Bandwidth Part Switching for Wireless Power Optimization
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in managing periodic data bursts, particularly in applications like virtual reality, where large amounts of data are transmitted intermittently, leading to high power consumption and processing overhead due to the use of fixed bandwidth configurations.
Innovation Solution
Implementing bandwidth part switching techniques that allow user equipment (UE) to switch between wideband and narrowband bandwidth parts based on indicators, such as an end of burst indicator, to optimize power usage and processing efficiency by adjusting bandwidth usage dynamically between communication bursts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wideband bandwidth part is used for periodic communications bursts, then data transmission capacity is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth part switching, where the UE transitions between wideband BWP during data bursts and narrowband BWP during idle periods. This dynamic adjustment of bandwidth configuration allows the system to optimize data transmission capacity when needed while reducing power consumption during non-burst periods, directly resolving the contradiction between productivity and energy usage.
Solution Approach 2:
The patent utilizes periodic communication bursts as the trigger for bandwidth switching. The UE monitors for periodic data bursts and switches to wideband BWP only during these periodic intervals, then returns to narrowband BWP. This periodic action pattern ensures high data transmission capacity during bursts while minimizing power consumption during the intervals between bursts.
2Productivity
If wideband bandwidth part is used for periodic communications bursts, then data transmission capacity is improved, but processing overhead increases
Solution Approach 1:
The patent dynamically adjusts the active bandwidth part based on communication burst detection. During idle periods, the UE operates on narrowband BWP with minimal processing requirements. When a data burst is detected, the UE switches to wideband BWP to handle high-capacity data transmission. This dynamic switching reduces processing overhead during non-burst periods while maintaining high data transmission capacity when required.
3Use of energy by moving object
If narrowband bandwidth part is used between communications bursts, then power consumption is reduced, but data transmission capacity decreases
Solution Approach 1:
The patent employs periodic communication burst detection to trigger bandwidth part switching. The UE remains in narrowband BWP during regular intervals to conserve power, then switches to wideband BWP when periodic data bursts occur. This periodic switching strategy ensures that data transmission capacity is sufficient during bursts while maintaining low power consumption during intervals between bursts.
Solution Approach 2:
The patent implements dynamic bandwidth adjustment where the active BWP changes based on real-time communication conditions. The UE switches from narrowband to wideband BWP dynamically when data bursts are detected, ensuring adequate transmission capacity is available on-demand. This dynamic approach resolves the contradiction by providing high capacity only when needed rather than continuously.
4Productivity
If bandwidth part switching is implemented, then system efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements autonomous bandwidth part switching at the UE side based on detection of communication bursts. The UE independently determines when to switch between narrowband and wideband BWP without requiring complex network coordination for each switching event. This self-service approach improves system efficiency while limiting the increase in device complexity to only the necessary burst detection and switching logic.
Solution Approach 2:
The patent introduces dynamic bandwidth part switching capability that adapts to communication patterns. The switching mechanism is triggered by detected data bursts and follows predefined switching rules, providing system efficiency improvements through optimized resource usage. The complexity increase is confined to the dynamic switching logic and burst detection mechanisms, rather than requiring comprehensive system-wide complexity increases.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described in which a wideband bandwidth part (BWP) may be used for periodic communications bursts, and a user equipment (UE) may switch to a narrowband BWP between the communications bursts, which may provide reduced power consumption and reduced processing overhead at the UE. An end of burst indicator may be provided with the wideband BWP communications that indicates a timing for switching from the wideband BWP to the narrowband BWP. The end of burst indicator may be provided prior to a last downlink shared channel communication of the communications burst, and the UE may switch to the narrowband BWP upon completion of the last downlink shared channel communication. The UE may switch from the narrowband BWP to the wideband BWP for a subsequent communications burst autonomously or based on an explicit indication.