Multicast broadcast services control channel reliability

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

• receiving, from a base station and at the UE of a group of UEs, control signaling indicating a link between a first search space set and a second search space set used for a multicast broadcast service, wherein a first downlink control channel for the group of UEs is transmitted in the first search space set and a second downlink control channel is transmitted in the second search space set, and wherein the link indicates that at least one parameter associated with the second search space set is the same as at least one parameter associated with the first search space set;
• monitoring the first search space set for a first instance of control information in the first downlink control channel and the second search space set for a second instance of the control information in the second downlink control channel;
• and
• decoding the first instance or the second instance of the control information, or both, based at least in part on the monitoring.

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

• means for receiving, from a base station and at the UE of a group of UEs, control signaling indicating a link between a first search space set and a second search space set used for a multicast broadcast service, wherein a first downlink control channel for the group of UEs is transmitted in the first search space set and a second downlink control channel is transmitted in the second search space set, and wherein the link indicates that at least one parameter associated with the second search space set is the same as at least one parameter associated with the first search space set;
• means for monitoring the first search space set for a first instance of control information in the first downlink control channel and the second search space set for a second instance of the control information in the second downlink control channel;
• and
• means for decoding the first instance or the second instance of the control information, or both, based at least in part on the monitoring.

A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:

• receive, from a base station and at the UE of a group of UEs, control signaling indicating a link between a first search space set and a second search space set used for a multicast broadcast service, wherein a first downlink control channel for the group of UEs is transmitted in the first search space set and a second downlink control channel is transmitted in the second search space set, and wherein the link indicates that at least one parameter associated with the second search space set is the same as at least one parameter associated with the first search space set;
• monitor the first search space set for a first instance of control information in the first downlink control channel and the second search space set for a second instance of the control information in the second downlink control channel;
• and
• decode the first instance or the second instance of the control information, or both, based at least in part on the monitoring.