TDD Carrier Aggregation Scheduling for Half-Duplex Full-Duplex Interference
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Solution Overview
Problem
Current wireless communication systems using carrier aggregation and time division duplex (TDD) techniques face challenges in efficiently managing half-duplex and full-duplex operations, particularly when uplink and downlink subframes on different component carriers overlap, leading to interference and resource management issues.
Innovation Solution
The system determines whether a user equipment (UE) operates in half-duplex (HD) or full-duplex (FD) mode and schedules resources accordingly, using prioritization rules to manage overlapping subframes, allowing for simultaneous transmission and reception when possible, and implementing intelligent scheduling algorithms to avoid resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system allows full-duplex operations on different component carriers, then system throughput and resource utilization are improved, but interference between simultaneous transmission and reception occurs
Solution Approach 1:
The system segments the component carriers into different groups (first group and second group) with different uplink-downlink configurations. This segmentation allows the UE to perform full-duplex operations on different carriers while the base station can control and manage interference by assigning specific carriers for transmission and reception separately.
Solution Approach 2:
Different component carriers are assigned different local qualities or characteristics through their distinct uplink-downlink configurations. Each carrier group has specific subframes designated for uplink or downlink, allowing the system to optimize each carrier's local transmission characteristics while maintaining overall full-duplex capability.
2Adaptability or versatility
If the system implements half-duplex operation for UEs with architectural limitations, then device compatibility is improved, but resource utilization and system throughput deteriorate
Solution Approach 1:
The system implements a universal carrier aggregation framework that can accommodate both half-duplex and full-duplex UEs. The base station schedules resources differently based on UE capability - half-duplex UEs receive restricted scheduling while full-duplex UEs receive optimized scheduling that utilizes both uplink and downlink simultaneously, making the system universally compatible with different device types.
Solution Approach 2:
The scheduling mechanism is dynamic and adapts to each UE's capabilities. The base station can switch between half-duplex scheduling mode and full-duplex scheduling mode depending on the UE type, optimizing resource utilization for each device while maintaining overall system efficiency.
3Productivity
If the system schedules overlapping uplink and downlink subframes on different component carriers, then resource efficiency is improved, but complexity of managing half-duplex and full-duplex operations increases
Solution Approach 1:
The system implements partial scheduling optimization by applying full-duplex scheduling only to carriers where it is beneficial and feasible. The base station can selectively enable overlapping subframe scheduling on specific carrier groups while maintaining traditional scheduling on others, reducing the overall complexity while still achieving resource efficiency gains where applicable.
Data Source
AI summary
Aspects of the present disclosure relate to methods for communicating using TDD and carrier aggregation.