Communication service in communication modes

1. An electronic device comprising:

a first communication unit configured to establish a first communication link;

a second communication unit configured to establish a second communication link and a third communication link, wherein the second communication unit consumes more power than the first communication unit; and

at least one processor configured to:

control the first communication unit to broadcast a first advertising packet comprising an identifier of the electronic device and communication service information,

control the first communication unit to receive an advertising packet response from an external electronic device located near the electronic device, wherein the external electronic device comprises another first communication unit and another second communication unit,

control the second communication unit to establish a second communication link with the another second communication unit of the external electronic device, and

control the first communication unit to establish the first communication link with the another first communication unit of the external electronic device, the second communication unit to switch from the second communication link to a third communication link in response to a request for changing a communication method,

wherein the third communication link uses a different communication method from that of the second communication link, and

wherein the first communication unit maintains the first communication link during the switching.

2. The electronic device of claim 1 , wherein the at least one processor is further configured to control the first communication unit to negotiate with the external electronic device for establishing the second communication link.

3. The electronic device of claim 2 , wherein a channel for the negotiating is a secure communication link established between the external electronic device and the electronic device.

4. The electronic device of claim 1 , wherein the first advertising packet comprises radio communication capability data associated with the electronic device, and the advertising packet response comprises radio communication capability data associated with the external electronic device based on the first advertising packet.

5. The electronic device of claim 4 , wherein the first advertising packet further comprises information on dual mode for establishing the first communication link by the first communication unit during the switching.

6. The electronic device of claim 1 , wherein the first advertising packet comprises a field associated with the first, second and third communication link and a Medium Access Control (MAC) address field based on the first, second and third communication link.

7. The electronic device of claim 1 , wherein the at least one processor is further configured to control the first communication unit to maintain a communication service using the first communication link.

8. The electronic device of claim 7 , wherein the at least one processor is further configured to control the second communication unit to recover the second communication link using the first communication link.

9. The electronic device of claim 1 , wherein the first communication unit comprises one of a sound wave communication module and a Bluetooth Low Energy (BLE) module, and the second communication unit comprises one of a wireless fidelity (Wi-Fi) module, and a Wi-Fi Direct module.

10. The electronic device of claim 1 , wherein the first advertising packet comprises a service identifier field and a service state field indicating a state of a communication service.

11. The electronic device of claim 1 , wherein the first advertising packet comprises a company identifier indicating at least one of a manufacturer of the electronic device and a communication service provider, the company identifier being used for determining which devices can receive the first advertising packet.

12. The electronic device of claim 1 , wherein the first advertising packet further comprises a transmission power information for use in calculating pathloss along with Receiver Signal Strength Indicator (RSSI) of the first advertising packet which is measured by the external electronic device.

13. A communication service method comprising:

broadcasting, by a first communication unit of an electronic device, a first advertising packet comprising an identifier of the electronic device and communication service information;

receiving, by the first communication unit of the electronic device, an advertising packet response from an external electronic device located near the electronic device, wherein the external electronic device comprises another first communication unit and another second communication unit;

establishing, by a second communication unit of the electronic device, a second communication link with the another second communication unit of the external electronic device, wherein the second communication unit of the electronic device is configured to consume more power than the first communication unit;

establishing, by the first communication unit of the electronic device, a first communication link with the another first communication unit of the external electronic device in response to a request for changing a communication method;

switching, by the second communication unit of the electronic device, from the second communication link to a third communication link, and

maintaining, by the first communication unit of the electronic device, the third communication link with the external electronic device during the switching,

wherein the third communication link uses a different communication method from that of the second communication link.

14. The method of claim 13 , wherein establishing the second communication link comprises negotiating, by the first communication unit of the electronic device, with the external electronic device.

15. The method of claim 13 , wherein the first advertising packet comprises a field associated with the first, second and third communication link and a Medium Access Control (MAC) address field based on the first, second and third communication link.