Bandwidth Part Selection for UE Power and Traffic Bursts
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Solution Overview
Problem
Conventional bandwidth part configuration methods in wireless communications systems lead to inefficient communications and high power consumption at user equipment (UE), particularly when configuring bandwidth parts that span the entire carrier bandwidth.
Innovation Solution
Devices in the wireless communications system determine a bandwidth size for a bandwidth part based on parameters such as traffic burst size, quality of service profile, and other factors to optimize bandwidth usage, allowing for more efficient power management and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bandwidth part spans the entire carrier bandwidth, then communication coverage is improved, but power consumption at UE increases
Solution Approach 1:
The carrier bandwidth is divided into multiple bandwidth parts (BWPs), each representing a segment of the total bandwidth. The UE can be configured with one or more BWPs and activate only the necessary ones, rather than monitoring the entire carrier bandwidth. This segmentation allows the UE to reduce power consumption by limiting its monitoring scope to only the active BWP(s) while still maintaining communication coverage through appropriate BWP selection and switching.
2Use of energy by moving object
If bandwidth part size is reduced to save power, then power consumption decreases, but communication efficiency deteriorates
Solution Approach 1:
The BWP configuration enables dynamic adaptation of bandwidth size based on traffic conditions. The UE can switch between different active BWPs or activate/deactivate BWPs dynamically according to traffic burst size and QoS requirements. This dynamic behavior allows the system to use smaller BWPs during low-traffic periods to save power, while switching to larger BWPs when high data rates are needed, thus maintaining communication efficiency while optimizing power consumption.
Solution Approach 2:
The system changes the bandwidth parameter (BWP size) based on traffic conditions and QoS requirements. By adjusting the active BWP configuration, the system can optimize the trade-off between power consumption and communication efficiency for different traffic scenarios, rather than using a fixed bandwidth configuration.
3Adaptability or versatility
If conventional bandwidth part configuration is used, then system compatibility is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The system pre-configures multiple bandwidth parts with different size characteristics before actual data transmission. Based on the estimated traffic burst size and QoS profile, the appropriate BWP is selected and activated in advance. This preliminary configuration and selection process enables more efficient resource utilization by matching the bandwidth allocation to the actual traffic requirements, rather than using a fixed or default configuration.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) may communicate in a wire-less communications system. The base station may select a first bandwidth part from a plurality of bandwidth parts, the first bandwidth part having a bandwidth size corresponding to a traffic burst size for application data traffic within a time period. The UE may determine the bandwidth size using one or more parameters and indicate the bandwidth size to the base station. Additionally or alternatively, the base station may determine the bandwidth size using the one or more parameters. The base station may transmit, to the UE, a control signal indicating the first band-width part having the bandwidth size. The base station may schedule transmission of the application data traffic using the first bandwidth part and communicate the application data traffic with the UE using the first bandwidth part.