认知无线网络中一种新的反压式传输控制机制

摘要

认知无线网络中资源动态变化,必须制定特别的传输控制机制来协调各节点间的传输.该文提出一种新的反压式传输控制机制,充分利用局部节点间的调整能力,将端到端传输中出现的不良网络状况尽量解决在局部,使得源节点可以较温和地做出端到端控制,从而保证端到端传输的高效与平稳.大量仿真证明,该文控制机制能有效适应认知无线网络的动态环境,保证较高效且平稳的端到端传输.%Because the resources in cognitive wireless networks are high dynamic,there must be a special transmission control mechanism to coordinate the transmission of each node.A novel backpressure transmission control mechanism is proposed to supply an efficient and stable end to end transmission.The novel control mechanism takes full advantage of the adjustment ability of the local nodes to solve the undesirable network conditions in a local area and make the source node making the end to end control measures softly.An extensive simulations show that the transmission control mechanism is suitable for the dynamic cognitive wireless networks,and is capable of making the end to end transmission efficient and stable.