Master Base Station Split Bearer Uplink Control
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Solution Overview
Problem
The dual connectivity scheme in mobile communication systems has not been effectively applied to uplink data transmission, limiting throughput improvements.
Innovation Solution
A communication control method is introduced where a master base station divides a mobile station's bearer into two split bearers, one without and one with the intervention of a secondary base station, allowing the mobile station to transmit uplink data to either base station based on control information and resource assignment, and prioritizing data transmission through the MAC layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the dual connectivity scheme is applied to downlink data transmission only, then the system maintains simple uplink control structure, but uplink throughput improvement is limited
Solution Approach 1:
The patent segments the uplink data transmission path by dividing the bearer into two split bearers: one without secondary base station intervention and another with secondary base station intervention. This segmentation allows selective application of dual connectivity to specific data flows, improving uplink throughput while maintaining manageable control complexity through structured data routing
Solution Approach 2:
The master base station acts as an intermediary that coordinates between the mobile station and secondary base station for split bearer transmission. It manages the control information and resource assignment that directs uplink data to appropriate base stations, enabling dual connectivity benefits while centralizing control functions to prevent system complexity from escalating
2Productivity
If all uplink data is transmitted through the master base station, then control management is simplified, but resource utilization and throughput are reduced
Solution Approach 1:
The patent implements dynamic data routing where the mobile station transmits uplink data to different base stations based on real-time control information and resource assignment. The system dynamically selects transmission paths (direct to master base station or via secondary base station) optimized for current network conditions, improving data transmission efficiency while maintaining controlled complexity through standardized routing protocols
Solution Approach 2:
Different transmission paths are assigned different qualities and purposes: the direct path to master base station handles control-sensitive traffic, while the path through secondary base station handles data-intensive traffic. This local quality differentiation optimizes overall system performance by matching transmission characteristics to traffic requirements
3Productivity
If the mobile station transmits uplink data to both master and secondary base stations, then throughput is improved, but coordination complexity increases
Solution Approach 1:
The patent merges the control functions for both transmission paths into the master base station, which generates and manages control information for split bearer transmission. This consolidation allows throughput improvement through dual-path transmission while maintaining ease of operation by centralizing coordination responsibilities in a single base station that manages both direct and indirect data paths
Data Source
AI summary
A master base station according to embodiment divides a bearer of a mobile station into two split bearers in a dual connectivity scheme. One split bearer is provided between the master base station and the mobile station without intervention of a secondary base station. Another split bearer is provided between the master base station and the mobile station with the intervention of a secondary base station. The master base station comprises a transmitter configured to transmit to the mobile station, information indicating whether the mobile station should transmit uplink data to the master station or to the secondary base station.