5G UE Cell Camping for Bandwidth and Power Trade-Offs
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Solution Overview
Problem
Inefficient use of power and bandwidth in wireless communication systems due to UEs camping on high bandwidth cells when lower bandwidth is sufficient, especially in standalone 5G networks, leading to suboptimal performance and resource utilization.
Innovation Solution
A UE intelligently decides to camp on lower bandwidth cells when available and switches to higher bandwidth cells based on demand and availability, using criteria such as threshold bandwidth, application activity, and power constraints, and supports bandwidth part switching when applicable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If UEs always camp on high bandwidth cells to ensure sufficient bandwidth availability, then bandwidth availability is improved, but power consumption increases and resource utilization becomes inefficient
Solution Approach 1:
The patent implements dynamic bandwidth part switching that allows UEs to adaptively switch between different bandwidth parts based on real-time service requirements and channel conditions. This dynamic adjustment enables the system to optimize power consumption by using smaller bandwidth parts when high data rates are not required, while maintaining the capability to switch to larger bandwidth parts when service demands increase.
Solution Approach 2:
The patent changes the operational parameters of the UE by introducing configurable bandwidth part sizes and switching thresholds. The network can configure multiple bandwidth parts with different bandwidths, and the UE switches between them based on service type, channel quality, and power consumption requirements. This parameter flexibility resolves the contradiction by allowing the system to adjust bandwidth usage to match actual needs rather than always using maximum bandwidth.
2Reliability
If UEs camp on high bandwidth cells to ensure sufficient bandwidth for all potential services, then service quality is improved, but resource utilization deteriorates due to inefficient bandwidth usage
Solution Approach 1:
The patent segments the total system bandwidth into multiple bandwidth parts, each suitable for different service types and quality requirements. Instead of allocating the entire bandwidth to every UE, the system divides bandwidth into manageable segments that can be dynamically assigned based on service needs. This segmentation improves resource utilization by allowing different UEs to use different bandwidth parts simultaneously, while maintaining service quality through appropriate bandwidth allocation.
Solution Approach 2:
The patent enables dynamic adjustment of bandwidth part parameters based on service requirements, channel conditions, and network load. The network can configure different bandwidth parts with varying sizes and characteristics, and switch between them to optimize both service quality and resource utilization. This parameter flexibility allows the system to match bandwidth allocation with actual service demands.
3Adaptability or versatility
If the network configures multiple bandwidth parts for UE to switch between, then adaptability to different service requirements is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the UE autonomously monitors service requirements, channel conditions, and power status to make intelligent decisions about bandwidth part switching. The UE uses pre-configured thresholds and criteria to determine when to switch between bandwidth parts without requiring continuous network control signaling. This self-service approach reduces device complexity by embedding decision-making logic in the UE while maintaining high adaptability to varying service requirements.
Data Source
AI summary
Apparatus and methods are provided for a user equipment (UE) to communicate with a new radio (NR) wireless network in a standalone deployment. The UE camps on a first cell and determines that a first bandwidth (BW) of the first cell is greater than or equal to a threshold BW value. In response, when the UE is not configured for bandwidth part switching (BWPS), the UE determines whether a second cell is available that is intraband with and has a same priority as the first cell and that has a second BW that is less than the threshold BW value. When the second cell is not available, the UE searches for a next lower priority cell that has a third BW that is less than the threshold BW value.