Relevant bibliographies by topics / Carrier sense multiple access (CSMA) protocol

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Academic literature on the topic 'Carrier sense multiple access (CSMA) protocol'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Carrier sense multiple access (CSMA) protocol"

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Kaur, Kulbir, and Kiran Kumar. "Slotted Carrier Sense Multiple Access Protocols- A Review." INTERNATIONAL JOURNAL OF MANAGEMENT & INFORMATION TECHNOLOGY 7, no. 2 (November 30, 2013): 1067–73. http://dx.doi.org/10.24297/ijmit.v7i2.3258.

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CSMA/CA protocols rely on the random deferment of packet transmissions. Like most other protocols, CSMA/CA was designed with the assumption that the nodes would play by the rules. This is important the nodes themselves control deferment. However, with the higher programmability of the network adapters, the temptation to tamper with the software or firmware is likely to grow; in this way, a user could obtain a much larger share of the available bandwidth at the expenseof other users. This paper focuses on slotted CSMA/CA and tries to find out its limitations of the slotted CSMA/CA protocols.
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Kim, Dong Min, and Seong-Lyun Kim. "CSNOMA: Carrier Sense Non-Orthogonal Multiple Access." Sensors 20, no. 18 (September 4, 2020): 5024. http://dx.doi.org/10.3390/s20185024.

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In this paper, we investigate the possibility of the cross-layer design of a distributed random access scheme with considering physical (PHY) and multiple access control (MAC) layers, which utilizes the interference cancellation technique. In this regard, we propose a new multiple access protocol, named carrier sense non-orthogonal multiple access (CSNOMA). We consider the spatially randomly distributed interferers to realistically capture the effect of interference. The proposed protocol shows better area spectral efficiency than carrier sense multiple access (CSMA), as the node density increases. We also present a practical signaling design compatible with IEEE 802.11 DCF mode.
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Colbourn, Charles J., Minghao Cui, Errol L. Lloyd, and Violet R. Syrotiuk. "A carrier sense multiple access protocol with power backoff (CSMA/PB)." Ad Hoc Networks 5, no. 8 (November 2007): 1233–50. http://dx.doi.org/10.1016/j.adhoc.2007.02.017.

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Politis, Anastasios C., and Hristos T. Anastassiu. "Performance Analysis of Resource Sharing During Downlink Multi-User Transmissions in CSMA/ECA Full Duplex WLANs." Transport and Telecommunication Journal 21, no. 1 (February 1, 2020): 61–68. http://dx.doi.org/10.2478/ttj-2020-0005.

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AbstractFull Duplex (FD) wireless communications is considered to be the next big step for future Wireless Local Area Networks (WLANs). Old (IEEE 802.11ac) and new (IEEE 802.11ax) WLAN features are expected to co-exist with FD operation. Some of these features include Downlink Multi-User (DL MU) transmissions at the physical layer while at the Medium Access Control (MAC) layer techniques such as the Transmission Opportunity (TXOP) sharing mechanism facilitates these multiuser transmissions. The traditional Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol is inadequate to support full duplex communications efficiently. A very promising adaptation of CSMA/CA and a powerful candidate as the basic channel access method for future WLANs is the Carrier Sense Multiple Access with Enhanced Collision Avoidance (CSMA/ECA). In this paper, we provide an analytical model to assess the performance of resource sharing techniques in full duplex WLANs operating with the CSMA/ECA protocol. Our analysis is based on Markov chains to obtain an estimate of the achievable throughput of the Quality of Service Access Point (QAP) during DL MU transmissions.
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Liu, Yang, Lei Liu, Jiacheng Liang, Jin Chai, Xuemei Lei, and Hui Zhang. "High-Performance Long Range-Based Medium Access Control Layer Protocol." Electronics 9, no. 8 (August 7, 2020): 1273. http://dx.doi.org/10.3390/electronics9081273.

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Long Range (LoRa) has become one of the most promising physical layer technologies for the Internet of Things (IoT) ecosystem. Although it manifests low-power consumption and long-distance communication, LoRa encounters a large number of collisions in the IoT environment, which severely affects the system’s throughput and delay performance. In this paper, a code division carrier sense multiple access (CD/CSMA) protocol that resolves the traditional channel collision problem and implements multi-channel transmission is proposed for the LoRa medium access control (MAC) layer. To reduce data transmission delay and maximize the throughput of the system, the adaptive p-persistent CSMA protocol divides the channel load into four states and dynamically adjusts the data transmission probability. Then, to reduce channel collisions significantly, the code division multiple access (CDMA) protocol is performed on different channel states. Moreover, the combination of the proposed adaptive p-persistent CSMA protocol and the CDMA successfully reduces the number of data retransmissions and makes LoRa more stable. The simulation results demonstrate that the proposed adaptive p-persistent CD/CSMA protocol can achieve near-optimal and occasionally even better performance than some conventional MAC protocols, especially in a heavy load channel.
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Saravanan, M., Rajeev Sukumaran, M. R. Christhuraj, and T. T. Manikandan. "Stochastic Network Calculus Model for Delay Distribution of Time Division Multiple Access and Carrier Sense Multiple Access in Underwater Acoustic Wireless Communication." Revista Gestão Inovação e Tecnologias 11, no. 4 (July 22, 2021): 2885–901. http://dx.doi.org/10.47059/revistageintec.v11i4.2325.

