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We examine whether wireless ISPs should be able to legally limit the applications used on wireless devices. The analysis is based on wireless network architecture and communications law. We review how wired and wireless networks differ in traffic management, and conclude that wireless networks require stronger traffic management than wired networks at and below the network layer. We review communications...
In this work, we illustrate our experiences on activities about monitoring of the User Quality of Services (QoS) measurement campaigns. We show the network architecture that has been implemented to achieve QoS tests on all Italian users. Such a network permits to achieve a detailed investigation on the network causes that induce performance degradation and, therefore, it can be assumed as a basis...
Delivering desired QoS to the applications is one of the most important challenges in next generation networks. Designing efficient queue management in midway nodes leads to improvement in NGN efficiency. This paper presents fair Efficient active Queue Management (EQM) mechanism for congestion avoidance and control in next generation networks. Proposed AQM mechanism uses instantaneous queue length...
Tactical data links are an essential contribution to automatic "real-time" communication. In the current tactical environment, most users are pre-allocated a fixed amount of bandwidth. As a result, there should be bandwidth wastes and no guarantee of QoS. If the network is flooded, delaying of important messages may happen. So We need proper network management framework in TDL system. And...
In this paper, based on requirements of wireless Mesh network Multi-service and high speed, Is proposed based on more access control technology and the QoS control technology of new wireless resource allocation methods of the upward, To better solve the uplink bandwidths business concurrently, And both to delay and bandwidth requirements, improving the bandwidth of the system. Finally, simulation...
Research conducted at Morgan State University (MSU) has proposed a new approach for modeling and managing Quality of Service (QoS) in a cellular and ad-hoc mixed wireless network. This paper focuses on two key areas. It first introduces the “power” performance measure to model and manage the QoS requirements for wireless nodes with time critical applications as a function of the traffic level. It...
Admission control methods are important tools for ensuring the Quality of Service (QoS) of flows within a network by allowing additional flows only if their addition does not disrupt current flows. Two common admission control methods are Parameter-Based Admission Control (PBAC) and Measurement-Based Admission Control (MBAC). We have implemented versions of both methods in our Network QoS Management...
The IEEE 802.15.4 is the most widespread used protocol for Wireless Sensor Networks (WSNs) and it is being used as a baseline for several higher layer protocols such as ZigBee, 6LoWPAN or Wireless HART. Its MAC (Medium Access Control) supports both contention-free (CFP, based on the reservation of guaranteed time-slots GTS) and contention based (CAP, ruled by CSMA/CA) access, when operating in beacon-enabled...
The Network Management System of IPv4/IPv6 based IP-3DTV is one integrating LDAP server, SNMP server, StreamMedia server and ManagementSystem server. Different from the traditional IPTV management system, a function designed for the management of 3DTV has been added to all of the servers in IP-3DTV. Moreover, SNMP network management technology, together with LDAP directory access technology, provides...
Enterprise and service provider customers develop, maintain and operate network infrastructure in order to support the applications required to perform their day to day tasks. These applications have certain requirements and expectations from the infrastructure, including access to public networks, and thus rely on quality of service (QoS) controls to manage network traffic. QoS controls are used...
Network monitoring is today not only a process to merely gather information about the network status but also the basic step of further important activities of resource management and optimisation. Many network management processes start from the knowledge of the most up to date load status, and the measurement precision is of uttermost importance for an effective reaction. This paper presents a monitoring...
This paper deals with an algorithm of the Satellite Terminal, more precisely, it contributes to the Quality of Service management of the return link, a central problem in satellite network (compared to wire network) due to the satellite delay and the scare uplink resources. Instead of oversizing the connection, which could be very expensive, we aim at reaching an optimal exploitation of uplink resources...
The Context-Aware Broker is a policy-based management system developed by the authors to achieve autonomic communication in delay-tolerant networks. This is in recognition of environment challenges when operating in remote regions, and time, human, and financial resource costs incurred during mission-specific configuration. The Context-Aware Broker seeks to limit cost overheads through achieving a...
Work on the development of end-to-end QoS control management architecture for Next Generation Networks started at ITU-T a few years ago and it is still under way. This paper provides an overview of some of the protocols proposed by ITU-T (COPS-PR), describes others (COPS-SLS) developed to cover functionalities which have no corresponding protocols to date. This paper details the development of a mechanism...
In this paper, we provide a control-theoretic treatment of the resource allocations that adaptively occur in a QoS-aware network server system. Here, the target system being controlled is a logical service point that processes the transactions requested by clients using a resource infrastructure, with a goal of maximizing the revenues. Accurate management of resource allocations with a revenue-oriented...
Next Generation Networks (NGNs) transport a variety of services across a converged IP-based network infrastructure. To assure the Quality of Experience (QoE) for the users, an end-to-end Quality of Service (QoS) management is required. While solutions for QoS management and admission control in access and core networks exist, the inclusion of the home network remains still open. Thus, we present a...
Telecommunications Network Management Systems ( TNMSs) have had to respond to enormous change, as telecommunication networks have changed from the early (digital) timeframe of being ISDN based, (devoted dominantly to voice), to the current timeframe, providing diverse services of data, voice, video, along with a very different business environment. The goal of this paper is to understand the probable...
In this paper, we propose a network performance monitoring method which can measure delay of each network using the RTCP(Real-time Transport Control Protocol) timestamp fields to detect a trouble section in interworking environment. According to the increment of real-time multimedia service provision, network performance monitoring method is necessarily needed for QoS management of real-time services...
Best effort QoS provision is ensured through efficient management of the available network resources referred to as radio resource management (RRM). They are to be properly utilised to provide highly demanding services such as Web-based multimedia content and peer- to-peer networking. RRM is one key component of packet data services to ensure end-to - end QoS requirements efficiently. It is essential...
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