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Great efforts have been driven to improve the optimal decision for network selection, which is significant for vertical handover to meet user's rapidly increased requirements. Unfortunately, the instability of the basic decisive parameters is usually ignored, resulting in a high misjudgement ratio. Therefore, this paper proposed a novel parameter estimation algorithm to bridge the observed values...
This paper investigates the problem of network selection in access control for heterogeneous networks of WCDMA/WLAN. To optimize the network selection decision policy, an optimization equation is defined with the objective of maximizing the total rewards, and then a new Q-learning Based Network Selection (QBNS) mechanism is proposed to solve the equation. In the QBNS Algorithm, Q-learning algorithm...
With the development smart pipe, in recent years, the PCC architecture attracts more and more attention. In this paper, firstly, it analyzes the existing standardized architecture based on the PCC, and the research of QoE at home and abroad, and then points out of the existing shortcomings in the PCC architecture; Secondly, it introduces QoE to the PCC architecture QoE innovatively, and proposes the...
Web service is an application program, which is based on internet, distributed, self-included, self-described and modular. It possesses the attributes of well encapsulation and loose coupling. With the prevailing of Web service, how to select a set of services among large body of services with the same function in order to make the Composite Web Service achieve better performance and better quality...
The 3rd generation partnership project (3GPP) selects IP multimedia subsystem (IMS) to provide multimedia services for various access networks. Work in this paper is to extend the supported access networks, such as 3GPP and wireless local area network, to worldwide interoperability for microwave access (WiMAX) on quality of service (QoS) Management. Basing on description of tight-coupled interworking...
Trunking communication system based on IP network is an innovation of the traditional trunking communication system and IP network. The IP network employs a best effort service, which is dissatisfied with the demands of the trunking communication system's quality of service (QoS) on the transfer network. In this paper the structure of the system is illustrated. And also the total delay, the key factor...
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