Presentation on CITYCELL

Presentation on CITYCELLAbout Citycell

Citycell (Pacific Bangladesh Telecom Limited) is Bangladesh’s pioneering mobile

communications company and the only CDMA mobile operator in the country.

Citycell is a customer-driven organization whose mission is to deliver the latest in

advanced telecommunication services to Bangladesh. The company offers a full array of fixed and mobile services for consumers

and businesses that are focused on the unique needs of the Bangladeshi

community. Citycell’s growth strategy is to integrate superior customer service, highest

standard technology and choice of packages at affordable rates. The company

operates a 24-hour call centre with well trained operators to respond to customer queries. Citycell’s customer service are

open 7 days a week to ensure customers can access Citycell at any convenient time.

Citycell is focused on innovation and creating new ways for customers to stay in

touch and to do business. Citycell is offering a wide range of competitive pre-

paid and post-paid mobile packages as well as Value Added Services such as SMS and information based services. © Copyright

Pacific Bangladesh Telecom Ltd. All rights reserved.

3G CDMA Architecture

3G CDMA Architecture

• CDMA2000-1xEVDO System Architecture (Basic)• BTS: Base Station, which creates a single cell• BSC: Base Station Controller, which controls roaming

and channel allocations amongst various BSTs and is also referred to as a Radio Network Controller (RNC).

• MSC: Mobile Switching Center, which performs the telephony switching functions and is usually connected to an SS7 network.

• PDSN: Packet Data Serving Node, maintains IP communications between all MNs and the Packet Data Network (PDN), which in this diagram is the Internet.

How CDMA Works

• In this module you will learn how CDMA works, including: • CDMA signal generation • The types of codes used in CDMA • Forward and reverse link code channels • The words "code" and "division" are important parts of how CDMA works. CDMA uses codes to convert

between analog voice signals and digital signals. CDMA also uses codes to separate (or divide) voice and control data into data streams called "channels."

• These digital data stream channels should not be confused with frequency channels• Generating a CDMA signal• There are five steps in generating a CDMA signal. • analog to digital conversion • vocoding • encoding and interleaving • channelizing the signals • conversion of the digital signal to a Radio Frequency (RF) signal • The use of codes is a key part of this process.• Analog to digital conversion• The first step of CDMA signal generation is analog to digital conversion, sometimes called

A/D conversion. CDMA uses a technique called Pulse Code Modulation (PCM) to accomplish A/D conversion.

Analog to digital conversion

• Vocoder types• CDMA systems can use either an 8

kbps (kilobytes per second) or a 13 kbps vocoder. The earliest CDMA systems used the 8kbps vocoder to maximize capacity.

• The 13 kbps vocoder was later developed to provide a more land-line quality voice signal. The great improvement in quality was worth the slight reduction in capacity.

• Recently the CDMA community adopted a new 8 kbps vocoder. This new vocoder is usually referred to as the EVRC (Extended Variable Rate Coding). It combines the quality of 13 kbps vocoding with the capacity of the 8kbps data rate

How encoding works

• The type of encoding done at this stage is called "convolutional encoding." A simplified encoding scheme is shown here.

• A digital message consists of four bits (A, B, C, D) of vocoded data. Each bit is repeated three times. These encoded bits are called symbols.

• The decoder at the receiver uses a majority logic rule. Thus, if an error occurs, the redundancy can help recover the lost information.

Burst errors

• A burst error is a type of error in received digital telephone signals. Burst errors occur in clumps of adjacent symbols. These errors are caused by fading and interference.

• Encoding and interleaving reduce the effects of burst errors.

How interleaving works

• Interleaving is a simple but powerful method of reducing the effects of burst errors and recovering lost bits. In the example shown here the symbols from each group are interleaved (or scrambled) in a pattern that the receiver knows.

• De-interleaving at the receiver unscrambles the bits, spreading any burst errors that occur during transmission

Channelizing

• The encoded voice data is further encoded to separate it from other encoded voice data. The encoded symbols are then spread over the entire bandwidth of the CDMA channel. This process is called channelization

• The receiver knows the code and uses it to recover the voice data.

