Granted Patent B2

US 12,513,724 · App. 17/031,285 · Granted Dec 30, 2025

Inventors: Le Liu (Fremont, CA); Alberto Rico Alvarino (San Diego, CA); Huilin Xu (San Diego, CA); Seyedkianoush Hosseini (San Diego, CA); Peter Pui Lok Ang (San Diego, CA); Tingfang Ji (San Diego, CA); Krishna Kiran Mukkavilli (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W72/53H04W8/24H04W24/08H04W72/0446H04W72/23

Abstract

Claims (75)

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

transmitting a UE capability message to a network device, the UE capability message including an indication of a UE type, the UE type identifying the UE as a reduced capability UE associated with at least one of a reduced bandwidth for the UE, or a reduced quantity of antennas for the UE, or a combination thereof;

selecting, at the UE, an aggregation level (AL) to receive a downlink grant based at least in part on the UE type and based at least in part on a quantity of control channel elements (CCEs) using a plurality of different ALs in a control resource set that is associated with reduced capability UEs;

monitoring, based at least in part on the control resource set, a control channel for the downlink grant;

receiving, based at least in part on the monitoring, a first portion of the downlink grant during a first two symbols of a first slot, the first slot comprising a first plurality of symbols, and the downlink grant identifying downlink resources for communicating with the network device;

receiving, based at least in part on the monitoring, a second portion of the downlink grant during a first two symbols of a second slot that is different from the first slot, the second slot comprising a second plurality of symbols; and

communicating with the network device using the identified downlink resources.

2 . The method of claim 1 , further comprising:

identifying the quantity of CCEs using the plurality of different ALs in the control resource set, wherein the AL is selected is based at least in part on the plurality of different ALs.

3 . The method of claim 1 , further comprising:

identifying the quantity of CCEs using the plurality of different ALs in the control resource set; and

selecting a quantity of symbols in a slot for the control channel to receive the downlink grant based at least in part on the quantity of CCEs, wherein the quantity of symbols comprises three or more symbols in the slot.

4 . The method of claim 3 , further comprising:

reducing a bandwidth of the control channel for the UE based at least in part on the UE type.

5 . The method of claim 3 , wherein the quantity of selected symbols in the slot is an integer division of a quantity of resource element groups REGs) for the CCEs.

6 . The method of claim 5 , further comprising:

selecting a REG bundling size based at least in part on a quantity of symbols for the control resource set.

7 . The method of claim 1 , wherein the second portion of the downlink grant comprises a repetition of the downlink grant.

8 . The method of claim 1 , wherein the second portion of the downlink grant comprises a repetition of the downlink grant, the method further comprising:

receiving, based at least in part on the control resource set, the downlink grant during the first slot and using a first set of subbands of a bandwidth part; and

receiving, based at least in part on the control resource set, the repetition of the downlink grant during the second slot that is different from the first slot and using a second set of subbands of the bandwidth part that are different from the first set of subbands.

9 . The method of claim 8 , wherein the repetition of the downlink grant during the second slot is based at least in part on a resource block offset configured according to the control resource set.

10 . The method of claim 1 , the second portion of the downlink grant comprises a repetition of the downlink grant, the method further comprising:

receiving, based at least in part on the control resource set, the downlink grant during the first slot and using a first bandwidth part; and

receiving, based at least in part on the control resource set, the repetition of the downlink grant during the second slot that is different from the first slot and using a second bandwidth part that is different from the first bandwidth part.

11 . The method of claim 10 , wherein the repetition of the downlink grant using the second bandwidth part is based at least in part on a bandwidth part offset configured according to the control resource set.

12 . The method of claim 10 , further comprising:

performing a retuning operation from the first bandwidth part to the second bandwidth part during a configured retuning gap configured not during a first symbol of the second slot.

13 . The method of claim 1 , further comprising:

combining the first portion of the downlink grant and the second portion of the downlink grant to receive the downlink grant.

14 . The method of claim 1 , wherein:

the first portion comprises first control information associated with the downlink grant, and

the second portion comprises second control information associated with the downlink grant different than the first control information.

15 . A method for wireless communication at a network device, comprising:

receiving a user equipment (UE) capability message from a UE, the UE capability message including an indication of a UE type, the UE type identifying the UE as a reduced capability UE associated with at least one of a reduced bandwidth for the UE, or a reduced quantity of antennas for the UE, or a combination thereof;

selecting an aggregation level (AL) to transmit a downlink grant based at least in part on the UE type and based at least in part on a quantity of control channel elements (CCEs) using a plurality of different ALs in a control resource set that is associated with reduced capability UEs;

selecting, based at least in part on the UE type, the control resource set for a control channel for the UE to monitor;

transmitting, based at least in part on the control resource set, a first portion of the downlink grant during a first two symbols of a first slot, the first slot comprising a first plurality of symbols, and the downlink grant identifying downlink resources for communicating with the UE;

transmitting, based at least in part on the control resource set, a second portion of the downlink grant during a first two symbols of a second slot that is different from the first slot, the second slot comprising a second plurality of symbols; and

communicating with the UE using the identified downlink resources.

