Results 81 to 90 of about 14,038 (206)

CSMA/ECA in Non-Saturation

open access: yesCoRR, 2013
During the past month we have been trying to understand both the behavior of CSMA/ECA and how our simulator works. In this report I try to asses some of those doubts and provide a groundwork for discussion of past and new ideas for further develop the MAC protocol.
openaire   +2 more sources

Hybrid Slotted-CSMA/CA-TDMA for Efficient Massive Registration of IoT Devices

open access: yesIEEE Access, 2018
Recently, the Wi-Fi alliance announced a new Wi-Fi standard known as IEEE 802.11ah (or Wi-Fi HaLow) to efficiently support Internet of Things (IoT) applications.
Nurullah Shahin   +2 more
doaj   +1 more source

Performance analysis on a new MAC DT-CSMA

open access: yes, 2011
TDMA has been resumed for industrial wireless sensor network (IWSN) like WirelessHART and ISA 100.11a recently, because TDMA is suitable for periodic traffic which is predictable to pre-assign.
Dong Yang   +5 more
core   +1 more source

CSMA/CCA: A Modified CSMA/CA Protocol Mitigating the Fairness Problem for IEEE 802.11 DCF

open access: yes, 2008
Carrier sense multiple access with collision avoidance (CSMA/CA) has been adopted by the IEEE 802.11 standards for wireless local area networks (WLANs). Using a distributed coordination function (DCF), the CSMA/CA protocol reduces collisions and improves
Xin Wang, Georgios B. Giannakis
core  

Correlations of Hip Muscle Composition with Age and Body Mass Index in Middle-aged and Elderly Patients with Hip Fracture

open access: yesCT Lilun yu yingyong yanjiu
Objective: To investigate the correlations of hip muscle composition with age and body mass index (BMI) in middle-aged and elderly patients with hip fracture.
Jianjun LI   +4 more
doaj   +1 more source

Medium Access Control Layer for Internet of Things Edge-Side Network Using Carrier-Sense Multiple Access Protocol

open access: yesEngineering Proceedings
The Internet of Things (IoT) has recently received a great deal of research interest due to its broad range of applications. One of the important layers in IoT applications is known as edge computing where resource-constrained devices at the edge form a ...
Selahattin Kosunalp, Sami Acik
doaj   +1 more source

Comparing slotted and continuous CSMA: throughputs and fairness

open access: yes, 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 ...
Shneer, V.   +5 more
core   +1 more source

ADNP-CSMA Random Multiple Access protocol application with the function of monitoring in Ad Hoc network

open access: yesMATEC Web of Conferences, 2016
In Ad Hoc networks,the net work of mobile nodes exchange information with their wireless transceiver equipment,the network throughput is in increased,compared to other such multiple hops network.Moreover along with the rapid development of modern ...
Zhan Gang   +5 more
doaj   +1 more source

Perfomance Evaluation of the CSMA and CSMA-CD Protocols [PDF]

open access: yes
本論文は,nonpersistent CSMA及びCSMA-CDの動特性について考察を行ったものである.CSMA-CDの動特性の解析は,従来,チャネルの検知がパケットの発生(又はレディとなった)時点でなされるという条件の下で,行われている.しかし,チャネルの時間軸がスロット化された状況においては,その次の小スロットの開始時点で,チャネルの検知を行う方が自然且つ実際的であり,又特性が良くなると考えられる.本論文では,まず,検知時点に関するこれら二つの条件の下で,slotted CSMA ...
石橋, 豊   +5 more
core   +1 more source

Immunomodulatory exosomes loaded chitosan methacryloyl hydrogel combined with pro-chondrogenic microspheres for promoting articular cartilage regeneration

open access: yesMaterials & Design
A diverse range of biological materials has been widely used for the management of injuries to joint cartilage. However, suboptimal outcomes in cartilage repair are often due to inappropriate host immune responses and inadequate microenvironments for ...
Ruoyu Liang   +8 more
doaj   +1 more source

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