Multiple network connection method and communication device thereof

A method for multiple network connection, the method comprising:

• transmitting, by a second device to a first device, capability information of the second device;
• receiving, by the second device from the first device, a registration complete message indicating that the second device is registered to a network;
• and
• receiving, by the second device, a service according to a service control by the first device,
• wherein a first connection path and a second connection path are established using the capability information,
• wherein the first connection path is established between the network and the second device through the first device, and the first connection path is used for conveying control information for the service,
• wherein the second connection path is established between the network and the second device not through the first device, and the second connection path is used for conveying user data for the service, and
• wherein the first device and the second device are included in a personal area network (PAN), the PAN provides direct communication between the first device and the second device.

A first device comprising:

• a communication module;
• and
• a control module;
• wherein the control module is configured to:
• receive, from a second device, capability information of the second device,
• transmit, to the second device, a registration complete message indicating that the second device is registered to a network, and
• perform a service control for providing a service for the second device,
• wherein a first connection path and a second connection path are established using the capability information,
• wherein the first connection path is established between the network and the second device through the first device, and the first connection path is used for conveying control information for the service,
• wherein the second connection path is established between the network and the second device not through the first device, and the second connection path is used for conveying user data for the service, and
• wherein the first device and the second device are included in a personal area network (PAN), the PAN provides direct communication between the first device and the second device.

A second device comprising:

• a communication module;
• and
• a control module;
• wherein the control module is configured to:
• transmit, to a first device, capability information of the second device,
• receive, from the first device, a registration complete message indicating that the second device is registered to a network, and
• receive a service according to a service control by the first device,
• wherein a first connection path and a second connection path are established using the capability information,
• wherein the first connection path is established between the network and the second device through the first device, and the first connection path is used for conveying control information for the service,
• wherein the second connection path is established between the network and the second device not through the first device, and the second connection path is used for conveying user data for the service, and
• wherein the first device and the second device are included in a personal area network (PAN), the PAN provides direct communication between the first device and the second device.