Method and Communication Device for Communicating with Other Devices

A method of communicating with another device, performed by a communication device including a Converged Personal Network Service (CPNS)-enabled entity, the method comprising:

• receiving, at the CPNS-enabled entity which is set in gateway mode, a discovery response message, comprising first information indicating whether the first device is set to be protected in an additional discovery procedure or not, from the first device, wherein the CPNS-enabled entity manages a first network, and wherein at least one Personal Network Entity (PNE) capable of receiving first service through the CPNS-enabled entity set in the gateway mode is present within the first network;
• receiving a discovery request message, comprising second information indicating mode of a second device, from the second device if the communication device has moved within a coverage of a second network managed by the second device;
• and
• determining whether to change mode of the CPNS-enabled entity based on at least one of whether or not there is an available PNE among the at least one PNE, the first information and the second information.

A communication device, comprising:

• a storage unit for storing a Converged Personal Network Service (CPNS)-enabled entity set in gateway mode, wherein the CPNS-enabled entity manages a first network, and wherein at least one Personal Network Entity (PNE) capable of receiving first service through the CPNS-enabled entity set as the gateway mode is present within the first network;
• a transceiver unit for:
• receiving a discovery response message, comprising first information indicating whether the first device is set to be protected in an additional discovery procedure or not, from the first device when the communication device is located within the first network;
• and
• receiving a discovery request message, comprising second information indicating mode of a second device, from the second device after the communication device has moved within a coverage of a second network managed by the second device;
• and
• a control unit for determining whether to change mode of the CPNS-enabled entity based at least one of whether or not there is an available PNE from among the one or more PNEs, the first information and the second information.