A New Qos Control Scheme Using Dynamic Window Size Control for Wide Area Wireless Networks

2007 ◽  
Author(s):  
Fusao Nuno ◽  
Yoshitaka Shimizu ◽  
Kazuji Watanabe
Keyword(s):  
Wireless Networks ◽  
Size Control ◽  
Window Size ◽  
Wide Area ◽  
Qos Control ◽  
Control Scheme

scholarly journals Multipath Wireless Network Coding: A Scheduling Constraint in Game Perspective

2021 ◽  
pp. 105-109
Author(s):  
Dr. D. Chitra ◽  
K. Ilakkiya
Keyword(s):  
Wireless Networks ◽  
Network Coding ◽  
Potential Game ◽  
Level Control ◽  
Link Capacity ◽  
Space Extension ◽  
Wireless Network Coding ◽  
Traffic Matrix ◽  
Control Scheme ◽  
User Actions

This paper considers wireless networks in which various paths are obtainable involving each source and destination. It is allowing each source to tear traffic among all of its existing paths, and it may conquer the lowest achievable number of transmissions per unit time to sustain a prearranged traffic matrix. Traffic bound in contradictory instructions in excess of two wireless hops can utilize the “reverse carpooling” advantage of network coding in order to decrease the number of transmissions used. These call such coded hops “hyper-links.” With the overturn carpooling procedure, longer paths might be cheaper than shorter ones. However, convenient is an irregular situation among sources. The network coding advantage is realized only if there is traffic in both directions of a shared path. This project regard as the problem of routing amid network coding by egotistic agents (the sources) as a potential game and develop a method of state-space extension in which extra agents (the hyper-links) decouple sources’ choices from each other by declaring a hyper-link capacity, allowing sources to split their traffic selfishly in a distributed fashion, and then altering the hyper-link capacity based on user actions. Furthermore, each hyper-link has a scheduling constraint in stipulations of the maximum number of transmissions authorized per unit time. Finally these project show that our two-level control scheme is established and verify our investigative insights by simulation.

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.

Mobility over Heterogeneous Wireless Networks

2011 ◽  
pp. 652-659
Author(s):  
Lek Heng Ngoh ◽  
Jaya Shankar P.
Keyword(s):  
Wireless Networks ◽  
Heterogeneous Wireless Networks ◽  
Wide Area ◽  
Area Network ◽  
Wireless Technologies ◽  
Moby Dick ◽  
3G Networks ◽  
Societal Needs ◽  
Public Networks ◽  
Roaming User

Accessing wireless services and application on the move has become a norm among casual or business users these days. Due to societal needs, technological innovation, and networks operators’ business strategies, there has been a rapid proliferation of many different wireless technologies. In many parts of the world, we are witnessing a wireless ecosystem consisting of wide-area, low-to-medium-bandwidth network based on access technologies such as GSM, GPRS, and WCDMA, overlaid by faster local area networks such as IEEE 802.11-based Wireless LANs and Bluetooth pico-networks. One notable advantage of wide-area networks such as GPRS and 3G networks is their ability to provide access in a larger service area. However, a wide-area network has limited bandwidth and higher latency. 3G systems promise a speed of up to 2Mbps per cell for a non-roaming user. On the other hand, alternative wireless technologies like WLAN 802.11and Personal area network (PAN) using Bluetooth technology have limited range but can provide much higher bandwidth. Thus, technologies like WWAN and WLAN provide complementary features with respect to operating range and available bandwidth. Consequently, the natural trend will be toward utilizing high bandwidth data networks such as WLAN, whenever they are available, and to switch to an overlay service such as GPRS or 3G networks with low bandwidth, when coverage of WLAN is not available. Adding to the existing public networks, some private institutions (i.e., universities) have joined the fray to adopt wireless infrastructure to support mobility within their premises, thus adding to the plethora of wireless networks. With such pervasiveness, solutions are required to guarantee end-user terminal mobility and maintain always-on session connections to the Internet. To achieve this objective, an end device with several radio interfaces and intelligent software that would enable the automatic selection of networks and resources is necessary (Einsiedler, 2001; Moby Dick, 2003).

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