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Channel knowledge map (CKM) is a promising technique that enables environment-aware wireless networks by utilizing location-specific channel prior information to improve communication and sensing performance. A fundamental problem for CKM…

Signal Processing · Electrical Eng. & Systems 2024-12-20 Shen Fu , Zijian Wu , Di Wu , Yong Zeng

The ability to construct channel knowledge map (CKM) with high precision is essential for environment awareness in 6G wireless systems. However, most existing CKM construction methods formulate the task as an image super-resolution or…

Signal Processing · Electrical Eng. & Systems 2025-12-15 Yunzhe Zhu , Xuewen Liao , Zhenzhen Gao , Linzhou Zeng , Yong Zeng

Unlike wired networks, the capacity of a wireless network is interference limited due to the broadcast nature of wireless medium. Some multicast wireless network protocols do not consider channel assignment issue, that they cause…

Networking and Internet Architecture · Computer Science 2012-10-12 Abbas Nargesi , Mehdi Ghasemi

Management is a complex task in today's heterogeneous and large scale networks like Cloud, IoT, vehicular and MPLS networks. Likewise, researchers and developers envision the use of artificial intelligence techniques to create cognitive and…

Networking and Internet Architecture · Computer Science 2019-04-03 Eliseu M. Oliveira , Rafael Freitas Reale , Joberto S. B. Martins

Multi cast communication is a key technology for wireless mesh networks. Multicast provides efficient data distribution among a group of nodes, Generally sensor networks and MANETs uses multicast algorithms which are designed to be energy…

Networking and Internet Architecture · Computer Science 2012-04-24 S. Sobana , S. Krishna Prabha

Spectrum management has been identified as a crucial step towards enabling the technology of a cognitive radio network (CRN). Most of the current works dealing with spectrum management in the CRN focus on a single task of the problem, e.g.,…

Information Theory · Computer Science 2011-02-11 Mingyi Hong , Alfredo Garcia , Stephen Wilson

Due to the exponential increase in wireless devices and a diversification of network services, unprecedented challenges, such as managing heterogeneous data traffic and massive access demands, have arisen in next-generation wireless…

Networking and Internet Architecture · Computer Science 2024-12-17 Zhizhen Li , Xuanhao Luo , Mingzhe Chen , Chenhan Xu , Shiwen Mao , Yuchen Liu

In this paper, we propose a semi-distributed cooperative spectrum sen sing (SDCSS) and channel access framework for multi-channel cognitive radio networks (CRNs). In particular, we c onsider a SDCSS scheme where secondary users (SUs)…

Networking and Internet Architecture · Computer Science 2014-06-19 Le Thanh Tan , Long Bao Le

In this paper, we investigate the joint optimal sensing and distributed Medium Access Control (MAC) protocol design problem for cognitive radio (CR) networks. We consider both scenarios with single and multiple channels. For each scenario,…

Information Theory · Computer Science 2014-04-08 Le Thanh Tan , Long Bao Le

Cognitive radio (CR) is found to be an emerging key for efficient spectrum utilization. In this paper, spectrum sharing among service providers with the help of cognitive radio has been investigated. The technique of spectrum sharing among…

Networking and Internet Architecture · Computer Science 2013-01-08 R. Kaniezhil , Dr. C. Chandrasekar

This letter investigates a channel assignment problem in uplink wireless communication systems. Our goal is to maximize the sum rate of all users subject to integer channel assignment constraints. A convex optimization based algorithm is…

Signal Processing · Electrical Eng. & Systems 2020-01-14 Guangyu Jia , Zhaohui Yang , Hak-Keung Lam , Jianfeng Shi , Mohammad Shikh-Bahaei

This paper proposes prediction-and-sensing based spectrum sharing, a new spectrum-sharing model for cognitive radio networks, with a time structure for each resource block divided into a spectrum prediction-and-sensing phase and a data…

Information Theory · Computer Science 2017-07-25 Van-Dinh Nguyen , Oh-Soon Shin

The construction of channel gain map (CGM) is essential for realizing environment-aware wireless communications expected in 6G, for which a fundamental problem is how to predict the channel gains at unknown locations effectively by a finite…

Networking and Internet Architecture · Computer Science 2025-02-25 Jiayi Chen , Ruifeng Gao , Jue Wang , Shu Sun , Yi Wu

Wireless Networks rendering varied services has not only become the order of the day but the demand of a large pool of customers as well. Thus, security of wireless networks has become a very essential design criterion. This paper describes…

Cryptography and Security · Computer Science 2010-04-28 S. C. Lingareddy , Dr B Stephen Charles , Dr Vinaya Babu , Kashyap Dhruve

Wireless standards (e.g., IEEE 802.11af and 802.22) have been developed for enabling opportunistic access in TV white space (TVWS) using cognitive radio (CR) technology. When heterogeneous CR networks that are based on different wireless…

Networking and Internet Architecture · Computer Science 2019-02-19 Kaigui Bian , Lin Chen , Yuanxing Zhang , Jung-Min Jerr Park , Xiaojiang Du , Xiaoming Li

Heterogeneous small cell network has attracted much attention to satisfy users' explosive data traffic requirements. Heterogeneous cloud small cell network (HCSNet), which combines cloud computing and heterogeneous small cell network, will…

Information Theory · Computer Science 2016-11-17 Haijun Zhang , Chunxiao Jiang , Julian Cheng , Victor C. M. Leung

Much of the current theory of networked control systems uses simple point-to-point communication models as an abstraction of the underlying network. As a result, the controller has very limited information on the network conditions and…

Systems and Control · Computer Science 2011-03-29 Phoebus Chen , Chithrupa Ramesh , Karl H. Johansson

Wireless Mesh Network (WMN) is surely one of the prominent networks in the modern era which is widely used in numerous evolving applications, viz. broadband home networking (BHN), community and neighbourhood networks (CNN), coordinated…

Networking and Internet Architecture · Computer Science 2023-04-26 Ankita Singh , Sudhakar Singh , Shiv Prakash

In this paper, we investigate the joint cooperative spectrum sensing and access design problem for multi-channel cognitive radio networks. A general heterogeneous setting is considered where the probabilities that different channels are…

Networking and Internet Architecture · Computer Science 2014-04-09 Le Thanh Tan , Long Bao Le

In this paper, we look into the problem of channel assignment in multi-channel multi-radio wireless mesh networks. We propose a new learning automata based channel assignment scheme that adaptively improve network overall throughput by…

Networking and Internet Architecture · Computer Science 2014-05-15 Ziaeddin Beheshtifard , Mohammad Reza Meybodi