Distributed Antenna System Floor Identification Using Pseudo Timing Advance
Solution Overview
Problem
In large-scale buildings, distributed antenna systems (DAS) struggle to accurately measure user traffic distribution across multiple floors, leading to inefficient network operation and degraded user experience due to traffic concentration, as current systems cannot analyze and adjust resources effectively floor-by-floor.
Innovation Solution
A method and apparatus that determine pseudo timing advance (TA) values for each location, allowing base stations to calculate UE positions and configure communication resources based on user traffic and number, enabling targeted resource allocation and traffic measurement across floors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a DAS is used to provide coverage in large-scale buildings, then coverage area is improved, but measurement precision of user traffic distribution deteriorates
Solution Approach 1:
The patent segments the coverage area into multiple floors and assigns different pseudo TA values to each floor. By dividing the large-scale building coverage into smaller spatial segments (floors), the system can measure and analyze user traffic distribution per floor, thereby resolving the measurement precision issue while maintaining overall coverage area.
Solution Approach 2:
The patent introduces pseudo TA values as an intermediary parameter to enable floor identification. These pseudo TA values act as mediators that allow the base station to determine which floor a UE is located on, enabling traffic measurement per floor without requiring physical presence at each location.
2Device complexity
If one cell provides service to multiple floors, then device complexity is reduced, but loss of information about traffic distribution increases
Solution Approach 1:
The patent applies local quality by assigning different pseudo TA values to different floors (local areas) while maintaining a single cell configuration. This allows the system to preserve simple network architecture while enabling differentiated traffic measurement and analysis for each floor, preventing information loss about traffic distribution.
Solution Approach 2:
The patent changes the TA parameter locally for different floors by assigning different pseudo TA values. This parameter change enables the base station to identify user locations on different floors and measure traffic distribution, thereby preventing information loss while maintaining simple device configuration.
3Productivity
If traffic concentration occurs at specific floors, then productivity is improved in those areas, but reliability of overall network performance deteriorates
Solution Approach 1:
The patent implements feedback by measuring and analyzing user traffic distribution per floor using pseudo TA values. This feedback mechanism enables the network operator to identify traffic concentration patterns and take corrective actions (such as adding capacity or redistributing load), thereby maintaining overall network reliability while allowing local productivity improvements.
Data Source
AI summary
A system and method are provided to efficiently provide coverage within a large scale of a building by identifying user equipment (UE) on a floor by floor basis using a distributed antenna system (DAS) and pseudo timing advance values (TA) assigned to each floor. By applying different pseudo delays on a plurality of distributed antenna basis located at each floor, a base station can know a floor at which a user equipment is located through a timing advance value of the user equipment. When a traffic amount increases based on the measured traffic amount of each floor, the base station may increase a carrier and adjust an amplifier output on a floor by floor basis, thereby efficiently using power and maintaining a user's quality of experience (QoE).