IP Library › Granted Patent US 12684584
Granted Patent B2
US 12684584 · App. 18/303,472 · Granted Jul 14, 2026

Blind decoding improvements

Inventors: Diana Maamari (San Diego, CA); Wooseok Nam (San Diego, CA); Ahmed Elshafie (San Diego, CA); Huilin Xu (Temecula, CA); Mickael Mondet (Louannec, FR); Peerapol Tinnakornsrisuphap (San Diego, CA)
Assignee: Qualcomm Incorporated
H04W72/23H04L1/0038
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Quick Facts
Patent No.
US 12684584
App. No.
18/303,472
Granted
Jul 14, 2026
Kind
B2
Abstract

Certain aspects of the present disclosure provide techniques for bind decoding enhancements. A method performed by a user equipment (UE) includes obtaining control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction, obtaining an indication that only traffic of the first link direction is expected to be communicated in a first period of time, performing, based on the control configuration information, a first number of blind decodes during the first period of time to receive the DCI for the first link direction, and during the first time period, refraining from performing a second number of blind decodes associated with receiving the DCI for the second link direction based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time.

Claims (112)

1 . A method for wireless communication by a user equipment (UE), comprising:

obtaining control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction;

obtaining an indication that only traffic of the first link direction is expected to be communicated in a first period of time;

performing, based on the control configuration information and the indication, a first number of blind decodes, of a total number of blind decodes, during the first period of time to receive the DCI for the first link direction; and

during the first time period, refraining from performing a second number of blind decodes, of the total number of blind decodes, associated with receiving the DCI for the second link direction based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time;

wherein, based on only the traffic of the first link direction being expected to be communicated in the first period of time, one or more bits included in a DCI format identifier field of the DCI for the first link direction carry information for one or more other fields of the DCI for the first link direction;

wherein:

the one or more other fields comprise at least one of:

a time domain resource allocation (TDRA) field; or

a frequency domain resource allocation (FDRA) field; or

the one or more bits included in the DCI format identifier field carry information related to transmit power control.

2 . The method of claim 1 , wherein the control configuration information comprises:

an indication of one or more control resource sets (CORESETs) for receiving the DCI;

an indication of one or more search space sets (SSSs) for receiving the DCI;

an indication of one or more monitoring occasions for receiving the DCI; and

the total number of blind decodes for receiving the DCI.

3 . The method of claim 1 , wherein obtaining the indication that only the traffic of the first link direction is expected to be communicated in a first period of time is based on at least one of:

a periodic traffic arrival times associated with the traffic of the first link direction and traffic of the second link direction;

an end of bust indication associated with the traffic of the first link direction or traffic of the second link direction;

a PDCCH skipping indication associated with the traffic of the first link direction or traffic of the second link direction;

a discontinuous reception (DRX) media access control-control element (MAC-CE) associated with the traffic of the first link direction or traffic of the second link direction;

a packet delay budget associated with the traffic of the first link direction or traffic of the second link direction;

one or more retransmission timers associated with the traffic of the first link direction or traffic of the second link direction.

4 . The method of claim 1 , further comprising communicating the traffic of the first link direction using scheduled time-frequency resources indicated in the DCI for the first link direction.

5 . The method of claim 1 , wherein refraining from performing the second number of blind decodes comprises one of:

performing zero blind decodes for receiving the DCI for the second link direction; or

performing a reduced number of blind decodes, relative to the second number of blind decodes, for receiving the DCI for the second link direction.

6 . The method of claim 1 , further comprising receiving additional configuration information from a network entity indicating to refrain from performing the second number of blind decodes during the first period of time when the UE obtains the indication that only the traffic of the first link direction is expected to be communicated in the first period of time.

7 . The method of claim 1 , further comprising receiving the DCI for the first link direction based on the performing the first number of blind decodes.

8 . The method of claim 7 , wherein:

the UE is configured to transmit feedback information for the DCI for the first link direction; and

based on the UE being configured to transmit the feedback information for the DCI for the first link direction, the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields.

9 . The method of claim 7 , further comprising receiving the indication indicating that only the traffic of the first link direction is to be expected to be communicated in the first period of time.

10 . The method of claim 9 , wherein the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields further based on the indication indicating that only the traffic of the first link direction is to be expected to be communicated in the first period of time.

11 . The method of claim 7 , wherein the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields further based on the first number of blind decodes being assigned to the DCI for the first link direction and the second number of blind decodes being assigned to the DCI for the second link direction.

12 . A method for wireless communication by a user equipment (UE), comprising:

obtaining control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction;

obtaining an indication that only traffic of the first link direction is expected to be communicated in a first period of time;

performing, based on the control configuration information and the indication, a first number of blind decodes, of a total number of blind decodes, during the first period of time to receive the DCI for the first link direction; and

during the first time period, refraining from performing a second number of blind decodes, of the total number of blind decodes, associated with receiving the DCI for the second link direction based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time;

performing, based on the control configuration information, the first number of blind decodes to receive the DCI for the first link direction during a second period of time that does not overlap with the first period of time; and

performing, based on the control configuration information, the second number of blind decodes to receive the DCI for the second link direction during the second period of time.

13 . The method of claim 1 , wherein one of:

the first link direction comprises a downlink direction and the second link direction comprises an uplink direction; or

the first link direction comprises an uplink direction and the second link direction comprises a downlink direction.

