Wireless Carrier Reselection for Deactivated PDCP Duplication
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Solution Overview
Problem
In wireless communication systems, particularly in 3GPP LTE and 5G NR, there is no mechanism to release or reselect carriers when PDCP packet duplication is deactivated, leading to unnecessary resource reservation.
Innovation Solution
A method and apparatus for a wireless device to select a first carrier for a data unit and a second carrier for its duplication, and to trigger a carrier reselection procedure upon deactivation of the duplication, allowing for the release of resources used for duplicated PDCP packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If PDCP packet duplication is deactivated, then resource reservation is reduced, but currently there is no mechanism to release carriers leading to unnecessary resource reservation
Solution Approach 1:
The patent implements dynamic carrier management by linking carrier release to the activation state of PDCP packet duplication. When duplication is deactivated, the system dynamically releases the associated carrier, allowing the system to adapt its resource allocation to current transmission needs and avoid static resource reservation.
Solution Approach 2:
The patent enables the discarding of carriers when they are no longer needed for duplication transmission. By releasing carriers upon deactivation of PDCP packet duplication, the system recovers radio resources that can be reallocated to other uses, eliminating unnecessary resource reservation.
2Productivity
If carriers are released when duplication is deactivated, then resource management efficiency is improved, but system complexity increases
Solution Approach 1:
The patent integrates carrier release functionality into the existing PDCP packet duplication management framework. The same control mechanisms that manage duplication activation/deactivation are extended to also control carrier release, allowing a single system to perform multiple functions (duplication management and carrier management) without proportionally increasing complexity.
Solution Approach 2:
The system pre-establishes the relationship between PDCP packet duplication activation and carrier selection before operation begins. When duplication is deactivated, the carrier release is automatically triggered based on pre-configured associations, eliminating the need for complex real-time decision-making and reducing operational complexity.
Data Source
AI summary
A method and apparatus for triggering a transmission carrier reselection procedure for deactivated duplication in a wireless communication is provided. A wireless device selects a first carrier carrying a data unit, and selects a second carrier carrying a duplication of the data unit based on activation of the duplication of the data unit. The wireless device triggers a carrier reselection procedure based on deactivation of the duplication of the data unit.