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In cellular mobile wireless networks, nonlinear channel fading is always a critical factor which will scientifically deteriorate the Quality of Service (QoS) for the users. However, it is difficult to describe the nonlinear channel fading by precise mathematical model because of its complexity. So, the control of wireless networks becomes an especial tough work. In this paper, a power and rate control...
Existing telemedicine systems that rely on single telecommunication network are unable to guarantee the user is always connected to healthcare professionals anywhere and anytime. The use of heterogeneous wireless networks can overcome this issue. However, the existing handover schemes are not efficient enough for telemedicine application. This is because the preference of telemedicine user might change...
Inter-Cell Interference Coordination (ICIC) techniques are proposed as solutions to alleviate the negative impact of interference on system performance, while enhancing the provided Quality of Service (QoS). Typically, the available bandwidth is divided into inner and edge sub-bands. Users are also classified into interior and edge users. The available resources in each zone are exclusively allocated...
The Internet of things (IoT) will entail massive number of wireless connections with sporadic traffic patterns. To support the IoT traffic, several technologies are evolving to support low power wide area (LPWA) wireless communications. However, LPWA networks rely on variations of uncoordinated spectrum access, either for data transmissions or scheduling requests, thus imposing a scalability problem...
A Mobile Patient Monitoring System (MPMS) acquires patient's biosignals and transmits them using wireless network connection to the decision making module or healthcare professional for the assessment of patient's condition. An important research challenge in the MPMS is how to satisfy Quality of Service (QoS) requirements of biosignals delivery in the environment characterized by patient mobility,...
Wireless systems such as Mobile Random Systems grew to become ubiquitous. Further, because of technology innovations, wireless systems can accommodate multimedia streaming applications. Consequently wireless systems moved from simple bandwidth to loss-tolerant, delay-sensitive and bandwidth-intensive multimedia applications. As people walks of existence changed by using smart phones, the wireless...
The paper proposes to use a solution based on software-defined networks (SDN) to control traffic flows in wireless local area networks (Wi-Fi). The paper examines the testing methods for a software-configurable wireless local area network based on the model network of the St. Petersburg State University of Telecommunications. Classify traffic based on DSCP values in the IP-headers of packets. After...
This paper proposes a model for radio resource management in virtualised radio access networks, based on the criterion of proportional fairness, which is also adapted to deal with the situations when there is not enough capacity to serve all subscribers with an acceptable level of service, the so-called the extreme case. A single virtual network operator providing four different classes of services...
Mobile networked robots are distributed systems controlled by a distant station i.e, the controller is implemented on a control station. The main mission of the mobile robot is reaching a target position starting from an initial one while receiving the instructions from the control station via a wireless network. The wireless network is characterized by a stochastic behavior and is sensitive to perturbations...
The different benefits of WLANs have achieved their massive implementation in different sectors: domestic business and intelligent cities, among others. However, security in data transmission is one of their biggest problems, as they are more susceptible to suffer different types of wireless network attacks. This disadvantage motivates users to use Virtual Private Networks (VPN) in order to reinforce...
Multimode terminals running multiple services at the same time are increasingly common, in response to this phenomenon, a network selection algorithm based on group decision making for heterogeneous wireless networks is presented in this paper. The algorithm considers each service from the terminal as a decision-maker, and obtains the weight vector of all network attributes for each service by the...
To support the emerging next era of mobile wireless networks, researchers have made a great deal of efforts in promising techniques in multimedia services — the statistical quality of service (QoS) technique, which has been proved to be effective in statistically guaranteeing delay-bounded video transmissions over the time-varying wireless channels. On the other hand, as the 5G-promising techniques,...
To provide better usage of spectrum, regulators, such as the FCC and Ofcom, have been considering how to share spectrum between operators and also between different types of network. Two important aspects of any mobile service that need to be considered are how to ensure the appropriate level of service to individual users and how to minimize power consumption. This paper addresses the issue by applying...
Delivering committed traffic Quality of Service (QoS) per Service Level Agreement (SLA) requires support of critical intelligent traffic management features in LTE eNodeB (and future 5G access nodes), such as Uplink Traffic Shaping and Congestion and Admission Control (CAC). This paper highlights the motivation and merits of uplink traffic shaping in preserving QoS levels per traffic categories over...
The Heterogeneous Wireless Network is a hierarchical structure of different wireless networks. The wireless networks are differ in terms of network coverage, capacity, bandwidth, technology and network operator. In such an environment when a mobile terminal equipped with multiple network interfaces leaves one wireless network and connect to another different wireless network, a Vertical Handoff (VHO)...
Motivated by applications in competitive WiFi sensing, and competition to grab user attention in social networks, the problem of when to arrive at/sample a shared resource/server platform with multiple players is considered. Server activity is intermittent, with the server switching between ON and OFF periods alternatively. Each player spends a certain cost to sample the server state, and the per-player...
With the rapid development of WLAN, a surge in the number of network users and high-speed data exchange highlight the importance of efficient initial access of MAC layer. The majority of initial access of MAC layer is based on ALOHA or CSMA/CA. With the increase of network traffic, the number of collisions is growing rapidly, resulting in speedy decreasing access success rate and normalized throughput...
We present a distributed algorithm for joint power control, routing and scheduling in multihop wireless networks. The algorithm also provides for Quality of Service (QoS) guarantees, namely, end-to-end mean delay guarantees and hard deadline guarantees, for different users. It is easily implementable and works by giving local dynamic priority to flows requiring QoS, the priority being a function of...
Android is an operating system which is available in smartphones and tablets. It uses touch gestures which correlate as activities to perform the operations to embed with the real world actions. Recent technologies adapts android as the primary element because of its salient features and open environment which could be customized in high technological devices. Another secured feature of Android is...
To support the emerging next era of mobile wireless networks, researchers have made a great deal of efforts in promising techniques in multimedia services - the statistical quality-of-service (QoS) technique, which has been proved to be effective in statistically guaranteeing delay-bounded video transmissions over the time-varying wireless channels. On the other hand, as one of the 5G-promising techniques,...
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