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src="https://static.pudn.com/prod/directory_preview_static/6274d70c445c3651d2935bb0/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x2 h4 y3 ff2 fs0 fc0 sc1 ls0 ws0">网络安全威胁概述</div><div class="t m0 x3 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x4 h6 y5 ff4 fs2 fc0 sc0 ls0 ws0"> Y<span class="_ _0"></span>ongsuk Park</div><div class="t m0 x1 h7 y6 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x5 h6 y5 ff4 fs2 fc0 sc0 ls0 ws0">IEEE</div><div class="t m0 x6 h7 y6 ff2 fs2 fc0 sc0 ls0 ws0">会员</div><div class="t m0 x7 h6 y5 ff4 fs2 fc0 sc0 ls0 ws0"> T<span class="_ _1"></span>aejoon Park</div><div class="t m0 x8 h7 y6 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x9 h6 y5 ff4 fs2 fc0 sc0 ls0 ws0">IEEE</div><div class="t m0 xa h7 y6 ff2 fs2 fc0 sc0 ls0 ws0">会员</div><div class="t m0 x3 h8 y7 ff2 fs1 fc0 sc1 ls0 ws0">摘要<span class="_ _2"></span><span class="sc0">：许<span class="_ _2"></span>多通<span class="_ _2"></span>信协<span class="_ _2"></span>会例如<span class="_ _2"></span>国际<span class="_ _2"></span>电联和</span></div><div class="t m0 xb h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">IEEE</div><div class="t m0 xc h8 y7 ff2 fs1 fc0 sc0 ls0 ws0">正在<span class="_ _2"></span>致力<span class="_ _2"></span>工作<span class="_ _2"></span>于第<span class="_ _2"></span>四代（</div><div class="t m0 xd h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 xe h8 y7 ff2 fs1 fc0 sc0 ls0 ws0">）通<span class="_ _2"></span>信。</div><div class="t m0 x3 h8 y9 ff2 fs1 fc0 sc0 ls0 ws0">本<span class="_ _2"></span>文提<span class="_ _2"></span>供了<span class="_ _2"></span>关<span class="_ _2"></span>于<span class="_ _2"></span>网络<span class="_ _2"></span>安全<span class="_ _2"></span>体系<span class="_ _2"></span>结<span class="_ _2"></span>构标<span class="_ _2"></span>准化<span class="_ _3"></span>工<span class="_ _2"></span>作的<span class="_ _2"></span>概述<span class="_ _2"></span>和</div><div class="t m0 xf h5 ya ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x10 h8 y9 ff2 fs1 fc0 sc0 ls0 ws0">网<span class="_ _2"></span>络安<span class="_ _2"></span>全威<span class="_ _2"></span>胁的<span class="_ _2"></span>调</div><div class="t m0 x3 h8 yb ff2 fs1 fc0 sc0 ls0 ws0">查。我<span class="_ _2"></span>们的调查表明</div><div class="t m0 x11 h5 yc ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x12 h8 yb ff2 fs1 fc0 sc0 ls0 ws0">很多新<span class="_ _2"></span>的安全威胁所<span class="_ _2"></span>导致的意想不<span class="_ _2"></span>到的服务中断<span class="_ _2"></span>和信息披</div><div class="t m0 x3 h8 yd ff2 fs1 fc0 sc0 ls0 ws0">露在</div><div class="t m0 x13 h5 ye ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x14 h8 yd ff2 fs1 fc0 sc0 ls0 ws0">网络<span class="_ _2"></span>上将可<span class="_ _2"></span>能发生，<span class="_ _2"></span>主要因<span class="_ _2"></span>为</div><div class="t m0 x15 h5 ye ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x16 h8 yd ff2 fs1 fc0 sc0 ls0 ws0">网络<span class="_ _2"></span>是基于</div><div class="t m0 x17 h5 ye ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x18 h8 yd ff2 fs1 fc0 sc0 ls0 ws0">的</div><div class="t m0 x19 h5 ye ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x1a h8 yd ff2 fs1 fc0 sc0 ls0 ws0">异构<span class="_ _2"></span>的网络<span class="_ _2"></span>。我们</div><div class="t m0 x3 h8 yf ff2 fs1 fc0 sc0 ls0 ws0">也<span class="_ _2"></span>发现<span class="_ _2"></span>仍然<span class="_ _2"></span>存在<span class="_ _2"></span>一<span class="_ _2"></span>些悬<span class="_ _2"></span>而未<span class="_ _2"></span>决的<span class="_ _2"></span>问<span class="_ _2"></span>题，<span class="_ _3"></span>尽<span class="_ _2"></span>管<span class="_ _2"></span>很多<span class="_ _2"></span>人<span class="_ _2"></span>正在<span class="_ _2"></span>为了</div><div class="t m0 x1b h5 y10 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x1c h8 yf ff2 fs1 fc0 sc0 ls0 ws0">修<span class="_ _2"></span>复网<span class="_ _2"></span>络<span class="_ _2"></span>或设</div><div class="t m0 x3 h8 y11 ff2 fs1 fc0 sc0 ls0 ws0">计新的安全架构。</div><div class="t m0 x3 h8 y12 ff2 fs1 fc0 sc1 ls0 ws0">关<span class="_ _2"></span>键字<span class="_ _2"></span><span class="sc0">：<span class="_ _2"></span>网络<span class="_ _2"></span>安全<span class="_ _2"></span>，安<span class="_ _2"></span>全<span class="_ _2"></span>体系<span class="_ _2"></span>，</span></div><div class="t m0 x1d h5 y13 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x1e h8 y12 ff2 fs1 fc0 sc0 ls0 ws0">，</div><div class="t m0 x1f h5 y13 ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x20 h8 y12 ff2 fs1 fc0 sc0 ls0 ws0">，</div><div class="t m0 x21 h5 y13 ff3 fs1 fc0 sc0 ls0 ws0">3GPP</div><div class="t m0 x22 h8 y12 ff2 fs1 fc0 sc0 ls0 ws0">，<span class="_ _2"></span>下一<span class="_ _2"></span>代网<span class="_ _2"></span>络，</div><div class="t m0 x23 h9 y14 ff2 fs3 fc0 sc0 ls0 ws0">下<span class="_ _2"></span>一代<span class="_ _2"></span>移</div><div class="t m0 x3 h9 y15 ff2 fs3 fc0 sc0 ls0 ws0">动通信网。