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Power Control In Wireless Networks |
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Controlling the transmitter powers in wireless communication networks provides multiple benefits. It allows interfering links sharing the same radio channel to achieve required quality of service (QoS) levels, minimizing the power spent in the process and extending the battery life of mobile users. Moreover, by judiciously using power to achieve their QoS goals, interference is mitigated and the network capacity increases. The main dilemma that the transmitter (agent) faces in controlling its power is the following. When the agent observes high interference in the channel, it recognizes that it will have to spend a lot of power to overcome the interference and transmit a packet successfully. Therefore, a better strategy is to back off, buffer the traffic and wait for the interference to subside. However, as the agent is backing off, the buffer is filling up with newly arrived packets, which increases buffering delays and pushes the agent to become more power-aggressive to reduce its backlog. The interference in the channel is proportional to the power used by the agents using this channel. Therefore, a power-aggressive agent may cause other agents to go into a backoff mode or also become aggressive. In our research, we develop and analyze new strategies for coordinated power control
among multiple agents. The agents can potentially be heterogeneous by using different
initial policies. Recent Publications
For more information, please contact Dr. Hamid Berenji at IIS Corp. Email:
berenji@iiscorp.comPhone: (408)730-8345 |
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