Alexander Resources 4G Experts and Consultants
Product and Technology Analysis, Expert Witness,

Patent Infringement and Validity,
and Litigation Support Services

4G (Fourth Generation) Cellular Networks and Technologies

Our work in 4G (IMT-Advanced) technologies, networks and standards began in 2003. This work has included technical analysis, expert witness engagements, patent analysis projects, research reports, and seminars. As a result, we have developed an in-depth knowledge and understanding of nearly every facet of 4G. This includes:

  • 4G Network Technologies, Architectures & Standards
    • IMT-Advanced/LTE-Advanced, SAE, EPS, EPC & LTE
    • Network functions, protocols, interfaces, signalling and messages for:
      • Core Network (CN)/Network Subsystem (NSS) network element
      • Radio Access Network (RAN)/Access Network (AN) network elements
      • Authentication, Authorization and Accounting (AAA)
      • Channels: Physical, Logical, Traffic, Control and Transport
      • Handover and handoff
      • Mobility Management
      • Network interconnection and interworking
      • Packet and circuit switching
      • Security
      • Telecom management
      • User, Control and Network planes
    • Air & Radio interfaces, protocols, stacks, modulation, encoding, signalling and messages for:
      • Frequency Division Duplex (FDD)
      • Orthogonal Frequency Division Multiple Access (OFDMA)
      • Orthogonal Frequency Division Multiplexing (OFDM)
      • Single Carrier – Frequency Division Multiple Access (SC-FDMA )/Clustered DFT-S-OFDM
      • Time Division Duplex (TDD)
    • 4G Spectrum Use, Management and Availability
    • 4G Terminals & Phones
      • Architecture, functions, Operating Systems/OS, Graphical User Interfaces (GUI), text input, SIM cards, USIM cards, UICC smart card, activation, registration, authorization, Web browsers, filters and access control
    • 4G Applications & Services
      • Systems, methods, practices, standards and technologies used to manage, store, generate, send, and receive voice, text, MMS and SMS messages
      • Multimedia Messaging Service, video chat, mobile TV, High definition TV content, DVB
  • 4G Spectrum Use, Management and Availability
  • 4G LoCation Services (LCS) and Positioning methods (/locating methods)
  • 4G Billing and Charging Systems including usage information (Charging/Call Data Records - CDR), usage collection, rating, charging, call event, accounting and billing
  • Competitive analysis (carriers/operators, manufacturers, developers, distributors, resellers)
  • 4G Market Forecasts and Analysis (subscribers, sales and shipments)

Our Litigation Support Services for 4G include Product and Technology Analysis, Patent Analysis and Expert Witness Services. Previous 4G engagements have addressed:

  • System, standards, network, product and technology analysis (from a technical, functional, & market/industry and competitive perspective)
  • Patent analysis & research
    • Technical review and analysis of patent claims, preparation of claims charts and validity and infringement opinions
    • Defend and counter claims of infringement
    • Identify infringing patents and products
    • Identify infringing technical standards and the systems that incorporate these standards
    • Patentability Evaluations
    • Portfolio Analysis
    • Entire market value rule (EMVR) analysis
    • Product value apportionment analysis
  • Product quality, defects, repair and warranty issues
  • Confidentiality of trade secrets, customer lists, business plans, new & proprietary products and services
  • Business management, practices & operations
    • Contracts
    • Sales, marketing and distribution agreements
      • Dealer and distributor relationships and agreements
    • Royalty calculations & payments
    • Supplier agreements
    • Purchase orders and purchase agreements
  • 4G product & technology licensing and agreements
    • Joint development agreements
    • Product development agreements
      • Product specifications
For additional information see: Patent Analysis and Expert Witness Services

Other expert and consulting services focus on:
Cell Phones
Cell Phone Records, Billing and Usage
Mobile Phones
Radio Spectrum
Telephone Consumer Protection Act (TCPA)

Our Litigation Support Services are headed by Mr. Jerry Kaufman, the president of Alexander Resources. In addition to managing all engagements, he directly manages the research and production of all expert reports, analysis, and testimony. He personally testifies at trial and depositions.

Please refer to Mr. Kaufman's biography for additional information on his background and capabilities.

For a confidential review of your requirements, please contact Carol Smyth at 972-818-8225 or via e-mail at

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