SSL是一种协议，该协议会对终端用户和Web服务器间的网络通信进行加密。
SSL is a protocol that encrypts network communication to and from an end user and a Web server.
这一层的主要用途是为了定义在网络间交换蜂窝网络用户信息的应用层协议。
The purpose of this layer is to define the application layer protocol for the exchange of cellular subscriber information between networks.
提出时分多址方式下由固定中继节点支持的透明模式下的随机接入协议，通过中继节点与用户间的合作重传来解决多个用户同时接入发生碰撞的问题。
A new random access protocol assisted by fixed relay stations under the transparent mode in multi-hop relay networks over the time division multiple access was presented.
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