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Underwater Acoustic wireless communication becomes a popular research area for transmitting and receiving data between the communicators in the ocean environment. High accuracy in data communication can be succeeded by proficient modeling of carrier sense multiple access and time division access. For such innovations, the system has to proceed with an appropriate framework to make constant data traffic and limitations on start to finish data traffic delays. There are two major wireless communication multiple access methods that can be utilized in real-time underwater networks. One of the multiple access schemes is TDMA and another one is CSMA/CA. This paper concentrated on the modeling of TDMA and CSMA/CA also proposes the comparison of delay (end-end) of both multiple access protocols. The results using SNC to obtain delay bounds and are associated with simulation. The results show TDMA has a lesser efficiency than CSMA/CA in the acoustic environment.
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Nguyen, VanDung, Tran Anh Khoa, Thant Zin Oo, Nguyen H. Tran, Choong Seon Hong, and Eui-Nam Huh. "Time Slot Utilization for Efficient Multi-Channel MAC Protocol in VANETs." Sensors 18, no. 9 (September 10, 2018): 3028. http://dx.doi.org/10.3390/s18093028.

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In vehicular ad hoc networks (VANETs), many schemes for a multi-channel media access control (MAC) protocol have been proposed to adapt to dynamically changing vehicle traffic conditions and deliver both safety and non-safety packets. One such scheme is to employ both time-division multiple access (TDMA) and carrier-sense multiple access (CSMA) schemes (called a hybrid TDMA/CSMA scheme) in the control channel (CCH) interval. The scheme can adjust the length of the TDMA period depending on traffic conditions. In this paper, we propose a modified packet transmitted in the TDMA period to reduce transmission overhead under a hybrid TDMA/CSMA multi-channel MAC protocol. Simulation results show that a MAC protocol with a modified packet supports an efficient packet delivery ratio of control packets in the CCH. In addition, we analyze the hybrid TDMA/CSMA multi-channel MAC protocol with the modified packet under saturated throughput conditions on the service channels (SCHs). The analysis results show that the number of neighbors has little effect on the establishment of the number of time slots in TDMA periods and on SCHs under saturated throughput conditions.
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Yang, Xin, Ling Wang, Jian Xie, and Zhaolin Zhang. "Energy Efficiency TDMA/CSMA Hybrid Protocol with Power Control for WSN." Wireless Communications and Mobile Computing 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/4168354.

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Wireless sensors network (WSN) is widely used in the Internet of Things at present. However, limited energy source is a critical problem in the improvement and practical applications of WSN, so it is necessary to improve the energy efficiency. As another important evaluation criterion of transmission performance, throughput should be improved too. To mitigate both of the problems at the same time, by taking the advantages of Time Division Multiple Access (TDMA) and Carrier Sense Multiple Access (CSMA) at the medium access control (MAC) layer of WSN, we propose a hybrid TDMA/CSMA MAC layer protocol. Meanwhile, we design a novel power control scheme to further reduce the energy consumption and optimize the transmission slots. The simulation results demonstrate that the proposed protocol significantly improves the throughput and energy efficiency.
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Dinh, Nga, and Sangsoon Lim. "Analysis of IEEE 802.15.4 Beacon-Enabled MAC Protocol." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1122. http://dx.doi.org/10.11591/ijece.v6i3.9961.

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This paper aims to develop several mathematical models to study medium access control (MAC) protocol in the IEEE 802.15.4 beacon-enabled mode with star topology. In particular, the MAC protocol which employs a slotted carrier-sense multiple access with collision avoidance (CSMA/CA) algorithm used in the contention access period (CAP) of a superframe is modelled. The analysis studies the effectiveness of the CSMA/CA algorithm and provides explicit mathematical expressions for power consumption, access delay, and data frame drop probability. The proposed models precisely follow CSMA/CA algorithm in MAC protocol of beacon-enabled mode and differ from those previously published in the literature as 1) they are derived based on data frame generation rate of end devices, 2) they provide a completed expression for frame access delay, and 3) lowpower states of end devices are considered for power efficiency evaluations. The paper shows how power consumption of end devices is improved on the balance with data frame delay. The validity of the proposed models is confirmed and complemented by extensive simulations.
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Dinh, Nga, and Sangsoon Lim. "Analysis of IEEE 802.15.4 Beacon-Enabled MAC Protocol." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1122. http://dx.doi.org/10.11591/ijece.v6i3.pp1122-1132.

