RedCap Higher-Priority Carrier Search Intervals via eDRX
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Solution Overview
Problem
Reduced capability (RedCap) user equipment (UE) faces a tradeoff between network performance and power/energy consumption when searching for higher priority carriers, as extended search times impact network performance but can conserve power, necessitating a balanced approach.
Innovation Solution
A method and apparatus for determining a time interval for RedCap UE to search for higher priority carriers by comparing a first parameter, such as an eDRX cycle, with predefined thresholds to set a second parameter for the search interval, optimizing performance and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an extended time period is used to search for higher priority carriers, then power and energy consumption of the RedCap UE is reduced, but network performance and scheduling capability deteriorate
Solution Approach 1:
The patent applies dynamics by making the search time period configurable and adaptable. The network can dynamically adjust the search time period parameter based on current network conditions, UE capabilities, and service requirements. This allows the system to optimize between power consumption and network performance in real-time, rather than using a fixed extended time period that always prioritizes power saving.
Solution Approach 2:
The patent implements parameter changes by introducing a configurable search time period parameter that can be adjusted between different values. The network can modify this parameter to change the behavior of carrier searching - using shorter periods for better network responsiveness or longer periods for power saving, depending on the operational context. This directly addresses the contradiction by providing a tunable parameter to balance the two opposing requirements.
2Productivity
If a shorter time period is used to search for higher priority carriers, then network performance and scheduling capability are improved, but power and energy consumption of the RedCap UE increases
Solution Approach 1:
The patent applies dynamics by enabling the network to adaptively adjust the search time period based on current operational requirements. When network performance is prioritized, the network can configure shorter search periods, allowing UEs to quickly detect and switch to higher priority carriers when needed, thus improving scheduling capability and network responsiveness.
Solution Approach 2:
The patent implements parameter changes by allowing the search time period to be configured within a range of values. The network can select appropriate parameter values based on service requirements - using shorter periods when rapid carrier switching is needed for performance-critical services, thereby improving network productivity while managing power consumption according to operational priorities.
3Speed
If frequent carrier searching is performed, then network responsiveness and scheduling capability are improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies periodic action by implementing carrier searching at regular, configured time intervals rather than continuously or ad-hoc. The network configures a periodic search time period that balances responsiveness with processing load - frequent enough to maintain network responsiveness but spaced out to allow processing intervals, thereby reducing device complexity and power consumption compared to continuous searching.
Solution Approach 2:
The patent applies dynamics by making the search frequency adaptable. The network can adjust the periodic search interval based on current network conditions and UE state, increasing frequency when rapid response is needed and decreasing it when processing load should be reduced, thus dynamically balancing network responsiveness against device complexity.
Data Source
AI summary
The present disclosure provides a terminal device. The terminal device can receive a first parameter for the terminal device, wherein a first carrier is used by the terminal device. The terminal device can perform a comparison between the first parameter and one or more thresholds, and determine a second parameter for the terminal device based on the comparison. The second parameter can indicate a time interval for the terminal device to search for one or more carriers with a priority higher than the first carrier. The terminal device can receive the first parameter from a network device.