I/C NUMBER : 950225-01-6337


0 Mobile Computing. radio systems and lasers to transmit between permanent objects such as buildings and towers.0 Introduction The latest development in networks and communication means the improvement in networks and communication services and products which really useful for IT user. PDA .1Definition. 2.1. Mobile computing implies wireless transmission. services & frequencies of Mobile Computing.2 Specification. but wireless transmission does not necessarily imply mobile computing. 2. 2. Using a computing device while in transit. It is olso much better from the previous contains. Fixed wireless applications use satellites.

higher delay 8. •Low power machines •enable anywhere •low resources machines. 4.Low resources machines 6. SERVICES 1.Low bandwith.Electronic mail/paging •games FREQUENCIES •EGSM 900/1800/1900 •UMTS 2100 •none . 5.High bandwith variability. 4. 3.Emergency services (messaging & calling) 2. 2.Enable new application.enable anywhere/anytime connentivity.Taxi/truck dispatch.need proximity 7.Collection /control. 5.SPECIFICATION 1.Low power machines.Credit card verification. 3.disconnected operation 9. 10.Hidden terminal.stock information.

Internet Technology And services 3. PAN can be used for communication among the personal devices themselves (intrapersonal communication). Z-Wave and ZigBee. Other terms frequently encountered and synonymous with VoIP are IP telephony. broadband telephony. A wireless personal area network (WPAN) can also be made possible with network technologies such as IrDA. voice over broadband (VoBB). Bluetooth. The devices may or may not belong to the person in question. and broadband phone.2 Blog A blog (a contraction of the term weblog) is a type of website. The reach of a PAN is typically a few meters. UWB. . "Blog" can also be used as a verb. descriptions of events. usually maintained by an individual with regular entries of commentary. or other material such as graphics or video. Internet telephony. Personal area networks may be wired with computer buses such as USB and FireWire. 4.1 Personal Area Networking (PAN) A personal area network (PAN) is a computer network used for communication among computer devices (including telephones and personal digital assistants) close to one person.0 Types Of Network 4. or for connecting to a higher level network and the Internet (an uplink). meaning to maintain or add content to a blog.1 Voice Over Internet Protocol ( VoIP) Voice over Internet Protocol (VoIP) is a general term for a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packetswitched networks. Entries are commonly displayed in reverse-chronological order. 3.

4. such as sharing of data and access to network resources. to provide remote offices or traveling users access to a central organizational network. A VPN user typically experiences the central network in a manner that is identical to being connected directly to the central network. printers.2 virtual private network (VPN) virtual private network (VPN) is a network that uses primarily public telecommunication infrastructure. and often secure data with encryption technologies to prevent disclosure of private information to unauthorized parties.3 Wireless LAN (WLAN) A wireless LAN (WLAN) is a wireless local area network that links two or more computers or devices using spread-spectrum or OFDM modulation technology based to enable communication between devices in a limited area. websites. WiMAX brings with it the ability to transmit over far greater distances and to handle much more data. . databases. This gives users the mobility to move around within a broad coverage area and still be connected to the network 4. VPNs may serve any network functionality that is found on any network. Similar to WiFi. such as the Internet. VPNs typically require remote users of the network to be authenticated. VPN technology via the public Internet has replaced the need to requisition and maintain expensive dedicated leased-line telecommunication circuits once typical in wide-area network installations.4. etc.4 WIMAX Worldwide Interoperability for Microwave Access (WiMAX) is a communications technology that uses radio spectrum to transmit tens of megabits per second in bandwidth between digital devices such as laptop computers.

asp .com/question/index?qid=20070629052817AASZjbY • • • •http://www.htm • •http://en.0 References • •http://en.wikipedia. Conclusion The latest development in networks and communication brings more useful to IT user which can makes lifes way easier in networking and communicate.5.about.t=mobile+computig&i=4 7137.