Abstract: A group host selection method for a device-to-device network and a control platform for selecting a group host are provided. The device-to-device network includes a user device and a gateway device, the group host selection method includes the steps of: calculating a signal reception capability corresponding to a transmission path from the gateway device to the user device; calculating a first computation capability of the gateway device; calculating a second computation capability of the user device; and selecting one of the user device and the gateway device to be a group host according to the signal reception capability and the first computation capability of the gateway device and the second computation capability of the user device.

Abstract: A control method, a network system and a control platform for mobile-edge computing (MEC) are provided. The control method can select at least one of relay gateways in the device-to-device relay network as a mobile-edge cloudlet for a user equipment. An application service program may be performed by the mobile-edge cloudlet, that the user equipment may receive a corresponding response with respect to an application service without accessing to a core network.

Abstract: A group host selection method for a device-to-device network and a control platform for selecting a group host are provided. The device-to-device network includes a user device and a gateway device, the group host selection method includes the steps of: calculating a signal reception capability corresponding to a transmission path from the gateway device to the user device; calculating a first computation capability of the gateway device; calculating a second computation capability of the user device; and selecting one of the user device and the gateway device to be a group host according to the signal reception capability and the first computation capability of the gateway device and the second computation capability of the user device.

Abstract: A control method, a network system and a control platform for mobile-edge computing (MEC) are provided. The control method can select at least one of relay gateways in the device-to-device relay network as a mobile-edge cloudlet for a user equipment. An application service program may be performed by the mobile-edge cloudlet, that the user equipment may receive a corresponding response with respect to an application service without accessing to a core network.

Abstract: A relay gateway device includes a processor and a storage, in which when a packet transmission is performed between a first mobile device and a second mobile device and the second mobile device switches from the relay gateway device to another, the IP address of the second mobile device changes from a former IP address to a current IP address. When the first mobile device transmits a first packet to the second mobile device in which the destination address of the first packet is the former IP address, the processor of the relay gateway device modifies the destination address of the first packet into the current IP address according to the former IP address and the current IP address of the second mobile device in a list of the storage and then transmits the first packet to the second mobile device, thereby achieving a seamless transmission during handover.

Abstract: A relay gateway device includes a processor and a storage, in which when a packet transmission is performed between a first mobile device and a second mobile device and the second mobile device switches from the relay gateway device to another, the IP address of the second mobile device changes from a former IP address to a current IP address. When the first mobile device transmits a first packet to the second mobile device in which the destination address of the first packet is the former IP address, the processor of the relay gateway device modifies the destination address of the first packet into the current IP address according to the former IP address and the current IP address of the second mobile device in a list of the storage and then transmits the first packet to the second mobile device, thereby achieving a seamless transmission during handover.