Base Station Non-Orthogonal Multiplexing Interference Cancellation
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Solution Overview
Problem
Current LTE systems face challenges in providing low-latency and high-reliability communications due to interference between non-orthogonally multiplexed data from different users on shared resources, leading to reduced decoding success rates for both ultra-reliable and low-latency communications (URLLC) and enhanced mobile broadband (eMBB) services.
Innovation Solution
The solution involves a base station and terminal configuration where the terminal sends data on two resources using different configuration information, with a lower modulation order and transmit power on the second resource compared to the first resource, allowing for effective interference cancellation and improved decoding success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-orthogonal multiplexing is used to increase resource utilization, then resource efficiency is improved, but decoding success rate deteriorates due to interference between different users' data
Solution Approach 1:
The patent applies local quality by differentiating transmission parameters (modulation order and power) for different resources. Specifically, data transmitted on the second resource uses a lower modulation order and lower power compared to the first resource, creating localized quality adjustments that reduce interference impact on specific resource blocks while maintaining overall system efficiency
Solution Approach 2:
The patent changes transmission parameters (modulation order and power level) based on the resource being used. By adjusting these parameters for the second resource to be lower than for the first resource, the system optimizes the trade-off between resource utilization and decoding reliability, allowing non-orthogonal multiplexing to function effectively
2Productivity
If reserved resources are shared between eMBB and URLLC services, then resource utilization is improved, but transmission reliability deteriorates due to mutual interference
Solution Approach 1:
The patent applies local quality by assigning different transmission qualities to different services on the same resource. eMBB data transmitted on the second resource uses lower modulation order and power, creating a quality hierarchy that protects URLLC transmissions while allowing eMBB to utilize the same resources, thus resolving the reliability-utilization contradiction
Solution Approach 2:
The patent converts the harmful interference effect into a beneficial structure by intentionally designing the eMBB transmission on the second resource with lower power and modulation order. This controlled interference actually helps URLLC decoding while still allowing eMBB to utilize the reserved resources, transforming the conflict into a cooperative relationship
Data Source
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AI summary
Embodiments of this application provide a data processing method, a base station, and a terminal. The method includes: receiving, by a base station, first data from a first terminal on a first resource; receiving, by the base station, second data from the first terminal and third data from a second terminal on a second resource, where a modulation order of the second data is lower than a modulation order of the first data, and/or a code rate of the second data is less than a code rate of the first data, and/or a transmit power of the second data is less than a transmit power of the first data; demodulating and decoding, by the base station, the first data; and demodulating and decoding, by the base station, the second data and the third data. Therefore, the embodiments of this application can effectively improve decoding success rates of data that is of different users and that is transmitted on a same resource.