EP-4740352-A1 - ASSOCIATING MULTIPLE-STAGE DOWNLINK CONTROL INFORMATION

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of an association between firststage downlink control information (DCI) and second-stage DCI. The UE may recover the second-stage DCI based at least in part on the indication of the association. Numerous other aspects are described.

Inventors

• XU, HUILIN
• WANG, XIAO FENG
• SUN, JING

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260513

Application Date

20240523

Claims (20)

1. 1. An apparatus for wireless communication at a user equipment (UE), comprising: one or more memories; and one or more processors, coupled to the one or more memories, that, individually or collectively, are configured to: receive an indication of an association between first-stage downlink control information (DCI) and second-stage DCI; and recover the second-stage DCI based at least in part on the indication of the association.
2. 2. The apparatus of claim 1, wherein the one or more processors are further configured to: receive first physical downlink control channel (PDCCH) configuration information that is associated with the first-stage DCI; and receive second PDCCH configuration information that is associated with the second- stage DCI, wherein the indication of the association between the first-stage DCI and the second- stage DCI comprises the first PDCCH configuration information and the second PDCCH configuration information specifying a same identifier.
3. 3. The apparatus of claim 2, wherein the same identifier is a two-stage DCI search space (SS) association identifier, wherein the first PDCCH configuration information comprises a first SS set configuration that indicates the two-stage DCI SS association identifier, and wherein the second PDCCH configuration information comprises a second SS set configuration that indicates the two-stage DCI SS association identifier.
4. 4. The apparatus of claim 2, wherein the same identifier is a two-stage DCI control resource set (CORESET) association identifier, wherein the first PDCCH configuration information comprises a first CORESET configuration that specifies the two-stage DCI CORESET association identifier, and wherein the second PDCCH configuration information comprises a second CORESET configuration that specifies the two-stage DCI CORESET association identifier.
5. 5. The apparatus of claim 4, wherein the first PDCCH configuration information comprises a first search space (SS) set configuration that indicates a particular SS set identifier, and wherein the second PDCCH configuration information comprises a second SS set configuration that indicates the particular SS set identifier.
6. 6. The apparatus of claim 1, wherein the second-stage DCI is one of multiple second-stage DCIs, and wherein the indication of the association indicates that the first-stage DCI is associated with each second-stage DCI of the multiple second-stage DCIs.
7. 7. The apparatus of claim 6, wherein the one or more processors are further configured to: receive first physical downlink control channel (PDCCH) configuration information that is associated with the first-stage DCI, wherein the first PDCCH configuration information indicates a particular two-stage DCI association identifier; receive second PDCCH configuration information for a first second-stage DCI of the multiple second-stage DCIs, wherein the second PDCCH configuration information indicates the particular two-stage DCI association identifier; and receive third PDCCH configuration information for a second second-stage DCI of the multiple second-stage DCIs, wherein the third PDCCH configuration information indicates the particular two-stage DCI association identifier.
8. 8. The apparatus of claim 7, wherein the particular two-stage DCI association identifier comprises at least one of: a two-stage DCI search space (SS) association identifier, or a two-stage DCI control resource set (CORESET) association identifier.
9. 9. The apparatus of claim 1, wherein the one or more processors are further configured to: receive the first-stage DCI in a first carrier; and receive the second-stage DCI in a second carrier.
10. 10. The apparatus of claim 9, wherein the one or more processors are further configured to: receive first physical downlink control channel (PDCCH) configuration information for the first-stage DCI that indicates a particular search space (SS) set identifier; and receive second PDCCH configuration information for the second-stage DCI that indicates the particular SS set identifier, wherein the indication of the association is based at least in part on the particular SS set identifier.
11. 11. The apparatus of claim 1, wherein the one or more processors are further configured to: recover the first-stage DCI based at least in part on a first DCI format; and recover the second-stage DCI based at least in part on a second DCI format and a DCI format association between the first-stage DCI and the second-stage DCI.
12. 12. The apparatus of claim 1, wherein the one or more processors are further configured to: receive the first-stage DCI, wherein the first-stage DCI indicates a monitoring occasion associated with receiving the second-stage DCI; and receive the second-stage DCI based at least in part on the monitoring occasion.
13. 13. The apparatus of claim 1, wherein the one or more processors are further configured to: receive the first-stage DCI, wherein the first-stage DCI; and receive the second-stage DCI based at least in part on a monitoring window.
14. 14. The apparatus of claim 1, wherein the one or more processors are further configured to: determine a blind detection threshold based at least in part on a monitoring duration associated with the second-stage DCI; and recover the second-stage DCI based at least in part on the blind detection threshold.
15. 15. The apparatus of claim 14, wherein the one or more processors, to determine the blind detection threshold, are configured to: determine the blind detection threshold based at least in part on a number of configured physical downlink control channel (PDCCH) candidates associated with a search space configuration for the second-stage DCI.
16. 16. An apparatus for wireless communication at a network node, comprising: one or more memories; and one or more processors, coupled to the one or more memories, that, individually or collectively, are configured to: transmit an indication of an association between first-stage downlink control information (DCI) and second-stage DCI; and transmit at least the first-stage DCI based at least in part on the association.
17. 17. The apparatus of claim 16, wherein the one or more processors are further configured to: transmit the second-stage DCI based at least in part on the association.
18. 18. The apparatus of claim 16, wherein the one or more processors are further configured to: transmit first physical downlink control channel (PDCCH) configuration information that is associated with the first-stage DCI; and transmit second PDCCH configuration information that is associated with the second- stage DCI, wherein the indication of the association between the first-stage DCI and the second- stage DCI comprises the first PDCCH configuration information and the second PDCCH configuration information specifying a same identifier.
19. 19. The apparatus of claim 18, wherein the same identifier is a two-stage DCI search space (SS) association identifier, wherein the first PDCCH configuration information comprises a first SS set configuration that indicates the two-stage DCI SS association identifier, and wherein the second PDCCH configuration information comprises a second SS set configuration that indicates the two-stage DCI SS association identifier.
20. 20. The apparatus of claim 18, wherein the same identifier is a two-stage DCI control resource set (CORESET) association identifier, wherein the first PDCCH configuration information comprises a first CORESET configuration that specifies the two-stage DCI CORESET association identifier, and wherein the second PDCCH configuration information comprises a second CORESET configuration that specifies the two-stage DCI CORESET association identifier.

Description

ASSOCIATING MULTIPLE-STAGE DOWNLINK CONTROL INFORMATION CROSS-REFERENCE TO RELATED APPLICATION [0001] This Patent Application claims priority to U.S. Patent Application No. 18/348,206, filed on July 6, 2023, entitled “ASSOCIATING MULTIPLE-STAGE DOWNLINK CONTROL INFORMATION,” and assigned to the assignee hereof. The disclosure of the prior Application is considered part of and is incorporated by reference into this Patent Application. FIELD OF THE DISCLOSURE [0002] Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for associating multiple-stage downlink control information. BACKGROUND [0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC- FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3 GPP). [0004] A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the network node to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples). [0005] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY [0006] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving an indication of an association between first-stage downlink control information (DCI) and second-stage DCI. The method may include recovering the second-stage DCI based at least in part on the indication of the association. [0007] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include transmitting an indication of an association between first-stage DCI and second-stage DCI. The method may include transmitting at least the first-stage DCI based at least in part on the association. [0008] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured, individually or collectively, to receive an indication of an association between first-stage DCI and second-stage DCI. The one or more processors may be configured to recover the second-stage DCI based at least in part on the indication of the association. [0009] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured, individually or collectively, to transmit an indication of an association