A Judgment Method and Judgment Device for Channel Occupancy

Abstract

The embodiment of the present invention discloses a method and device for judging channel occupancy. The method includes: screening qualified small cells to the first set according to the geographical location of the small cells and the idle channel detection results; screening qualified small cells according to the interference between small cells The small cells in the second set are divided into the second set, otherwise they are divided into the third set; according to the priority and geographical location of the small cells, the small cells in the second set are divided into an active set and a suppression set; sending transmission control signaling to the third set, The small cells in the active set and the suppressed set make the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and the small cells in the suppressed set occupy the channel after receiving the transmission control signaling The period enters the non-sending state. By adopting the present invention, the rationality of channel resource allocation in the small cell system and when the LAA system and Wi-Fi system coexist can be improved, and the system performance can be improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for judging channel occupancy. Background technique [0002] With the popularity of Long Term Evolution (LTE) technology, wireless data traffic has achieved a blowout growth, and the demand for spectrum resources of cellular data systems is also increasing. The 3GPP Release 13 standard proposes the concept of License Assisted Access (LAA) small cell (Small Cell). Small Cell is not only deployed in the existing licensed spectrum, but also deployed in the unlicensed spectrum, which can make full use of the spectrum resource. However, the coexistence of LAA and Wireless-Fidelity (Wi-Fi) in the unlicensed 5GHz frequency band has become the biggest challenge. [0003] In order to avoid collisions, carrier sense (Listen-before-talk, LBT) is applied to the LAA system in the prior art. LBT includes load based equipment (Load Based Equipment, LBE) and frame b...

AI Technical Summary

Problems solved by technology

To solve the problem that when the LAA system and the Wi-Fi system coexist, there are many conflicts and collisions, which lead to serious interference between cells and the deterioration of system performance

At the same time, it solves the problem of serious interference and further deterioration of system performance due to simultaneous transmission of all small cells when deploying ultra-dense networking on the licensed spectrum

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