YesDR – AI-Powered Private Cellular Standard

YesDR

An AI-Powered Private Cellular Standard

What is YesDR?

YesDR (Your extensible software Defined Radio) is an open, modular standard framework for the development, instruction, and experimentation of end-to-end cellular wireless protocols—spanning from the physical layer to the core network—utilizing Software-Defined Radios (SDRs). Engineered for flexibility and extensibility, YesDR facilitates the integration of AI-driven features including channel prediction, protocol optimization, dynamic spectrum access, traffic forecasting, spectrum sensing, signal classification, and network automation. YesDR standard framework empowers academic researchers, educators, and startups to advance 5G/6G testbeds, develop AI-enhanced wireless solutions, and foster innovation in future communication technologies.

Mission

To offer a transparent, modular wireless standard stack for research, teaching, and innovation—from PHY to core.

Who It's For

Academic researchers in wireless communication, SDR, and AI integration
University labs (ECE, CSE) and deep-tech startups working on 5G/6G technologies
Organizations building 5G/6G testbeds
Engineering colleges and universities teaching 5G/6G standards and architecture
Faculty and students pursuing UG/PG projects in end-to-end cellular communication
Teams designing new core network and RAN protocols for future wireless systems
Makers, hobbyists, and open-source enthusiasts exploring cellular stack development
Educators building lab-based curriculum for practical 5G/6G training
Researchers focused on PHY-layer innovation, protocol optimization, or MEC/ORAN integration

Developed By

Chandhar Research Labs Pvt Ltd
BaSig Wireless Laboratories Pvt Ltd
1/302, Main Road, Arupathy,
Tharangambadi Taluk, Mayiladuthurai District,
Tamil Nadu – 609 309, India.

Deep Radio®

Deep Radio®, a flagship product from Chandhar Research Labs Pvt Ltd and BaSig Wireless Laboratories Pvt Ltd, is built entirely on the YesDR standard. It delivers a practical, end-to-end wireless testbed for education, research, and prototyping in 5G/6G and AI-driven radio systems.

YesDR Overall Architecture

The figure below illustrates the end-to-end architecture of YesDR including the Control and User Planes.

YesDR Components

Term	Full Form	Description
YUE	YesDR User Equipment	The end-device or terminal used by the end user.
YBS	YesDR Base Station	Provides radio access and initial control signaling.
YSM	YesDR Spectrum Monitor	Dedicated unit that monitors spectrum usage in real time, identifies interference, and detects underutilized bands to support dynamic spectrum allocation via YCRF.
YCore	YesDR Core	Dedicated unit that monitors spectrum usage in real time, identifies interference, and detects underutilized bands to support dynamic spectrum allocation via YCRF.

YesDR Core Functions

Term	Full Form	Description
YAMF	YesDR Access and Mobility Management Function	Handles registration and mobility
YSMF	YesDR Session Management Function	Manages IP session lifecycles
YUPF	YesDR User Plane Function	Forwards user-plane traffic
YNRF	YesDR Network Repository Function	Service discovery and registration
YUDM	YesDR Unified Data Management	Subscriber and device profile storage
YAUSF	YesDR Authentication Service Function	Identity verification and key agreement
YPCF	YesDR Policy Charging Function	Applies policies to sessions and flows
YNEF	YesDR Network Exposure Function	External access to network services
YNSSF	YesDR Network Slice Selection Function	Manages network slicing
YRMF	YesDR Radio Management Function	Spectrum, power, bandwidth allocation
YCRF	YesDR Cognitive Radio Function	AI-driven spectrum monitoring

Control Protocols

Protocol	Full Form	Description
YACP	YesDR Access Control Protocol	Manages access and authentication
YSMP	YesDR Spectrum Management Protocol	Coordinates spectrum management

YesDR: End-to-End Flow Diagram

YACP Packet Details in Wireshark

YSMP Packet Details in Wireshark

PFCP Packet Details in Wireshark

HTTP Packet Details in Wireshark

GTP Packet Details in Wireshark

YACP and YSMP Packet Message Details

Key Features of YesDR

Open Academic Standard: YesDR is a fully open and academic-friendly alternative to complex 3GPP stacks, enabling students and researchers to develop, test, and teach wireless protocols with ease.
Full-Stack Customization: Offers complete visibility and control across PDCP → RLC → MAC → PHY layers, including GTP tunneling—ideal for protocol experimentation and innovation.
Python/C++ Dual Availability: Developed initially in Python for quick prototyping and research, with seamless migration to high-performance C++ for deployment.
Named Subsystems: Modular components like YUE, YBS, YCore, etc., mimic 3GPP functions in a simplified structure, making it intuitive for teaching and rapid iteration.
Hardware Agnostic: Compatible with Deep Radio.
Community-Driven Framework: Built to grow as a collaborative, open-source project, with extensible architecture and contributor-friendly design.
Interoperability Ready: Designed to integrate with existing tools like OpenAirInterface, Free5GC, Open5GS, UERANSIM, and potential ORAN-based components—bridging experimentation with real-world 5G/6G deployments.

Core Components to Finalize

Component	Status	Next Step
YUE (UE)	Done	Port to C++, test on hardware
YBS (Base Station)	Done	Add scheduler, Control Signalling
YSM (Spectrum Monitor)	Done	Add traffic prediction
YCore (Core)	Done	Finalize
Protocols (YACP, YSMP)	Done	Draft full behavior + message formats
YPHY (BPSK stack)	Done	Add QPSK, OFDM, channel coding options
YPHY (OFDM stack)	Tx Done	OFDM Receiver to be done
YPHY (UDP stack)	Done	Add uplink

YesDR Animation

Contributors

Prabhu Chandhar, Chandhar Research Labs Pvt Ltd, BaSig Wireless Laboratories Pvt Ltd
Atmanand Gauns, Intern from Goa College of Engineering, Goa (Faculty: Shajahan Kutty)
Pattabiram, Intern from KL University, Vijayawada, Andhra Pradesh (Faculty: Aravind Kilaru)
Shiva Kumar Malaya, Intern from KL University, Vijayawada, Andhra Pradesh (Faculty: Aravind Kilaru)