scholarly journals QoE Optimization in a Live Cellular Network through RLC Parameter Tuning

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5619
Author(s):  
Jessica Mendoza ◽  
Isabel de-la-Bandera ◽  
David Palacios ◽  
Raquel Barco
Keyword(s):  
Communication Networks ◽  
Mobile Networks ◽  
Cellular Network ◽  
Parameter Tuning ◽  
Optimization Techniques ◽  
Radio Link ◽  
Network Simulator ◽  
File Transfer ◽  
Streaming Service

The mobile communication networks sector has experienced a great evolution during the last few years. The emergence of new services as well as the growth in the number of subscribers have motivated the search for new ways to optimize mobile networks. In this way, the objective pursued by optimization techniques has been evolving, shifting from the traditional optimization of radio parameters to the improvement of the quality perceived by users, known as quality of experience (QoE). In mobile networks, the radio link control (RLC) layer provides a reliable link between both ends of the communication and has a great impact on the QoE. In this paper, the optimization of the QoE for users based on the adjustment of the RLC layer is proposed. For this purpose, two typical services demanded by the users of mobile networks have been selected: the real-time video streaming service and file transfer service. For a broader view of the behavior of the QoE in relation to RLC, optimization tests have been carried out in scenarios with different system bandwidths. In this way, the relationship between the QoE and the optimal configuration of RLC in different network load situations has been analyzed. A proof of concept has been carried out to show the capability of this optimization. To that end, both a cellular network simulator and a live cellular network devised for research purposes have been used.

scholarly journals On the Capability of QoE Improvement Based on the Adjustment of RLC Parameters

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2474
Author(s):  
Jessica Mendoza ◽  
Isabel de-la-Bandera ◽  
David Palacios ◽  
Ana Herrera-García ◽  
Raquel Barco
Keyword(s):  
Mobile Networks ◽  
Mobile Communications ◽  
Optimization Techniques ◽  
Buffer Size ◽  
Radio Link ◽  
File Transfer ◽  
New Techniques ◽  
Available Bandwidth ◽  
Cellular Environment ◽  
The Impact

The constant evolution in mobile communications networks have led operators to seek new techniques to optimize their mobile networks with the objective of satisfying the expectations of the users. In this way, traditional optimization techniques based on improving radio indicators, have given way to new techniques based on improving the quality of experience (QoE) perceived by users. This paper is focused on analyzing the impact of the adjustment of radio link control (RLC) layer configuration parameters on the QoE perceived by the users of two different types of services. Firstly, an evaluation of the QoE experienced by the user of a real-time video streaming service with respect to the transmission buffer size of the RLC layer in unacknowledged mode (UM) has been carried out. Secondly, the QoE perceived by the user of a file transfer service in relation to the variation of the configuration parameters of the RLC layer in acknowledged mode (AM) has been evaluated. The study, which has been carried out in a simulated cellular environment, has been performed for different system bandwidth values, thus proving the relationship between the QoE perceived by the users, the optimal RLC configuration parameters values and the available bandwidth.

scholarly journals Measuring Key Quality Indicators in Cloud Gaming: Framework and Assessment Over Wireless Networks

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1387
Author(s):  
Oswaldo Sebastian Peñaherrera-Pulla ◽  
Carlos Baena ◽  
Sergio Fortes ◽  
Eduardo Baena ◽  
Raquel Barco
Keyword(s):  
Communication Networks ◽  
Mobile Networks ◽  
Video Game ◽  
Know How ◽  
Fifth Generation ◽  
New Generation ◽  
Graphics Rendering ◽  
The Impact

Cloud Gaming is a cutting-edge paradigm in the video game provision where the graphics rendering and logic are computed in the cloud. This allows a user’s thin client systems with much more limited capabilities to offer a comparable experience with traditional local and online gaming but using reduced hardware requirements. In contrast, this approach stresses the communication networks between the client and the cloud. In this context, it is necessary to know how to configure the network in order to provide service with the best quality. To that end, the present work defines a novel framework for Cloud Gaming performance evaluation. This system is implemented in a real testbed and evaluates the Cloud Gaming approach for different transport networks (Ethernet, WiFi, and LTE (Long Term Evolution)) and scenarios, automating the acquisition of the gaming metrics. From this, the impact on the overall gaming experience is analyzed identifying the main parameters involved in its performance. Hence, the future lines for Cloud Gaming QoE-based (Quality of Experience) optimization are established, this way being of configuration, a trendy paradigm in the new-generation networks, such as 4G and 5G (Fourth and Fifth Generation of Mobile Networks).

