Title:
TWO-STEP RANDOM ACCESS METHOD AND DEVICE FOR UNLICENSED FREQUENCY BAND
Document Type and Number:
WIPO Patent Application WO/2021/023225
Kind Code:
A1
Abstract:
Disclosed are a two-step random access method and device for an unlicensed frequency band. The method is implemented by a terminal device, and comprises: determining, according to an LBT detection result, whether to send an msgA and whether to update a power adjustment counter for the msgA, wherein the power adjustment counter is used for determining the sending power for the msgA, and the msgA comprises a PRACH and a PUSCH; and determining, according to a sending situation of the msgA, whether to update a transmission counter for the msgA.
Inventors:
SHEN XIAODONG (CN)
MO YITAO (CN)
MO YITAO (CN)
Application Number:
PCT/CN2020/107126
Publication Date:
February 11, 2021
Filing Date:
August 05, 2020
Export Citation:
Assignee:
VIVO MOBILE COMMUNICATION CO LTD (CN)
International Classes:
H04W56/00; H04W74/08
Foreign References:
| CN109756991A | 2019-05-14 |
Other References:
QUALCOMM INCORPORATED: "Further details on RACH for NR-U", 3GPP DRAFT; R2-1818503_RACH_NRU, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Spokane, WA, USA; 20181112 - 20181116, 2 November 2018 (2018-11-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051482359
HUAWEI, HISILICON: "Discussion on 2-step RACH procedure", 3GPP DRAFT; R1-1906051, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 3 May 2019 (2019-05-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051708093
INTERDIGITAL: "Random access in NR-Unlicensed", 3GPP DRAFT; R2-1906402 (R16 NRU WI AI 11211 RA IN NRU), 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, USA; 20190513 - 20190517, 13 May 2019 (2019-05-13), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051729867
NOKIA [TSG RAN WG1]: "LS Reply on 2-step RACH MsgA content and power control", 3GPP DRAFT; R1-1907948 LS REPLY ON 2-STEP RACH MSGA CONTENT AND POWER CONTROL, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 20 May 2019 (2019-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051740206
See also references of EP 4013140A4
HUAWEI, HISILICON: "Discussion on 2-step RACH procedure", 3GPP DRAFT; R1-1906051, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 3 May 2019 (2019-05-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051708093
INTERDIGITAL: "Random access in NR-Unlicensed", 3GPP DRAFT; R2-1906402 (R16 NRU WI AI 11211 RA IN NRU), 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, USA; 20190513 - 20190517, 13 May 2019 (2019-05-13), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051729867
NOKIA [TSG RAN WG1]: "LS Reply on 2-step RACH MsgA content and power control", 3GPP DRAFT; R1-1907948 LS REPLY ON 2-STEP RACH MSGA CONTENT AND POWER CONTROL, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 20 May 2019 (2019-05-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051740206
See also references of EP 4013140A4
Attorney, Agent or Firm:
BOHUI INTELLECTUAL PROPERTY (CN)
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