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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...
Wireless networks have gone through several years of evolution until now and will continue to do so in order to cater for the varying needs of users. These demands are expected to grow in the future, both in size and variability. Hence, the 5G technology considers these variabilities in service demands and potential data explosion which could accompany users' demands at the core of its architecture...
The ever-increasing demand for multimedia contents has imposed severe traffic overload pressure on mobile network operators (MNOs). Cooperative data offloading is a promising approach to alleviate the traffic congestion, which leverages the device-to-device (D2D) communications among mobile users. However, mobile users may not be obligated to participate in cooperative data offloading, since it will...
We consider network utility maximization problems over heterogeneous cellular networks (HetNets) that permit dual connectivity. Dual connectivity (DC) is a feature that targets emerging practical HetNet deployments that will comprise of non-ideal (higher latency) connections between transmission nodes, and has been recently introduced to the LTE-Advanced standard. DC allows for a user to be simultaneously...
We introduce a new optimization framework, built over a discounted-rate metric, that captures the sensitivities of wireless users to time-variations in their fairness measure of rate allocations. The resulting, so-called, Discounted-Rate Utility Maximization (DRUM) formulation not only accommodates traditional long-term and less-explored instant fairness concepts in its extremes, but also encompasses...
The spread in the use of wireless services resulted in a remarkable growth of power consumption for telecommunication systems to satisfy the continuous growth of data demand. On the other hand, the emergence of smart grids and the expansion of low-cost distributed powering solutions represented an opportunity to enhance the energy efficiency and improve communication systems' costs. In this paper,...
Effective ways to address spectrum shortage by sharing cellular spectrum among the operators are constantly explored. Inter-Operator spectrum sharing, where operators dynamically share their licensed spectrum, when the network capacity requirement varies based on user access is an option to address this issue. The emerging licensed Co-Primary spectrum sharing, a commonly shared spectrum band used...
Resource allocation is an important topic with a wide range of applications. In many practical cases, users and resource suppliers are players in the market. As a result, much effort has been made in applying market mechanisms (such as auction and game-theoretic results) to resource allocation. The conventional approach in such studies is to consider cases where users' resource demands are fixed....
Non-orthogonal multiple access (NOMA) can increase the spectral efficiency and could play an important role in improving the capacity of 5G networks. In this paper, an optimization problem is formulated to maximize the overall sum rate in a sub-carrier based NOMA system. The optimal transmission power of each user is obtained based on the users' instantaneous channel state information under the total...
Transmission of layered source information, such as scalable video coding (SVC), over heterogenous wireless networks is considered in this work. Scalable transmission enables dynamic adaption of source information to the condition of user equipments, and thus is suitable for heterogenous networks in which the transmission link quality varies substantially. Leveraging tools in stochastic geometry,...
In next generation wireless mobile networks, network virtualization will become an important key technology. In this paper, we firstly propose a resource allocation scheme for enabling efficient resource allocation in wireless network virtualization. Then, we formulate the resource allocation strategy as an optimization problem, considering not only the revenue earned by serving end users of virtual...
Network utility theory has been extensively employed for resource management purposes. However, traditional utility functions cannot support attributes that affect the resource allocation, such as mobility or more advanced traffic models. Especially in the context of a heterogeneous wireless network, transient parameters can have varying effects on each access network type. This work proposes a new...
With the dense deployment of femtocell, interference control is becoming a major challenge for resource management in femtocell networks. Most of the existing works focus on improving throughput or reducing the total power consumption respectively, neglecting the energy consumption. In this paper, we investigate energy efficiency aspect in a femtocell network and propose an interference-mitigation...
In this paper, we propose a hybrid decision algorithm for the selection of the access in multi-operator networks environment, where competing operators share their radio access networks to meet traffic and data rate demands. The proposed algorithm guarantees the user satisfaction and a global gain for all cooperating operators. Simulation results prove the efficiency of the proposed scheme and show...
In this paper, a prioritized radio resource allocation scheme is studied and analyzed for integrated services in terms of the connection-level QoS. The contributions of our work are threefold. First, a traffic model based on multi-dimensional Markov chain is developed to analyze the performance of integrated services. Second, considering the traffic characteristic of mobile users in different period,...
Channel allocation scheme on heterogeneous wireless networks is studied. The contributions of our work are threefold. First, by using network queuing theory, traffic overflowing based channel allocation scheme is presented and analyzed for heterogeneous wireless networks in terms of the connection-level QoS. To decrease channel interference, traffic overflowing are restricted within pre-defined channels...
In this paper, we study an emerging type of wireless network - Hybrid Wireless Networks (HWNs). A HWN consists of an infrastructure wireless network (e.g., a cellular network) and several ad hoc nodes (such as a Mobile ad hoc network). Forming a HWN is a very cost-effective way to improve wireless coverage and the available bandwidth to users. Specifically, in this work we investigate the issue of...
In this paper, a resource management approach based on IEEE1900.4 architecture for heterogeneous wireless network is given. The rest of the paper is organized as follows. In Section II, the radio resource management approach consisting inter-network resource allocation, RAN resource reservation and access network selection in heterogeneous network is present.
In this paper, we investigate the mobile P2P file-sharing problem, and proposed a mobile P2P content distribution architecture. Due to mobile specific influence factors, a hybrid architecture has been employed. We assume that the P2P mobile terminal can publish, index and retrieve resources on the Index Server, and collect the real-time state and cache content resource through Resource Management...
There is a problem of unfairness in allocation of radio resources among heterogeneous mobile terminals in heterogeneous wireless networks. Low-capability mobile terminals (such as single-mode terminals) suffer high call blocking probability whereas high-capability mobile terminals (such as quad-mode terminals) experience very low call blocking probability, in the same heterogeneous wireless network...
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