Ye Ouyang

A study of throughput for Nb, Mc and Nc interface in UMTS core network

Currently there are many practical tools or theoretical methods to plan and dimension GSM or UMTS radio networks but overlooks the algorithms for core networks because of its complexity. This paper introduces an algorithm for traffic and throughput dimensioning for Nb, Mc and Nc interfaces in UMTS core network. The analysis is based on the traffic and throughput generated or absorbed in the interfaces of network entities in UMTS network. This paper is targeted at helping wireless carriers plan and dimensioning their UMTS core networks.

A study of throughput for Iu-CS and Iu-PS interface in UMTS core network

Current literature provides many practical tools or theoretical methods to plan and dimension GSM or UMTS radio networks but overlooks the algorithms of network plan and dimensioning for core networks. This paper introduces an algorithm for traffic and throughput dimensioning for UMTS core network. A case study is provided to verify the algorithms created for UMTS core network. This paper is aimed at helping wireless carriers plan and dimensioning their 3G core networks.

A novel methodology of data analytics and modeling to evaluate LTE network performance

Big Data and LTE are two hot topics in their respective field. Is there a synergy effect between the two techniques? Traditionally various simulation based approaches are developed to study wireless network performance. However simulation has its own limitations. In this paper, the authors develop a methodology of data analytics and modeling to evaluate LTE network performance based upon traffic measurements and service growth trends. The overall model is finally validated and shows high accuracy, robustness, and reliability.

A study of LTE network performance based on data analytics and statistical modeling

Various simulation based approaches are developed to study wireless network performance and capacity traditionally. However, these simulation based approaches has its own limitations in supervised and unsupervised learning. Since big data techniques become more available, using big data techniques to understood the huge amount of the LTE network measurements and diagnosis data, evaluate and predict the LTE network capacity and performance becomes a very promising approach. This paper investigates the LTE network performance from the aspect of data analytics and statistical modeling. In this paper, we develop a methodology of data analytics and modeling to evaluate LTE network performance based on traffic measurements and service growth trends. A relational algorithm is developed to obtain the relationship between LTE network resources and LTE KPIs and a forecasting algorithm is developed to trend the network resource consumptions based on traffic and service growth. The numerical results show a high accuracy, robustness, and reliability of the proposed methodology.

A study on evolving the architecture of circuit switched domain in UMTS core networks

Most mobile operators, particularly those operators with 2G GSM networks, prefer UMTS R99 or R4 as their 3G standard to evolve and upgrade their legacy 2G mobile networks. The UMTS technique, as a smooth replacement for GSM technique, provides an evolved path for the mobile operators to deploy the next generation IP based soft-switch mobile core networks. This paper first describes the basic architecture and topology of UMTS R4 core network and introduces two options in network planning: flat structure or layered structure. To propose an evolution path, the paper then suggests a “three layer structure” solution to seamlessly converge UMTS R4 core network with legacy GSM core network. The proposed solution approach achieves the all-IP vision and is capable of convergence with IMS and EPC.

Optimizing the Traffic of Voice Core Domain in UMTS Network through RNC Re-homing

The past few years have seen mobile operators transition to next-generation mobile networks, specifically from third-generation networks 3G to long term evolution LTE. This paper describes the basic architecture and topology of UMTS R4 core network and introduces two options in network planning, i.e., flat structure or layered structure. This paper introduces the re-homing of radio network controller RNC and base station controller BSC and studies the impact on the performance of voice core of UMTS networks. The proposed RNC re-homing models are created and analyzed for voice core of UMTS networks. The paper concludes that the appropriate RNC re-homing optimizes the traffic of voice core in UMTS network.

A prediction model of merger & acquisitions in the US telecommunications industry — A case study of a recent M&A in wireless communications sector

The “1997 Merger Guidelines” articulates the analytical framework that Department of Justice (DoJ) and Federal Trade Commission (FTC) use to review merger and acquisition cases. To better apply the guidelines to the M&A cases in telecommunication industry, the authorities and merging companies in telecommunications industry have a need to translate the provisions of the general guidelines to the specific situation of the telecom sector. Based on the telecommunication M&A cases between 1996 and 2009, this paper develops a model to assess the predictability of prospective M&A outcome from the DoJ/FTC review process. The model could be a good leading indicator for the potential merging companies and the decision makers in M&A reviews. The model while integrates the M&A criteria based on the M&A circumstances in telecommunication industry, it does not eliminate the need for exercise of judgment from the evaluation of mergers under the antitrust laws. A recent Merger case between Cisco and Starent Networks is evaluated as a case study.

THE IMPACT OF CELL SITE RE-HOMING ON THE PERFORMANCE OF UMTS CORE NETWORKS

Mobile operators currently prefer optimizing their radio networks via re-homing or cutting over the cell sites in 2G or 3G networks. The core network, as the parental part of radio network, is inevitably impacted by the re-homing in radio domain. This paper introduces the cell site re-homing in radio network and analyzes its impact on the performance of GSM/UMTS core network. The possible re-homing models are created and analyzed for core networks. The paper concludes that appropriate re-homing in radio domain, using correct algorithms, not only optimizes the radio network but also helps improve the QoS of the core network and saves the carriers’ OPEX and CAPEX on their core networks.

A Dimensioning Study for UMTS Core Networks

Current literature provides many practical tools and theoretical methods to design, plan, and dimension Global System for Mobile Communications GSM and Universal Mobile Telecommunications System UMTS radio networks but overlooks the algorithms of network planning and dimensioning for core networks of GSM, UMTS and IP Multimedia Subsystem IMS. This paper introduces an algorithm for traffic, bandwidth and throughput dimensioning of the network entities in the UMTS core network, based on the traffic and throughput generated or absorbed in the interfaces of the network entities. A case study is provided to verify the algorithms created for UMTS core network. This paper helps UMTS network operators dimension and build an optimum network to deliver the best quality of service for users. The algorithms developed in the paper have been successfully applied in dimensioning a nationwide UMTS network in North Africa and adopted in an optimization tool by a mobile operator in the United States in 2008-2009.