针对存在物理损伤约束的生存性组播网络中的能耗问题, 提出了一种基于物理损伤的组播节能保护算法。该算法通过修改工作、保护链路的能耗代价, 优化工作、保护路径选择, 再进行物理损伤约束判断, 在工作、保护路径满足物理损伤约束的条件下实现网络能耗最小化。仿真结果表明, 该算法在满足物理损伤约束的条件下, 可以降低网络能耗。

In view of energy efficiency in survival multicast networks with physical layer impairment, this paper proposes a physical layer impairment-based energy-efficient multicast algorithm. This algorithm optimizes the selection of the operating and protecting paths and makes the judgment of physical impairment constraint by modifying the energy consumption cost for operating and protecting the links and minimizes the network energy consumption under the condition of satisfying the physical impairment constraint. Simulation results indicate that this algorithm can save network energy consumption under the condition of satisfying the physical layer impairment constraint.