Wireless Control Information Retransmission for Interference Reduction
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in coexisting and efficiently transmitting different types of services such as eMBB, URLLC, and mMTC simultaneously, as they require different resource allocation and have varying latency and reliability requirements, leading to potential interference and reduced performance when sharing frequency bands.
Innovation Solution
A method where a terminal receives downlink control information for scheduling retransmissions of code block groups, identifying whether earlier received code blocks are corrupted, and combining retransmitted code blocks with earlier received ones based on an indicator, allowing for adaptive redundancy version configuration to enhance data reception and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different services (eMBB, URLLC, mMTC) share frequency bands simultaneously, then resource utilization efficiency is improved, but interference between services increases and performance deteriorates
Solution Approach 1:
The patent segments the frequency band into different types (first type frequency band for eMBB, second type frequency band for URLLC, third type frequency band for mMTC) based on service requirements. This segmentation allows each service to operate in its designated frequency range, reducing mutual interference while maintaining high resource utilization efficiency through coordinated transmission across all bands.
2Reliability
If retransmission resources are allocated for corrupted code blocks, then data reception reliability is improved, but transmission latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring redundancy versions for code block groups before transmission. When corruption is detected, the receiver can immediately utilize the pre-prepared redundancy versions without waiting for retransmission scheduling, significantly reducing latency while maintaining reliability through forward error correction capabilities.
Solution Approach 2:
The patent dynamically adjusts the transmission strategy based on channel conditions and service requirements. For URLLC services, it prioritizes low-latency retransmission with pre-configured redundancy versions, while for eMBB services, it uses standard HARQ retransmission mechanisms, optimizing the balance between reliability and latency for each service type.
Data Source
AI summary
Disclosed are a communication technique for merging, with IoT technology, a 5G communication system supporting a data transmission rate higher than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and IoT-related technology. The present disclosure relates to a wireless communication system, and disclosed are a method and a device for performing retransmission when data for a first-type service is damaged by a second-type service data during transmission of the data for the first-type service in a communication system.