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.

Parametric Search

 

Supporting Information

 

Wi-SUN Module Product List

Approved standards Wi-SUN
B Route
Wi-SUN B Route / HAN Wi-SUN B Route / Enhanced HAN Wi-SUN FAN
Part No. BP35A1 BP35C0 BP35C2 BP35C0-J11 BP35C1-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

-

-

-

Radio Law ARIB STD-T108 compliant ARIB STD-T108 compliant
FCC Part15 compliant
Antenna - - -
Connector Board to Board SMD
(Surface Mount Device)
USB SMD
(Surface Mount Device)
Board to Board USB SMD
(Surface Mount Device)
RF ML7396B
(Lapis)
ML7416
(Lapis)
ML7436N
(Lapis)
HOST I/F UART USB
(USB 2.0 compliant)
UART USB
(USB 2.0 compliant)
UART
Frequency 922.5 ~ 927.9MHz ARIB:922.5 ~ 927.9MHz
FCC:902 ~ 928MHz
Modulation Binary GFSK
Transmission
Speed
100kbps. ARIB: 50k, 100k,150k, 300k
FCC: 50k, 150k, 300k
Transmission power 20mW(13dBm) 20mW/10mW/1mW 20mW
Reception sensitivity -103dBm
(100kbps, BER<0.1%)
-95dBm
(150kbps, BER<0.1%)
Supply Voltage 2.7V~3.6V 2.6V~3.6V 4.5V~5.0V~5.5V 2.6V~3.6V(20mW/10mW)
1.8V~3.6V(1mW)
4.5V~5.0V~5.5V 2.6V~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) 33.5×22.0×3.9 15.0×19.0×2.6 21.4×49.7×8.5 15.0×19.0×2.6 33.5×22.0×3.9 21.4×49.7×8.5 15.0×19.0×2.6

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 Type Wi-SUN Modules Adapter Board I/F Board
1 UART BP35A1 BP35A7A BP359C
2 BP35C0-T01 - BP359C
3 BP35C0-J11-T01 - BP359C
4 BP35C1-J11-T01 BP35A7A BP359C
5 BP35C5-T01 - BP359C
6 USB BP35C2-J11-T01 - -
For evaluating the BP35C0/BP35C0-J11/BP35C5
For evaluating BP35A1