many performance evaluations for ieee 802.11distributed coordination function (dcf) have been previouslyreported in the literature. some of them have clearly indicatedthat 802.11 mac protocol has poor performance in multi-hopwireless ad hoc networks due to exposed and hidden nodeproblems. although rts/cts transmission scheme mitigatesthese phenomena, it has not been successful in thoroughlyomit...

in MBS Dietmar Petras Dept. of Communication Networks, Aachen Univ. of Technology EMail: [email protected], WWW: http://www.dfv.rwth-aachen.de Abstract: This paper presents investigations on a medium access control protocol enabling transparent ATM access to mobile users. The Dynamic Slot Assignment protocol has been developed. The results of performance evaluations and improvements of ...

The oncoming Internet-of-things (IoT) applications and smart machine-to-machine (M2M) communication lead to an enormous increase in network traffic. To meet the escalating demands of these time-critical applications, we need a hybrid optical-wireless network, for which radio-over-fiber (RoF) technology is promising candidate. These networks support stringent delay requirements above large numbe...

extensive researches on wireless sensor networks (wsns) have been performed and many techniques have been developed for the data link (mac) layer. most of them assume single-channel mac protocols. in the usual dense deployment of the sensor networks, single-channel mac protocols may be deficient because of radio collisions and limited bandwidth. hence, using multiple channels can significantly ...