Network communications and mobile wireless services

Dr. Lavian provides analysis and design services for projects involving network communications, telecommunications, Internet protocols, mobile wireless, and internet web technologies. He also develops ideas into patents and products and is an expert witness in patent lawsuits including infringement and invalidity. He offers litigation support as well as technology education in patent disputes.

Areas of Technical Expertise

Dr. Lavian provides expert services for the following technologies:

Communication Networks Expert

Network communications, telecommunications, Internet protocols, TCP/IP suite, TCP, UDP, IP, Ethernet, 802.3, network protocols, network software applications, data link, network, and transport layers (L2, L3, L4), computer networks, and data center network architecture.

Mobile Wireless Expert

Wi-Fi, IEEE 802.11 (a/b/g/n/ac), MAC, PHY, OFDM, DSSS, Wireless LAN (WLAN), GSM, UTMS, CDMA, WCDMA, FDMA, TDMA, as well as 3GPP, 3GPP2, WIMAX, 802,16, Bluetooth and LTE. Cellular and wireless technologies, architectures, and standards. Cellular networks and infrastructure equipment including cell sites, base stations, handsets, mobile devices, and smartphones. Deep academic knowledge and hands-on experience in designing and implementing solutions consisting of such technologies.

Routing and Switching Expertise

LAN, WAN, VPN, routing protocols, RIP, BGP, MPLS, OSPF, multicast, DNS, QoS, switching, packet switching, layer 2 switching, layer 3 switching, layer 4 switching, routing, gateways, tunneling, as well as the detailed IETF RFC standards defining the relevant functional architectures, protocol specifications as well as forwarding and routing algorithms. networking principles, routing, software and hardware architectures, ASIC, firmware, high-speed backplanes, control plane, data plane, blocking and none-blocking architectures, priority queuing, time-to-live. packet addressing, routing and switching table structures.

Unified Communications Expertise

Public switched telephone network (PSTN) architecture and circuit switching. Internet protocols, and more specifically how these support integrations between the PSTN and IP telephony. VoIP, SIP, RTP, SS7, video/audio conferencing, streaming media, SMS, instant messaging (chat), presence, e-mail, SMTP, POP, codecs (including but not limited to G.711. G.722, G.729), H.323, MGCP, and RTP.

Internet and Cloud Expert

Architecture: web applications, client-server. cloud computing, distributed computing, peer to peer networking, virtual private networks, tunneling, content networking, network security, mobile applications

Internet protocols: HTTP, e-mail, SMTP, POP, IMAP, FTP, Telnet, SSH, SNMP, DHCP, DNS, NNTP, POP, SIP, IPv4, IPv6, UDP, TCP, IPSec

Programming languages and Software:Java, C/C++, software APIs, steaming, network management, content networking