Read the equation
Divides the number of lost frames by the number sent. The metric requires aligned counts over the same period and a nonzero sent-frame count.
Terms & definitions
The recovered passage does not supply a separate symbol table. Read the source context for the notation used in this version; familiar letters may carry different meanings in other builds.
How it works
Read FL as the quantity being defined or updated by this relation.
Forms a ratio or division. A zero denominator needs an explicit exclusion or handling rule.
Use this version’s variable definitions and update order. The same symbol may be assigned a different meaning in another build.
Assumptions & limits
Source recovery establishes that the expression appears in this record. Its mathematical validity, implementation behavior, and interpretation must be assessed separately. See the linked source and research notes for the checks available for this version.
Original context
Read the surrounding source passage
Layer 2 — Link Layer (N2)
Frames, MAC, error correction.
1. Frame Loss:
FL = \frac{F_{\text{lost}}}{F_{\text{sent}}}
2. Link Utilization:
U_2 = \frac{B_{\text{used}}}{B_{\text{avail}}}
3. Cost:
\text{Cost}_2 = a_2 FL + b_2 U_2
4. Full-layer global update applies here identically.
⸻Exact original notation
FL = \frac{F_{\text{lost}}}{F_{\text{sent}}}Related builds
Sources & provenance
FL = \frac{F_{\text{lost}}}{F_{\text{sent}}}