Cooperative MAC protocol using active relays for multi-rate WLANs

Oh, Chang-Yeong; Lee, Tae-Jin

doi:10.1109/jcn.2011.6112303

Cited by 12 publications

(10 citation statements)

References 16 publications

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“…Hyogon and others in [6] set the CW m in (Contention Window) for each transmission such that the CW m in is inversely proportional to the supported bit rate. To increase network capacity and throughput, several studies (e.g., [7][8][9][10][11][12][13][14][15][16][17]) have proposed different cooperative MAC protocols. In [7], the authors introduced the first cooperative MAC protocol ''CoopMAC".…”

Section: Related Workmentioning

confidence: 99%

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Cooperative packet-forwarding mechanism for throughput improvement in multi-channel wireless networks

Khasawneh

Badarneh

Mesleh

2015

Computers & Electrical Engineering

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Section: Related Workmentioning

confidence: 99%

“…The low rate sender station uses the path through the high rate station to forward data to the AP. Active relay-based cooperative medium access control (AR-CMAC) protocol was proposed in [12]. This protocol used in any multirate WLANs that are based on CSMA/CA with RTS/CTS (e.g., IEEE 802.11a/b/g).…”

Section: Related Workmentioning

confidence: 99%

Cooperative packet-forwarding mechanism for throughput improvement in multi-channel wireless networks

Khasawneh

Badarneh

Mesleh

2015

Computers & Electrical Engineering

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“…Secondly, the probability that j nodes having the ability to assist the source is calculated as (4) and the probability that the network contains k(k ≤ n − 1) high data-rate nodes is calculated as (5).…”

Section: B the Probability Of Back-off Suspension State(bos)mentioning

confidence: 99%

“…In [4] the relay will be asked to forward packets when information is to exchange between the source and destination. In [5] AR-CMAC was proposed, in which source need not to choose the relay, neighbor nodes must contend for the channel by themselves to be a legal relay. CL-MAC (Cooperative Low power MAC) proposed in [6] combines LPL(Low Power Listening) and cooperative technology so as to save more energy and use the radio resource effectively.…”

Section: Introductionmentioning

confidence: 99%

CARD-BS: Consider of Back-off Suspension in CARD for WLAN

Liu

et al. 2013

2013 IEEE/CIC International Conference on Communications in China (ICCC)

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Wireless multi-media service and real-time applications are becoming increasingly popular in our daily life. These services put forward more requirements for quality of service (QoS). Cooperative technology, which takes more advantage of wireless channel resource, can improve the quality of communications. Among the cooperative technologies CARD (Cooperative Access with Relay's Data) is one of the most excellent algorithms, which is characterized by encouragement mechanism and inherited back-off. However these characteristics and channel busy/idle state are not exhaustively considered in the analysis of back-off process. In order to make a more accurate estimation of CARD performance, Back-off Suspension State (BSS) and Channel State Markov Sub-Chain (CSMSC) model are introduced to the analysis model. Based on the modified model CARD-BS focused on Back-off Suspension is proposed, BSS and CSMSC are used to analyze the influence of above characteristics and channel busy/idle state on back-off process respectively. The numerical results of CARD-BS show that the performance of CARD is underestimated, especially in the terms of collision probability and average service delay. Under CARD-BS, the collision probability and average service delay are both improved.Index Terms-cooperative technology, back-off suspension, average service delay, throughput.

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“…Cooperative communication techniques offer a solution to these challenges [1,2]. Such techniques use the broadcast nature of wireless communication to engage some nodes within the communication range of the sender to act as helpers in assisting the sender to transmit a data packet to its recipient, thereby effectively combating signal fading and improving spectrum efficiency and communication reliability [3,4]. These techniques are gradually being used in typical wireless networks, such as next-generation networks, wireless local area networks (WLANs), wireless sensor networks, and mobile ad hoc networks.…”

Section: Introductionmentioning

confidence: 99%

A rapid cooperation-differentiated medium access control protocol with packet piggyback for multihop wireless networks

Liu

et al. 2013

J Wireless Com Network

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To improve the efficiency of node cooperation and multiple access performance in multihop wireless networks, a rapid cooperation-differentiated medium access control (MAC) protocol is proposed. In the protocol, the helper selection process is divided into a priority differentiation phase and contention resolution phase for helpers with the same priority. A higher priority helper can choose an earlier minislot in the priority differentiation phase to send a busy tone. As a result, the protocol promptly selects all the highest priority helpers. The contention resolution phase for the same priority helpers can use any existing collision resolution scheme, such as the k-round elimination contention scheme. Helpers sending a busy tone first can proceed to the next round, while others, sensing the busy tone, subsequently withdraw from contention. Therefore, a unique optimal helper is selected from the highest priority helpers with high probability. A packet piggyback mechanism is also adopted, which allows a high data rate helper with its own data packets, to transmit these to their recipient without reservation. This significantly decreases the reservation overhead and effectively improves cooperation efficiency and channel utilization. Simulation results show that the maximum throughput of the proposed protocol is 39.6% and 9.6% higher than those of the cooperative MAC-aggregation (CoopMACA) and instantaneous relay-based cooperative MAC protocols, respectively, in a wireless local area network environment, and 40.8% and 31.9% higher, respectively, in an ad hoc network environment.

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Cooperative MAC protocol using active relays for multi-rate WLANs

Cited by 12 publications

References 16 publications

Cooperative packet-forwarding mechanism for throughput improvement in multi-channel wireless networks

Cooperative packet-forwarding mechanism for throughput improvement in multi-channel wireless networks

CARD-BS: Consider of Back-off Suspension in CARD for WLAN

A rapid cooperation-differentiated medium access control protocol with packet piggyback for multihop wireless networks

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