</div><div class="t m0 x3 h5 y16 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y17 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x24 ha y18 ff2 fs4 fc0 sc1 ls0 ws0">一。导言</div><div class="t m0 x3 h5 y19 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> </div><div class="t m0 x25 h8 y1a ff2 fs1 fc0 sc0 ls0 ws0">随着<span class="_ _2"></span>第三代（</div><div class="t m0 x26 h5 y19 ff3 fs1 fc0 sc0 ls0 ws0">3G</div><div class="t m0 x27 h8 y1a ff2 fs1 fc0 sc0 ls0 ws0">）通<span class="_ _2"></span>信正在向<span class="_ _2"></span>第四代<span class="_ _2"></span>（</div><div class="t m0 x28 h5 y19 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x29 h8 y1a ff2 fs1 fc0 sc0 ls0 ws0">）通<span class="_ _2"></span>信演进<span class="_ _2"></span>，很多<span class="_ _2"></span>协会都在<span class="_ _2"></span>为自</div><div class="t m0 x3 h8 y1b ff2 fs1 fc0 sc0 ls0 ws0">己<span class="_ _4"> </span>进<span class="_ _4"> </span>入</div><div class="t m0 x2a h5 y1c ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x2b h8 y1b ff2 fs1 fc0 sc0 ls0 ws0">做<span class="_ _4"> </span>准<span class="_ _4"> </span>备<span class="_ _4"> </span>：</div><div class="t m0 x2c h5 y1c ff3 fs1 fc0 sc0 ls0 ws0">IEEE802.16m</div><div class="t m0 x2d h8 y1b ff2 fs1 fc0 sc0 ls0 ws0">也<span class="_ _4"> </span>正<span class="_ _4"> </span>在<span class="_ _4"> </span>使<span class="_ _4"> </span>自<span class="_ _4"> </span>己<span class="_ _4"> </span>的<span class="_ _4"> </span>标<span class="_ _4"> </span>准<span class="_ _4"> </span>适<span class="_ _4"> </span>应<span class="_ _4"> </span>于</div><div class="t m0 x2e h5 y1c ff3 fs1 fc0 sc0 ls0 ws0">IMT<span class="_ _1"></span>-</div><div class="t m0 x3 h5 y1d ff3 fs1 fc0 sc0 ls0 ws0">Advanced</div><div class="t m0 x2f h8 y1e ff2 fs1 fc0 sc0 ls0 ws0">（<span class="_ _2"></span>一种<span class="_ _2"></span>超<span class="_ _2"></span>越了</div><div class="t m0 x30 h5 y1d ff3 fs1 fc0 sc0 ls0 ws0">IMT2000</div><div class="t m0 x31 h8 y1e ff2 fs1 fc0 sc0 ls0 ws0">的<span class="_ _2"></span>国际<span class="_ _2"></span>移<span class="_ _2"></span>动通<span class="_ _2"></span>信<span class="_ _2"></span>系统<span class="_ _2"></span>）<span class="_ _2"></span>，正<span class="_ _2"></span>致<span class="_ _2"></span>力于<span class="_ _2"></span>下<span class="_ _2"></span>一<span class="_ _2"></span>代网</div><div class="t m0 x3 h8 y1f ff2 fs1 fc0 sc0 ls0 ws0">络的</div><div class="t m0 x13 h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">ITU</div><div class="t m0 x14 h8 y1f ff2 fs1 fc0 sc0 ls0 ws0">（国际电信<span class="_ _2"></span>联盟）在</div><div class="t m0 x32 h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">2007</div><div class="t m0 x33 h8 y1f ff2 fs1 fc0 sc0 ls0 ws0">年</div><div class="t m0 x1f h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">10</div><div class="t m0 x34 h8 y1f ff2 fs1 fc0 sc0 ls0 ws0">月讨论了</div><div class="t m0 x35 hb y21 ff4 fs1 fc0 sc0 ls0 ws0">IMT<span class="_ _0"></span>-Advanced</div><div class="t m0 x36 h8 y1f ff2 fs1 fc0 sc0 ls0 ws0">的频率和带宽<span class="_ _2"></span>，</div><div class="t m0 x3 h8 y22 ff2 fs1 fc0 sc0 ls0 ws0">而且</div><div class="t m0 x13 h5 y23 ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x37 h8 y22 ff2 fs1 fc0 sc0 ls0 ws0">（</div><div class="t m0 x38 h9 y24 ff2 fs3 fc0 sc0 ls0 ws0">全球微波互联接入</div><div class="t m0 x39 h8 y22 ff2 fs1 fc0 sc0 ls0 ws0">）也正在研究基于</div><div class="t m0 x3a h5 y23 ff3 fs1 fc0 sc0 ls0 ws0">IEEE 802.16</div><div class="t m0 x3b h8 y22 ff2 fs1 fc0 sc0 ls0 ws0">宽带无线系统。</div><div class="t m0 x3 h8 y25 ff2 fs1 fc0 sc0 ls0 ws0">此<span class="_ _5"></span>外<span class="_ _5"></span>，<span class="_ _5"></span>如<span class="_ _5"></span>沃<span class="_ _5"></span>达<span class="_ _5"></span>丰<span class="_ _5"></span>和<span class="_ _5"></span>中<span class="_ _5"></span>国<span class="_ _5"></span>移<span class="_ _5"></span>动<span class="_ _5"></span>通<span class="_ _5"></span>信<span class="_ _5"></span>公<span class="_ _5"></span>司<span class="_ _5"></span>和<span class="_ _5"></span>摩<span class="_ _5"></span>托<span class="_ _5"></span>罗<span class="_ _5"></span>拉<span class="_ _5"></span>和<span class="_ _5"></span>三<span class="_ _5"></span>星<span class="_ _6"> </span>公<span class="_ _5"></span>司<span class="_ _5"></span>也<span class="_ _5"></span>也<span class="_ _5"></span>组<span class="_ _5"></span>织<span class="_ _5"></span>了</div><div class="t m0 x3 h5 y26 ff3 fs1 fc0 sc0 ls0 ws0">NGMN</div><div class="t m0 x4 h8 y27 ff2 fs1 fc0 sc0 ls0 ws0">（<span class="_ _2"></span>下一<span class="_ _2"></span>代移<span class="_ _2"></span>动网<span class="_ _2"></span>络<span class="_ _2"></span>），<span class="_ _2"></span>这些<span class="_ _2"></span>都是<span class="_ _2"></span>为<span class="_ _2"></span>了能<span class="_ _2"></span>为</div><div class="t m0 x3a h5 y26 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x3c h8 y27 ff2 fs1 fc0 sc0 ls0 ws0">网<span class="_ _2"></span>络提<span class="_ _2"></span>供低<span class="_ _2"></span>成本<span class="_ _2"></span>高<span class="_ _2"></span>效率<span class="_ _2"></span>的</div><div class="t m0 x3 h8 y28 ff2 fs1 fc0 sc0 ls0 ws0">解<span class="_ _3"></span>决<span class="_ _5"></span>方<span class="_ _3"></span>案<span class="_ _5"></span>，<span class="_ _3"></span>还<span class="_ _3"></span>有</div><div class="t m0 x3d h5 y29 ff3 fs1 fc0 sc0 ls0 ws0">Sprint<span class="_ _2"></span> <span class="_ _2"></span>Nextel</div><div class="t m0 x3e h8 y28 ff2 fs1 fc0 sc0 ls0 ws0">电<span class="_ _3"></span>信<span class="_ _5"></span>公<span class="_ _3"></span>司<span class="_ _5"></span>也<span class="_ _3"></span>正<span class="_ _3"></span>在<span class="_ _5"></span>部<span class="_ _3"></span>署<span class="_ _5"></span>在<span class="_ _3"></span>美<span class="_ _3"></span>国<span class="_ _5"></span>和<span class="_ _3"></span>加<span class="_ _5"></span>拿<span class="_ _3"></span>大<span class="_ _3"></span>的<span class="_ _5"></span>移<span class="_ _3"></span>动</div><div class="t m0 x3 h5 y2a ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x3f h8 y2b ff2 fs1 fc0 sc0 ls0 ws0">。</div><div class="t m0 x40 hb y2c ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y2d ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x41 h8 y2e ff2 fs1 fc0 sc0 ls0 ws0">然而</div><div class="t m0 x42 h5 y2d ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x43 h8 y2e ff2 fs1 fc0 sc0 ls0 ws0">许多</div><div class="t m0 x2b h5 y2d ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x44 h8 y2e ff2 fs1 fc0 sc0 ls0 ws0">的定义可用的</div><div class="t m0 x32 h5 y2d ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x45 h8 y2e ff2 fs1 fc0 sc0 ls0 ws0">应当提供的带宽在移动中为</div><div class="t m0 x46 h5 y2d ff3 fs1 fc0 sc0 ls0 ws0">100MB /s</div><div class="t m0 x47 h8 y2e ff2 fs1 fc0 sc0 ls0 ws0">，游离中为</div><div class="t m0 x3 h5 y2f ff3 fs1 fc0 sc0 ls0 ws0">1Gb/s,</div><div class="t m0 x48 h8 y30 ff2 fs1 fc0 sc0 ls0 ws0">而<span class="_ _2"></span>且这<span class="_ _2"></span>是一<span class="_ _2"></span>种完<span class="_ _2"></span>全<span class="_ _2"></span>基于</div><div class="t m0 x49 h5 y2f ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x4a h8 y30 ff2 fs1 fc0 sc0 ls0 ws0">的<span class="_ _2"></span>异构<span class="_ _2"></span>网络<span class="_ _2"></span>，其<span class="_ _2"></span>中<span class="_ _2"></span>多种</div><div class="t m0 x4b h5 y2f ff3 fs1 fc0 sc0 ls0 ws0">RA<span class="_ _0"></span>T</div><div class="t m0 x10 h8 y30 ff2 fs1 fc0 sc0 ls0 ws0">（<span class="_ _2"></span>无线<span class="_ _2"></span>接入<span class="_ _2"></span>技术<span class="_ _2"></span>）</div><div class="t m0 x3 h8 y31 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x4c h5 y32 ff3 fs1 fc0 sc0 ls0 ws0">RANs</div><div class="t m0 x14 h8 y31 ff2 fs1 fc0 sc0 ls0 ws0">（<span class="_ _3"></span>无<span class="_ _5"></span>线<span class="_ _3"></span>接<span class="_ _5"></span>入<span class="_ _3"></span>网<span class="_ _3"></span>络<span class="_ _5"></span>）<span class="_ _3"></span>可<span class="_ _5"></span>以<span class="_ _3"></span>进<span class="_ _3"></span>行<span class="_ _5"></span>互<span class="_ _3"></span>操<span class="_ _3"></span>作<span class="_ _5"></span>。</div><div class="t m0 x4d h5 y32 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x4e h8 y31 ff2 fs1 fc0 sc0 ls0 ws0">的<span class="_ _3"></span>一<span class="_ _5"></span>些<span class="_ _3"></span>基<span class="_ _5"></span>本<span class="_ _3"></span>的<span class="_ _3"></span>支<span class="_ _5"></span>撑<span class="_ _3"></span>技<span class="_ _5"></span>术<span class="_ _3"></span>有</div><div class="t m0 x3 h5 y33 ff3 fs1 fc0 sc0 ls0 ws0">OFDM(</div><div class="t m0 x3f h8 y34 ff2 fs1 fc0 sc0 ls0 ws0">正交<span class="_ _2"></span>频分复用</div><div class="t m0 x12 h5 y33 ff3 fs1 fc0 sc0 ls0 ws0">).OFDMA</div><div class="t m0 x4f h8 y34 ff2 fs1 fc0 sc0 ls0 ws0">技术</div><div class="t m0 x50 h5 y33 ff3 fs1 fc0 sc0 ls0 ws0">(</div><div class="t m0 x51 h8 y34 ff2 fs1 fc0 sc0 ls0 ws0">正交<span class="_ _2"></span>频分多址<span class="_ _2"></span>接入</div><div class="t m0 x52 h5 y33 ff3 fs1 fc0 sc0 ls0 ws0">)</div><div class="t m0 x4b h8 y34 ff2 fs1 fc0 sc0 ls0 ws0">，和<span class="_ _2"></span>垂直移<span class="_ _2"></span>交协议<span class="_ _2"></span>。此</div><div class="t m0 x3 h8 y35 ff2 fs1 fc0 sc0 ls0 ws0">外，还有一<span class="_ _2"></span>些最新技术如包括</div><div class="t m0 x32 h5 y36 ff3 fs1 fc0 sc0 ls0 ws0">MIMO</div><div class="t m0 x53 h8 y35 ff2 fs1 fc0 sc0 ls0 ws0">技术</div><div class="t m0 x9 h5 y36 ff3 fs1 fc0 sc0 ls0 ws0">(</div><div class="t m0 x54 h8 y35 ff2 fs1 fc0 sc0 ls0 ws0">多输入多输出</div><div class="t m0 x55 h5 y36 ff3 fs1 fc0 sc0 ls0 ws0">)</div><div class="t m0 x56 h8 y35 ff2 fs1 fc0 sc0 ls0 ws0">，可重构系统<span class="_ _2"></span>和认知无</div><div class="t m0 x3 h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">线<span class="_ _2"></span>电网<span class="_ _2"></span>络<span class="_ _2"></span>，</div><div class="t m0 x57 h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x38 h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">的<span