Network-Controlled Repeater BFR State Management
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Solution Overview
Problem
Wireless repeaters experience ambiguity regarding their forwarding functionality state after a beam failure recovery (BFR) procedure, leading to potential communication failures, system interference, and reduced spectral efficiency due to unclear reconfiguration of directional beams.
Innovation Solution
Implementing signaling- or configuration-based mechanisms that allow wireless repeaters to set their forwarding functionality to either an ON or OFF state based on the BFR procedure, ensuring synchronization with the network entity and reducing ambiguity by starting a timer or receiving explicit indications for reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the wireless repeater performs BFR procedure autonomously without explicit network control, then the recovery speed is improved, but the forwarding functionality state becomes ambiguous and communication failures increase
Solution Approach 1:
The network entity provides feedback to the wireless repeater through control signaling to explicitly indicate the forwarding functionality state after BFR. This feedback mechanism resolves the state ambiguity that would otherwise occur with autonomous BFR, ensuring the repeater operates in the correct state while maintaining fast recovery speed.
Solution Approach 2:
Control signaling acts as an intermediary between the network entity and wireless repeater to convey the forwarding functionality state. This intermediary communication channel ensures that the repeater receives explicit state information from the network, preventing ambiguity while preserving autonomous BFR capabilities.
2Productivity
If the wireless repeater continues forwarding communications after BFR without explicit indication, then the productivity is improved, but the system interference increases due to potential state mismatch
Solution Approach 1:
The network entity sends control signaling to provide feedback on the forwarding functionality state, allowing the repeater to determine whether to continue forwarding. This ensures productivity is maintained when appropriate while preventing system interference caused by state mismatch through explicit network guidance.
Solution Approach 2:
The forwarding functionality state is made dynamic and adjustable based on network conditions and BFR outcomes. The repeater can transition between forwarding and non-forwarding states according to explicit network indications, optimizing productivity while minimizing harmful interference through adaptive behavior.
3Object-generated harmful factors
If the wireless repeater sets forwarding functionality to OFF state after BFR, then the system interference is reduced, but the loss of time increases due to reconfiguration delays
Solution Approach 1:
The forwarding functionality state is dynamically controlled based on explicit network indications received through control signaling. The network can instruct the repeater to switch between ON and OFF states as needed, reducing system interference when appropriate while minimizing time loss through efficient state transitions guided by network knowledge of current system conditions.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some aspects, a wireless repeater, such as a network-controlled repeater (NCR), and a network entity may support one or more signaling- or configuration-based mechanisms according to which the wireless repeater is able to set a forwarding functionality of the wireless repeater to either an ON state or an OFF state based on a beam failure recovery (BFR) procedure. For example, upon recovery of communications between the wireless repeater and the network entity in accordance with the BFR procedure, the wireless repeater and the network entity may determine whether the forwarding functionality of the wireless repeater is to remain in an OFF state and, if so, for what time duration the forwarding functionality of the wireless repeater is to remain in the OFF state after the BFR procedure.