Why Adopt Layered System Structure for WCDMA?

wcdma为什么采用分层式体系结构?

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Now, there are several common system architecture such as data abstraction and OO organization, layered system.

目前, 已有一些公用的体系结构问世,如数据抽象和面向对象组织(dataabstraction andOO organization) 、 层次式系统(layeredsystem )等.

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