Memory systems and operating methods thereof, electronic systems

A system, comprising:

• a host configured to send read commands;
• and
• a memory system coupled to the host and comprising:
• a memory device;
• and
• a controller coupled to the memory device and configured to:
• receive, from the host, a read command;
• access a corresponding region of the memory device according to the read command;
• update hotness information of the corresponding region in a hotness table, wherein the hotness information comprises a number of times a region of the memory device is accessed by read commands from the host;
• determine one or more active regions based on the hotness information of regions in the hotness table;
• and
• send, to the host, mapping information corresponding to the one or more active regions, wherein the mapping information comprises a mapping relationship from logical address to physical address;
• wherein the host is configured to receive the mapping information corresponding to the one or more active regions.

A method of operating a memory system comprising a memory device and a controller coupled to the memory device, the method comprises:

• receiving, from a host, a read command;
• accessing a corresponding region of the memory device according to the read command;
• updating hotness information of the corresponding region in a hotness table, wherein the hotness information comprises a number of times a region of the memory device is accessed by read commands from the host;
• determining one or more active regions based on the hotness information of regions in the hotness table;
• and
• sending, to the host, mapping information corresponding to the one or more active regions, wherein the mapping information comprises a mapping relationship from logical address to physical address.