Patent ID: 11936576
Assignee: GOOGLE LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A method of receiving a non-orthogonal multiple access decoding by a base station from a user equipment, the method comprising:
decoding, by the base station, a first part of a codeword received from a user equipment;
detecting a second part of the received codeword using multi-user detection that produces a first multi-user detection outcome;
determining whether the decoding of the first part of the codeword is successful; and
based on the determining that the decoding of the first part of the codeword is not successful:
combining the first part and the second part of the codeword to form a combined codeword;
decoding the combined codeword;
determining if the decoding of the combined codeword is successful; and
based on the determining that the decoding of the combined codeword is successful, sending an acknowledgement to the user equipment; or
based on the determining that the decoding of the combined codeword is not successful:
dropping the second part of the codeword:
combining the first part of the codeword and another second part of the codeword from a second multi-user detection outcome to produce a second combined codeword;
determining if the decoding of the second combined codeword is successful; and
based on the determining that the decoding of the second combined codeword is successful, sending an acknowledgement to the user equipment; or

if either the decoding of the second combined codeword is not successful or no additional multi-user detection outcomes are available, sending a negative acknowledgement to the user equipment.