Bandwidth Part Configuration for Low-Latency Small Data Transmission
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing bandwidth parts (BWPs) during small data transmissions, leading to suboptimal resource utilization and increased latency in RRC idle or inactive states.
Innovation Solution
The implementation of a suspend configuration for bandwidth parts (BWPs) in RRC release messages, allowing wireless devices to transmit small data in RRC idle or inactive states, followed by a subsequent configuration for further data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth parts are managed using existing wireless communication systems, then resource allocation is maintained, but resource utilization is suboptimal and latency increases during small data transmissions
Solution Approach 1:
The network configures suspend bandwidth parts in advance via RRC release messages before the wireless device enters idle or inactive state. This preliminary configuration allows the device to immediately resume data transmission without waiting for full BWP setup, thereby reducing latency while optimizing resource utilization during small data transmissions
2Loss of time
If bandwidth parts are configured for small data transmissions in RRC idle or inactive states, then latency is reduced, but system complexity increases
Solution Approach 1:
The patent extracts and separates suspend BWP configuration from the complete BWP configuration process. By configuring only essential suspend BWP parameters in advance through RRC release messages, the system reduces the complexity of full BWP management while still achieving low-latency resumption for small data transmissions
3Productivity
If suspend configuration is implemented in RRC release messages, then resource allocation is optimized, but message overhead increases
Solution Approach 1:
The patent applies partial action by configuring only the necessary suspend BWP parameters in RRC release messages rather than complete BWP configurations. This selective approach optimizes resource allocation for small data transmissions while minimizing the increase in message overhead by including only essential configuration elements
Data Source
AI summary
A wireless device comprises one or more processors and memory storing instructions that, when executed by the one or more processors, cause the wireless device to receive, from a base station, a first radio resource control (RRC) release message comprising a suspend configuration associated with one or more first bandwidth parts (BWPs). While the wireless device is in an RRC idle state or an RRC inactive state, the one or more processors, cause the wireless device to transmit, based on the suspend configuration. first data associated with a small data transmission (SDT) procedure. The one or more processors cause the wireless device to receive, from the base station, a second RRC release message comprising a subsequent configuration associated with one or more second BWPs, and receive, from the base station via the one or more second BWPs, based on the subsequent configuration, second data associated with the SDT procedure.