The hardware of this system is based on the layer distribution structure of the IPC data collecting system and the network communication of upper and lower computers.
该系统硬件采用基于I P C的数据采集系统及上、下位机网络通信的分层分布结构；
Finally, we deliver the designed MAC layer, network layer protocol and the related upper application into GAINZ nodes, to measure network-building, data transmission and GPRS connectivity.
论文最后把所设计的MAC层、网络层协议及相关上层应用实施到GAINZ节点中，实测网络构建、数据传输和GPRS连接功能。
Theoretical analysis demonstrates that the new method is transparent to the upper layer applications and underlying network services, backward compatible, easy to deploy and cost effective.
理论分析表明，该技术具有对上层应用和底层网络服务透明、节省开销、部署灵活、向后兼容等优点。
The signalling connection is used between the user equipment and the core network to transfer upper layer information.
信令连接用于在用户设备和核心网之间传输上层信息。
The signalling connection is used between the user equipment and the core network to transfer upper layer information.
信令连接用于在用户设备和核心网之间传输上层信息。
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