Terminal Device Power Saving Mode in Inactive State
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Solution Overview
Problem
Current communication systems lack an effective method to further reduce power consumption of terminal devices in inactive states, particularly in 5G systems, where terminal devices in inactive states cannot transmit data and require context recovery for data transmission, leading to inefficiencies.
Innovation Solution
A method where terminal devices and access network devices exchange configuration information to determine whether to enter a power saving mode within an inactive state, with the terminal device disabling its radio frequency module, allowing for reduced power consumption by enabling or disabling power saving modes based on received instructions or preset conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device enters inactive state in 5G system, then data transmission capability is maintained through context storage, but power consumption cannot be further reduced
Solution Approach 1:
The patent introduces a dynamic power saving mode within the inactive state that allows the terminal device to flexibly adjust its operational characteristics. The device can transition between different power consumption levels while maintaining the inactive state context, enabling adaptive power management based on actual needs rather than fixed power consumption patterns.
Solution Approach 2:
The patent changes the power consumption parameter by introducing a power saving mode that modifies the operational parameters of the terminal device. By adjusting parameters such as radio frequency module operation, timing advance values, and random access configuration, the device achieves lower power consumption while remaining in inactive state with preserved context.
2Speed
If the terminal device keeps radio frequency module on in inactive state, then data transmission can be quickly resumed, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring timing advance values and random access parameters before the terminal device enters power saving mode. This allows the device to quickly resume data transmission without needing to re-establish these parameters from scratch, thereby reducing the speed penalty associated with turning off the radio frequency module while still achieving significant power savings.
3Use of energy by moving object
If the terminal device enters power saving mode with radio frequency module off, then power consumption is reduced, but network configuration and management becomes more complex
Solution Approach 1:
The patent implements feedback mechanisms where the terminal device reports its power saving mode status and relevant parameters to the network. The network can then adjust configurations based on this feedback, creating a closed-loop system that manages the complexity of power saving mode operation. This feedback approach allows the network to optimize configurations dynamically rather than requiring complex static configurations.
Data Source
AI summary
The embodiments of the disclosure relate a method for determining a state of a terminal device, a terminal device and an access network device. The method includes that: a terminal device receives configuration information from an access network device, the configuration information being configured to instruct the terminal device to enter an inactive state; and the terminal device determines whether to enter a power saving mode under the inactive state, a radio frequency module of the terminal device in the power saving mode being off. According to the method for determining a state of a terminal device, terminal device and access network device of the embodiments of the disclosure, the terminal device under the inactive state may enter the power saving mode, and power consumption of the terminal device is further reduced.