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On August 9th, 2025, we received another EB-2 NIW (National Interest Waiver) approval for an Assistant Professor in the field of Wireless Communications (Approval Notice).
General Field: Wireless Communications
Position at the Time of Case Filing: Assistant Professor
Country of Origin: Bangladesh
State of Residence at the Time of Filing: Pennsylvania
Approval Notice Date: August 9th, 2025
Processing Time: 1 year, 5 months, 5 days (Premium Processing Requested)
Case Summary:
North America Immigration Law Group (NAILG) presented a proposed endeavor to analyze, allocate, and share limited radio spectrum more efficiently so that critical services and consumer networks can operate with fewer conflicts. The record links this work to U.S. priorities in 5G and future 6G, spectrum security, public-safety communications, and AI-enabled spectrum tools.
Research Focus and Contributions
- Interference analysis and mitigation: Built software-defined radio testbeds to characterize LTE–telemetry interactions and produced data-driven rules that prevent conflicts between adjacent bands used by commercial and mission-critical systems.
- Shared-spectrum strategies: Advanced LTE-U and Wi-Fi coexistence using deep-learning classification of RF signals on an SDR platform to coordinate channel access and reduce collisions.
- Guidelines and tools: Developed spectrum-usage ontologies and acceptance-test plans that translate lab findings into operational practices for cleaner, more reliable networks.
Research Impact and Metrics
- Peer-Reviewed Publications: 1 journal article and 4 peer-reviewed conference papers, plus 1 technical report.
- Citations: 11 independent citations, including uptake in aeronautical telemetry studies.
- Recognition & Support: supported spectrum work referenced in the record, evidencing national relevance and real-world utility. His research has been supported with funding from the S. Department of Defense (DOD). This funding is reserved solely for research directed at advancing the national interest, including studies that “ensure our nation’s security”.
Here is an anonymized excerpt from a recommendation letter that underscores the practical impact of his work:
“[Client] tackles a core challenge in wireless communications: precise radio-signal classification to enable efficient spectrum allocation and reduce interference. In a notable study on LTE-U and Wi-Fi coexistence in the crowded 6 GHz subcarrier bands, [client] built a software-defined-radio testbed and applied deep-learning (convolutional-neural-network) techniques with transfer learning, accounting for varying SNR and noise uncertainty during real-world testing. This work produced an effective system to differentiate LTE-U and Wi-Fi signals, supporting harmonious operation and better utilization of limited spectrum resources. The outcomes, reflected in publications and independent citations, benefit service providers and end users by making wireless networks more efficient and reliable.”
Demonstrating Substantial Merit and National Importance
We showed substantial merit by tying the research to reduced interference, higher network reliability, and safer operations across telemetry, LTE/5G, and Wi-Fi. National importance was established through independent adoption of the client’s findings, alignment with federally recognized critical and emerging technologies, and references in the record to defense-related support for spectrum work.
Well Positioned to Advance the Proposed Endeavor
With a Ph.D. in a directly related STEM field, hands-on SDR engineering experience, and a continuing U.S. research role, the client is well-positioned to expand AI-assisted spectrum sensing, coexistence protocols, and compliance tools that benefit public-safety and commercial networks. Expert letters in the record attest to recognized expertise and practical impact.
NIW Approval and Outlook
Approved in 1 year, 5 months, and 5 days, this NIW recognizes a research agenda that strengthens U.S. connectivity by improving spectrum sharing and interference mitigation. NAILG is proud to have guided this case and looks forward to the client’s continued contributions to safer, faster, and more reliable American wireless networks.
North America Immigration Law Group (Chen Immigration Law Associates) is a U.S. immigration law firm dedicated to representing corporations, research institutions, and individuals from all 50 U.S. states regarding I-140 immigration petitions. We specialize in employment-based immigration petition and have a proven record of high success rate for the categories of: EB2-NIW (National Interest Waiver), EB1-A (Alien of Extraordinary Ability), EB1-B (Outstanding Researcher/Professor) and O-1 (Alien of Extraordinary Ability).
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