Channel detection method, terminal and base station

  • US 10,404,389 B2
  • Filed: 06/14/2017
  • Issued: 09/03/2019
  • Est. Priority Date: 12/19/2014
  • Status: Active Grant
First Claim
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1. A channel detection method applied when an LTE system works in an unlicensed frequency band, characterized in comprising:

  • determining a current sub-frame and a channel detection time when a data traffic arrives, wherein the channel detection time is set in at least one of the current sub-frame and a next adjacent sub-frame to perform channel state detection, and judging whether the terminal or base station that performs the channel state detection and other terminals or base stations concurrently performing data transmission with the terminal or base station that performs the channel state detection belong to a same telecommunication operator;

    if it is judged that the terminal or base station that performs the channel state detection and other terminals or base stations belong to a same telecommunication operator,subtracting a second power of the other terminals or base stations from a first power detected by said terminal or base station that performs the channel state detection so as to attain a third power, and comparing the third power with a first channel busy-idle threshold value in order to perform the channel state detection;

    orsetting a second channel busy-idle threshold value according to the distribution of all the base stations belonging to the same telecommunication operator, and comparing the power detected by the terminal or base station with the second channel busy-idle threshold value in order to perform the channel state detection, wherein the second channel busy-idle threshold value includes the power of the other terminals or base stations;

    andperforming data traffic transmission when it is detected that the channel is in an idle state.

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