Direct DU Interfaces for Real-Time Dynamic Spectrum Sharing
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving real-time dynamic spectrum sharing due to limited procedures and information elements, leading to time delays and difficulties in interworking between base stations with different core networks.
Innovation Solution
Implementing a direct interface between distributed units (DUs) for real-time dynamic spectrum sharing (DSS) through signaling and information exchange, including identification information on cells, to facilitate efficient spectrum sharing between base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing procedures and information elements are used for spectrum sharing, then base stations can exchange spectrum sharing information, but time delays occur and real-time dynamic spectrum sharing cannot be achieved
Solution Approach 1:
The patent segments the base station into multiple distributed units (DUs) that can independently exchange spectrum sharing information through direct interfaces. This segmentation allows parallel information exchange between multiple DUs, reducing the overall time delay compared to centralized processing, and enables real-time dynamic spectrum sharing decisions.
Solution Approach 2:
The patent establishes pre-configured direct interfaces between distributed units before spectrum sharing operations begin. These pre-established communication channels eliminate the need for dynamic channel setup during spectrum sharing, reducing initialization time delays and enabling immediate real-time spectrum allocation adjustments.
2Productivity
If direct interface between distributed units is implemented, then real-time dynamic spectrum sharing is enabled, but device complexity increases
Solution Approach 1:
The patent designs the direct interface between distributed units with universal functionality that handles multiple types of spectrum sharing information exchange (identification information, resource allocation, status updates) through a single standardized protocol. This multi-functional interface reduces the need for multiple specialized communication channels, thereby limiting the increase in device complexity while maintaining high spectrum sharing speed.
3Reliability
If identification information on cells is exchanged between distributed units, then spectrum sharing coordination is improved, but information processing complexity increases
Solution Approach 1:
The patent extracts and prioritizes only the essential identification information elements (such as cell IDs and frequency band identifiers) that are critical for spectrum sharing coordination, excluding redundant data. This selective extraction of key information elements improves coordination reliability by focusing on essential identifiers while limiting information processing complexity by reducing the volume of data to be handled.
Data Source
AI summary
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as long term evolution (LTE). A method performed by a distributed unit (DU) in a wireless communication system is provided. The method may include transmitting, to another node supporting a second cell that shares a frequency band of a specified range with a first cell of the base station, a message including information related to spectrum sharing via a DU interface, wherein the information related to the spectrum sharing includes identification information on the first cell and identification information on the second cell.