Reader and a method for controlling the reader

A method for controlling a user terminal communicating with a reader using Bluetooth Low Energy (BLE), comprising:

• obtaining a first advertising packet from the reader;
• performing a first authentication with the reader that has transmitted the first advertising packet;
• obtaining, by the user terminal that has obtained the first advertising packet, discovering service from the reader after the first authentication is performed;
• transmitting a first service data to the reader in response to the discovering service;
• obtaining discovering characteristic from the reader based on the first service data;
• and
• transmitting a first characteristic data to the reader in response to the discovering characteristic,
• wherein the reader performs a peripheral device role in Generic Access Profile (GAP) in a BLE protocol stack and the user terminal performs a central device role in the GAP, and
• wherein the reader performs a client role in Generic Attribute Profile (GATT) in the BLE protocol stack and the user terminal performs a server role in the GATT.

A reader for communicating with a user terminal using Bluetooth Low Energy (BLE), comprising:

• a communication unit;
• and
• a processor, wherein the processor configured to:
• transmit a first advertising packet to the user terminal;
• perform a first authentication with the user terminal that has received the first advertising packet;
• discover a service of the user terminal by the reader that has transmitted the first advertising packet after the first authentication is performed;
• obtain a first service data from the user terminal in response to the discovering service;
• discover characteristic of the user terminal based on the first service data;
• and
• obtain a first characteristic data from the user terminal in response to the discovering characteristic,
• wherein the reader performs a peripheral device role in Generic Access Profile (GAP) in a BLE protocol stack and the user terminal performs a central device role in the GAP, and
• wherein the reader performs a client role in Generic Attribute Profile (GATT) in the BLE protocol stack and the user terminal performs a server role in the GATT.