Terminal Device RRC Reconfiguration for Protocol Complexity Reduction
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Solution Overview
Problem
The complexity of communication protocols between E-UTRA and NR systems in 5G networks leads to inefficient communication between terminal devices and base station devices, due to differences in formats and functions, complicating protocol processing.
Innovation Solution
A terminal device and base station device system that processes RRC connection reconfiguration messages to perform release processes, including RLC entity re-establishment, PDCP entity release, logical channel release, and DRB identifier release, to simplify protocol processing and enhance communication efficiency in dual connectivity scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different communication protocols are used for E-UTRA and NR systems, then each system can maintain its own optimized performance, but protocol processing complexity increases and communication efficiency decreases
Solution Approach 1:
The patent merges the release process procedures for E-UTRA and NR systems into a unified approach. When the terminal device receives an RRC connection reconfiguration message indicating full configuration, it performs the same sequence of release operations (RLC entity re-establishment, PDCP entity release, logical channel release, DRB identifier release) regardless of whether the system is E-UTRA or NR, thereby reducing protocol processing complexity while maintaining system-specific performance characteristics
Solution Approach 2:
The patent creates a universal release process that can be applied across different radio access technologies (E-UTRA and NR). The terminal device uses a common procedure to handle DRB release in both systems, making the protocol processing multi-functional and applicable to multiple RATs without requiring separate complex procedures for each system
2Reliability
If separate release procedures are implemented for E-UTRA and NR systems, then system-specific requirements can be met, but communication efficiency decreases due to complicated protocol processing
Solution Approach 1:
The patent combines the release procedures into a single unified process that handles both E-UTRA and NR systems. The terminal device performs identical operations (RLC re-establishment, PDCP release, logical channel release, DRB identifier release) for both RATs when receiving full configuration indicators, eliminating the need for separate procedure implementations and thereby improving communication efficiency
Data Source
AI summary
The present disclosure provides a technology pertaining to a terminal device, a base station device, a method and an integrated circuit which can reduce the complexity of protocol processing and perform efficient communications. The terminal device includes: a receiving unit which receives an RRC connection reconfiguration message from the base station device; and a processing unit, wherein, when information for indicating that full configuration is applied is included in the RRC connection reconfiguration message, on the basis of the terminal device performing an E-UTRA/5GC or NGEN-DC, performs an RLC entity re-establishment, an NR PDCP entity release, an RLC entity release, a logical channel release, and a DRB identifier on a DRB which corresponds to each DRB identifier set by the terminal device release, and performs an SDAP entity notification, which corresponds to the DRB, of a release of the DRB.