16 . The method of claim 15 , wherein:

the first portion comprises first control information associated with the downlink grant, and

the second portion comprises second control information associated with the downlink grant different than the first control information.

17 . An apparatus for wireless communication at a user equipment (UE), comprising:

at least one processor; and

memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the UE to:

transmit a UE capability message to a network device, the UE capability message including an indication of a UE type, the UE type identifying the UE as a reduced capability UE associated with at least one of a reduced bandwidth for the UE, or a reduced quantity of antennas for the UE, or a combination thereof,

select, at the UE, an aggregation level (AL) to receive a downlink grant based at least in part on the UE type and based at least in part on a quantity of control channel elements (CCEs) using a plurality of different ALs in a control resource set that is associated with reduced capability UEs;

monitor, based at least in part on the control resource set, a control channel for the downlink grant;

receive, based at least in part on the monitoring, a first portion of the downlink grant during a first two symbols of a first slot, the first slot comprising a first plurality of symbols, and the downlink grant identifying downlink resources for communicating with the network device;

receive, based at least in part on the monitoring, a second portion of the downlink grant during a first two symbols of a second slot that is different from the first slot, the second slot comprising a second plurality of symbols; and

communicate with the network device using the identified downlink resources.

18 . The apparatus of claim 17 , wherein the instructions are further executable by the at least one processor to cause the UE to:

identify the quantity of CCEs using the plurality of different ALs in the control resource set.

19 . The apparatus of claim 17 , wherein the instructions are further executable by the at least one processor to cause the UE to:

identify the quantity of CCEs using the plurality of different ALs in the control resource set; and

select a quantity of symbols in a slot for the control channel to receive the downlink grant based at least in part on the quantity of CCEs, wherein the quantity of symbols comprises three or more symbols in the slot.

20 . The apparatus of claim 19 , wherein the instructions are further executable by the at least one processor to cause the UE to:

reduce a bandwidth of the control channel for the UE based at least in part on the UE type.

21 . The apparatus of claim 19 , wherein the quantity of selected symbols in the slot is an integer division of a number of resource element groups (REGs) for the CCEs.

22 . The apparatus of claim 21 , wherein the instructions are further executable by the at least one processor to cause the UE to:

select a REG bundling size based at least in part on a quantity of symbols for the control resource set.

23 . The apparatus of claim 17 , wherein the second portion of the downlink grant comprises a repetition of the downlink grant.

24 . The apparatus of claim 17 , wherein the second portion of the downlink grant comprises a repetition of the downlink grant, and wherein the instructions are further executable by the at least one processor to cause the UE to:

receive, based at least in part on the control resource set, the downlink grant during the first slot and using a first set of subbands of a bandwidth part; and

receive, based at least in part on the control resource set, the repetition of the downlink grant during the second slot that is different from the first slot and using a second set of subbands of the bandwidth part that are different from the first set of subbands, wherein the repetition of the downlink grant during the second slot is based at least in part on a resource block offset configured according to the control resource set.

25 . An apparatus for wireless communication at a network device, comprising:

at least one processor; and

memory coupled to the at least one processor, the memory storing instructions executable by the at least one processor to cause the network device to:

receive a user equipment (UE) capability message from a UE, the UE capability message including an indication of a UE type, the UE type identifying the UE as a reduced capability UE associated with at least one of a reduced bandwidth for the UE, or a reduced quantity of antennas for the UE, or a combination thereof;

select an aggregation level (AL) to transmit a downlink grant based at least in part on the UE type and based at least in part on a quantity of control channel elements (CCEs) using a plurality of different ALs in a control resource set that is associated with reduced capability UEs;

select, based at least in part on the UE type, the control resource set for a control channel for the UE to monitor;

transmit, based at least in part on the control resource set, a first portion of the downlink grant during a first two symbols of a first slot, the first slot comprising a first plurality of symbols, and the downlink grant identifying downlink resources for communicating with the UE;

transmit, based at least in part on the control resource set, a second portion of the downlink grant during a first two symbols of a second slot that is different from the first slot, the second slot comprising a second plurality of symbols; and

communicate with the UE using the identified downlink resources.

Assignments (1)

Continuity (2)

References Cited (29)