class="_ _2"></span>应用<span class="_ _2"></span>可能<span class="_ _2"></span>包括</div><div class="t m0 x58 h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x59 h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">电<span class="_ _2"></span>话</div><div class="t m0 x1f h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">(V<span class="_ _1"></span>oIP)</div><div class="t m0 x5a h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">，<span class="_ _2"></span>多媒<span class="_ _2"></span>体教<span class="_ _2"></span>学模<span class="_ _2"></span>式</div><div class="t m0 x5b h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">(</div><div class="t m0 x5c h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">按<span class="_ _2"></span>需</div><div class="t m0 xd h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">)</div><div class="t m0 x5d h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">、<span class="_ _2"></span>游戏<span class="_ _2"></span>和</div><div class="t m0 x3 h8 y39 ff2 fs1 fc0 sc0 ls0 ws0">一般宽带无线移动互联网服务。</div><div class="t m0 x3e h5 y3a ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y3b ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> 4G</div><div class="t m0 x5e h8 y3c ff2 fs1 fc0 sc0 ls0 ws0">的实<span class="_ _2"></span>质是要建<span class="_ _2"></span>立了一个<span class="_ _2"></span>开放的平<span class="_ _2"></span>台环境</div><div class="t m0 x20 h5 y3b ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x29 h8 y3c ff2 fs1 fc0 sc0 ls0 ws0">不同<span class="_ _2"></span>的网络运<span class="_ _2"></span>营商和<span class="_ _2"></span>服务供应<span class="_ _2"></span>商</div><div class="t m0 x3 h8 y3d ff2 fs1 fc0 sc0 ls0 ws0">通过开放式接口共享核心基础设施，而且最终用户终端可以使用开放的</div><div class="t m0 x5f h5 y3e ff3 fs1 fc0 sc0 ls0 ws0">H / W</div><div class="t m0 x60 h8 y3d ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x3 h5 y3f ff3 fs1 fc0 sc0 ls0 ws0">S <span class="_ _2"></span>/ W</div><div class="t m0 x61 h8 y40 ff2 fs1 fc0 sc0 ls0 ws0">的平<span class="_ _2"></span>台</div><div class="t m0 x37 h5 y3f ff3 fs1 fc0 sc0 ls0 ws0">.4G</div><div class="t m0 x62 hc y40 ff2 fs1 fc0 sc0 ls0 ws0">的开<span class="_ _2"></span>放性<span class="_ _2"></span>带来更<span class="_ _2"></span>多的安<span class="_ _2"></span>全方<span class="_ _2"></span>面的挑<span class="_ _2"></span>战，<span class="_ _2"></span>他不<span class="_ _2"></span><span class="ff5">像传</span>统<span class="_ _2"></span>的<span class="ff5">封<span class="_ _2"></span>闭</span>环境</div><div class="t m0 x3 h8 y41 ff2 fs1 fc0 sc0 ls0 ws0">下的网络</div><div class="t m0 x63 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">(</div><div class="t m0 x40 h8 y41 ff2 fs1 fc0 sc0 ls0 ws0">例如</div><div class="t m0 x64 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">PSTNs),</div><div class="t m0 x65 hc y41 ff2 fs1 fc0 sc0 ls0 ws0">有着应<span class="ff5">对</span>安<span class="_ _2"></span>全威胁挑战的<span class="ff5">固</span>有<span class="ff5">优势</span></div><div class="t m0 x66 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x67 hc y41 ff5 fs1 fc0 sc0 ls0 ws0">从<span class="ff2">当</span>前<span class="ff2">的一<span class="_ _2"></span>代网络来</span></div><div class="t m0 x3 hc y43 ff5 fs1 fc0 sc0 ls0 ws0">看<span class="ff2">，如<span class="_ _2"></span></span>果<span class="ff2">安全威胁问<span class="_ _2"></span>题不能完全解<span class="_ _2"></span>决的话，很<span class="_ _2"></span></span>快</div><div class="t m0 x21 h5 y44 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x68 hc y43 ff2 fs1 fc0 sc0 ls0 ws0">网络也<span class="_ _2"></span>同<span class="ff5">样</span>会<span class="ff5">遭受<span class="_ _2"></span></span>和<span class="ff5">今天</span>我</div><div class="t m0 x3 hc y45 ff2 fs1 fc0 sc0 ls0 ws0">们所<span class="ff5">经<span class="_ _2"></span>历</span>的同<span class="ff5">样程<span class="_ _2"></span>度</span>的威胁。<span class="_ _2"></span>因此，<span class="ff5">保证<span class="_ _2"></span></span>高<span class="ff5">水</span>平的安<span class="_ _2"></span>全性是</div><div class="t m0 x19 h5 y46 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x3b hc y45 ff2 fs1 fc0 sc0 ls0 ws0">网络成<span class="_ _2"></span><span class="ff5">功</span>发<span class="ff5">展</span>的</div><div class="t m0 x3 hc y47 ff2 fs1 fc0 sc0 ls0 ws0">重要<span class="ff5">条件之</span>一。