Predicting Large-Scale WLAN Traffic via Granger Causality Based Bayesian Network by Hao Wang, Yunfei Lv, Yuanbao Chen, Yunfei Peng

“…Granger causality existed between traffic at different access points of large-scale wireless LANs was discovered.The Granger causality illustrates that the historical traffic of access points that exist causality within target access points help predict the future of target access points with better accuracy than when considering information from the past of target access point alone.Bayesian network to model the causal relationship between access points and adopted a Gaussian mixture model（GMM）was used，as well as a weighted combination of several normal distribution functions in order to approximate the joint probability distribution in Bayesian networks.Finally，the traffic data in large-scale wireless LANs was imported，having hundreds of access points，to verify the accuracy of the proposed method，and a processing flow of analysis，modeling and prediction of traffic flow data was established.…”
Get full text

Comparison Study of Resource Allocation Strategies for OFDM Multimedia Networks by Cédric Guéguen, Sébastien Baey

“…Advanced MAC scheduling schemes provide efficient support of multimedia services in multiuser OFDM wireless networks. Designed in a cross layer approach, they opportunistically consider the channel state and are well adapted to the wireless multipath fading environment. …”
Get full text

Home Wi-Fi mesh networking technology by Longjie XU, Ning GUO, Tao GUO, Jianting HAN

“…Wi-Fi mesh is a kind of suitable for large or complex home wireless self-organizing network solution.It can provide users with full coverage,self-handoff and easy installation of high-quality wireless network.Wi-Fi mesh has many advantages,such as self-organizing,self-management,self-repair and self-balance.But the existing Wi-Fi mesh product implementation scheme is not uniform,complex,high terminal capability requirement and unable to interoperate.The realization of multi AP collaborative work in home network was firstly discussed,then the main current technology development of Wi-Fi mesh was analyzed,and the technical scheme and comparative analysis of home Wi-Fi mesh was focused on.Then,aiming at home application scenario,a Wi-Fi mesh technology implementation scheme for operators was presented,which was modularized,easy to realize,with low terminal capability requirement and good interoperability.…”
Get full text

Review of Slice Resource Management Technology in Space-Integrated-Ground Access Network by Ning HUI, Qian SUN, Yuanyuan WANG, Zongshuai ZHANG, Lin TIAN, Jing ZHANG, Xiao WEI

“…With the explosive growth of diff erentiated services, it is urgent to manage wireless spectrum and computing resources on demand dynamically in the sliced access network (RAN) of the space-integrated-ground network.Resulting from that, refi ned and guaranteed qualities of services are achieved.Thus, it is necessary to study the dynamic management of spectrum and computing resources in the sliced RAN of space-air-ground integrated networks.The resource management technologies in sliced RAN of the space-integrated-ground were discussed.The current research status of resource management in the space-integratedground access network was summarized.The future demands of resource management in sliced RAN of the space-integratedground system were analyzed, included the high isolation of wireless spectrum resource, the collaboration of computing resources among space and ground parts, and the real-time heterogeneous resource management in complex sliced RAN of space-air-ground integrated networks.The corresponding key technologies of the three demands were provided.…”
Get full text

Research on Energy Efficiency and Resource Optimized Hyper-Cellular Mobile Communication System by Zhisheng Niu, Jie Gong, Sheng Zhou

“…The development of wireless communication networks is now facing severe challenges from limited spectrum resources and stringent energy consumption constraints, which calls for system level theories and methods to efficiently utilizethe spectrum and energy. …”
Get full text

An Unusual Case of Obscure Gastrointestinal Bleeding in a Patient with Coeliac Disease by M. Gwiggner, P. Patel

“…Upper and lower gastrointestinal endoscopy did not reveal a source of bleeding, but an abdominal CT scan detected abnormal lymphadenopathy and a wireless capsule endoscopy diagnosed a jejunal tumour, which was surgically removed. …”
Get full text

Base station sleep mechanism based on power consumption and energy cost balance by Dongsheng HAN, Bing ZHENG, Zhixiong CHEN

“…Deploying dense network in 5G system increases the number of nodes,which leads to a sharp increase in power consumption of wireless communication system,aggravates the economic burden of mobile network operator and exacerbates the emission of CO₂.Therefore,considering the number of candidate base station (BS) group and the relative position of the BS supplied by new energy,a comprehensive power consumption model in wireless communication system was investigated in terms of the power consumption and economical level.A base station sleep algorithm based on power consumption and energy cost balance was proposed to achieve a tradeoff between them,which selected candidate groups according to the corresponding power consumption and then determined the active group by choosing the cheapest ones.Simulation results show that the proposed algorithm can significantly reduce energy cost of communication bases system although it leads to a negligible increase in power consumption.…”
Get full text

A Game Theory Based Strategy for Reducing Energy Consumption in Cognitive WSN by Elena Romero, Javier Blesa, Alvaro Araujo, Octavio Nieto-Taladriz

“…Wireless sensor networks (WSNs) are one of the most important users of wireless communication technologies in the coming years and some challenges in this area must be addressed for their complete development. …”
Get full text

AMC based IP microwave technology by Weihe DONG, Xiaokun LI, Hongxu CHEN, Siyan ZHANG, Yiran SUN, Chuanyue YU

