DRB Data Duplication Control via Segmented Bitmaps
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Solution Overview
Problem
In dual-connectivity scenarios of new radio (NR) communications, user equipment (UE) faces challenges in identifying and processing control information from master and secondary nodes to efficiently manage data radio bearers (DRBs) for data duplication and transmission, leading to inefficiencies in processing.
Innovation Solution
A method where the UE determines, based on control information received from master and secondary nodes, whether to open or close data duplication and transmission functions of DRBs using bitmap formats, with specific bit settings indicating the status of each DRB, allowing for efficient processing by correlating bit positions with DRB identification information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both master node and secondary node send control information for DRB data duplication control, then comprehensive control capability is improved, but UE processing complexity increases
Solution Approach 1:
The control information from master node and secondary node is segmented into separate MAC CEs, each with distinct bitmap formats. The UE processes these segmented control information pieces separately rather than as a unified complex structure, reducing processing complexity while maintaining comprehensive control capability.
Solution Approach 2:
Bitmap fields serve as intermediaries between the control nodes (master/secondary) and the UE. The bitmaps encode DRB control states in a standardized format that the UE can efficiently parse and process, acting as a mediator that simplifies the interaction between multiple control sources and the UE.
2Measurement precision
If multiple MAC CEs are used to control different DRBs, then control precision is improved, but information identification difficulty increases
Solution Approach 1:
Each MAC CE is designed with local quality - specific bitmap fields are allocated to control specific DRBs or groups of DRBs. This localized control approach allows the UE to identify and process only the relevant control information for each DRB, reducing the overall identification difficulty while maintaining precise control.
Solution Approach 2:
Different bitmap formats and field configurations act as distinct 'colors' or identifiers for different control purposes. The UE can quickly identify the type and target of each MAC CE by examining its bitmap structure, similar to how color coding helps identify different categories of information, thereby reducing identification difficulty.
Data Source
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AI summary
Disclosed are a data duplication transmission control method, user equipment (UE), node, and computer storage medium, said method comprising: receiving first control information sent by a primary node, and/or receiving second control information sent by a secondary node; on the basis of an instruction of a first part data radio bearer (DRB) corresponding to said first control information, and/or on the basis of an instruction of a second part DRB corresponding to said second control information, determining to turn on or off the data duplication transmission function of at least one DRB.