Title:
BASE STATION APPARATUS AND DATA MAPPING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/001475
Kind Code:
A1
Abstract:
When a plurality of user terminal devices have different receiving qualities, data transmission efficiency to each user terminal device can be improved. A pair determination unit (101) determines pairs by combining every two of the user terminal devices having a large SNR difference. A selection unit (104) assigns to each of the pair of user terminal devices a hierarchical modulation channel corresponding to each SNR. In this case, the selection unit (104) assigns the hierarchical modulation channel having a high hierarchy to the user terminal device having a low SNR and the hierarchical modulation channel having a low hierarchy to the user terminal device having a high SNR. A hierarchical modulation unit (107) maps the user data of each user terminal device onto the hierarchical modulation channel corresponding to the each user terminal device.
Inventors:
WU JIANMING (JP)
TANIGUCHI TOMOHIKO (JP)
TANIGUCHI TOMOHIKO (JP)
Application Number:
PCT/JP2008/062103
Publication Date:
January 07, 2010
Filing Date:
July 03, 2008
Export Citation:
Assignee:
FUJITSU LTD (JP)
WU JIANMING (JP)
TANIGUCHI TOMOHIKO (JP)
WU JIANMING (JP)
TANIGUCHI TOMOHIKO (JP)
International Classes:
H04Q7/38; H04Q7/32
Foreign References:
| JP2005252834A | 2005-09-15 | |||
| JP2001515307A | 2001-09-18 | |||
| JP2005039807A | 2005-02-10 |
Other References:
MD. JAHANGIR HOSSAIN ET AL.: "Multi-User Opportunistic Scheduling using Power Controlled Hierarchical Constellations", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, vol. 6, no. 5, May 2007 (2007-05-01), pages 1581 - 1586, XP011181419
MD. JAHANGIR HOSSAIN ET AL.: "Rate Adaptive Hierarchical Modulation-Assisted Two-User Opportunistic Scheduling", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, vol. 6, no. 6, June 2007 (2007-06-01), pages 2076 - 2085, XP011185948
MASAKAZU MORIMOTO ET AL.: "Digital Hoso ni Okeru Kaiso Hencho Hoshiki no Denryoku Haibun ni Kansuru Ichikento", ITEJ TECHNICAL REPORT, vol. 18, no. 21, 1994, pages 31 - 35, XP008138632
"3GPP TSG RAN WG1 Meeting #42bis R1-051122", 14 October 2005, EUROPE, article QUALCOMM: "Description, Simulations and TP on Hierarchical Modulation Technique for E-UTRA MBMS Evaluation", XP050100737
MD. JAHANGIR HOSSAIN ET AL.: "Rate Adaptive Hierarchical Modulation-Assisted Two-User Opportunistic Scheduling", IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, vol. 6, no. 6, June 2007 (2007-06-01), pages 2076 - 2085, XP011185948
MASAKAZU MORIMOTO ET AL.: "Digital Hoso ni Okeru Kaiso Hencho Hoshiki no Denryoku Haibun ni Kansuru Ichikento", ITEJ TECHNICAL REPORT, vol. 18, no. 21, 1994, pages 31 - 35, XP008138632
"3GPP TSG RAN WG1 Meeting #42bis R1-051122", 14 October 2005, EUROPE, article QUALCOMM: "Description, Simulations and TP on Hierarchical Modulation Technique for E-UTRA MBMS Evaluation", XP050100737
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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