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This paper presents a study on transmission opportunity (TXOP) mechanism of the new MAC protocol described in the IEEE 802.11e supplement to the standard. A simple algorithm for dynamic configuration of TXOP limit is proposed for the contention channel access mode, called enhanced distributed channel access (EDCA). The proposed scheme aims to define dynamic rules for TXOP duration adjustment in multimode...
The efficient delivery of multimedia over wireless LANs is strongly dependent on the requirements imposed by different traffics contending the channel resources. Mechanisms for supporting QoS are needed, especially when voice and video applications come into play with stringent constraints in terms of delay and throughput. In this paper we evaluate, through simulations, the benefits derived from the...
Mobile ad hoc networks (MANETs) are nowadays being used much more than some years ago. One of the major reasons is the increasing number of devices that have risen lately capable of forming part of such networks. This situation makes feasible the development of new services. Especially, video-streaming is one of the most successful services demanded by the customers. In this paper we propose a QoS-aware...
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