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This paper aims to develop several mathematical models to study medium access control (MAC) protocol in the IEEE 802.15.4 beacon-enabled mode with star topology. In particular, the MAC protocol which employs a slotted carrier-sense multiple access with collision avoidance (CSMA/CA) algorithm used in the contention access period (CAP) of a superframe is modelled. The analysis studies the effectiveness of the CSMA/CA algorithm and provides explicit mathematical expressions for power consumption, access delay, and data frame drop probability. The proposed models precisely follow CSMA/CA algorithm in MAC protocol of beacon-enabled mode and differ from those previously published in the literature as 1) they are derived based on data frame generation rate of end devices, 2) they provide a completed expression for frame access delay, and 3) lowpower states of end devices are considered for power efficiency evaluations. The paper shows how power consumption of end devices is improved on the balance with data frame delay. The validity of the proposed models is confirmed and complemented by extensive simulations.
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Dissertations / Theses on the topic "Carrier sense multiple access (CSMA) protocol"

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Barceló, Vicens Jaume. "Carrier sense multiple acces with enhanced collision avoidance." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7553.

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Aquesta tesi suggereix usar un compte enrere determinista després de les transmissions exitoses en les xarxes d'àrea local sense fils. Com que les estacions que han transmès amb èxit en el seu darrer intent no poden col·lisionar entre elles en el seu proper intent, el nombre de col·lisions es redueix. Per tant, anomenem el protocol accés múltiple per detecció de portadora amb evitament de col·lisions millorat. El protocol es modela i es simula en diversos escenaris per a la seva avaluació. S'arriba a la conclusió de que el protocol proposat ofereix un rendiment igual o major que l'existent.
This thesis suggests the use of a deterministic backoff after successful transmissions in the MAC protocol of WLANs. Since those stations that successfully transmitted in their last collision attempt cannot collide among them in their next transmission attempt, the number of collisions is reduced. Hence, the protocol is called Carrier Sense Multiple Access with Enhanced Collision Avoidance. The protocol is modelled and simulations are used to assess its performance in a variety of scenarios. It is concluded that the proposed protocol performs always equal or better than the legacy one.
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Cawood, Andrew Dudley. "Adaptation, optimisation and simulation of the CSMA/CA protocol for a low earth orbit satellite UHF link." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/1608.

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Van, Staden Teaan. "Investigation into the optimization of low speed communication protocols for narrow band networks." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71884.

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Thesis (MScEng)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: In this thesis, the investigation into the optimization of low speed communication protocols for narrow band networks will be presented. The main focus will be on analysing commonly used low speed communication protocols and investigate an alternative to these protocols to provide an optimized low speed narrow band network that provides better performance at high and low channel utilization. A study of existing low speed communication networks within the field of water supply has been used to identify the most appropriate protocols to be included in the analysis. The analysis of each protocol discussed includes the development of a simulation and theoretical model, with parameters based on those obtained from implemented communication networks focusing on the parameters used within the Namib water supply scheme of NamWater in Namibia. Of the currently implemented contention protocols, the non-persistent Carrier Sense Multiple Access (CSMA) protocol is implemented the most. Current models used for modelling these protocols make use of various assumptions. These models have been expanded to provide a more accurate representation of the non-persistent CSMA model. The Round Robin Polling (RRP) protocol is another well known protocol used within the telemetry industry and has also been modelled as an alternative to the non-persistent CSMA model. The Adaptive Tree Walk (ATW) protocol has been identified as the limited contention protocol to be modelled as a possible alternative to the conventional methods used. A new model has been developed for modelling this protocol by making use of the same strategies and tools used in the modelling of the non-persistent CSMA and RRP protocols. The Simulation modelling has been developed by making use of DESMO-J, an Object Orientated Simulation API based in Java, developed by the Faculty of Informatics at the University of Hamburg. DESMO-J has been chosen as an alternative to the more traditional simulation languages due to its complete documentation, support structures, ease of use and flexibility. All theoretical models have been implemented in Matlab.
AFRIKAANSE OPSOMMING: In hierdie tesis sal die ondersoek na die optimering van laespoed protokolle vir kommunikasie oor nouband netwerke voorgelê word. Die hoof fokus is op die analise van algemene laespoed kommunikasie protokolle en die ondersoek van alternatiewe wat ’n meer optimale laespoed nouband netwerk sal lewer deur beter werkverigting by lae en hoë kanaalverkeer. ’n Studie van praktiese laespoed nouband netwerke in die veld van waterverspreiding word gebruik om die mees algemene protokolle te identifiseer wat in die analise ingesluit moet word. Die analise van die protokolle sluit in teoretiese en simulasie modelle, met parameters soos geidentifiseer uit die studie van ‘n praktiese netwerk, naamlik die Namib waterverspreidingskema van NamWater in Namibië. Die ’Non-persistent Carrier Sense Multiple Access’ en ’Round Robin Polling’ protokolle is geidentifiseer as dié wat meeste geimplementeer word. Die werkverigting van die protokolle is geanaliseer deur gebruik te maak van teoretiese en simulasie modeleringstegnieke. Huidige modelle van die CSMA protokol is gebaseer op sekere aannames. Hierdie aannames word aangepas en verbeter vir implementering van die teoretiese model. Die model word ook verder uitgebrei om beter resultate te lewer oor ’n groter parameterstel. Die ’Adaptive Tree Walk’ protokol is geidentifiseer as ’n moontlike optimale protokol en word gemodeleer en vergelyk teen die CSMA en RRP protokolle se werkverigting. Die simulasiemodelle is ontwikkel deur gebruik te maak van die DESMO-J sagteware, soos ontwikkel as ’n Java program-koppelvlak deur die Universiteit van Hamburg se Fakulteit van Informatika. DESMO-J is gekies as ’n alternatief vir die meer tradisionele simuleringstale omrede goeie dokumentasie, maklike gebruik en buigbaarheid. Alle teoretiese modelering is uitgevoer in Matlab.
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D, Rajaveerappa. "Design and Development of a Hybrid TDMA/CDMA MAC Protocol for Multimedia Wireless Networks." Thesis, Indian Institute of Science, 2004. http://hdl.handle.net/2005/89.

