44 research outputs found

    3G migration in Pakistan

    Get PDF
    The telecommunication industry in Pakistan has come a long way since the country\u27s independence in 1947. The initial era could be fairly termed as the PTCL (Pakistan Telecommunication Company Limited) monopoly, for it was the sole provider of all telecommunication services across the country. It was not until four decades later that the region embarked into the new world of wireless communication, hence ending the decades old PTCL monopoly. By the end of the late 1990\u27s, government support and international investment in the region opened new doors to innovation and better quality, low cost, healthy competition. Wireless licenses for the private sector in the telecommunication industry triggered a promising chain of events that resulted in a drastic change in the telecommunication infrastructure and service profile. The newly introduced wireless (GSM) technology received enormous support from all stakeholders (consumers, regulatory body, and market) and caused a vital boost in Pakistan\u27s economy. Numerous tangential elements had triggered this vital move in the history of telecommunications in Pakistan. Entrepreneurs intended to test the idea of global joint ventures in the East and hence the idea of international business became a reality. The technology had proven to be a great success in the West, while Pakistan\u27s telecom consumer had lived under the shadow of PTCL dominance for decades and needed more flexibility. At last the world was moving from wired to wireless! Analysts termed this move as the beginning of a new era. The investors, telecommunication businesses, and Pakistani treasury prospered. It was a win-win situation for all involved. The learning curve was steep for both operators and consumers but certainly improved over time. In essence, the principle of deploying the right technology in the right market at the right time led to this remarkable success. The industry today stands on the brink of a similar crossroads via transition from second generation to something beyond. With the partial success of 3G in Europe and the USA, the government has announced the release of three 3G licenses by mid 2009. This decision is not yet fully supported by all but still initiated parallel efforts by the operators and the vendors to integrate this next move into their existing infrastructure

    Femtocell deployment; next generation in cellular systems

    Get PDF
    The final Bachelor鈥檚 Thesis that is shown below has such a final purpose of giving an overview of the inclusion of the so-called Femtocells (or Home Node B) in the current cellular systems. The main objective is to give a clear but simple idea about the concepts of Femtocells, as well as to explain the benefits and disadvantages of the mass uses of these services both for consumers and associated companies with this phenomenon. In this text it is also possible to find a brief review of wireless technologies throughout the history of telecommunications, as well as an introduction to the more current wireless technologies, with a special interest in the concept of cellular systems. In the last chapter a simple mathematical explanation of the key issue of interference between Femtocells and macrocellular networks is presented, with a brief argument about possible solutions

    Femtocell deployment; next generation in cellular systems

    Get PDF
    The final Bachelor鈥檚 Thesis that is shown below has such a final purpose of giving an overview of the inclusion of the so-called Femtocells (or Home Node B) in the current cellular systems. The main objective is to give a clear but simple idea about the concepts of Femtocells, as well as to explain the benefits and disadvantages of the mass uses of these services both for consumers and associated companies with this phenomenon. In this text it is also possible to find a brief review of wireless technologies throughout the history of telecommunications, as well as an introduction to the more current wireless technologies, with a special interest in the concept of cellular systems. In the last chapter a simple mathematical explanation of the key issue of interference between Femtocells and macrocellular networks is presented, with a brief argument about possible solutions

    Femtocell Deployment; next generation in Cellular Systems

    Get PDF
    The final Bachelor's Thesis that is shown below has such a final purpose of giving an overview of the inclusion of the so-called Femtocells (or Home Node B) in the current cellular systems. The main objective is to give a clear but simple idea about the concepts of Femtocells, as well as to explain the benefits and disadvantages of the mass uses of these services both for consumers and associated companies with this phenomenon. In this text it is also possible to find a brief review of wireless technologies throughout the history of telecommunications, as well as an introduction to the more current wireless technologies, with a special interest in the concept of cellular systems. In the last chapter a simple mathematical explanation of the key issue of interference between Femtocells and macrocellular networks is presented, with a brief argument about possible solutions

    Assessment of spectral efficiency about 900 MHz using GSM and CDMA technologies for mobile cognitive radio

