Terminal Apparatus Context Identifier Management for IIoT
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Solution Overview
Problem
Current technologies for Industrial Internet of Things (IIoT) using New Radio (NR) lack efficient mechanisms for controlling data transmission and reception, particularly in managing Ethernet headers and context identifiers.
Innovation Solution
A terminal apparatus and method that includes a receiver to handle RRC messages from a base station, processing units to manage context identifiers, timers, and context associations for efficient data transmission and reception, including creating, restarting, and deleting contexts based on message information and timer expiry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If Ethernet header compression is implemented by associating Ethernet header information with context identifiers, then data transmission overhead is reduced, but device complexity increases due to additional context management requirements
Solution Approach 1:
The patent applies preliminary action by pre-establishing context identifiers and their associated Ethernet header information in the terminal apparatus before actual data transmission occurs. When a data packet arrives, the terminal simply matches the packet against stored context identifiers rather than processing full Ethernet headers, thereby reducing transmission overhead while maintaining manageable complexity through advance preparation.
Solution Approach 2:
The patent uses copying by creating simplified representations of Ethernet header information stored as context identifiers. Instead of transmitting or processing complete Ethernet headers repeatedly, the terminal stores compressed context copies that reference the original header structures, reducing data overhead while allowing efficient retrieval and matching during communication operations.
2Productivity
If context identifiers are stored and managed in the terminal apparatus, then data transmission efficiency is improved, but the difficulty of detecting and measuring context state increases
Solution Approach 1:
The patent implements feedback mechanisms where the terminal apparatus continuously monitors the state of stored context identifiers and their associated data packets. When contexts expire, are updated, or are removed, the terminal provides feedback by updating its internal state tracking, allowing efficient context management while maintaining measurable and detectable context states through systematic state tracking and validation.
3Reliability
If timers are implemented to manage context validity, then data transmission reliability is improved, but device complexity increases due to additional timer management mechanisms
Solution Approach 1:
The patent applies periodic action by implementing timers that periodically check and validate the status of stored context identifiers. These timers operate at predetermined intervals to verify whether associated data packets are still valid, buffer space is available, and contexts should be maintained or removed. This periodic validation improves transmission reliability by ensuring context freshness while managing complexity through regular, predictable timing operations rather than continuous monitoring.
Data Source
AI summary
A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a receiver configured to receive, from the base station apparatus, an RRC message including an EHC configuration; and a processing unit. The processing unit configures an EHC protocol in accordance with the EHC configuration, and adds a context identifier to data in processing of the EHC protocol, and indicates, in a case that the context identifier is a particular value, that an Ethernet header of the data is uncompressed.