New Transport Layer Architecture(TLA) for Pervasive Service 支持普适服务的新一代网络传输层构架
There are four types of field bus depend on whether the network layer and / or the transport layer being used or not. By comparing the functions and the costs as well as effectiveness, the architecture using four layers including the transport layer is more adequate. 按是否使用网络层和(或)传送层,可构成四种适用的现场总线,并根据功能成本和性能比,选用传送层四层体系结构比较适宜。