    Full text link

    A Review of Cellular Networks: Applications, Benefits and Limitations

    Get PDF
    Over decades the world has witnessed stepwise evolution in Cellular networks technology and mobile network industry which have transformed nation鈥檚 economy and created job opportunities since 1970. The stepwise evolution of the cellular networks from first generation (1G) to fifth generation (5G) have shown tremendous increase in technology, benefits, user demand and applications.聽 As new generation of cellular network unfold, the challenges and limitations of preceded generations are being tackled as always depicted in the design architecture of each new generation. The first generation (1G) cellular network was based on analogue and was able to cater for mobile voice transmission but posed some challenges in terms of quality of service and security of network. Second generation (2G) came with the introduction of digitally encrypted technology and greater security for sender and receiver with services such as text messages and MMS. Third generation (3G) was developed to offer high speed data and multimedia connections to subscribers.聽 Fourth generation evolves from 3G with higher data rate, lower latency, greater spectral efficiency and simple protocol architecture with efficient multicast than its predecessors.聽 Fifth-generation (5G) networks聽 is being deployed to meet growing demands for data from consumer and industrial users聽 and聽 to enable the use of advanced technologies聽 such as smart city applications, autonomous vehicles and navigation. The envisioned sixth generation (6G) of cellular network is expected to witness an unparalleled revolution that would significantly distinguish it from the existing generations and will drastically re-shape the wireless evolution from "connected thing to connected intelligence. This paper provides a comprehensive review of cellular networks applications and challenges from 1G to 6G. Keywords: 1G, 2G, 3G, 4G, 5G, 6G, Applications 聽Benefits, and Limitations DOI: 10.7176/NCS/11-04 Publication聽date: December聽31st聽202

    Device Identification from Network Traffic Measurements - A HTTP User Agent Based Method

    Get PDF
    The proliferation of mobile Internet in recent years has created an increasing need to understand the usage of the mobile services. With widespread adoption of the Internet capable mobile handheld devices, knowledge about mobile Internet usage is beneficial from different aspects of the stakeholders. A key challenge is that the factual information available on User Agent (UA) based device identification from IP traffic measurements is limited. The objective of our research is two folded; to develop a tool to identify mobile devices based on the HTTP UA obtained from the network traffic measurements and to profile mobile Internet usage in Finland. We observe that the tool can be developed by using a device description repository (DDR) and its API to interact with the repository and extract device related information. Moreover, the results from the DDR implementation can be improved by enhancing its original output. With the identification results, we provide descriptive statistics to aid in profiling the usage of the mobile Internet in Finnish mobile networks. Wireless Universal Resource File (WURFL) DDR based tool produced accurate identification of the devices from the HTTP UA strings. However, identification of the devices from the UA strings generated by the applications other than the web browsers required additional programming. The resulting enhanced WURFL tool was able to improve the device identification results roughly by 15% points with our dataset. Based on the assessment of the enhanced WURFL tool, we observe that roughly 94% of the total UA strings subjected to the analysis were identified correctly. The share of incorrectly identified UA strings was about 0.5%. The data analysis results indicate that the majority of mobile handset traffic is generated by handsets with advanced capabilities such as 3G and the touchscreen, manufactured by numerous brands of mobile devices with different operating systems. The results from the identification of these devices and device features could be utilized by the operators to support the pricing and business development

    Myspeedtest: active and passive measurements of cellular data networks

    Get PDF
    As the number and diversity of applications available to mobile users increases, there is an increasing need for developers, network service providers, and users to understand how users perceive the network performance of these applications. MySpeedTest is a measurement tool that actively probes the network to determine not only TCP throughput and round trip time, but also the proximity to popular content providers, IP packet delay variation, and loss. It also records other metadata that could affect user experience, such as signal strength, service provider, connection type, battery state, device type, manufacturer, time of day, and location. The tool also takes passive measurements of the applications installed on the device and the network usage of these applications. My SpeedTest is available on the Google Play Store and currently has 1300+ active users. This thesis presents the design and implementation of MySpeedTest as well as effect of metrics like latency and IP packet delay variation on performance.MSCommittee Chair: Nick Feamster; Committee Member: Patrick Traynor; Committee Member: Raghupathy Sivakuma

    Cost based optimization for strategic mobile radio access network planning using metaheuristics

