Combined TDD Configuration for NR UL Indication
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Solution Overview
Problem
Current 5G NR technology faces challenges in managing potential overlaps between uplink transmissions using different radio access technologies (RATs), leading to inefficiencies in resource allocation and transmission power management.
Innovation Solution
A method is introduced to determine a combined Time Division Duplex (TDD) configuration for User Equipment (UE) based on TDD configurations from multiple cells using the same RAT, allowing for dynamic power sharing and scheduling to avoid overlaps, thereby optimizing transmission power and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dynamic power sharing and scheduling is implemented to avoid overlaps between different RAT transmissions, then transmission power efficiency is improved, but device complexity increases due to the need to determine combined TDD configurations and coordinate between multiple base stations
Solution Approach 1:
The patent combines multiple TDD configurations from different cells using the same RAT into a single combined TDD configuration. This merging approach allows the UE to handle multiple RAT transmissions (e.g., LTE and NR) by referencing one unified configuration, thereby avoiding transmission overlaps and improving power efficiency without requiring the UE to independently manage multiple separate configurations for each RAT
Solution Approach 2:
The combined TDD configuration acts as an intermediary between the multiple base stations using different RATs. By establishing this intermediate configuration layer, the system enables coordination between base stations without requiring direct complex interactions, thus improving power management while limiting the increase in UE complexity
2Productivity
If combined TDD configuration is determined and shared between base stations, then resource allocation efficiency is improved, but network complexity increases due to additional signaling and coordination requirements
Solution Approach 1:
The combined TDD configuration serves multiple functions simultaneously: it acts as a scheduling reference for resource allocation, a coordination mechanism between base stations, and a power management guideline for the UE. This multi-functionality improves resource allocation efficiency across multiple RATs while avoiding the need for separate mechanisms for each function, thereby limiting the increase in network complexity
Solution Approach 2:
The combined TDD configuration is determined in advance before actual transmissions occur. By pre-establishing the configuration that accounts for potential overlaps between different RATs, the system enables efficient resource allocation during transmissions without requiring real-time complex calculations or negotiations between base stations
Data Source
AI summary
A base station apparatus communicates using a first Radio Access Technology (RAT). The apparatus determines a combined Time Division Duplex Uplink/Downlink (TDD UL/DL) configuration for a User Equipment (UE) based on a first TDD UL/DL configuration for a first cell using the first RAT and a second TDD UL/DL configuration for a second cell using the first RAT. The apparatus sends an indication of the combined TDD UL/DL configuration to at least one of the UE and a second base station that uses a second RAT to communicate with the UE.