Collision decoding and reporting: A new collision resolution approach using full-duplex radio in WLANs

Ahn, Hyeongtae; Jo, Hyeongwoo; Park, Young Deok; Jeong, Soo‐Hwan; Suh, Young-Joo

doi:10.1016/j.adhoc.2020.102238

Cited by 6 publications

(9 citation statements)

References 19 publications

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“…Therefore, there is no contention period, and thus, there is no collision among the user terminals and the AP for channel access. Ahn et al 34 . proposed a novel collision resolution method called collision decoding and reporting (CDR) suitable for the FD radio.…”

Section: Related Workmentioning

confidence: 99%

“…Therefore, there is no contention period, and thus, there is no collision among the user terminals and the AP for channel access. Ahn et al 34 proposed a novel collision resolution method called collision decoding and reporting (CDR) suitable for the FD radio. The CDR method resolves collisions through cooperation among collision stations and reduces the competition overhead instead of reducing the wasted channel time due to collisions.…”

Section: Existing Solutionsmentioning

confidence: 99%

See 1 more Smart Citation

Toward an efficient and coordinated control of full‐duplex radio communications in high‐efficiency wireless local area networks

Hocini

Yazid

Ksentini

2022

Int J Communication

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SummaryThe full‐duplex radio transmission technique is a prominent feature in the physical layer of the new IEEE 802.11ax standard for promoting the use of WiFi 6, also called HEW (High‐Efficiency Wireless local area network). Based on this unprecedented technique, a WiFi transmitter has the ability to transmit and receive data simultaneously using the same radio channel, thereby doubling the network capacity and spectral efficiency. However, many challenges related to the MAC (medium access control) layer (including full‐duplex configurations, hidden relationship, unbalance between data streams, and overhead) should be addressed to fully benefit from this technique. The aim of this paper is to design, implement, and assess a new Full‐Duplex MAC protocol by meeting the inherent challenges in controlling full‐duplex radio communications. Accordingly, an efficient and coordinated control protocol is proposed, whose basic principle is to exchange all relevant control information and transmit data without loss or unnecessary delay. The performance evaluation of the proposed protocol demonstrates that the results obtained are the best, especially when the network is dense or the traffic from the access point is heavy.

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Section: Related Workmentioning

confidence: 99%

Section: Existing Solutionsmentioning

confidence: 99%

Toward an efficient and coordinated control of full‐duplex radio communications in high‐efficiency wireless local area networks

Hocini

Yazid

Ksentini

2022

Int J Communication

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“…A successful packet transmission starts with backoff stage 0, where the node already has FD-RTS in its queue upon waiting for the time, defined in (2). When an unsuccessful transmission occurs at the backoff stage x − 1, the backoff stage increases and the new backoff value is uniformly chosen in the range [0, CW x ], as described in (5).…”

Section: ) Control Packet Transmission Probabilitymentioning

confidence: 99%

“…However, these transceivers have fundamental design constraints and reduce potential network throughput. The modern communication systems overcome HD shortcomings by employing full-duplex (FD) wireless transmission opportunities over a single channel [1], [2].…”

Section: Introductionmentioning

confidence: 99%

CFFD-MAC: A Hybrid MAC for Collision Free Full-Duplex Communication in Wireless Ad-Hoc Networks

et al. 2021

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Infrastructure-less (sometimes known as ad-hoc) networking paradigm is very appealing and potentially shaping its future into almost all emerging networks (i.e., IoT, wireless sensor networks, vehicular ad-hoc networks, emergency, and tactical radio networks, etc.). However, when conventional networking protocols are used, such networks often perform poorly, mainly because of interference within the network and limited network throughput. Recent advancements in wireless communications have enabled full-duplex (FD) operation by suppressing self-interference, which can theoretically double the network throughput. However, conventional medium access control (MAC) protocols like carrier-sense multiple access with collision avoidance (CSMA/CA) favor half-duplex (HD) operation and fail to benefit from FD transmission opportunities. This article proposes a novel hybrid MAC protocol for full-duplex ad-hoc networks. The proposed MAC combines time division multiple access (TDMA) and IEEE 802.11 distributed coordination function (DCF) strengths in chains of time-slotted contention-based control frames and collision-free data frames. The aim is to fully utilize FD transmission opportunities to increase network throughput. The proposed protocol modifies request-to-send (RTS) and clear-to-send (CTS) frames in IEEE 802.11 DCF MAC to form FD-RTS/CTS frames. These frames are used to enable collision-free FD communications among neighbors. The proposed scheme mitigates conventional MAC issues like hiddennode problem (HNP) and exposed-node problem (ENP). It also allows concurrent FD data transmissions in a collision-free manner. The model is generic and can be applied to any ad-hoc wireless network. In this article, the design is applied to a single channel ad-hoc network with FD transceivers. We compared the proposed design with IEEE 802.11 CSMA/CA protocol with both HD and FD transceivers. The simulation results show a 30% gain in throughput, reduced latency, and fairness among participating wireless nodes.INDEX TERMS Ad-hoc networks, Collision-free, Full-duplex, Medium-access-control, RTS/CTS, Wireless networks.

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“…Wireless resources are dynamically coordinated in the entire network through the AP 15 . A full‐duplex MAC protocol is aim at the solution of data transmission collisions between nodes and AP 16 . The hidden nodes which have collision are summarized to the AP through collision decoding and reporting.…”

Section: Related Workmentioning

confidence: 99%

A fairness‐aware distributed dual‐hop heterogeneous half and full‐duplex link scheduling for 6G network

Guan

Yang

et al. 2021

Trans Emerging Tel Tech

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Current network technologies evolve toward the sixth generation of mobile communications (6G) systems. To achieve the performance requirements of high data rate, low latency, and massive connection, full-duplex (FD) wireless communication is one possible solution to provide high throughput and channel utilization. However, it is difficult to do so for legacy communication nodes. A distributed fairness-aware full-duplex dual-hop link scheduling algorithm, named weighted full duplex (W-FD), is proposed to achieve the efficient node selection and dynamic relay probing. The scheduling weight that considered traffic load, mutual interference, and response interval is employed to ensure link load balance. A node with a higher scheduling weight in the neighborhood is selected as the link establishment object to build a full-duplex link. Better than conventional half-duplex(HD) link scheduling, W-FD reduces link scheduling interval and ensures the access opportunities for legacy nodes. Simulation result shows that throughput and delay performance are improved. Compared with the existed full-duplex link scheduling, W-FD could better reflect the fairness of scheduling in multi-nodes and asymmetric-packets networks, and ensure the throughput and delay performance.

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Collision decoding and reporting: A new collision resolution approach using full-duplex radio in WLANs

Cited by 6 publications

References 19 publications

Toward an efficient and coordinated control of full‐duplex radio communications in high‐efficiency wireless local area networks

Toward an efficient and coordinated control of full‐duplex radio communications in high‐efficiency wireless local area networks

CFFD-MAC: A Hybrid MAC for Collision Free Full-Duplex Communication in Wireless Ad-Hoc Networks

A fairness‐aware distributed dual‐hop heterogeneous half and full‐duplex link scheduling for 6G network

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