Introduction to Mobile computing:
Mobile computing afects entire spectrum of issues
_ First of all it is distributed + mobile computing.
_ Distributed computing as we know works on static wired network.
_ Node may initiate computation some where and migrate to another place.
_ So two major problem that arise due to mobility Searching for the current location of a mobile node.
To impose communication structure among
_ Physical location of mobile is not the network address, so how do we route the message to a mobile host.
_ This question is being addressed by two different communitie that are Internet community and cellular community
_ Work of Internet community involves Mobile IP Aims at the standards that may extend IP in order to deal with location of Mobile host. Mobile IP work assumes connection-less, packet switching scenario.
It provides services require addressing of following new issues Interoperability and adaptability to n/w environments ranging from high to low bandwidths and infra red communication links Energy eficient data access.
Support for mobility and disconnection.
Support for active services, triggers (even notification), periodic data delivery.
Cellular community’s efort based on location
management of cellular phone users.
_ It deals with connection oriented communication, since it is motivated by the issues in telephony in call-setup.
_ Main problem in mobility management is to _nd an appropriate trade-o_ between searching and informing.
_ Searching is performed when address of the message recipient can’t known at least not known precisely.
_ Informing is a responsibility of the mobile unit when it migrates.
_ Extreme situations can be
1. Mobile unit never informs works for units receiving few of the messages and for units which don’t move during receiving.
2. Always informs works well for units receiving messages frequently.
The Ad hoc network routing is the ultimate challenge.
This Ad hoc networks arise in rapid deployment scenarios:
1. Emergency disaster management.
2. Military operation in remote sites.
3. Business meeting venues without infrastructure
_ Many routing algorithms are designed: AODV,
DSR, DSDV, TORA, FSR, LAR, ABR, etc.
The Future of Mobile Computing :
Few concepts dominate the conversation in higher education today like
mobility. Almost every college student uses the mobile device for the both academic reasons and personal . Given this environment, institutions are evaluating how mobile technologies can enhance classroom activities and learning as well as the administrative functions.
An enormous array of mobile devices is making its way to college campuses. The fast-changing world of technology and applications makes a case for device-agnostic mobile computing strategies, though the functionality of native apps can be compelling.
To promote the most innovative uses of mobile technologies, institutions must
address challenges related to the security,IT support, faculty concerns, and the accessibility. With tight budgets in the higher education, the collaboration with students and nonprofits can help universities and colleges advance a mobile computing agenda.
Q1: What are the Several factors impede implementation of the
mobile technologies in the higher education?
Ans: Development resources, Faculty attitudes, IT support, Cost and accessibility.
2: Describe about despite budget shortages, the colleges and the universities may advance their mobile computing goals through collaborative activities?
Ans: Although funds may be limited for mobile initiatives, opportunities exist for institutions to collaborate on and off campus. For example, some organizations will loan mobile devices to universities for the tharty days. Grants are another option. Joanne Kossuth mentioned the grant program focused on the mobile apps and regional public transportation. It also is possible to leverage the resources on the campus. Rather than assigning students the abstract exercises, ask them for engaging in real development work that will benefit the school.
Q3: What are the categories of information dissemination ?
Ans: 1. Wide area services such as stock quotes on
2. Macro services such weather on a regional
3. Micro services traffic condition in an immediate
Q4:What are the requirements of mobile computing?
Ans: Mobile computing requires wireless network to the support outdoor mobility and hando_ from one n/w to the next at a pedestrian or vehicular speed.
Q5: What is the Successful mobile computing strategies link with institutional goals and meet constituent needs?
Ans: Mobile computing strategies are most effective when they are very tied to the institutional goals including those related for teaching and learning, admissions, fundraising, and emergency planning and the leverage existing, available resources. When developing mobile computing strategies, it is essential that universities and colleges have an ongoing to the conversation with constituents about their mobile technology needs. A strategy that supports multiple devices is also a necessary.