IP Library › Granted Patent US 12,375,247
Granted Patent B2
US 12,375,247 · App. 17/589,161 · Granted Jul 29, 2025

Random access procedure in multiple transmission and reception points

Inventors: Ali Cagatay Cirik (Chantilly, VA); Esmael Hejazi Dinan (McLean, VA); Yunjung Yi (Vienna, VA); Hua Zhou (Vienna, VA); Alireza Babaei (Fairfax, VA); Kyungmin Park (Vienna, VA)
Assignee: Ofinno, LLC
H04W74/0833H04L5/0053H04L5/0092H04W72/23
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Quick Facts
Patent No.
US 12,375,247
App. No.
17/589,161
Granted
Jul 29, 2025
Kind
B2
Abstract

A wireless device receives, via a first control resource set (coreset) with a first coreset group index, a physical downlink control channel (PDCCH) order initiating a random-access procedure. A random-access preamble is transmitted for the random-access procedure. A downlink control information (DCI), scheduling a random-access response corresponding to the random-access preamble, is received via a second coreset with a second coreset group index. The DCI is received based on: a first transmission configuration indicator (TCI) state of the first coreset when the first coreset group index is the same as the second coreset group index, and a second TCI state of the second coreset when the first coreset group index is different from the second coreset group index.

Claims (46)

1. A method comprising:

receiving, by a wireless device, one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate:

a first control resource set (coreset) group index for one or more first coresets; and

a second coreset group index for one or more second coresets;

receiving, via a first coreset of the one or more first coresets, a physical downlink control channel (PDCCH) order triggering a random-access procedure;

transmitting a random-access preamble for the random-access procedure; and

receiving, via a second coreset associated with a Type1 PDCCH common search space (CSS) set with the second coreset group index, downlink control information (DCI) scheduling a random-access response corresponding to the random-access preamble, wherein, based on the first coreset group index of the first coreset that the wireless device receives the PDCCH order being different from the second coreset group index, the DCI is received using demodulation reference signal (DM-RS) antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

2. The method of claim 1 , wherein the random-access procedure is for a cell.

3. The method of claim 1 , wherein the one or more configuration parameters further indicate the one or more first coresets and the one or more second coresets are for an active downlink bandwidth part (BWP) of a cell.

4. The method of claim 1 , further comprising receiving the random-access response using the DM-RS antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

5. The method of claim 1 , further comprising:

receiving, via the second coreset of the one or more second coresets, a second PDCCH order triggering a second random-access procedure;

transmitting a second random-access preamble for the second random-access procedure; and

receiving, via the second coreset associated with a Type1 PDCCH CSS set with the second coreset group index, second DCI scheduling a second random-access response corresponding to the second random-access preamble, wherein the second DCI is received using DM-RS antenna port quasi co-location properties of the second PDCCH order.

6. The method of claim 5 , further comprising receiving the second random-access response corresponding to the second random-access preamble, wherein the second random-access response is received using the DM-RS antenna port quasi co-location properties of the second PDCCH order.

7. The method of claim 1 , wherein the DCI schedules a physical downlink shared channel (PDSCH) comprising the random-access response.

8. The method of claim 1 , wherein the DCI is addressed to a random-access RNTI (RA-RNTI).

9. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate:

a first control resource set (coreset) group index for one or more first coresets; and

a second coreset group index for one or more second coresets;

receive, via a first coreset of the one or more first coresets, a physical downlink control channel (PDCCH) order triggering a random-access procedure;

transmit a random-access preamble for the random-access procedure; and

receive, via a second coreset associated with a Type1 PDCCH common search space (CSS) set with the second coreset group index, downlink control information (DCI) scheduling a random-access response corresponding to the random-access preamble, wherein, based on the first coreset group index of the first coreset that the wireless device receives the PDCCH order being different from the second coreset group index, the DCI is received using demodulation reference signal (DM-RS) antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

10. The wireless device of claim 9 , wherein the random-access procedure is for a cell.

11. The wireless device of claim 9 , wherein the one or more configuration parameters further indicate the one or more first coresets and the one or more second coresets are for an active downlink bandwidth part (BWP) of a cell.

12. The wireless device of claim 9 , wherein the instructions further cause the wireless device to receive the random-access response using the DM-RS antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

13. The wireless device of claim 9 , wherein the instructions further cause the wireless device to:

receive, via the second coreset of the one or more second coresets, a second PDCCH order triggering a second random-access procedure;

transmit a second random-access preamble for the second random-access procedure; and

receive, via the second coreset associated with a Type1 PDCCH CSS set with the second coreset group index, second DCI scheduling a second random-access response corresponding to the second random-access preamble, wherein the second DCI is received using DM-RS antenna port quasi co-location properties of the second PDCCH order.

