Scheduler for layer mapped code words

A radio base station that manages first and second radio cells including first and second user devices, respectively, wherein the radio base station schedules first and second code words corresponding to the first and second user devices, respectively, wherein the first code word includes a first identifier and a first code word number and the second code word includes a second identifier and a second code word number, the radio base station comprising:

• a command processor that receives first and second code block commands of the first and second code words, respectively, and outputs the first and second identifiers;
• a layer mapper that receives a plurality of code block commands and a plurality of control commands of the first code word, and a plurality code block commands and a plurality control commands of the second code word, and outputs the first and second code word numbers, wherein the layer mapper outputs the first code word number when a plurality of code block commands and a plurality of control commands of the first code word are received, processed, and stored in a mapped data storage, and outputs the second code word number when a plurality of code block commands and a plurality of control commands of the second code word are received, processed, and stored in the mapped data storage;
• a header memory that receives and stores a header of the first code word and a header of the second code word, wherein the header of the first code word includes the first code word number and the first identifier, and the header of the second code word includes the second code word number and the second identifier;
• and
• a scheduler connected to the command processor, the layer mapper, and the header memory, for scheduling the first and second code words, wherein the scheduler includes:
• a buffer memory that receives and stores the first and second identifiers from the command processor;
• a de-multiplexer that receives the first and second code word numbers from the layer mapper, and the first and second identifiers from the header memory, and outputs the first code word number based on the first identifier and the second code word number based on the second identifier;
• a set of completion queues including first and second completion queues corresponding to the first and second identifiers, respectively, connected to the de-multiplexer for receiving and storing the first and second code word numbers, wherein the first completion queue stores the first code word number, and the second completion queue stores the second code word number;
• a sequence controller connected to the buffer memory for receiving the first and second identifiers, wherein the sequence controller generates first and second select signals corresponding to the first and second identifiers, respectively;
• and
• a multiplexer connected to the sequence controller for receiving the first and second select signals, and to the set of completion queues for receiving the first and second code word numbers, wherein the multiplexer outputs one of the first and second code word numbers based on the first and second select signals, and wherein the scheduler schedules the first and second code words based on the one of the first and second identifiers.