</div><div class="t m0 x3 h5 y48 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> </div><div class="t m0 x69 hc y49 ff5 fs1 fc0 sc0 ls0 ws0">除<span class="_ _2"></span><span class="ff2">了上<span class="_ _2"></span>述技<span class="_ _2"></span>术方面<span class="_ _2"></span>的<span class="_ _2"></span></span>原<span class="ff2">因</span></div><div class="t m0 x6a h5 y48 ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x32 hc y49 ff2 fs1 fc0 sc0 ls0 ws0">网络<span class="_ _2"></span>和服<span class="_ _2"></span>务提<span class="_ _2"></span>供商<span class="_ _2"></span><span class="ff5">必须<span class="_ _2"></span>确保<span class="_ _2"></span></span>其基<span class="_ _2"></span>础设<span class="_ _2"></span>施和<span class="_ _2"></span>服务<span class="_ _2"></span><span class="ff5">得</span></div><div class="t m0 x3 hc y4a ff2 fs1 fc0 sc0 ls0 ws0">以<span class="ff5">充<span class="_ _2"></span></span>分<span class="ff5">保护</span></div><div class="t m0 x6b h5 y4b ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x6c hc y4a ff5 fs1 fc0 sc0 ls0 ws0">免受<span class="_ _2"></span>各<span class="ff2">种威<span class="_ _2"></span>胁</span></div><div class="t m0 x7 h5 y4b ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x6d hc y4a ff5 fs1 fc0 sc0 ls0 ws0">并<span class="ff2">且<span class="_ _2"></span>提供终端<span class="_ _2"></span>用户以安<span class="_ _2"></span>全的<span class="_ _2"></span></span>访<span class="ff2">问</span></div><div class="t m0 x6e h5 y4b ff3 fs1 fc0 sc0 ls0 ws0">/</div><div class="t m0 x19 h8 y4a ff2 fs1 fc0 sc0 ls0 ws0">服务</div><div class="t m0 x6f h5 y4b ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x36 hc y4a ff2 fs1 fc0 sc0 ls0 ws0">这意<span class="_ _2"></span><span class="ff5">味</span>着为了</div><div class="t m0 x3 hc y4c ff2 fs1 fc0 sc0 ls0 ws0">使多媒体服务成<span class="ff5">功</span>的<span class="ff5">走</span>向<span class="ff5">市场</span>，他们<span class="ff5">必须确保</span>网络基础设施的安全性</div><div class="t m0 x70 h5 y4d ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x71 hc y4c ff2 fs1 fc0 sc0 ls0 ws0">可<span class="ff5">判</span>断</div><div class="t m0 x72 h5 y4d ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x60 hc y4c ff5 fs1 fc0 sc0 ls0 ws0">对</div><div class="t m0 x3 hc y4e ff2 fs1 fc0 sc0 ls0 ws0">安全的<span class="_ _2"></span>网络和服务方<span class="_ _2"></span>面的的需<span class="_ _2"></span><span class="ff5">求</span>将<span class="ff5">继续增<span class="_ _2"></span>长</span></div><div class="t m0 x73 h5 y4f ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x5a hc y4e ff2 fs1 fc0 sc0 ls0 ws0">因为安<span class="_ _2"></span>全性将很<span class="ff5">快<span class="_ _2"></span></span>使他们<span class="ff5">与众<span class="_ _2"></span></span>不同，</div><div class="t m0 x3 hc y50 ff5 fs1 fc0 sc0 ls0 ws0">脱颖<span class="ff2">而出。</span></div><div class="t m0 x74 h5 y51 ff3 fs1 fc0 sc0 ls0 ws0"> </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6274d70c445c3651d2935bb0/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x3 hb y52 ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x61 hc y53 ff2 fs1 fc0 sc0 ls0 ws0">本文<span class="ff5">介绍</span>了关于</div><div class="t m0 x75 h5 y54 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x76 hc y53 ff2 fs1 fc0 sc0 ls0 ws0">网络可能的安全威胁的全面调查。本文的主要<span class="ff5">贡献</span>是：</div><div class="t m0 x3 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0"> •</div><div class="t m0 x77 hc y55 ff5 fs1 fc0 sc0 ls0 ws0">监督</div><div class="t m0 x4 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x78 hc y55 ff2 fs1 fc0 sc0 ls0 ws0">系统的网络<span class="ff5">与</span>安全架构的<span class="ff5">历史</span>演<span class="ff5">变</span>，</div><div class="t m0 x3 h5 y56 ff3 fs1 fc0 sc0 ls0 ws0"> •</div><div class="t m0 x77 hc y57 ff5 fs1 fc0 sc0 ls0 ws0">指<span class="ff2">出了当</span>前<span class="ff2">的一些<span class="_ _2"></span>安全系统，包括</span></div><div class="t m0 x79 h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">WiFi</div><div class="t m0 x54 h8 y57 ff2 fs1 fc0 sc0 ls0 ws0">，</div><div class="t m0 x73 h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x4e h8 y57 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x7a h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">3GPP</div><div class="t m0 x7b hc y57 ff2 fs1 fc0 sc0 ls0 ws0">（第三代<span class="ff5">合</span>作<span class="ff5">伙伴</span></div><div class="t m0 x3 hc y58 ff2 fs1 fc0 sc0 ls0 ws0">计<span class="ff5">划</span>）<span class="_ _7"></span>，</div><div class="t m0 x7c h5 y59 ff3 fs1 fc0 sc0 ls0 ws0">NGN</div><div class="t m0 x7d hc y58 ff2 fs1 fc0 sc0 ls0 ws0">的<span class="ff5">潜</span>在<span class="ff5">弊</span>端。</div><div class="t m0 x7e h5 y8 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> </div><div class="t m0 x7f hc y7 ff2 fs1 fc0 sc0 ls0 ws0">本文<span class="_ _2"></span>的其<span class="_ _2"></span><span class="ff5">余</span>部<span class="_ _2"></span>分组<span class="_ _2"></span>织如<span class="_ _2"></span>下</div><div class="t m0 x80 h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x4a hc y7 ff2 fs1 fc0 sc0 ls0 ws0">第<span class="_ _2"></span><span class="ff5">二节<span class="_ _2"></span>对</span></div><div class="t m0 x81 h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x82 h8 y7 ff2 fs1 fc0 sc0 ls0 ws0">网<span class="_ _2"></span>络架<span class="_ _2"></span>构做出<span class="_ _2"></span>了的<span class="_ _2"></span>概述</div><div class="t m0 xd h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x5d hc y7 ff2 fs1 fc0 sc0 ls0 ws0">第<span class="_ _2"></span>三<span class="ff5">节<span class="_ _2"></span>描</span></div><div class="t m0 x3 h8 y9 ff2 fs1 fc0 sc0 ls0 ws0">述了</div><div class="t m0 x13 h5 ya ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x14 h8 y9 ff2 fs1 fc0 sc0 ls0 ws0">的安<span