Optimal CSMA: A survey

Yun, Se-Young; Ye, Yi; Shin, Jinwoo; Eun, Do Young

doi:10.1109/iccs.2012.6406138

Cited by 48 publications

(30 citation statements)

References 22 publications

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“…Furthermore, multiple theoretical papers presented solutions based on the similar mathematical framework, each of them focusing on different aspects of the protocol operation, e.g., [4], [5], [21], and [22] (see [23]for a survey). Our work is in part motivated by oCSMA theory, but as reported in [24], [25], and our evaluation, there still exist many gaps between oCSMA theory and 802.11 practice.…”

Section: Related Workmentioning

confidence: 99%

Making 802.11 DCF Near-Optimal: Design, Implementation, and Evaluation

Lee

et al. 2016

IEEE/ACM Trans. Networking

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This paper proposes a new protocol called Optimal DCF (O-DCF). O-DCF modifies the rule of adapting CSMA parameters, such as backoff time and transmission length, based on a function of the demand-supply differential of link capacity captured by the local queue length. O-DCF is fully compatible with 802.11 hardware, so that it can be easily implemented only with a simple device driver update. O-DCF is inspired by the recent analytical studies proven to be optimal under assumptions, which often generates a big gap between theory and practice. O-DCF effectively bridges such a gap, which is implemented in off-theshelf 802.11 chipset. Through extensive simulations and real experiments with a 16-node wireless network testbed, we evaluate the performance of O-DCF and show that it achieves near-optimality in terms of throughput and fairness and outperforms other competitive ones, such as 802.11 DCF, optimal CSMA, and DiffQ for various scenarios. Also, we consider the coexistence of O-DCF and 802.11 DCF and show that O-DCF fairly shares the medium with 802.11 via its parameter control.

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Section: Related Workmentioning

confidence: 99%

Making 802.11 DCF Near-Optimal: Design, Implementation, and Evaluation

Lee

et al. 2016

IEEE/ACM Trans. Networking

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“…We suppose slotted p-persistent CSMA for access; hence, each station accesses the channel in the idle slot with probability p (0 < p ≤ 1) [6], [7]. Although the access probability p can be adapted to the network conditions or traffic loads, 3 we fix the value of p in this study to focus on the effect of the other parameters on the performance because the related access control issues have already been investigated in many literatures [24]- [26]. 6.…”

Section: A Assumptions and Notationsmentioning

confidence: 99%

Delay analysis of carrier sense multiple access with collision resolution

Choi

Lee

2015

J. Commun. Netw.

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To improve the efficiency of carrier sense multiple access (CSMA)-based medium access control (MAC) protocols, CSMA with collision resolution (CSMA/CR) has been proposed. In the CSMA/CR, a transmitting station can detect a collision by employing additional sensing after the start of a data transmission and then resolve the next collision that might occur by broadcasting a jam signal during a collision detection (CD) period. In this paper, we analyze the delay of a CSMA/CR based on a generic ppersistent CSMA model and obtain the minimum achievable delay of the CSMA/CR by finding the optimal length of the CD period according to the number of contending stations. Through this delay analysis, we also investigate the throughput-delay characteristics of the CSMA/CR protocol according to various parameters. Analysis and simulation results show that the CSMA/CR has a considerably lower delay and its throughput-delay characteristic is significantly improved than the conventional CSMA/CA and wireless CSMA/CD protocols.

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“…Devices attached to the network first sense the channel and then transmit if and only if they get an empty channel otherwise if the channel is busy devices attempt to wait. It is widely adopted in wireless networks due to its simplicity and distributed nature [15]. In Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) technique a node signals its intent to transmit earlier which results in collision avoidance.…”

Section: A Csma and Csma/camentioning

confidence: 99%

Performance Analysis of MAC Layer Protocols in Wireless Sensor Network

Ahmed

Khurram

2014

IJIEEB

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Abstract-Media Access Control (MAC) layer protocols have a critical role in making a typical Wireless Sensor Network (WSN) more reliable and efficient. Choice of MAC layer protocol and other factors including number of nodes, mobility, traffic rate and playground size dictates the performance of a particular WSN. In this paper, the performance of an experimental WSN is evaluated using different MAC layer protocols. In this experiment, a WSN is created using OMNeT++ MiXiM network simulator and its performance in terms of packet delivery ratio and mean latency is evaluated. The simulation results show that IEEE 802.11 MAC layer protocol performs better than CSMA, B-MAC and IEEE 802.15.4 MAC layer protocols. In the considered scenario, IEEE 802.15.4 is ranked second in performance, followed by CSMA and B-MAC.

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Optimal CSMA: A survey

Cited by 48 publications

References 22 publications

Making 802.11 DCF Near-Optimal: Design, Implementation, and Evaluation

Making 802.11 DCF Near-Optimal: Design, Implementation, and Evaluation

Delay analysis of carrier sense multiple access with collision resolution

Performance Analysis of MAC Layer Protocols in Wireless Sensor Network

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