Cellular and Wireless Network Experts

Barr Group's cellular and wireless network expert witness team provides consulting, code review, reverse engineering, patent portfolio analysis, expert witness reports, and testimony for litigation involving communications technologies, standards, and protocols. Our experts have hands-on experience designing telecom/datacom equipment and the composure and credentials for trial.

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Wired and Wireless Network Equipment

Barr Group is in the business of designing reliable and secure computers and we have software and electrical engineers with a deep understanding of datacom and telecom products and protocols, such as:

  • Cellular GSM and CDMA protocols, including 3G/4G/5G and LTE
  • Cellular handset design, including smartphones and mobile phones
  • Cellular base station equipment and network design
  • Wireless networks and standards from WiFi 802.11 a/b/g/n to WiMax
  • Wired and wireless access points, switches, routers, and repeaters
  • DOCSIS cable modems and "triple-play" broadband access devices
  • All seven layers of the OSI (Open Systems Interconnection) model
  • TCP/IP Internet protocol suite and middleware libraries/stacks
  • Data center infrastructure design and operations
  • Fiber-optic communications and equipment
  • LANs, including IEEE 802.3 Ethernet, Industrial Ethernet, and 1GE/10GE
  • Bluetooth, Zigbee, and other personal area networks (PAN)
  • GPS, E-911 (Emergency 911), and geolocation technologies
  • Satellite telemetry and ground-to-satellite communications
  • Switched telephone networks (PSTN), PBXes, and Signalling System No. 7

Barr Group's cellular and wireless network experts are well acquainted with all of the mobile communications technologies, standards, and protocols as well as the operating systems and programming languages (such as C, C++, and assembly) used to develop datacom and telecom products. We are equally comfortable reviewing chip designs in Verilog and VHDL and, of course, electronic schematics.

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Expert Witness Services

Barr Group's cellular and wireless network experts support plaintiffs and defendants in litigation in U.S. District Courts, at the International Trade Commission (ITC), and before the Patent Trial and Appeal Board (PTAB). Our services include:

  • Technical assistance with drafting of discovery requests
  • Software source code review and analysis
  • Source code comparisons for copyright and trade secret theft
  • Prior art review for patent invalidity
  • Intellectual property portfolio review and analysis
  • Reverse engineering, including of electronics and binary code
  • Data center and network infrastructure audits
  • Analysis of network infrastructure vs industry best practices
  • Root cause analysis for system failures
  • Network traffic analysis, including WireShark sniffing
  • Review of cyber breaches in light of security measures
  • Expert reports, declarations, and witness statements
  • Testimony at deposition, oral hearings, and trials

Barr Group has a demonstrated ability to quickly activate one or more code reviewers to match the size, scope, and complexity of any project.

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The following is a representative subset of Barr Group's experts who have experience designing and/or testifying about these technologies:

Telecommunications

Video Encoding and Streaming Expert Profile

PhD electrical engineer and data communications expert with three decades of professional industry and research experience in areas such as video encoding and imaging technologies, digital signal processing (DSP), lossless data compression, and computer security. Areas of specialized technical expertise also include Amazon AWS and other cloud computing platforms.

Fiber Optics and Electronics Expert Profile

MIT-educated electrical engineer, computer scientist, and physicist with over two decades of technology leadership and entrepreneurial experience. Specialized areas of technology expertise include data communications, network processors, TCP/IP protocols, optical networking and optics, telecommunications including Voice over IP (VoIP), streaming audio-video, multimedia search, automated testing, database-backed website design and their security, and social networking.

Analog and Digital Electronics Expert Profile

Electronics and computer science expert with more than twenty-five years of hands-on experience analyzing, designing, and implementing real-time systems for commercial, industrial, and military applications. Has been chief architect or technical lead on numerous projects covering all aspects of the architecture and development of electronics (including circuit boards and FPGAs), embedded software, network and communication protocols, and graphical user interfaces.

DSP and Data Compression Expert Profile

Consultant and professor of electrical and computer engineering who is a named inventor on about twenty issued U.S. patents on digital signal processing (DSP) and digital receiver technologies. Teaches university courses in DSP and communication systems and writes and speaks throughout the world on applications of DSP. Also consults in advanced DSP-based communications systems.

Distributed Computer Systems Expert Profile

Computer scientist with over forty years of industry experience in design of computer systems, communications systems, electronics, and software. Worked on packet-switching networks, including the ARPAnet and early TCP/IP systems at BBN, custom VLSI circuits and the single-chip optical mouse at Xerox PARC, and led custom chip design efforts for the Apple Macintosh team.

Telecom Industry Regulation Expert Profile

Former lecturer and consultant in the field of digital communications technologies with industry-leading expertise in telecom regulation. Has specialized expertise in network architectures in traditional telecommunications areas, such as telephony, in data networks based on TCP/IP, and in wireless and cable systems. Also an expert in the ways these networks, their providers and users interact. Has a natural ability to explain technical, business, and legal/regulatory issues and trends simultaneously to audiences with a mix of levels of personal knowledge and expertise.

Penetration Testing Security Expert Profile

Computer engineer and information security expert specializing in the secure design of embedded computing devices and their networks. White hat hacker who uses penetration testing, reverse engineering techniques, and disassemblers such as IDA Pro to identify and close security holes in mobile, embedded, and cloud computing systems to prevent hacking and cyberattacks.

ASIC FPGA SoC Chip Design Expert Profile

Electrical engineer and computer scientist with extensive technical skills in both digital electronics and software and a track record of delivering successful silicon and system designs. Has designed and verified a variety of semiconductors including System-on-Chips (SoC), ASICs, and FPGAs. Specialized technical expertise includes memory controllers (SDRAM, DDR), high-speed communication interfaces (PCIe, SATA, USB), wireless devices, and other processor peripherals.

DOCSIS Cable Modem Expert Profile

Distinguished electrical engineer, technology executive and broadband industry pioneer and leader. Named inventor of nearly one hundred U.S. patents in broadband and wireless data communications, mesh networking, digital video technologies and mobile devices. Extensive experience in DOCSIS cable modem communications including numerous product firsts and as well as key standards development in the delivery of triple-play voice, video, and high-speed Internet.

Internet Protocols and IoT Expert Profile

Software and systems engineer with several decades of hands-on experience in the design and implementation of complex embedded systems based on Linux, Windows, and real-time operating systems. Specialist in Internetconnected products such as consumer electronics and IoT devices using WiFi 802.11, GSM/LTE cellular, and other wireless and wired protocols. Also has experience with FPGAs and implementing M2M communications through the use of Microsoft .NET-based web services.

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Expert S416N

Electronics and computer science expert with more than twenty-five years of hands-on experience...

Expert M242N

Professor of electrical and computer engineering and robotics with more

Expert H620K

Technology consultant with more than thirty years of experience in battery,

Expert J525N

Experienced computer engineer and corporate information technology leader with a successful...

Expert Q240L

Distinguished electrical engineer, technology executive and broadband industry pioneer and...

Expert J520S

Independent engineering consultant in the design of both electronics and software with a formal...

Expert I220K

A licensed professional engineer in the State of Arizona and in Manitoba, Canada and an engineer...

Expert K642K

Professor of electrical engineering with extensive experience as a technology industry...

Expert S530O

Electrical engineer with extensive electronics and software product development experience...

Expert H620S

Consultant and professor of electrical and computer engineering who is a named inventor on about...

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