Half-Duplex User Equipment Subframe Configuration for System Information
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Solution Overview
Problem
User equipment supporting half duplex data transmission mode may fail to correctly receive updated system information due to the inclusion of uplink or idle subframes in the system information receiving window, leading to reduced reliability in acquiring system information and data transmission.
Innovation Solution
The user equipment determines and configures uplink or uplink and idle subframes within the system information window to downlink subframes, enabling the reception of updated system information from the access network equipment on all subframes in the window, thereby enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user equipment supporting half duplex data transmission mode uses the original subframe configuration in the system information receiving window, then the device complexity is reduced, but the reliability of acquiring system information deteriorates because uplink or idle subframes prevent correct reception of updated system information
Solution Approach 1:
The patent applies dynamics by making the subframe configuration adjustable and adaptive. The user equipment dynamically changes subframe configurations based on whether it supports half-duplex or full-duplex transmission mode. For half-duplex devices, the system dynamically reconfigures uplink subframes as downlink subframes during system information reception periods, allowing the configuration to adapt to reception requirements rather than remaining static
Solution Approach 2:
The patent changes the subframe configuration parameters dynamically. When system information reception is required, the system modifies the subframe type parameter (from uplink or idle to downlink) for specific subframes in the receiving window. This parameter change ensures that half-duplex devices can receive system information without conflict, while full-duplex devices maintain their original configuration
2Reliability
If the user equipment supporting half duplex data transmission mode receives system information in a window containing uplink or idle subframes, then the ease of operation is maintained, but the reliability of data transmission deteriorates due to inability to correctly receive updated system information
Solution Approach 1:
The patent applies preliminary action by pre-configuring the subframe structure before system information reception occurs. The system determines the duplex capability of the user equipment in advance and pre-arranges the subframe configuration in the receiving window accordingly. For half-duplex devices, uplink subframes are preconverted to downlink subframes before the actual system information transmission, ensuring reception readiness without requiring complex real-time adjustments
3Reliability
If the user equipment converts uplink subframes to downlink subframes to receive updated system information, then the reliability of acquiring system information is improved, but the device complexity increases due to additional configuration operations
Solution Approach 1:
The patent applies local quality by making subframe configuration changes only in specific locations and times rather than globally. Only certain subframes within the system information receiving window are reconfigured from uplink to downlink, while other subframes maintain their original configuration. This localized approach minimizes the scope of configuration operations and reduces overall device complexity
Solution Approach 2:
The patent creates a universal solution that handles both half-duplex and full-duplex user equipment through a unified mechanism. The same system information receiving window structure and subframe management approach works for both device types, with the system automatically adapting the configuration based on device capability detection. This multi-functionality reduces the need for separate handling procedures and simplifies overall system complexity
Data Source
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AI summary
Embodiments of the present invention provide a method for updating system information, an access network equipment, and a user equipment. Embodiments of the present invention can avoid the problem that, in the prior art, the user equipment is unable to correctly receive updated system information in that a subframe, configured by the user equipment supporting a half duplex data transmission mode in a system information receiving window corresponding to updated system information, may include an uplink subframe, or may further include an idle subframe, thus enhancing reliability of acquiring system information and reliability of data transmission.