BWP Switch Request Validation for Reliable UE Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication networks experience interference and congestion, leading to inefficient bandwidth part (BWP) switching that results in reception time loss and communication failures due to invalid BWP switch requests.
Innovation Solution
A user equipment (UE) validates BWP switch requests by checking the validity of DCI fields before executing a switch, maintaining the current BWP upon detecting invalid fields, and generating error information for invalid fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the UE switches BWP based on BWP switch request without validating DCI fields, then BWP switching responsiveness is improved, but communication reliability deteriorates due to invalid switches causing reception time loss
Solution Approach 1:
The UE performs preliminary validation of DCI fields (first field and second field) before executing the BWP switch. This preliminary action checks whether the DCI indicates a valid BWP switch request by validating field values against configured parameters, preventing invalid switches that would cause reception time loss and communication failures.
Solution Approach 2:
The UE provides feedback by generating error information when invalid BWP switch requests are detected. This feedback mechanism allows the system to identify and respond to invalid DCI fields, preventing erroneous BWP switches and maintaining communication reliability while still enabling responsive switching when valid requests are received.
2Reliability
If the UE validates DCI fields before BWP switch, then communication reliability is improved, but switching speed deteriorates due to additional validation time
Solution Approach 1:
The validation of DCI fields is performed as a preliminary action before the BWP switch execution. The UE checks the first field and second field values against configured parameters in advance, ensuring that only valid switch requests are executed. This preliminary validation prevents unreliable switches while maintaining efficient switching performance for valid requests.
3Adaptability or versatility
If redundant BWP switching occurs due to invalid requests, then network adaptability is improved, but reception time loss increases
Solution Approach 1:
The UE generates error information when invalid BWP switch requests are detected, providing feedback to the network about the invalidity of the request. This feedback mechanism prevents redundant switching cycles (request-acknowledge-reject) that would cause reception time loss, while still allowing the network to adapt to legitimate BWP switching needs.
Solution Approach 2:
The validation mechanism converts potentially harmful invalid switch requests into beneficial error information generation. Instead of executing invalid switches that cause reception time loss, the UE identifies and reports the invalidity, allowing the network to correct the issue and maintain reliable communication while preserving adaptability for valid switching scenarios.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support a bandwidth part (BWP) switch request. In a first aspect, a method of wireless communication includes receiving downlink control information (DCI) that indicates a BWP switch request. The method also includes, prior to execution of a BWP switch based on the BWP request, determining whether a first value of a first field of the DCI is valid. Other aspects and features are also claimed and described.