Sidelink Retransmission Resource Substitution in 5G
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in utilizing retransmission resources for sidelink user equipment (UE) in 5G networks, leading to potential resource wastage and the need for additional resource allocation requests, especially when uplink resources are required.
Innovation Solution
A method and device that allow a sidelink UE to receive a signal for allocating retransmission resources, retransmit sidelink signals using these resources, and transmit a usage rate to the base station, which then provides a resource replacement instruction to replace some retransmission resources with uplink resources, enabling efficient use without additional requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retransmission resources are periodically allocated to sidelink UE, then retransmission reliability is improved, but resource utilization efficiency deteriorates due to potential resource wastage
Solution Approach 1:
The transmitting UE reports the retransmission resource usage rate to the base station, creating a feedback loop that enables the base station to optimize resource allocation based on actual usage patterns, thereby improving resource utilization efficiency while maintaining retransmission reliability
Solution Approach 2:
The system dynamically adjusts resource allocation by allowing the base station to replace some retransmission resources with uplink resources based on the reported usage rate, making the resource allocation flexible and adaptive rather than static, thus improving overall resource efficiency
2Quantity of substance
If additional resource allocation requests are sent to the base station, then uplink resource availability is improved, but communication latency increases
Solution Approach 1:
The base station pre-allocates retransmission resources to the sidelink UE, and based on the usage rate feedback, proactively replaces some retransmission resources with uplink resources before additional requests are needed, eliminating the need for additional allocation requests and reducing latency
Solution Approach 2:
The system enables self-service by allowing the base station to automatically adjust resource allocation based on feedback from the UE, without requiring additional explicit requests from the UE for uplink resources, thus reducing communication overhead and latency
3Loss of energy
If retransmission resources are replaced with uplink resources, then resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The simple feedback mechanism where the UE reports only the usage rate to the base station keeps the UE complexity low, while the base station handles the complexity of resource replacement decisions, achieving a balanced distribution of complexity that improves resource utilization without significantly increasing overall system complexity
Data Source
AI summary
One embodiment relates to a method for performing an operation for a first terminal in a wireless communication system, comprising the steps of: receiving a signal for allocating a plurality of first retransmission resources from a base station; retransmitting a sidelink signal to a second terminal by using one or more first retransmission resources of the plurality of first retransmission resources; transmitting, to the base station, a retransmission resource use ratio, which is a ratio of one or more first retransmission resources to the plurality of first retransmission resources; and receiving, from the base station, a resource substitution instruction on the basis of the retransmission resource use ratio, wherein the resource substitution instruction instructs the substitution of an uplink resource for some of the plurality of second retransmission resources and use of same.