Retransmission Resource Segmentation in 5G Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, existing non-orthogonal multiple access technologies face challenges in distinguishing and processing initially-transmitted and retransmitted data, leading to conflicts and decreased decoding performance due to the lack of specific retransmission mechanisms, especially in contention-based transmission modes.
Innovation Solution
The proposed solution involves dividing resources into groups for initially-transmitted and retransmitted data, with specific mapping relations between these groups, allowing the network to distinguish and combine data correctly, and using random backoff mechanisms to reduce conflicts, enabling efficient retransmission and improved decoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-orthogonal multiple access technologies are used for contention-based transmission, then spectrum efficiency and system capacity are improved, but conflicts occur between initially-transmitted and retransmitted data making them indistinguishable
Solution Approach 1:
The patent segments the resource pool into distinct first resources for initial transmission and second resources for retransmission. This segmentation allows the base station and terminal to clearly distinguish between initially-transmitted data and retransmitted data, resolving the conflict that occurs when both types of data share the same resources in non-orthogonal multiple access systems.
Solution Approach 2:
The patent applies local quality by assigning different resource characteristics to initial transmission and retransmission. Specifically, initial transmissions use first resources while retransmissions use second resources, creating localized resource quality differences that enable reliable identification and processing of each data type despite using non-orthogonal multiple access.
2Productivity
If the same resources are used for both initial transmission and retransmission in non-orthogonal multiple access, then resource utilization is improved, but the base station cannot distinguish between initially-transmitted and retransmitted data
Solution Approach 1:
The patent divides the resource pool into separate first resources and second resources, with first resources allocated for initial transmission and second resources allocated for retransmission. This segmentation enables the base station to easily distinguish data types without increasing overall resource consumption, maintaining high resource utilization while simplifying data processing.
3Device complexity
If retransmission mechanisms are not specifically designed for non-orthogonal multiple access, then system simplicity is maintained, but decoding performance decreases due to conflicts between initial and retransmitted data
Solution Approach 1:
The patent implements a segmented resource allocation approach where first resources are dedicated to initial transmission and second resources are dedicated to retransmission. This simple yet effective segmentation resolves decoding conflicts without introducing complex retransmission mechanisms, maintaining system simplicity while significantly improving decoding performance.
Solution Approach 2:
The patent changes the resource parameter allocation by distinguishing between first resources for initial transmission and second resources for retransmission. This parameter change enables the system to resolve conflicts and improve decoding performance while keeping the overall system structure simple and manageable.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure relates to the retransmission in wireless communication system. A method of operating a base station comprises transmitting resource configuration information related to a resource for an initial transmission and a resource for a retransmission to a terminal, receiving initially-transmitted data through a first resource, and receiving retransmitted data through a second resource, if a decoding of the initially-transmitted data fails. The second resource is determined based on the first resource and the resource configuration information.