Bitmap Field Command for PDCP Duplication Transmission Control
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Solution Overview
Problem
Current communication technologies face challenges in effectively activating or deactivating duplication transmission of packet data convergence protocol (PDCP) entities in user equipment (UE) connected to multiple network devices, leading to mismatched configurations and inefficient resource utilization.
Innovation Solution
A method and apparatus using a bitmap field to transmit commands for activating or deactivating duplication transmission of PDCP entities or radio bearers in UE, ensuring consistent configuration across multiple network devices through configuration request and notification messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If duplication transmission is activated to improve reliability, then data transmission reliability is improved, but radio resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic switching between duplication transmission mode and split transmission mode based on real-time radio link quality assessment. The network device monitors link conditions and dynamically configures the PDCP entity to use duplication transmission only when reliability is critical, otherwise using split transmission to conserve resources. This dynamic adaptation resolves the contradiction by making the system flexible rather than static.
2Adaptability or versatility
If multiple network devices independently configure duplication transmission, then configuration flexibility is improved, but configuration consistency deteriorates
Solution Approach 1:
The patent establishes a feedback mechanism where network devices exchange configuration information through inter-device communication. When one network device configures duplication transmission for a PDCP entity, this configuration state is fed back to other connected network devices, ensuring all devices have consistent understanding of the current transmission mode. This feedback loop maintains configuration consistency while preserving the flexibility of independent configuration decisions.
3Reliability
If duplication transmission is used instead of split transmission, then transmission reliability is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent changes the operational parameters of the PDCP entity by switching between two distinct transmission modes: duplication transmission (high reliability, low efficiency) and split transmission (lower reliability, high efficiency). The system adjusts this parameter based on service requirements and radio conditions, using duplication transmission only when absolutely necessary for reliability-critical services, thereby optimizing the balance between reliability and resource efficiency.
Data Source
AI summary
A terminal apparatus includes a receiver configured to receive a command for activating or deactivating one or more duplication transmission by using a bitmap field, each the one or more duplication transmission corresponding to each of one or more packet data convergence protocol (PDCP) entities or each of one or more radio bearers, and a processor circuitry configured to control to activate or deactivate the one or more duplication transmission according to the command, and wherein one bit or a plurality of bits in the bitmap field correspond(s) to one of the PDCP entities or the radio bearers, an i-th bit or an i-th pair of bits in the bitmap field correspond(s) to an i-th packet data convergence protocol entity in the PDCP entities.