Results 161 to 170 of about 27,992 (204)

On Load Regulated CSMA

2008 The 28th International Conference on Distributed Computing Systems Workshops, 2008
In this paper, we derive throughput of a threshold-based transmission policy, namely load-regulated CSMA, taking into account the propagation delay of the medium and the offered load at different probability of the fading channel. In case of the saturated load regulated CSMA, a trivial relationship between deterministic offered load to the channel at a
Manzur Ashraf, Aruna Jayasuriya, Sylvie Perreau   +2 more
openaire   +1 more source

CSMA/CA through put analysis in hybrid CSMA/CA and TDMA networks

Proceedings of the 2016 International Conference on Intelligent Information Processing, 2016
Recently, Wi-Fi has become the mainstream technology to access the Internet. There are many researches applying Time Division Multiple Access (TDMA) to Wi-Fi network in order to provide better performance for different applications. As a result, Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) users are interfered when coexisting with ...
Jiaqi Cui, Jun Xu, Chengcheng Guo, Yongqing Ling   +3 more
openaire   +1 more source

Spatially divided channel scheme using sectored antennas for CSMA/CA "directional CSMA/CA"

11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), 2002
One of the most spotlighted medium access control (MAC) scheme is carrier sense multiple access with collision avoidance (CSMA/CA). This scheme, adopted by the IEEE 802.11 standard, avoids packet collision by virtual carrier sensing considered for the "hidden terminal" problem, gathering physical channel sensing. Therefore, it attains higher throughput
K. Kobayashi, M. Nakagawa
openaire   +1 more source

Tuning Fast Link Adaptation Algorithms for CSMA/CA- and CSMA/E2CA-Based WLANs

2012 21st International Conference on Computer Communications and Networks (ICCCN), 2012
Abstract-The performance of fast link adaptation (FLA)algorithms in wireless local area networks (WLANs) is affected by the delay of the modulation and coding scheme (MCS) feedback information. In this paper, a novel FLA strategy is shown to be able to cope with expired MCS information.
Gabriel Martorell, Felip Riera-Palou, Guillem Femenias   +2 more
openaire   +1 more source

Comparing slotted and continuous CSMA

ACM SIGMETRICS Performance Evaluation Review, 2011
Carrier-Sense Multiple-Access (CSMA) protocols form a popular class of random-access schemes for regulating node activity in wireless networks. We compare the continuous and the time-slotted versions of this protocol in the saturated regime, and show that continuous CSMA has higher aggregate throughput than the slotted protocol, but this comes at the ...
Shneer, V., Ven, van de, P.M.
openaire   +1 more source

Performability evaluation of CSMA/CD and CSMA/DCR protocols under transient fault conditions

IEEE Transactions on Reliability, 1993
The authors present the results of an evaluation for the CSMA/CD (carrier sense multiple access with collision detection) protocol and a deterministic protocol under workloads anticipated in an industrial environment. Stochastic activity networks are used as the model type, and simulation is used as the solution method.
Prodromides, K. H., Sanders, W. H.
openaire   +1 more source

Queueing analysis of CSMA protocols

1986 25th IEEE Conference on Decision and Control, 1986
It is known that random multiple access protocols, such as CSMA, CSMA/CD, etc, present instability problems. Several mechanisms may be used to overcome this difficulty. For example, in Ethernet, the most well-known implementation of the CSMA/CD protocol, a control scheme is imposed on the retransmission mechanism (exponential backoff). In this paper we
E. Protonotarios, E. Sykas
openaire   +1 more source

Erasure correction-based CSMA/CA

Annals of Telecommunications, 2017
It is well known that the performance of carrier sense multiple access with collision avoidance (CSMA/CA) is poor when the number of users increases, because of collisions. In this paper, we consider a modified version of CSMA/CA based on erasure codes at the packet level, which significantly reduces the complexity of the decoding and does not require ...
Tortelier, Patrick, Le Ruyet, Didier
openaire   +2 more sources

RV-CSMA/CA: Relative Velocity-CSMA/CA Mechanism for Inter-vehicle Network

2008
The relative velocity between vehicles plays an important role in inter-vehicle network that has to support high mobility. The communication efficiency of the network is affected considerably by a rapid change of network topology depending on the relative velocity.
SungDae Jung, Xu Shenglei, SangSun Lee
openaire   +1 more source

Power Control in Multihop CSMA

2006 International Symposium on a World of Wireless, Mobile and Multimedia Networks(WoWMoM'06), 2006
This paper aims at improving the power efficiency of the CSMA/CA protocol for transmission of multimedia information over multihop wireless channels. Using a distance dependent propagation model, we present a power control scheme, which is based on the receiver sensitivity adjustment mechanism.
null Bo Yan, H. Gharavi
openaire   +1 more source