| Presentation | 2016-05-16 [Poster Presentation] An Experimental Study on Network-Listening Based Synchronization with Loop-Back Self-Interference Canceller Sho Nabatame, Mitsukuni Konishi, Atsushi Nagate, Teruya Fujii, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The overlaid cell structure, in which a large number of small cells are deployed in a macro-cell coverage area, is considered to be a promising approach in order to accommodate rapidly increasing mobile data traffic. In the overlaid cell structure, eICIC (enhanced Inter-Cell Interference Coordination) is an essential technique to avoid the interference between the macro cells and the small cells when co-channel deployment is used. Because eICIC conducts interference coordination in the time domain, accurate timing synchronization is required between the macro cells and the small cells. We have proposed a network-listening based synchronization method, which enables accurate synchronization even indoors without receiving GPS signal. In the proposed method, a small-cell eNB receives a macro-cell downlink synchronization signal and establishes synchronization with the macro-cell eNB. However, we need to update synchronization periodically and receive a macro-cell signal even while there is a loop-back interference signal from the small-cell eNB itself. In order to solve the problem, we have proposed a method to mute the transmission and avoid loop-back self-interference. Although this works well, it is an issue that the spectral efficiency is deteriorated by the signal stopping. In this paper, we propose a synchronization method that cancels loop-back self-interference without stopping the transmission of small-cell eNB and clarify the effect of the proposed method by computer simulations and laboratory experiments using the first-ever prototype system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-AdvancedLayered cell configurationHetNetSmall cellTimings synchronizationNetwork listeningRadio-interface based synchronization |
| Paper # | SR2016-4,SRW2016-4 |
| Date of Issue | 2016-05-09 (SR, SRW) |
| Conference Information | |
| Committee | SR / SRW |
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| Conference Date | 2016/5/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hotel Lasaretti, Oulu, Finland |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | SmartCom2016 |
| Chair | Takeo Fujii(Univ. of Electro-Comm.) / Hiroshi Harada(Kyoto Univ.) |
| Vice Chair | Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) / Masayuki Ariyoshi(NEC) / Masafumi Kato(Fujitsu) / Satoshi Denno(Okayama Univ.) |
| Secretary | Kenta Umebayashi(Shinshu Univ.) / Masayuki Ariyoshi(NICT) / Masafumi Kato(NTT) / Satoshi Denno(NICT) |
| Assistant | Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) / Gia Khanh Tran(Tokyo Inst. of Tech.) / Wen Yun(Fujitsu) / Keiichi Mizutani(Kyoto Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] An Experimental Study on Network-Listening Based Synchronization with Loop-Back Self-Interference Canceller |
| Sub Title (in English) | |
| Keyword(1) | LTE-AdvancedLayered cell configurationHetNetSmall cellTimings synchronizationNetwork listeningRadio-interface based synchronization |
| 1st Author's Name | Sho Nabatame |
| 1st Author's Affiliation | SoftBank Corp(SoftBank) |
| 2nd Author's Name | Mitsukuni Konishi |
| 2nd Author's Affiliation | SoftBank Corp(SoftBank) |
| 3rd Author's Name | Atsushi Nagate |
| 3rd Author's Affiliation | SoftBank Corp(SoftBank) |
| 4th Author's Name | Teruya Fujii |
| 4th Author's Affiliation | SoftBank Corp(SoftBank) |
| Date | 2016-05-16 |
| Paper # | SR2016-4,SRW2016-4 |
| Volume (vol) | vol.116 |
| Number (no) | SR-29,SRW-30 |
| Page | pp.pp.9-14(SR), pp.9-14(SRW), |
| #Pages | 6 |
| Date of Issue | 2016-05-09 (SR, SRW) |