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A wireless local area network (WLAN) provides high bandwidth to users in a limited geographical area. This network faces certain challenges and constraints that are not imposed on their wired counterparts. They are: frequency allocation, interference and reliability, security, power consumption, human safety, mobility, connection to wired LAN,service area, handoff and roaming, dynamic configuration and the throughput. But the wireless medium relies heavily on the features of MAC protocol and the MAC protocol is the core of medium access control for WLANs. The available MAC protocols all have their own merits and demerits. In our research works, we propose a hybrid MAC protocol forWLAN. In the design, we have combined the merits of the TDMA and CDMA systems to improve the throughput of the WLAN in a picocellular environment. We have used the reservation and polling methods of MAC protocols to handle both the low and high data traffics of the mobile users. We have strictly followed the standards specified by IEEE 802.11 for WLANs to implement the designed MAC protocol. We have simulated the hybrid TDMA/CDMA based MAC protocols combined with RAP (Randomly Addressed Polling) for Wireless Local Area Networks. We have developed a closed form mathematical expressions analytically for this protocol. We have also studied the power control aspects in this environment and we derived a closed form mathematical expressions analytically for this power control technique. This hybrid protocol is capable of integrating different types of traffic (like CBR,VBR and ABR services) and compiles with the requirements of next-generation systems.The lower traffic arrival is dealt with the Random Access and the higher traffic arrival is with the Polling methods. This enables us to obtain higher throughput and lowmean delay performance compared to the contention-reservation-based MAC schemes. The protocol offers the ability to integrate different types of services in a flexible way by the use of multiple slots per frame, while CDMA allows multiple users to transmit simultaneously using their own codes. The RAP uses an efficient "back-off" algorithm to improve throughput at higher arrival rates of user's data. The performance is evaluated in terms of throughput, delay, and rejection rate using computer simulation. A detailed simulation is carried out regarding the maximum number of users that each base station can support on a lossy channel. This work has analyzed the desired user's signal quality in a single cell CDMA (Code Division Multiple Access) system in the presence of MAI (Multiple Access Interference). Earlier power control techniques were designed to assure that all signals are received with equal power levels. Since these algorithms are designed for a imperfect control of power, the capacity of the system is reduced for a given BER (Bit-Error Rate). We proposed an EPCM (Efficient Power Control Mechanism) based system capacity which is designed for the reverse link (mobile to base station) considering the path loss, log-normal shadowing and Rayleigh fading. We have simulated the following applications for the further improvement of the performance of the designed MAC protocol:Designed protocol is tested under different traffic conditions. The protocol is tested for multimedia traffic under application oriented QoS requirements. Buffer Management and resource allocation. Call Admission Control (hand-offs, arrival of new users). The adaptability to the variable nature of traffic.The propagation aspects in the wireless medium. The proposed MAC protocol has been simulated and analysed by using C++/MATLAB Programming in IBM/SUN-SOLARIS UNIX environment. The results were plotted using MATLAB software. All the functions of the protocol have been tested by an analysis and also by simulation. Call admission control function of the protocol has been tested by simulation and analysis in a multimedia wireless network topology and from analysis we found that at low traffic the throughput is high and at high traffic the throughput is kept constant at a reasonable high value. The simulation results also justify/ coordinate the analysis results. Dynamic channel allocation function of the protocol was tested and analysed and the coordinated results show that at low traffic, high throughput and at high traffic the throughput is constant. Buffer management function of the protocol simulation shows the results that the packet loss can be controlled to a minimum by adjusting the buffer threshold level at any traffic conditions. Maintenance of data transfer during the hand-offs function was simulated and the results show that the blocked calls are less during low traffic and at high traffic the blocked calls can be kept constant at low value. Thus, the proposed model aimed at having high throughput, high spectral efficiency, low delay, moderate BER and moderate blocking probability. We have considered a pico cell with a maximum of several users and studied the power efficiency of combined channel coding and modulation with perfect power controlled CDMA system. Thus our simulation of the "software radio" has flexibility in choosing the proper channel coders dynamically depending upon the variations of AWGN channel.
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Plönnigs, Jörn. "Control Network Performance Engineering." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1189518885137-19770.

