Partner
11.
Streaming
15.
Streaming
No
Content
Description
Delivery
Partner
17.
Berita
CNA
Streaming
TelkomVision
CNBC
Streaming
Streaming
Elasitas
Streaming
Visitel
Streaming
LDS
SERVICE OVERVIEW
Layanan tambahan pada Call Center yang memungkinkan pelanggan Telkomsel dapat berinteraksi dengan Agent Call Centre Telkomsel tidak hanya melalui suara tetapi juga dapat melalui Video ( bertatap muka dengan Agent )
kartuHALO
simPATI
FOR INTERNAL USE ONLY
FOR INTERNAL USE ONLY
3G optimization Engineer
RADIO ACCESS
CORE NETWORK
The GPRS brings few new network elements to the GSM network. The most important ones are the Serving GPRS Support Node (SGSN) and the Gateway GPRS Support Node (GGSN). Another important new element is the Point-To-Multipoint Service Center (PTM-SC) which is dedicated to the PTM services in the GPRS network. Also a new network element is the Border Gateway (BG) which is mainly needed for the security reasons and is situated on the connection to the Inter-PLMN backbone network. The Inter-PLMN and Intra-PLMN backbone network are also new elements, both IP-based networks. In addition there will be few new gateways in the GPRS system like the Charging Gateway and the Legal Interception Gateway
FOR INTERNAL USE ONLY
Troubleshooting Voice Traffic Problem
MSC
Database / Parameter Error
Cable connection Failure.
Bad connection.
Bad connection
- Bad connection
- Bad connection
- Bad connection
- Bad connection
Database / Parameter Error
Cable connection Failure.
UE memory
TRX-capacity (peak hour, CS-load)
Abis and Gb transmission
Application server capacity geographical location [e.g. localised contet caching vs. centralised servers]
Module Failure
Antenna position blocking by obstacle.
Grounding Failure.
(DPDCH) and control channels
(DPCCH) from same terminal
Downlink: Separation of downlink
one cell
Length
m
s)
length of the code
66.7
m
base station receivers
Number of codes
code = spreading factor
Uplink: 16.8 million
Spreading
bandwidth
RAXB signalling consume no CE0 CE