Decoding downlink control information received via a downlink control channel

A receiver, comprising:

• one or more memories;
• and
• one or more processors, coupled to the one or more memories, configured to:
• perform a successive cancellation list (SCL) decoding of downlink control information (DCI) received via a physical downlink control channel (PDCCH) based on:
• a detection of a receiver-specific scrambling sequence and a radio network temporary identifier (RNTI) corresponding to the receiver-specific scrambling sequence;
• and
• a skipping of a de-scrambling operation prior to the SCL decoding,
• wherein, to perform the SCL decoding, the one or more processors are configured to:
• start the SCL decoding of a bit-level PDCCH without first performing the de-scrambling operation;
• continue the SCL decoding with frozen bit locations treated as information bits up to a predetermined frozen bit location associated with a detection bit location;
• obtain frozen bits of a decoded DCI vector from a path for successive cancellation and a path for SCL at the detection bit location;
• obtain, from the frozen bits of the decoded DCI vector, a vector and an RNTI corresponding to the vector;
• complete the SCL decoding to obtain one or more decoded sequences;
• and
• perform the de-scrambling operation after SCL decoding and over the one or more decoded sequences, and
• wherein information regarding the receiver-specific scrambling sequence and the RNTI is not previously stored by the receiver;
• and
• refrain from decoding a plurality of possible receiver-specific scrambling sequences based on the skipping of the de-scrambling operation prior to the SCL decoding.

A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising:

• one or more instructions that, when executed by one or more processors of a device, cause the device to:
• perform a successive cancellation list (SCL) decoding of downlink control information (DCI) received via a physical downlink control channel (PDCCH) based on:
• a detection of a device-specific scrambling sequence and a radio network temporary identifier (RNTI) corresponding to the device-specific scrambling sequence;
• and
• a skipping of a de-scrambling operation prior to the SCL decoding,
• wherein the one or more instructions that, when executed by the one or more processors to perform the SCL decoding, cause the device to:
• start the SCL decoding of a bit-level PDCCH without first performing the de-scrambling operation;
• continue the SCL decoding with frozen bit locations treated as information bits up to a predetermined frozen bit location associated with a detection bit location;
• obtain frozen bits of a decoded DCI vector from a path for successive cancellation and a path for SCL at the detection bit location;
• obtain, from the frozen bits of the decoded DCI vector, a vector and an RNTI corresponding to the vector;
• complete the SCL decoding to obtain one or more decoded sequences;
• and
• perform the de-scrambling operation after SCL decoding and over the one or more decoded sequences, and
• wherein information regarding the device-specific scrambling sequence and the RNTI is not previously stored by the device;
• and
• refrain from decoding a plurality of possible device-specific scrambling sequences based on the skipping of the de-scrambling operation prior to the SCL decoding.