Method, base station and system for automatically selecting frequency spectrums

Abstract

The invention relates to a method, a base station and a system for automatically selecting frequency spectrums. The method comprises the following steps of: acquiring carrier selection guidance information issued by a macro base station through a home base station; measuring downlink signals of the macro base station, and estimating interference level IeNB (Interference at evolved NodeB) of the macro base station on the home base station on each component of carrier and potential IOTC on the macro base station, caused by the home base station, according to measurement results; and selecting available carriers from free frequency spectrums of a frequency spectrum resource pool according to MTIOT, IeNB, IOTC and preset CCT of the home base station for transmitting signals. According to the method, the base station and the system, network nodes can acquire self interference environment in real time by introducing estimation on the maximal tolerable interference margin to both the macro base station side and the home base station side and sharing evaluation results among different nodes, and the guidance to the carrier selection of the home base station by the macro base station is realized at the same time, so that the adaptive capability of the home base station to the environment changes is improved, and the network robustness is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method, base station and system for automatic frequency spectrum selection in an LTE-ADVANCED system. Background technique [0002] With the continuous development of wireless communication technology, the integration of wireless network and Internet has become the mainstream trend of communication development. The integration of traditional cellular communication network and computer network, which is mainly based on circuit switching services, proposes new data transmission capabilities for wireless communication systems. challenges and needs. Therefore, in order to continuously meet the demand for continuous improvement of wireless access, the LTE (Long Term Evolution, long-term evolution) system came into being. Through the introduction of new key technologies and the improvement of network management capabilities, substantial progress has been made in data...

AI Technical Summary

Problems solved by technology

[0010] Due to the arbitrariness of eHNB installation and the dynamic characteristics of placement, the traditional pre-planning technology for macro base stations cannot be applied to cascaded networks for interference and resource coordination, and cannot meet the adaptive requirements of home base stations for environmental changes

Images