Method and apparatus for performing data access control of memory device with aid of predicted information

A memory controller of a memory device, the memory device comprising the memory controller and a non-volatile (NV) memory, the NV memory comprising at least one NV memory element, the memory controller comprising:

• a processing circuit, arranged to control the memory controller according to a plurality of host commands from a host device, to allow the host device to access the NV memory through the memory controller;
• and
• a transmission interface circuit, arranged to perform communications with the host device;
• wherein:
• the memory controller receives the plurality of host commands from the host device through the transmission interface circuit of the memory controller, for performing data access on the NV memory according to the plurality of host commands, wherein the data access comprises data reading;
• and
• the memory controller performs a reading parameter learning procedure to generate predicted data of a predicted reading voltage parameter offset regarding adjustment of a reading voltage parameter, for maintaining correctness of the data reading, wherein the reading parameter learning procedure comprises:
• scanning for a best value regarding the adjustment of the reading voltage parameter, and adding latest information comprising the best value into a data set among one or more data sets in at least one reading-voltage control database;
• performing local linear regression according to the data set to update a reading voltage prediction function corresponding to a reading voltage prediction model, for fitting a local curve of the predicted reading voltage parameter offset into a corresponding local trend of the data set;
• and
• generating or updating the predicted data of the predicted reading voltage parameter offset according to the reading voltage prediction function;
• wherein the reading parameter learning procedure is integrated into a read retry procedure, and the memory controller is arranged to perform both of read retry and reading parameter learning in the read retry procedure.