Subject: Mobile Computing

Difficulty: Medium

Marks: 4 Marks

Applications:

1. Mobility - The ability to maintain constant voice and data communications while on the move.
2. Immediacy - Allows subscribers to obtain connectivity when needed, regardless of location and without a lengthy login session.
3. Localization - Allows subscribers to obtain information relevant to their current location.
4. Still images such as photographs, pictures, postcards, greeting cards and presentations, static web pages can be sent and received over the mobile network.

Limitations:

1. Limited Cell Capacity for All Users: GPRS does impact a network's existing cell capacity. There are only limited radio resources that can be deployed for different uses
2. Speeds Much Lower in Reality
3. Achieving the theoretical maximum GPRS data transmission speed of 172.2 kbps would require a single user taking over all eight timeslots without any error protection.

Transit Delays GPRS packets are sent in all different directions to reach the same destination. This opens up the potential for one or some of those packets to be lost or corrupted during the data transmission over the radio link.