Title:
METHOD AND APPARATUS FOR SHARING DEMODULATION REFERENCE SIGNAL FOR SHORT TTI IN WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/138794
Kind Code:
A3
Abstract:
Multiple short transmission time intervals (TTIs), each of which is shorter than 1ms, may be configured in a subframe. A user equipment (UE) may transmit a demodulation reference signal (DM-RS) which is shared among different UEs to an eNodeB (eNB). In this case, the DM-RS may be transmitted in a reference TTI, which is one short TTI among the multiple short TTIs, and the reference TTI may be indicated by downlink control information (DCI) received from the eNB. Alternatively, a UE may transmit the DM-RS which is shared among different short TTIs to the eNB.
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Inventors:
YI YUNJUNG (KR)
KIM EUNSUN (KR)
YOU HYANGSUN (KR)
KIM EUNSUN (KR)
YOU HYANGSUN (KR)
Application Number:
PCT/KR2017/001546
Publication Date:
July 19, 2018
Filing Date:
February 13, 2017
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L5/00
Domestic Patent References:
| WO2015076712A1 | 2015-05-28 |
Other References:
LENOVO: "Consideration on TTI shortening for DL", R1-161017, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064497, Retrieved from the Internet
LG ELECTRONICS: "Discussion on PUSCH transmission with TTI shortening", R1-160655, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064292, Retrieved from the Internet
LG ELECTRONICS: "Discussion on DMRS based PDCCH transmission with TTI shortening", R1-160651, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064288, Retrieved from the Internet
INTEL CORPORATION: "Aspects to consider for DL transmission of TTI shortening", R1-160436, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064194, Retrieved from the Internet
LG ELECTRONICS: "Discussion on PUSCH transmission with TTI shortening", R1-160655, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064292, Retrieved from the Internet
LG ELECTRONICS: "Discussion on DMRS based PDCCH transmission with TTI shortening", R1-160651, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064288, Retrieved from the Internet
INTEL CORPORATION: "Aspects to consider for DL transmission of TTI shortening", R1-160436, 3GPP TSG RAN WG1 MEETING #84, 6 February 2016 (2016-02-06), St. Julian's, Malta, XP051064194, Retrieved from the Internet
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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