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1·The S1 signalling link management function provides a reliable transfer of the radio network signalling between E-UTRAN and EPC.

S1信令连接管理功能提供E - U TRAN和EPC之间的无线网络信令的可靠传输。

2·The E-UTRAN architecture, i. e. the E-UTRAN logical nodes and interfaces between them, are defined as part of the Radio Network Layer.

E-UTRAN结构，也就是指E-UTRAN的逻辑节点和节点之间的接口，作为无线网络层的一部分被定义。

3·It analyses the challenge UTRAN has to face and the transmission requirement of 3G UTRAN, also puts forward UTRAN carrying scheme of Alcatel Shanghai Bell.

分析了UTRAN面临的挑战与3G UTRAN传输需求，提出了上海贝尔阿尔卡特的UTRAN承载方案。

4·The purpose of the integrity check is to make sure that the signalling continues between the same elements as by authentication. The integrity check shall be done within the E-UTRAN.

完整性检查的目的是保证信令是在通过鉴权的相同的网元间继续，完整性检查将在E-UTRAN中完成。