Search space monitoring

A wireless device comprising processing circuitry and a communication interface, the processing circuitry being configured to cause the wireless device to:

• receive a physical downlink control channel (PDCCH) in a control-resource set, CORESET, of resource elements configured to carry downlink control information, the CORESET having a property affecting blind detection in the CORESET;
• monitor at least one search space to detect a control message related to the wireless device based on the property affecting blind detection in the CORESET;
• for a first location of the control message with respect to at least one of the CORESET and the at least one search space, determine at least one of a first assumed quasi co-location and a first beam pair link for the wireless device, based on the first location of the control message;
• and
• for a second location of the control message with respect to at least one of the CORESET and the at least one search space, the second location being different from the first location, determine at least one of a second assumed quasi co-location and a second beam pair link for the wireless device, based on the second location of the control message.

A method for monitoring search spaces, a potential set of search spaces to monitor containing search spaces of different aggregation levels, the method being performed by a wireless device, the method comprising:

• receiving a physical downlink control channel (PDCCH) in a control-resource set, CORESET, of resource elements configured to carry downlink control information, the CORESET having a property affecting blind detection in the CORESET;
• monitoring a search space to detect a control message related to the wireless device, the search space having a distribution of aggregation levels and being selected based on the property affecting blind detection in the CORESET;
• deriving a length of at least one bitfield in the control message related to the wireless device based on the a location of the control message with respect to at least one of the CORESET and the particular search space;
• deriving the length of one or more of the at least one bitfield in the control message to be relatively longer if the location of the control message is in the beginning of a slot;
• and
• deriving the length of one or more of the at least one bitfield in the control message to be relatively shorter if the location of the control message is not in the beginning of the slot.

A wireless device for monitoring search spaces, a potential set of search spaces to monitor containing search spaces of different aggregation levels, the wireless device comprising processing circuitry and a communication interface, the processing circuitry being configured to cause the wireless device to:

• receive a physical downlink control channel (PDCCH) in a control-resource set, CORESET, of resource elements configured to carry control information, the CORESET having a property affecting blind detection in the CORESET;
• monitor a selected search space to detect a control message related to the wireless device, the selected search space having a distribution of aggregation levels and being selected based on the property affecting blind detection in the CORESET;
• derive a length of at least one bitfield in the control message related to the wireless device based on a location of the control message with respect to at least one of the CORESET and the selected search space;
• derive the length of one or more of the at least one bitfield in the control message to be relatively longer if the location of the control message is in the beginning of a slot;
• and
• derive the length of one or more of the at least one bitfield in the control message to be relatively shorter if the location of the control message is not in the beginning of the slot.