Ish Kumar Jain

BeamArmor: Anti-Jamming in 5G Cellular Networks with MIMO Null-steering [Hotmobile'24], [Milcom'23 Demo]

F Zumegen, IK Jain, D Bharadia

BeamArmor is a practical real-time application to monitor and mitigate jamming attacks in cellular networks while being hosted on a custom cellular Radio Access Network (RAN) controller. The RAN controller is built with the open-source RAN stack srsRAN and employs beam-nulling techniques to create nulls towards a jammer in real-time while efficiently managing computational resources, meeting the time requirements of the cellular network's physical layer functionalities, and seamlessly integrating with srsRAN.

mmFlexible: Flexible Directional Frequency Multiplexing for Multi-user mmWave Networks [Infocom'23]

IK Jain, RR Vennam, R Subbaraman, D Bharadia

Millimeter-wave bands support 100$\times$ more bandwidth than sub-6 systems, which could have easily been used to scale mmWave connectivity to hundreds or thousands of devices in a network, but it is limited to only a few devices. The underlying problem is not the availability of resources but the inefficient distribution of those resources to all users. The resource distribution in mmWave is limited to time-based scheduling, which serves one user at a time using a single directional beam. Our system, mmFlexible, deploys a new antenna array for frequency-dependent beamforming, where different frequency slices of the mmWave signal are beamformed in different directions with the same pencil beam.

mmSpoof: Resilient Spoofing of Automotive Millimeter-wave Radars using Reflect Array [IEEE S&P'23]

RR Vennam, IK Jain, K Bansal, J Orozco, P Shukla, A Ranganathan, D Bharadia

We show that FMCW automotive radars are vulnerable to spoofing attacks that can cause sensor malfunction and potentially lead to accidents. We present a "reflect array" spoofing device that manipulates the FMCW signal to carry out the attack.

Multiple smaller base stations are greener than a single powerful one [HotCarbon 2022]

A Gupta, IK Jain, D Bharadia

With uniform densification of base stations, the dependency on power amplifiers to transmit at unreasonable high powers reduces and opens the doors for greener wireless networks. At the same time, large-scale densification will lead to mushrooming of base-station hardware, which will start consuming more power. Hence, there exists a green-point of densification. Check out our short HotCarbon’22 workshop paper, which shows empirical models on green densification levels!

VRProj: Delivering 360-degree Video With Viewport-Adaptive Truncation [WPMC 2022]

T Qiu, IK Jain, R Wu, P Cosman, D Bharadia

We explore a new 3D-to-2D VR projection method called truncated square pyramid projection and show that it offers high flexibility for network and headset motion adaptation.

Two beams are better than one: Towards Reliable and High Throughput mmWave Links [Sigcomm'21]

IK Jain, R Subbaraman, D Bharadia

We show that a class of beamforming techniques called constructive multi-beam not only provides blockage resilience but also doubles the SNR leading to highly reliable and high throughput links compared to traditional single-beam links.

mMobile: Building a mmWave Testbed to Evaluate and Address Mobility Effects [mmNets'20]

IK Jain, R Subbaraman, TH Sadarahalli, X Shao, H Lin, D Bharadia

We built a custom 5G NR compliant mmWave testbed at 28 GHz to evaluate beam management algorithms. We describe the architecture and challenges in building such a testbed. We then create a novel, low-complexity beam tracking algorithm by exploiting the 5G NR waveform structure. The algorithm can sustain almost twice the average throughput compared to the baseline.

LocAP: Autonomous Millimeter Accurate Mapping of WiFi Infrastructure [NSDI'20]

R Ayyalasomayajula, A Arun, C Wu, S Rajagopalan, S Ganesaraman, A Seetharaman, IK Jain, D Bharadia

LocAP is an autonomous system to physically map the environment and accurately locate the attributes of existing wireless infrastructure in the physical space down to the required stringent accuracy of 3 mm antenna separation and 3 degree deployment orientation median errors, whereas state-of-the-art algorithm reports 150 mm and 25 degree respectively.

mmWave Blockage Analysis

IK Jain, R Kumar, S Panwar

We analyze the impact of blockage by static buildings, mobile blockers, and self-blockage by the user's body through stochastic geometry. Our results indicate that the minimum density of BS required to satisfy the Quality of Service (QoS) requirements of Ultra-Reliable Low Latency Communication (URLLC) applications is mainly driven by reliability and latency constraints rather than coverage or capacity requirements.

Master's thesis at NYU Wireless with Prof. Shivendra Panwar

Papers: ITC 2018 and JSAC 2019