Bandwidth Part Reconfiguration for Low-Latency Small Data Transfer
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing bandwidth parts (BWPs) to optimize data transmission and reduce latency, particularly in heterogeneous networks with varying traffic loads and device capabilities.
Innovation Solution
Implementing a flexible BWP configuration mechanism that adapts to traffic conditions and device capabilities, allowing dynamic switching between multiple BWPs to optimize resource allocation and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed bandwidth part configuration is used, then device complexity is reduced and ease of operation is improved, but adaptability to varying traffic conditions and device capabilities deteriorates
Solution Approach 1:
The patent implements dynamic BWP configuration where the network can assign different bandwidth parts to UEs based on real-time traffic conditions, device capabilities, and network load. This allows the system to adapt flexibly without requiring complex manual configuration, resolving the contradiction between adaptability and complexity through automated dynamic adjustment.
Solution Approach 2:
The patent changes BWP parameters (bandwidth size, frequency location, subcarrier spacing) dynamically based on traffic requirements and device capabilities. By allowing parameter changes rather than fixed configuration, the system achieves high adaptability while the network manages the complexity, preventing it from burdening the UE.
2Productivity
If bandwidth part switching is implemented to optimize resource allocation, then productivity and data transmission efficiency are improved, but loss of time due to switching overhead increases
Solution Approach 1:
The patent pre-configures multiple bandwidth parts and their parameters in advance, so that when switching is needed, the UE can quickly activate a pre-prepared BWP configuration rather than calculating and setting up a new one. This preliminary preparation significantly reduces switching time while maintaining the ability to optimize resource allocation.
Solution Approach 2:
The patent applies different BWP configurations locally optimized for specific traffic types (e.g., wide bandwidth for high-rate data, narrow bandwidth for control signaling). This local optimization improves overall system productivity by matching resource allocation to actual needs, while the network manages switching to minimize time loss.
3Adaptability or versatility
If multiple bandwidth parts are configured for different device capabilities, then adaptability to heterogeneous devices is improved, but device complexity and configuration difficulty increase
Solution Approach 1:
The patent enables UEs to self-identify their capabilities (bandwidth support, processing power) and automatically receive appropriate BWP configurations from the network. This self-service approach allows heterogeneous device support without requiring complex manual configuration, as each device autonomously receives optimized settings based on its own characteristics.
Solution Approach 2:
The patent creates a universal BWP configuration framework that can serve diverse device types through a standardized interface. The network manages the complexity of supporting heterogeneous devices by providing a unified configuration mechanism that adapts to different device capabilities, making the system easy to operate while maintaining broad compatibility.
4Loss of energy
If bandwidth adaptation is implemented to match traffic load, then loss of energy is reduced by avoiding unnecessary transmissions, but device complexity and control overhead increase
Solution Approach 1:
The patent implements feedback mechanisms where UEs report their buffer status, traffic patterns, and energy constraints to the network. The network uses this feedback to dynamically adjust BWP assignments, enabling energy-efficient bandwidth adaptation without requiring complex local decision-making at the UE. The feedback loop allows the network to manage the complexity centrally while achieving energy savings at the device level.
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.