Title:
USER TERMINAL, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/069085
Kind Code:
A1
Abstract:
The objective of this invention is to apply power compensation in a signal overlapping section in which uplink transmission power exceeds an upper limit, while minimizing deterioration in uplink transmission quality. A user terminal which can communicate with a plurality of wireless base stations via a plurality of component carriers on a wireless communication system in which it is possible to constitute a system band with a plurality of component carriers, said user terminal being provided with:
a transmission unit (106) in which a plurality of component carriers are classified into a plurality of timing groups, and which transmits an uplink physical channel with transmission timing that is controlled for each timing group; and a power control unit (1084) that performs power compensation by assigning priority to physical channels of full-overlap sections in which physical channels having the same subframe number overlap across component carriers, if the uplink transmission timing is controlled in timing group units.
Inventors:
KAKISHIMA YUICHI (JP)
TAKEDA KAZUAKI (JP)
KISHIYAMA YOSHIHISA (JP)
TAKEDA KAZUAKI (JP)
KISHIYAMA YOSHIHISA (JP)
Application Number:
PCT/JP2013/073161
Publication Date:
May 08, 2014
Filing Date:
August 29, 2013
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W52/40; H04W52/30; H04W72/04
Other References:
QUALCOMM INCORPORATED: "Power control aspects of multiple TA operation", 3GPP TSG-RAN WG1#69 R1- 122772, 25 March 2012 (2012-03-25), XP050600950
ALCATEL-LUCENT ET AL.: "Simultaneous transmissions of multiple UL channels with multiple TA groups", 3GPP TSG-RAN WG1#69 RL-122473, 25 March 2012 (2012-03-25), XP050601047
PANASONIC: "UE behavior for power limitation in multiple TA", 3GPP TSG-RAN WG1#69 RL-122177, 25 March 2012 (2012-03-25), XP050600442
LG ELECTRONICS: "Power limitation in multiple TA", 3GPP TSG-RAN WG1#69 RL-122278, 25 March 2012 (2012-03-25), XP050600541
3RD GENERATION PARTNERSHIP PROJECT: "Feasibility study for Evolved URA and UTRAN", GPP, TR25.912 (V7.1.0), September 2006 (2006-09-01)
3RD GENERATION PARTNERSHIP PROJECT: "Timing Advance", 3GPP, TS 36.211 SEC. 8.1
See also references of EP 2916598A4
ALCATEL-LUCENT ET AL.: "Simultaneous transmissions of multiple UL channels with multiple TA groups", 3GPP TSG-RAN WG1#69 RL-122473, 25 March 2012 (2012-03-25), XP050601047
PANASONIC: "UE behavior for power limitation in multiple TA", 3GPP TSG-RAN WG1#69 RL-122177, 25 March 2012 (2012-03-25), XP050600442
LG ELECTRONICS: "Power limitation in multiple TA", 3GPP TSG-RAN WG1#69 RL-122278, 25 March 2012 (2012-03-25), XP050600541
3RD GENERATION PARTNERSHIP PROJECT: "Feasibility study for Evolved URA and UTRAN", GPP, TR25.912 (V7.1.0), September 2006 (2006-09-01)
3RD GENERATION PARTNERSHIP PROJECT: "Timing Advance", 3GPP, TS 36.211 SEC. 8.1
See also references of EP 2916598A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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