Central Node Uplink Downlink Configuration for TDD Interference
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Solution Overview
Problem
The existing Time Division Duplex (TDD) communication systems face challenges in dynamically allocating uplink and downlink sub-frames, leading to inter-eNB and inter-UE interference, which degrades system performance and fails to accommodate dynamic service demands.
Innovation Solution
A central node device configures uplink-downlink configurations based on reference information from network node devices, optimizing sub-frame allocation by managing network node devices into clusters to minimize interference and adapt to real-time traffic and channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic allocation of uplink and downlink sub-frames is implemented, then system adaptability to real-time traffic demands is improved, but inter-eNB and inter-UE interference increases
Solution Approach 1:
The patent introduces a central node device as an intermediary that coordinates uplink-downlink configuration across multiple network node devices. This mediator collects traffic demand information from all nodes, determines optimal configurations, and distributes them to minimize interference while adapting to real-time demands. The central node acts as a mediator that resolves the conflict between dynamic adaptation and interference reduction by making centralized scheduling decisions.
Solution Approach 2:
The patent implements a feedback mechanism where network node devices report traffic demand information to the central node device, which then adjusts the uplink-downlink configuration based on this feedback. The system continuously monitors traffic conditions and dynamically reconfigures sub-frames in response to changing demands, while the central coordinator ensures interference is minimized through coordinated adjustments across all nodes.
2Reliability
If centralized configuration management is implemented, then interference coordination between network nodes is improved, but system complexity increases
Solution Approach 1:
The patent segments the network into a central node device that performs configuration management and network node devices that execute configurations. This segmentation separates the complex coordination function (centralized in one node) from the simpler execution function (distributed across multiple nodes). The central node handles the complexity of interference coordination, while individual network nodes maintain simpler operations, thus improving reliability without uniformly increasing complexity across the entire system.
3Adaptability or versatility
If frequent configuration changes are made to accommodate dynamic service demands, then system adaptability is improved, but system performance degradation due to ambiguity and reconfiguration overhead increases
Solution Approach 1:
The patent implements preliminary action by having the central node device collect traffic demand information and determine optimal uplink-downlink configurations in advance, before actual service demands arise. The system prepares configuration changes and coordinates them centrally, then implements them in a controlled manner across all network nodes. This preliminary planning reduces the need for frequent reactive changes, thereby maintaining adaptability while minimizing performance degradation from reconfiguration overhead and ambiguity.
Data Source
AI summary
Disclosed are an uplink-downlink configuration method and device in a system using a time division duplex communication mode, which relate to the technical field of wireless communications and are used for optimizing a configuration solution of an uplink/downlink subframe allocation manner. In the present invention, the method comprises: a central node device receiving reference information which is used for configuring an uplink-downlink configuration and sent by a transmission node device managed by the central node device; the central node device configuring the uplink-downlink configuration according to the received reference information; and the central node device sending the information about the configured uplink-downlink configuration to the corresponding transmission node device or to the corresponding transmission node device and a terminal. The configuration solution of the uplink-downlink configuration in the present invention is more optimized.