CollFree: Exploiting Full-Duplex Capabilities in WiFi Contention for Enhanced Throughput Efficiency

doi:10.1109/JSAC.2025.3584431

CSpace

	CollFree: Exploiting Full-Duplex Capabilities in WiFi Contention for Enhanced Throughput Efficiency
	Zhao, Qinglin 1; Xu, Fangxin 2; Feng, Li 1; Zhou, MengChu 3; Shen, Meng 4; Zhang, Peiyun 5,6; Sun, Yi 7
	2025-11-01
发表期刊	IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
ISSN	0733-8716
卷号	43 期号:11 页码:3875-3888
摘要	The widespread adoption of WiFi has made throughput efficiency a critical concern in wireless networks. While Full-Duplex (FD) technology promises to double network capacity by enabling simultaneous transmission and reception, existing FD-WiFi designs focus on the data transmission phase, leaving the fundamental inefficiencies in channel contention unaddressed. This paper presents CollFree, a novel WiFi protocol that exploits FD capabilities during both contention and data transmission phases. At its core, CollFree introduces a Slotwise Arbitration (SA) mechanism that enables each node to simultaneously transmit contention signals and sense channel status in each contention slot. This dual-mode operation significantly reduces contention time and facilitates collision- free data transmissions through a unique winner-determination process. We then develop theoretical models to analyze CollFree's contention performance and throughput efficiency under both perfect and imperfect Clear Channel Assessment (CCA) conditions, providing guidelines for parameter optimization in practical deployments. Extensive simulations demonstrate that CollFree enhances throughput efficiency by over 20% compared to state-of-the-art FD-WiFi systems while maintaining distributed control and compatibility with current WiFi standards. These results suggest that it represents a significant step toward realizing the full potential of FD technology in next-generation WiFi networks.
关键词	Wireless fidelity Protocols Throughput Data communication Time-domain analysis Electronic mail Sensors Charge coupled devices Analytical models Uplink Wireless full-duplex slot clear channel assessment contention mechanism protocol design
DOI	10.1109/JSAC.2025.3584431
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:001616171500002
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/42982
专题	中国科学院计算技术研究所
通讯作者	Zhou, MengChu
作者单位	1.Macau Univ Sci & Technol, Sch Comp Sci & Engn, Taipa, Macau, Peoples R China 2.Shenzhen Longsailing Semicond Co Ltd, Shenzhen 518000, Peoples R China 3.Zhejiang Gongshang Univ, Sch Informat & Elect Engn, Hangzhou 310018, Peoples R China 4.Beijing Inst Technol, Sch Cyberspace Sci & Technol, Beijing 100081, Peoples R China 5.Nanjing Univ Informat Sci & Technol, Engn Res Ctr Digital Forens, Minist Educ, Nanjing 210044, Peoples R China 6.Nanjing Univ Informat Sci & Technol, Sch Comp Sci, Nanjing 210044, Peoples R China 7.Chinese Acad Sci, Inst Comp Technol, Beijing 100045, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Qinglin,Xu, Fangxin,Feng, Li,et al. CollFree: Exploiting Full-Duplex Capabilities in WiFi Contention for Enhanced Throughput Efficiency[J]. IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,2025,43(11):3875-3888.
APA	Zhao, Qinglin.,Xu, Fangxin.,Feng, Li.,Zhou, MengChu.,Shen, Meng.,...&Sun, Yi.(2025).CollFree: Exploiting Full-Duplex Capabilities in WiFi Contention for Enhanced Throughput Efficiency.IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,43(11),3875-3888.
MLA	Zhao, Qinglin,et al."CollFree: Exploiting Full-Duplex Capabilities in WiFi Contention for Enhanced Throughput Efficiency".IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 43.11(2025):3875-3888.