Multi-band Signal Transmission with Sub-band Failure Switching
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Solution Overview
Problem
Current wireless communication systems lack a procedure for using multiple frequency bands and fail to support data transmission/reception when a first sub-band preparation indicator fails, preventing seamless transition to a second sub-band.
Innovation Solution
A method and system that enable a mobile station and base station to transmit and receive data using a primary band and a sub-band, with mechanisms for detecting failures in the first sub-band and switching to a second sub-band, and for notifying the base station of the capability to use multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple frequency bands are used for data transmission, then data capacity and transmission speed are improved, but system complexity and lack of standardized procedures worsen
Solution Approach 1:
The frequency spectrum is segmented into multiple sub-bands (first sub-band, second sub-band) that can be independently activated. The system divides the communication channel into discrete frequency segments, allowing selective activation based on preparation status and failure scenarios, thereby managing complexity through modular frequency allocation
Solution Approach 2:
The system performs preliminary actions by transmitting preparation indicators before actual data transmission on each sub-band. The mobile station and base station exchange sub-band preparation indicators to confirm readiness before activating a sub-band for data transmission, ensuring proper synchronization and reducing transmission errors
Solution Approach 3:
Sub-band preparation indicators serve as intermediary signals that mediate between the mobile station and base station before establishing data transmission on a sub-band. These indicators act as handshake signals that coordinate the activation of multiple frequency bands, providing a standardized procedure for complex multi-band operations
2Productivity
If a first sub-band is used for data transmission, then data transmission capability is improved, but reliability worsens when transmission failure occurs
Solution Approach 1:
The system prepares backup transmission paths by having the mobile station acquire synchronization with multiple sub-bands in advance. When the first sub-band transmission fails, the system can immediately switch to the second sub-band without interruption, as the alternative path was pre-prepared and synchronized
Solution Approach 2:
The system implements feedback mechanisms through sub-band preparation indicators that confirm readiness status. When transmission failure is detected on the first sub-band, the feedback loop triggers automatic switching to the second sub-band, ensuring continuous data transmission and improving overall reliability
3Adaptability or versatility
If sub-band switching capability is added, then system adaptability is improved, but device complexity increases
Solution Approach 1:
The mobile station is designed with multi-functionality to operate on multiple sub-bands using the same hardware resources. The device can dynamically activate different sub-bands for data transmission based on preparation status and failure conditions, making the hardware versatile without requiring separate dedicated components for each frequency band
Solution Approach 2:
The system implements dynamic sub-band switching where the mobile station can transition between different frequency bands based on real-time conditions. The preparation indicators and failure detection mechanisms enable flexible, dynamic allocation of frequency resources, allowing the system to adapt to changing transmission conditions without fixed rigid configurations
Data Source
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AI summary
Disclosed is a system and a method of signal transmission/reception by a mobile station in a wireless communication system. The method includes: transmitting a first sub-band preparation indicator, which indicates that the mobile station has been prepared for transmission/reception of a signal through a first sub-band, to a base station through a primary band; transmitting a first sub-band failure indicator to the base station through the primary band upon detecting failure in transmitting the first sub-band preparation indicator; receiving sub-band information on a second sub-band, which is different from the first sub-band, from the BS through the primary band; and acquiring synchronization with the second sub-band, so as to enable transmission/reception of a signal through the second sub-band based on the sub-band information.