Patent ID: 11963182
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A wireless device comprising:
a communication interface; and
a processing circuit communicatively connected to the communication interface, and configured to:
receive a downlink signal, wherein the downlink signal comprises a Physical Downlink Control Channel (PDCCH) and a Physical downlink Shared Channel (PDSCH), the PDCCH having first downlink Control Information (DCI) indicating second downlink control information (DCI) in the PDSCH;
perform one of encoding and decoding user data in the PDSCH based on the first DCI and second DCI the first DCI comprising a Modulation and Coding Scheme, MCS, field which has 5 bits, and 3 bits of the MCS field being used to indicate a ratio of resource elements, RE, used for the second DCI over an effective RE number in allocated Physical Resource blocks, PRBs; and
determine a number of REs occupied by the second DCI based on the 3 bits of the MCS field of the first DCI by calculating the following:

NREexDCI=┌NPRBDL×RexDCIrateRE┐×NsymbolRE 

where NREexDCI refers to the number of REs of the second DCI, NPRBDL refers to an allocated Physical Resource Block, PRB, number indicated by the first DCI, NsymbolRE refers to an effective RE number per Orthogonal Frequency Division Multiplexing, OFDM, symbol within the allocated PRBs and RexDCIrateRE refers to the 3-bit of the MCS field of the first DCI, and ┐ ┌ refers to a ceiling function.