Title:
METHOD AND APPARATUS FOR SUPPORTING MULTIPLE MESSAGE A SIZES AND UPLINK COVERAGE FOR TWO STEP RANDOM ACCESS PROCEDURE
Document Type and Number:
WIPO Patent Application WO/2020/060371
Kind Code:
A1
Abstract:
A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method by a terminal configured with at least one serving cell for performing a random access (RA) procedure is provided. The method includes measuring downlink reference signal received power (DL RSRP) of a serving cell on which the RA procedure is initiated, determining whether the DL RSRP of the serving cell is greater than a threshold, and performing a two-step RA procedure based on the DL RSRP of the serving cell being greater than the threshold.
Inventors:
AGIWAL ANIL (KR)
JANG JAEHYUK (KR)
JANG JAEHYUK (KR)
Application Number:
PCT/KR2019/012360
Publication Date:
March 26, 2020
Filing Date:
September 23, 2019
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04W74/08; H04B17/318; H04W74/00
Foreign References:
| US20180110074A1 | 2018-04-19 | |||
| KR20180081372A | 2018-07-16 | |||
| US20180103465A1 | 2018-04-12 |
Other References:
LG ELECTRONICS: "Enhanced 4-step RACH procedure for NR-U", R2-1812835, 3GPP TSG-RAN WG2 #103, vol. RAN WG2, 10 August 2018 (2018-08-10), Gothenburg, Sweden, XP051522423
OPPO: "Two-steps RACH procedure for NR-U", R2-1811067, 3GPP TSG-RAN WG2 MEETING #103, vol. RAN WG2, 10 August 2018 (2018-08-10), Gothenberg, Sweden, XP051520768
INTEL CORPORATION: "Considerations of 2-step CBRA for NR licensed and unlicensed operation", R2-1811664, 3GPP TSG-RAN WG2 MEETING #103, vol. RAN WG2, 10 August 2018 (2018-08-10), Gothenberg, Sweden, XP051521307
See also references of EP 3841824A4
OPPO: "Two-steps RACH procedure for NR-U", R2-1811067, 3GPP TSG-RAN WG2 MEETING #103, vol. RAN WG2, 10 August 2018 (2018-08-10), Gothenberg, Sweden, XP051520768
INTEL CORPORATION: "Considerations of 2-step CBRA for NR licensed and unlicensed operation", R2-1811664, 3GPP TSG-RAN WG2 MEETING #103, vol. RAN WG2, 10 August 2018 (2018-08-10), Gothenberg, Sweden, XP051521307
See also references of EP 3841824A4
Attorney, Agent or Firm:
YOON & LEE INTERNATIONAL PATENT & LAW FIRM (KR)
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