The Design and Performance of a CORBA Audio/Video Streaming Service

2011 ◽  
pp. 54-101
Author(s):  
Naga Surendran ◽  
Yamuna Krishamurthy ◽  
Douglas C. Schmidt
Keyword(s):  
File Transfer ◽  
Network Bandwidth ◽  
Processing Power ◽  
Bulk Data ◽  
Streaming Service ◽  
And Performance ◽  
Audio Video ◽  
Media Applications ◽  
Stringent Quality

Advances in network bandwidth and CPU processing power have enabled the emergence of multimedia applications, such as teleconferencing or streaming video, that exhibit significantly more diverse and stringent quality-of-service (QoS) requirements than traditional data-oriented applications, such as file transfer or email. For instance, popular Internet-based streaming mechanisms, such as Realvideo (RealNetworks, 1998) and Vxtreme (Vxtreme, 1998), allow suppliers to transmit continuous streams of audio and video packets to consumers. Likewise, non-continuous media applications, such as medical imaging servers (Hu et al., 1998) and network management agents (Schmidt and Suda, 1994), employ streaming to transfer bulk data efficiently from suppliers to consumers.

scholarly journals Numeric Analysis for Relationship-Aware Scalable Streaming Scheme

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Heung Ki Lee ◽  
Jaehee Jung ◽  
Kyung Jin Ahn ◽  
Hwa-Young Jeong ◽  
Gangman Yi
Keyword(s):  
Mobile Networks ◽  
Packet Loss ◽  
Reference Frames ◽  
Mobile Network ◽  
Multimedia Data ◽  
Set Top Box ◽  
The Hierarchical Structure ◽  
Streaming Service ◽  
Scalable Streaming

Frequent packet loss of media data is a critical problem that degrades the quality of streaming services over mobile networks. Packet loss invalidates frames containing lost packets and other related frames at the same time. Indirect loss caused by losing packets decreases the quality of streaming. A scalable streaming service can decrease the amount of dropped multimedia resulting from a single packet loss. Content providers typically divide one large media stream into several layers through a scalable streaming service and then provide each scalable layer to the user depending on the mobile network. Also, a scalable streaming service makes it possible to decode partial multimedia data depending on the relationship between frames and layers. Therefore, a scalable streaming service provides a way to decrease the wasted multimedia data when one packet is lost. However, the hierarchical structure between frames and layers of scalable streams determines the service quality of the scalable streaming service. Even if whole packets of layers are transmitted successfully, they cannot be decoded as a result of the absence of reference frames and layers. Therefore, the complicated relationship between frames and layers in a scalable stream increases the volume of abandoned layers. For providing a high-quality scalable streaming service, we choose a proper relationship between scalable layers as well as the amount of transmitted multimedia data depending on the network situation. We prove that a simple scalable scheme outperforms a complicated scheme in an error-prone network. We suggest an adaptive set-top box (AdaptiveSTB) to lower the dependency between scalable layers in a scalable stream. Also, we provide a numerical model to obtain the indirect loss of multimedia data and apply it to various multimedia streams. Our AdaptiveSTB enhances the quality of a scalable streaming service by removing indirect loss.

scholarly journals OPTIMIZED MULTI-OBJECTIVE ROUTING FOR WIRELESS COMMUNICATION WITH LOAD BALANCING

2019 ◽  
Vol 2019 (02) ◽  
pp. 106-120 ◽  
Author(s):  
Dr.Sathesh A.
Keyword(s):  
Energy Consumption ◽  
Wireless Communication ◽  
Mobile Devices ◽  
Communication Networks ◽  
Mobile Networks ◽  
Optimization Technique ◽  
Maximum Energy ◽  
Portable Devices ◽  
Network Simulator ◽  
Multi Objective

The rapid advancements in the wireless communication networks have increased the popularity of portable or mobile devices and the network framed with these mobile devices. These mobile networks framed using the volunteering portable devices are decentralized and have dynamic topologies experiencing sudden changes in the network structure. The main reason causing the topology changes are the limited energy availability of the device and their mobility. Improper trafficking of the tasks and improper selection of the portable devices causes maximum energy consumption resulting in the link failures and changes in the topology of the network. So the paper puts forward the hybridized optimization technique to handle the multi-objective problem faced by these decentralized networks. The proposed method is validated using the network simulator-2 to evince throughput, energy consumption and the network longevity achieved by the proposed method.

Simulation modeling of packet switching network segment functioning

2019 ◽  
pp. 75-82
Author(s):  
D. V. Shelkovoy ◽  
A. A. Chernikov
Keyword(s):  
Quality Of Service ◽  
Communication Networks ◽  
Simulation Modeling ◽  
Data Stream ◽  
Switching Network ◽  
Data Packets ◽  
Channel Resource ◽  
Switching Node ◽  
Joint Examination

The testing results of required channel resource mathematical estimating models for the for serving the proposed multimedia load in packet-switched communication networks are presented in the article. The assessment of the attainable level of quality of service at the level of data packet transportation was carried out by means of simulation modeling of the functioning of a switching node of a communication network. The developed modeling algorithm differs from the existing ones by taking into account the introduced delay for processing each data stream packet arriving at the switching node, depending on the size of the reserved buffer and the channel resource for its maintenance. A joint examination of the probability of packet loss and the introduced delay in the processing of data packets in the border router allows a comprehensive assessment of the quality of service «end to end», which in turn allows you to get more accurate values of the effective data transmitted rate by aggregating flows at the entrance to the transport network.

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