Title:
USER TERMINAL, RADIO BASE STATION, AND RADIO COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/017705
Kind Code:
A1
Abstract:
The present invention suppresses degradation of uplink communication quality when a user terminal connects to multiple radio base stations by application of dual connectivity (DC). The user terminal communicates with a first radio base station and a second radio base station by application of dual connectivity, said first radio base station establishing a first cell group, and said second radio base station establishing a second cell group. The user terminal has: a transmission unit for transmitting a UL signal including an SRS and/or a UL channel to the respective cell groups; and a control unit for controlling the transmit power of the UL signal and/or the UL channel for the respective cell groups. The control unit controls the transmit power of the UL signal and/or the UL channel for the respective cell groups on the basis of guaranteed power set for at least one of the cell groups.
Inventors:
KAKISHIMA YUICHI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
Application Number:
PCT/JP2015/071527
Publication Date:
February 04, 2016
Filing Date:
July 29, 2015
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W52/34; H04W52/32; H04W72/04
Other References:
NTT DOCOMO: "Power -control mechanisms for dual connectivity", 3GPP TSG-RAN WG1#77 R1- 142264, 10 May 2014 (2014-05-10), pages 1 - 8, XP050814726, Retrieved from the Internet
NTT DOCOMO: "Outcome of the email discussion [76b-08] on TPC aspects of Dual Connectivity", 3GPP TSG-RAN WG1#76B R1-141899, 6 May 2014 (2014-05-06), pages 11, XP050814250, Retrieved from the Internet
INTERDIGITAL: "Power sharing in dual connectivity", 3GPP TSG-RAN WG1#77 R1- 142347, 10 May 2014 (2014-05-10), pages 1 - 4, XP050814797, Retrieved from the Internet
See also references of EP 3209069A4
NTT DOCOMO: "Outcome of the email discussion [76b-08] on TPC aspects of Dual Connectivity", 3GPP TSG-RAN WG1#76B R1-141899, 6 May 2014 (2014-05-06), pages 11, XP050814250, Retrieved from the Internet
INTERDIGITAL: "Power sharing in dual connectivity", 3GPP TSG-RAN WG1#77 R1- 142347, 10 May 2014 (2014-05-10), pages 1 - 4, XP050814797, Retrieved from the Internet
See also references of EP 3209069A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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