1. Introduction
Often as a requirement of portability, wireless nodes in MANET have limited energy resources like batteries that can be quickly depleted by expensive wireless communications (including the energy cost of handling traffic for other nodes). In recent years, a large body of work considered the energy consumed, but only at the nodes participating in the existing flows. For MANET, a single communication packet can affect not only the sender and the receiver, but also all the nodes within the communication region of the sender. The important fact to notice is that, in addition to interference, this substantially increases the energy consumption at nodes overhearing this packet not meant for them [4], [7], to the extent that a node's battery can be completely depleted without being involved in any flow.