scholarly journals Dynamic Location Modelling in 3D Beamforming for 5G Mobile Communications

2015 ◽  
Vol 4 (1) ◽  
pp. 43-50
Author(s):  
Sasi A ◽  
Santhiya P
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Smart Antenna ◽  
Low Cost ◽  
Reliable Communication ◽  
Dynamic Location ◽  
Limited Frequency ◽  
3D Beamforming ◽  
5G Mobile Communications

Mobile communication system is designed to provide reliable communication with more number of services and with low cost among multiple users. Due to limited frequency spectrum and resources, mobile communication requires more development in case of both establishing communication and maintenance in service quality. To fulfill these requirements, 5G mobile communication is being developed to provide high quality reliable communication and quality of service, by using beamforming model. As the trend of next generation mobile communication, 3D directional transmission is considered to give enhanced coverage model and reusability of frequency. Phase arrayed antenna is used in this beamforming model to give orthogonal communication among users. In this paper, a new modeling of beamforming is applied to give a new dimension by considering altitude with potential field strategy. Here phase arrayed antenna is replaced by 3-D smart antenna to improve the performance of 5G mobile communications. Performance evaluation outcomes 3D beamforming leads 2D beamforming in terms of communication delay, and uplink downlink throughput.

scholarly journals System Coverage and Capacity Analysis on Millimeter-Wave Band for 5G Mobile Communication Systems with Massive Antenna Structure

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Jun Suk Kim ◽  
Jae Sheung Shin ◽  
Sung-Min Oh ◽  
Ae-Soon Park ◽  
Min Young Chung
Keyword(s):  
Millimeter Wave ◽  
Mobile Communication ◽  
Mobile Communications ◽  
Communication Systems ◽  
Wave Band ◽  
Mobile Communication Systems ◽  
Antenna Structure ◽  
Millimeter Wave Band ◽  
5G Mobile Communications ◽  
Central Network

The use of a millimeter-wave band defined as a 30–300 GHz range is significant element for improving performance of 5th generation (5G) mobile communication systems. However, since the millimeter-wave signal has peculiar propagation characteristics especially toward non-line-of-sight regions, the system architecture and antenna structure for 5G mobile communications should be designed to overcome these propagation limitations. For realization of the 5G mobile communications, electronics and telecommunications research institute (ETRI) is developing central network applying various massive antenna structures with beamforming. In this paper, we have introduced the central network and evaluated the system coverage and capacity through C++ language-based simulations with real geospatial information.

scholarly journals Dual-/Tri-Wideband Bandpass Filter with High Selectivity and Adjustable Passband for 5G Mid-Band Mobile Communications

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 205 ◽  
Author(s):  
Zhanyong Hou ◽  
Chengguo Liu ◽  
Bin Zhang ◽  
Rongguo Song ◽  
Zhipeng Wu ◽  
...  
Keyword(s):  
Mobile Communications ◽  
Communication Systems ◽  
High Speed ◽  
Bandpass Filter ◽  
Low Cost ◽  
Open Loop ◽  
Structural Deformation ◽  
Compact Structure ◽  
Compact Size ◽  
5G Mobile Communications

The design and implementation of the filters for the fifth-generation (5G) mobile communication systems are challengeable due to the demands of high integration, low-cost, and high-speed data transmission. In this paper, a dual-wideband bandpass filter (BPF) and a tri-wideband BPF for 5G mobile communications are proposed. The dual-wideband BPF consists of two folded open-loop stepped-impedance resonators (FOLSIRs), and the tri-wideband BPF is designed by placing a pair of folded uniform impedance resonator inside the dual-wideband BPF with little increase in the physical size of the filter. By employing a novel structural deformation of a stepped-impedance resonator, the FOLSIR is achieved with a more compact structure, a controllable transmission zero, and an adjustable resonant frequency. The measurement results show that the working bands of the two filters are 1.98–2.28/3.27–3.66 GHz and 2.035–2.305/3.31–3.71/4.54–5.18 GHz, respectively, which are consistent with the full-wave EM simulation results. The implemented filters have a compact size and the results show low loss, good out-of-band rejection, and wide passbands covering sub-6 GHz bands of 5G mobile communications and a commonly used spectrum.