Walsh codes

• Walsh codes provide a means to uniquely identify each user on the forward link. Walsh codes have a unique mathematical property--they are "orthogonal."

• In other words, Walsh codes are unique enough that the voice data can only be recovered by a receiver applying the same Walsh code. All other signals are discarded as background noise.

PN codes

• Pseudorandom Noise (PN) codes uniquely identify users on the reverse link.

• A PN code is one that appears to be random, but isn't. The PN codes used in CDMA yield about 4.4 trillion combinations of code. This is a key reason why CDMA is so secure.

Digital to Radio Frequency (RF) conversion

• The BTS combines channelized data from all calls into one signal.

• It then converts the digital signal to a Radio Frequency (RF) signal for transmission

Comparative Network Speeds

9.6

28.8

64

114

144

384

2000

2400

GSM/PDC

PDC-P

CDMA

GPRS

CDMA 1xRTT

W-CDMA moving

W-CDMA stationary

CDMA 1xEV/DO

Theoretical data transmission speed

kbps

Network Coverage 

Citycell's network is available throughout Bangladesh, including the 3 Hill Tract Districts of Chittagong. The company continuously invests in network expansion programs designed to upgrade technology and add capacity to support its ever-increasing customer base.

64 District-wise Network Coverage 

PBTL Tariff of Leasing or Sharing of Transmission Capacity

A. Selling Unit: E1 (30 channels)

Monthly Rent/km Limit of Rate (BDT/km)  Remarks

Minimum Maximum

a) 0 - 50 km 560 840 Refer to Note below

b) 51 - 100 km 320 480 For distance more than (a)

c) 101 - 200 km 240 360 For distance more than (b)

d) 201 - 300 km 200 240 For distance more than (c)

e) Above 300 km 100 120 For distance more than (d)Note:i. For any lease/sublease, the minimum rental of BDT 16,800 per month shall be charged for any distance below 30 km.ii. A discount maybe considered depending on bulk, tenure of utilization, data/voice and type/category of client and the route of lease/sublease as per below.

Sl Type of client E1 rate per month (BDT)

    Discount of Bulk & Tenure (No. of E1 years)

12 - 48 E1 month 60 - 108 E1 month

120+ E1 month

1 Cellular Operator X1 Nil 15% 25%

2 PSTN Operator X2 Nil 15% 25%

3 Data/ISP/DDCSP/Corp.

X3 Nil 15% 25%

4 Rural Data/ILDTS/SM

E

X4 Nil 15% 25%

Variable Sample Price 1

Sample Price 2

Sample Price 3

Sample Price 4

Sample Price 5

X1 126,000 125,000 124,000 123,000 122,000

X2 100,800 100,000 99,200 98,400 97,600

X3 95,760 95,000 94,240 93,480 92,720

X4 90,972 90,250 89,528 88,806 88,084

B. Selling Unit: STM-1 (63 E1)

1.This rental shall be determined multiplying the unit cost of one E1 by 63

2.For an STM-1, a discount within the range of 20% to 70% may be considered depending on bulk,

tenure of utilization, data/voice and type/category of client and the route of lease/sublease.

VAT applicable

PBTL Tariff of Leasing or Sharing of Transmission Capacity

Device-Handsets

Nokia 3155Tk.8299

Huawei C5320Tk.7299

ZTE C360Tk.4200

Device-Handsets

Huawei C2800Tk.3399

Huawei C2800Tk.3399

Alcatel MusicTk .3000

Huawei C506Tk.2799

UTStarcom C1161Tk.2799

Description:ZTE MG880+ USB Modem

• · Interface: USB type • · Data rate: Up to 153.6 kbps• · Voice and SMS • · Support Incoming Calling Display, ring prompt• · Supporting RIM card • · Operating System supported: Windows 2000 / XP / Vista • · Air interface: CDMA2000 1X  

