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Introduction - RDK Extender

  • RDK Extender profile is a Yocto based RDK miniature build with opensource OpenSync agent
  • OpenSync agent is cloud agnostic and it forms mesh orchestrated by Plume cloud
  • RPI4 target is chosen for extender profile since this target is chip and widely available
  • Two external Wi-Fi dongles are used for 2.4GHz and 5GHz radio support
  • OpenSync's minimum requirement on the WiFi radio is the support for 2AP and 1 Station interface
  • Conceptually, RPI4 extender can be used with different Gateway devices(which has OpenSync agent). But currently validated with TurrisOmnia RDKB GW
  • Prerequisite: Need to contact Plume to acquiring TLS certificate and backhaul credential

Scope of the work

  • Onboarding RPI Extender to Router over Wi-Fi
  • RPI4 extender should appear online in Plume NOC
  • Extension of Internet to mobile from Router over Wi-Fi

High level Design / Architecture


RPI4 Extender build(32-bit) instructions:

repo init -u https://code.rdkcentral.com/r/manifests -b rdkb-2023q3-dunfell -m rdkb-pod-extsrc.xml
or
repo init -u https://code.rdkcentral.com/r/manifests -b rdkb-2023q3-dunfell -m rdkb-pod-nosrc.xml
repo sync -j4 --no-clone-bundle
<UPDATE 0001-Update-bhaul-credential.patch in meta-cmf-broadband layer>
MACHINE=raspberrypi4-rdk-extender source meta-cmf-raspberrypi/setup-environment
bitbake rdk-generic-extender-image

OpenSync version details:

Ported OpenSync version is 4.4.0.

OpenSync components

Branch

OpenSync Core component

osync_4.4.0

Platform-RDK

osync_4.4.0

RPI Vendor component

main


Sanity Test cases :

S.No

Sanity tested on

Status

S.No

Sanity tested on

Status

1

Image should be stable

Pass


2

OpenSync service and its manager should be running

Pass


3

RPI Extender onboarding over Wi-Fi

Pass


4

Able to Ping www.google.com from RPI Extender

Pass


5

Wifi Extension of Internet to mobile from GW

Pass

Currently through 2.4GHz Radio, While 5GHz radio is used for backhaul connectivity