Download presentation
Presentation is loading. Please wait.
Published byRhoda Walton Modified over 9 years ago
2
Why do we need packet data ? In Circuit Switched Data, the data rate and delay can be guaranteed and therefore is ideal for real time services such as video transmission. In Circuit Switched Data, the data rate and delay can be guaranteed and therefore is ideal for real time services such as video transmission. GPRS on the other hand is more suited to bursty traffic such as web browsing and telemetry and the provision of some new network elements is necessary to provide these services. GPRS on the other hand is more suited to bursty traffic such as web browsing and telemetry and the provision of some new network elements is necessary to provide these services. When compared to Circuit Switched Data, GPRS has a number of advantages when it comes to Internet connections and links with other packet switched networks. When compared to Circuit Switched Data, GPRS has a number of advantages when it comes to Internet connections and links with other packet switched networks.
3
Packet Data If a user use a circuit data and want to be always on-line, he needs to monopolize a radio channel ( and pay for it ! ), even when he does not send any data If a user use a circuit data and want to be always on-line, he needs to monopolize a radio channel ( and pay for it ! ), even when he does not send any data With packet data, a user can stay connected ( always on-line ) and pay only for the amount of data that he send/receive With packet data, a user can stay connected ( always on-line ) and pay only for the amount of data that he send/receive
4
GPRS An Upgrade to existing networks An Upgrade to existing networks An integral part of EDGE and WCDMA An integral part of EDGE and WCDMA Radio Access Network GSM Circuit Switched Network PSTN ( Public Switched Telephone Network ) Internet / Intranets GPRS Packet Switched Add-on
5
EDGE : Conclusion ? Faster than GPRS Faster than GPRS Much Cheaper than 3G Much Cheaper than 3G
6
Quality of Service Classes Conversational Conversational –Low delay, preserve time relation between packets –Voice, highly intensive games Streaming Streaming –preserve time relation between packets, delay not critical –Streaming media Interactive Interactive –Request response pattern, preserve data integrity –Web browsing Background Background –Non-time critical data, preserve data integrity –Background synchronization, download …etc
7
Evolution : different radio access on the same core network GSM/GPRS BTS EDGE/GPRS BTS WCDMA BTS RNC BSC SGSN MSC GGSN PSTN Packet Data Network
8
IMT-2000 recommendations Quality of service comparable to fixed voice networks Quality of service comparable to fixed voice networks Bit rates up to 2 Mbps Bit rates up to 2 Mbps Variety of terminals Variety of terminals Flexible architecture to add additional applications Flexible architecture to add additional applications
10
Bluetooth Short range radio technology that enables many different shapes and functionalities from different vendors to communicate. Short range radio technology that enables many different shapes and functionalities from different vendors to communicate. The technology operates in 2.4 GHz frequency. The technology operates in 2.4 GHz frequency. It is designed to be small and power efficient and is expected to be included in a huge variety of devices ( mobile phone, PDA, computer …etc ) It is designed to be small and power efficient and is expected to be included in a huge variety of devices ( mobile phone, PDA, computer …etc )
11
Requirements for Bluetooth : Low power Low power Low cost Low cost Small footprint Small footprint Speech and data transmission Speech and data transmission It has to work worldwide It has to work worldwide
12
Directional vs Omni Directional
13
Main features Omni directional Omni directional Not limited to point to point connection Not limited to point to point connection Small LAN can be set up Small LAN can be set up Can serve as short range Internet bridge Can serve as short range Internet bridge Short radio ( 10 m – 100 m, depend on power ) Short radio ( 10 m – 100 m, depend on power ) Bit rate ( 433 kbps for symmetric transfer and 722 kbps for asynchronous transfer ) Bit rate ( 433 kbps for symmetric transfer and 722 kbps for asynchronous transfer )
14
Available Bit Rates
15
Bluetooth networking profile Piconet ( up to 8 units ) Piconet ( up to 8 units ) Scatternet Scatternet Bluetooth has a maximum of 79 frequencies. Bluetooth has a maximum of 79 frequencies. Piconet
16
Jasa Nilai Tambah GSM
17
The 5 M’s Movement : escaping the fixed place Movement : escaping the fixed place Moment : expanding the concept of time Moment : expanding the concept of time Me : extending myself and my community Me : extending myself and my community Money : expanding financial resources Money : expanding financial resources Machine : empowering gadgets Machine : empowering gadgets
18
Movement : escaping the fixed place Mobility Mobility Locality Locality Globality Globality Home Base Home Base Positioning Positioning
19
Mobility E.g. Car driver looking for the nearest hotel E.g. Car driver looking for the nearest hotel The service keep track of where you are and dynamically offer you the most appropriate service or information as you move The service keep track of where you are and dynamically offer you the most appropriate service or information as you move The service should move beyond any location and its information automatically as you drive on past it The service should move beyond any location and its information automatically as you drive on past it
20
Locality The service provide specific local information. The service provide specific local information. E.g. Weather, local entertainment …etc E.g. Weather, local entertainment …etc
21
Globality Some services need to provide the same information worldwide Some services need to provide the same information worldwide E.g. CNN News, Wall Street Financial News …etc E.g. CNN News, Wall Street Financial News …etc
22
Home Base If the service knows where your home base interest is, it can provide the home-town information If the service knows where your home base interest is, it can provide the home-town information
23
Positioning Identifying the physical presence of mobile phones Identifying the physical presence of mobile phones
24
Moment – expanding the concept of time Plan Plan Postpone Postpone Fill time Fill time Catch Up Catch Up Multi-task Multi-task Real-Time Real-Time
25
Moment Planning is critical to efficient use of time. E.g. see what the team members are doing to try to find a common time for a meeting Planning is critical to efficient use of time. E.g. see what the team members are doing to try to find a common time for a meeting Postpone : Making last minutes change or last minute decision. Postpone : Making last minutes change or last minute decision. Filling time : doing things with sudden idle time, e.g. reading e-mail while waiting at airport, read the news in the taxi Filling time : doing things with sudden idle time, e.g. reading e-mail while waiting at airport, read the news in the taxi Catching up : trying to recover lost time, e.g. reading yesterday’s newspaper Catching up : trying to recover lost time, e.g. reading yesterday’s newspaper Multi-tasking : to do multiple things at the same time Multi-tasking : to do multiple things at the same time Real-time : delivering services when they occur ( stock price information ) Real-time : delivering services when they occur ( stock price information )
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.