Coordinated Multicast/Unicast Transmission on 5G: A Novel Approach for Linear Broadcasting

AbstractLinear broadcasting services, with a scheduled programming, constitute a paramount telecommunication service for today’s society. Although the existing technology is mature, current linear broadcast systems have serious limitations when providing service to moving users or users placed in areas with complex orography and poor signal quality. To overcome these limitations, 3GPP 5G standard has included a work item to support 5G multicast/broadcast services for future Release 17. This paper investigates the integration of point-to-point (unicast) communication with cellular multicast/broadcast on 5G technology to extend the current support of linear broadcasting services. This integration relies on the use mobile edge computing (MEC) at the 5G base station (gNB) to host a dynamic adaptive streaming over HTTP (DASH) server that is coordinated with the multicast transmission to complement the broadcast service. This approach join the reliability of point-to-point communications, with dedicated resources for each user, with the spectrum efficiency of multi-cast communications, where a set of users share common resources. The cooperation between those unicast and multicast schemes allows those users whose coverage is not good enough, to complete the linear broadcast flow through the point-to-point transmission via MEC. The benefits of such approach have been assessed with simulations in a realistic scenario that considers a vehicle moving across a sparsely populated region in southern Spain. Results reveals that throughput and bitrate playback (reproduction rate) are greatly improved when unicast/multicast integration is enabled since the number of stalling events is reduced significantly.

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Information System for the Improvement of Telecommunication Service Quality

10.5753/sbsi.2017.6095 ◽

2017 ◽

Author(s):

Elvis Assis ◽

Emmanuel Tavares ◽

Demóstenes Rodríguez ◽

Renata Rosa

Keyword(s):

Information System ◽

Social Network ◽

Geographic Area ◽

Base Station ◽

Base Stations ◽

Telecommunication Service ◽

Signal Quality ◽

Telecommunication Services ◽

Telecommunication Operators

This work describes an information system regarding to the telecommunication service with the goal to inform to the telephony service users about the operators signal quality and the users’ opinion about the telecommunication operators. The system contains information of cellular base station locations and the results are crossed with sentiment analyses of sentences extracted from a social network, which are related to the telecommunication services. The study aims to detect complaints and dissatisfaction of users about a determined service, helping to make a relation between the users’ complains extracted from social network with the number of base stations in the same geographic area of the user's social network. Therefore, the proposed information system can be used by the National Telecommunications Agency of each country for monitoring the quality-of-service of cellular network operators.

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The spectrum efficiency of a base station antenna array system for spatially selective transmission

Proceedings of IEEE Vehicular Technology Conference (VTC) ◽

10.1109/vetec.1994.345349 ◽

2002 ◽

Cited By ~ 12

Author(s):

P. Zetterberg ◽

B. Ottersten

Keyword(s):

Antenna Array ◽

Base Station ◽

Spectrum Efficiency

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Fabrication of Carbohydrate Chips Based on Polydopamine for Real-Time Determination of Carbohydrate–Lectin Interactions by QCM Biosensor

Polymers ◽

10.3390/polym10111275 ◽

2018 ◽

Vol 10 (11) ◽

pp. 1275 ◽

Cited By ~ 5

Author(s):

Kun Shang ◽

Siyu Song ◽

Yaping Cheng ◽

Lili Guo ◽

Yuxin Pei ◽

...

Keyword(s):

Real Time ◽

Con A ◽

Quartz Crystals ◽

Ulex Europaeus ◽

Novel Approach ◽

Ulex Europaeus Agglutinin I ◽

Flow Through ◽

Time Determination ◽

Kinetics Of

A novel approach for preparing carbohydrate chips based on polydopamine (PDA) surface to study carbohydrate–lectin interactions by quartz crystal microbalance (QCM) biosensor instrument has been developed. The amino-carbohydrates were immobilized on PDA-coated quartz crystals via Schiff base reaction and/or Michael addition reaction. The resulting carbohydrate-chips were applied to QCM biosensor instrument with flow-through system for real-time detection of lectin–carbohydrate interactions. A series of plant lectins, including wheat germ agglutinin (WGA), concanavalin A (Con A), Ulex europaeus agglutinin I (UEA-I), soybean agglutinin (SBA), and peanut agglutinin (PNA), were evaluated for the binding to different kinds of carbohydrate chips. Clearly, the results show that the predicted lectin selectively binds to the carbohydrates, which demonstrates the applicability of the approach. Furthermore, the kinetics of the interactions between Con A and mannose, WGA and N-Acetylglucosamine were studied, respectively. This study provides an efficient approach to preparing carbohydrate chips based on PDA for the lectin–carbohydrate interactions study.