14. The wireless device of claim 13 , wherein the instructions further cause the wireless device to receive the second random-access response corresponding to the second random-access preamble, wherein the second random-access response is received using the DM-RS antenna port quasi co-location properties of the second PDCCH order.

15. The wireless device of claim 9 , wherein the DCI schedules a physical downlink shared channel (PDSCH) comprising the random-access response.

16. The wireless device of claim 9 , wherein the DCI is addressed to a random-access RNTI (RA-RNTI).

17. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

receive one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate:

a first control resource set (coreset) group index for one or more first coresets; and

a second coreset group index for one or more second coresets;

receive, via a first coreset of the one or more first coresets, a physical downlink control channel (PDCCH) order triggering a random-access procedure;

transmit a random-access preamble for the random-access procedure; and

receive, via a second coreset associated with a Type1 PDCCH common search space (CSS) set with the second coreset group index, downlink control information (DCI) scheduling a random-access response corresponding to the random-access preamble, wherein based on the first coreset group index of the first coreset that the wireless device receives the PDCCH order being different from the second coreset group index, the DCI is received using demodulation reference signal (DM-RS) antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

18. The non-transitory computer-readable medium of claim 17 , wherein the random-access procedure is for a cell.

19. The non-transitory computer-readable medium of claim 17 , wherein the one or more configuration parameters further indicate the one or more first coresets and the one or more second coresets are for an active downlink bandwidth part (BWP) of a cell.

20. The non-transitory computer-readable medium of claim 17 , wherein the instructions further cause the wireless device to receive the random-access response using the DM-RS antenna port quasi co-location properties of the second coreset associated with the Type1 PDCCH CSS set.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 20, 2022
From: CIRIK, ALI; DINAN, ESMAEL; YI, YUNJUNG; ZHOU, HUA; BABAEI, ALIREZA; PARK, KYUNGMIN
To: OFINNO, LLC
Reel/Frame 059653/0862 →
Continuity (4)
Continuation PCTUS2020044428 · Jul 31, 2020
Provisional Application 62882069 · Aug 2, 2019
Provisional Application 62880880 · Jul 31, 2019
Related Publication 20220159733A1 · May 19, 2022
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R1-1907535; 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; ; Agenda Item:7.2.8.5; Source: Huawei, HiSilicon; Title:Evaluation results of panel-specific beam selection. [cited by applicant]
R1-1907552; 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; ; Agenda Item:7.2.8.5; Source: Huawei, HiSilicon; Title: UL/DL BM for overhead reduction. [cited by applicant]
R1-1907553; 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; ; Agenda Item:7.2.8.5; Source: Huawei, HiSilicon; Title: Discussion on panel ID and usage. [cited by applicant]
R1-1907554; 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; ; Agenda Item:7.2.8.5; Source: Huawei, HiSilicon; Title:Discussion on reporting content and format for L1-SINR reporting. [cited by applicant]
R1-1907555; 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; ; Agenda Item:7.2.8.5; Source: Huawei, HiSilicon; Title:Beam failure recovery for SCell without new beam information. [cited by applicant]
R1-1907650 R1#97 FL_summary_MultiBeam(MB1); 3GPP TSG RAN WG1 Meeting #97; Reno, USA, May 13-17, 2019; Agenda item: 7.2.8.3; Source: LG Electronics; Title: Feature lead summary of Enhancements on Multi-beam Operations; D… [cited by applicant]
R1-1720278; 3GPP TSG RAN WG1 Meeting 91; Reno, USA, Nov. 27-Dec. 1, 2017; Agenda Item: 7.1.4.2; Source: Samsung; Title: Remaining details on PRACH procedure. [cited by applicant]
R1-1806035; 3GPP TSG RAN WG1 Meeting #93; Busan, Korea, May 21-25, 2018; Source: vivo Title: Remaining issues on RACH procedure. [cited by applicant]
R1-1903749; 3GPP TSG RAN WG1 Meeting #96; Athens, Greece, Feb. 25-Mar. 1, 2019; Title: CR on QCL assumption for receiving PDCCH for RAR. [cited by applicant]
International Search Report and Written Opinion of the International Searching Authority mailed Oct. 26, 2020, in International Application No. PCT/US2020/044428. [cited by applicant]
Chinese Office Action mailed Mar. 12, 2025 in CN Patent Application No. 2020800680687. [cited by applicant]
R1-1717062; 3GPP TSG RAN WG1 Meeting #90bis; Prague, Czech Republic, Oct. 9-13, 2017; Agenda Item: 7.3.1.2; Source: Huawei, HiSilicon; Title: CORESET configuration and search space design; Document for: Discussion and d… [cited by applicant]