    Get PDF
    La evoluci贸n experimentada por las comunicaciones m贸viles a lo largo de las 煤ltimas d茅cadas ha sido motivada por dos factores principales: el surgimiento de nuevas aplicaciones y necesidades por parte del usuario, as铆 como los avances tecnol贸gicos. Los servicios ofrecidos para t茅rminales m贸viles han evolucionado desde el cl谩sico servicio de voz y mensajes cortos (SMS), a servicios m谩s atractivos y por lo tanto con una r谩pida aceptaci贸n por parte de usuario final como, video telephony, video streaming, online gaming, and the internet broadband access (MBAS). Todos estos nuevos servicios se han convertido en una realidad gracias a los avances t茅cnologicos, avances tales como nuevas t茅cnicas de acceso al medio compartido, nuevos esquemas de codificiaci贸n y modulaci贸n de la informaci贸n intercambiada, sistemas de transmisi贸n y recepci贸n basados en m煤ltiples antenas (MIMO), etc. Un aspecto importante en esta evoluci贸n fue la liberaci贸n del sector a principios de los a帽os 90, donde la funci贸n reguladora llevado a cabo por las autoridades regulatorias nacionales (NRA) se ha antojado fundamental. Uno de los principales problemas tratados por la NRA espc铆fica de cada naci贸n es la determinaci贸n de los costes por servicios mayoristas, esto es los servicios entre operadores de servicios m贸villes, entre los que cabe destacar el coste por terminaci贸n de llamada o de inteconexi贸n. El servicio de interconexi贸n hace posible la comunicaci贸n de usuarios de diferente operadores, as铆 como el acceso a la totalidad de servicios, incluso a aquellos no prestados por un operador en concreto gracias al uso de una red perteneciente a otro operador, por parte de todos los usuarios. El objetivo principal de esta tesis es la minimizaci贸n de los costes de inversi贸n en equipamiento de red, lo cual repercute en el establecimiento de las tarifas de interconexi贸n como se ver谩 a lo largo de este trabajo. La consecuci贸n de dicho objetivo se divide en dos partes: en primer lugar, el desarrollo de un conjunto de algoritmos para el dimesionado 贸ptimo de una red de acceso radio (RAN) para un sistema de comunicaciones m贸villes. En segundo lugar, el dise帽o y aplicaci贸n de algoritmos de optimizaci贸n para la distribuci贸n 贸ptima de los servicios sobre el conjunto de tecnolog铆as m贸viles existentes (OSDP). El modulo de dise帽o de red proporciona cuatro algoritmos diferenciados encargados del dimensionado y planificaci贸n de la red de acceso m贸vil. Estos algoritmos se aplican en un entorno multi-tecnolog铆a, considerando sistemas de segunda (2G), tercera (3G) y cuarta (4G) generaci贸n, multi-usuario, teniendo en cuenta diferentes perfiles de usuarios con su respectiva carga de tr谩fico, y multo-servicio, incluyendo voz, servicios de datos de baja velocidad (64-144 Kbps), y acceso a internet de banda ancha m贸vil. La segunda parte de la tesis se encarga de distribuir de una manera 贸ptima el conjunto de servicios sobre las tecnolog铆as a desplegar. El objetivo de esta parte es hacer un uso eficiente de las tecnolog铆as existentes reduciendo los costes de inversi贸n en equipamiento de red. Esto es posible gracias a las diferencias tecnol贸gicas existente entre los diferentes sistemas m贸viles, que hacen que los sistemas de segunda generaci贸n sean adecuados para proporcionar el servicio de voz y mensajer铆a corta, mientras que redes de tercera generaci贸n muestran un mejor rendimiento en la transmisi贸n de servicios de datos. Por 煤ltimo, el servicio de banda ancha m贸vil es nativo de redes de 煤ltima generad贸n, como High Speed Data Acces (HSPA) y 4G. Ambos m贸dulos han sido aplicados a un extenso conjunto de experimentos para el desarrollo de an谩lisis tecno-econ贸micos tales como el estudio del rendimiento de las tecnolog铆as de HSPA y 4G para la prestaci贸n del servicio de banda ancha m贸vil, as铆 como el an谩lisis de escenarios reales de despliegue para redes 4G que tendr谩n lugar a partir del pr贸ximo a帽o coinicidiendo con la licitaci贸n de las frecuencias en la banda de 800 MHz. As铆 mismo, se ha llevado a cabo un estudio sobre el despliegue de redes de 4G en las bandas de 800 MHz, 1800 MHz y 2600 MHz, comparando los costes de inversi贸n obtenidos tras la optimizaci贸n. En todos los casos se ha demostrado la mejora, en t茅rminos de costes de inversi贸n, obtenida tras la aplicaci贸n de ambos m贸dulos, posibilitando una reducci贸n en la determinaci贸n de los costes de provisi贸n de servicios. Los estudios realizados en esta tesis se centran en la naci贸n de Espa帽a, sin embargo todos los algoritmos implementados son aplicables a cualquier otro pa铆s europeo, prueba de ello es que los algoritmos de dise帽o de red han sido utilizados en diversos proyectos de regulaci贸n
    corecore