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Beim Entwurf großer Netzwerke der Automation ermöglichen Methoden der Leistungsbewertung den Test und die Dimensionierung eines Netzwerkes bereits vor der Inbetriebnahme und erlauben damit einen effizienten, qualitätsorientierten Entwurf. Es ist jedoch sehr wissensintensiv und aufwendig, entsprechende Analyse- oder Simulations-Modelle aufzustellen und die Ergebnisse auszuwerten, weshalb die Methoden in der Praxis der Automation selten verwendet werden. Viel vertrauter sind dem Entwerfer hingegen die speziellen Software-Tools, mit denen in der Automation Netzwerke entworfen werden. Auf Basis der Datenbanken dieser Tools werden in dieser Arbeit verschieden Verfahren zur automatischen Systemmodellierung, Verkehrsmodellierung, Leistungsbewertung und Fehlerdiagnose zu einem Control Network Performance Engineering kombiniert, welches die Qualitätsbewertung und -beratung nahtlos und ohne Mehraufwand in den Netzwerkentwurf integriert. (Die Dissertation wurde veröffentlicht im Jörg Vogt Verlag, Voglerstr. 20, 01277 Dresden, Internet: http://www.vogtverlag.de/, email: info@vogtverlag.de, ISBN 978-3-938860-10-6)
During the design of large automation networks, performance analysis methods can be used for testing and dimensioning the network before implementation and are essential for an efficient and reliable design process. However, setting up the necessary analytical or simulative models is time-consuming, requires in-depth knowledge, and is therefore often not applicable in practice. The network designers are much more used to the design tools used to develop automation networks. Based on these tools' databases various methods for automated system and traffic modeling, performance analysis and diagnoses are combined in the control network performance engineering that seamlessly integrates quality analysis and consulting into network design without requiring additional effort. (This manuscript is also available - in the form of a book - from Jörg Vogt Verlag, Voglerstr. 20, 01277 Dresden, Germany world-wide web address: http://www.vogtverlag.de/, electronic-mail address: info@vogtverlag.de, ISBN 978-3-938860-10-6 )
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Kim, Yuchul. "Spatial spectrum reuse in wireless networks design and performance." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-05-3364.

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This dissertation considers the design, evaluation and optimization of algorithms/ techniques/ system parameters for distributed wireless networks specifically ad-hoc and cognitive wireless networks. In the first part of the dissertation, we consider ad-hoc networks using opportunistic carrier sense multiple access (CSMA) protocols. The key challenge in optimizing the performance of such systems is to find a good compromise among three interdependent quantities: the density and channel quality of the scheduled transmitters, and the resulting interference seen at receivers. We propose two new channel-aware slotted CSMA protocols and study the tradeoffs they achieve amongst these quantities. In particular, we show that when properly optimized these protocols offer substantial improvements relative to regular CSMA -- particularly when the density of nodes is moderate to high. Moreover, we show that a simple quantile based opportunistic CSMA protocol can achieve robust performance gains without requiring careful parameter optimization. In the second part of the dissertation, we study a cognitive wireless network where licensed (primary) users and unlicensed 'cognitive' (secondary) users coexist on shared spectrum. In this context, many system design parameters affect the joint performance, e.g., outage and capacity, seen by the two user types. We explore the performance dependencies between primary and secondary users from a spatial reuse perspective, in particular, in terms of the outage probability, node density and joint network capacity. From the design perspective the key system parameters determining the joint transmission capacity, and tradeoffs, are the detection radius (detection signal to interference and noise power ratio (SINR) threshold) and decoding SINR threshold. We show how the joint network capacity region can be optimized by varying these parameters. In the third part of the dissertation, we consider a cognitive network in a heterogeneous environment, including indoor and outdoor transmissions. We characterize the joint network capacity region under three different spectrum (white space) detection techniques which have different degrees of radio frequency (RF) - environment awareness. We show that cognitive devices relying only on the classical signal energy detection method perform poorly due to limitations on detecting primary transmitters in environments with indoor shadowing. This can be circumvented through direct use (e.g., database access) of location information on primary transmitters, or better yet, on that of primary receivers. We also show that if cognitive devices have positioning information, then the secondary network's capacity increases monotonically with increased indoor shadowing in the environment. This dissertation extends the recent efforts in using stochastic geometric models to capture large scale performance characteristics of wireless systems. It demonstrates the usefulness of these models towards understanding the impact of physical /medium access (MAC) layer parameters and how they might be optimized.
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Sant, Jeetendra C. "Performance Analysis Of Multiple Access Schemes In A Wireless Packet Network." Thesis, 1998. http://etd.iisc.ernet.in/handle/2005/2163.

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"A multiple access protocol of carrier-sense multiple access with collision avoidance using pilot tone technique on passive optical networks." 2003. http://library.cuhk.edu.hk/record=b5891639.

