Dynamic BWP Switching for 5G Resource Allocation
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Solution Overview
Problem
Current 5G NR networks face inefficiencies in downlink resource allocation due to the lack of fast and low-overhead switching between Type 0 and Type 1 allocation schemes, particularly when handling varying packet sizes, leading to spectrum inefficiency and increased interference.
Innovation Solution
Implementing a method that configures a wireless device with multiple bandwidth parts (BWP) of different resource allocation types and dynamically switches between them based on traffic conditions, such as packet size, to optimize resource allocation and reduce overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single resource allocation type is used for all traffic conditions, then device complexity is reduced, but spectral efficiency deteriorates due to inability to adapt to varying packet sizes
Solution Approach 1:
The patent segments the downlink bandwidth into multiple Bandwidth Parts (BWPs), each configured with a specific resource allocation type (Type 0 or Type 1). This allows the network to divide the frequency spectrum into distinct segments, each optimized for different traffic conditions, thereby achieving adaptability without requiring the entire system to be complex.
Solution Approach 2:
The patent implements dynamic BWP switching mechanisms that allow the network to transition between different bandwidth parts based on real-time traffic conditions. The gNodeB can switch between BWPs configured with different allocation types, and UEs can be dynamically configured to use different BWPs, enabling the system to adapt to varying packet sizes and traffic patterns while maintaining manageable complexity through standardized switching procedures.
2Productivity
If fast switching between resource allocation types is implemented, then spectral efficiency is improved, but overhead increases due to frequent configuration changes
Solution Approach 1:
The patent configures multiple BWPs with different resource allocation types in advance before actual traffic conditions require switching. The gNodeB pre-configures BWPs with appropriate allocation types (Type 0 for large packets, Type 1 for small packets), so when traffic conditions change, the system can switch between pre-existing configurations rather than creating new ones, reducing overhead.
Solution Approach 2:
The patent uses standardized BWP configuration templates and patterns that allow the network to replicate proven configurations. Instead of creating entirely new allocation configurations each time, the system copies and reuses established BWP configurations with different allocation types, minimizing the overhead associated with configuration changes while maintaining fast switching capability.
3Productivity
If resource allocation is optimized for large packets, then throughput is improved, but efficiency deteriorates when handling small packets due to wasted resources
Solution Approach 1:
The patent applies different resource allocation characteristics to different local segments (BWPs) of the downlink bandwidth. Certain BWPs are configured with Type 0 allocation (optimized for large packets with larger RBG sizes) while others use Type 1 allocation (optimized for small packets with smaller RBG sizes). This allows each local segment to have quality characteristics matched to its intended traffic pattern, improving overall system efficiency.
Data Source
AI summary
Systems, methods, and processing nodes for managing network resources perform and/or comprise: configuring a first bandwidth part (BWP) and a second BWP for a wireless device, wherein the wireless device is configured to communicate with an access node over the first BWP, wherein the first BWP has a first resource allocation type and the second BWP has a second resource allocation type; setting a traffic condition; monitoring a traffic parameter for communications between the wireless device and the access node; and in response to a determination that the traffic parameter meets the traffic condition, instructing the wireless device to switch from communication with the access node over the first BWP to communication with the access node over the second BWP.