Isdn . telecommunications - integrated services digital network - terminal adaption using statistical multiplexing 电信.集成服务数字网
Apon is a passive optical network where atm is adopted to transmit broadband and narrowband cells via the sdh frame structure . the service node interface is stm - n . the statistical multiplexing feature of atm enables a concentrated transmission of broadband services in apon Apon是在无源光网络中采用atm传送技术,利用sdh帧结构传送各种宽带和窄带业务的信元,业务节点接口采用stm - n接口。
Recently regarded as a viable switching technology to transport ip traffic directly over wdm networks , optical burst switching ( obs ) has received a lot of attentions because it combines the benefits of optical circuit switching ( ocs ) and optical packet switching ( ops ) , and overcomes their shortcomings , is more efficient in the bandwidth statistical multiplexing , and the reservation scheme 光突发交换( obs )作为一种实现ip - over - wdm的光交换技术,结合了波长路由交换( ocs )和光分组交换( ops )的优点,同时也克服了二者的不足,能提供更有效的波长统计复用和资源预留机制,已引起了国内外众多研究机构的关注。
As requirement changes and technology progresses in telecommunication , the traditional pcm has more drawbacks . at the same time , packet switched data networks has grown significantly in quality of service . ip telephone is pretty promising due to its advantages , such as using statistical multiplexing , high resource usage , flexible bandwidth , multi - user calling , voice and data mixing and so on 传统的电话随着通信业务需求的变化和技术进步,其不足之处日渐突出起来,而与此同时,分组数据网络在网络经济中和业务质量控制方面取得了巨大的进步和发展。
Because internet is based on the bandwidth statistical multiplexing principle so there are lots of active flows competing limited bandwidth resource in a link . when network congestion occurs aqm must send congestion notification to adequate sources to reduce the traffic load and avoid queue overflow 由于互联网是基于带宽统计复用的,一条链路上有很多活跃流( activeflows )在竞争有限的带宽资源,因此,进行拥塞通知时应充分考虑到瓶颈链路上流的数量,而red算法并没有考虑到这一点。