Dynamic BWP Configuration for RF Resource Adaptation
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Solution Overview
Problem
Existing wireless systems face challenges in efficiently utilizing radio frequency resources due to the inability of FDD and TDD modes to dynamically adjust radio frequency configurations for uplink and downlink changes, limiting data transmission rates for user equipment (UE).
Innovation Solution
A communication method and apparatus that allow network devices and user equipment (UE) to obtain and configure subbands or bandwidth parts (BWP) in a carrier, determining their type based on interference measurement reporting, and sending configuration information via signaling to adapt communication to dynamic changes, enabling efficient radio frequency resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If FDD or TDD mode is used for radio frequency resource configuration, then the system provides stable communication modes, but the utilization of radio frequency resources cannot be improved due to inability to dynamically adjust to uplink and downlink changes
Solution Approach 1:
The patent divides the carrier bandwidth into multiple subbands and introduces bandwidth parts (BWP) as configurable segments. Each BWP can be independently configured with different numerologies and assigned to different UEs, allowing dynamic adaptation to varying uplink and downlink traffic demands without reconfiguring the entire system.
Solution Approach 2:
The patent implements dynamic BWP configuration where the network device can activate, deactivate, and switch between different BWPs based on real-time traffic conditions. This allows the system to dynamically adapt resource allocation to changing uplink and downlink requirements, moving away from static FDD/TDD mode configurations.
2Productivity
If existing radio frequency resources are used with static configuration, then the system maintains simple operation, but the data transmission rate cannot meet high data requirements of user equipment
Solution Approach 1:
The patent applies different numerologies (subcarrier spacing, cyclic prefix lengths) to different bandwidth parts based on local requirements. For example, larger subcarrier spacing can be applied to BWPs requiring low latency, while smaller spacing is used for bandwidth-efficient applications, optimizing performance locally within each BWP.
Solution Approach 2:
The patent enables dynamic change of key parameters including subcarrier spacing, cyclic prefix type, and bandwidth allocation within BWPs. These parameter changes allow the system to adapt to different service requirements (e.g., enhanced mobile broadband, ultra-reliable low-latency communication) and improve data transmission rates.
3Adaptability or versatility
If subband or BWP configuration is implemented dynamically, then the utilization of radio frequency resources is improved, but the complexity of configuration signaling increases
Solution Approach 1:
The patent pre-configures multiple BWPs with different parameters and characteristics before actual data transmission. The network device prepares these BWPs in advance and activates them as needed, avoiding the need for extensive real-time configuration signaling during active transmission periods.
Solution Approach 2:
The patent implements a feedback mechanism where UEs report their channel conditions, buffer status, and service requirements to the network device. Based on this feedback, the network device intelligently selects and activates appropriate BWPs, reducing the need for exhaustive configuration signaling by making informed decisions based on actual system state.
Data Source
AI summary
A communication method is performed by a network device and includes: obtaining a subband or a bandwidth part (BWP) in a carrier; determining a type of each subband or each BWP; determining configuration information according to the type; sending the configuration information to at least one user equipment (UE) via configuration signaling; and communicating with the at least one UE in a unit of the subband or the BWP according to the configuration information.