Wireless Carrier Frequency Indication for Complex Carrier Distributions
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Solution Overview
Problem
The complexity of effective carrier distribution across different countries due to varying carrier frequencies, duplex modes, and carrier spacings poses challenges in wireless communication, particularly outside China, necessitating flexible adaptation by networks and terminals.
Innovation Solution
A communications method and apparatus that determines and indicates effective carrier frequencies through network devices to terminal devices, using specific indication information to adapt to diverse carrier distributions, reducing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional carrier configuration methods are used, then carrier aggregation capability can be configured, but signaling overheads increase and adaptability to complex carrier distributions decreases
Solution Approach 1:
The patent extracts the essential carrier indication information from complex configuration messages. Instead of transmitting complete carrier configuration details, the system identifies and transmits only the key parameters (carrier frequency, carrier type, duplex mode) that are necessary for terminal adaptation, thereby reducing signaling overhead while maintaining adaptability to complex carrier distributions
Solution Approach 2:
The patent changes the parameter representation method by using compact indication fields instead of detailed configuration parameters. The carrier information is encoded using optimized parameters (frequency offsets, carrier indicators) that convey the same adaptive capability with fewer bits, directly reducing signaling overhead while preserving adaptability
2Adaptability or versatility
If detailed carrier configuration information is transmitted, then adaptability to various scenarios improves, but signaling overheads increase
Solution Approach 1:
The patent segments carrier configuration information into essential and optional parts. The essential parameters (carrier frequency, type, duplex mode) are transmitted in a compact format, while scenario-specific details are handled through efficient indication mechanisms, achieving flexible adaptation without proportionally increasing signaling overhead
Solution Approach 2:
The patent transmits partial carrier information that is sufficient for terminal adaptation rather than complete configuration details. The system provides just enough information (carrier indicators, frequency offsets) for the terminal to determine effective carriers, avoiding excessive signaling while maintaining scenario adaptability
Data Source
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AI summary
Embodiments of this application disclose a communications method and apparatus, and relate to the field of communications technologies. The method and the apparatus can be flexibly applied to various complex effective carrier distribution, to indicate an effective carrier, and reduce signaling overheads between a network device and a terminal device. The method may include: obtaining effective carrier indication information from a network device, and obtaining an effective carrier frequency based on the effective carrier indication information, where the effective carrier indication information includes first information, second information, and third information, the first information includes first indication information, second indication information, or third indication information, the first indication information is used to indicate that carriers are not paired, the second indication information is used to indicate that carriers are paired, the third indication information is used to indicate a paired carrier frequency spacing, the second information is used to indicate a start carrier frequency, and the third information is used to indicate a frequency domain location of an effective carrier relative to a start carrier.