Communication scheme with operations to supplement limitations of portable terminal device

A radio portable terminal device, comprising:

• a radio communication unit for carrying out communications via a computer network or a telephone network through a radio base station by exchanging data packets;
• a local network communication unit for carrying out communications with another portable computer/device connected to a local network different from the computer network or the telephone network, the local network being a network locally defined for communications between the radio portable terminal device and said another portable computer/device;
• and
• a packet transfer processing unit for determining whether a specific processing of the data packets received from a correspondent device connected to the computer network or the telephone network by the radio communication unit is to be carried out using resources of the radio portable terminal device or not, according to an attribute of the data packets or data contained in the data packets, and transferring a part or whole of the data contained in the data packets to at least one of said another portable computer/device from the local network communication unit and another computer connected to the computer network from the radio communication unit such that the specific processing of the data packets determined not to be carried out using the resources of the radio portable terminal device is carried out at said at least one of said another portable computer/device and said another computer.