Network Initiated Re-authorization for IoT Coverage Enhancement
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Solution Overview
Problem
The existing cellular network solutions for IoT devices face resource congestion due to the widespread use of coverage enhancement features, which are not effectively managed, leading to inefficiencies and limitations in network access, especially for devices that are not authorized or in areas with high network load.
Innovation Solution
Implementing a system that checks and manages authorization for extended coverage access in IoT devices, allowing reauthorization through paging messages and different discontinuous reception periods, enabling devices to transition between normal and extended coverage while ensuring backward compatibility and minimizing battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If coverage enhancement is used by all CIoT devices, then extended coverage is achieved, but resource congestion occurs in the network
Solution Approach 1:
The patent applies local quality by enabling coverage enhancement selectively for specific devices or device groups based on their coverage needs and network conditions, rather than uniformly for all CIoT devices. The network can activate CE features for individual UEs or specific device groups, allowing extended coverage where needed while conserving radio resources in areas with adequate coverage.
Solution Approach 2:
The patent implements dynamics by making coverage enhancement activation dynamic and controllable by the network. The CE feature can be activated or deactivated based on real-time network load, device location, and coverage conditions. This dynamic control allows the system to adapt resource allocation to current network conditions, preventing congestion while maintaining extended coverage capability when necessary.
2Reliability
If coverage enhancement is activated for high network load scenarios, then priority users can access the network, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling devices to autonomously determine their coverage status and initiate appropriate access procedures. Devices can self-assess whether they are in extended coverage and automatically adjust their operation mode without requiring complex network configuration or manual intervention, simplifying the overall system while maintaining reliability.
Solution Approach 2:
The patent implements preliminary action by having devices pre-configured with coverage enhancement capabilities and authorization parameters. Before actual network access is needed, devices already have the necessary configurations in place, allowing them to quickly transition to extended coverage mode when required without complex real-time decision-making or configuration changes.
3Volume of moving object
If blind physical layer transmissions are used for extended coverage, then coverage range is extended, but battery consumption increases
Solution Approach 1:
The patent applies periodic action by using discontinuous reception (DRX) cycles and periodic transmission opportunities for devices in extended coverage. Instead of continuous transmissions, devices transmit and receive data at periodic intervals, significantly reducing battery consumption while maintaining extended coverage capability. The network can schedule periodic uplink transmissions and downlink receptions optimized for the device's coverage class.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting transmission parameters such as power level, transmission frequency, and repetition count based on the device's coverage class and channel conditions. Devices in extended coverage can use higher power or more repetitions when needed, while switching to lower power modes during idle periods, optimizing the balance between coverage range and battery consumption.
Data Source
AI summary
Network initiated re-authorization for coverage enhancement It is provided a method, comprising checking if a device is authorized for initiating an access in an extended coverage; inhibiting the device to initiate the access while the device camps in the extended coverage and the device is not authorized for the initiating of the access in the extended coverage; monitoring if a paging message for the device is received while the device camps in the extended coverage, wherein the paging message is to initiate a signaling access in the extended coverage for a signaling procedure to get the latest status of coverage authorization; allowing the device to initiate the signaling access while the device camps in the extended coverage if the paging message is received.