Patent ID: 8036188

Claim:
A data transmitting method in a high-speed wireless personal area network (WPAN) that includes a parent piconet having a plurality of devices in communication with each other under control of a parent piconet coordinator, said parent piconet coordinator being selected as one of the plurality of devices contained solely in the parent piconet, and a child piconet having a plurality of devices in communication with each other under control of a child piconet coordinator, wherein one of the plurality of devices in both the child piconet and the parent piconet is designated as a first piconet coordinator that operates as a bridge device between the child piconet and the parent piconet, the bridge device broadcasting information about the devices of the parent piconet and information about devices of the child piconet among the devices included in the high-speed WPAN so that the respective devices store information regarding each of the other devices of the WPAN, and further operates to perform a data transfer between a first specified device included in the child piconet and a second specified device included in the parent piconet, the data transmitting method comprising the steps of: allocating, by the first piconet coordinator, the first specified device with a first channel time for a data transmission to the first piconet coordinator, transmitting data from the first specified device to the first piconet coordinator at the first channel time; checking, at the first piconet coordinator, header information of the transmitted data to determine whether a source piconet identifier included in the header coincides with a destination piconet identifier; buffering the transmitted data in the first piconet coordinator when the source piconet identifier included in the header fails to coincide with the destination piconet identifier; allocating, by the parent piconet coordinator, the first piconet coordinator with a second channel time for a data transmission; and transmitting the data from the first piconet coordinator directly to the second specified device, without passing through the parent piconet coordinator, at the second channel time.