面对当前联网发展的结构性疲软，许多国家正纷纷向宽带时代迈进。美国联邦通讯委员会(FCC)在1999年2月公布的一份情况报告书中，第一次提出了“宽带服务”的概念。与此同时，美国已开始建设速率达2.5吉比特/秒的Internet2(高速校园网)和“下一代因特网”(NGI)。一些新兴工业化 Facing the structural weakness of the current networking development, many countries are moving forward one after another to the era of broadband. For the first time, the Federal Communications Commission (FCC) released a situation report in February 1999 that introduced the concept of “broadband service.” In the meantime, the United States has started building Internet2 (High Speed ​​Campus Network) and “Next Generation Internet” (NGI) at 2.5Gbps. Some new industrialization