Kunz: Energy-Efficient MANET Routing: Ideal vs. Realistic
Performance
Motivation (cont.)
,Energy-Efficient
Routing Protocols:
–Range of energy metrics/routing objectives (some are
contradictory):
,Maximize
network lifetime (time until first node, 50% of nodes die)
,Minimize
energy cost per packet (particularly for radios with power control)
,Balance
residual nodal energy (allow all nodes to continue operation longer)
,Maximize “useful” work of network (i.e., send more packets
before running out of energy, either at sender/receiver or intermediate nodes)
–Many different routing approaches
,Pro-active
vs. reactive
,New
protocols vs. extending
standard protocols
,Existing
energy-efficient protocols require a node to have state information
(node’s residual energy level, etc.)
–No discussion of accuracy of collected
information/impact on performance
–QoS routing: little work as well, some evidence that
accuracy of information impacts quality of routing decisions and protocol overhead