Terminal-Centered Coverage Update for Asymmetric Uplink Downlink
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Solution Overview
Problem
Current radio access network configurations face challenges in providing optimal connectivity and efficient service to user equipment, particularly in environments with separate RRU and BBU setups, where uplink and downlink coverage need to be differentiated and adapted based on changing traffic characteristics and channel status.
Innovation Solution
A method involving the detection of uplink data transmission issues by user equipment, sending a notification to the BBU to reconfigure the RRC connection with a new RRU, and periodically measuring downlink signals to select the best RRU for optimal radio quality, allowing for asymmetric coverage and efficient resource distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional physical cell-based service providing unit is used, then the network structure is simple and easy to manage, but the network capacity and quality of experience are insufficient to meet future demands
Solution Approach 1:
The patent segments the service providing unit into two independent parts: a physical cell-based unit for coverage and a UE-centered zone-based unit for capacity enhancement. This segmentation allows the network to simultaneously maintain simple physical cell structures while introducing flexible zone-based service differentiation to increase overall network capacity and QoE.
Solution Approach 2:
The patent introduces a new dimension of service differentiation by creating UE-centered zones that operate independently from the traditional physical cell structure. This dimensional addition allows the network to provide enhanced capacity and QoE through zone-based services without fundamentally restructuring the existing physical cell architecture.
2Adaptability or versatility
If RRU and BBU are provided separately, then the network flexibility and adaptability are improved, but the connectivity optimization and service efficiency become more challenging
Solution Approach 1:
The patent implements feedback mechanisms where the network continuously monitors UE traffic characteristics and channel conditions, then dynamically adjusts uplink and downlink coverage configurations. This feedback loop ensures that the separated RRU and BBU components work together optimally, maintaining reliable connectivity while preserving network flexibility.
Solution Approach 2:
The patent introduces dynamic coverage configuration that adapts to changing traffic characteristics and channel conditions. The uplink and downlink coverages can be independently adjusted based on real-time network conditions, allowing the separated RRU and BBU components to maintain optimal connectivity despite their physical separation.
3Productivity
If symmetric coverage is used for uplink and downlink, then the configuration is simple, but the service efficiency for different traffic characteristics is reduced
Solution Approach 1:
The patent applies local quality by configuring uplink and downlink coverages differently based on specific traffic characteristics and channel conditions for each UE. This allows the network to optimize service efficiency for different traffic types (e.g., uplink-heavy video calls vs. downlink-heavy file downloads) without requiring complete reconfiguration of the entire network.
Solution Approach 2:
The patent introduces asymmetric coverage configuration where uplink and downlink coverages are independently optimized based on traffic characteristics. This asymmetry enables the network to achieve higher service efficiency by matching coverage parameters to actual traffic patterns, such as providing stronger uplink coverage for video uploads while maintaining standard downlink coverage.
4Adaptability or versatility
If the network does not update coverage dynamically, then the system operation is simple, but the adaptability to changing traffic characteristics and channel status is poor
Solution Approach 1:
The patent implements periodic coverage updates triggered by events such as traffic characteristic changes, channel condition variations, or UE mobility. This periodic action mechanism allows the network to maintain simplicity in normal operation while automatically adapting to changing conditions through scheduled or event-driven coverage reconfiguration.
Solution Approach 2:
The patent enables the network to automatically detect traffic characteristics and channel conditions, then self-adjust coverage configurations without manual intervention. This self-service capability maintains operational simplicity while achieving high adaptability to changing network conditions through automated decision-making algorithms.
Data Source
AI summary
Disclosed is a coverage setting method comprising detecting the generation of uplink data which is to be transmitted through uplink communication; transmitting an uplink data generation notification message for requesting an update of an uplink coverage to a BBU mapped to an RRU, if the uplink data is not capable of being transmitted by the RRU due to a state of the RRU being connected to a terminal, receiving, from the BBU, an RRC connection resetting message for indicating an addition of a connection with a new RRU for performing the uplink communication when it is determined that the uplink coverage of the terminal is to be updated by the BBU, and setting the connection with the new RRU to transmit the uplink data.