在行動隨建即連網路中 (mobile ad hoc networks) ，電池的電量是決定mobile hosts可以在這個網路中存活時間長久的一個重要因素。本篇論文提出一個電量平衡的繞路協定，可平衡整個網路中各個mobile host的剩餘電量，藉此來延長整體網路的存活時間。電量平衡繞路協定使用了兩種不同的電量來繞路和傳輸封包，剩餘電量較少的mobile hosts在傳送封包時，使用較少的電量 (較小的傳輸半徑) 和其它的mobile hosts通訊，而剩餘電量較多的mobile hosts就使用較多的電量 (較大的傳輸半徑) 和其它mobile hosts通訊。藉由兩種不同傳輸電量，可以使整體網路的剩餘電量趨於接近，因此可以延長整體網路的存活時間。最後使用NS2來模擬我們提出來的電量平衡繞路協定。由模擬的結果可知，我們所提出的電量平衡繞路協定能更有效的延長網路存活時間，提高網路存活率，並讓整個網路中各個mobile host的剩餘電量更為接近。 In a mobile ad hoc networks(MANETs), most of the mobile hosts equip with a limited battery. Owing to the limited battery, power management and lifetime of the mobile hosts become important issues in the MANETs. This paper proposes a power balance routing protocol to improve mobile hosts' lifetime and balance the energy of the mobile hosts. The protocol presents two power level to transmit packets. From the remaining energy of mobile hosts we can easily determine the transmission power for each mobile hosts. According to the transmission power, mobile hosts can increase lifetime and balance energy in the MANETs. The simulator is NS2 and we compare lifetime, hop-counts, and energy standard deviation with DSR and Max-min routing protocol in several criteria. From the simulation results, the proposed protocol extends the lifetime 20 to 25% more than the DSR and 10 to 15% more than max-min routing protocol. Although the average hop-count increases 1~2 hops more than DSR, the protocol still keep similar hop-counts than Max-min routing protocol. Our protocol shows less energy standard deviation than DSR and max-min routing protocol. The results prove that our protocol can both increase lifetime and balance energy in the MANETs.
