Scheme for communication and transmitting discovery signal in mobile communication system

A second communication device in a communication system, the second communication device comprising:

• at least one processor configured to:
• transmit a request for long-range communication support information to a first communication device through a short-range communication link,
• receive the long-range communication support information from the first communication device, and
• access to an internet using the long-range communication support information received from the first communication device;
• and
• a communication unit configured to communicate data through the short-range communication link under the control of the at least one processor,
• wherein the long-range communication support information includes cellular network access information,
• wherein the cellular network access information includes a security parameter of the first communication device and at least one of an identifier of the first communication device or radio configuration information of the first communication device, and
• wherein the security parameter includes information on a security key or information on a counter used in scrambling or descrambling.

A method for communicating by a first communication device in a communication system, the method comprising:

• receiving a request for long-range communication support information from a second communication device through a short-range communication link;
• transmitting the long-range communication support information to the second communication device;
• and
• relaying an access from the second communication device to an internet, using the long-range communication support information transmitted to the first communication device,
• wherein the long-range communication support information includes cellular network access information, and
• wherein the cellular network access information includes a security parameter of the first communication device and at least one of an identifier of the first communication device or radio configuration information of the first communication device, and
• wherein the security parameter includes information on a security key or information on a counter used in scrambling or descrambling.

A first communication device in a communication system, the first communication device comprising:

• at least one processor configured to:
• receive a request for long-range communication support information from a second communication device through a short-range communication link,
• transmit the long-range communication support information to the second communication device, and
• relay an access from the second communication device to an internet, using the long-range communication support information transmitted to the first communication device;
• and
• a communication unit configured to communicate data through the short-range communication link under the control of the at least one processor,
• wherein the long-range communication support information includes cellular network access information,
• wherein the cellular network access information includes a security parameter of the first communication device and at least one of an identifier of the first communication device or radio configuration information of the first communication device, and
• wherein the security parameter includes information on a security key or information on a counter used in scrambling or descrambling.