Interference Signal Regeneration in Heterogeneous Networks
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Solution Overview
Problem
Current interference control schemes in multi-cell mobile communication systems face challenges such as significant data rate loss, difficulty in acquiring real-time channel information, and inefficient use of time/frequency resources, especially in heterogeneous network environments with varying base station structures and channel conditions.
Innovation Solution
The proposed solution involves an interference control method that considers time delay in interference channel feedback, allowing signal transmitting apparatuses to regenerate and transmit interference signals based on channel information fed back after a random time delay, enabling effective interference management in heterogeneous network-multi cell mobile communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time interference channel information is acquired for interference control, then interference cancellation performance is improved, but feedback overhead and system complexity increase significantly
Solution Approach 1:
The patent applies preliminary action by having the receiving apparatus pre-calculate and feed back interference channel information before actual interference cancellation is needed. The receiving apparatus calculates the interference channel between other transmitting apparatuses and itself, then feeds back this information to the interfering transmitting apparatus in advance, eliminating the need for real-time information acquisition during interference cancellation operations.
Solution Approach 2:
The patent uses copying by having the interfering transmitting apparatus regenerate the interference signal based on received feedback information. Instead of directly transmitting actual interference signals in real-time, the system creates a copy of the interference signal through regeneration using fed back channel information, which reduces feedback overhead while maintaining interference cancellation effectiveness.
2Productivity
If traditional interference control schemes are used, then implementation simplicity is maintained, but data rate loss increases significantly
Solution Approach 1:
The patent implements feedback by having the receiving apparatus feed back interference channel information to the transmitting apparatus. This feedback mechanism enables the transmitting apparatus to regenerate interference signals accurately, achieving better interference cancellation performance and higher data rates compared to traditional schemes without requiring complex real-time coordination between multiple apparatuses.
3Object-affected harmful factors
If time/frequency resources are divided for interference management, then interference impact is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The patent extracts the interference channel information from the main data transmission channel and handles it separately through dedicated feedback. By extracting interference management functions from the data transmission process, the system can manage interference without dividing time/frequency resources, thereby maintaining high resource utilization efficiency while effectively reducing interference impact.
Data Source
AI summary
The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). An operating method of a transmitting apparatus in a mobile communication system is provided. The method comprises regenerating a first interference signal for a receiving apparatus that a service is provided by at least one transmitting apparatus different from the transmitting apparatus at second time prior to first time; and transmitting the regenerated first interference signal at the first time.