scholarly journals A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2014
Author(s):  
M. A. Elmagzoub ◽  
Asadullah Shaikh ◽  
Abdullah Alghamdi ◽  
Khairan Rajab
Keyword(s):  
Wireless Networks ◽  
Optical Networks ◽  
Optical Fibre ◽  
Mobile Networks ◽  
Access Network ◽  
Future Research ◽  
Broadband Networks ◽  
Next Generation ◽  
High Data ◽  
Data Rates

Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

scholarly journals Latency-Aware Offloading in Integrated Satellite Terrestrial Networks

2020 ◽  
Author(s):  
Wiem Abderrahim ◽  
Osama Amin ◽  
Mohamed-Slim Alouini ◽  
Basem Shihada
Keyword(s):  
Communication Networks ◽  
Rural Areas ◽  
Access Network ◽  
High Capacity ◽  
High Load ◽  
Traffic Load ◽  
Satellite Systems ◽  
High Data ◽  
Data Rates ◽  
Terrestrial Networks

Next-generation communication networks are expected to integrate newly-used technologies in a smart way to ensure continuous connectivity in rural areas and to alleviate the traffic load in dense regions. The prospective access network in 6G should hinge on satellite systems to take advantage of their wide coverage and high capacity. However, adopting satellites in 6G could be hindered because of the {additional latency introduced}, which is not tolerable by all traffic types. Therefore, we propose a traffic offloading scheme that integrates both the satellite and terrestrial networks to smartly allocate the traffic between them while satisfying different traffic requirements. Specifically, the proposed scheme offloads the Ultra-Reliable Low Latency Communication (URLLC) traffic to the terrestrial backhaul to satisfy its stringent latency requirement. However, it offloads the enhanced Mobile Broadband (eMBB) traffic to the satellite since eMBB needs high data rates but is not always sensitive to delay. Our scheme is shown to reduce the transmission delay of URLLC packets, decrease the number of dropped eMBB packets, and hence improve the network's availability. Our findings highlight that the inter-working between satellite and terrestrial networks is crucial to mitigate the expected high load on the limited terrestrial capacity.<br>

Telematics and Mobile Internet

2021 ◽  
pp. 373-396
Author(s):  
Gurkan Tuna ◽  
Korhan Cengiz
Keyword(s):  
Mobile Networks ◽  
Urban Areas ◽  
Intelligent Transportation System ◽  
Intelligent Transportation ◽  
Transportation System ◽  
Mobile Internet ◽  
Future Research ◽  
Internet Applications ◽  
Data Rates ◽  
Latency Jitter

Telematics technologies and vehicular communications enable various intelligent transportation system applications with different data flow requirements that must be considered by the communications infrastructure provider in terms of transmission reliability, latency, jitter, and security. To meet those requirements, the dynamic nature of traffic and spatiotemporal features of roads must be considered. In parallel with the full coverage in urban areas and increase in the data rates, mobile networks have been started to be widely used by intelligent transportation system applications, especially for gathering data from various sensors. In this chapter, firstly, the current situation of telematics applications for intelligent transportation system is focused on and then mobile internet and mobile internet based applications are reviewed. Second, how much benefit vehicle telematics and mobile internet applications can obtain from the evolution of mobile networks is analysed. Finally, future research directions in this domain are pointed out.

Wavelength Division Multiplexed Passive Optical Networks

2010 ◽  
pp. 68-101
Author(s):  
Calvin C.K. Chan
Keyword(s):  
Optical Networks ◽  
Large Scale ◽  
Driving Forces ◽  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Next Generation ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Capacity Data

Wavelength division multiplexed passive optical network has emerged as a promising solution to support a robust and large-scale next generation optical access network. It offers high-capacity data delivery and flexible bandwidth provisioning to all subscribers, so as to meet the ever-increasing bandwidth requirements as well as the quality of service requirements of the next generation broadband access networks. The maturity and reduced cost of the WDM components available in the market are also among the major driving forces to enhance the feasibility and practicality of commercial deployment. In this chapter, the author will provide a comprehensive discussion on the basic principles and network architectures for WDM-PONs, as well as their various enabling technologies. Different feasible approaches to support the two-way transmission will be discussed. It is believed that WDM-PON is an attractive solution to realize fiber-to-the-home (FTTH) applications.

Evolution of QoS Control in Next Generation Mobile Networks

2010 ◽  
pp. 595-612
Author(s):  
Alberto Díez Albaladejo ◽  
Fabricio Gouveia ◽  
Marius Corici ◽  
Thomas Magedanz
Keyword(s):  
Wireless Networks ◽  
Mobile Networks ◽  
Mobile Network ◽  
Next Generation ◽  
Qos Control ◽  
Main Research ◽  
Next Generation Mobile Networks ◽  
Major Trend ◽  
Promising Solution ◽  
Common Architecture

Next Generation Mobile Networks (NGMNs) constitute the evolution of mobile network architectures towards a common IP based network. One of the main research topics in wireless networks architectures is QoS control and provisioning. Different approaches to this issue have been described. The introduction of the NGMNs is a major trend in telecommunications, but the heterogeneity of wireless accesses increases the challenges and complicates the design of QoS control and provisioning. This chapter provides an overview of the standard architectures for QoS control in Wireless networks (e.g. UMTS, WiFi, WiMAX, CDMA2000), as well as, the issues on this all-IP environment. It provides the state-of-the-art and the latest trends for converging networks to a common architecture. It also describes the challenges that appear in the design and deployment of QoS architectures for heterogeneous accesses and the available solutions. The Evolved Core from 3GPP is analyzed and described as a suitable and promising solution addressing these challenges.

