Spectrum utilization over licensed and unlicensed bands
Tekijät
Päivämäärä
2016Pääsyrajoitukset
Aineistoon pääsyä on rajoitettu tekijänoikeussyistä. Aineisto on luettavissa Jyväskylän yliopiston kirjaston arkistotyöasemalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat.
Nowadays, telecommunication technology becomes one of the universal phenomenon
used in people’s daily life. In recent years, the appearance of smartphones, tab lets, mobile
Internet Apps and services led to mobile data traffic proliferating, and the devices and ser-
vices will continue to increase dramatically for some time. The fact along with the tele-
communication devices increasing to aggravate the overload problem is that the users seek
for fast and reliable data transmission, as well as service continuity. To address the over-
load issue, LTE-Unlicensed (LTE-U) turns out to be one of the reasonable solutions to
provide high performance and seamless interoperability for users’ experience.
This thesis includes comprehensive literature review of LTE and LTE–U technolo-
gies from both operators' and users' perspective, and the analysis of their impact on the
field of licensed and unlicensed spectrum. LTE and Wi-Fi coexistence mechanisms are
introduced with the basic characteristics, such as time, power and frequency. Moreover,
three key challenges of LTE-U are also discussed, particularly the most important issue of
multiple technologies shared by the unlicensed spectrum bands. At the end of this thesis,
an optimized method is analyzed and proposed to design the optimal scheme.
...
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Asiasanat
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