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Jorden Yeong-Tswen, Tse.
Thesis (M.Phil.)--Chinese University of Hong Kong, 2003.
Includes bibliographical references (leaves 76-76).
Abstracts in English and Chinese.
ACKNOWLEDGEMENTS --- p.2
ABSTRACT --- p.3
摘要 --- p.4
CONTENTS --- p.5
Chapter CHAPTER 1: --- INTRODUCTION --- p.8
Chapter 1.1. --- First Mile Evolution --- p.8
Chapter 1.2. --- Access： Passive Optical Network (PON) --- p.10
Chapter 1.2.1. --- ATM-PON (APON) --- p.13
Chapter 1.2.2. --- Ethernet PON (EPON) --- p.14
Chapter 1.3. --- Problem Definition and Possible Solutions --- p.16
Chapter 1.3.1. --- Wavelength Division Multiplexing (WDM) --- p.17
Chapter 1.3.2. --- Time Division Multiplexing (TDM) --- p.18
Chapter 1.3.3. --- Sub-carrier Multiplexing (SCM) & Frequency Division Multiplexing (FDM) --- p.20
Chapter 1.3.4. --- Code Division Multi Access (CDMA) --- p.20
Chapter 1.4. --- Thesis Organization --- p.20
Chapter CHAPTER 2: --- BACKGROUND --- p.22
Chapter 2.1. --- EPON Solution：- MPCP --- p.22
Chapter 2.2. --- CSMA/CD on PON --- p.26
Chapter 2.3. --- Motivation --- p.28
Chapter CHAPTER 3: --- CSMA/CA PROTOCOL USING PILOT TONE ON PON --- p.29
Chapter 3.1. --- Basic Protocol Description --- p.29
Chapter 3.1.1. --- With No Contention --- p.31
Chapter 3.1.2. --- With Contention --- p.32
Chapter 3.1.3. --- With Contention and Winner --- p.33
Chapter 3.2. --- Simulation --- p.35
Chapter 3.2.1. --- Effect of Loading on Network Utilization --- p.37
Chapter 3.2.2. --- Effect of Network Size on Utilization --- p.39
Chapter 3.2.3. --- Delay Performance --- p.41
Chapter 3.2.4. --- Effect of Distance from Remote Node --- p.44
Chapter 3.2.5. --- Effect of Maximum Packet Duration on Utilization and Delay --- p.45
Chapter 3.3. --- Conclusions --- p.47
Chapter CHAPTER 4: --- PROTOCOL ENHANCEMENT ON VARIOUS ASPECTS --- p.48
Chapter 4.1. --- Utilization Enhancement --- p.48
Chapter 4.1.1. --- Improvement on Network Utilization --- p.50
Chapter 4.1.2. --- Network Delay Performance --- p.52
Chapter 4.1.3. --- Conclusions --- p.53
Chapter 4.2. --- Capture Effect --- p.53
Chapter 4.2.1. --- Solution by Varying Ts --- p.54
Chapter 4.2.2. --- Simulations --- p.55
Chapter 4.2.3. --- Conclusions --- p.58
Chapter 4.3. --- Introducing Cos to existing network --- p.59
Chapter 4.3.1. --- Principle --- p.59
Chapter 4.3.2. --- Simulation Model --- p.60
Chapter 4.3.3. --- Utilization Performance --- p.61
Chapter 4.3.4. --- Delay Performance --- p.64
Chapter 4.3.5. --- Conclusions --- p.68
Chapter CHAPTER 5: --- CONCLUSIONS --- p.69
Chapter 5.1. --- Thesis Summary --- p.69
Chapter 5.2. --- Future Work --- p.71
REFERENCES --- p.73
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Books on the topic "Carrier sense multiple access (CSMA) protocol"

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Institute, American National Standards. IEEE standards for local and metropolitan area networks: Supplement to carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications. New York: Institute of Electrical and Electronics Engineers, 1992.

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Institute, American National Standards. IEEE standards for local and metropolitan area networks: Supplement to carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications : layer management for 10 Mb/s baseband repeaters (section 19). New York, NY: Institute of Electrical and Electronics Engineers, 1992.

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Institute, American National Standards. IEEE standards for local and metropolitan area networks: Supplement to carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications : fiber optic active and passive star-based segments, type 10BASE-F (Sections 15-18). New York, N.Y: Institute of Electrical and Electronics Engineers, 1993.

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Robinson, Daryl C. Air traffic control improvement using prioritized CSMA. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2001.

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IEEE Computer Society. Technical Committee on Computer Communications., ed. Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications: IEEE standards for local area networks. New York, NY, USA: Institute of Electrical and Electronics Engineers, 1985.

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Institute, American National Standards. Supplements to Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications: ANSI/IEEE 802.3a-1988, medium attachment unit and baseband medium specifications, type 10BASE2 (section 10) ... : IEEEstandards for local area networks. New York, NY, USA: Institute of Electrical and Electronics Engineers, 1987.

