On avoiding RTS collisions for IEEE 802.11-based wireless ad hoc networks

Shih, Kuei‐Ping; Liao, Wen-Hwa; Chen, Hung-Chang; Chou, Chien-Min

doi:10.1016/j.comcom.2008.09.024

Cited by 31 publications

(35 citation statements)

References 20 publications

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“…Another remarkable characteristic of this protocol is that it does not require extra transceiver for the busy tone. However, most of the proposed MAC protocols with the assistance of busy tone(s) [5]- [10] require at least two transceivers -one for data and other(s) for indication, which increase the hardware cost of the terminals.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, we have also adopted a modified backoff algorithm so as to reduce the probability of packet collision. In the last years, there are many MAC protocols with the assistance of busy tone(s) [5]- [10]. But most of them aim to solve the problems for hidden terminals and/or exposed terminals, which are the most important problems in the Mobile Ad Hoc NETwork (MANET).…”

Section: Introductionmentioning

confidence: 99%

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A Highly Efficient Medium Access Protocol in Shared Wireless Medium Networks

Chen

Zhu

Liu

2007

2007 IEEE Symposium on Computers and Communications

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IEEE 802. 11 Distributed Coordination Function (DCF) is the most popular Medium Access Control (MAC) protocol in distributed wireless networks, in which the wireless medium is shared. But the throughput of the network is restrained because of collisions and the idle time slots wasted for competition. In this paper, we present a new Medium Access protocol with a Busy Tone (MBT)'. In this protocol, the backoffprocedure is executed in the busy tone instead of the data channel, so there is almost no wasted time slot in the data channel. Besides, this paper also introduces a modified backoff algorithm different with that of IEEE 802.11 DCF. By this backoff algorithm, the probability ofpacket collision can be significantly reduced.A remarkable characteristic of this protocol is that it does not require extra transceiver for the busy tone, which doesn't increase the hardware cost of the mobile station. We study the performance of MABT protocol through simulated experiments. The results show that MABT protocol is more efficient than the one discussed in the IEEE 802. l le task group.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Highly Efficient Medium Access Protocol in Shared Wireless Medium Networks

Chen

Zhu

Liu

2007

2007 IEEE Symposium on Computers and Communications

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“…Each node is equipped with a radio transceiver, which implements the IEEE802.11 standard. As in (Haas and Deng, 2002;Shih et al, 2009;Ma et al, 2012), nodes are reassumed to be capable of receiving and sending data packets along with pulse/tone signals. Pulse/Tone signals have been used to notify nearby nodes about a particular condition of the network, when the identity of the source node is irrelevant.…”

Section: Communication Modelmentioning

confidence: 99%

A Fast-and-Fair Collision Resolution Protocol Tailored for Ad Hoc Wireless Networks

Caetano

Guimarães²,

Bordim³

2016

Journal of Computer Science

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Abstract:Wireless technologies have permeated a significant number of devices over the years. On the other hand, Medium Access Control (MAC) protocols strive to deal with an increasing number of contending nodes on crowded frequency bands. This work presents an efficient medium access control resolution protocol. The proposed protocol, termed Collision Resolution Protocol (CRP), uses pulse/tone signaling that works in both Collision Detection (CD) and Non-Collision Detection (NCD) environments. Given n>1 contending nodes, CRP selects a single transmitting node in 16n and 40n time slots, respectively, for the CD and the NCD scenarios, with probability of at least 1-2 -1.5n . Furthermore, CRP does not require an exact number, or estimation, of the contending nodes.Extensive simulations on the OMNeT++ shows that, for n = 256 and considering CD-capability, CRP successfully grants channel access in 0.03% of the time required by the IEEE 802.11 standard while improving the number of transmissions per second in 100%. In addition, CRP provides fair resource allocation and reduced channel access latency.

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“…The RTS Collision Avoidance (RCA) MAC protocol [5] is another collision prevention scheme. It announces the control frame transmission to two-hop neighbors in advance.…”

Section: Related Workmentioning

confidence: 99%

“…This control overhead degrades the network throughput, especially in high-speed wireless networks [3]. Some variants [4][5][6][7] based on RTS/CTS will be discussed later.…”

Section: Introductionmentioning

confidence: 99%

Fast Retransmission Scheme for Overcoming Hidden Node Problem in IEEE 802.11 Networks

Jeon¹,

Kim²,

Lee³

et al. 2011

Journal of Computing Science and Engineering

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To avoid collisions, IEEE 802.11 medium access control (MAC) uses predetermined inter-frame spaces and the random back-off process. However, the retransmission strategy of IEEE 802.11 MAC results in considerable time wastage. The hidden node problem is well known in wireless networks; it aggravates the consequences of time wastage for retransmission. Many collision prevention and recovery approaches have been proposed to solve the hidden node problem, but all of them have complex control overhead. In this paper, we propose a fast retransmission scheme as a recovery approach. The proposed scheme identifies collisions caused by hidden nodes and then allows retransmission without collision. Analysis and simulations show that the proposed scheme has greater throughput than request-to-send and clear-to-send (RTS/CTS) and a shorter average waiting time.

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On avoiding RTS collisions for IEEE 802.11-based wireless ad hoc networks

Cited by 31 publications

References 20 publications

A Highly Efficient Medium Access Protocol in Shared Wireless Medium Networks

A Highly Efficient Medium Access Protocol in Shared Wireless Medium Networks

A Fast-and-Fair Collision Resolution Protocol Tailored for Ad Hoc Wireless Networks

Fast Retransmission Scheme for Overcoming Hidden Node Problem in IEEE 802.11 Networks

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