Dual-Connectivity Reconfiguration Without MAC Reset
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Solution Overview
Problem
In dual connectivity scenarios, terminal apparatuses need to constantly monitor multiple cell groups to enable low-latency high-capacity data communication, leading to significant power consumption.
Innovation Solution
Implement a terminal apparatus and base station apparatus with configurations for efficient radio resource control, allowing reconfiguration without resetting MAC and reestablishing RLC in secondary cell groups based on specific information values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal apparatus constantly monitors multiple cell groups to enable low-latency high-capacity data communication, then communication reliability and speed are improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the monitoring behavior adaptive rather than static. The terminal apparatus dynamically adjusts its monitoring activity based on the actual data transmission state. When data is being transmitted, the terminal maintains constant monitoring of multiple cell groups to ensure low-latency communication. When no data is transmitted, the terminal reduces or stops monitoring certain cell groups, thereby reducing power consumption. This dynamic adjustment resolves the contradiction between maintaining communication reliability and reducing power consumption.
2Productivity
If the terminal apparatus constantly monitors multiple cell groups, then data communication of large capacity with low delay is enabled, but power consumption increases
Solution Approach 1:
The patent applies partial action by having the terminal apparatus monitor only the necessary cell groups at any given time rather than all cell groups continuously. Specifically, the terminal monitors cell groups where data is actually being transmitted and ignores or reduces monitoring of cell groups where no data transmission is occurring. This partial monitoring approach maintains the required data communication capacity while significantly reducing the overall power consumption compared to constant monitoring of all cell groups.
3Device complexity
If the terminal apparatus performs reconfiguration with MAC reset and RLC reestablishment, then communication control is simplified, but processing time and power consumption increase
Solution Approach 1:
The patent applies local quality by making the reconfiguration approach dependent on the specific cell group and its current state. For the first cell group (primary cell group), the patent performs full reconfiguration with MAC reset and RLC reestablishment to ensure proper control. For the second cell group (secondary cell group), when the terminal is in a dormant state, the patent performs reconfiguration without MAC reset and without RLC reestablishment, thereby reducing processing time and power consumption. This localized differentiation in reconfiguration strategy resolves the contradiction between control simplicity and processing efficiency.
Data Source
AI summary
A terminal apparatus receives a first configuration and a second configuration that are applied to a second cell group and first information. The terminal apparatus performs reconfiguration using the first configuration in a case of receiving a first value as the first information. The terminal apparatus performs reconfiguration using the second configuration in a case of receiving a second value as the first information. The terminal apparatus does not reset MAC and reestablishes RLC in the second cell group in a case of performing reconfiguration based on the first information.