Title:
WIRELESS COMMUNICATIONS METHOD, WIRELESS BASE STATION, USER TERMINAL, AND WIRELESS COMMUNICATIONS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/017441
Kind Code:
A1
Abstract:
A wireless communications method, a wireless base station, a user terminal, and a wireless communications system that enable appropriate uplink wireless resource allocation to delivery confirmation information for a downlink shared data channel, when transmitting downlink control information using an expanded downlink control channel. This wireless communications system has: a step in which the wireless base station sets, to the user terminal, a plurality of expanded PDCCH sets including and each configured by a plurality of expanded control channel elements (eCCE) allocated to the expanded downlink control channel; a step in which the wireless base station sends downlink control information having resource identifiers (ARI) that differ between the plurality of expanded PDCCH sets added thereto, to the user terminal; and a step in which the user terminal determines the uplink control channel wireless resource used for the transmission of the delivery confirmation information for the downlink shared data channel, on the basis of an offset value associated to the resource identifiers (ARI).
Inventors:
TAKEDA KAZUAKI (JP)
NAGATA SATOSHI (JP)
KISHIYAMA YOSHIHISA (JP)
MU QIN (CN)
LIU LIU (CN)
CHEN LAN (CN)
NAGATA SATOSHI (JP)
KISHIYAMA YOSHIHISA (JP)
MU QIN (CN)
LIU LIU (CN)
CHEN LAN (CN)
Application Number:
PCT/JP2013/069804
Publication Date:
January 30, 2014
Filing Date:
July 22, 2013
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W72/04; H04W72/12
Domestic Patent References:
| WO2011136523A2 | 2011-11-03 |
Other References:
SAMSUNG: "HARQ-ACK PUCCH Resources in Response to ePDCCH Detections", 3GPP TSG RAN WG1 #69 R1-122259, 21 May 2012 (2012-05-21), XP050600522, Retrieved from the Internet
SAMSUNG: "ACK/NACK PUCCH resource compression in TDD", 3GPP TSG RAN WG1 MEETING #54 R1-082862, 18 August 2008 (2008-08-18), XP050316346, Retrieved from the Internet
SAMSUNG: "PUCCH Resource Allocation for UL CoMP", 3GPP TSG RAN WG1 MEETING #69 R1-122247, 21 May 2012 (2012-05-21), XP050600511, Retrieved from the Internet
3RD GENERATION PARTNERSHIP PROJECT: "Requirements for Evolved UTRA and Evolved UTRAN", 3GPP TR 25.913
See also references of EP 2876960A4
SAMSUNG: "ACK/NACK PUCCH resource compression in TDD", 3GPP TSG RAN WG1 MEETING #54 R1-082862, 18 August 2008 (2008-08-18), XP050316346, Retrieved from the Internet
SAMSUNG: "PUCCH Resource Allocation for UL CoMP", 3GPP TSG RAN WG1 MEETING #69 R1-122247, 21 May 2012 (2012-05-21), XP050600511, Retrieved from the Internet
3RD GENERATION PARTNERSHIP PROJECT: "Requirements for Evolved UTRA and Evolved UTRAN", 3GPP TR 25.913
See also references of EP 2876960A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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