Rate Matching for Overlapped Resources in NC-JT
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing resource allocation and data transmission between multiple base stations and user equipment, particularly in scenarios with overlapping time and frequency resources, leading to suboptimal resource utilization and increased latency.
Innovation Solution
A method is proposed where user equipment receives downlink control information from multiple base stations, allowing for differential rate matching and puncturing of Demodulation Reference Signals (DMRS) in overlapping and non-overlapping resource regions, enabling accurate resource allocation and CSI reporting to improve transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple base stations transmit data to user equipment using overlapping time and frequency resources, then transmission rate and spectral efficiency are improved, but resource allocation complexity and interference management difficulty increase
Solution Approach 1:
The resource allocation is segmented into multiple types (first type and second type) based on the overlap relationship between resource regions of different base stations. This segmentation allows the system to apply different rate matching and puncturing strategies to different resource types, simplifying the overall resource allocation management while enabling efficient use of overlapping resources for improved transmission rate.
Solution Approach 2:
Different rate matching and puncturing configurations are applied locally to different resource regions based on their specific overlap characteristics. The first resource region (where only first data is transmitted) and the second resource region (where both first and second data are transmitted) receive differentiated treatment, optimizing resource utilization in each local context while managing complexity.
2Reliability
If rate matching and puncturing are applied to DMRS in overlapping resource regions, then data loss is reduced and reliability is improved, but processing overhead and computational complexity increase
Solution Approach 1:
Rate matching and puncturing are applied selectively and partially to DMRS resources based on the specific overlap scenario. Rather than applying uniform complex processing to all DMRS, the system applies appropriate rate matching or puncturing only where needed in the overlapping resource regions, reducing unnecessary processing overhead while maintaining reliability.
3Productivity
If differential rate matching configurations are used for first and second resource regions, then resource utilization efficiency is improved, but configuration complexity and signaling overhead increase
Solution Approach 1:
The resource allocation is segmented into multiple types (first type and second type) based on the overlap relationship between resource regions of different base stations. This segmentation allows the system to apply different rate matching and puncturing strategies to different resource types, simplifying the overall resource allocation management while enabling efficient use of overlapping resources for improved transmission rate.
Solution Approach 2:
The patent establishes universal configuration patterns for rate matching and puncturing that can be applied across different base station pairs and resource scenarios. By defining standardized first and second resource region configurations, the system achieves differentiated resource utilization without requiring custom configurations for each specific case, reducing signaling overhead.
Data Source
AI summary
Disclosed are a method for transmitting and receiving data in a wireless communication system and an apparatus therefor. In specific, the method for transmitting and receiving data in a wireless communication system comprises the steps of: receiving first downlink control information (DCI) from a first base station and receiving second downlink control information (DCI) from a second base station; and, in a first resource region and a second resource region that are allocated on the basis of the first DCI, receiving first data from the first base station and, in the first resource region that is allocated on the basis of the second DCI, receiving second data from the second base station, wherein a rate matching of resources related to a demodulation reference signal (DMRS) may be set differently in each of the first resource region and the second resource region.