Link-Utility-Based Cooperative MAC Protocol for Wireless Multi-Hop Networks

Zhou, Yong; Liu, Ju; Zheng, Lina; Zhai, Chao; Chen, He

doi:10.1109/twc.2011.122010.100773

Cited by 44 publications

(28 citation statements)

References 30 publications

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“…We assume that each qualified relay knows its qualification status and has instantaneous SNR information of the channel between itself and its intended destination. A back-off scheme can be used to select the best relay in a distributed manner, which requires only local CSI [28]. When the decoding set Φ 0 is not empty, a qualified relay with the best channel to the destination obtains the shortest back-off duration and contends to be the best relay first.…”

Section: Cooperative Transmission and Relay Selectionmentioning

confidence: 99%

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

Zhou

Zhuang

2015

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we investigate the network throughput achieved by both spatial diversity and spatial frequency reuse in a wireless ad hoc network with randomly positioned single-hop source-destination pairs and relays. Compared to conventional direct transmissions, cooperative communication can enhance single-link transmission reliability, but reduce network-wide spatial frequency reuse due to relay transmissions. To study the tradeoff between these two competing effects, we construct a geographically constrained region for relay selection based on channel state information. The network throughput, defined as the product of the success probability of each link and the expected number of concurrent transmissions, is derived as a function of the total number of links, relay density, size of relay selection region, and distance between the source and destination. The performance analysis is carried out for both selection combining and maximum ratio combining at the destination. Such analytical results can evaluate the effectiveness of cooperative communication and provide useful insights on the design of largescale networks. Finally, extensive simulations are conducted to validate the performance analysis.

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Section: Cooperative Transmission and Relay Selectionmentioning

confidence: 99%

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

Zhou

Zhuang

2015

IEEE Trans. Wireless Commun.

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“…DCMAC jointly considers the CSI and MAC overhead to select the optimal relay node. Zhou et al propose a novel link-utility-based cooperative MAC (LC-MAC) protocol [15], which improves the throughput and energy efficiency. In LC-MAC, each node tries to maximize its own link-utility by jointly adjusting transmission rate and power based on the instantaneous channel measurements.…”

Section: Introductionmentioning

confidence: 99%

A Store-and-Forward Cooperative MAC for Wireless Ad Hoc Networks

Song

Daneshmand

2016

Mobile Netw Appl

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Cooperative communications are widely used to increase the throughput of wireless networks. It is important to select the appropriate relay nodes to enhance the performance of cooperative communications. In wireless ad hoc networks, such as IEEE802.11 WLAN, the distributed MAC is used to share the wireless channel to different nodes. In this work, a simple store-and-forward cooperative MAC (SFC-MAC) is proposed, which is fully compatible with IEEE 802.11 MAC. In SSF-MAC, the relay node just stores the packets received from the sender and forward them to the receiver after it successfully contend the channel. Furthermore, an model is built to analyze the performance of relay methods in the ideal channel and imperfect channel. We utilize throughput performance as a metric to determine whether a relay node is selected. The analysis and simulation results show that the proposed simple SSF-MAC can increase the system throughput.

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“…In this paper, we also take into account the problems of selecting the best relay. In recent years, relay selection schemes have been studied extensively and the outstanding works have been reflected in [5][6][7][8][9][10][11][12][13][14][15]. According to the difference in relay selection criterion, we can broadly classify the relay selection schemes into five categories.…”

Section: Introductionmentioning

confidence: 99%

“…However, the PARS does not combine with the specific protocol to analyze energy consumption, and the energy consumption brought about by the protocol overhead cannot be ignored. Zhou et al in [8] designed a link-utilitybased cooperative MAC (LC-MAC) protocol and analyzed the problems of energy consumption. (3) Relay selection based on geographical information: In [9], a geographic-based relay selection scheme was proposed to utilize the sourcerelay and relay-destination distance as criteria to choose the best relay, aiming to minimize the symbol error probability (SEP) at the destination.…”

Section: Introductionmentioning

confidence: 99%

Relay Selection Considering Successive Packets Transmission in Cooperative Communication Networks

Zhou

Wang

2015

CIT

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Relay selection has been regarded as an effective method to improve the performance of cooperative communication system. However, frequent operation of relay selection can bring enormous control message overhead and thereby decrease the performance of cooperative communication. To reduce the relay selection frequency, in this paper, we propose a relay selection scheme to choose the best relay with considering successive packets transmission. In this scheme, according to the length of data packet, data transmission rate and the estimated channel state information (CSI), the best relay is selected to maximize the number of successive packets transmission under the condition that the given symbol-error-rate (SER) is kept. Finally, numerical results show that the proposed relay selection scheme can support the operation of successive packets transmission in cooperative wireless networks and that the maximum number of successive packets transmission is affected by the different network parameters, i.e., data transmission rate, packet length and Doppler frequency at one relay node.

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Link-Utility-Based Cooperative MAC Protocol for Wireless Multi-Hop Networks

Cited by 44 publications

References 30 publications

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

A Store-and-Forward Cooperative MAC for Wireless Ad Hoc Networks

Relay Selection Considering Successive Packets Transmission in Cooperative Communication Networks

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