Periodic Uplink Downlink Resource Management in 5G
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently managing periodic uplink and downlink resources, particularly in reducing latency and optimizing resource utilization due to limited radio resources and increasing data demands in new radio communication technologies.
Innovation Solution
A method and apparatus for a user equipment (UE) in a wireless communication system that involves receiving periodic resource configuration, activating uplink and downlink periodic resources, transmitting uplink data, and monitoring downlink assignments, with options for DRX configuration and resource deactivation based on command, to optimize resource usage and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If periodic uplink and downlink resources are continuously allocated to ensure low latency, then latency is reduced, but radio resource utilization efficiency deteriorates due to limited resources being reserved even when not needed
Solution Approach 1:
The patent implements dynamic resource allocation where periodic uplink and downlink resources are allocated only when needed. The network device determines whether to allocate resources based on data arrival status, and the terminal device activates or deactivates resources based on reception of activation commands. This dynamic approach allows the system to maintain low latency when data is present while improving resource utilization efficiency when data is absent, resolving the contradiction between continuous allocation and efficient resource use.
2Adaptability or versatility
If multiple downlink periodic resources are configured for different purposes, then adaptability is improved, but device complexity increases due to multiple configurations and activation commands
Solution Approach 1:
The patent implements a self-service mechanism where the terminal device automatically determines whether to activate periodic downlink resources based on whether it has uplink data to transmit. When the terminal has uplink data, it autonomously activates the corresponding periodic downlink resources without requiring explicit activation commands from the network. This reduces configuration management complexity while maintaining the adaptability to allocate resources as needed for different communication scenarios.
Data Source
AI summary
A method for performing operations of a User Equipment (UE) in a wireless communication system is disclosed. The method comprises steps of receiving periodic resource configuration including uplink periodic resources and first downlink periodic resources related to the uplink periodic resources; activating both the uplink periodic resources and the first downlink periodic resources based on receiving an activation command for the uplink periodic resources; transmitting uplink data on an uplink resource of the uplink periodic resources; and monitoring downlink assignment on the first downlink periodic resources.