A. Model of TTEthernet Switch
TTEthernet extends the standard Ethernet switch by adding
the time deterministic frame transfer capabilities, while retaining
full compatibility with the requirements of IEEE 802.3.
As shown in Figure 1, the TTEthernet switch consists of
multiple ports and a bridge. Each port contains a physical
layer and a MAC layer. The physical layer is built according
to IEEE 802.3. The MAC layer is based on IEEE 803.2 with
the extensions explained in the following.