Uplink Resource Allocation for Inactive UE Feedback
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Solution Overview
Problem
In 5th-Generation mobile communication, existing methods for feeding back messages from user equipment (UE) in an inactive state are inefficient, requiring unnecessary signaling interactions and resource allocation processes, which increase latency and overhead.
Innovation Solution
A method where a base station allocates an uplink resource to the UE based on the service type of transaction data, including configuration information for a resource block (RB) and sub-frame location, allowing the UE to transmit feedback messages directly on the allocated resource, thereby streamlining the feedback process and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits transaction data to the UE in inactive state and the UE initiates a random access request to trigger a random access process for allocating uplink resources, then the UE can transmit feedback messages, but the process involves unnecessary signaling interactions and increases latency and overhead
Solution Approach 1:
The base station performs preliminary action by pre-configuring uplink resources and providing configuration information to the UE before the UE needs to send feedback messages. This allows the UE to directly transmit feedback on the pre-allocated resources without initiating a random access process, thereby reducing latency and eliminating unnecessary signaling interactions while ensuring reliable feedback transmission
2Reliability
If the base station transmits transaction data to the UE in inactive state and the UE initiates a random access request to trigger a random access process for allocating uplink resources, then the UE can transmit feedback messages, but the process involves unnecessary signaling interactions and increases overhead
Solution Approach 1:
The base station performs preliminary action by pre-configuring uplink resources and providing configuration information to the UE before the UE needs to send feedback messages. This allows the UE to directly transmit feedback on the pre-allocated resources without initiating a random access process, thereby reducing latency and eliminating unnecessary signaling interactions while ensuring reliable feedback transmission
Solution Approach 2:
The invention extracts and eliminates the unnecessary random access signaling process from the feedback transmission path. By directly allocating uplink resources and providing configuration information to the UE in inactive state, the patent removes the intermediate random access steps (preamble transmission, random access response, contention resolution) that contribute to signaling overhead, keeping only the essential feedback message transmission
3Productivity
If the base station allocates uplink resources by transmitting configuration information including RB and sub-frame location, then the UE can directly transmit feedback messages on the allocated resource, but this requires the base station to manage additional resource allocation information
Solution Approach 1:
The base station leverages its existing multi-functional capabilities to handle both data transmission and resource allocation management. The configuration information containing RB and sub-frame location details is integrated into the existing downlink transmission framework, allowing the base station to simultaneously perform data delivery and uplink resource configuration without requiring separate dedicated management systems, thus achieving high feedback efficiency while utilizing existing infrastructure
Data Source
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AI summary
Provided are a method and a device for feeding back a message, a base station, and a user equipment, which belong to the field of communication. The method includes: acquiring transaction data to be transmitted to a UE when the UE is in an inactive state; allocating an uplink resource to the UE according to a service type of the transaction data, when one or more feedback messages from the UE are required for the transaction data; and transmitting a specified message to the UE. The specified message includes the transaction data and configuration information of the uplink resource. The UE transmits the one or more feedback messages on the uplink resource according to the configuration information.