Adaptive Backhaul Signal Selection for Interference Coordination
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Solution Overview
Problem
Current wireless mobile communication systems face inefficiencies in backhaul transmission due to inadequate consideration of base station cooperation and backhaul capacity, leading to low transmission efficiency.
Innovation Solution
A method and system where a cooperative base station determines, based on signal strength thresholds, whether to transmit signals from served or interfering users to a serving base station, optimizing the type of backhaul signal to maximize backhaul capacity and efficiency by selecting appropriate signals for combination at baseband processing stages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If receive signals after quantization processing are transmitted through backhaul, then optimal performance of base station cooperation is achieved, but required backhaul capacity is relatively large
Solution Approach 1:
The patent applies dynamics by making the backhaul transmission strategy adaptive rather than fixed. The cooperative base station dynamically selects among different transmission modes (quantized receive signals, equalized estimation signals, decoded bit information, or soft bit information) based on real-time channel conditions, signal strength comparisons, and interference scenarios. This dynamic adaptation allows the system to optimize the balance between cooperation performance and backhaul capacity requirements根据不同场景灵活调整传输策略
Solution Approach 2:
The patent changes the parameter of signal processing stage by introducing multiple可选 transmission points at different baseband processing stages (quantization, equalization, decoding, soft demodulation). By changing which processing stage's output is transmitted over backhaul, the system can adjust the trade-off between performance and capacity requirements, selecting the appropriate parameter level based on current network conditions
2Quantity of substance
If decoded bit information is transmitted through backhaul, then required backhaul capacity is relatively small, but cooperation performance is reduced
Solution Approach 1:
The system dynamically adjusts the transmission strategy based on real-time conditions. When channel conditions are good or interference is low, it may opt for decoded bit information transmission to save backhaul capacity. When conditions deteriorate or interference increases, it switches to higher-quality signals (like quantized receive signals) to maintain performance, making the system adaptive to changing requirements
Solution Approach 2:
The patent applies partial action by selectively transmitting only the necessary signal information based on current needs. Instead of always transmitting the highest quality signals (which would consume excessive backhaul capacity), it transmits just enough information quality to achieve acceptable performance, using decoded bits when sufficient and higher-quality signals only when necessary
3Productivity
If coding technologies are utilized to perform compression coding on transmitted data, then backhaul transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent uses copying by transmitting processed signal representations (quantized signals, equalized estimates, decoded bits) that are copies or transformations of the original received signals. These copied forms can be more efficiently transmitted over backhaul while maintaining the essential information needed for interference coordination, reducing the need for complex real-time signal processing at the cooperative base station
Data Source
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AI summary
Embodiments of the present invention disclose a method and a base station for coordinating cell interference. The method includes: receiving each backhaul signal transmitted by each cooperative base station, where the backhaul signal is determined by the cooperative base station according to strength of a signal received from a served user and strength of a signal received by a serving base station from an interfering user in the cooperative base station; and combining, at different stages of baseband processing and according to a type of each backhaul signal, a backhaul signal of a corresponding type and a user signal received from each user. An embodiment of the present invention further provides a base station. According to the embodiments of the present invention, backhaul transmission capacity is maximally utilized, backhaul transmission efficiency is improved, and relatively high performance is obtained.