
Efficient Protocols for Wireless Power Transfers in Ad Hoc Networks 547
(d)
0 800 1600 2400 3200 4000
0
100
200
300
400
500
600
700
800
900
1000
Events
Covered points
1-covered
2-covered
3-covered
>3-covered
0 800
1600
2400 3200 4000
0
100
200
300
400
500
600
700
800
900
1000
Events
Covered points
(e)
1-covered
2-covered
3-covered
>3-covered
FIGURE 21.6 (Continued) Coverage aging of multiple-charger protocols. (d) CC and (e) CCGK.
rather serves as an upper bound of their performance. The power of CCGK comes from the great
amount of knowledge it assumes and from the robust CC of the mobile chargers. The DCLK protocol,
with limited network knowledge, is an efficient distributed alternative, ...