14 . A method for wireless communication by a network entity, comprising:

transmitting, to a user equipment (UE), control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction;

obtaining an indication that only traffic of the first link direction is expected to be communicated in a first period of time; and

transmitting DCI for the first link direction, wherein, based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time, the DCI for the first link direction comprises a DCI format identifier field that includes one or more bits carrying information for one or more other fields of the DCI for the first link direction;

wherein:

the one or more other fields comprise at least one of:

a time domain resource allocation (TDRA) field; or

a frequency domain resource allocation (FDRA) field; or

the one or more bits included in the DCI format identifier field carry information related to transmit power control.

15 . The method of claim 14 , wherein the control configuration information comprises:

an indication of one or more control resource sets (CORESETs) for receiving the DCI;

an indication of one or more search space sets (SSSs) for receiving the DCI;

an indication of one or more monitoring occasions for receiving the DCI; and

the total number of blind decodes for receiving the DCI.

16 . The method of claim 14 , wherein obtaining the indication that only the traffic of the first link direction is expected to be communicated in a first period of time is based on at least one of:

a periodic traffic arrival times associated with the traffic of the first link direction and traffic of the second link direction;

an end of bust indication associated with the traffic of the first link direction or traffic of the second link direction;

a PDCCH skipping indication associated with the traffic of the first link direction or traffic of the second link direction;

a discontinuous reception (DRX) media access control-control element (MAC-CE) associated with the traffic of the first link direction or traffic of the second link direction;

a packet delay budget associated with the traffic of the first link direction or traffic of the second link direction;

one or more retransmission timers associated with the traffic of the first link direction or traffic of the second link direction.

17 . The method of claim 14 , wherein:

the network entity is configured to receive feedback information for the DCI for the first link direction; and

based on the network entity being configured to receive the feedback information for the DCI for the first link direction, the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields.

18 . The method of claim 14 , further comprising transmitting, to the UE, the indication that only the traffic of the first link direction is to be expected to be communicated in the first period of time.

19 . The method of claim 18 , wherein the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields further based on the indication indicating that only the traffic of the first link direction is to be expected to be communicated in the first period of time.

20 . The method of claim 14 , wherein the one or more bits included in the DCI format identifier field of the DCI for the first link direction carry the information for one or more other fields further based on the first number of blind decodes being assigned to scheduling grants for the first link direction and the second number of blind decodes being assigned scheduling grants for the second link direction.

21 . The method of claim 14 , wherein one of:

the first link direction comprises a downlink direction and the second link direction comprises an uplink direction; or

the first link direction comprises an uplink direction and the second link direction comprises a downlink direction.

22 . A user equipment (UE), comprising:

a memory comprising executable instructions; and

a processor configured to execute the executable instructions and cause the UE to:

obtain control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction;

obtain an indication that only traffic of the first link direction is expected to be communicated in a first period of time;

perform, based on the control configuration information and the indication, a first number of blind decodes, of a total number of blind decodes, during the first period of time to receive the DCI for the first link direction; and

during the first time period, refrain from performing a second number of blind decodes, of the total number of blind decodes, associated with receiving the DCI for the second link direction based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time;

wherein, based on only the traffic of the first link direction being expected to be communicated in the first period of time, one or more bits included in a DCI format identifier field of the DCI for the first link direction carry information for one or more other fields of the DCI for the first link direction;

wherein:

the one or more other fields comprise at least one of:

a time domain resource allocation (TDRA) field; or

a frequency domain resource allocation (FDRA) field; or

the one or more bits included in the DCI format identifier field carry information related to transmit power control.

23 . The UE of claim 22 , wherein the processor is configured to cause the UE to obtain the indication that only the traffic of the first link direction is expected to be communicated in a first period of time based on at least one of:

a periodic traffic arrival times associated with the traffic of the first link direction and traffic of the second link direction;

an end of bust indication associated with the traffic of the first link direction or traffic of the second link direction;

a PDCCH skipping indication associated with the traffic of the first link direction or traffic of the second link direction;

a discontinuous reception (DRX) media access control-control element (MAC-CE) associated with the traffic of the first link direction or traffic of the second link direction;

a packet delay budget associated with the traffic of the first link direction or traffic of the second link direction;

one or more retransmission timers associated with the traffic of the first link direction or traffic of the second link direction.

24 . The UE of claim 22 , wherein, in order to refrain from performing the second number of blind decodes, the processor is configured to cause the UE to one of:

perform zero blind decodes for receiving the DCI for the second link direction; or

perform a reduced number of blind decodes, relative to the second number of blind decodes, for receiving the DCI for the second link direction.

25 . The UE of claim 22 , wherein:

the processor is further configured to cause the UE to receive the DCI for the first link direction based on the performing the first number of blind decodes; and

based on only the traffic of the first link direction being expected to be communicated in the first period of time, one or more bits included in a DCI format identifier field of the DCI for the first link direction carry information for one or more other fields of the DCI for the first link direction.

26 . A network entity, comprising:

a memory comprising executable instructions; and

a processor configured to execute the executable instructions and cause the network entity to:

transmit, to a user equipment (UE), control configuration information for receiving downlink control information (DCI) for at least a first link direction and a second link direction;

obtain an indication that only traffic of the first link direction is expected to be communicated in a first period of time; and

transmit DCI for the first link direction, wherein, based on the indication that only the traffic of the first link direction is expected to be communicated in the first period of time, the DCI for the first link direction comprises a DCI format identifier field that includes one or more bits carrying information for one or more other fields of the DCI for the first link direction;

wherein:

the one or more other fields comprise at least one of:

a time domain resource allocation (TDRA) field; or

a frequency domain resource allocation (FDRA) field; or

the one or more bits included in the DCI format identifier field carry information related to transmit power control.