Judgment method of channel occupancy and judgment device

A judgment device of channel occupancy, comprising:

• a clustering unit configured to cluster according to geographic position information of small cells on a same frequency band, each of the small cells being a small cell working in a licensed frequency spectrum or a LAA cell working in an unlicensed spectrum;
• a first dividing unit, configured to divide small cells in a cluster into a first set when all of the small cells are small cells working in the licensed frequency spectrum, or execute a clear channel assessment (CCA) on LAA cells in the cluster periodically and synchronously when all of the small cells are small cells working in the unlicensed frequency spectrum, and divide LAA cells whose channels are detected to be idle into the first set;
• a calculation unit configured to calculate an interference value between every two small cells in the first set and compare with a preset interference threshold value, and divide a small cell combination having an interference value larger than the preset interference threshold value into a second set, or divide a small cell combination having an interference value equaling to or small than the preset interference threshold value into a third set;
• a second dividing unit configured to receive priority information reported by each of small cells in the second set, and divide the small cells in the second set into an active set and a restrained set according to the priority information and the geographic position information of each of the small cells;
• a sending unit configured to send transmission control signaling to small cells in the third set, the active set and the restrained set, to make the small cells in the third set and the small cells in the active set start transmitting data after receiving the transmission control signaling, and to make the small cells in the restrained set enter a non-sending state within a channel occupation period after receiving the transmission control signaling.

A terminal, comprising:

• a processor;
• and
• a memory storing a plurality of instructions, which when executed by the processor, causes the processor to:
• cluster according to geographic position information of small cells on a same frequency band, each of the small cells being a small cell working in a licensed frequency spectrum or a LAA cell working in an unlicensed spectrum;
• when all of the small cells are small cells working in the licensed frequency spectrum, divide the small cells in a cluster into a first set, or when all of the small cells are small cells working in the unlicensed frequency spectrum, after executing a clear channel assessment (CCA) on LAA cells in the cluster periodically and synchronously, divide LAA cells whose channels are detected to be idle into the first set;
• calculate an interference value between every two small cells in the first set and comparing with a preset interference threshold value, and divide a small cell combination having an interference value larger than the preset interference threshold value into a second set, or divide a small cell combination having an interference value equaling to or small than the preset interference threshold value into a third set;
• receive priority information reported by each of small cells in the second set, and divide the small cells in the second set into an active set and a restrained set according to the priority information and the geographic position information of each of the small cells;
• send transmission control signaling to small cells in the third set, the active set and the restrained set, to make the small cells in the third set and the small cells in the active set start transmitting data after receiving the transmission control signaling, and to make the small cells in the restrained set enter a non-sending state within a channel occupation period after receiving the transmission control signaling.