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IEEE Computer Society. Technical Committee on Computer Communications. and American National Standards Institute, eds. Supplements to Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications: ANSI/IEEE 802.3a-1988, medium attachment unit and baseband medium specifications, type 10BASE2 (section 10) ... : IEEE standards for local area networks. New York, NY, USA: Institute of Electrical and Electronics Engineers, 1987.

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Institute Of Electrical and Electronics Engineers. IEEE Standards for Local and Metropolitan Area Networks: Supplement to Carrier Sense Multiple Access With Collision Detection (Csma/CD Access Metho). IEEE Standards Office, 1993.

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IEEE Computer Society. LAN/MAN Standards Committee., Institute of Electrical and Electronics Engineers., and IEEE Standards Board, eds. Supplement to carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications: Type 10BASE5 medium attachment unit (MAU) protocol implementation conformance statement (PICS) proforma (subclause 8.8). New York, NY: Institute of Electrical and Electronics Engineers, 1996.

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IEEE Computer Society. LAN/MAN Standards Committee., Institute of Electrical and Electronics Engineers., and IEEE-SA Standards Board, eds. Information technology -- telecommunications and information exchange between systems -- local and metropolitan area networks -- specific requirements--: Amendment to Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specifications : aggregation of multiple link segments. New York, N.Y., USA: Institute of Electrical and Electronics Engineers, 2000.

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Book chapters on the topic "Carrier sense multiple access (CSMA) protocol"

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Ismail, Nor-Syahidatul N., Sharifah H. S. Ariffin, N. M. Abdul Latiff, Farizah Yunus, and Norshiela Fisal. "Hybrid MAC Layer Design for MPEG-4 Video Transmission in WSN." In Advances in Wireless Technologies and Telecommunication, 410–32. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5170-8.ch016.

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Wireless Sensor Networks (WSNs) have been attracting increasing interest lately from the research community and industry. The main reason for such interest is the fact that WSNs are considered a promising means of low power and low cost communication that can be easily deployed. Nowadays, the advanced protocol design in WSNs has enhanced their capability to transfer video in the wireless medium. In this chapter, a comprehensive study of Medium Access Control (MAC) and MPEG-4 video transmission is presented. Various classifications of MAC protocols are explained such as random access, schedule access, and hybrid access. In addition, a hybrid MAC layer protocol design is proposed, which combines Carrier Sense Multiple Access (CSMA) and unsynchronized Time Division Multiple Access (TDMA) protocols using a token approach protocol. The main objective of this chapters is to present the design of a MAC layer that can support video transfer between nodes at low power consumption and achieve the level of quality of service (QoS) required by video applications.
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Hassan, Md Imrul, Hai L. Vu, and Taka Sakurai. "Medium Access Protocols for Cooperative Collision Avoidance in Vehicular Ad-Hoc Networks." In Digital Rights Management, 354–75. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2136-7.ch017.

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It is envisaged that supporting vehicle-to-vehicle and vehicle-to-infrastructure communications with a Vehicular Ad-Hoc Network (VANET) can improve road safety and increase transportation efficiency. Among the candidate applications of VANETs, cooperative collision avoidance (CCA) has attracted considerable interest as it can significantly improve road safety. Due to the ad hoc nature of these highly dynamic networks, no central coordination or handshaking protocol can be assumed and safety applications must broadcast information of interest to many surrounding cars by sharing a single channel in a distributed manner. This gives rise to one of the key challenges in vehicle-to-vehicle communication systems, namely, the development of an efficient and reliable medium access control (MAC) protocol for CCA. In this chapter, we provide an overview of proposed MAC protocols for VANETs and describe current standardization activities. We then focus on the performance of the IEEE 802.11 carrier sense multiple access (CSMA) based MAC protocol that is being standardized by the IEEE standards body for VANET applications. In particular, we review prominent existing analytical models and study their advantages, disadvantages and their suitability for performance evaluation of the MAC protocol for VANETs. After a discussion of the shortcomings of these models, we develop a new analytical model in the second half of the chapter. Explicit expressions are derived for the mean and standard deviation of the packet delay, as well as for the packet delivery ratio (PDR) at the MAC layer in an unsaturated network formed by moving vehicles on a highway. We validate the analytical results using extensive simulations and show that good accuracy can be achieved with the proposed model for a range of topologies and traffic load conditions. More importantly, using the model, we show that hidden terminals can have a severe, detrimental impact on the PDR, which may compromise the reliability required for safety applications.
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Conference papers on the topic "Carrier sense multiple access (CSMA) protocol"

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Srivastava, Deepak, Vibhor Sharma, and Dheresh Soni. "Optimization of CSMA (Carrier Sense Multiple Access) over AODV, DSR & WRP Routing Protocol." In 2019 4th International Conference on Internet of Things: Smart Innovation and Usages (IoT-SIU). IEEE, 2019. http://dx.doi.org/10.1109/iot-siu.2019.8777683.

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Abyaneh, Arezou Zamanyzadeh, and Nizar Zorba. "IEEE 802.11 based Medium Access Design for Wireless IoT-Blockchain Networks." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0244.

