Base station interference elimination method and base station interference elimination device based on time slot

Abstract

The invention relates to a base station interference elimination method and a base station interference elimination device based on a time slot. The base station interference elimination method comprises steps that interference information of a base station is acquired, and the interference mode of the base station is determined; according to the interference mode, the protection symbol of the special time slot of the base station under interferences is adjusted. By improving the setting way of the protection time slot, a proportion among a downlink time slot, a protection time slot, and an uplink time slot of a special sub-frame is adjusted flexibly and automatically under consideration of both of an uplink capacity and a downlink capacity in atmospheric duct. The condition of the uplinksub-frame of the base station under the interferences is analyzed accurately, and the uplink business volume and the downlink business volume of a station are determined at the same time, the optimalproportion of the special sub-frame is calculated, and at the same time, adjustment of a special time slot of an interference source base station is additionally provided, and therefore interference effect under the atmospheric duct effect is eliminated more comprehensively, and user perception is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a time slot-based base station interference elimination method and device. Background technique [0002] This section introduces readers to background technologies that may be related to various aspects of the present invention, and it is believed that useful background information can be provided to readers, thereby helping readers to better understand various aspects of the present invention. Accordingly, it is to be understood that the descriptions in this section are for the purposes stated above and do not constitute admissions of prior art. [0003] When the eNodeB sends data to the UE, it takes a period of time for radio waves to travel from the eNodeB to the UE. Since the distance between each UE and the eNodeB is different, the UE that is closer to the eNodeB will receive the downlink signal first, and the UE that is farther away from the eNodeB will recei...

AI Technical Summary

Problems solved by technology

For example, base station A is configured according to the special subframe 10:2:2, and the guard slots of two OFDM symbols are calculated as 0.0714ms*3*10 8 The transmission protection distance of m / s=21.4km. Theoretically, the signal of the station beyond this protection distance has been attenuated to a very small level, and it is impossible to cause interference to the base station A. However, under the condition of the atmospheric duct effect produced by the special terrain and climate conditions, Electromagnetic waves can propagate over a long distance with low attenuation, and the transmission distance can even reach more than 300km

Therefore, in the case of the waveguide effect, due to the long transmission distance of other base stations, the signal delay is relatively large, and the signal delay is usually greater than the predetermined guard time slot. In the TD-LTE system, this phenomenon will cause remote base stations to Interference from local base stations

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