Title:
RANDOM ACCESS IN COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/062721
Kind Code:
A1
Abstract:
Embodiments of the present disclosure relate to random access in a communication system. A first device detects that a criterion to select a first random access type for performing random access to a second device is met. The first device further determines whether the first device is allowed to use a contention-free random access resource allocated for a second random access type if the criterion to select the first random access type is met, and then performs the random access to the second device based on the determination. As such, in the case where contention-free random access resource has been allocated for a certain random access type, the device can conditionally apply the criterion for selection of the random access type and can thus perform random access with improved efficiency.
Inventors:
TURTINEN SAMULI (FI)
WU CHUNLI (CN)
WU CHUNLI (CN)
Application Number:
PCT/CN2019/109628
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
Assignee:
NOKIA SHANGHAI BELL CO LTD (CN)
NOKIA SOLUTIONS & NETWORKS OY (FI)
NOKIA TECHNOLOGIES OY (FI)
NOKIA SOLUTIONS & NETWORKS OY (FI)
NOKIA TECHNOLOGIES OY (FI)
International Classes:
H04W74/00
Domestic Patent References:
| WO2018135640A1 | 2018-07-26 |
Foreign References:
| US20180110074A1 | 2018-04-19 | |||
| CN109644326A | 2019-04-16 |
Other References:
TURUNEN, U. FARKKILA, M. VALTONEN, V.: "Long-term treatment of ulcerative colitis with ciprofloxacin", GASTROENTEROLOGY, ELSEVIER INC., US, vol. 117, no. 1, 1 July 1999 (1999-07-01), US, pages 282 - 283, XP005139755, ISSN: 0016-5085, DOI: 10.1016/S0016-5085(99)70593-7
SAMSUNG: "Corrections on PRACH procedure", 3GPP DRAFT; R1-1806705, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Busan, Korea; 20180521 - 20180525, 20 May 2018 (2018-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051441907
HUAWEI ET AL.: "RACH type switching between 2-steps, 4-steps RACH and CFRA", 3GPP DRAFT, R2-1907733
NOKIA ET AL.: "Feature lead summary #1 on 2 step RACH procedures", 3GPP DRAFT, R1-1909499
See also references of EP 3821666A4
SAMSUNG: "Corrections on PRACH procedure", 3GPP DRAFT; R1-1806705, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Busan, Korea; 20180521 - 20180525, 20 May 2018 (2018-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051441907
HUAWEI ET AL.: "RACH type switching between 2-steps, 4-steps RACH and CFRA", 3GPP DRAFT, R2-1907733
NOKIA ET AL.: "Feature lead summary #1 on 2 step RACH procedures", 3GPP DRAFT, R1-1909499
See also references of EP 3821666A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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