PDCP Duplication Activation via CBR Threshold Comparison
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Solution Overview
Problem
Existing technologies lack flexibility and accuracy in determining the activation of Packet Data Convergence Protocol (PDCP) duplication, which is crucial for ensuring transmission reliability, especially when the channel busy ratio (CBR) of a resource pool changes.
Innovation Solution
A communication method where a terminal device receives configuration information from a network device, including reliability information and CBR information, to determine whether to activate or deactivate PDCP duplication based on service-related information, ensuring more accurate and flexible control over PDCP duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional technology is used to determine PDCP duplication activation, then the system is simple to operate, but the determination is not sufficiently flexible and accurate
Solution Approach 1:
The patent applies parameter changes by introducing multiple dimensions of parameters (CBR thresholds, reliability requirements, service types) to determine PDCP duplication activation. The network device configures different CBR threshold pairs (first threshold, second threshold) and the terminal device compares current CBR values against these thresholds to dynamically adjust duplication activation status, achieving accurate determination through parameter comparison rather than complex algorithms.
Solution Approach 2:
The patent segments the determination process into distinct stages: configuration stage (network device provides threshold pairs and reliability requirements), measurement stage (terminal device measures CBR), comparison stage (CBR is compared against thresholds), and execution stage (duplication is activated or deactivated). This segmentation transforms a complex determination problem into a series of simple, manageable steps that improve accuracy without requiring overall system complexity.
2Reliability
If PDCP duplication is activated to ensure transmission reliability, then transmission reliability is improved, but resource consumption increases
Solution Approach 1:
The patent implements dynamic control of PDCP duplication activation based on real-time CBR measurements and pre-configured threshold pairs. When CBR is low (below first threshold), duplication is activated to ensure reliability. When CBR exceeds the second threshold, duplication is deactivated to conserve resources. Between thresholds, the status remains unchanged, avoiding unnecessary switching. This dynamic adaptation ensures reliability only when needed, optimizing resource consumption.
Solution Approach 2:
The system changes the operational parameter of PDCP duplication (activated/deactivated) based on CBR parameter variations. By configuring multiple CBR thresholds and comparing current CBR against these thresholds, the system dynamically adjusts duplication status to match channel conditions, achieving reliability improvement only when channel conditions warrant it, thus avoiding unnecessary resource consumption during good channel conditions.
3Adaptability or versatility
If the terminal device determines PDCP duplication activation based on CBR changes, then flexibility is improved, but the determination process becomes more complex
Solution Approach 1:
The network device performs preliminary action by pre-configuring multiple CBR threshold pairs and corresponding reliability requirements before the terminal device needs to make duplication decisions. The terminal device simply measures current CBR and compares it against these pre-provided thresholds, eliminating the need for complex real-time analysis. This preliminary configuration enables flexible adaptation to different service requirements while keeping the terminal device's determination process simple.
Solution Approach 2:
The system implements feedback by continuously measuring CBR and comparing it against pre-configured thresholds to determine duplication activation status. The terminal device provides feedback to the network device about CBR conditions, and the network device has already prepared appropriate threshold pairs and reliability requirements based on service types. This feedback mechanism enables flexible adaptation to changing channel conditions while maintaining simple determination logic through threshold comparison.
Data Source
AI summary
In an embodiment a communication method includes receiving, by a terminal device, configuration information sent by a network device, wherein the configuration information comprises reliability information and channel busy ratio (CBR) information, wherein the reliability information comprises information indicating a reliability scope or level, and wherein the CBR information comprises information indicating a CBR scope or level, and determining, by the terminal device, a packet data convergence protocol duplication (PDCP) duplication processing operation based on service-related information and the configuration information, wherein the service-related information comprises information related to a service corresponding to a PDCP entity, and wherein the processing operation comprises an activation operation or a deactivation operation.