scholarly journals Resource Sharing for Granted & Grant-free Demands in 5G for Non-orthogonal Multiple Access

2019 ◽  
Vol 8 (4S3) ◽  
pp. 454-456
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Resource Sharing ◽  
Multiple Access ◽  
Network Capacity ◽  
Mobile Internet ◽  
Common People ◽  
Present Generation ◽  
Random Approach

In the present days we observed a drastic change in the usage of mobile internet as well as advancements in Internet of things. With this advancements in mobile communications as well as IOT, the present generation mobile communication i.e. 4G technology is considered to be not sufficient to reach to the needs of common people, therefore the upcoming generation 5G needs in a frame way to face to ultra huge network capacity & massive wireless connectivity. A major hopeful technology which has the capacity for enabling different user equipments, sharing interweaving wireless resources in 5G is named as Non Orthogonal multiple Access (NOMA) technology, where most of the industrialists & academicians are doing research in recent years To establish good Quality of Service (QoS) & also to obtain low access latency as well as overhead signaling NOMA must compulsorily support two kinds of approaches: i) Scheduling approach ii)Random approach. The major challenge we observe in these two kinds of approach is how efficiently we obtain simultaneous support. Here we are proposing an approach for combining the granted & grant free demands which works on the principle of allowing the approaches to share the same resources simultaneously. We are proposing heuristic resource algorithm which improve capacity of network & user connectivity of NOMA in 5G networking.

Policy Question: Is Huawei Infrastructure a Threat to Western National Security?

2021 ◽  
pp. 145-153
Author(s):  
Kieron O’Hara
Keyword(s):  
National Security ◽  
Mobile Communications ◽  
Chinese Government ◽  
Difficult Situation ◽  
Major Flare ◽  
Belt And Road ◽  
5G Mobile Communications ◽  
Trump Administration

One major flare-up between the Trump administration and China was the role of networking company Huawei, which has developed cutting-edge equipment in a number of areas, especially 5G mobile communications. However, Huawei’s CEO is a former People’s Liberation Army member, and is suspected by many to be acting in the interests of the Chinese government. This chapter describes this difficult situation, where there is little evidence that Huawei is acting in such a way directly, but such is the Beijing Paternal Internet that it will certainly have to align with government policy. Despite the quality of Huawei’s products, many Western governments have refused to use them, or have given in to American pressure, citing national security considerations. The Trump administration worked to push Huawei out of business, but it remains a key player in China’s Belt and Road Initiative and central to Chinese technology strategy.

scholarly journals Resource Sharing for Granted & Grant-free Demands in 5G for Non-orthogonal Multiple Access

2019 ◽  
Vol 8 (4S3) ◽  
pp. 398-400
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Resource Sharing ◽  
Multiple Access ◽  
Network Capacity ◽  
Mobile Internet ◽  
Common People ◽  
Present Generation ◽  
Random Approach

In the present days we observed a drastic change in the usage of mobile internet as well as advancements in Internet of things. With this advancements in mobile communications as well as IOT, the present generation mobile communication i.e. 4G technology is considered to be not sufficient to reach to the needs of common people, therefore the upcoming generation 5G needs in a frame way to face to ultra huge network capacity & massive wireless connectivity. A major hopeful technology which has the capacity for enabling different user equipments, sharing interweaving wireless resources in 5G is named as Non Orthogonal multiple Access (NOMA) technology, where most of the industrialists & academicians are doing research in recent years To establish good Quality of Service (QoS) & also to obtain low access latency as well as overhead signaling NOMA must compulsorily support two kinds of approaches: i) Scheduling approach ii)Random approach. The major challenge we observe in these two kinds of approach is how efficiently we obtain simultaneous support. Here we are proposing an approach for combining the granted & grant free demands which works on the principle of allowing the approaches to share the same resources simultaneously. We are proposing heuristic resource algorithm which improve capacity of network & user connectivity of NOMA in 5G networking

The Top Loading Antenna with Fractal Photonic Crystal Used in TD-LTE System

2014 ◽  
Vol 915-916 ◽  
pp. 1163-1166 ◽  
Author(s):  
Bin Lin ◽  
Ting Lin ◽  
Yang Ge ◽  
Rong Rong Wang ◽  
Yong Ping Guo ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Communication Technology ◽  
Mobile Communication ◽  
Mobile Communications ◽  
Fourth Generation ◽  
Broadband Wireless ◽  
Communication Device ◽  
Mobile Communication Terminal ◽  
Mobile Communication Technology

