Uplink Resource Allocation for Inactive User Equipment
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Solution Overview
Problem
In 5G mobile communication, user equipment (UE) in an inactive state faces challenges in efficiently allocating uplink resources for data transmission, leading to inefficiencies and increased signaling overhead due to the need for frequent random access processes when new data is generated.
Innovation Solution
A resource allocation method that triggers a buffer status report (BSR) event when new data is generated, allowing the UE to send an updated BSR using available uplink resources or requested resources, enabling the base station to continue allocating resources without initiating a random access process, thereby improving efficiency and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE in inactive state uses traditional random access process to request uplink resources when new data is generated, then uplink resources can be allocated, but signaling overhead increases and resource allocation efficiency decreases
Solution Approach 1:
The base station pre-allocates uplink resources and configures BSR event triggering conditions to the UE before the UE needs to transmit data. When new data arrives, the UE can immediately use the pre-configured resources if the BSR conditions are met, avoiding the need to initiate a random access process. This preliminary configuration enables efficient resource utilization without frequent signaling exchanges.
Solution Approach 2:
The patent implements a feedback mechanism where the UE monitors whether newly arrived data triggers a BSR event based on pre-configured conditions. When triggered, the UE sends a BSR report to the base station using available uplink resources, providing feedback about its buffer status. The base station then adjusts resource allocation based on this feedback, creating a closed-loop system that optimizes resource distribution without requiring full random access procedures.
2Reliability
If UE frequently initiates random access processes to send BSR reports, then uplink resource allocation can be updated, but transmission delay increases
Solution Approach 1:
The base station performs preliminary actions by pre-configuring uplink resources and BSR triggering conditions before the UE needs to transmit data. This allows the UE to quickly determine whether new data should trigger a BSR report and immediately use available resources if conditions are met, significantly reducing the time delay compared to initiating full random access processes.
Solution Approach 2:
Instead of requiring complete random access procedures for every BSR report, the patent allows the UE to perform partial actions by sending BSR reports using pre-configured uplink resources when BSR triggering conditions are met. This partial action approach maintains resource allocation accuracy while minimizing transmission delay by avoiding unnecessary full random access sequences.
3Productivity
If UE sends BSR reports using pre-configured uplink resources, then resource allocation efficiency improves, but resource waste occurs when resources are not fully utilized
Solution Approach 1:
The patent implements dynamic resource management where the base station continuously monitors BSR reports from UEs and adjusts uplink resource allocation in real-time. When UEs send BSR reports using pre-configured resources, the base station updates the resource allocation to match actual data transmission needs, releasing unused resources for other UEs. This dynamic adjustment prevents resource waste while maintaining the efficiency benefits of pre-configured resources.
Solution Approach 2:
The BSR reporting mechanism provides continuous feedback to the base station about UE buffer status and resource utilization. The base station uses this feedback to dynamically adjust resource allocation, ensuring that pre-configured resources are fully utilized when needed and released when not needed, thereby preventing resource waste while maintaining high allocation efficiency.
Data Source
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AI summary
The present disclosure provides a resource allocation method, a resource allocation device, a user equipment and a base station, belonging to a communication technology field. The method includes: in an inactive state, triggering a BSR event to send a second BSR to a base station when business data to be sent to a base station are generated after a first BSR is sent to the base station; (101, 306) when detecting that a first uplink resource is available, sending the second BSR and cached first business data to the base station using the first uplink resource; (102, 307) otherwise, sending a SR to the base station according to at least one SR resource allocated by the base station (103, 309); and sending the second BSR and the first business data to the base station based on the second uplink resource (104, 311). When the new business data is generated, an updated BSR can be sent to the base station timely according to available uplink resource or uplink resource requested according to the SR resource allocated by the base station, so that the base station can continue to allocate uplink resource for the UE according to the updated BSR, thereby improving efficiency of resource allocation and reducing signaling overhead.