Dynamic Default Subcarrier Spacing Management in 5G Initial Access
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Solution Overview
Problem
In 5G networks, user equipment (UE) consumes additional power during initial access when the default subcarrier spacing (SCS) does not match the network-configured SCS for synchronization signals or physical broadcast channel blocks, leading to inefficient scanning and increased power usage.
Innovation Solution
The default SCS for synchronization signals or physical broadcast channel blocks is dynamically managed by storing the last successfully registered SCS value on a subscriber identity module (SIM) or universal integrated circuit card (UICC), allowing the network to update and configure the appropriate SCS via an over-the-air message, ensuring alignment with the network configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE scans for synchronization signals with a fixed default SCS, then the initial access procedure is simplified, but power consumption increases when the default SCS does not match the network-configured SCS
Solution Approach 1:
The patent applies dynamics by making the SCS value stored on the SIM/UICC dynamically updateable. The network can send over-the-air messages to update the SCS value on the card, allowing the system to adapt to changing network configurations. This resolves the contradiction by enabling the UE to use the correct default SCS (reducing power consumption) while maintaining the simplicity of having a stored default value (ease of operation).
Solution Approach 2:
The patent changes the parameter stored on the SIM/UICC from a static SCS value to a dynamic one that can be updated via over-the-air messages. This allows the default SCS parameter to be modified remotely to match current network configurations, thereby reducing power consumption during initial access while preserving the operational simplicity of using a stored default value.
2Use of energy by moving object
If the UE uses a stored default SCS value from SIM/UICC, then power consumption during initial access is reduced, but the system loses adaptability to network configuration changes
Solution Approach 1:
The patent implements feedback by allowing the network to send over-the-air messages that update the SCS value stored on the SIM/UICC. This feedback mechanism ensures that the stored default SCS value remains synchronized with current network configurations, maintaining adaptability while preserving the power consumption benefits of using a stored default value.
Solution Approach 2:
The system transitions from a static stored SCS value to a dynamic one that can be updated remotely. This dynamic capability allows the UE to adapt to network configuration changes while continuing to use the stored default value for initial access, thereby maintaining both low power consumption and network adaptability.
3Adaptability or versatility
If the network sends over-the-air messages to update SCS configuration, then network configuration adaptability is improved, but device complexity increases
Solution Approach 1:
The patent uses the SIM/UICC card as an intermediary to store and manage the SCS configuration. Instead of requiring complex device-level logic to handle configuration updates, the SIM/UICC acts as a mediator that stores the default SCS value and can be updated via simple over-the-air messages. This reduces device complexity while maintaining network configuration adaptability.
Solution Approach 2:
The patent extracts the SCS configuration management functionality from the main device logic and places it on the SIM/UICC card. This separation simplifies the device by offloading configuration storage and update operations to the card, reducing the computational burden and complexity of the main device while maintaining adaptability through remote updates.
Data Source
AI summary
In one embodiment, a method can comprise sending identification data representative of an identification of a base station device to a subscriber identity module. In response to the sending the identification data, the method can comprise receiving status data representative of a response from the subscriber identity module, and based on the receiving the status data, sending, fetch data representative of a command to be acquired from the subscriber identity module. Additionally, the method can comprise receiving, from the subscriber identity module, command data associated with the command to be performed by the mobile device. Furthermore, based on the receiving the command data, the method can comprise sending, to the base station device, response data representative of whether the command has been determined to have been performed.