📄 g7-3.htm
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</SPAN><FONT color=#0000cc>(3) 闭锁PLMN问路<O:P>
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face=楷体_GB2312>这种功能在图7-2中所配置的数据字段为6F7B，用于存储4个不允许移动设备自动进入的PLMN网路。因每个PLMN由移动国家码(MCC)和移动网路码(MNC)表示，需要3字节的容量，所以共需12字节的容量。<O:P>
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</SPAN><FONT color=#0000cc>(4) 位置信息<O:P>
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face=楷体_GB2312>这种功能在图7-2中所配置的数据字段为6F7E，用于存储客户临时身份识别(TMSI)、位置区识别(LAI)、临时身份的有效时间(TMSITIME)、位置更新状态。这样，既能保证客户的移动性，又能很快地寻找到客户移动后的新位置。TMSI需要4字节的容量，LAI需要5字节的容量，TMSITIME需要1字节的容量，共需要ll字节容量。<O:P><BR><BR>
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</SPAN><FONT color=#0000cc>(5) 加密密钥(Kc)及它的序列号码(n)<O:P>
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color=#000066>这种功能在图7-2中所配置的数据字段为6F20，用于存储加密密钥(Kc)和它的序列号码(n)。Kc是客户信息加解密A5算法的入口参数，需要8字节的容量。n是代表Kc可在空中接口上传输代号，通常需要3比特容量，一般给予1字节容量。<O:P></O:P></FONT></FONT></SPAN></P>
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</SPAN><FONT color=#0000cc>(6) PLMN选择器<O:P> </O:P></FONT><FONT
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face=楷体_GB2312>这种功能在图7-2中所配置的数据字段为6F30，用于客户或运营者选择使用PLMN网路的优先次序。至少能存储8个PLMN
代号，每个需要3字节容量，共24字节的容量。<BR><BR></FONT></FONT></SPAN></FONT></P>
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</SPAN><FONT color=#0000cc>(7) 广播控制信道信息(BCCH)<O:P>
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face=楷体_GB2312>这种功能在图7-2中所配置的数据字段为6F74，用于存储加快呼叫连接进程的BCCH。即在选择小区时，可以缩小移动台对
BCCH载波的搜索范围。需要容量共16字节。</FONT><O:P>
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</SPAN><FONT color=#0000cc>(8) 接入控制<O:P>
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face=楷体_GB2312>这种功能在图7-2中所配置的数据字段为6F78，用于存储客户接入控制等级。在15个等级中，有l0个等级可分配给一般的客户，5个等级分配给有高、优先权的客户，所以共需2个字节。<O:P>
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</SPAN><FONT color=#0000cc>(9) 被叫客户子地址<O:P>
</O:P></FONT><O:P></O:P></FONT></SPAN></FONT></P>
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