In the digital era, enhancing wireless connectivity is vital for systems’ accurate and efficient functioning. Working on a smart system to catalyse seamless wireless connectivity, Dr Dimpal Janu, Assistant Professor from the Department of Electronics and Communication Engineering, has published a paper “MASSFormer: Mobility-Aware Spectrum Sensing using Transformer-Driven Tiered Structure” in the Q1 journal IEEE Communications Letters. She has developed a novel cooperative spectrum sensing method based on MASSFormer that uses artificial intelligence, specifically a transformer model, to decide when to use a communication channel without causing interference.

Abstract

We develop a novel mobility-aware transformer-driven tiered structure (MASSFormer) based cooperative spectrum sensing method that effectively models the spatio-temporal dynamics of user movements. Unlike existing methods, our method considers a dynamic scenario involving mobile primary users (PUs) and secondary users (SUs) and addresses the complexities introduced by user mobility. The transformer architecture utilises an attention mechanism, allowing the proposed method to model the temporal dynamics of user mobility by effectively capturing long-range dependencies. The proposed method first computes tokens from the sequence of covariance matrices (CMs) for each SU. It processes them in parallel using the SU-transformer to learn the spatio-temporal features at the SU-level. Subsequently, the collaborative transformer learns the group-level PU state from all SU-level feature representations. The main goal of predicting the PU states at each SU-level and group-level is to improve detection performance even more. The proposed method is tested under imperfect reporting channel scenarios to show robustness. The efficacy of our method is validated with simulation results that demonstrate its higher performance compared to existing methods in terms of detection probability Pd, sensing error, and classification accuracy (CA).

Practical Implementation of Research

Smart cities & IoT Networks:

• MASSFormer enables intelligent spectrum sharing among a multitude of IoT devices in urban environments.
• It improves communication reliability in crowded and mobile settings, such as vehicular networks, smart traffic systems, or surveillance setups.

Social Implications of Research

MASSFormer is built to handle the mobility of users, which is essential in rural, remote, or developing areas where users often access the internet via mobile networks rather than fixed infrastructure. By enabling more efficient use of existing spectrum, the method helps extend internet access to remote and underserved regions, supporting education, healthcare, and economic development.

Future Research Plans

1. Planning to develop hybrid models that blend classical detection with neural inference for improved interpretability and reliability.
2. Use of federated learning so that SUs can collaboratively train models without sharing raw data.

Link to the article

Fig 1. MASSFormer Architecture

Mathrubhumi

SRM University-AP concluded the second edition of the prestigious four-week intensive Annual Foundation School for Students of Mathematics. The programme, hosted in collaboration with the National Centre for Mathematics, a joint centre of TIRF and IIT, saw 31 students from various Indian universities participate.

The participants were primarily PhD Scholars from universities like IIT Delhi, IISER Tirupathi, IIT Bombay, Jadavpur University, Ashoka University and Kannur University, to name a few. The main objective of the Foundational School was to offer training in fundamental mathematical concepts to Ph.D. scholars, emerging Researchers, and educators.

The four-week intensive training commenced on May 12, 2025, in the presence of Dean-SEAS, Prof. C V Tomy; Head of the Department, Prof. Kalyan Chakraborty; faculty members and students from the Department of Mathematics. The event was also graced by the presence of resource persons and course associates like Prof. Indranath Sengupta, Professor-IIT Gandhinagar; Prof. J. K. Verma, Professor-IIT Gandhinagar; Prof. Nikita Agarwal, Professor-IISER Bhopal; Dr Senthil Rani K S, Assistant Professor-IISER Berhampur; Dr Chaitanya J Kulkarni, Postdoctoral Fellow-IISER Mohali; Prof. Kashyap Rajeevsarathy, Professor-IISER Bhopal; Dr Ramesh Kasilingam, Assistant Professor-IIT Madras; Dr Archana Morye, Assistant Professor, University of Hyderabad, among others. The Foundation School dealt with topics like Algebra II, Analysis II and Topology II.

The Annual Foundation School (AFS) II, offered a stellar opportunity for the participants to engage, learn, and understand mathematical concepts while interacting with students from diverse academic backgrounds. The event concluded on June 07, 2025, and as part of the closing of the four-week foundational school, the university leadership, departmental heads, and faculty felicitated the resource persons with mementos honouring them for their contributions during the foundation course.

SRM University-AP, Amaravati, is proud to celebrate the outstanding achievement of Ms Budde Shanumukhi Naga Sai, a first-year B.Com student from the Paari School of Business, who has brought global recognition to the University by breaking two world records and winning three silver medals at the Singapore 2025 Asia Cup Leg 2.

She set a new world record in the Under-21 Women Team (50m Compound) category with a score of 2101, surpassing the previous record of 2076, and also established a new world record in the Under-21 Mixed Team (50m Compound) category with a score of 1420, edging past the earlier record of 1419.

In addition to these record-breaking performances, Shanumukhi clinched three silver medals in the Individual Compound Women, Compound Mixed Team, and Compound Women Team events, solidifying her position as a rising star in international archery.

Reflecting on her success, Shanumukhi shared, “I am truly grateful and proud that my hard work has paid off. This achievement feels surreal, but it has come after navigating through intense pressure and challenging phases. Archery is not just a sport; it’s a game of the mind that demands immense mental strength and control.”

She added, “I believe that individuals with mental resilience and physical discipline can thrive in this game, as it presents limitless opportunities. Women, in particular, have immense potential to break boundaries and reach even greater heights in this field.”

Shanumukhi has been practicing archery for over seven years with a disciplined daily routine starting at 5:00 AM and continuing until 7:00 PM, encompassing both fitness training and skill practice.

Earlier this year, she secured third place in the 44th Junior National Tournament and 41st Sub Junior National Tournament in team, individual, and mixed categories, which were held in Bholpur, West Bengal, and Jaipur, Rajasthan, respectively.

Mr Anup Singh Suryavanshi, Director – Sports, added, “Shanumukhi’s achievement is truly inspirational. It reflects her dedication, resilience, and the sporting spirit we strive to foster at SRM-AP. We are committed to providing all the necessary support to help our athletes reach greater heights.”

Professor Manoj K Arora, Vice Chancellor of SRM University-AP, congratulated Shanumukhi on her remarkable feat, “Our students continue to make us proud by excelling on international platforms. Shanumukhi’s success is a testament to the University’s commitment to nurturing talent and supporting students’ holistic growth.”

Pro-Vice Chancellor, SRM University-AP, Dr Satish Kumar, said, “ Shanumukhi’s triumph shines brightly in the league of champions at SRM University-AP. Her outstanding performance on an international stage is a remarkable example of what our students can achieve with perseverance, focus, and the right support.”

SRM University-AP extends its heartiest congratulations to Budde Shanumukhi Naga Sai and wishes her continued success in her future endeavours.