Description:Huawei EC321 PCMCIA Data Modem

• Package price (Data card + Connection):• Tk. 9,000

TK. 6,000• Description:• · Interface: (PCMCIA) type • · Data rate: Up to 153.6 kbps• · Voice and SMS • · Support Incoming Calling Display, ring prompt• · Large-capacity phone book \• · Supporting RIM card • · Operating System supported: Windows 2000 / XP•  • · Dimensions: 88.4mm (D) x 54mm (W) x 5mm (H)• · Weight: Approx. 38g• · Power consumption: <=3W • · Air interface: CDMA2000 1X • · Retractable antenna

Description: Huawei ETS-1200

• Hardware Price:• Tk. 11,999/- (Set price with local connection)• Accessories:• Internal Antenna • Rechargeable Battery (NI-MH) • Power Cord • Tel-Line cord• User Manual• Warranty Period:•      Hardware : 6 months•      Battery: 3 months • Additional deposit (Refundable):• For NWD & ISD - TK.1,000/- • Hardware inter-change price: • TK. 9,000/-

Citycell One connection & RIM

• Citycell OneTM is a full connectivity mobile package with Economy ISD facility 

•  Simplest mobile package in the market • Same call rate for pre-paid and post-paid

connections • Unbeatable call rates to Citycell numbers • Competitive call rates to other operators • Supports ZoomTM high speed wireless data • Full access to all Value Added Services (VAS) such

as Hello Tunes etc. • BTCL and ISD incoming and outgoing• Pre-paid   Tk. 200

• Post-paid Tk. 1,000 (credit limit Tk. 1,200)

• To make your service experience with Citycell more enjoyable, we have now introduced RIM (Removable User Identity Module) card. With the newly introduced RIM card, Citycell service is now available to you with more freedom and convenience.

• Citycell RIM cards come in 32k memory capacity that gives you more space to store your data. RIM comes to you with the added benefits of:

• Flexibility to change your handset (RIM compatible CDMA handset) whenever you like.

• Storing your important phone numbers or SMS in the RIM card, which will be with you even when you change your handset (Portability of user profile and personal data).

• The most secure environment for network connection and mobile e-services

Citycell Tariff Plane & One e top-up

Recharge Validily (for Citycell One Pre-paid Customers)

Amount (Tk.) Days

10 - 49 10

50 - 99 30

100 - 299 60

300 or more 180

Scratch-free smart recharge.

Zoom Tariff Chart (Pre-paid) & (Post-paid)

• Zoom Tariff Chart (Pre-paid)

• Tariff PlanTaka/minPeak10.00 am - 09.00 pm0.75Off-Peak09.00 pm - 12.00 am0.50Super Off-Peak12.00 am - 10.00 am0.251 second pulse Vat applicable Conditions apply

• High-speed wireless internet, wherever you go

• Near or far, indoors or outdoors, and even on the move, stay connected to the internet wherever you are. Zoom brings a unique solution to your countrywide wireless internet needs. Connect to the world using Citycell's unparalleled CDMA2000 1X technology and Zoom into a new era of high-speed  internet

Data plan Monthly limitMonthly tariff

(Tk.)

Zoom Saver N/A 0.02/KB

Zoom 100 100 MB 300

Zoom 300 300 MB 450

Zoom 500 500 MB 600

Zoom 1GB 1 GB 1,000

Zoom 3GB 3 GB 1,500

Hello Tunes

• Welcome everyone with a tune• Hello Tunes is here! Whoever calls you now will get to hear your choice of song,

poem or a funny tune. You can also record you own voice and set it as your Hello Tune. Gone are the days for boring beep beep. Citycell is now ready with a collection of thousands and thousands of tunes. Hello tunes library contains Bangla, English, Hindi–Urdu and Rude tunes. Under these, there are sub categories where you can find various types of tunes- from Rabindra Sangeet to band songs, Hindi film songs to Gazals, Hip Hop to Rock -all are here.

