Intra-Device Interference Management with BWP/PRB Granularity
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Solution Overview
Problem
Current wireless communication systems face challenges in managing intra-device interference (IDC) due to the lack of granular indication of affected frequencies, leading to inefficient handling of interference between multiple radio transceivers within a device, such as LTE, GPS, Bluetooth, and Wi-Fi, using existing frequency division multiplexing (FDM) solutions.
Innovation Solution
Enhanced IDC frequency division multiplexing (FDM) solutions that allow more granular indication of affected frequencies at the bandwidth part (BWP) or physical resource block (PRB) level, enabling devices to report affected or unaffected BWPs/PRBs, and allowing networks to perform BWP switching or reconfiguration to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing frequency division multiplexing (FDM) solutions are used to manage intra-device interference, then interference between multiple radio transceivers can be handled, but the indication of affected frequencies lacks granularity, leading to inefficient interference management
Solution Approach 1:
The patent segments the frequency spectrum into bandwidth parts (BWPs) and further into physical resource blocks (PRBs), allowing granular indication of affected frequencies. Instead of treating the entire spectrum as a single unit, the system divides it into manageable segments that can be individually reported and managed, enabling precise identification of interfered frequency resources while maintaining systematic control.
2Reliability
If granular indication of affected frequencies at BWP or PRB level is implemented, then interference management precision is improved, but the complexity of reporting and reconfiguration increases
Solution Approach 1:
The patent introduces a hierarchical dimension to frequency resource management by organizing PRBs within BWPs, which are themselves within carrier frequencies. This multi-level hierarchical structure allows the system to manage granular frequency resources through organized layers, making complex interference management more systematic and tractable through structured hierarchy.
3Productivity
If networks perform BWP switching or reconfiguration to mitigate interference, then communication efficiency is improved, but the time and signaling overhead increase
Solution Approach 1:
The patent enables preliminary identification and reporting of affected frequency resources through uplink assistance information, allowing the network to proactively configure appropriate BWPs and PRBs before interference occurs. By preparing frequency resource configurations in advance based on reported interference patterns, the system can quickly switch to pre-configured resources when interference is detected, minimizing reconfiguration time and signaling overhead.
Data Source
AI summary
Methods, system, apparatus for wireless communication include a method of wireless communication includes receiving, by a network device, a report from a wireless device indicative of usability of radio frequency (RF) resources configured for communication with the wireless device and transmitting, by the network device to the wireless device, a reconfiguration command according to the report.