| 摘要 |
A method for transmitting data between multihop-distanced devices in a WPAN(Wireless Personal Area Network) is provided to achieve multi-hop data transmission through a multi-hop ARP(Address Resolution Protocol) cache in a WPAN environment. The first PNC(Piconet Coordinator) allocates CTA(Channel Time Allocation)1 to the first device so as to transmit data to the second PNC. Also the first PNC allocates CTA2 so that the second PNC can transmit data. The second PNC allocates CTA1' within the range of the allocated CTA2 so as to transmit data to the third PNC. Also the second PNC allocates CTA2' within the range of the allocated CTA2 so that the third PNC can transmit data to the second device. If CTA1 comes after CTA assignment, the first device transmits desired data to the second PNC. The second PNC, receiving the data, transmits the data to the third PNC if CTA1' comes. The third PNC, receiving the data, transmits the data at a time of CTA2 .
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