Sub-Network Band Selection to Minimize Coexistence and Self-Interference
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Solution Overview
Problem
Existing technologies face challenges in determining sub-network bands for short-range sub-networks in 6G scenarios, particularly in managing co-existence and self-interference issues when multiple radio access technologies operate simultaneously, which affects performance and reliability.
Innovation Solution
A terminal device determines common and available bands based on hardware capabilities and interference conditions to create sub-networks with minimal co-existence and self-interference impacts, using methods to identify and prioritize frequency allocations that avoid channel access failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device selects bands for sub-network creation without considering co-existence and self-interference, then the sub-network can be established quickly, but channel access failures may occur due to operation of other radio access technologies
Solution Approach 1:
The terminal device performs preliminary identification of common bands between itself and sub-network devices, and preliminary determination of available bands by checking network node support before final band selection. This preliminary action prevents channel access failures by ensuring band compatibility is established in advance.
Solution Approach 2:
The terminal device uses feedback information from network nodes about active cells and supported bands to dynamically determine available bands. This feedback mechanism allows the terminal to adjust its band selection based on real-time network conditions, avoiding conflicts with other radio access technologies.
2Adaptability or versatility
If the terminal device considers all possible bands for sub-network creation, then more bandwidth options are available, but the determination process becomes more complex and time-consuming
Solution Approach 1:
The band selection process is segmented into distinct stages: first identifying common bands among terminal and sub-network devices, then filtering for network-supported bands, and finally selecting from available bands. This segmentation reduces complexity by handling large sets of bands in manageable steps rather than evaluating all possibilities simultaneously.
Solution Approach 2:
The terminal device applies different filtering criteria at different stages of band selection. Initially, it filters for common bands based on hardware capabilities, then applies network-specific filters for available bands, and finally applies hardware capability filters for candidate bands. This localized filtering approach efficiently reduces the search space while maintaining adaptability.
3Reliability
If the terminal device uses bands that are active for network communication, then network connectivity is maintained, but self-interference occurs affecting sub-network performance
Solution Approach 1:
The terminal device extracts active bands from the set of common bands by determining which bands are currently active for network communication. These active bands are then excluded from the available bands list, preventing the terminal from selecting bands that would cause self-interference with ongoing network communication.
Solution Approach 2:
The terminal device converts the potentially harmful information about active bands into a beneficial filtering criterion. By identifying which bands are active and using this information to exclude those bands from sub-network selection, the system transforms the constraint of limited available bands into a mechanism for avoiding self-interference, improving overall sub-network performance.
Data Source
AI summary
Embodiments of the present disclosure relate to a terminal device, a method, an apparatus, and a medium for determining sub-network bands. In an aspect, a terminal device determines one or more common bands among supported operating bands received from a network node and at least one sub-network device. The terminal device determines one or more available bands from the one or more common bands. The terminal device determines one or more candidate bands to be used for creating the at least one sub-network. With the embodiments in the present disclosure, the terminal device can avoid bands which may cause or suffer channel access failures due to operation of other radio access technologies, and the terminal device can select the sub-network spectrum based on least co-existence and least self-interference impacts and establish the sub-network at this spectrum location.