“…IP microwave technology is a new transmission technology,which uses IP technology to transmit data signals in the microwave field.It has the advantages of fast deployment rate,flexible installation,convenient transport and efficient data transmission,and has become a common ground wireless transmission system with large capacity.An environmental model of microwave transmission was proposed and discussed.The model used IP network as the return transmission,which was helpful for the development of general network of wireless access system.The prototype design of UHF band microwave/Internet protocol (IP) network interface was carried out,and the conversion of the three major functional modules in the network were described,to realize the broadband integrated services digital transmissions.The results show that the ground transmission signal (DTMB) can efficiently transmit on the IP network,and the monitoring/truncation of the microwave signal can significantly reduce the network throughput as needed.…”
Get full text

Design and Implementation of a Digital Environmental Monitoring System. by Nuwagaba, Alfred

“…Given that GSM based technology is widely spread across the world, has quality channeling and signaling, this makes it a preferred option for use in this project in comparison to other wireless technologies. This project focusses on the development of a simple and low-cost system based on embedded and GSM wireless technology. …”
Get full text

Gated Spatial–Temporal Merged Transformer Inspired by Multimask and Dual Branch for Traffic Forecasting by Yongpeng Yang, Zhenzhen Yang, Zhen Yang

Get full text

A Novel Authentication Management for the Data Security of Smart Grid by Imtiaz Parvez, Maryamossadat Aghili, Hugo Riggs, Aditya Sundararajan, Arif I. Sarwat, Anurag K. Srivastava

“…Bidirectional wireless communication is employed in various smart grid components such as smart meters and control and monitoring applications where security is vital. …”
Get full text

A New Geometry of Multi-band MIMO Antenna for 5G and 6G Systems by Karrar Shakir Muttair, Oras Ahmed Shareef, Hazeem Baqir Taher, Faiz Arith

“…This makes it a superior choice for modern wireless devices catering to 5G and 6G networks. …”
Get full text

Improved Reception of In-Body Signals by Means of a Wearable Multi-Antenna System by Thijs Castel, Patrick Van Torre, Emmeric Tanghe, Sam Agneessens, Günter Vermeeren, Wout Joseph, Hendrik Rogier

“…High data-rate wireless communication for in-body human implants is mainly performed in the 402–405 MHz Medical Implant Communication System band and the 2.45 GHz Industrial, Scientific and Medical band. …”
Get full text

Cross-Layer Framework for Multiuser Real Time H.264/AVC Video Encoding and Transmission over Block Fading MIMO Channels Using Outage Probability by Slavche Pejoski, Venceslav Kafedziski

“…This framework allows for adaptation to the statistics of the wireless channel and to the available resources in the system and utilization of the multiuser diversity of the transmitted video sequences. …”
Get full text

Schedule-aware power management for energy-efficiency improvement in IEEE 802.11u WLAN by Di ZHANG

“…A mobile terminal supporting the IEEE 802.11u standard can automatically access a wireless local area network within the coverage of a network service provided by a wireless local area network.Aiming at the characteristics of IEEE 802.11u WLAN,a time series sensing based PSM (S-PSM) scheme was proposed.The transmission sequence information was broadcasted using a generic advertisement service (GAS) defined in the IEEE 802.11u standard,and all terminals controlled their own operating states according to the sequence information.In order to reduce the collision probability of the contention channel,a response contention window was introduced.When there was no data packet in the access point (AP),the AP broadcasted the GAS frame and activated the idle timer.All terminals went to sleep until the idle timer expires.The simulation results show that compared with the proposed traditional PSM,the scheme can significantly reduce power consumption and improve terminal energy-efficiency.…”
Get full text

Performance Analysis of Ultra-Wideband Channel for Short-Range Monopulse Radar at Ka-Band by Naohiko Iwakiri, Natsuki Hashimoto, Takehiko Kobayashi

Get full text

WLAN Technologies for Audio Delivery by Nicolas-Alexander Tatlas, Andreas Floros, Thomas Zarouchas, John Mourjopoulos

“…Audio delivery and reproduction for home or professional applications may greatly benefit from the adoption of digital wireless local area network (WLAN) technologies. The most challenging aspect of such integration relates the synchronized and robust real-time streaming of multiple audio channels to multipoint receivers, for example, wireless active speakers. …”
Get full text

Performance analysis of random access network with post-backoff by Chaolun BU, Yang XIAO, Tong YE, Peng WU, Xiaojian ZHANG, Junmin WU

“…Performance analysis of random access network protocol in wireless local area network is a research hotspot in recent years，and the existing models have yet to describe post-backoff mechanism effectively. …”
Get full text

QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN by Dapeng WU, Xue LI, Hongxia LI

“…The quality of user experience suffers from performance deterioration dramatically due to the explosively growing data traffic.To improve the poor performance of cell-edge users and heavy-load cell users,which caused by dense network and load imbalance respectively,an QoE-aware video cooperative caching and transmission mechanism in cloud radio access network was proposed.Cooperative gain-aware virtual passive optical network was established to provide cooperative caching and transmission for video streaming by adopting collaborative approach in optical domain and wireless domain.Furthermore,user experience for video streaming,bandwidth provisioning and caching strategy were jointly optimized to improve QoE,which utilized the methods of dynamic caching in optical domain and buffer level-aware bandwidth configuration in wireless domain.The results show that the proposed mechanism enhances the quality of user experience and effectively improves the cache hit rate.…”
Get full text