class="_ _2"></span>全架<span class="_ _2"></span>构网络</div><div class="t m0 x30 h5 ya ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x76 hc y9 ff2 fs1 fc0 sc0 ls0 ws0">在第<span class="_ _2"></span>四<span class="ff5">节</span></div><div class="t m0 x83 h5 ya ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x84 hc y9 ff2 fs1 fc0 sc0 ls0 ws0">我们<span class="_ _2"></span><span class="ff5">简单<span class="_ _2"></span>介绍</span>一<span class="_ _2"></span>下国<span class="_ _2"></span>际电联</div><div class="t m0 x85 h5 ya ff3 fs1 fc0 sc0 ls0 ws0">X.805[10],</div><div class="t m0 x2e hc y9 ff2 fs1 fc0 sc0 ls0 ws0">而<span class="ff5">对</span></div><div class="t m0 x3 h5 yc ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x69 hc yb ff2 fs1 fc0 sc0 ls0 ws0">系统的威胁分<span class="ff5">析</span>是在第<span class="ff5">五节给</span>出，最<span class="ff5">后</span></div><div class="t m0 x86 h5 yc ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x87 hc yb ff2 fs1 fc0 sc0 ls0 ws0">本文第<span class="ff5">六节</span>结论。</div><div class="t m0 x3 hd y5a ff5 fs4 fc0 sc1 ls0 ws0">二．<span class="ff2">网络体系结构</span></div><div class="t m0 x3 h5 y5b ff3 fs1 fc0 sc0 ls0 ws0"> <span class="ff1"> A</span></div><div class="t m0 x88 h8 y11 ff2 fs1 fc0 sc1 ls0 ws0">：</div><div class="t m0 x13 h5 y5b ff1 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x14 h8 y11 ff2 fs1 fc0 sc1 ls0 ws0">网络</div><div class="t m0 x3 h5 y5c ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> </div><div class="t m0 x25 hc y5d ff5 fs1 fc0 sc0 ls0 ws0">图</div><div class="t m0 x89 h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">1</div><div class="t m0 x7c h8 y5d ff2 fs1 fc0 sc0 ls0 ws0">中的</div><div class="t m0 x2b h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">4G</div><div class="t m0 x8a hc y5d ff2 fs1 fc0 sc0 ls0 ws0">网络<span class="_ _2"></span>是一<span class="_ _2"></span>种<span class="ff5">收敛<span class="_ _2"></span></span>的多<span class="_ _2"></span><span class="ff5">元</span>异构<span class="_ _2"></span>的<span class="ff5">访<span class="_ _2"></span></span>问网络</div><div class="t m0 x8b h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x8c hc y5d ff5 fs1 fc0 sc0 ls0 ws0">比<span class="ff2">如</span></div><div class="t m0 x8d h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x8e h8 y5d ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x8f h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">3G</div><div class="t m0 x72 h8 y5d ff2 fs1 fc0 sc0 ls0 ws0">。</div><div class="t m0 x90 h5 y5c ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x3 hc y5e ff5 fs1 fc0 sc0 ls0 ws0">虽<span class="ff2">然服<span class="_ _2"></span>务的用户使用<span class="_ _2"></span>多种接入网络</span></div><div class="t m0 x91 h5 y16 ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x92 hc y5e ff5 fs1 fc0 sc0 ls0 ws0">但<span class="ff2">是</span>它<span class="_ _2"></span><span class="ff2">提供了来自同<span class="_ _2"></span>一服务</span>单<span class="_ _2"></span>位<span class="ff2">的服务，例</span></div><div class="t m0 x3 h8 y5f ff2 fs1 fc0 sc0 ls0 ws0">如</div><div class="t m0 x93 h5 y17 ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x94 hc y5f ff2 fs1 fc0 sc0 ls0 ws0">多媒体<span class="_ _2"></span><span class="ff5">子</span>系统</div><div class="t m0 x95 h5 y17 ff3 fs1 fc0 sc0 ls0 ws0">(ims),</div><div class="t m0 x96 h8 y5f ff2 fs1 fc0 sc0 ls0 ws0">核心网<span class="_ _2"></span>是一个全</div><div class="t m0 x54 h5 y17 ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x97 h8 y5f ff2 fs1 fc0 sc0 ls0 ws0">网络</div><div class="t m0 x98 h5 y17 ff3 fs1 fc0 sc0 ls0 ws0">(IPv6</div><div class="t m0 x7a hc y5f ff2 fs1 fc0 sc0 ls0 ws0">的<span class="ff5">预期</span></div><div class="t m0 x1b h5 y17 ff3 fs1 fc0 sc0 ls0 ws0">),</div><div class="t m0 x3b hc y5f ff2 fs1 fc0 sc0 ls0 ws0">这个网<span class="_ _2"></span>络中大<span class="ff5">量</span></div><div class="t m0 x3 hc y60 ff2 fs1 fc0 sc0 ls0 ws0">的<span class="_ _2"></span>网关<span class="_ _2"></span>和<span class="_ _2"></span>服务<span class="_ _2"></span><span class="ff5">单<span class="_ _2"></span>元<span class="_ _2"></span></span>都会<span class="_ _2"></span><span class="ff5">连<span class="_ _2"></span></span>接不<span class="_ _2"></span>同<span class="_ _2"></span>的接<span class="_ _2"></span>入<span class="_ _2"></span>网络</div><div class="t m0 x5a h5 y61 ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x99 hc y60 ff2 fs1 fc0 sc0 ls0 ws0">同<span class="_ _2"></span><span class="ff5">样</span>，<span class="_ _2"></span><span class="ff5">与</span></div><div class="t m0 x55 h5 y61 ff3 fs1 fc0 sc0 ls0 ws0">QoS</div><div class="t m0 x10 hc y60 ff5 fs1 fc0 sc0 ls0 ws0">相<span class="_ _2"></span><span class="ff2">关的<span class="_ _2"></span>协<span class="_ _2"></span>议应<span class="_ _2"></span></span>该<span class="_ _2"></span><span class="ff2">准</span></div><div class="t m0 x3 hc y1a ff2 fs1 fc0 sc0 ls0 ws0">备到<span class="ff5">位</span></div><div class="t m0 x48 h5 y19 ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x3f hc y1a ff5 fs1 fc0 sc0 ls0 ws0">特别<span class="ff2">是在</span>横<span class="ff2">向和</span>纵<span class="ff2">向的无</span>缝切换<span class="ff2">的</span>时候<span class="ff2">。