Communication Terminal Apparatus


Ontology type: sgo:Patent     


Patent Info

DATE

N/A

AUTHORS

MAKIDO, Satoshi K. K. TOYOTA CHUO KENKYUSHO , SUZUKI, Noriyoshi K. K. TOYOTA CHUO KENKYUSHO

ABSTRACT

A communication terminal apparatus subjects a frame repeated at a predetermined period with one or more of surrounding-terminals to time division by a plurality of slots and broadcasts data per slot units, the communication terminal apparatus including receiving means for receiving a packet transmitted from a surrounding-terminal, packet detecting means for detecting by which slot the packet received by the receiving means is received, demodulating means for demodulating the data from the received packet, frame information storing means for storing a plurality of pieces of frame information obtained by demodulating the received packet, frame information generating means for generating the frame information indicating "busy" when reception of the packet has succeeded and indicating "free" when the reception of the packet has failed for the respective slots based on a result detected by the packet detecting means, transmission slot selecting means for selecting the slot of transmitting the packet including the data to be transmitted based on the frame information from the surrounding-terminal stored by the frame information storing means and the frame information generated by the frame information generating means, and transmitting means for transmitting the packet at a timing of the transmission slot selected by the transmission slot selecting means, wherein the transmission slot selecting means changes the transmission slot when the transmission slot of the transmission slot selecting means itself receives "free" from the same surrounding-terminal continuously over a plurality of the frames. More... »

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