Wi-SUN Modules

Wi-SUN Modules

Wi-SUN is an abbreviation for Wireless Smart Utility Network, which is a next-generation wireless communication standard that has received a great deal of attention due to the adoption of this Wi-SUN in smart meters of Japan's leading electric power companies. In Japan, it is used in the 920MHz band called specific low power radio. The 920MHz band is a radio wave band that is unlikely to cause radio wave interference with existing radios, has low power consumption, and is capable of long-distance data communication. Compared to 2.4 GHz used by ZigBee and Bluetooth, the 920 MHz band has excellent radio wave wraparound characteristics. Therefore, it is possible to ensure stable communication even in the presence of walls and obstacles. It has already been used in the United States, China, South Korea, and Australia, and Europe is also considering opening regulations. It is believed that this will continue to expand the market.

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      Supporting Information

       

      Wi-SUN Module Product List

      Approved standardsWi-SUN
      B Route
      Wi-SUN B Route / HANWi-SUN B Route / Enhanced HANWi-SUN FAN
      Part No.BP35A1BP35C0BP35C2BP35C0-J11BP35C1-J11-T01
      (For evaluating )
      BP35C2-J11-T01
      (For evaluating )
      BP35C5
      Appearance

      BP35A1

      BP35C0

      BP35C2

      BP35C0-J11

      BP35C1-J11-T01 (For evaluating )

      BP35C2-J11-T01(For evaluating )

      BP35C5

      Evaluation Boards

      BP35A1

      BP35C0

      -

      BP359C0-J11-T01

      -

      -

      BP35C5

      Radio LawARIB STD-T108 compliantARIB STD-T108 compliant
      FCC Part15 compliant
      Antenna---
      ConnectorBoard to BoardSMD
      (Surface Mount Device)
      USBSMD
      (Surface Mount Device)
      Board to BoardUSBSMD
      (Surface Mount Device)
      RFML7396B
      (Lapis)
      ML7416
      (Lapis)
      ML7436N
      (Lapis)
      HOST I/FUARTUSB
      (USB 2.0 compliant)
      UARTUSB
      (USB 2.0 compliant)
      UART
      Frequency922.5 ~ 927.9MHzARIB:922.5 ~ 927.9MHz
      FCC:902 ~ 928MHz
      ModulationBinary GFSK
      Transmission
      Speed
      100kbps.ARIB: 50k, 100k,150k, 300k
      FCC: 50k, 150k, 300k
      Transmission power20mW(13dBm)20mW/10mW/1mW20mW
      Reception sensitivity-103dBm
      (100kbps, BER<0.1%)
      -95dBm
      (150kbps, BER<0.1%)
      Supply Voltage2.7V~3.6V2.6V~3.6V4.5V~5.0V~5.5V2.6V~3.6V(20mW/10mW)
      1.8V~3.6V(1mW)
      4.5V~5.0V~5.5V2.6V~3.6V
      Current consumption
      (TYP)
      46mA [TX 20mW]
      30mA [RX]
      9μA [Sleep]
      45mA [TX 20mW]
      25mA [RX]
      4μA [Sleep]
      48mA [TX 20mW]
      30mA [RX]
      6mA [Sleep]
      47mA [TX 20mW]
      42mA [TX 10mW]
      24mA [TX 1mW]
      27mA [RX]
      4μA [Sleep]
      47mA [TX 20mW]
      42mA [TX 10mW]
      24mA [TX 1mW]
      27mA [RX]
      4μA [Sleep]
      50mA [TX 20mW]
      32mA [RX]
      6mA [Sleep]
      40mA [TX 20mW]
      20mA [RX]
      OperatingTemp.(℃)-20 ~ +80-30 ~ +85-20 ~ +50-30 ~ +85-20 ~ +80-20 ~ +50-30 ~ +85
      Size(mm)33.5×22.0×3.915.0×19.0×2.621.4×49.7×8.515.0×19.0×2.633.5×22.0×3.921.4×49.7×8.515.0×19.0×2.6

      Wi-SUN HAN Compatible Modules

      Wi SUN Alliance BP35C0/BP35C0-J11/BP35C2

      POINT 01 Certification under Japan’s Radio Law enables immediate use

      ROHM wireless communication modules have obtained certification under Japan’s Radio Law. And the pre-tuned wireless characteristics of the internal antenna allows customers to immediately begin development and evaluation without the need for complicated characteristics adjustment. Of course, Radio Law certification is not needed for the customer’s device.

      POINT 02 Wi-SUN certified, registered as a CTBU

      The BP35A1/BP35C0/BP35C0-J11 wireless communication modules have already obtained Wi-SUN certification. The BP35C2 USB dongle is also certified. The modules are also registered as CTBUs (Certified Test Bed Units) by the Wi-SUN Alliance, playing the role as reference units for Wi-SUN communication (Wi-SUN for ECHONET Lite Profile).

      registered as a CTBU

      Wi-SUN FAN Compatible Module

      Wi-SUN FAN Compatible Module

      POINT 01 Supports multi-hop mesh networks

      Support for multi-hop communication (relay function) is provided by implementing RPL centered on RFC6550 (up to 20 hops), enabling bidirectional mesh-type communication. This makes it possible to automatically optimize the hop route - even in the event of communication failure due to newly constructed buildings or other surrounding obstacles - ensuring high reliability communication.
      A maximum of 1,000 simultaneous connections can be achieved by installing a FAN stack for large systems in the master gateway MCU (20 hops between repeaters and 64 terminals per repeater).
      The BP35C5 incorporates a Wi-SUN FAN stack in the internal memory that gives users the option of constructing a simple small-scale system connecting up to 16 devices to the gateway without an external MCU.

      ROHM Module Solutions

      POINT 02 Supports channel hopping

      Scheduled channel switching minimizes mutual interference even with increased communication traffic At the same time, it is possible configure a robust system strong against radio interference and noise while performing confidential communication.
      Under Japan’s Radio Law, there is a transmission time limit of only 6 minutes per hour when using one channel, but this can be extended to 12 minutes per hour utilizing multiple channels through channel hopping.

      Supports channel hopping

      POINT 03 Enables high data rates

      Wi-SUN FAN supports data rates of 50kbps and 150kbps.
      The BP35C5 also supports 300kbps.
      A high data rate allows data to be sent at high speed, reducing transmission time along with power consumption while suppressing mutual interference due to increased communication traffic.

      Enables high data rates

      POINT 04 Wi-SUN FAN certified

      The BP35C5 is a Wi-SUN FAN certified module. Embedding the module allows users to develop Wi-SUN FAN-compatible products without the need to undergo the certification process. (Must be a Wi-SUN Alliance member to use the Wi-SUN logo) The moduled complies with radio laws in Japan and the US.

      Wi-SUN FAN certified

      Evaluation boards enable immediate use

      Combination No.Host CPU I/F TypeWi-SUN ModulesAdapter BoardI/F Board
      1UARTBP35A1BP35A7ABP359C
      2BP35C0-T01-BP359C
      3BP35C0-J11-T01-BP359C
      4BP35C1-J11-T01BP35A7ABP359C
      5BP35C5-T01-BP359C
      6USBBP35C2-J11-T01--
      For evaluating the BP35C0/BP35C0-J11/BP35C5
      For evaluating BP35A1