## 3 Survey Results
### Network  
Deployment networking is summarized in Table 10.  
A mesh, multi-hop network is the most popular network topology-used in 47% of analyzed cases (Figure 7). The second most popular topology is a simple one-hop network: 25%. Multiple such \begin{table}
\begin{tabular}{l l l l l l l} \hline \hline
**Nr** & **Codename** & **Network topology** & **Mobile motes** & **Deployment area** & **Max hop count** & **Randomly deployed** \\ \hline
1 & Habitats & multi-one-hop & n & 1,000 \(\times\) 1,000 m & 1 & n \\
2 & Minefield & multi-one-hop & y & 30 \(\times\) 40 m &? & y \\
3 & Battlefield & multi-one-hop & n & 85 m long road &? & y \\
4 & Line in the sand & mesh & n & 18 \(\times\) 8 m &? & n \\
5 & Counter-sniper & multi-one-hop & n & 30 \(\times\) 15 m & 11 & y \\
6 & Electro-shepherd & one-hop & y &? & 1 & y (attached to animals) \\
7 & Virtual fences & mesh & y & 300 \(\times\) 300 m & 5 & y (attached to animals) \\
8 & Oil tanker & multi-one-hop & n & 150 \(\times\) 100 m & 1 & n \\
9 & Enemy vehicles & mesh & y, power node & 20 \(\times\) 20 m & 6 & n \\
10 & Trove game & one-hop & y &? & 1 & y, attached to users \\
11 & Elder RFID & one-hop & n (mobile RFID tags) & \(<10\,m^{2}\) & 1 & n \\
12 & Murphy potatoes & mesh & n & 10,00 \(\times\) 1,000 m & 10 & n \\
13 & Firewarcat & multi-mesh & n & 160 \(km^{2}\) & 4? & n \\
14 & AlarmNet & mesh & y, mobile body motes & apartment &? & n \\
15 & Ecuador Volcano & mesh & n & 8,000 \(\times\) 1,000 m & 6 & n \\
16 & Pet game & mesh & y &? &? & y \\
17 & Plug & mesh & n & 40 \(\times\) 40 &? & n \\
18 & B-Live & multi-one-hop & n & house & 2 & n \\
19 & Biomotion & one-hop & y, mobile body motes & room & 1 & n (attached to predefined \\  & & & & & body parts) \\
20 & AID-N & mesh & y &? & 1+ & y, attached to users \\
21 & Firefighting & predefined tree & y, human mote & \(3,200\,m^{2}\) &? & n \\
22 & Rehabil & one-hop & y, human motes & gymnastics room & 1 & y, attached to patients and \\
23 & CargoNet & one-hop & y & truck, ship or plane & 1 & n \\
24 & Fence monitor & one-hop? & n & 35 \(\times\) 2 m & 1? & n \\
25 & BikeNet & mesh & y & 5 km long track &? & y (attached to bicycles) \\
26 & BriMon & multi-mesh & y, mobile BS & 2,000 \(\times\) 1 & 4 & n \\
27 & IP net & multi-one-hop & n & 250 \(\times\) 25 3 story &? & n \\  & & & & building + mock-up & & \\  & & & & town \(500\,m^{2}\) & & \\
28 & Smart home & one-hop & n &? &? & n \\
29 & SVATS & mesh & y, motes in cars & parking place &? & n \\
30 & Hitchhiker & mesh & n & 500 \(\times\) 500 m & 2? & n \\
31 & Daily morning & one-hop & y, body mote & house & 1 & n (attached to human) \\
32 & Heritage & mesh & n & 7.8 \(\times\) 4.5 \(\times\) 26 m & 6 & n (initial deployment \\  & & & & & static, but can be moved \\  & & & & & & later) \\
33 & AC meter & mesh & n & building &? & y (Given to users who plug \\  & & & & & in power outlets of their \\  & & & & & choice) \\
34 & Coal mine & multi-path mesh & n & 8 \(\times\) 4 \(\times\)? m &? & n \\
35 & ITS & mesh & n & 140 m long road & 7? & n \\
36 & Underwater & mesh & y &? & 1 & n \\
37 & PipeProbe & one-hop & y & 0.18 \(\times\) 1.40 \(\times\) 3.45 m & 1 & n \\
38 & Badgers & mesh & y & 1,000 \(\times\) 2,000 m? &? & y (attached to animals) \\
39 & Helens volcano & mesh & n &? & 1+? & n \\
40 & Tunnels & multi-mesh & n & 230 m long tunnel & 4 & n \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Deployments: network. one-hop networks are used in 15% of deployments. Altogether, routing is used in 57% of cases. Maximum hop count does not exceed 11 in the surveyed deployments. A rather surprising finding is that almost half of deployments (47%) have at least one mobile node in the network (while maintaining a connected network). _Design rule 18_: Multi-hop routing is required as a default component, which can be turned off, if one-hop topology is used. Topology changes must be expected; at least 11 hops should be supported. Additionally, 30% have random initial node deployment, increasing the need for a neighbor discovery protocol.