Methods and apparatuses are disclosed for adaptive control resource set and search space configurations. In one embodiment, a method implemented in a wireless device (WD) includes receiving a configuration for a plurality of search space configurations; and as a result of a trigger, switching from a first search space configuration to a second search space configuration of the plurality of search space configurations. In another embodiment, a method implemented in a network node includes configuring a WD with a plurality of search space configurations, at least one of the plurality of search space configurations associated with a trigger; and transmitting a physical downlink control channel (PDCCH) according to one of the plurality of search space configurations.
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