| Presentation | 2012-07-26 A Proposed Application of Cognitive Radio Technique towards the Usage of White Space in Public Cellular Systems and its Evaluation Results obtained form an Indoor Test-Bed Hiromasa FUJII, Shunji MIURA, Hidetoshi KAYAMA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A cognitive radio technique is attracting a lot of attentions as a promising countermeasure against the explosive increase of mobile traffics expected for the next decade. Still, almost all studies on the cognitive radio technique aim the use of White Space (WS) in TV bands, which seems to be feasible by using up-to-date techniques. In this study, we investigate a further possibility of the cognitive radio technique, which aims the use of WS in Public Cellular Networks (PCNs). We first clarify the difficulties specific for the PCN-WS usage and propose a novel sharing scheme with Cognitive-radio Supportive Accommodation Systems (CSASs) to overcome the difficulties. The main concept of the scheme is that CSAS, which is an primary system operating on a frequency band, accept to have a part of functionalities required for the spectrum sharing with CRSs. Additional processing burdens and implementation impacts to introduce the scheme are inevitable, and such burdens and impacts should be reduced as possible. Then the spectrum sharing scheme is designed to use signal formats of the PCN for inter-system control signals to reduce the burdens and the impacts. In this paper, the developed prototype devices equipped with the proposed sharing scheme are outlined, and we show some primitive evaluation results obtained by an indoor testbed with the prototype devices. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | cognitive radio system / public cellular network / transmit weight control / indoor test-beds |
| Paper # | SR2012-18 |
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| Committee | SR |
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| Conference Date | 2012/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposed Application of Cognitive Radio Technique towards the Usage of White Space in Public Cellular Systems and its Evaluation Results obtained form an Indoor Test-Bed |
| Sub Title (in English) | |
| Keyword(1) | cognitive radio system |
| Keyword(2) | public cellular network |
| Keyword(3) | transmit weight control |
| Keyword(4) | indoor test-beds |
| 1st Author's Name | Hiromasa FUJII |
| 1st Author's Affiliation | Research laboratories, NTT DOCOMO, INC.() |
| 2nd Author's Name | Shunji MIURA |
| 2nd Author's Affiliation | Research laboratories, NTT DOCOMO, INC. |
| 3rd Author's Name | Hidetoshi KAYAMA |
| 3rd Author's Affiliation | Research laboratories, NTT DOCOMO, INC. |
| Date | 2012-07-26 |
| Paper # | SR2012-18 |
| Volume (vol) | vol.112 |
| Number (no) | 153 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |