| Presentation | 2015-03-05 A Study on Licensed-Assisted Access using LTE on Unlicensed Band Naoki KUSASHIMA, DELGADO Alvaro RUIZ, Kazuyuki SHIMEZAWA, Kazunari YOKOMAKURA, Kimihiko IMAMURA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to cope with explosively increasing traffic, license-assisted access (LAA) is being studied in the third generation partnership project (3GPP) release 13. In LAA operation, an important scope is that long term evolution (LTE) is operated in unlicensed bands such as 5 GHz with assistance from LTE in license bands. However, in unlicensed band, other wireless system such as wireless local area network (WLAN) has already been deployed. Therefore, one of the most important issues is that LAA system can co-exist with WLAN system so that LAA does not degrades WLAN performances in LAA-WLAN coexistence case in comparison to WLAN-WLAN coexistence case. In the WLAN which can be operated in unlicensed band, a carrier sense multiple access with collision avoidance (CSMA/CA) is employed as a listen-before talk (LET) to fairly co-exist with other WLAN nodes and satisfy regulations for companies. In that sense, LAA evolved node B (eNB) or user equipment (UE) should apply a LBE. Therefore, in this paper, we study two kind of LET accommodated to a design of LTE physical layer using system level simulation assuming only donwlink (DL) transmission is operated in the unlicensed band. Computer simulation confirms no impact of LAA on WLAN and significant improvement of LAA performance compared with WLAN performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / Release 13 / licensed-assisted access / Listen Before Talk / Wireless LAN |
| Paper # | RCS2014-343 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2015/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Licensed-Assisted Access using LTE on Unlicensed Band |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | Release 13 |
| Keyword(3) | licensed-assisted access |
| Keyword(4) | Listen Before Talk |
| Keyword(5) | Wireless LAN |
| 1st Author's Name | Naoki KUSASHIMA |
| 1st Author's Affiliation | Telecommunication & Image Technology Laboratories, Corporate Research and Development Division, Sharp Corporation() |
| 2nd Author's Name | DELGADO Alvaro RUIZ |
| 2nd Author's Affiliation | Telecommunication & Image Technology Laboratories, Corporate Research and Development Division, Sharp Corporation |
| 3rd Author's Name | Kazuyuki SHIMEZAWA |
| 3rd Author's Affiliation | Telecommunication & Image Technology Laboratories, Corporate Research and Development Division, Sharp Corporation |
| 4th Author's Name | Kazunari YOKOMAKURA |
| 4th Author's Affiliation | Telecommunication & Image Technology Laboratories, Corporate Research and Development Division, Sharp Corporation |
| 5th Author's Name | Kimihiko IMAMURA |
| 5th Author's Affiliation | Telecommunication & Image Technology Laboratories, Corporate Research and Development Division, Sharp Corporation |
| Date | 2015-03-05 |
| Paper # | RCS2014-343 |
| Volume (vol) | vol.114 |
| Number (no) | 490 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |