Managing operations in memory systems

A method performed by a system comprising a memory device and a controller, wherein the method comprises:

• performing data transfer to the memory device for a first operation corresponding to a first command, wherein performing the data transfer to the memory device comprises transferring a plurality of allocation units of data;
• allocating, by the memory device, a first buffer space for the first operation;
• sending, by the controller, a second command to the memory device while performing the data transfer and that data transfer in a current allocation unit is completed;
• allocating, by the memory device, a buffer space for a second operation corresponding to the second command;
• performing, by the memory device, the second operation using the buffer space allocated for the second operation;
• and
• returning, by the memory device, an execution result of the second operation to the controller.

A memory device comprising:

• buffer spaces;
• an array of memory cells;
• and
• a microcontroller coupled to the buffer spaces and array of memory cells, wherein the microcontroller is configured to:
• while performing data reception for a first operation corresponding to a first command, receive a second command;
• perform a second operation using a buffer space of the buffer spaces, wherein the buffer space allocated for the second operation is different from that allocated for the first operation;
• and
• return an execution result of the second operation.