Terminal RRC Connection Release via Registration Message
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Solution Overview
Problem
In LTE and 5G networks, many base stations do not configure inactivity timers, causing terminals to remain in the RRC_CONNECTED state and resulting in high power consumption due to the inability to initiate an RRC connection release process.
Innovation Solution
A method where the terminal actively releases the RRC connection by establishing a second RRC connection with the network, sending a registration message to indicate no service requirement, and synchronizing the RRC status, allowing the network to release the corresponding resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station does not configure an inactivity timer, then the terminal remains in the RRC_CONNECTED state continuously, but the power consumption of the terminal becomes very high
Solution Approach 1:
Instead of the base station actively controlling the connection release through inactivity timers, the patent inverts the approach by enabling the terminal to actively trigger and initiate the RRC connection release procedure itself. The terminal monitors its own service status and sends release indication information to the base station, thereby taking control of the connection state transition from the network side to the terminal side.
Solution Approach 2:
The terminal performs self-monitoring of service transmission status and autonomously decides when to release the RRC connection. By detecting that no service data is transmitted within a predetermined duration, the terminal independently triggers the release procedure without waiting for base station control, making the system more adaptive to terminal-specific needs.
2Extent of automation
If the terminal waits for the base station to send RRC connection release message, then the network controls the release process, but the terminal cannot proactively reduce power consumption
Solution Approach 1:
The terminal performs preliminary monitoring of service transmission status and proactively determines when release is needed before the base station would otherwise initiate the process. By detecting the absence of service data within a predetermined duration and initiating the release procedure in advance, the terminal avoids unnecessary power consumption while maintaining network coordination.
3Use of energy by moving object
If the terminal actively triggers RRC connection release, then power consumption is reduced, but the terminal must establish a second RRC connection for registration
Solution Approach 1:
The patent segments the RRC connection management into distinct phases: the first RRC connection handles data transmission, while the second RRC connection (established through registration procedure) handles the release indication and status synchronization. This segmentation allows the terminal to maintain data transmission capabilities while separately managing the release process, reducing overall system complexity.
Solution Approach 2:
The second RRC connection acts as an intermediary mechanism that facilitates the release process. By establishing this additional connection specifically for registration and status synchronization, the terminal can communicate its release intent to the base station without disrupting the primary data transmission connection, thereby simplifying the overall control logic.
Data Source
AI summary
In a method for releasing a Radio Resource Control (RRC), connection a first RRC connection between a terminal and a network device is used for data transmission between the terminal and the network device. The method terminal releases a local resource of the first RRC connection and establishes a second RRC connection to the network device when releasing the first RRC connection. The terminal sends a registration message to the network device through the second RRC connection, where the registration message registers with the network device and indicates that the terminal has no service requirement on the second RRC connection. The terminal receives a second RRC connection release request from the network device, and releases a local resource of the second RRC connection in response to the second RRC connection release request.