Title:
USER TERMINAL, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/021697
Kind Code:
A1
Abstract:
The present invention appropriately controls antenna selection in a user terminal even when the user terminal connects to a plurality of wireless base stations by adapting dual connectivity (DC). A user terminal that supports dual connectivity-based communication with a plurality of wireless base stations each of which sets a cell group configured from one or more cells. The user terminal has a transmission unit for transmitting a UL signal to one or more cell groups, and a control unit for controlling selection of the antenna used for transmission of the UL signal, the control unit determining that no multiple cell groups are set when antenna selection for a serving cell (UE transmit antenna section) is set and controlling selection of the antenna.
Inventors:
KAKISHIMA YUICHI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
UCHINO TOORU (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
UCHINO TOORU (JP)
Application Number:
PCT/JP2015/072409
Publication Date:
February 11, 2016
Filing Date:
August 06, 2015
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W88/02; H04W16/32; H04W72/04
Domestic Patent References:
| WO2010146938A1 | 2010-12-23 |
Foreign References:
| JP2011171972A | 2011-09-01 | |||
| JP2014511605A | 2014-05-15 |
Other References:
INTEL CORPORATION: "On network assisted reception of dual-connectivity", 3GPP TSG-RAN WG1#75 R1-135126, 15 November 2013 (2013-11-15), XP050750760, Retrieved from the Internet
3GPP TS 36.213 V12.2.0, June 2014 (2014-06-01), pages 133
NTT DOCOMO, INC.: "Clarifications on Rel.12 Dual connectivity", 3GPP TSG-RAN WG1#80 R1- 150508, 13 February 2015 (2015-02-13), XP050948678, Retrieved from the Internet
SAMSUNG: "Remaining Aspects on Dual Connectivity", 3GPP TSG-RAN WG1#80 R1-150343, 13 February 2015 (2015-02-13), XP050948743, Retrieved from the Internet
See also references of EP 3179821A4
3GPP TS 36.213 V12.2.0, June 2014 (2014-06-01), pages 133
NTT DOCOMO, INC.: "Clarifications on Rel.12 Dual connectivity", 3GPP TSG-RAN WG1#80 R1- 150508, 13 February 2015 (2015-02-13), XP050948678, Retrieved from the Internet
SAMSUNG: "Remaining Aspects on Dual Connectivity", 3GPP TSG-RAN WG1#80 R1-150343, 13 February 2015 (2015-02-13), XP050948743, Retrieved from the Internet
See also references of EP 3179821A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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