• SO WHAT’S THE DELAY? TUNE YOUR PHONE NOW!• To know more about registration and selection visit

www.mycitycell.com/hellotunes

Voice Gift & DOST• Look out for new gifts at Gift Shop • Send your loved ones your selected song as a

Music gift, your own voice message as a Voice Gift, or both together. At Gift Shop, you will find special gifts for birthdays and wedding anniversaries and a variety of personal messages on love, sorrow and much more. Look out for new gifts at Gift Shop

• Send your loved ones your selected song as a Music gift, your own voice message as a Voice Gift, or both together. At Gift Shop, you will find special gifts for birthdays and wedding anniversaries and a variety of personal messages on love Send your true feelings, in your own special way

• You can send your gifts to any mobile numberCharge: Tk. 4/min. + VATContent liability: SSD Tech

• DOST is back with more excitement and thrill! Now forget your tantrums and hook into the colorful world of DOSTJust dial 3678 (DOST) and enjoy the colorful ride of DOST. Here you can find the coolest people and chat with them anytime and from anywhere. Forget the hassles of logging into internet, here you can directly voice chat with your match.

• Those days of chatting without any idea whether that person is a charming girl or a naughty brat are over. Here you can actually choose DOST by listening the DOST names. For details you can peep into their profile and decide whether you want to talk with him/her or not.

• Loads of interesting people are waiting for your knock!

Voice based informationNews

Upgrade yourself with the leading national news by dialing the following numbers from you Citycell One connection

• Dial *444 for Channel i newsDial *333 for ATN Bangla News Dial *777 for NTV newsYou can listen to latest news updates 24 hours a day.

Weather ReportTo get up-to-date weather forecast and peep into the today’s temperature chart just dial *122

Daily EventsWhat’s hot and what’s not: Get detail information on daily events of Dhaka by dialing *123

Flight Schedule• Dial *124 from your Citycell One connection to access up-to-date flight schedules and

plan your trip without hassles.Train Schedule• Want to pick up your near ones from the train but don’t know the exact arrival time? Now you

can call *125 from your Citycell One connection and listen to train arrival times from wherever you are.

Voice based informationExchange Rate

Be updated with the most current exchange rate. Just Dial *126 and get the current rates of foreign currencies.Daily Horoscope

Keep yourself well informed about your luck. Hook into daily horoscope and know what your destiny is planning for you, just by dialing *127

Prayer TimeDon’t get confuse about the correct time for saying your Namaaj. Dial *786 and listen to the Namaaj timing.

Cricfone• Get the most recent updates of Cricket just by dialing 2580Daily Horoscope

Keep yourself well informed about your luck. Hook into daily horoscope and know what your destiny is planning for you, just by dialing *127

Prayer TimeDon’t get confuse about the correct time for saying your Namaaj. Dial *786 and listen to the Namaaj timing.

Cricfone• Get the most recent updates of Cricket just by dialing 2580• Browsing charge: Tk 2/minute + VAT

E-mail @ Mobile

Mobile -  General InformationE-mail over SMSAll Citycell Pre-paid & Post-paid customers have individual email account: If your mobile number is 01199121121, your email address will be: 01199121121@sms.citycell.com You can send to and receive emails from any email address anywhere in the world. Sending e-mail from E-mail over SMS to any e-mail address In the “Write New SMS” or “Create SMS” option of your mobile, type the e-mail address followed by the e-mail message (leave a SPACE between the address and the main message) & send it to 4444. For example - if you want to send an email to friend@yahoo.com with the Message "How are you?” Type a message friend@yahoo.com how are you? and send it to 4444

International Call E-ISD

• Call anyone anywhere in the worldfrom your Citycell One number

• Economy ISD (E-ISD)• Now make international calls at even lower rates

from your Citycell One number• Enjoy new E-ISD rates to 55 countries by dialing

012 + Country Code + Area Code + Phone Number

• Coverage and Tariff for E-ISD• Normal ISD• For normal ISD calls, please add ‘00’ before the

country code.• Standard BTCL rates with 15 second pulse will

be applicable for normal ISD calls

International Roaming

“International Roaming” is a type of roaming refers to the ability to move to a Foreign Service provider's network. It is, consequently, of particular interest to international tourists and business travelers.Pacific Bangladesh Telecom Limited Is now offering International Roaming Service in major CDMA networks to its Post-Paid Subscribers. PBTL is also working on introducing Inter-Standard Roaming (CDMA-GSM) for its Subscribers.

END OF PRESENTATION