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In Building Solutions (IBS) are a well-established approach to providing indoor cellular coverage. The increasing wireless mobile broadband traffic and the fact that most broadband data is consumed indoors increases the interest to understand the IBS capacity potential. For a given available spectrum, a straightforward capacity solution is cell-splitting. In this paper, measurement results from a...
The exponential increase in capacity and data rate demands, along with the diversification of use cases and verticals that are planning to use cellular radio access networks (RANs) to provide connectivity, has prompted the development of the fifth generation (5G) of radio access technology. Traffic steering, which aims at optimum mapping of the data flows to the appropriate RAN access points (APs),...
We study in this work user impatience by adopting a realistic realization: a user gets impatient when its throughput falls below a certain threshold for a given patience duration. We model such a behavior in a cellular network, transporting elastic flows, for a realistic user configuration with random arrivals, following a Poisson process, and departure after a finite duration, either upon transfer...
Massive M2M (Machine-to-Machine) Communications has been envisioned as a corner stone for next-generation 5G Communications. In addition, LTE has been evolving to accommodate increasing number of IoT devices with Machine Type Communications (also known as LTE-M) and Narrow-Band IOT (NB-IOT). Current cellular network systems are originally engineered for human-to-human communications. So the system...
Resource Allocation (RA) is one of the crucial elements in Long Term Evolution (LTE) networks, which has a tremendous impact on the network performance. However, complexity of the RA problem increases when both Carrier Aggregation (CA) and Multiple-Input Multiple-Output (MIMO) are enabled in the network. CA is a key functionality for LTE- Advanced (LTE-A) that enables Mobile Networ Operators (MNOs)...
This paper investigates dynamic spectrum resource utilization in dense stadium. The proposed scheme flexibly aggregates intra-site and inter-site resources for UEs taking into account various factors such as traffic demand, network load condition, channel quality. Extensive simulation results are presented to validate its performance. The results may shed some light on the design...
In this study, we describe the behavior of LTE over the sea and investigate the problem of radio resource block allocation in such SINR limited maritime channels. For simulations of such sea environment, we considered a network scenario of Bosphorus Strait in Istanbul, Turkey with different number of ships ferrying between two ports at a given time. After exploiting the network characteristics, we...
LTE/LTE-A is high speed wireless communication technology which got evolved from 2G/3G. LTE provides very high throughput in uplink and downlink and hence it is attracting more and more subscribers every day. This paper analyzes the performance of real time LTE network of two different LTE service providers through drive test. Test cases were performed under dynamic environment where the test user...
This paper explains the performance of voice over LTE system using different voice codec. LTE is the third generation partnership program 3GPP communication system which is wireless in nature and is also the first IP based system. VoLTE (Voice over LTE) is expected to be deployed in the near future for providing voice services. It's ability to reach high throughput is promising in both downlink and...
Due to the requirement of high capacity to access broadband service as well as high spectrum efficiency, the frequency reuse of one is targeted to be applied in LTE network planning. But it can lead to a worse inter-cell interference levels experienced especially by users located at the cell edge area. Soft Frequency Reuse (SFR) is considered as an effective frequency reuse scheme for inter-cell interference...
Mobile phone users today require high-speed data communications to be able to enjoy some services. To always provide the best service to customers and anticipate the overload on the network, there needs to expand capacity with the implementation of LTE technology in areas of overload. Bandung including densely populated cities and buildings, which in doing expand network capacity is constrained by...
In the coexistence scenario of NB-IoT and LTE system, several factors affect the evaluating indicators of system performance. Considering the narrow bandwidth character of NB-IoT system, the simulation result would be over-optimistic if the evaluation method about ACLR and ACS in coexistence study of LTE system is still used. In this paper, a new evaluation method about ACLR and ACS is proposed aimed...
In this paper, a flow-level traffic model for evaluating Long Term Evolution Advanced networks is presented. The model includes the characteristics of the Transmission Control Protocol version Cubic. Live network measurements of flow and user data volumes in the busy hour were used to parameterize the presented statistical model. Furthermore, an approach for combining LTE-Advanced system-level simulation...
Downlink throughput performance in Long Term Evolution - Advanced (LTE-A) networks has been widely investigated by many simulation studies. However, these studies generally assume that users are uniformly distributed in regularly arranged hexagonal cells. Analytical models and methods of stochastic geometry have been applied to wireless networks to consider the effects of spatial configuration of...
Long Term Evolution (LTE) wireless communication system has adopted Orthogonal Frequency Division Multiple Access (OFDMA) technology to provide downlink transmissions to multiple User Equipment (UE) in a single transmission time interval. In OFDMA, UEs provide quantized channel quality information, called channel quality indicator (CQI), to the base station. CQI feedback is then used at the base station...
Relaying is one of the promising approaches for extending service coverage and improving quality of service. The self-backhauling of relays towards a serving (donor) eNode B provides cost-effective solution for deployment scenarios where conventional backhauling is either costly or unavailable. The end-to-end throughputs achievable by users served by relays are dependent on achievable throughputs...
Dynamic adaptive video over HTTP (DASH) is fast becoming the protocol of choice for content providers for their online video streaming delivery. Concurrently, dependence on cellular Long Term Evolution (LTE) networks is growing to serve user demands for bandwidth-hungry applications, especially video. Each LTE base station's (eNodeB) scheduler assigns wireless resources to individual clients. Several...
Today, data traffic grows in a more dynamic way than voice traffic and it requires high data rates to support advanced services and applications. Mobile operators must deal with this amount of traffic and must meet user requirements. They must provide more throughput on the transmission path. One of the ways this can be done is to use LTE-Advanced with the carrier aggregation technique. This is one...
In this paper we explore uplink connection performances in a LTE Heterogeneous Network (HetNet). We perform a set of experiments in two different LTE HetNet configurations and focus on uplink coverage and capacity within an office building. The current results are obtained in single user equipment (UE) environment but the recommendation is valid also for multi-UE environment. The analysis is based...
The efficient usage of scarce radio resource is the key factor of wireless networks, however there are some spare radio resource not being used such as the guard band for satellite system. In this paper, to reuse the guard band of satellite system, a new resource allocation scheme consisted of sub-carrier assignment and power allocation is proposed for LTE system to maximize its maximum throughput...
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