Dynamic Paging Configuration for Radar Coexistence
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Solution Overview
Problem
Advanced network standards like 5G NR face challenges in operating optimally in congested and contested spectral environments, where transceivers are vulnerable to jamming and interfere with non-telecommunications devices such as radar systems that propagate energy in the same frequency bands.
Innovation Solution
Implementing methods for robust and efficient paging transmission and reception in 5G systems, including the RRC Suspend/Resume procedure, dynamic reconfiguration of paging configurations, and multiple PDCCH monitoring occasions per SSB, to mitigate interference with radar systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 5G NR networks operate in contested spectral environments with radar systems, then network coverage and service availability are improved, but interference vulnerability and transmission reliability deteriorate
Solution Approach 1:
The patent implements dynamic paging configuration where the network can switch between different paging occasions and configurations based on detected radar interference patterns. The gNB dynamically adjusts paging parameters including time offsets, frequency resources, and monitoring occasions to avoid radar pulses while maintaining reliable communication with UEs.
Solution Approach 2:
The patent changes physical layer parameters for paging transmissions including time domain offsets, frequency domain resources, and power levels. By modifying these parameters dynamically, the system adapts to radar interference conditions while maintaining paging functionality and network coverage.
2Adaptability or versatility
If paging transmissions are increased to maintain network coverage, then service availability is improved, but interference with radar systems worsens
Solution Approach 1:
The patent segments the paging transmission into multiple occasions distributed across different time and frequency resources. Instead of a single paging transmission, the system uses multiple paging occasions with different time offsets and frequency allocations, allowing some transmissions to succeed even when others collide with radar pulses.
Solution Approach 2:
The patent implements periodic paging transmissions with configurable periods and offsets. By spreading paging attempts across multiple periodic occasions, the system increases the probability of successful delivery while reducing peak interference any single transmission causes to radar systems.
3Reliability
If multiple PDCCH monitoring occasions are configured per SSB, then paging reliability is improved, but device complexity and processing overhead worsen
Solution Approach 1:
The patent configures multiple PDCCH monitoring occasions per SSB but allows the UE to monitor only a subset based on its capabilities and current conditions. The network can indicate which specific monitoring occasions are active, reducing the actual processing load on UEs while maintaining the reliability benefits of multiple monitoring opportunities.
Data Source
AI summary
A method of interference mitigation performed by a base station, the method comprising: receiving radar operation information; determining interference based on the radar operation information; and based on the interference determination, dynamically reconfiguring a paging configuration operated by the base station to minimize or eliminate an impact of the interference.