Distributed allocation of time slots for real-time traffic in a wireless multi-hop network1
نویسندگان
چکیده
This paper examines a new mechanism for distributed resource reservation that offers support for applications with QoS requirements in a wireless multi-hop network. This mechanism is based on IEEE 802.11 DCF and includes end-to-end reservations of time slots and distribution of reservation information to mobile nodes unaware of the reservation, piggy-backed on existing medium access control messages. We investigate average packet delay, packet delay distribution, packet loss rates and throughput of our scheme compared to IEEE 802.11 DCF using simulations. Our scheme results in a better support for real-time transmissions than DCF.
منابع مشابه
ارزیابی سیاستهای زمانبندی در نسل چهارم شبکههای سلولی (LTE)
New generation of wireless networks, LTE and WiMAX, supports many services which consume a lot of resources (such as VOIP, Video Conference, Digital Video, Multimedia streams and online Multi-player Games). Supporting multi-media services in wireless communication systems provide new resource allocation challenges. Because of high loads in downlink, efficient resource allocation is vital in dow...
متن کاملThroughput Maximization for Multi-Slot Data Transmission via Two-Hop DF SWIPT-Based UAV System
In this paper, an unmanned aerial vehicle (UAV) assisted cooperative communication system is studied, wherein a source transmits information to the destination through an energy harvesting decode-and-forward UAV. It is assumed that the UAV can freely move in between the source-destination pair to set up line of sight communications with the both nodes. Since the battery of the UAV may be limite...
متن کاملQoS in distributed wireless 802.11-based multi-hop networks
Wireless Local Area Networks (WLAN)s are today common for access to Internet; well-known and used is IEEE 802.11 standardized technology. Some drawbacks of the standardized distributed medium access scheme, Distributed Coordination Function (DCF) has resulted in considerations made to extend the DCF from single-hop communications to multi-hop. Multihopping has the potential to reduce energy con...
متن کاملA Hidden Node Aware Network Allocation Vector Management System for Multi-hop Wireless Ad hoc Networks
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...
متن کاملA multi-hop PSO based localization algorithm for wireless sensor networks
A sensor network consists of a large number of sensor nodes that are distributed in a large geographic environment to collect data. Localization is one of the key issues in wireless sensor network researches because it is important to determine the location of an event. On the other side, finding the location of a wireless sensor node by the Global Positioning System (GPS) is not appropriate du...
متن کامل