此外</span></div><div class="t m0 x3c h5 y19 ff3 fs1 fc0 sc0 ls0 ws0">,</div><div class="t m0 x9a hc y1a ff5 fs1 fc0 sc0 ls0 ws0">由<span class="ff2">于一个</span>地区<span class="ff2">可能</span>已被<span class="ff2">多</span></div><div class="t m0 x3 hc y1b ff2 fs1 fc0 sc0 ls0 ws0">个无线接入网络<span class="ff5">覆盖</span>，<span class="ff5">那么选择</span>适当的无线接入网络<span class="ff5">就</span>成为一个重要的问题。</div><div class="t m0 x3 hc y1e ff5 fs1 fc0 sc0 ls0 ws0">图<span class="ff2">一：</span></div><div class="t m0 x3 h5 y4b ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x7e h5 y4d ff3 fs1 fc0 sc0 ls0 ws0"> <span class="ff1">B: WiMAX</span></div><div class="t m0 x3d h8 y4c ff2 fs1 fc0 sc1 ls0 ws0">的体系结构</div><div class="t m0 x3 h5 y4f ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y51 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span>WiMAX</div><div class="t m0 x74 hc y50 ff2 fs1 fc0 sc0 ls0 ws0">架构<span class="_ _2"></span>的网络<span class="_ _2"></span><span class="ff5">参考</span>模<span class="ff5">型<span class="_ _2"></span></span>（</div><div class="t m0 x91 h5 y51 ff3 fs1 fc0 sc0 ls0 ws0">NRM</div><div class="t m0 x9b hc y50 ff2 fs1 fc0 sc0 ls0 ws0">）如<span class="_ _2"></span><span class="ff5">图</span></div><div class="t m0 x9c h5 y51 ff3 fs1 fc0 sc0 ls0 ws0">2</div><div class="t m0 x9d hc y50 ff2 fs1 fc0 sc0 ls0 ws0">所<span class="ff5">示<span class="_ _2"></span></span>。<span class="ff5">它</span>有一<span class="_ _2"></span>个接入服<span class="_ _2"></span>务网络<span class="_ _2"></span>，</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6274d70c445c3651d2935bb0/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x3 hc y62 ff2 fs1 fc0 sc0 ls0 ws0">为服务<span class="ff5">站</span>或移动电台<span class="ff5">与</span>网络服务提供商提供<span class="ff5">连</span>接。</div><div class="t m0 x7e h5 y54 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x94 hc y53 ff2 fs1 fc0 sc0 ls0 ws0">三个<span class="_ _2"></span><span class="ff5">访</span>问<span class="_ _2"></span>网络的<span class="_ _2"></span><span class="ff5">配置<span class="_ _2"></span>被</span>认为<span class="_ _2"></span>是<span class="ff5">由</span></div><div class="t m0 x1f h5 y54 ff3 fs1 fc0 sc0 ls0 ws0">WiMAX</div><div class="t m0 x9e hc y53 ff2 fs1 fc0 sc0 ls0 ws0">技术<span class="_ _2"></span>完成<span class="_ _2"></span>的的。<span class="_ _2"></span><span class="ff5">配置</span></div><div class="t m0 x9f h5 y54 ff3 fs1 fc0 sc0 ls0 ws0">A</div><div class="t m0 x5d hc y53 ff2 fs1 fc0 sc0 ls0 ws0">有<span class="ff5">彼<span class="_ _2"></span></span>此分</div><div class="t m0 x3 hc y55 ff2 fs1 fc0 sc0 ls0 ws0">离<span class="_ _2"></span>的基<span class="_ _2"></span><span class="ff5">站<span class="_ _2"></span>收<span class="_ _2"></span></span>发信<span class="_ _2"></span>台<span class="_ _2"></span>（</div><div class="t m0 xa0 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">BTS</div><div class="t m0 x76 hc y55 ff2 fs1 fc0 sc0 ls0 ws0">）<span class="_ _2"></span>和基<span class="_ _2"></span><span class="ff5">站<span class="_ _2"></span>控制<span class="_ _2"></span>器<span class="_ _2"></span></span>（</div><div class="t m0 x5a h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">BSC</div><div class="t m0 xa1 h8 y55 ff2 fs1 fc0 sc0 ls0 ws0">）<span class="_ _2"></span>。如</div><div class="t m0 x46 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">AAA</div><div class="t m0 xa2 hc y55 ff2 fs1 fc0 sc0 ls0 ws0">，<span class="_ _2"></span><span class="ff5">寻呼<span class="_ _2"></span></span>，<span class="_ _2"></span><span class="ff5">路<span class="_ _2"></span>由功</span></div><div class="t m0 x3 hc y57 ff2 fs1 fc0 sc0 ls0 ws0">能<span class="_ _2"></span>，<span class="_ _2"></span>是在<span class="_ _2"></span>基<span class="_ _2"></span><span class="ff5">站<span class="_ _2"></span>控<span class="_ _2"></span>制器<span class="_ _2"></span></span>（</div><div class="t m0 xa3 h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">BSC</div><div class="t m0 xa4 hc y57 ff2 fs1 fc0 sc0 ls0 ws0">）<span class="_ _2"></span>完<span class="_ _2"></span>成的<span class="_ _2"></span>，<span class="_ _2"></span>加<span class="_ _2"></span><span class="ff5">密<span class="_ _2"></span></span>在（<span class="_ _2"></span>基<span class="_ _2"></span><span class="ff5">站<span class="_ _2"></span></span>）</div><div class="t m0 x8c h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">BS</div><div class="t m0 x1a hc y57 ff2 fs1 fc0 sc0 ls0 ws0">中<span class="_ _2"></span>完<span class="_ _2"></span>成。