A Cooperative Diversity-Based Robust MAC Protocol in Wireless Ad Hoc Networks

Moh, Sangman; Yu, Chansu

doi:10.1109/tpds.2010.99

Cited by 49 publications

(51 citation statements)

References 34 publications

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“…Motivated by issues with cooperation based on historical transmission, authors in [12]- [14] propose cooperative MAC protocols in which decision of cooperation and helper selection are made during the ongoing transmission. Cooperation decisions are made based on signal strength of control signal and/or information exchange among nodes.…”

Section: Related Work On Cooperative Mac Protocolsmentioning

confidence: 99%

“…Cooperation decisions are made based on signal strength of control signal and/or information exchange among nodes. In [12], the CD-MAC is proposed to improve transmission reliability in which the source node searches for a helper to retransmit its packets if the destination sends the negative acknowledgement (NACK) or does not acknowledge (ACK) the reception. Similarly in [13], cooperation is enabled when vehicles missed broadcast packets from an RSU, such that helper nodes are selected to rebroadcast the packets, improving the overall throughput of a network and avoiding collision due to rebroadcast.…”

Section: Related Work On Cooperative Mac Protocolsmentioning

confidence: 99%

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CAH-MAC: Cooperative ADHOC MAC for Vehicular Networks

Bharati

Zhuang

2013

IEEE J. Select. Areas Commun.

133

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Abstract-Due to the rapid advancement in the wireless communication technology and automotive industries, the paradigm of vehicular ad-hoc networks (VANETs) emerges as a promising approach to provide road safety, vehicle traffic management, and infotainment applications. Cooperative communication, on the other hand, can enhance the reliability of communication links in VANETs, thus mitigating wireless channel impairments due to the user mobility. In this paper, we present a cooperative scheme for medium access control (MAC) in VANETs, referred to as Cooperative ADHOC MAC (CAH-MAC). In CAH-MAC, neighboring nodes cooperate by utilizing unreserved time slots, for retransmission of a packet which failed to reach the target receiver due to a poor channel condition. Through mathematical analysis and simulation, we show that our scheme increases the probability of successful packet transmission and hence the network throughput in various networking scenarios.

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Section: Related Work On Cooperative Mac Protocolsmentioning

confidence: 99%

Section: Related Work On Cooperative Mac Protocolsmentioning

confidence: 99%

CAH-MAC: Cooperative ADHOC MAC for Vehicular Networks

Bharati

Zhuang

2013

IEEE J. Select. Areas Commun.

133

View full text Add to dashboard Cite

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“…Time space depends on the channel condition (idle o r busy). If the channel is busy, it enters a backoff procedure among contention window [1,4,5,11,12,22].…”

Section: About the Wlan Cooperati Ve Mac Schemementioning

confidence: 99%

“…In this technique have a potential to improve the performance of wireless network, also appropriate for broadcast transmission. Our simu lation this technique is implemented mobile ad -hoc network to enhance the performance of network [1,2,5,6,7]. This is hot area of Research cooperative transmission scheme.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers aim is enhancement wireless network parameters like throughputs, end to end delay, minimizat ion energy consumption using cooperative scheme. The cooperative scheme is also implemented on physical layer level to imp rove the performance [11,12,13,15]. This paper is organized as: Sect ion-II Cooperative MAC scheme is help to data transmission using Spatial Diversity, Section-III Simu lation and results using NS-2, Section-IV Conclusion of result analysis.…”

Section: Introductionmentioning

confidence: 99%

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Cooperative Medium Access Control Protocol for Mobile Ad-hoc Networks using Spatial Diversity

Khan¹,

Beg²,

Khan³

2013

IJISA

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Abstract-Enhancement the Performance of MANET (Mobile Ad-hoc Network) using spatial d iversity. Spatial d iversity imp lemented using cooperative transmission technique in Medium access control (MAC) layer level protocol. In noisy environment limit the network performance like coverage area, limit number of node, degrade packet transmission rate, increase packet loss rate etc. In this paper enhance the source to destination transmission range, minimize the packet loss, improve packet transmission rate and appropriate end to end delay. When direct lin k is fail to transmit packet then Cooperative scheme help to transmit packet. Cooperative scheme is to help the packet transmission with five handshakes instead of four. This scheme imp lemented in MANET network on MAC layer protocol. Cooperative scheme imp rove the performance with help of intermediate node between sources to destination. We are performance analysis using discrete simu lator NS-2 in MANET. Our performance based on MAC layer level with cooperative scheme in IEEE W LAN standard CSMA/CA protocol.

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Link-Layer Cooperative Communication in Vehicular Networks

Bharati¹

2018

Wireless Networks

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Vehicular ad hoc networks (VANETs) are a special kind of communication networks and possess unique characteristics as compared with general mobile ad hoc networks (MANETs), where vehicles communicate with each other or with stationary road side units. Hence, directly applying the existing communication protocols designed for MANETs may not be reliable and efficient in VANETs. Thus, this thesis presents link-layer cooperative frameworks to improve transmission reliability and network throughput over distributed TDMA MAC 1 protocols for VANETs.We present a link-layer node cooperation scheme for VANETs, referred to as Cooperative ADHOC MAC (CAH-MAC). In CAH-MAC, neighboring nodes cooperate to utilize unused time slots to retransmit failed packets. Throughput improvement is achieved by using idle time slots that are wasted in the absence of node cooperation. In addition, as a packet is retransmitted earlier by a relay node, transmission delay and packet dropping rate are reduced. We study the effects of a dynamic networking environment on the performance of CAH-MAC. It is observed that, system performance degrades due to cooperation collisions. To tackle this challenge, we present an enhanced CAH-MAC (eCAH-MAC) scheme. In eCAH-MAC, using different types of packet and by delaying or suspending some relay transmissions, cooperation collisions can be avoided and cooperation opportunities can be efficiently utilize without disrupting the normal operations of the distributed TDMA MAC.We propose a node cooperation based makeup strategy for vehicular networks, referred to as cooperative relay broadcasting (CRB), such that neighboring nodes proactively rebroadcast the packet from a source node. An optimization framework is developed to provide an upper bound on the CRB performance with accurate channel information. Further, we propose a channel prediction scheme based on a two-state first-order Markov chain, to select the best relaying node for CRB. As packets are repeatedly broadcasted by the neighboring nodes before they expire, the proposed CRB framework provides a more reliable broadcast service as compared with existing approaches.The proposed node cooperation frameworks enhance the performance of distributed TDMA MAC and make it more robust to tackle VANET's dynamic networking conditions.

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A Cooperative Diversity-Based Robust MAC Protocol in Wireless Ad Hoc Networks

Cited by 49 publications

References 34 publications

CAH-MAC: Cooperative ADHOC MAC for Vehicular Networks

CAH-MAC: Cooperative ADHOC MAC for Vehicular Networks

Cooperative Medium Access Control Protocol for Mobile Ad-hoc Networks using Spatial Diversity

Link-Layer Cooperative Communication in Vehicular Networks

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