Multi-TRP Bandwidth Part Switching With Coordinated Timer Control
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Solution Overview
Problem
Existing wireless communication systems are limited in efficiently managing bandwidth part (BWP) configuration switching for multiple transceiver nodes, particularly in scenarios involving multiple transmission reception points (TRPs), leading to inefficiencies and potential communication gaps during transitions.
Innovation Solution
A user equipment (UE) identifies a transceiver node cluster and coordinates BWP configurations across multiple transceiver nodes using control messages, employing timers to manage transitions between BWP configurations, ensuring coordinated and seamless switching without communication gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BWP configuration switching is implemented for multiple transceiver nodes, then system performance and coordination efficiency are improved, but device complexity and control overhead increase
Solution Approach 1:
The patent combines BWP configuration management for multiple transceiver nodes into a unified control mechanism. The network device generates a single first indication information that simultaneously configures BWP settings across multiple transceiver nodes, eliminating the need for separate control messages for each node and reducing overall control overhead.
Solution Approach 2:
The indication information structure is designed to serve multiple transceiver nodes universally. A single indication message can configure BWP parameters for a plurality of transceiver nodes, making the control mechanism multi-functional and applicable to various multi-node scenarios without requiring node-specific customization.
2Reliability
If separate BWP configurations are maintained for each transceiver node, then communication reliability is improved, but switching coordination and timing synchronization deteriorate
Solution Approach 1:
The patent merges the BWP configuration state across multiple transceiver nodes by using a single indication message that simultaneously updates all nodes. This ensures that all transceiver nodes transition to the same BWP configuration at the same time, maintaining switching coordination while preserving communication reliability through unified control.
3Loss of time
If BWP switching is performed for all transceiver nodes simultaneously, then communication gaps are reduced, but control signaling overhead increases
Solution Approach 1:
The patent combines multiple control signaling operations into a single indication message. Instead of sending separate switching commands to each transceiver node (which would create multiple communication gaps and high overhead), the network device generates one unified indication that triggers simultaneous BWP switching across all nodes, eliminating communication gaps while minimizing signaling overhead.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. A first transceiver node of a set of transceiver nodes may transmit a control message (e.g., downlink control information (DCI)) to a user equipment (UE). Upon receiving the control message, the UE may switch from a first bandwidth part (BWP) configuration for the first transceiver node to a second BWP configuration for the first transceiver node. Additionally, the UE may switch from BWP configurations for other transceiver nodes of the set of transceiver nodes. Upon switching from the first BWP configuration, the UE may start a timer and may switch from the second BWP configuration to a third BWP configuration upon expiration of the timer. The timer may be restarted each time the UE receives a communication from any of the set of transceiver nodes, a subset of the set of transceiver nodes, or from the first transceiver node.