Flexible PDCP Duplication and Serving Cell Control
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Solution Overview
Problem
Current mechanisms for controlling the activation and deactivation of PDCP duplication and serving cell restrictions in wireless communications are inflexible, tied to specific serving cells, limiting data transmission options when PDCP duplication is activated or deactivated.
Innovation Solution
An access control method in user equipment that receives configuration information and media access control elements to determine and manage the activation/deactivation of PDCP duplication and serving cell restrictions, allowing flexible use of serving cells based on indication information, enabling or disabling serving cell usage accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDCP duplication is activated with serving cell restrictions, then data transmission reliability is improved through diverse paths, but data transmission flexibility deteriorates due to limited serving cell options
Solution Approach 1:
The patent introduces dynamic control mechanisms that allow the network to flexibly activate or deactivate serving cell restrictions based on current transmission needs. When PDCP duplication is activated, the system can dynamically switch between restricted and unrestricted serving cell modes, enabling adaptation to changing channel conditions and traffic requirements while maintaining both reliability and flexibility.
Solution Approach 2:
The patent changes the parameter of serving cell restriction status from fixed to variable. By introducing indication information that can dynamically adjust the restriction state, the system allows PDCP duplication to operate with flexible serving cell selection, transforming the static parameter into a dynamic one that can be optimized for both reliability and adaptability.
2Adaptability or versatility
If PDCP duplication is deactivated without serving cell restrictions, then data transmission flexibility is improved by allowing all serving cells, but data transmission reliability deteriorates due to lack of path diversity
Solution Approach 1:
The patent implements dynamic control where the network can switch between restricted and unrestricted serving cell modes based on real-time conditions. This dynamic mechanism ensures that when PDCP duplication is deactivated, the system can still maintain reliability by selectively applying serving cell restrictions when needed, while preserving flexibility when conditions allow.
Solution Approach 2:
The patent transforms the static parameter of serving cell restriction into a dynamic one through indication information. This allows the system to adjust the restriction parameter based on whether PDCP duplication is active, ensuring that reliability is maintained through appropriate parameter settings while preserving transmission flexibility when conditions permit.
3Ease of operation
If serving cell restrictions are always applied to logical channels, then data transmission control is improved through precise path management, but device complexity increases due to additional configuration and management overhead
Solution Approach 1:
The patent extracts the serving cell restriction control from the PDCP duplication configuration and places it in a separate, independently controllable indication information structure. This separation allows the restriction control to be managed independently, reducing the complexity of configuration management while maintaining precise path control capabilities.
Solution Approach 2:
The patent creates a universal indication information mechanism that can be applied to multiple logical channels and DRBs simultaneously. This multi-functional approach allows a single control structure to manage serving cell restrictions across different channels, reducing overall configuration complexity while maintaining precise control over data transmission paths.
4Productivity
If serving cell restrictions are not applied when PDCP duplication is deactivated, then data transmission efficiency is improved through increased serving cell options, but configuration precision deteriorates due to loss of path specificity
Solution Approach 1:
The patent implements dynamic control where serving cell restrictions are applied or removed based on the operational state of PDCP duplication. This dynamic mechanism ensures that configuration precision is maintained when needed (when duplication is active) while allowing transmission efficiency to improve when conditions permit (when duplication is deactivated), optimizing both parameters according to real-time requirements.
Solution Approach 2:
The patent changes the serving cell restriction parameter dynamically based on PDCP duplication status. When duplication is deactivated, the parameter is adjusted to allow broader serving cell options for efficiency, while when duplication is active, the parameter is set to maintain precise path control. This parameter transformation optimizes both transmission efficiency and configuration precision according to operational context.
Data Source
AI summary
Provided by the present disclosure are an access control method in a user equipment and the user equipment, which may flexibly control the activation and deactivation of PDCP duplication and the activation and deactivation of a serving cell restriction. The access control method comprises: receiving configuration information related to a data radio bearer (DRB); receiving a media access control element (MAC CE) indicating the activation/deactivation of a packet data convergence protocol layer (PDCP) duplication function of the DRB; when the MAC CE indicates the deactivation of the PDCP duplication function, determining whether the configuration information comprises indication information, the indication information indicating a restriction relationship between a logical channel associated with the DRB and a serving cell which is allowed to be used; and determining a serving cell used for the logical channel according to the result of the determination.