Preconfigured Uplink Resource Validation via Broadcast Control Values
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In legacy LTE operations, base stations may be unaware of idle UEs with preconfigured uplink resources, leading to interference and performance issues if reset or updated, as UEs continue transmitting with outdated configurations.
Innovation Solution
A method where UEs receive a broadcast from the base station indicating whether to use preconfigured resource configurations, comparing a stored control value with a broadcasted control value to determine validity, and transmitting a disallow indication if the configuration is outdated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If UEs continue using preconfigured resource configurations after base station reset, then UE transmission continuity is maintained, but interference and system performance deteriorate
Solution Approach 1:
The base station broadcasts control values (valueTag, timestamp, or counter) that UEs compare with their stored configurations. This feedback mechanism allows the base station to inform UEs whether their preconfigured resources are still valid, enabling UEs to stop transmitting with outdated configurations and preventing interference while maintaining transmission continuity when valid.
Solution Approach 2:
The base station pre-configures UEs with preconfigured uplink resources (PUR) and associated control values before the UE enters idle mode. This preliminary configuration allows UEs to transmit without random access procedures, improving transmission continuity while the control values enable the base station to later invalidate these configurations after a reset, preventing interference.
2Object-affected harmful factors
If base station validates all PUR configurations after reset, then interference is prevented, but signaling overhead and complexity increase
Solution Approach 1:
Instead of validating entire PUR configurations, the base station extracts and broadcasts only the essential control values (valueTag, timestamp, or counter) that UEs need to compare with their stored configurations. This extraction approach prevents interference by enabling validation while minimizing signaling overhead and reducing complexity compared to full configuration validation.
3Reliability
If control values are frequently updated to prevent interference, then system reliability improves, but signaling overhead increases
Solution Approach 1:
The patent uses compact parameter representations for control values: a small valueTag field, a condensed timestamp, or an incremental counter. These parameter changes allow frequent updates of validation information with minimal signaling overhead, improving system reliability by enabling timely invalidation of outdated configurations while keeping the overhead low through efficient parameter encoding.
Data Source
AI summary
The present disclosure relates to telecommunications. In one of its aspects, the disclosure concerns a method, performed by a User Equipment (UE), in a communications network. The method comprises receiving a broadcast from a base station. The broadcast comprises an indication indicating whether the UE is allowed to use a preconfigured resource configuration associated with the UE. The method further comprises determining, based on the indication in the broadcast, whether the UE is allowed to use the preconfigured resource configuration.