UE Power-Saving Mode Signaling Reduction
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Solution Overview
Problem
User equipment (UE) experiences excessive signaling cycles when activating and deactivating power-efficient modes, leading to increased power consumption due to frequent fluctuations in radio conditions, negating the intended power-saving benefits.
Innovation Solution
The UE implements an enhanced power-saving mode that bars the transmission of signals intended to release the bearer between the UE and the packet data network, preventing excessive signaling by identifying conditions likely to cause frequent mode activations and deactivations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE activates power-efficient mode by transmitting signal to release bearer, then power consumption is reduced, but excessive signaling cycles occur when radio conditions fluctuate
Solution Approach 1:
The network performs preliminary actions by sending activation/deactivation commands to the UE based on predicted radio conditions or service requirements. This allows the UE to activate power-efficient mode without initiating signaling cycles, as the network has already prepared the necessary context and will handle subsequent reactivation when needed, preventing the UE from engaging in repeated activation-deactivation signaling.
Solution Approach 2:
The network acts as an intermediary that manages the power-efficient mode state on its side while the UE simply executes commands. The network maintains awareness of the mode state and service requirements, mediating between the UE's power-saving needs and the network's service delivery requirements, thereby eliminating the need for the UE to perform repeated signaling to activate/deactivate the mode.
2Adaptability or versatility
If the UE frequently activates and deactivates power-efficient mode, then access to services is maintained, but power consumption increases due to excessive signaling
Solution Approach 1:
The network performs preliminary setup by configuring the UE with power-efficient mode parameters and maintaining service context information. When the UE needs to activate the mode, it does so based on network commands rather than autonomous decisions, ensuring service access is maintained while avoiding repeated signaling cycles that would increase power consumption.
Solution Approach 2:
The network provides feedback to the UE regarding service requirements and radio conditions, enabling the UE to activate power-efficient mode only when appropriate. This feedback mechanism prevents futile activation-deactivation cycles by informing the UE when the mode should remain active or be deactivated, thereby maintaining service access while reducing unnecessary signaling and power consumption.
3Use of energy by moving object
If the UE autonomously decides to activate power-efficient mode, then power consumption is reduced, but the UE may get stuck in signaling cycles
Solution Approach 1:
The network provides feedback to the UE about service requirements and radio conditions, allowing the UE to make informed decisions about activating power-efficient mode. This feedback prevents the UE from autonomously entering signaling cycles by informing it when activation is appropriate and when it should wait for network commands, thereby improving activation stability while maintaining power savings.
Solution Approach 2:
The network acts as an intermediary that coordinates between the UE's power-saving objectives and the overall system reliability. By managing mode activation/deactivation timing and providing commands to the UE, the network ensures that power-efficient mode activation does not compromise service reliability or create unstable signaling cycles.
Data Source
AI summary
A device and method for a user equipment (UE) to reduce signaling with a network by conditionally barring the transmission of a particular signal to the network. The UE determines that a first predetermined condition related to radio conditions between the UE and the first cell is satisfied. The UE determines whether to activate a first mode of operation or a second mode of operation based on a second predetermined condition. The first mode of operation includes transmitting a signal that is intended to cause the release of a bearer between the UE and a packet data network (PDN). The second mode of operation includes barring the transmission of the signal that is intended to cause the release of the bearer between the UE and the PDN.