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网络测量是多径传输控制中至关重要的技术,但现有的网络测量技术基本停留在仅对承载网的媒体传输进行测量与反馈,并不适用于多径传输服务模式.提出一种面向多径中继传输控制的网络测量方法,对多径传输路径及中继节点反馈的网络QoS参数进行了量化设计,给出了根据测量结果得到的参数耦合关系.另外,由于基于媒体传输控制的传输报文采用RTCP协议扩展,详细设计了扩展后的报文规范及复合QoS报告格式,为多径QoS参数的反馈提供依据.通过仿真实验与评价,验证了该方法的有效性和可行性.
Network measurement is the most important technology in multipath transmission control, but the existing network measurement techniques basically only measure and feedback the media transmission of the bearer network, and are not suitable for the multi-path transmission service mode. The network measurement method for multi-path relay transmission control is to quantify the network QoS parameters fed back by multipath transmission paths and relay nodes, and the parameter coupling relationship is obtained according to the measurement results. In addition, due to the media-based transmission control The transmission message is extended by RTCP protocol, and the extended message specification and composite QoS reporting format are designed in detail to provide the basis for the feedback of multipath QoS parameters. The simulation results show that the proposed method is effective and feasible.