Search results for "rakenteettomat verkot"
showing 5 items of 5 documents
Performance Analysis of Cooperative V2V and V2I Communications Under Correlated Fading
2019
Cooperative vehicular networks will play a vital role in the coming years to implement various intelligent transportation-related applications. Both vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications will be needed to reliably disseminate information in a vehicular network. In this regard, a roadside unit (RSU) equipped with multiple antennas can improve the network capacity. While the traditional approaches assume antennas to experience independent fading, we consider a more practical uplink scenario where antennas at the RSU experience correlated fading. In particular, we evaluate the packet error probability for two renowned antenna correlation models, i.e., cons…
Mobiilien pilvipalvelujen uusi näkemys: tilapäinen mobiili pilvi
2014
Järvi, Juuso Mobiilien pilvipalvelujen uusi näkemys: tilapäinen mobiili pilvi Jyväskylä: Jyväskylän yliopisto, 2014, 35 s. Tietojärjestelmätiede, kandidaatin tutkielma Ohjaaja: Veijalainen, Jari Mobiililaitteiden määrä on viime vuosina kasvanut nopeasti ja niitä käytetään yhä enemmän kaikkeen tietojenkäsittelyyn. Vaikka mobiililaitteiden teknologia on kehittynyt, eivät ne edelleenkään sovellu hyvin vaativimpiin laskentatehtäviin, kuten kuvankäsittelyyn. Tässä tutkielmassa pohdittiin, kuinka mobiilaitteiden resursseja voitaisiin tarvittaessa laajentaa hyödyntämällä tilapäistä mobiilia pilveä, jossa toistensa läheisyydessä sijaitsevat mobiililaitteet toimisivat ulkoisina resursseina. Tutkielm…
Detecting cellular network anomalies using the knowledge discovery process
2015
Analytical companies unanimously forecast the exponential growth of mobile traffic consumption over the next five years. The densification of a network structure with small cells is regarded as a key solution to meet growing capacity demands. The manual management of a multi-layer network is a very expensive, error prone, and sluggish process. Hence, the automation of the whole life cycle of network operation is highly anticipated. To this aim 3GPP introduces a self-management concept referred to as SON. It is envisioned that SON updates information concerning the latest network conditions through the MDT mecha- nism. MDT enables a network operator to collect radio and service quality measurem…
Advanced performance monitoring for self-healing cellular mobile networks
2015
This dissertation is devoted to development and validation of advanced per- formance monitoring system for existing and future cellular mobile networks. Knowledge mining techniques are employed for analysis of user specific logs, collected with Minimization of Drive Tests (MDT) functionality. Ever increas- ing quality requirements, expansion of the mobile networks and their extend- ing heterogeneity, call for effective automatic means of performance monitoring. Nowadays, network operation is mostly controlled manually through aggregated key performance indicators and statistical profiles. These methods are are not able to fully address the dynamism and complexity of modern mobile networks. Se…