Dynamic Bandwidth Part Configuration for Satellite Beam Resource Optimization
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Solution Overview
Problem
In multi-beam satellite communication systems, the uneven distribution of services across beams leads to inefficient use of communication resources, as a fixed number of dedicated bandwidth parts (BWP) are shared among multiple beams, resulting in resource wastage.
Innovation Solution
A communication method and apparatus that allow for flexible configuration of the bandwidth part (BWP) of a beam based on the actual communication requirements of a terminal device, using information indicating the relative amount between the configured BWP and a dedicated BWP, thereby optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed number of dedicated BWPs are shared among multiple beams, then the system can support multiple beams with standardized configuration, but communication resources are wasted when service volume is small
Solution Approach 1:
The patent introduces dynamic BWP configuration where the BWP size is no longer fixed but adapts based on actual service requirements. The network device determines a first BWP size for the access beam based on service volume, and the terminal device configures its BWP accordingly. This dynamic adjustment mechanism allows the system to optimize resource usage by matching BWP size to actual traffic needs, resolving the contradiction between standardized multi-beam support and resource waste.
Solution Approach 2:
The patent changes the BWP configuration parameter from a fixed standardized value to a dynamically determined value based on service volume. The network device calculates the first BWP size by adjusting parameters such as subcarrier spacing, cyclic prefix length, and resource block allocation according to actual service requirements. This parameter change enables flexible resource allocation that prevents waste while maintaining multi-beam support capability.
2Device complexity
If multiple beams share the same dedicated BWP, then device complexity is reduced, but resource allocation efficiency decreases due to uneven service distribution
Solution Approach 1:
The patent applies local quality by allowing different beams to have different BWP configurations tailored to their specific service requirements. Instead of forcing all beams to share identical BWP parameters, the network device determines customized first BWP sizes for each access beam based on local service volume and characteristics. This local customization improves resource allocation efficiency while the overall framework remains manageable through standardized procedures.
Solution Approach 2:
The patent segments the BWP configuration process into distinct steps: the network device determines the first BWP size based on service requirements, then indicates this configuration to the terminal device, which applies the specific parameters. This segmentation allows complex per-beam optimization to be achieved through a systematic, manageable process that doesn't overwhelm device complexity.
3Productivity
If a larger BWP is allocated to ensure sufficient bandwidth, then communication capacity is improved, but resource waste increases when service volume is small
Solution Approach 1:
The patent implements partial action by allocating BWP resources exactly matching the service requirements rather than providing excessive bandwidth. The network device calculates the first BWP size based on actual service volume, allocating only the necessary portion of spectrum resources. This partial allocation ensures sufficient communication capacity for the given service load while avoiding the waste that would result from over-provisioning bandwidth.
Data Source
AI summary
The present disclosure relates to communication methods and apparatuses. In one example method, a terminal device receives first information from an access device, and determines a first bandwidth part (BWP) of an access beam of the terminal device based on the received first information and a second BWP configured for the access beam of the terminal device. Then, the terminal device communicates with the access device in the determined first BWP by using the access beam. The first information indicates a relationship between the first BWP and the second BWP. The second BWP is a dedicated BWP configured for the access beam of the terminal device.