Master Communication Apparatus Selecting Duplication Paths by Priority
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Solution Overview
Problem
The current fifth generation of mobile communication technology faces challenges in improving data transmission reliability for user equipment with multiple transmission paths without wasting system resources or increasing modulation and coding pressure at the lower layer of the communication protocol stack, particularly in scenarios requiring ultra-reliability and low latency, such as Industrial Internet of Things (IIoT), and struggles with resource allocation and conflict at the lower layer.
Innovation Solution
A master communication apparatus that selects a primary transmission path and duplication paths based on priority degrees and communication service status for different Quality of Service (QoS) degrees, configuring MAC and PDCP parameters to efficiently transmit packets through the primary and activated duplication paths, allowing for flexible activation and adoption of duplication paths to meet specific QoS requirements without using all allocated paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet duplication is applied to all transmission paths to improve reliability, then data transmission reliability is improved, but system resources are wasted
Solution Approach 1:
The patent applies different quality levels of packet duplication to different transmission paths based on their individual characteristics. Instead of uniformly duplicating packets across all paths, the system selectively duplicates packets only on paths that meet specific criteria (such as path priority, channel quality, or load conditions), thereby improving reliability where needed while conserving system resources on paths where duplication is unnecessary.
2Ease of operation
If configured grant is adopted for resource allocation, then resource allocation is simplified, but resources may be wasted when no packet needs transmission
Solution Approach 1:
The patent introduces dynamic resource allocation mechanisms that allow the system to transition between configured grant and dynamic grant modes based on real-time transmission needs. When packets require transmission, resources are activated; when no transmission is needed, resources are released or deactivated. This dynamic approach maintains the simplicity of configured grant while eliminating resource waste through conditional activation.
3Adaptability or versatility
If both configured grant and dynamic grant are adopted, then resource allocation flexibility is improved, but resource allocation conflicts occur
Solution Approach 1:
The patent segments the resource allocation space by dividing transmission paths into different categories or zones with distinct allocation rules. Configured grant resources and dynamic grant resources are allocated to different path segments or under different conditions, preventing conflicts by ensuring that the two allocation modes operate in separate or coordinated domains rather than competing for the same resources simultaneously.
4Reliability
If packet duplication is applied to meet ultra-reliability requirements, then data transmission reliability is improved, but modulation and coding pressure increases
Solution Approach 1:
The patent uses selective packet copying rather than universal duplication. Instead of creating multiple copies of every packet across all transmission paths, the system intelligently determines which packets require duplication based on their importance, the current state of transmission paths, and QoS requirements. This selective copying approach achieves ultra-reliability for critical data while minimizing the overall number of copies created, thereby reducing modulation and coding pressure.
Data Source
AI summary
A base station and a master communication apparatus are provided. The master communication apparatus belongs to a mobile communication system. The mobile communication system includes a plurality of data transmission apparatuses. Each of the data transmission apparatuses has a transmission path with a user equipment individually. Each transmission path has a priority degree. The master communication apparatus selects one of the transmission paths as the primary path. For each of a plurality of QoS degrees, the master communication apparatus selects a set of the transmission paths as at least one duplication path of the QoS degree according to the priority degrees and/or a plurality of communication service statuses. The master communication apparatus configures a MAC logic channel parameter and configures at least one PDCP parameter. The master communication apparatus transmits the MAC logic channel parameter and the at least one PDCP parameter to the user equipment.