DAS Delay Signaling for Dynamic O-RAN Antenna Configuration
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Solution Overview
Problem
Existing distributed antenna systems (DAS) are not considered in Open-Radio Access Network (O-RAN) standards, leading to inefficient communication operations and unnecessary resource waste due to non-optimal antenna delay settings that do not account for varying installation environments and product characteristics.
Innovation Solution
The proposed method involves exchanging delay information between DAS nodes and O-RAN base stations to adjust cell size dynamically, using identification and registration information to determine optimal antenna delay values based on the specific installation conditions of each DAS node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed antenna delay values are used in O-RAN base stations, then communication setup is simplified, but communication efficiency deteriorates due to non-optimal settings that do not account for varying DAS installation environments
Solution Approach 1:
The patent implements dynamic antenna delay adjustment by having the O-RAN base station receive delay information from the DAS head-end unit and configure the ORU accordingly. This allows the system to transition from fixed to dynamic delay values, optimizing communication efficiency for different DAS installation environments while maintaining operational simplicity through automated information exchange.
Solution Approach 2:
The patent establishes a feedback mechanism where the DAS head-end unit provides delay information to the O-RAN base station, which then configures the ORU with the appropriate antenna delay values. This closed-loop feedback system enables continuous optimization of communication performance based on actual DAS installation characteristics.
2Device complexity
If antenna delay is not optimized for specific DAS installation environments, then system configuration is simplified, but resource waste increases due to non-optimal settings
Solution Approach 1:
The patent changes the antenna delay parameter dynamically based on DAS installation environment. The O-RAN base station receives delay information from the DAS head-end unit and adjusts the antenna delay value accordingly, optimizing resource utilization for different installation scenarios while maintaining configuration simplicity through automated parameter adjustment.
3Productivity
If delay information exchange between DAS and O-RAN base station is implemented, then communication performance improves, but system complexity increases
Solution Approach 1:
The patent implements a universal information exchange mechanism where the DAS head-end unit provides delay information to the O-RAN base station, which then configures the ORU. This multi-functional approach optimizes communication performance across different DAS installation environments through a standardized information exchange protocol, managing system complexity through universality.
Data Source
AI summary
A method performed by a first distributed antenna system (DAS) node unit in a communication system including a DAS includes: measuring information related to a delay of at least one second DAS node unit connected to the first DAS node unit; generating delay information for the at least one second DAS node unit based on the information related to the delay; and transmitting the delay information to an open-radio access network (O-RAN) node unit of a base station to which the DAS is connected.