Early determination in high-speed shared control channel decoding

An apparatus for determining whether an encoded multi-part message in a channel is intended for a user equipment, the method comprising:

• at least one processor;
• a transceiver configured to receive at least the encoded multi-part message;
• a memory;
• and
• a bus coupled to the at least one processor, transceiver, and memory, wherein the at least one processor and memory are configured to:
• receive a codeword, wherein the codeword is a component of the encoded multi-part message;
• demask the received codeword based on an assigned identifier assigned to the communications device to provide a data sequence;
• demasking the received codeword based on re-encoding the data sequence to provide a detected identifier;
• and
• compare the detected identifier to the assigned identifier, wherein the communication device is determined to be the intended recipient of the encoded multi-part message when the detected identifier is equal to the assigned identifier.

A method of decoding an encoded multi-part message in a channel, the method comprising:

• choosing an initial value for an iterative identifier;
• iterating, until the value of the iterative identifier converges to within a predetermined threshold, including:
• deriving a mask from the iterative identifier,
• demasking a received codeword based on the derived mask to provide an iterative data sequence, wherein the received codeword is a component of the encoded multi-part message, and
• demasking the received codeword based on the iterative data sequence to provide an updated value for the iterative identifier, wherein the iterative data sequence is re-encoded;
• re-masking the iterative data sequence using the derived mask based on the iterative identifier and the re-encoded iterative data sequence at a point of convergence;
• and
• computing a correlation value between the re-masked iterative data sequence and the received codeword.

An apparatus for decoding an encoded multi-part message in a channel, the apparatus comprising:

• at least one processor;
• a transceiver configured to receive at least the encoded multi-part message;
• a memory;
• and
• a bus coupled to the at least one processor, transceiver, and memory, wherein the at least one processor and memory are configured to:
• choose an initial value for an iterative identifier;
• iterate, until the value of the iterative identifier converges to within a predetermined threshold, including:
• deriving a mask from the iterative identifier,
• demasking a received codeword message based on the derived mask to provide an iterative data sequence, wherein the receive codeword is a component of the encoded multi-part message, and
• demasking the received codeword and based on iterative data sequence to provide an updated value for the iterative identifier, wherein the initial or iterative data sequence is re-encoded;
• re-masking the iterative data sequence using the derived mask based on the iterative identifier and the re-encoded iterative data sequence at a point of convergence;
• and
• compute a correlation value between the re-masked iterative data sequence and the received codeword.