Application Layer Measurement Reporting in RRC Resumption
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Solution Overview
Problem
In the 5G mobile wireless communication system, there is a need for efficient application layer measurement reporting, particularly during RRC connection resumption, to support higher data rates and lower latency, while managing radio bearers and segmentation effectively.
Innovation Solution
The method involves receiving specific IE messages to establish SRB1 and SRB4, configuring application layer measurement reporting based on configuration information, and performing segmentation of RRC messages to enable efficient reporting across different RRC states, including RRC_INACTIVE, using SRB0, SRB1, SRB2, and SRB4 for different types of messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If application layer measurement reporting is performed during RRC connection resumption, then measurement accuracy and data transmission efficiency are improved, but protocol complexity and processing overhead increase
Solution Approach 1:
The patent segments the RRC message into multiple parts: a first RRC message containing configuration information for application layer measurement reporting, and a second RRC message containing actual measurement report data. This segmentation allows the terminal to establish necessary radio bearers (SRB1 and SRB4) before transmitting measurement reports, improving measurement accuracy while managing protocol complexity through structured message division.
2Productivity
If SRB4 is established for application layer measurement reporting, then data transmission efficiency is improved, but radio bearer management complexity increases
Solution Approach 1:
The patent applies preliminary action by establishing SRB1 and SRB4 radio bearers before the terminal actually needs to transmit application layer measurement reports. The terminal receives configuration information in a first RRC message, establishes the necessary bearers in advance, and then can efficiently transmit measurement data in subsequent messages. This preliminary setup improves data transmission efficiency while managing complexity through proactive resource allocation.
3Productivity
If RRC messages are segmented for application layer measurement reporting, then message processing efficiency is improved, but message handling complexity increases
Solution Approach 1:
The patent segments RRC messages into a first RRC message containing configuration information and a second RRC message containing measurement report data. This segmentation allows the terminal to process configuration setup separately from actual data transmission, improving message processing efficiency. The structured division of message functions reduces handling complexity by clearly separating setup-phase operations from data-phase operations.
4Speed
If application layer measurement reporting is enabled in RRC_INACTIVE state, then network responsiveness is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring measurement reporting parameters and establishing necessary radio bearers (SRB1 and SRB4) before the terminal transitions to RRC_INACTIVE state. When the terminal needs to resume connection, the configuration information is already in place, allowing rapid resumption without immediate high-power measurement operations. This reduces network responsiveness delays while minimizing power consumption during the inactive state.
Data Source
AI summary
A Method and Apparatus for application layer measurement reporting upon RRC connection resumption is provided. The method includes receiving a first SRB-ToAddMod IE, establishing a SRB1 based on the first SRB-ToAddMod IE, receiving a second SRB-ToAddMod IE, establishing a SRB4 based on the second SRB-ToAddMod IE, receiving a first RRC message comprising a first configuration information, receiving in RRC_INACTIVE a second RRC message and performing application layer measurement reporting based on presence and absence of the first configuration information.