摘要
多网协同是4G的基本特征和思想精髓,与多网融合的差异在于注重网络演进的多样性。多网协同追求的目标是系统论所述的“涌现”效果——产生网络独立存在时不具有的能力。多网协同具有多种形态,涉及多项核心技术。TD-SCDMA是ITU接纳的3个3G方案之一,如果沿袭WCDMA或CDMA2000的演进路线,它将逐步丧失自身的系统特点并在性能上处于劣势,因此把它与手机电视系统、有线电视系统等进行协同设计,构造出和现有系统兼容的多网协同TD-SCDMA系统——TD-SCDMA_Co系统。此系统使用相对成熟的技术,有产业链支撑,建网成本低,可以经济地提供业务;另外,TD-SCDMA_Co系统便于实现室内室外的良好覆盖,可以进入移动通信、地面电视广播、家庭IPTV、移动IPTV等多个市场。
Cooperative networking is the basic characteristic and kernel concept of 4G, and it emphasizes the diversity in wireless evolution rather than the network convergence. The goal what the cooperative networking is seeking for is the ＂emergence effect＂ addressed by the System Theory, that is to say giving birth to the ability that systems can never have without cooperation among them. The cooperative networking may be of various forms and involve multiple key technologies. TD-SCDMA is one of the three 3G standards accepted by ITU. If it follows the evolution road map of WCDMA or CDMA2000, it will gradually lose its system characteristics and retain an inferior position. A solution to TD-SCDMA evolution is to build a TD-SCDMA _Co system that is compatible with such existing systems as the handset ＂IV system and cable ＂IV system over the cooperative design of the TD-SCDMA system with these existing systems. With the relatively mature technologies and supported by the existing industry chain, the TD-SCDMA _Co system may not only have the low cost of network construction, but also economically offer services. Besides, it may expediently implement indoor and outdoor coverage. The TD-SCDMA _Co system may enter into the mobile communication, terrestrial ＂IV broadcasting, family and mobile IPTV, and other markets.
出处
《中兴通讯技术》
2006年第4期54-56,共3页
ZTE Technology Journal
基金
国家"863"计划项目(2005AA123940)
