Introduction Mobile Computing is an umbrella term used to describe technologies that enable people to access network services anyplace, anytime, and anywhere. Ubiquitous computing and nomadic computing are synonymous with mobile computing. Information access via a mobile device is plagued by low available bandwidth, poor connection maintenance, poor security, and addressing problems. Unlike their wired counterparts, design of software for mobile devices must consider resource limitation, battery power and display size.
First there are services designed to overcome common restrictions of mobile computing, which arise mainly from the slowness, insecurity and instability of wireless or analogous connection lines utilized by the mobile user. These services are called common mobility services (SMS). Examples are connection management, caching or encryption services. The second group of services handles the management and administration of mobile users moving around and connecting their portables to networks at different places.
These mobility management services (MS) include tasks such as the authentication of users, accounting and billing issues or profiling of the users’ habits. The tasks necessary to adapt certain existing applications to mobile usage are implemented by high level services, which are called special mobility services(SMS). Special mobility services adapt existing services to the mobile conditions. For example to allow remote database access over a wireless connection line one has to take special care of possible frequent connection losses especially in the context of the state of the database.
Viewing services as distinct building blocks, we are able to sketch an architecture for a “mobility services enhanced system”. *Frequencies of Mobile Computing Bluetooth is an industrial specification for wireless personal area networks (PANS). Bluetooth provides a way to connect and exchange information between devices such as mobile phones, laptops, PC’s, printers, digital cameras, and video game consoles over a secure, globally unlicensed snort-range array Truculence. I n Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group.
Bluetooth technology relies on two things, a radio frequency technology and the protocol software enabling it to transmit data to other devices. Bluetooth-capable devices can transmit data to other devices not within the line of sight of the user. It also enables different devices to communicate using certain rules such as the amount of data that will be sent, the type of communication between the devices and the radio frequency or frequencies this communication will take place.
These protocols ensure that Bluetooth devices experience the least amount of interference room other Bluetooth capable objects while communicating with each other. Smartness are the ideal productivity solution for both voice and data for your mobile workforce. They’ll be able to stay in touch with the people and information that matter most. Access email, instant message, access the Internet, run business applications and more. Communicate your way: Call, email, instant message, or text message, all with one device. 3. 0 Internet Technology and Services 3. POI (Voice Over ‘P) A telephone service that uses the Internet as a global telephone network. Many companies, including Peonage, ex. and AT&T (Calculating), typically offer calling within the country for a fixed fee and a low per-minute charge for international. Broadband Internet access (cable or DSL) is required, and regular house phones plug into an analog telephone adapter (ATA) provided by the company or purchased from a third party. 3. 2 BLOB A blob is a lot like a Journal except it is generally intended to be read by others.
The topics for blobs vary greatly; some being about day to day activities and others taking a more corporate or political slant. There is no defined or widely accepted format and o blobs range from one liners that the author adds every few hours to relatively long, well thought out arguments for or against a topic of interest. 4. 0 Types of network 4. 1 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.