Autonomous BWP Switching for Low-Latency UE Transmissions
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Solution Overview
Problem
Existing wireless communication technologies face issues with BWP switching latency and network control during autonomous BWP transitions, particularly in delay-sensitive communications, leading to potential disruptions and increased latency for critical services.
Innovation Solution
A method and UE implementation that allows the UE to obtain a configuration from the network for autonomous BWP switching, enabling controlled transmissions in the target BWP by detecting trigger events and initiating a BWP switch request, allowing immediate communication in the new BWP while ensuring network control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the UE autonomously switches BWP without network control, then BWP switching speed is improved, but transmission reliability deteriorates due to potential disruptions
Solution Approach 1:
The network pre-configures the UE with multiple BWPs and switching criteria before autonomous switching is needed. This allows the UE to quickly switch BWPs based on pre-established rules without real-time network intervention, improving switching speed while maintaining reliability through pre-planned configurations
Solution Approach 2:
The UE monitors transmission status and channel conditions, providing feedback to determine when autonomous BWP switching should occur. This feedback mechanism ensures switching happens only when appropriate, maintaining transmission reliability while enabling fast autonomous switching when needed
2Reliability
If the UE waits for network confirmation before switching BWP, then transmission reliability is improved, but switching latency increases
Solution Approach 1:
The network provides pre-configuration including multiple BWP parameters and switching criteria in advance. This preliminary setup enables the UE to perform autonomous switching without waiting for real-time network confirmation, reducing latency while maintaining reliability through pre-validating configurations
Solution Approach 2:
The UE is empowered to autonomously monitor its own transmission status and channel conditions, and independently decide when to switch BWPs based on pre-configured criteria. This self-service capability eliminates network confirmation delays while maintaining reliable operation through built-in monitoring and decision-making
3Use of energy by moving object
If the UE uses a narrower BWP, then energy consumption is reduced, but data transmission capability deteriorates
Solution Approach 1:
The system dynamically adjusts BWP width based on real-time transmission requirements and channel conditions. The UE can switch between narrower BWPs for energy efficiency during low-traffic periods and wider BWPs for higher data rates when needed, optimizing both energy consumption and transmission capability
Solution Approach 2:
The network configures multiple BWPs with different bandwidth parameters, and the UE switches between them based on traffic demands. This parameter change strategy allows the system to adapt BWP width dynamically, balancing energy consumption against data transmission capability according to actual needs
Data Source
AI summary
A method and a User Equipment, UE, for handling multiple Bandwidth Parts, BWPs, when being connected to a wireless network. The UE is configured to obtain from the network a configuration for use when autonomously switching from a source BWP to a target BWP, said configuration indicating one or more transmissions that the UE can start in the target BWP during a BWP switch. When detecting that the UE is subjected to a trigger event in the source BWP, wherein the trigger event triggers an autonomous BWP switch, the UE transmits to the network in the target BWP a BWP switch request, and the UE also performs at least one further transmission indicated by the obtained configuration.