Hierarchical Routing with Optimal Clustering Using Fuzzy Approach for Network Lifetime Enhancement in Wireless Sensor Networks

Table 2

Fuzzy membership functions.

S. No	Residual energy	Communication cost	Position	CH selection
1	Very low	Small	Near	Low
2	Low	Small	Near	Low
3	Medium	Small	Near	Medium
4	High	Small	Near	High
5	Very high	Small	Near	Very high
6	Very low	Intermediate	Near	Low
7	Low	Intermediate	Near	Low
8	Medium	Intermediate	Near	Medium
9	High	Intermediate	Near	Medium
10	Very high	Intermediate	Near	Very high
11	Very low	Large	Near	Very low
12	Low	Large	Near	Low
13	Medium	Large	Near	Medium
14	High	Large	Near	High
15	Very high	Large	Near	High
16	Very low	Small	Average	Very low
17	Low	Small	Average	Low
18	Medium	Small	Average	Medium
19	High	Small	Average	High
20	Very high	Small	Average	Very high
21	Very low	Intermediate	Average	Very low
22	Low	Intermediate	Average	Low
23	Medium	Intermediate	Average	Medium
24	High	Intermediate	Average	Medium
25	Very high	Intermediate	Average	High
26	Very low	Large	Average	Low
27	Low	Large	Average	Low
28	Medium	Large	Average	Medium
29	High	Large	Average	Medium
30	Very high	Large	Average	High
31	Very low	Small	Far	Very low
32	Low	Small	Far	Low
33	Medium	Small	Far	Medium
34	High	Small	Far	Medium
35	Very high	Small	Far	High
36	Very low	Intermediate	Far	Very low
37	Low	Intermediate	Far	Low
38	Medium	Intermediate	Far	Medium
39	High	Intermediate	Far	High
40	Very high	Intermediate	Far	High
41	Very low	Large	Far	Very low
42	Low	Large	Far	Very low
43	Medium	Large	Far	Low
44	High	Large	Far	Medium
45	Very high	Large	Far	Medium