Signaling Duplex Mode in Wireless System Information
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Solution Overview
Problem
Current wireless communication systems lack efficient mechanisms to indicate whether a cell is operating in full-duplex or half-duplex mode, leading to potential interference and suboptimal UE access procedures.
Innovation Solution
Implementing signaling and procedures that utilize Master Information Blocks (MIB) and System Information Blocks (SIB) to transmit information about the duplex mode, such as intraFrequencyReselection bits, spare bits, or reserved bits in the PBCH payload, allowing base stations and UEs to determine and adapt to the duplex mode for initial access and camping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If system information is used to indicate duplex mode, then UE can determine cell mode and optimize access procedures, but system information complexity and signaling overhead increase
Solution Approach 1:
The patent embeds the duplex mode indication within existing system information structures (MIB and SIB) rather than creating a separate signaling mechanism. The indication is nested as a specific field (e.g., intraFrequencyReselection bit, spare bit, or reserved bit) within the hierarchical system information framework, allowing UE to extract duplex mode information without processing entirely new complex structures.
Solution Approach 2:
The patent repurposes existing bits in the system information (such as intraFrequencyReselection bit, spare bits in MIB, or reserved bits in PBCH payload) to carry duplex mode indication. These bits originally served other functions or were unused, but now serve the dual purpose of their original function plus indicating whether the cell operates in full-duplex or half-duplex mode, thereby avoiding additional signaling overhead.
2Productivity
If duplex mode indication is added to MIB, then initial access efficiency improves, but MIB structure and existing bit functions become more complex
Solution Approach 1:
The patent recovers unused or discarded bit resources within the MIB structure (such as spare bits or reserved bits) and repurposes them to carry the duplex mode indication. This approach reclaims previously wasted signaling resources and puts them to productive use without requiring expansion of the MIB structure or compromise of its existing functionality.
Solution Approach 2:
The patent provides flexibility in selecting which bit to use for duplex mode indication based on the specific MIB configuration and available resources. The system can dynamically choose among multiple options (intraFrequencyReselection bit, spare bit, or reserved bit) depending on the operational context, allowing the MIB structure to adapt to different deployment scenarios while maintaining efficient initial access.
3Measurement precision
If duplex mode information is transmitted via SIB, then access procedure accuracy improves, but information transmission overhead increases
Solution Approach 1:
The patent extracts the duplex mode indication from the main body of system information and places it in a dedicated, easily identifiable location within the MIB or SIB structure. By extracting this critical information and positioning it in a prominent field (such as a specific bit in MIB), the UE can quickly determine the duplex mode without having to parse through the entire system information message, thereby reducing processing overhead while maintaining determination accuracy.
Data Source
AI summary
Some aspects relate to apparatuses and methods for implementing mechanisms for providing signaling and procedures to indicate a mode of communication of a wireless communication system. For example, a base station is configured to determine a mode of communication for a cell associated with the base station. The mode of communication can include one of a full-duplex mode or a half-duplex mode. The base station can further generate system information to enable initial access by a user equipment (UE) to the cell. A portion of the system information can indicate the mode of communication for the cell. The base station can also transmit the system information to the UE.