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Beam division multiple access for millimeter wave massive MIMO: Hybrid zero-forcing beamforming with user selection

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v12i1.pp445-452 ◽

2022 ◽

Vol 12 (1) ◽

pp. 445

Author(s):

Hong Son Vu ◽

Kien Truong ◽

Minh Thuy Le

Keyword(s):

Multiple Access ◽

Mimo Systems ◽

Multiple Input Multiple Output ◽

Base Station ◽

Zero Forcing ◽

Multiuser Interference ◽

Novel Approach ◽

Multiple Input ◽

Input Multiple Output ◽

Promising Solution

<p>Massive multiple-input multiple-output (MIMO) systems are considered a promising solution to minimize multiuser interference (MUI) based on simple precoding techniques with a massive antenna array at a base station (BS). This paper presents a novel approach of beam division multiple access (BDMA) which BS transmit signals to multiusers at the same time via different beams based on hybrid beamforming and user-beam schedule. With the selection of users whose steering vectors are orthogonal to each other, interference between users is significantly improved. While, the efficiency spectrum of proposed scheme reaches to the performance of fully digital solutions, the multiuser interference is considerably reduced.</p>

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A Novel Approach for Improved Vehicular Positioning Using Cooperative Map Matching and Dynamic Base Station DGPS Concept

IEEE Transactions on Intelligent Transportation Systems ◽

10.1109/tits.2015.2465141 ◽

2016 ◽

Vol 17 (1) ◽

pp. 230-239 ◽

Cited By ~ 41

Author(s):

Mohsen Rohani ◽

Denis Gingras ◽

Dominique Gruyer

Keyword(s):

Base Station ◽

Map Matching ◽

Novel Approach

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Chipless RFID Sensor for High Voltage Condition Monitoring

Advanced RFID Systems, Security, and Applications ◽

10.4018/978-1-4666-2080-3.ch013 ◽

2012 ◽

pp. 304-333

Author(s):

Emran Md Amin ◽

Nemai Chandra Karmakar

Keyword(s):

Condition Monitoring ◽

High Voltage ◽

Radio Frequency Identification ◽

Low Cost ◽

Base Station ◽

Novel Approach ◽

Frequency Identification ◽

On Line ◽

Passive Rfid ◽

Passive Circuit

A novel approach for non-invasive radiometric Partial Discharge (PD) detection and localization of faulty power apparatuses in switchyards using Chipless Radio Frequency Identification (RFID) based sensor is presented. The sensor integrates temperature sensing together with PD detection to assist on-line automated condition monitoring of high voltage equipment. The sensor is a multi-resonator based passive circuit with two antennas for reception of PD signal from the source and transmission of the captured PD to the base station. The sensor captures PD signal, processes it with designated spectral signatures as identification data bits, incorporates temperature information, and retransmits the data with PD signals to the base station. Analyzing the PD signal in the base station, both the PD levels and temperature of a particular faulty source can be retrieved. The prototype sensor was designed, fabricated, and tested for performance analysis. Results verify that the sensor is capable of identifying different sources at the events of PD. The proposed low cost passive RFID based PD sensor has a major advantage over existing condition monitoring techniques due to its scalability to large substations for mass deployment.

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A new approach for flow-through respirometry measurements in humans

AJP Regulatory Integrative and Comparative Physiology ◽

10.1152/ajpregu.00055.2010 ◽

2010 ◽

Vol 298 (6) ◽

pp. R1571-R1579 ◽

Cited By ~ 37

Author(s):

Edward L. Melanson ◽

Jan P. Ingebrigtsen ◽

Audrey Bergouignan ◽

Kazunori Ohkawara ◽

Wendy M. Kohrt ◽

...

Keyword(s):

Water Vapor ◽

Relative Humidity ◽

Gas Exchange ◽

Flow Rate ◽

Water Vapor Pressure ◽

Propane Combustion ◽

Pull System ◽

Novel Approach ◽

Flow Through ◽

Combustion Tests

Indirect whole room calorimetry is commonly used in studies of human metabolism. These calorimeters can be configured as either push or pull systems. A major obstacle to accurately calculating gas exchange rates in a pull system is that the excurrent flow rate is increased above the incurrent flow rate, because the organism produces water vapor, which also dilutes the concentrations of respiratory gasses in the excurrent sample. A common approach to this problem is to dry the excurrent gasses prior to measurement, but if drying is incomplete, large errors in the calculated oxygen consumption will result. The other major potential source of error is fluctuations in the concentration of O2 and CO2 in the incurrent airstream. We describe a novel approach to measuring gas exchange using a pull-type whole room indirect calorimeter. Relative humidity and temperature of the incurrent and excurrent airstreams are measured continuously using high-precision, relative humidity and temperature sensors, permitting accurate measurement of water vapor pressure. The excurrent flow rates are then adjusted to eliminate the flow contribution from water vapor, and respiratory gas concentrations are adjusted to eliminate the effect of water vapor dilution. In addition, a novel switching approach is used that permits constant, uninterrupted measurement of the excurrent airstream while allowing frequent measurements of the incurrent airstream. To demonstrate the accuracy of this approach, we present the results of validation trials compared with our existing system and metabolic carts, as well as the results of standard propane combustion tests.

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A Lightweight Neighbor-Info-Based Routing Protocol for No-Base-Station Taxi-Call System

The Scientific World JOURNAL ◽

10.1155/2014/601913 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9

Author(s):

Xudong Zhu ◽

Jinhang Wang ◽

Yunchao Chen

Keyword(s):

Routing Protocol ◽

Base Station ◽

Signal Quality ◽

Topology Change ◽

Call System ◽

Wireless Signal ◽

Short Connection ◽

Reliable Path ◽

Better Than

Since the quick topology change and short connection duration, the VANET has had unstable routing and wireless signal quality. This paper proposes a kind of lightweight routing protocol-LNIB for call system without base station, which is applicable to the urban taxis. LNIB maintains and predicts neighbor information dynamically, thus finding the reliable path between the source and the target. This paper describes the protocol in detail and evaluates the performance of this protocol by simulating under different nodes density and speed. The result of evaluation shows that the performance of LNIB is better than AODV which is a classic protocol in taxi-call scene.

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