Title:
WIRELESS RELAY STATION, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2012/077790
Kind Code:
A1
Abstract:
A wireless relay station, a wireless base station and a wireless communication method with which capacity can be increased by improving user throughput in a type II relay are provided. This wireless communication method is characterized in that: in the wireless relay station, relay link channel quality is measured by using a sounding reference signal from a mobile terminal, and feedback information containing the measurement result for the relay link channel quality is transmitted to the wireless base station via a backhaul link; and in the wireless base station, direct link channel quality is measured by using a sounding reference signal from a mobile terminal, a correction value is subtracted from the measurement result from the wireless relay station, and wireless resources are allocated to either of the mobile terminals based on the subtraction result and the measurement result for the direct link channel quality.
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Inventors:
NAGATA SATOSHI (JP)
TAOKA HIDEKAZU (JP)
KUSUME KATSUTOSHI (JP)
WEITKEMPER PETRA (JP)
TAOKA HIDEKAZU (JP)
KUSUME KATSUTOSHI (JP)
WEITKEMPER PETRA (JP)
Application Number:
PCT/JP2011/078578
Publication Date:
June 14, 2012
Filing Date:
December 09, 2011
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
NAGATA SATOSHI (JP)
TAOKA HIDEKAZU (JP)
KUSUME KATSUTOSHI (JP)
WEITKEMPER PETRA (JP)
NAGATA SATOSHI (JP)
TAOKA HIDEKAZU (JP)
KUSUME KATSUTOSHI (JP)
WEITKEMPER PETRA (JP)
International Classes:
H04W16/26; H04B1/3822; H04B1/40; H04B7/15; H04B17/309; H04B17/382; H04W24/10; H04W72/04
Domestic Patent References:
| WO2010150417A1 | 2010-12-29 |
Other References:
HITACHI, LTD.: "Modification ot Type II relay for measuring RN-UE channel", 3GPP TSG RAN WG1 #58 RL-093588, 28 August 2009 (2009-08-28), pages 2, XP050388161
ALCATEL-LUCENT ET AL.: "System Design Frameworks to Support Type II Relay Operation in LTE-A", 3GPP TSG RAN WG1 #57 RL-092157, 8 May 2009 (2009-05-08), pages 8, XP050339597
HITACHI, LTD.: "Capacity-based relay UE selection for Type II Relay", 3GPP TSG RAN WG1 #58BIS R1-094035, 16 October 2009 (2009-10-16), XP050388522
3RD GENERATION PARTNERSHIP PROJECT: "Technical Specification Group Radio Access Network , Evolved Universal Terrestrial Radio Access (E-UTRA);Physical layer for relaying operation(Release 10)", 3GPP, TS36.216 (V10.0.0), September 2010 (2010-09-01)
3RD GENERATION PARTNERSHIP PROJECT: "Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Relay architectures for E-UTRA (LTE-Advanced)(Release 9)", 3GPP, TS36.806 (V9.0.0), March 2010 (2010-03-01)
See also references of EP 2651157A4
ALCATEL-LUCENT ET AL.: "System Design Frameworks to Support Type II Relay Operation in LTE-A", 3GPP TSG RAN WG1 #57 RL-092157, 8 May 2009 (2009-05-08), pages 8, XP050339597
HITACHI, LTD.: "Capacity-based relay UE selection for Type II Relay", 3GPP TSG RAN WG1 #58BIS R1-094035, 16 October 2009 (2009-10-16), XP050388522
3RD GENERATION PARTNERSHIP PROJECT: "Technical Specification Group Radio Access Network , Evolved Universal Terrestrial Radio Access (E-UTRA);Physical layer for relaying operation(Release 10)", 3GPP, TS36.216 (V10.0.0), September 2010 (2010-09-01)
3RD GENERATION PARTNERSHIP PROJECT: "Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA);Relay architectures for E-UTRA (LTE-Advanced)(Release 9)", 3GPP, TS36.806 (V9.0.0), March 2010 (2010-03-01)
See also references of EP 2651157A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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Claims: