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Random Phase Multiple Access (RPMA®)


Connecting tens of billions of devices on the Internet of Things requires a three-pronged approach:

  • Problem-solving innovation
  • Technology built exclusively for machines
  • Experience born out of serving real Internet of Things (IoT) customers

GRID Communications, in collaboration with RPMA Networks, the largest operator of IoT network in the world, will implement Ingenu’s RPMA® (Random Phase Multiple Access) technology, which is the only wireless technology built with all these three elements.

RPMA® is the world’s most reliable IoT network dedicated to connectivity for machines.

GRID Communications is the appointed exclusive RPMA® LPWAN (Low Power Wide Area Network) Operator in Singapore that will help accelerate the deployment of cutting-edge Internet of Things (IoT) solutions and Smart Nation initiatives.

About RPMA®

RPMA® was designed to provide a secure, large coverage footprint with tremendous capacity and low-power connectivity in the global 2.4 GHz band.  The 2.4 GHz band consists of a huge amount of spectrum (80 MHz) and can support billions of sensors.

An RPMA® access point is able to cover a vast amount of areas (wider and deeper) and supported by unparalleled network longevity.

GRID aims to deliver the greatest value for connecting the Internet of Things (IOT) devices.  A single RPMA® access point can cover up to 10 times the area of cellular and even penetrates underground and supports up to 64 thousand devices.   It can also receive up to 535,117 messages per hour which translates to a huge capacity for IoT devices.

RPMA® was designed to maximise battery by minimising overhead and transmit time. Field proven since 2008 and improved over the years, RPMA®’s superior battery management capability takes care of battery consumption comprehensively to give you the best battery performance for your sensors.

RPMA® has the most bandwidth available of any technology with 80 MHz available worldwide.

The RPMA® waveform was designed to be robust to interference in the ISM band at all layers of the protocol. With 80 MHz of spectrum available in the 2.4 GHz band, GRID can deploy multiple channels to provide an unmatched LPWAN network capacity and reliability in Singapore.


1 Battery Life – Filed-proven longest battery life

2 Coverage – Longest range with best indoor penetration

3 Capacity – High scalability for the most demanding requirements

4 Security – Certified to US government critical infrastructure requirement

5 Two-way Capability – Provides true two-way communications

6 100% Message Delivery – Message acknowledgement guaranteed

7 Firmware Upgrade – The only network with broadcast firmware upgrade in the background


With deeper and wider coverage, supported by unparalleled network longevity, RPMA Networks, Ingenu and GRID aim to deliver the greatest value for connecting the Internet of Things devices.

Battery Life

Battery Life

Reduces cost of maintenance as minimum power is used to transmit information



Communicate effectively even to devices that are inaccessible



Ensures network grows with your business



Peace of mind that data is safe and secure

Two-way Capability

Two-way Capability

Easy control and management of assets for massive sensors updates or parameter changes

100% Message Delivery

100% Message Delivery

Data is delivered at all times, especially critical information

Firmware Upgrade

Firmware Upgrade

Enables security updates and configuration changes to your devices, with zero disruption to your operations

End-to-End Turnkey Solution

The wireless backbone solution of RPMA® is uniquely positioned to provide a turnkey end-to-end solution for the simplest deployment for the Internet of Things. This includes smart water metering, asset tracking, environmental monitoring, vessel tracking, proactive infrastructure management and connected cars.

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Simplify the way you work.

GRID’s portable communication solutions has improved operational productivity, data security and workforce mobility in industries across Singapore.

We specializes in Mobile Data Management, IoT, PTT portable communication, vehicle fleet tracking and dispatch management solutions.

Let us help you work smarter, today.