Wireless Access Using Stored Parameters for MTC Devices
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Solution Overview
Problem
Current LTE network access procedures are inefficient for devices at the cell edge or in coverage holes, particularly for Machine Type Communication (MTC) devices, as they require reading all System Information (SI) for initial access, leading to delayed connections and high power consumption.
Innovation Solution
A method where devices can use stored access parameters to initiate network access without necessarily reading all SI, by transmitting an access request based on stored configurations, and the network decides whether to accept this request, allowing for efficient small data transmissions and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices read all System Information (SI) for initial access, then access reliability is improved, but access time and power consumption increase
Solution Approach 1:
The patent applies preliminary action by having devices store access parameters in advance during previous network connections or from pre-configured settings. When initial access is needed, devices can use these pre-stored parameters to initiate connection without reading current SI, thereby reducing access time while maintaining reliability through network validation of the stored parameters.
Solution Approach 2:
The patent segments the system information into essential access parameters that can be stored and non-essential real-time parameters that must be read from current SI. This segmentation allows devices to use only the critical stored parameters for initial access attempts, reducing the time and power required while maintaining sufficient reliability.
2Reliability
If devices read all System Information (SI) for initial access, then access reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by having devices store access parameters in advance during previous network connections or from pre-configured settings. When initial access is needed, devices can use these pre-stored parameters to initiate connection without reading current SI, thereby reducing access time while maintaining reliability through network validation of the stored parameters.
Solution Approach 2:
The patent segments the system information into essential access parameters that can be stored and non-essential real-time parameters that must be read from current SI. This segmentation allows devices to use only the critical stored parameters for initial access attempts, reducing the time and power required while maintaining sufficient reliability.
3Speed
If devices use stored access parameters, then access speed is improved, but network control flexibility is reduced
Solution Approach 1:
The patent applies feedback by having the network validate stored access parameters and provide feedback to devices. The network can detect when a device uses stored parameters and respond with appropriate instructions to read current SI or adjust access parameters, thereby maintaining network control flexibility while enabling faster initial access through stored parameter utilization.
Solution Approach 2:
The patent applies dynamics by making the access parameter selection process adaptive rather than static. Devices can dynamically choose between using stored parameters for speed or reading current SI for flexibility, and the network can dynamically adjust its response based on the device's approach, balancing access speed with network control flexibility.
Data Source
AI summary
A wireless communication system, including: a device configured to: store a access parameter; transit a Radio Resource Control (RRC) CONNECTED mode to an RRC IDLE mode; and transmit a first message for the access request when in the IDLE mode and storing the access parameter; and a base station configured to: receive the first message; and after receiving the first message, transmit to the terminal a second message indicating that the access parameter is valid or third message indicating the access request is rejected.