ISEM 3410 Telecommunications and Networking Group 4 10000593 Chan Chun Yin 11002417 Choi Man Hei...

transcript

ISEM 3410

Telecommunications and Networking

Group 4

10000593 Chan Chun Yin

11002417 Choi Man Hei

11015780 Wong Wai Mei

MOBILE NETWORKING SYSTEM

ISEM 3410 Telecommunications and Networking 2

Agenda

•1. Mobile usage phenomena

•2. Mobile networking system concept

•3. Case: Yahoo! HK

•4. Transformation from 1G to 4G

•5. Advantage of 3G/4G

•6. Disadvantage of 3G/4G

•7. Application

•8. Future expectation

1. Mobile usage phenomena (1/4)• Asia – World leader

• Mobile data consumption = 659 MB/month

• up by 10% in the last 6 months

•North America

• Internet data usage is up by 120%

• Europe

• YouTube represents more than 20% of peak period

downstream traffic on mobile networks

1. Mobile usage phenomena (2/4)

Phone checking >6 per hour• <18: 58%• 18-30: 52%• 31-40: 45%

Phone purpose• Whatsapp:

1. Mobile usage phenomena (3/4)

• Whatsapp trend makes people feel uncomfortable without phones.

• Checking phones >30 times even in washroom

Interesting Fact (4/4)•87% American adults who own a cell phone•84% Cell phone owners who could not go a single day without their device •81% Growth of smartphone usage in 2012•70% Growth of global mobile data traffic in 2012•51% Traffic on mobile devices from video in 2012•45% American adults who own a smartphone•44% Cell phone owners who have slept with their phone nearby because they didn’t want to miss a notification

2. Mobile networking system concept (1/2)• Mobile phone = portable telephone receives

or makes calls through a cell site/base station/transmitting tower.

• Digital cellular technologies:

• Global System for Mobile Communications (GSM),

• General Packet Radio Service (GPRS),

• cdmaOne, CDMA2000,

• Evolution-Data Optimized (EV-DO),

• Enhanced Data Rates for GSM Evolution (EDGE),

• Universal Mobile Telecommunications System (UMTS),

• Digital Enhanced Cordless Telecommunications (DECT),

• Digital AMPS (IS-136/TDMA),

• Integrated Digital Enhanced Network (iDEN).

• Cell phone = Mobile phone

• Cell - Radio frequencies = limited, shared resource.

• Achieve both coverage and capacity for their subscribers

• Cell site range: ~ ½ mile, (Rural areas ~5 miles)

• Satellite phones

2. Mobile networking system concept – Structure (2/2)• A network of radio base stations forming the base station subsystem.• The core circuit switched network for handling voice calls and text• A packet switched network for handling mobile data• The public switched telephone network to connect subscribers to the wider

telephony network• This network is the foundation of the GSM system network. There are many

functions that are performed by this network in order to make sure customers get the desired service including mobility management, registration, call set up, and handover.• Any phone connects to the network via an RBS (Radio Base Station) at a

corner of the corresponding cell which in turn connects to the Mobile switching center (MSC). The MSC provides a connection to the public switched telephone network (PSTN). The link from a phone to the RBS is called an uplink while the other way is termed downlink.• Radio channels effectively use the transmission medium through the use of

the following multiplexing & access schemes: frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (CDMA), and space division multiple access (SDMA).

3. Case: Yahoo!HK (1/2)Working at Yahoo!HK• Enjoy free

smartphone• Can choose

any kind of smartphone and Yahoo!HK is responsible for the bill

3. Case: Yahoo!HK (2/2)•Why Yahoo!HK is offer smartphones to employee?•Yahoo!HK is developing the Mobile Platform•Experience as an end user in order to know more what they really need•24 hours on call (No excuse not receiving calls/emails)

4. Transformation from 1G to 4G (1/6)

•1st Generation•AMPS (Advanced Mobile Phone Service) •analog signals + dynamically assigned channels

Limitations: •no support for encryption, •poor sound quality • inefficient use of the spectrum

• 2nd Generation• Referred as PCS (Personal Communication Systems)• 2G technologies can be divided into:• Time Division Multiple Access (TDMA)-based• Code Division Multiple Access (CDMA)-based

The main 2G standards:•GSM(Global System for Mobile Communications)• CDMA•NA-TDMA(North American TDMA)•D-AMPS(digital AMPS)

4. Transformation from 1G to 4G(3/6)

•2.5th Generation2G-systems implemented a packet-switched domain + circuit-switched domain

2.5G technologies:-High Speed circuit switched data (HSCSD)-General packet Radio Service (GPRS), -Enhanced Data Rate for GSM Evolution (EDGE)

used for WAP, SMS & MMS services, Internet access

•3rd GenerationMain technologies:•UMTS (Universal Mobile Telecommunications System) – also called Wideband CDMA• In the US, CDMA2000• In China Time Division-Synchronous Code Division Multiple Access (TD-SCDMA).

•4th Generation• two technologies are supposed to be the based features of 4G:•WiMAXWiMAX stands for Worldwide Interoperability of Microwave Access previously worked as fixed wireless facility under the 802.16e band. Now the modified standard 802.16m has been developed with the properties of speed, wide spectrum, and increase band.

•LTE Advanced• IMT-Advanced standard, formally submitted by the 3GPP organization to • target is to reach and surpass the ITU requirements.•an enhancement to LTE.• improvement on the existing LTE network

5. Advantages of Cellular Networks (1/1)

flexible enough to use the features and functions of almost all public and private networks

increased capacityreduced power uselarger coverage areareduced interference from other signals

6. Limitations Of Cellular Networks (1/1)

oWireless Access MediumoLimited BandwidthoSystem ComplexityoLimited PoweroLimited Processing PoweroRelatively Unreliable Network Connection

8. Future expectation (1/6)

WiMAXLTE

8. Future expectation (2/6)

8. Future expectation - 5G Technology (3/6)•5th Generation Mobile technology•Use cell phones within very high bandwidth•All type of advanced features which makes 5G mobile technology most powerful and in huge demand in near future

8. Future expectation - Feature of 5G (4/6)•High resolution for crazy cell phone user and bi-directional large bandwidth shaping.•The advanced billing interfaces more attractive and effective.•Providing subscriber supervision tools for fast action.•Avoid error•Large broadcasting of data in Gigabit which supporting almost 65,000 connections.•Transporter class gateway with unparalleled consistency.

8. Future expectation - Feature of 5G (5/6)• The traffic statistics more accurate.• Remote management a user can get better and fast solution.• Remote diagnostics also a great feature of 5G technology.

• Providing up to 25 Mbps connectivity speed.• Support virtual private network.• All delivery service out of business prospect• The uploading and downloading speed of 5G technology touching the peak.•Offering enhanced and available connectivity just about the world

8. Future expectation - Feature of 5G (5/6)•Application to Yahoo!HK•Main purpose: Interconnection between employers and employees

•Application to general public:•Main purpose: Whatsapp

• If they could have used a faster, safer networking system, things would have gone even better.

THE END

Q&A TIME

ISEM 3410 Telecommunications and Networking Group 4 10000593 Chan Chun Yin 11002417 Choi Man Hei...

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