810 research outputs found
Cross-layer scheduling and resource allocation for heterogeneous traffic in 3G LTE
3G long term evolution (LTE) introduces stringent needs in order to provide different kinds of traffic with Quality of Service (QoS) characteristics. The major problem with this nature of LTE is that it does not have any paradigm scheduling algorithm that will ideally control the assignment of resources which in turn will improve the user satisfaction. This has become an open subject and different scheduling algorithms have been proposed which are quite challenging and complex. To address this issue, in this paper, we investigate how our proposed algorithm improves the user satisfaction for heterogeneous traffic, that is, best-effort traffic such as file transfer protocol (FTP) and real-time traffic such as voice over internet protocol (VoIP). Our proposed algorithm is formulated using the cross-layer technique. The goal of our proposed algorithm is to maximize the expected total user satisfaction (total-utility) under different constraints. We compared our proposed algorithm with proportional fair (PF), exponential proportional fair (EXP-PF), and U-delay. Using simulations, our proposed algorithm improved the performance of real-time traffic based on throughput, VoIP delay, and VoIP packet loss ratio metrics while PF improved the performance of best-effort traffic based on FTP traffic received, FTP packet loss ratio, and FTP throughput metrics
A Sharing- and Competition-Aware Framework for Cellular Network Evolution Planning
Mobile network operators are facing the difficult task of significantly
increasing capacity to meet projected demand while keeping CAPEX and OPEX down.
We argue that infrastructure sharing is a key consideration in operators'
planning of the evolution of their networks, and that such planning can be
viewed as a stage in the cognitive cycle. In this paper, we present a framework
to model this planning process while taking into account both the ability to
share resources and the constraints imposed by competition regulation (the
latter quantified using the Herfindahl index). Using real-world demand and
deployment data, we find that the ability to share infrastructure essentially
moves capacity from rural, sparsely populated areas (where some of the current
infrastructure can be decommissioned) to urban ones (where most of the
next-generation base stations would be deployed), with significant increases in
resource efficiency. Tight competition regulation somewhat limits the ability
to share but does not entirely jeopardize those gains, while having the
secondary effect of encouraging the wider deployment of next-generation
technologies
Коррекция ложных битов, повышение пропускной способности и влияние на качество обслуживания и кодовую схему модуляции ресурсного блока для LTE путем управления ресурсами
У статті пропонується новий крос-шаровий алгоритм планування, який забезпечує кращі параметри QoS у програмах застосування, що діють у реальному масштабі часу. Запропонований алгоритм будує послідовність ресурсних блоків із різними схемами модуляції та кодування (MCS) відповідно до частоти появи хибних бітів (BER). У статті відмічається, що у теперішній час приділяється значна увага розробці алгоритмів управління ресурсами радіозв’язку. Такі алгоритми покращують використання радіоресурсів і одночасно надають користувачам систему телекомунікацій із підвищеною перепускною здатністю. Управління радіоресурсами передбачає управління потужністю передачі, управління мобільністю, планування ресурсів радіозв’язку тощо. Інтелектуальне управління ресурсами радіозв’язку є основним завданням LTE, виконання якого дозволить зробити LTE надійною технологією, здатною задовольнити потреби користувачів широкосмугових мобільних телекомунікацій у наступні роки. Цей алгоритм дозволить планувати доступні ресурси найкращим чином і надасть користувачам достатньо можливостей передачі даних, навіть за умови вільного пересування користувачів. Крім того, визначені ресурси QoS не конфліктуватимуть із вже призначеними ресурсами.New cross-layer scheduling algorithm to satisfy better Quality of Service (QoS) parameters for real time applications has been proposed in this paper. The proposed algorithm builds on allocating resource blocks (RB) with different modulation and coding schemes (MCS) according to bit error rate (BER). The authors admit that nowadays great attention is paid to Radio resource management algorithms development. Such algorithms improve radio resources application, making the enhanced throughout telecommunication system available to users. Radio resources management includes transmission power management, mobility management, radio resources scheduling etc. Smart radio resource management is the major task of LTE, which enables LTE to become a reliable technology, meeting the broadband mobility requirements in upcoming years. The given algorithm will schedule the available resources to the best advantage and afford users enough data transmission opportunity, even while they freely move. Moreover, the assigned resources QoS would not interfere with already assigned resources.В данной статье предлагается новый кросс-слойный алгоритм планирования, обеспечивающий лучшие параметры QoS в приложениях, работающих в реальном масштабе времени. Предложенный алгоритм выстраивает выделенные ресурсные блоки (RBs) с различными схемами модуляции и кодирования (MCS) в соответствии с частотой появления ошибочных битов (BER). В статье отмечается, что в настоящее время уделяется большое внимание разработке алгоритмов управления ресурсами радиосвязи. Такие алгоритмы улучшают использование радиоресурсов, предоставляя пользователям систему телекоммуникаций с повышенной пропускной способностью. Управление радиоресурсами включает в себя управление мощностью передачи, управление мобильностью, планирование ресурсов радиосвязи и др. Интеллектуальное управление ресурсами радиосвязи является основной задачей LTE, которая призвана сделать LTE надежной технологией, удовлетворяющей потребности пользователей широкополосных мобильных телекоммуникаций в предстоящие годы. Этот алгоритм позволит планировать доступные ресурсы наилучшим образом и предоставит пользователям достаточно возможностей передачи данных, даже когда они свободно передвигаются. Кроме того, назначенные ресурсы QoS не будут интерферировать с уже назначенными ресурсами
Business Case and Technology Analysis for 5G Low Latency Applications
A large number of new consumer and industrial applications are likely to
change the classic operator's business models and provide a wide range of new
markets to enter. This article analyses the most relevant 5G use cases that
require ultra-low latency, from both technical and business perspectives. Low
latency services pose challenging requirements to the network, and to fulfill
them operators need to invest in costly changes in their network. In this
sense, it is not clear whether such investments are going to be amortized with
these new business models. In light of this, specific applications and
requirements are described and the potential market benefits for operators are
analysed. Conclusions show that operators have clear opportunities to add value
and position themselves strongly with the increasing number of services to be
provided by 5G.Comment: 18 pages, 5 figure
3G migration in Pakistan
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
Project Final Report – FREEDOM ICT-248891
This document is the final publishable summary report of the objective and work carried out within the European Project FREEDOM, ICT-248891.This document is the final publishable summary report of the objective and work carried out within the European Project FREEDOM, ICT-248891.Preprin
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