Introduction#

Mode Switch Definitions#

The Wi-SUN FAN 1.1 specification describes the Modulation and Data Rate (MDR) Negotiation, with impacts at both the stack layer and the PHY mode switch.

This document only addresses the PHY mode switch as defined in on Wi-SUN PHY Technical Profile Specification 2V00 section 6.1.4, which describes Wi-SUN Mode Switch based on a specific Physical layer Protocol Data Unit (PPDU) frame using Mode Switch PHY header (PHR). This mechanism will be referred to as Wi-SUN PHY mode switch (for the function) or mode switch PPDU (for the specific PPDU name) to avoid ambiguity.

Note that Wi-SUN PHY Mode Switch is not compliant with the mode switch described in IEEE std 802.15.4-2020.

EFR32FG25 Support of Mode Switch and Deliveries#

EFR32FG25 supports Wi-SUN PHY mode switch. The RAILtest application lets you test the Mode Switch PPDU with a specific radio configuration using RAILtest commands described in the following sections.

Wi-SUN PHY Mode Switch allows PHY switching from a Frequency Shift Keying(FSK) PHY to another FSK PHY, or from an FSK PHY to an Orthogonal frequency-division multiplexing (OFDM) PHY. The configuration is achieved through the Radio Configurator in Simplicity Studio. An example of radio_settings.radioconf file for North America (NA), Japan (JP), and Europe (EU) is provided with the current document.