Dynamic Power Allocation and Routing for Time Varying Wireless Networks

—We consider dynamic routing and power allocation for a wireless network with time-varying channels. The network consists of power constrained nodes that transmit over wireless links with adaptive transmission rates. Packets randomly enter the system at each node and wait in output queues to be transmitted through the network to their destinations. We establish the capacity region of all rate matrices ( ) that the system can stably support—where represents the rate of traffic originating at node and destined for node . A joint routing and power allocation policy is developed that stabilizes the system and provides bounded average delay guarantees whenever the input rates are within this capacity region. Such performance holds for general arrival and channel state processes, even if these processes are unknown to the network controller. We then apply this control algorithm to an ad hoc wireless network, where channel variations are due to user mobility. Centralized and decentralize...

• Type: Conference
• Year: 2003
• Where: INFOCOM
• Authors: Michael J. Neely, Eytan Modiano, Charles E. Rohrs
• Keywords: Capacity Region, Communications, INFOCOM 2003, Power Allocation, Wireless Network