5G BWP Deactivation via Independent Timer Segmentation
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Solution Overview
Problem
In 5G new radio (NR) systems, managing multiple active Bandwidth Parts (BWPs) is challenging due to varying activation durations, as existing methods lack a standardized approach for BWP deactivation processing, leading to inefficiencies in power consumption and transmission reliability.
Innovation Solution
A method where a terminal receives information from a network device indicating correspondence between default BWPs and active BWPs, along with timers, to perform deactivation and activation processing based on timer expiration, ensuring reliable transmission and optimal energy management by setting timers for each active BWP and activating default BWPs accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single timer is used for BWP deactivation as in prior art, then the implementation is simple, but it cannot handle multiple activated BWPs with different activation durations
Solution Approach 1:
The patent divides the single timer into multiple independent timers, with each timer corresponding to a specific activated BWP. This segmentation allows each BWP to be managed independently with its own activation duration, enabling the system to handle multiple activated BWPs simultaneously while maintaining clear and manageable timer operations for each BWP.
2Productivity
If the terminal monitors downlink control information on a large bandwidth BWP, then the data rate requirement is satisfied, but the power consumption increases
Solution Approach 1:
The patent implements dynamic BWP switching based on data transmission status. When data transmission is active, the terminal operates on a larger bandwidth BWP to satisfy data rate requirements. When data transmission stops and the inactivity timer expires, the terminal switches to a smaller bandwidth BWP or default BWP to reduce power consumption. This dynamic adjustment allows the system to optimize between data rate and power consumption based on real-time conditions.
3Use of energy by moving object
If the terminal switches to a small BWP to reduce power consumption, then energy efficiency improves, but transmission reliability may be affected
Solution Approach 1:
The patent configures a default BWP in advance that serves as a fallback option. When all activated BWPs are deactivated due to timer expiration, the terminal automatically switches to the pre-configured default BWP, ensuring that transmission reliability is maintained even after switching from larger bandwidth BWPs to reduce power consumption. This preliminary configuration of a default BWP provides a safety net for reliable communication.
Data Source
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AI summary
Embodiments of this application provide a bandwidth part BWP processing method and a device. The method includes: receiving, by a terminal, first information and second information that are sent by a network device, where the first information is used to indicate that at least one default bandwidth part BWP each corresponds to at least two active BWPs, the second information is used to indicate that the at least two active BWPs correspond to at least one first timer, and the first timer is a timer used by the terminal to perform deactivation processing on at least one of the at least two active BWPs; and performing, by the terminal, deactivation processing on the at least one of the at least two active BWPs and activation processing on a BWP in the at least one default BWP based on the first information and the second information, or performing deactivation processing on the at least one of the at least two active BWPs based on the first information and the second information. The embodiments provide a deactivation implementation when there are a plurality of active BWPs.