PHYSICAL DOWNLINK CONTROL CHANNEL RESOURCES FOR REDUCED CAPABILITY USER EQUIPMENT
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message to a base station, the UE capability message including an indication of a UE type, the UE type associated with at least one of a reduced bandwidth, or a reduced number of antennas, or a combination thereof, for the UE. The UE may monitor, based at least in part on a control resource set that is based at least in part on the UE type, a control channel for a downlink grant for downlink resources. The UE may receive, based at least in part on the monitoring, a grant identifying the downlink resources for communicating with the base station. The UE may communicate with the base station using the identified downlink resources.
1 . (canceled)
2 . A user equipment (UE) for wireless communication, comprising:
at least one processor; and
memory coupled with 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 entity, the UE capability message including an indication of a UE type for the UE;
monitor, based at least in part on a control resource set that is based at least in part on the UE type, a control channel for a downlink grant for downlink resources for communicating with the network entity;
receive, based at least in part on the control resource set and within a first set of symbols of a slot, a grant identifying the downlink resources;
receive, based at least in part on the control resource set, a repetition of the grant within a second set of symbols of the slot, the first set of symbols and the second set of symbols comprising contiguous symbols of the slot; and
communicate with the network entity using the identified downlink resources.
3 . The UE of claim 2 , wherein the repetition of the grant in the second set of symbols is received in accordance with a same parameter as the grant in received in the first set of symbols.
4 . The UE of claim 2 , wherein the first set of symbols and the second set of symbols have a same resource set identifier.
5 . The UE of claim 2 , wherein the first set of symbols and the second set of symbols are in a same frequency band.
6 . The UE of claim 2 , wherein the first set of symbols and the second set of symbols have a same duration.
7 . The UE of claim 2 , wherein the UE type is associated with at least a reduced bandwidth, a reduced quantity of antennas, a both.
8 . The UE of claim 2 , wherein the instructions are further executable by the at least one processor to cause the UE to:
identifying a quantity of control channel elements (CCEs) using a plurality of different aggregation levels (ALs) in the control resource set; and
selecting an AL to receive the grant based at least in part on the UE type.
9 . The UE of claim 2 , wherein the instructions are further executable by the at least one processor to cause the UE to:
identifying a quantity of control channel elements (CCEs) using a plurality of different aggregation levels (ALs) in the control resource set; and
selecting a quantity of symbols in the slot for the control channel to receive the grant based at least in part on the quantity of CCEs, wherein the quantity of symbols comprises three or more symbols in the slot.
10 . The UE of claim 9 , wherein the instructions are further executable by the at least one processor to cause the UE to:
reducing a bandwidth of the control channel for the UE based at least in part on the UE type.
11 . The UE of claim 9 , wherein the quantity of selected symbols in the slot is an integer division of a quantity of resource element groups (REGs) for the CCEs.
12 . The UE of claim 11 , wherein the instructions are further executable by the at least one processor to cause the UE to:
selecting a REG bundling size based at least in part on a quantity of symbols for the control resource set.
13 . The UE of claim 2 , wherein the instructions are further executable by the at least one processor to cause the UE to:
receiving, based at least in part on the control resource set, the grant 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 grant using a second set of subbands of the bandwidth part that are different from the first set of subbands.
14 . The UE of claim 13 , wherein the repetition of the grant is based at least in part on a resource block offset configured according to the control resource set.
15 . A network entity for wireless communication, comprising:
at least one processor; and
memory coupled with the at least one processor, the memory storing instructions executable by the at least one processor to cause the network entity to:
receive a user equipment (UE) capability message from a UE, the UE capability message including an indication of a UE type for the UE;
select, based at least in part on the UE type, a control resource set for a control channel for the UE to monitor;
transmit, based at least in part on the control resource set and within a first set of symbols of a slot, a grant identifying downlink resources for communicating with the UE according to the control resource set;
transmit, based at least in part on the control resource set, a repetition of the grant within a second set of symbols of the slot, the first set of symbols and the second set of symbols comprising contiguous symbols of the slot; and
communicate with the UE using the identified downlink resources.
16 . The network entity of claim 15 , wherein the repetition of the grant in the second set of symbols is received in accordance with a same parameter as the grant in received in the first set of symbols.
17 . The network entity of claim 15 , wherein the first set of symbols and the second set of symbols have a same resource set identifier.
18 . The network entity of claim 15 , wherein the first set of symbols and the second set of symbols are in a same frequency band.
19 . The network entity of claim 15 , wherein the first set of symbols and the second set of symbols have a same duration.
20 . A method for wireless communication by a user equipment (UE), comprising:
transmitting a UE capability message to a network entity, the UE capability message including an indication of a UE type for the UE;
monitoring, based at least in part on a control resource set that is based at least in part on the UE type, a control channel for a downlink grant for downlink resources for communicating with the network entity;
receiving, based at least in part on the control resource set and within a first set of symbols of a slot, a grant identifying the downlink resources;
receiving, based at least in part on the control resource set, a repetition of the grant within a second set of symbols of the slot, the first set of symbols and the second set of symbols comprising contiguous symbols of the slot; and
communicating with the network entity using the identified downlink resources.
21 . The method of claim 20 , wherein the repetition of the grant in the second set of symbols is received in accordance with a same parameter as the grant in received in the first set of symbols.