Title:
TERMINAL DEVICE AND COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/183312
Kind Code:
A1
Abstract:
This terminal device, which can efficiently perform a random access procedure, uses multiple serving cells including a primary cell and one or multiple secondary cells to communicate with a base station device, and is provided with a medium access control layer processing unit which, on the basis of a PDCCH order, initiates the random access procedure in any of the multiple serving cells, a transmission unit (10) which transmits a random access preamble in any of the serving cells, and a receiving unit (10) which receives a random access response, wherein, in the case that reception of the random access response is considered to have ended in failure, the medium access control layer processing unit (15) determines whether or not to automatically reinitiate transmission of the random access preamble at least on the basis of whether the random access preamble was transmitted by the primary cell or a secondary cell.
Inventors:
SUZUKI SHOICHI
AIBA TATSUSHI
OHUCHI WATARU
YOSHIMURA TOMOKI
LIU LIQING
AIBA TATSUSHI
OHUCHI WATARU
YOSHIMURA TOMOKI
LIU LIQING
Application Number:
PCT/JP2017/007851
Publication Date:
October 26, 2017
Filing Date:
February 28, 2017
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04W52/50; H04J11/00; H04J99/00; H04W72/04; H04W74/08
Domestic Patent References:
| WO2013168776A1 | 2013-11-14 |
Foreign References:
| US20120218903A1 | 2012-08-30 |
Other References:
"Considerations on RACH failure handling on SCell", 3GPP TSG RAN WG2 MEETING #77 BIS R2-121189, 26 March 2012 (2012-03-26), XP050606194
"Consideration on RA response window for sTAG", 3GPP TSG-RAN WG2 #79 R2-123945, 13 August 2012 (2012-08-13), XP050665407
3GPP TS 36.211, 29 March 2016 (2016-03-29)
3GPP TS 36.212, 29 March 2016 (2016-03-29)
3GPP TS 36.213, 31 March 2016 (2016-03-31)
3GPP TS 36.300, 13 January 2015 (2015-01-13)
3GPP TS 36.321, 14 January 2016 (2016-01-14)
ERICSSON; HUAWEI: "New Work Item on enhanced LAA for LTE", 3GPP TSG RAN MEETING#70, 10 December 2015 (2015-12-10)
See also references of EP 3448095A4
"Consideration on RA response window for sTAG", 3GPP TSG-RAN WG2 #79 R2-123945, 13 August 2012 (2012-08-13), XP050665407
3GPP TS 36.211, 29 March 2016 (2016-03-29)
3GPP TS 36.212, 29 March 2016 (2016-03-29)
3GPP TS 36.213, 31 March 2016 (2016-03-31)
3GPP TS 36.300, 13 January 2015 (2015-01-13)
3GPP TS 36.321, 14 January 2016 (2016-01-14)
ERICSSON; HUAWEI: "New Work Item on enhanced LAA for LTE", 3GPP TSG RAN MEETING#70, 10 December 2015 (2015-12-10)
See also references of EP 3448095A4
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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