Mobile content offloading in database-assisted white space networks

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Tutkijat

Organisaatiot

  • University of Helsinki

Kuvaus

Mobile data offloading leverages more affordable or even free network capacity to reduce the traffic experienced by cellular operators through their limited over-the-air resources. One way to harvest free capacity is to employ the white space, namely, frequencies that are assigned to licensed users but are not actively utilized, as long as no harmful interference is generated. In this article, we characterize the benefits of harnessing node contacts for mobile content offloading through dynamic spectrum access assisted by a white space database (WSDB). We take a content-centric approach and model the selection of distributors among the subscribers of each content served through a base station. We formulate an optimization problem to maximize the offloading gain based on realistic settings. We show that such a problem is NP-hard and devise efficient heuristics for practical mobile data offloading. Our results show that the offloading gain allowed by white space is significant even when WSDB data are inaccurate.

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoCognitive Radio Oriented Wireless Networks - 11th International Conference, CROWNCOM 2016, Proceedings
TilaJulkaistu - 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Conference on Cognitive Radio Oriented Wireless Networks - Grenoble, Ranska
Kesto: 30 toukokuuta 20161 kesäkuuta 2016
Konferenssinumero: 11

Julkaisusarja

NimiLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Vuosikerta172
ISSN (painettu)18678211

Conference

ConferenceInternational Conference on Cognitive Radio Oriented Wireless Networks
LyhennettäCROWNCOM
MaaRanska
KaupunkiGrenoble
Ajanjakso30/05/201601/06/2016

ID: 6467255