UE Power Preference Signaling for Wireless Network Energy Management
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) has limited control over functions and processes that affect battery life and latency, leading to suboptimal power savings and performance, as base stations like eNodeBs manage these aspects without UE input.
Innovation Solution
UEs are enabled to communicate their assistance information, such as power preferences and timer lengths, to eNodeBs, allowing for optimized power modes and reduced latency by configuring power-saving settings and releasing connections when necessary, thereby enhancing power management and quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If base stations manage power-saving functions without UE input, then network control is simplified, but power saving performance is suboptimal
Solution Approach 1:
The patent implements feedback by allowing UEs to send assistance information (power preference indications, timer length preferences, latency requirements) to the base station. The base station uses this feedback to optimize power-saving configurations, achieving better power savings while maintaining manageable network control through standardized feedback mechanisms.
2Use of energy by moving object
If UEs have full control over power-saving functions, then power saving performance is optimized, but device complexity increases
Solution Approach 1:
The base station acts as an intermediary that receives detailed UE preferences and translates them into standardized power-saving configurations. This mediator approach allows UEs to express their needs without directly managing the complex power-saving logic, distributing complexity appropriately between UE and network.
3Loss of time
If connection is maintained for extended periods, then latency is reduced, but power consumption increases
Solution Approach 1:
The patent implements dynamic connection management where the base station adjusts connection release timing based on UE-provided timer length preferences and latency requirements. This dynamic approach allows the system to optimize the balance between maintaining connections for low latency and releasing connections for power savings, adapting to changing conditions.
4Use of energy by moving object
If power-saving modes are enforced strictly, then power consumption is reduced, but network resource allocation efficiency decreases
Solution Approach 1:
The patent uses parameter changes by allowing UEs to indicate their power preferences and timer length requirements, which the base station uses to adjust power-saving configurations. This parameter-based approach enables flexible optimization of both power consumption and network resource allocation efficiency based on individual UE needs and network conditions.
Data Source
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AI summary
Methods, systems, and devices for low power consumption in wireless communication systems are disclosed herein. An evolved node B (eNodeB) is configured to provide a connection reconfiguration message to user equipment (UE) connected to the eNodeB, the connection reconfiguration message configuring the UE to indicate a power preference. The eNodeB receives assistance information from the UE. The assistance information includes a low power preference indication and a timer length, wherein the timer length indicates a preferred duration for a low power mode. The eNodeB provides, in response to receiving the assistance information, a connection release message to the UE. The connection release message includes paging discontinuous reception (DRX) information that includes the timer length.