A MAC Protocol for Terahertz Ultra-High Data-Rate Wireless Networks

2013 ◽  
Vol 427-429 ◽  
pp. 2864-2869
Author(s):  
Zhi Ren ◽  
Ya Nan Cao ◽  
Shuang Peng ◽  
Hong Jiang Lei
Keyword(s):  
Wireless Networks ◽  
Electromagnetic Waves ◽  
Mac Protocol ◽  
Terahertz Wave ◽  
Data Rate ◽  
High Data Rate ◽  
Control Mechanisms ◽  
High Data ◽  
Large Bandwidth ◽  
Data Rates

The terahertz wave is a kind of electromagnetic waves which locates between millimeter waves and infrared lightwaves, and the frequency range is 0.14THz~10THz. Terahertz is used as a carrier wave to communicate with each other because it has large bandwidth which can support Gbps wireless data rates. Therefore, terahertz communication technologies become research hot spots in recent years. However, its still rare in MAC protocol of terahertz ultra-high data-rate wireless networks at present. In order to realize wireless access of ultra-high data-rate under the condition of terahertz carrier frequency, a novel MAC protocol is proposed in this paper. The improved MAC protocol which makes the maximum data rates reach up to 10Gbps or higher is designed by new MAC control mechanisms, new time-slots allocation schemes and new superframe structure. Theoretical analysis and simulation results show that the new proposed MAC protocol of terahertz ultra-high data-rate wireless networks can operation normally, and the maximum data rate can reach up to 19.2Gbps. This maximum data rate is 2 times higher than 5.78 Gbps which IEEE 802.15.3c can achieve.

Research on Power Optimization Based on Adaptive Passive Optical Networks

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Li Li ◽  
Li Hong-Jie
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Access Network ◽  
Data Rate ◽  
Passive Optical Network ◽  
High Data Rate ◽  
Transmission Power ◽  
High Data ◽  
Maximum Transmission ◽  
Wdm Pon

AbstractFor the commercial wavelength division multiplexing passive optical network (WDM-PON) with standard single-mode fiber SSMF-28 and 1:64 passive fiber branching at its far end (RN) and 100 GHz C-band continuous wavelength (CW) lasers, the maximum coverage and optimal transmission power of STM-16 and STM-64 with external modulators at different speeds and wave numbers (4λ, 8λ and 16λ) are obtained, respectively. The performance parameter of the high data rate WDM-PON system is analyzed with respect to a number of channels and reach. In order to improve the network utilization and receiving efficiency, the influence of different channels and transmission distances on the performance of high data rate WDM-PON system is analyzed. Simulation analysis with Optisystem15.0. The maximum transmission power required to achieve the maximum transmission distance under the condition of nonlinear constraints is obtained. In order to save power consumption, the configuration of each multi-band PON is optimized in terms of transmission power. It is found that WDM-PON system has to compromise between aggregated data rate and system reach. Future software defined access network reconfigure the access network depending on the dynamic demand and the resources available. Hence depending on the distance between the optical line terminal (OLT) and optical network unit (ONU) guaranteed data rate can be estimated. ONU is equipped with a tunable optical filter (TOF) hence future wavelength can be reconfigured by both service provider and user. It makes it possible for software to customize optical access network.

scholarly journals Edge Intelligence in Private Mobile Networks for Next-Generation Railway Systems

2021 ◽  
Vol 2 ◽  
Author(s):  
Syed Muhammad Asad ◽  
Ahsen Tahir ◽  
Rao Naveed Bin Rais ◽  
Shuja Ansari ◽  
Attai Ibrahim Abubakar ◽  
...  
Keyword(s):  
Research And Development ◽  
Mobile Networks ◽  
Use Cases ◽  
Transport Systems ◽  
Future Research ◽  
Next Generation ◽  
Railway Systems ◽  
Industry Applications ◽  
Railway System ◽  
Instrumental Role

The integration of Private Mobile Networks (PMN) with edge intelligence is expected to play an instrumental role in realizing the next generation of industry applications. This combination collectively termed Intelligent Private Networks (IPN) deployed within the scope of specific industries such as transport systems can unlock several use cases and critical applications that in turn can address rising business demands. This article presents a conceptual IPN that hosts intelligence at the network edge employing emerging technologies that satisfy a number of Next-Generation Railway System (NGRS) applications. NGRS use cases along with their applications and respective beyond 5G (B5G) enabling technologies have been discussed along with possible future research and development directions that will allow these promising technologies to be used and implemented widely.

scholarly journals Optieseveselkommunikasie: verlede, hede en toekoms

2000 ◽  
Vol 19 (3/4) ◽  
pp. 72-80
Author(s):  
B. M. Lacquet
Keyword(s):  
Optical Fibre ◽  
The Internet ◽  
High Data ◽  
Exponential Increase ◽  
Data Rates ◽  
High Data Rates ◽  
Use Of The Internet ◽  
Very High ◽  
Bandwidth Demand

The exponential increase in the use of the Internet and the consequent growing need for higher bandwidth demand that the telecommu­nications industry expand the laid networks at a much faster rate. Optical fibre is the only transmission medium that has the potential of unlimited bandwidth and the ability to handle very high data rates.

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