MAC/DLL for Narrowband and Broadband Solutions

Yitran offers its high performance, PLC optimized, royalty free MAC (Medium Access Control Layer)/DLL (Data Link Layer) on top of its uniquely robust and reliable narrowband and broadband PHY (Physical Layer).

Distributed MAC for Broadband Solutions

Optimized for power line communication, Yitran's distributed MAC implementation is designed to support a wide variety of broadband applications.

Based on proven MAC protocol standards and concepts (such as IEEE 802.11), our distributed MAC integrates patented and patent pending enhancements specially adapted for the power line medium.  By controlling various parameters (such as packet size, power level and rate), Yitran’s MAC enables superior power line physical layer performance.

Implemented primarily in hardware (the ITC1 chip), the Yitran MAC employs a small amount of software code that is easily and cost-effectively integrated into a variety of low cost micro-controllers and requires limited memory.

Main Features and Benefits Include:

  CSMA/CA line access using unique RTS/CTS mechanism

  Support for short packet transmission without RTS/CTS

  Physical and virtual carrier sense functions ensure minimum collisions in the channel

  Quality of Service (“QoS”) (priorities, limit for channel capture time, adaptive back-off and more)

  Rate and power adaptation to channel quality

  Support for transmission of single Ethernet packet in one burst

  ARQ and partial ARQ

  Unicast and broadcast transmissions

  Complete solution (when combined with Yitran’s physical layer ICs) for USB, Ethernet and embedded power line node implementations

 MAC Overview

Peer-to-Peer DLL for Narrowband Solutions

Optimized for power line communication, Yitran's DLL implementation is designed to support a wide variety of narrowband applications.

Based on proven protocol standards and concepts (such as IEEE 802.11), our DLL integrates patented and patent pending enhancements specially adapted for the power line medium, such as Adaptive Back-off mechanism. These enhancements together with a simple command language Host interface enable quick and simple implementation of a high performance PLC narrowband network for Command and Control, Automation and a variety of additional applications

Integrated in the IT800SCP and IT800D on top of the PHY, the DLL requires no additional resources and seamlessly maximizing the utilization of the PHY.

Main Features and Benefits Include:

  CSMA/CA line access with Adaptive Back-off (patent pending)

  Adaptive rate control adaptation to channel quality

  Support for up to 1023 logical networks with up to 2047 nodes per network

  Acknowledged, unacknowledged and repetitive unacknowledged services (packet transmission and reception)

  Configurable packet structure enables compliance with world wide communication and networking standards

  Long packet support (packet fragmentation and re-assembly of up to 1521 Bytes)

  Network diagnostics and analysis

  Integrated to the IT800 PHY in a single chip solution (IT800SCP and IT800D)

  Simple command language Host interface

  Insures co-existence between IT800 based standard solutions (such as SCP) and proprietary solutions worldwide

 DLL Overview