Beam Locking Across Non-RRC State for Accurate Power Testing
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Solution Overview
Problem
Conventional conformance testing methods cannot accurately measure transmit power of mobile terminal devices in a non-RRC connected state due to the deactivation of beam locking, which is only available in an RRC connected state.
Innovation Solution
A method to activate beam locking in a non-RRC connected state by sending a message from a network device to a terminal device, allowing the terminal device to maintain beam locking even when transitioning to a non-RRC state, ensuring stable data transmission and efficient testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam locking is activated in RRC connected state, then measurement precision is improved, but device complexity increases due to state management requirements
Solution Approach 1:
The network device activates beam locking in advance during the RRC connection establishment phase, before the terminal needs to perform conformance testing. This preliminary action ensures that when the terminal transitions to non-RRC connected state for testing, beam locking is already in place, eliminating the need for complex state management during testing operations.
Solution Approach 2:
The network device acts as an intermediary that manages beam locking activation independently of the terminal's RRC state. By controlling beam locking activation through network-side messages, the system decouples the beam locking mechanism from terminal state management, reducing the complexity at the terminal device while maintaining measurement precision.
2Device complexity
If beam locking is deactivated in non-RRC connected state, then device complexity is reduced, but measurement precision deteriorates due to beam switching
Solution Approach 1:
The beam locking mechanism is made dynamic by allowing it to be activated or deactivated based on the operational context. The network device can activate beam locking when conformance testing is needed, even in non-RRC connected state, and deactivate it when normal operation resumes. This dynamic control enables high measurement precision during testing without permanently increasing device complexity.
Solution Approach 2:
The system changes the operational parameter of beam locking from a static RRC-state-dependent setting to a dynamic message-controlled parameter. By using network device messages to activate beam locking in non-RRC connected state, the system can maintain measurement precision without being constrained by RRC connection state, effectively changing the controlling parameter from connection state to explicit activation command.
3Measurement precision
If beam locking is maintained across state transitions, then measurement precision is improved, but reliability decreases due to potential conflicts with state changes
Solution Approach 1:
The network device implements a feedback mechanism where it receives acknowledgment from the terminal device after activating beam locking. This feedback loop ensures that beam locking is successfully activated and maintained across state transitions. The feedback mechanism allows the network to verify the terminal's compliance and adjust the activation status if conflicts arise, thereby maintaining both measurement precision and reliability.
Data Source
AI summary
This application relates to a beam locking method, a network device, a computer-readable storage medium, and a computer program product. In the method, a terminal device receives a first message from a network device. The first message herein indicates the terminal device to activate beam locking in a non-radio resource control RRC connected state. Then, the terminal device sends a second message to the network device. The second message herein is used to acknowledge activation of the beam locking. In this manner, the beam locking in the non-RRC connected state is activated, so that the terminal device can lock an antenna mode of the terminal device when the terminal device is in the non-RRC connected state, and perform sending over a same beam, avoiding fluctuation of receive power measured by the network device.