Weiser, M., "Some Computer Science Issues Related to Ubiquitous Computing," Comm. ACM, V 36, N 7, (July 1993), V 36, N 7, (July 1993), pp. 75-85.  Home/Search   Document Not in Database   Summary   ACM   TOC   Related Articles

....bandwidth between the wireless node and the network, and a general desire for as high a bandwidth as possible, possibly approaching Ethernet speeds. Under this definition, wireless email is a particularly primitive form of wireless computing. Ubiquitous computing, as defined by Weiser [Weiser 91, Weiser 93] envisions an environment in which computing devices are so inexpensive and so readily available that there are hundreds or even thousands in a typical office. With such a large number of devices, any attempt to interconnect them with traditional wired networks is impossible, and so wireless ....

....18, 1995 9 same time. This is the so called hidden terminal problem: a terminal on one side of a cell may not be able to detect that it is colliding with a terminal at the opposite end of the cell. A proposed solution is the MACA media access protocol proposed by Karn and modified by Xerox [Weiser 93] The protocol contains two special messages, Request to Send N Bytes and Clear to Send N Bytes. This indicates to the listening terminals how long they should remain silent. Collisions are detected by timeouts, and these should only occur during the actual Request to Send commands. Xerox s ....

Weiser, M., "Some Computer Science Issues Related to Ubiquitous Computing," Comm. ACM, V 36, N 7, (July 1993), V 36, N 7, (July 1993), pp. 75-85.

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC