On a market of free competition, when consumers select their telecommunication service provider, they will not only consider basic elements such as the installation fee, call rate, and telecommunication reliability but also whether the provider can furnish the desired customer service, which is especially important. For most consumers, an essential part of customer service is the payment service. Due to the fact that there is not much difference in the technology, communication facilities and the type of business provided by different companies in the telecommunication industry, billing system and related customer services accordingly become the key differential factor and play a indispensable role in the decision-making process of customers. Moreover, as far as the operation, management, and strategy are concerned, billing system is the key backup for telecommunication enterprises. Establishing a billing system meeting the requirement of an enterprise that can provide the desired customer services hence becomes a priority for large telecommunication companies wishing to gain the upper hand in competition. This research uses the software architecture concept to develop a set of description language for the WiMAX billing management system based on which the architecture-oriented WiMAX billing management system model, abbreviated as AOWBMSM, is formulated. AOWBMSM is an integral model of the WiMAX billing management system framework which adopts the structure behavior coalescence, abbreviated as SBC, approach. It can clearly and completely describe the WiMAX billing management system and hopefully can serve as a model with more reference value when enterprises are planning, analyzing, and designing their payment system.

Orientador: Prof. Dr. Thales Sousa / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia Elétrica, 2017. / As perdas não técnicas ou perdas comerciais são um grande problema enfrentado pelas distribuidoras de energia elétrica e pelo órgão regulador. Nesse sentido, o presente trabalho tem por objetivo propor ações de redução das perdas não técnicas, bem como das perdas financeiras das distribuidoras de energia elétrica em decorrência da inadimplência. Para tanto, serão apresentadas medidas de campo que permitam mudanças no comportamento dos consumidores, em especial aqueles em situação de risco social no que tange ao pagamento e à inadimplência. Serão também propostos métodos de cobrança e faturamento que permitam a redução das perdas não técnicas e da inadimplência. As contribuições do presente trabalho permitirão uma melhor gestão de cobrança e um novo sistema de corte horo-sazonal. / Non-technical losses or commercial losses are a major challenge faced by the electricity distribution companies and the regulatory agencies. This paper aims proposing actions to reduce non-technical losses and financial losses of electricity distribution as a result of default. Therefore, field measurements will be presented, which allow changes in consumer behavior, particularly those in social risk, with regard to payment and default. There will be proposed collection methods and billing that enable the reduction of non-technical losses and defaults. Contributions of this work will allow a better billing management and a new cut-off method based on daytime.