The performance of antenna has the conclusive influence to the performance of mobile communication terminal; one excellent-performance antenna can improve the communication quality of communication device greatly. With the developing of broadband wireless communication technology, the fourth generation mobile communication technology has advanced day after day, and will turn into practical soon. This article aim at the demand of the fourth generation mobile communication technologys standard of TD-LTE, combined with the fractal technology, photonic crystal texture and top loading technique, designing a fractal photonic crystal top loading antenna which can work in 2.6GHz frequency band, and make simulate analysis to the performance of antenna and make the sample of antenna to test. The result from simulation and test shows this antenna has a low return loss and the work bandwidth is big, which is suitable for the fourth generation mobile communications TD-LTE system.

A Dual-Band and Low-Cost Microstrip Patch Antenna for 5G Mobile Communications

2021 ◽  
Vol 36 (7) ◽  
pp. 824-829
Author(s):  
Fatih Kaburcuk ◽  
Gurkan Kalinay ◽  
Yiming Chen ◽  
Atef Elsherbeni ◽  
Veysel Demir
Keyword(s):  
Mobile Communications ◽  
Patch Antenna ◽  
Low Cost ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Dual Frequency ◽  
Microstrip Patch ◽  
Fifth Generation ◽  
Communication Devices ◽  
5G Mobile Communications

This paper investigates the numerical and experimental analysis of a low-cost and dual-band microstrip patch antenna for the fifth generation (5G) mobile communications. The numerical analysis of the proposed antenna is performed using the computational electromagnetic simulator (CEMS) software which is based on the finite-difference time-domain (FDTD) and CST software which is based on the finite integration technique (FIT). The performance of the proposed antenna designed and fabricated on a low-cost FR-4 substrate is verified with the simulated and measured results. The antenna operates at dual frequency bands which are 24 and 28 GHz. The antenna maximum gain values are 3.20 dBi and 3.99 dBi in the x-y plane at 24 and 28 GHz, respectively. The proposed antenna provides almost omni-directional patterns suitable for 5G mobile communication devices.

scholarly journals 5G base station prototyping: implementation possibilities in Russia

2019 ◽  
Vol 30 ◽  
pp. 03001
Author(s):  
Oleg Ponomarev ◽  
Alexander Moiseichenkov ◽  
Alexander Bakhtin ◽  
Elena Omelyanchuk ◽  
Anastasia Semenova ◽  
...  
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Base Station ◽  
Base Stations ◽  
5G Networks ◽  
Pilot Projects ◽  
Algorithmic Support ◽  
The World ◽  
Technical Specifications ◽  
5G Mobile Communications

A brief overview of the development of 5G mobile communications in the world and in Russia is presented. 5G pilot projects in Russia are considered. The basic requirements for 5G networks, the tasks facing developers, examples of hardware and brief technical specifications of hardware produced in Russia that can be used to create base station equipment for 5G networks are given. The work of MIET on the development of software and algorithmic support for 5G transceiver equipment is described. An estimation is given concerning the feasibility of implementing 5G generation mobile communication base stations in Russia, including on the basis of hardware from Russian manufacturers.

scholarly journals Application of Random Walk Model in Mobile Communication Data Optimization

2021 ◽  
Vol 2074 (1) ◽  
pp. 012060
Author(s):  
Wen Zhang
Keyword(s):  
Random Walk ◽  
Data Storage ◽  
Mobile Communication ◽  
Mobile Communications ◽  
Data Transmission ◽  
Transmission Efficiency ◽  
Random Walk Model ◽  
Actual Application ◽  
Data Optimization

Abstract With the continuous development of society and economy, the development and application of mobile communications have become more and more popular, and more people have begun to use mobile devices for office, study and life. The quality of mobile communications network signals directly affects people’s experience of use. The scope of actual application has gradually increased with the renewal of the technology itself. Based on the random walk model, this paper constructs a mobile communication data optimization plan. Through data storage, transmission delay, and information total control, the optimization form of wireless network mobile communication data transmission performance is studied. Practice shows that this scheme can effectively improve communication quality and transmission efficiency.

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