Random Access Resource Feedback for Beam Failure Recovery
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Solution Overview
Problem
In 5G mobile communication systems, the activation and deactivation of random access resources for beam failure recovery can lead to miscommunication between network devices and user equipment, resulting in resource wastage and conflicts during the random access procedure due to unsuccessful transmission of activation or deactivation commands.
Innovation Solution
A feedback mechanism is implemented where user equipment (UE) receives indication information from the network device about the availability of random access resources and sends acknowledgment information back, ensuring both parties have a consistent understanding of resource availability, thereby preventing resource wastage and enabling effective beam failure recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If activation or deactivation commands of RACH resources are transmitted without feedback confirmation, then the command transmission is simple and quick, but miscommunication between network device and UE occurs resulting in resource wastage and conflicts
Solution Approach 1:
The patent implements a feedback mechanism where UE sends acknowledgment information to the network device to confirm receipt of activation or deactivation commands. When UE receives an activation command, it sends an acknowledgment; when it receives a deactivation command, it sends a negative acknowledgment. The network device waits for this feedback before considering the command executed, ensuring both parties have consistent understanding of RACH resource availability and preventing resource conflicts.
2Reliability
If RACH resources are continuously allocated for beam failure recovery, then beam failure recovery capability is maintained, but resource wastage occurs when resources are not needed
Solution Approach 1:
The patent makes RACH resource allocation dynamic through activation and deactivation commands. The network device can activate RACH resources when beam failure recovery is needed and deactivate them when not needed. This dynamic allocation allows the system to maintain beam failure recovery capability only when necessary, preventing resource wastage while ensuring reliability when required.
Solution Approach 2:
The patent changes the availability status parameter of RACH resources from static to controllable states. By using activation commands to change resources from unavailable to available state, and deactivation commands to change from available to unavailable state, the system optimizes resource utilization based on actual beam failure recovery needs.
3Loss of energy
If RACH resources are deactivated to save resources, then resource utilization efficiency improves, but beam failure recovery cannot be performed when needed
Solution Approach 1:
The patent allows the network device to pre-allocate RACH resources and keep them in an activated state in advance, so that when beam failure occurs, UE can immediately use these pre-prepared resources for recovery without waiting for allocation. This preliminary preparation ensures beam failure recovery availability while the network device can later deactivate resources that remain unused to improve efficiency.
Data Source
AI summary
The present disclosure provides a random access resource processing method and device. The method includes: receiving first indication information from a network device, where the first indication information is used to indicate whether a preset random access resource is available; and transmitting first acknowledgment information to the network device.