<span class="_ _2"></span>而<span class="_ _2"></span><span class="ff5">配<span class="_ _2"></span>置</span></div><div class="t m0 xa5 h5 y56 ff3 fs1 fc0 sc0 ls0 ws0">B</div><div class="t m0 x3 hc y58 ff2 fs1 fc0 sc0 ls0 ws0">中<span class="_ _2"></span>，大<span class="_ _2"></span>部分<span class="_ _2"></span><span class="ff5">功<span class="_ _2"></span></span>能，<span class="_ _2"></span>包括</div><div class="t m0 xa6 h5 y59 ff3 fs1 fc0 sc0 ls0 ws0">AAA</div><div class="t m0 xa7 hc y58 ff2 fs1 fc0 sc0 ls0 ws0">和<span class="_ _2"></span><span class="ff5">寻呼<span class="_ _2"></span></span>发生<span class="_ _2"></span>在<span class="_ _2"></span>基<span class="ff5">站<span class="_ _2"></span></span>（</div><div class="t m0 xa8 h5 y59 ff3 fs1 fc0 sc0 ls0 ws0">BS</div><div class="t m0 xa9 hc y58 ff2 fs1 fc0 sc0 ls0 ws0">）<span class="_ _2"></span>中。<span class="_ _2"></span><span class="ff5">配置</span></div><div class="t m0 x36 h5 y59 ff3 fs1 fc0 sc0 ls0 ws0">C</div><div class="t m0 x47 h8 y58 ff2 fs1 fc0 sc0 ls0 ws0">中<span class="_ _2"></span>，</div><div class="t m0 xe h5 y59 ff3 fs1 fc0 sc0 ls0 ws0">AAA</div><div class="t m0 x60 h8 y58 ff2 fs1 fc0 sc0 ls0 ws0">，</div><div class="t m0 x3 hc y7 ff5 fs1 fc0 sc0 ls0 ws0">寻呼<span class="ff2">，</span>路由<span class="ff2">是在</span></div><div class="t m0 x62 h5 y8 ff3 fs1 fc0 sc0 ls0 ws0">ASN-GW</div><div class="t m0 xaa h8 y7 ff2 fs1 fc0 sc0 ls0 ws0">（接入网络网关）完成的。</div><div class="t m0 x7e hc y9 ff5 fs1 fc0 sc0 ls0 ws0">图二<span class="ff2">：</span></div><div class="t m0 x3 h5 y36 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="ff1"> C: 3GPP L<span class="_ _0"></span>TE</span></div><div class="t m0 xab h8 y35 ff2 fs1 fc0 sc1 ls0 ws0">的架构</div><div class="t m0 x7e h5 y38 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_ _2"></span> <span class="_ _2"></span> <span class="_ _2"></span> <span class="_ _2"></span> <span class="_ _2"></span> 3GPP L<span class="_ _0"></span>TE</div><div class="t m0 x65 hc y37 ff2 fs1 fc0 sc0 ls0 ws0">的架<span class="_ _2"></span>构有<span class="_ _2"></span><span class="ff5">两</span>个核<span class="_ _2"></span>心网<span class="_ _2"></span>络：</div><div class="t m0 x98 h5 y38 ff3 fs1 fc0 sc0 ls0 ws0">GPRS</div><div class="t m0 x4b h8 y37 ff2 fs1 fc0 sc0 ls0 ws0">核心<span class="_ _2"></span>网络<span class="_ _2"></span>，为现<span class="_ _2"></span>有的无</div><div class="t m0 x3 hc y39 ff2 fs1 fc0 sc0 ls0 ws0">线接入网提供<span class="ff5">连</span>接（例如，</div><div class="t m0 xac h5 y3a ff3 fs1 fc0 sc0 ls0 ws0">GERAN</div><div class="t m0 x1e h8 y39 ff2 fs1 fc0 sc0 ls0 ws0">的和</div><div class="t m0 xad h5 y3a ff3 fs1 fc0 sc0 ls0 ws0">UTRAN</div><div class="t m0 x98 hc y39 ff2 fs1 fc0 sc0 ls0 ws0">），<span class="ff5">另</span>一个是演进分组核心网</div><div class="t m0 x3 hc y3c ff2 fs1 fc0 sc0 ls0 ws0">络，为演进<span class="_ _2"></span>了的无线接入网和<span class="ff5">非</span></div><div class="t m0 xae h5 y3b ff3 fs1 fc0 sc0 ls0 ws0">3GPP IP</div><div class="t m0 xaf hc y3c ff5 fs1 fc0 sc0 ls0 ws0">访<span class="ff2">问提供网络<span class="_ _2"></span></span>连<span class="ff2">接。</span></div><div class="t m0 xa2 h5 y3b ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x36 h8 y3c ff2 fs1 fc0 sc0 ls0 ws0">的服务（例<span class="_ _2"></span>如</div><div class="t m0 x3 h5 y3e ff3 fs1 fc0 sc0 ls0 ws0">IP</div><div class="t m0 x93 hc y3d ff2 fs1 fc0 sc0 ls0 ws0">多媒体<span class="_ _2"></span><span class="ff5">子</span>系统）是通<span class="_ _2"></span>过演进分组核<span class="_ _2"></span>心网络<span class="_ _2"></span>提供的，<span class="ff5">它<span class="_ _2"></span>被连</span>接到</div><div class="t m0 x36 h5 y3e ff3 fs1 fc0 sc0 ls0 ws0">SAE</div><div class="t m0 xb0 h8 y3d ff2 fs1 fc0 sc0 ls0 ws0">（系统<span class="_ _2"></span>架</div><div class="t m0 x3 hc y40 ff2 fs1 fc0 sc0 ls0 ws0">构演进）的定<span class="ff5">位点</span>，这个定<span class="ff5">位点</span>是通过</div><div class="t m0 x15 h5 y3f ff3 fs1 fc0 sc0 ls0 ws0">SGSN</div><div class="t m0 xb1 hc y40 ff5 fs1 fc0 sc0 ls0 ws0">连<span class="ff2">接到</span></div><div class="t m0 xb2 h5 y3f ff3 fs1 fc0 sc0 ls0 ws0">GERAN/UTRAN</div><div class="t m0 xb3 h8 y40 ff2 fs1 fc0 sc0 ls0 ws0">的</div><div class="t m0 x8f h5 y3f ff3 fs1 fc0 sc0 ls0 ws0">.</div><div class="t m0 x7e h5 y42 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xb4 h8 y41 ff2 fs1 fc0 sc0 ls0 ws0">在</div><div class="t m0 x14 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">3GPP</div><div class="t m0 xb5 hc y41 ff2 fs1 fc0 sc0 ls0 ws0">接入网络中，无线<span class="ff5">资源控制功</span>能是在</div><div class="t m0 xb6 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">eNode B</div><div class="t m0 xb7 hc y41 ff2 fs1 fc0 sc0 ls0 ws0">（电<span class="ff5">子节点</span></div><div class="t m0 x8f h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">B</div><div class="t m0 x2e h8 y41 ff2 fs1 fc0 sc0 ls0 ws0">）中</div><div class="t m0 x3 h8 y43 ff2 fs1 fc0 sc0 ls0 ws0">完成，而</div><div class="t m0 xb8 h5 y44 ff3 fs1 fc0 sc0 ls0 ws0">AAA</div><div class="t m0 x64 hc y43 ff5 fs1 fc0 sc0 ls0 ws0">级功<span class="ff2">能和加</span>密功<span class="ff2">能在</span></div><div class="t m0 x84 h5 y44 ff3 fs1 fc0 sc0 ls0 ws0">AGW</div><div class="t m0 xad hc y43 ff2 fs1 fc0 sc0 ls0 ws0">（<span class="ff5">访</span>问网关）中完成。</div><div class="t m0 x7e hc y49 ff5 fs1 fc0 sc0 ls0 ws0">图<span class="ff2">三：</span></div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>