Abstract
In grid-based routing protocol, one node in a grid is elected as the grid leader. However, in the traditional grid leader election, nodes consume extra energy for election, especially in a high node density environment. In this paper, we propose a triangular power saving routing protocol with power balance (TPSPB) to address this issue. In TPSPB, a grid leader is elected directly without sending control packets as in the traditional grid leader election. Moreover, the proposed triangular route discovery in TPSPB could save more energy for nodes to transmit packets and prolong the network lifetime.