BACKGROUND

In New Radio (NR) for Fifth Generation (5G) wireless systems, the structure and design for the physical downlink control channel (PDCCH) uses two transmission modes of interleaving units and non-interleaving units known as Resource Element Group (REG) bundles. Each REG bundle consists of multiple REGs in time or frequency for joint channel estimation. Slot-based and non-slot-based transmissions and different rates of monitoring for PDCCH are also defined in NR for 5G wireless systems.

SUMMARY

Methods and systems for detecting an enhanced massive mobile broadband (eMBB) physical downlink control channel (PDCCH) in the presence of for ultra-reliable low latency communication (URLLC) users are disclosed. A eMBB wireless transmit/receive unit (WTRU) may receive a eMBB control resource set (CORESET) configuration for a CORESET including a PDCCH preemption indicator. If PDCCH preemption is enabled based on the PDCCH preemption indicator, the eMBB WTRU may identify and remove preempted resource element groups (REGs) in the eMBB CORESET by comparing channel estimates for each REG bundle in the eMBB CORESET. The WTRU may perform channel estimation based on remaining REGs in the eMBB CORESET and detect the PDCCH by performing blind decoding, based on a received signal, on the remaining REGs in the eMBB CORESET. If PDCCH preemption is not enabled, the WTRU may perform channel estimation on each REG bundle in the eMBB CORESET and detect the PDCCH by performing blind decoding, based on the received signal, on all REGs in the eMBB CORESET.

