Base Station Interference Cancellation via Channel Information Exchange
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Solution Overview
Problem
In wireless communication systems employing flexible duplex mode, cross-link interference occurs between neighboring base stations using different uplink-downlink time configurations, which affects communication quality and capacity.
Innovation Solution
An electronic device for each base station processes channel information to divide the interference channel and provides processed channel information to the neighboring base station, enabling interference cancellation during downlink transmission and uplink reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible duplex mode is employed to adapt resource allocation to service characteristics, then spectrum utilization and system performance are improved, but cross-link interference occurs between neighboring base stations using different uplink-downlink time configurations
Solution Approach 1:
The patent converts the harmful cross-link interference into a beneficial effect by having the interfering base station (second base station) transmit channel information that enables the interfered base station (first base station) to calculate and cancel the interference. The harmful interference signal becomes the basis for generating cancellation signals, transforming the problem into a solution.
Solution Approach 2:
The patent introduces channel information as an intermediary element between the two base stations. The second base station transmits channel information about its downlink transmission to the first base station, which then uses this information to calculate interference cancellation signals. This intermediary information exchange enables coordinated interference management without requiring direct interference measurement between base stations.
2Productivity
If neighboring base stations use different uplink-downlink time configurations, then service characteristics are better met, but interference cancellation becomes necessary and complex
Solution Approach 1:
The patent segments the interference cancellation process into distinct functional parts: the second base station transmits channel information, the first base station receives and processes this information to calculate interference signals, and then applies cancellation. This segmentation allows each base station to perform a specific function, simplifying the overall complexity while enabling interference cancellation.
Solution Approach 2:
The patent implements preliminary action by having the second base station transmit channel information before the interference occurs or at a time when the first base station can process it for cancellation. This advance provision of channel information enables the first base station to prepare interference cancellation signals in advance, reducing the real-time processing burden during actual interference scenarios.
Data Source
AI summary
The present disclosure relates to an electronic device, a method, and a storage medium for a wireless communication system. Various embodiments regarding interference cancellation are described. In one embodiment, an electronic device for a first base station includes a processing circuit, and the processing circuit is configured to: obtain channel information of a channel from a second base station to the first base station; process the channel information to divide the channel; and provide at least portion of processed channel information to the second base station, where at least one of the first base station or the second base station cancels, based on the at least portion of the processed channel information, interference caused from downlink transmission of the second base station to uplink reception of the first base station.