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Communication is a very basic essence of the blockchain network and must be carefully planned while integrating with IoT, where an extremely large number of devices are interconnected. In this work, blockchain nodes are assumed to use wireless channels to communicate among themselves and other elements of the IoT setup. These communications can be in unicast and broadcast manner where transmission latency and throughput are significant metrics that might jeopardize the overall system. This work is proposing a Medium Access Control (MAC) mechanism addressing these performance metrics and best suitable for wireless IoT-Blockchain system. The proposed MAC protocol is based on the widely used IEEE 802.11 protocol, Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) basic access.
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Carvalho, Marcelo M., and J. J. Garcia-Luna-Aceves. "Carrier-Sense Multiple Access with Transmission Acquisition (CSMA/TA)." In 2018 IFIP Networking Conference (IFIP Networking) and Workshops. IEEE, 2018. http://dx.doi.org/10.23919/ifipnetworking.2018.8696617.

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Jayabal, Raymond J., Sun Sumei, Pang Chin Ming, Zhang Qingjun, Ma Yugang, Cheng Wang Cho, and Goh Leng Meng. "CSMA-TGT: Carrier-Sense Multiple Access with Transmission Guiding Tracks." In 2019 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS). IEEE, 2019. http://dx.doi.org/10.1109/vts-apwcs.2019.8851629.

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Peng, Jun, and Liang Cheng. "Revisiting Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)." In 2006 40th Annual Conference on Information Sciences and Systems. IEEE, 2006. http://dx.doi.org/10.1109/ciss.2006.286654.

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Lino, Miguel, Vitor Vasconcelos, Erico Leão, André Soares, Carlos Montez, Ricardo Moraes, and Francisco Vasques. "Mecanismo Eficiente para Disseminação do Tráfego de Controle em Redes de Sensores Sem Fio Cluster-Tree baseadas no IEEE 802.15.4." In IX Simpósio Brasileiro de Engenharia de Sistemas Computacionais (SBESC). Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sbesc_estendido.2019.8628.

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As normas IEEE 802.15.4 e ZigBee definem a pilha de protocolos amplamente utilizada na operação de Redes de Sensores sem Fio (RSSF). A topologia cluster-tree, suportada por estas normas, oferece recursos como escalabilidade, sendo apontada pela literatura como a mais adequada para a implementação de aplicações de RSSFs em larga escala. Entretanto, essas redes podem sofrer com congestionamentos e atrasos devido aos seus diferentes padrões de tráfego. Por um lado, são usualmente priorizadas as mensagens do tráfego de monitoramento geradas por nós sensores, que seguem em direção ao coordenador da rede (tráfego upstream); por outro, sofrem maiores atrasos as mensagens de controle que seguem o tráfego inverso (tráfego downstream). Este artigo propõe um mecanismo eficiente para a rápida disseminação do tráfego de controle em RSSFs cluster- tree. A ideia principal consiste em combinar um esquema de escalonamento híbrido periódico, com a definição de janelas de oportunidade Top-Down, com um esquema de configuração adequada dos parâmetros CSMA-CA (Carrier Sense Multiple Access with Collision Avoidance) para os nós coordenadores, a fim de possibilitar uma rápida disseminação das mensagens de controle, sem gerar impactos relevantes para o típico tráfego de monitoramento. Resultados de simulações mostram que a definição de janelas de oportunidades Top-Down, aliada com uma adequada configuração de valores macMinBE e macMaxBE para nós coordenadores, podem reduzir significativamente os atrasos de comunicação e aumentar a taxa de entrega de mensagens de controle, sem interferir de forma relevante nas métricas do tráfego de monitoramento, mesmo em cenários de grande densidade de nós sensores.
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Boppana, Surendra, Madhan Sivakumar, and John M. Shea. "The Overlapped Carrier-Sense Multiple Access (OCSMA) Protocol." In MILCOM 2007 - IEEE Military Communications Conference. IEEE, 2007. http://dx.doi.org/10.1109/milcom.2007.4454971.

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Niu, Zhaofeng, Jiguo Yu, Xiuzhen Cheng, and Tianyi Song. "SINR-Q-CSMA: Carrier Sense Multiple Access Based on Queue Length under SINR." In 2016 International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI). IEEE, 2016. http://dx.doi.org/10.1109/iiki.2016.100.

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Razaque, Abdul, Savitesh Jain, M. N. K. Sai Santosh Irrinki, Fathi H. Amsaad, Musbah Abdulgader, and Niraj. "Simultaneous Priority and Detection based Carrier Sense Multiple Access protocol." In 2016 IEEE International Conference on Electro Information Technology (EIT). IEEE, 2016. http://dx.doi.org/10.1109/eit.2016.7535224.

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Choi, Hyun-Ho, Howon Lee, and In-Ho Lee. "Carrier sensing multiple access with collision resolution (CSMA/CR) protocol for next-generation wireless LAN." In 2013 Fifth International Conference on Ubiquitous and Future Networks (ICUFN). IEEE, 2013. http://dx.doi.org/10.1109/icufn.2013.6614815.

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