[PATCH 1/2] add new observed energy field

Benjamin Berg <[email protected]> Fri, 28 Nov 2025 17:00:17 +0100
Newsgroups org.netbsd.radiotap
Message-ID <[email protected]>
From: Benjamin Berg <[email protected]>

This adds a new "observed energy" field of type 35 that can be used to
report information about signal duplication.

Signed-off-by: Benjamin Berg <[email protected]>
---
 fields/observed energy.md | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 fields/observed energy.md

diff --git a/fields/observed energy.md b/fields/observed energy.md
new file mode 100644
index 0000000..df8d48b
--- /dev/null
+++ b/fields/observed energy.md	
@@ -0,0 +1,27 @@
+---
+title: Observed energy
+categories: [defined]
+type: 35
+---
+Type
+: 35
+
+Structure
+: u16 known
+: u16 bw
+
+Unit(s)
+: none
+
+This field contains information related to the energy that was observed and
+likely belong to the same transmission. This may be larger than the required
+signal bandwidth if the transmission was duplicated over multiple channels.
+
+The `known` field indicates which information is known:
+
+| **flag** | **definition** | **notes** |
+| 0x0001 | observed energy bandwidth known | In `bw` part of the field |
+
+The `bw` field encodes the observed bandwidth in MHz. The reported bandwidth is
+sufficient to contain all subchannels where energy likely belonging to the
+same transmission was observed.
-- 
2.51.1