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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 1.5.5.dev">
<meta name="author" content="loseblue">
<title>LTE信令流程解析</title>
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<body class="book">
<div id="header">
<h1>LTE信令流程解析</h1>
<div class="details">
<span id="author" class="author">loseblue</span><br>
<span id="email" class="email">loseblue[a)g_m_a_i_l.com</span><br>
<span id="revdate">27-09-2016</span>
</div>
<div id="toc" class="toc">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#true-">1. 系统信息解析</a>
<ul class="sectlevel2">
<li><a href="#true--2">1.1. 概述</a></li>
<li><a href="#truemib-master-information-block">1.2. MIB (Master Information Block)解析</a></li>
<li><a href="#truesib1-system-information-block-1">1.3. SIB1 (System Information Block 1) 解析</a></li>
<li><a href="#truesib2-system-information-block-2">1.4. SIB2 (System Information Block 2) 解析</a></li>
<li><a href="#truesib3-system-information-block-3">1.5. SIB3 (System Information Block 3) 解析</a></li>
<li><a href="#truesib4-system-information-block-4">1.6. SIB4 (System Information Block 4) 解析</a></li>
<li><a href="#truesib5-system-information-block-5">1.7. SIB5 (System Information Block 5) 解析</a></li>
<li><a href="#truesib6-system-information-block-6">1.8. SIB6 (System Information Block 6) 解析</a></li>
<li><a href="#truesib7-system-information-block-7">1.9. SIB7 (System Information Block 7) 解析</a></li>
<li><a href="#truesib8-system-information-block-8">1.10. SIB8 (System Information Block 8) 解析</a></li>
<li><a href="#truesib9-system-information-block-9">1.11. SIB9 (System Information Block 9) 解析</a></li>
</ul>
</li>
<li><a href="#true--3">2. 主要信令流程</a>
<ul class="sectlevel2">
<li><a href="#true--4">2.1. 开机附着流程</a></li>
<li><a href="#true--5">2.2. 随机接入</a></li>
<li><a href="#trues1">2.3. S1初始化</a></li>
<li><a href="#truex2">2.4. X2初始化</a></li>
<li><a href="#trueservice-request">2.5. Service Request</a></li>
<li><a href="#truepaging">2.6. Paging</a></li>
<li><a href="#truetau">2.7. TAU</a></li>
<li><a href="#true--8">2.8. 测量报告</a></li>
<li><a href="#truee-rab">2.9. E-RAB承载管理</a></li>
<li><a href="#truex2-2">2.10. X2切换</a></li>
</ul>
</li>
<li><a href="#true--9">3. 空口信令解析</a>
<ul class="sectlevel2">
<li><a href="#msg_radom_access_preamble">3.1. Random Access Request</a></li>
<li><a href="#msg_radom_access_response">3.2. Random Access Response</a></li>
<li><a href="#msg_rrc_connection_request">3.3. RRC Connection Request</a></li>
<li><a href="#msg_rrc_connection_setup">3.4. RRC Connection Setup</a></li>
<li><a href="#msg_rrc_connection_setup_complete">3.5. RRC Connection Setup Complete</a></li>
<li><a href="#msg_ue_capability_enquir">3.6. UE Capability Enquir</a></li>
<li><a href="#msg_ue_capability_info">3.7. UE Capability Information</a></li>
<li><a href="#msg_security_mode_command">3.8. Security Mode Command</a></li>
<li><a href="#msg_security_mode_complete">3.9. Security Mode Complete</a></li>
<li><a href="#msg_rrc_connection_reconfig">3.10. RRC Connection Reconfiguration</a></li>
<li><a href="#msg_rrc_conn_reconfig_for_meas_add">3.11. RRC Connection Reconfiguration for add Measurement</a></li>
<li><a href="#msg_rrc_conn_reconfig_for_meas_remove">3.12. RRC Connection Reconfiguration for remove Measurement</a></li>
<li><a href="#msg_meas_report">3.13. Measurement Report</a></li>
</ul>
</li>
<li><a href="#true--10">4. 网络层信令解析</a>
<ul class="sectlevel2">
<li><a href="#msg_initial_ue_message">4.1. Initial UE Message</a></li>
<li><a href="#msg_initial_context_setup_req">4.2. Initial Context Setup Request</a></li>
<li><a href="#msg_ue_cap_info_ind">4.3. UE Capability Info Indication</a></li>
<li><a href="#msg_inital_context_setup_rsp">4.4. Inital Context Setup Response</a></li>
<li><a href="#msg_s1_setup_req">4.5. S1 Setup Request</a></li>
<li><a href="#msg_s1_setup_rsp">4.6. S1 Setup Response</a></li>
<li><a href="#msg_ENB_direct_info_transfer">4.7. ENB Direct Information Transfer</a></li>
<li><a href="#msg_x2_setup_req">4.8. X2 Setup Request</a></li>
<li><a href="#msg_x2_setup_rsp">4.9. X2 Setup Response</a></li>
<li><a href="#msg_erab_setup_req">4.10. E-RAB Setup Request</a></li>
<li><a href="#msg_erab_setup_rsp">4.11. E-RAB Setup Response</a></li>
</ul>
</li>
<li><a href="#truevolte">5. VoLTE流程及信令解析</a>
<ul class="sectlevel2">
<li><a href="#truevolte-2">5.1. VoLTE注册</a></li>
<li><a href="#truevolte-3">5.2. VoLTE通话</a></li>
</ul>
</li>
<li><a href="#truetest">Appendix A: test</a></li>
</ul>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="true-"><a class="anchor" href="#true-"></a>1. 系统信息解析</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="true--2"><a class="anchor" href="#true--2"></a>1.1. 概述</h3>
<div class="paragraph">
<p>LTE系统内分为MIB和SIB系列消息, 对于UE当新接入一个小区或广播消息发生改变时, 都会接收系统信息(MIB\SIB), 以帮助更新或纠正UE当前的状态, 完成相应的通信业务和物理过程. 在系统路测中可以观察的系统信息有种: MIB, SIB1和SI, 其作用分别如下.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>MIB:用于系统接入. MIB上传输几个比较重要的系统信息参数, 如小区下行带宽, PHICH配置参数, 无线系统帧号SFN(包含SIB1消息的位置), 在PBCH上发送, 表现为"RRC_MASTER_INFO_BLOCK".</p>
</li>
<li>
<p>SIB1:广播小区接入与小区选择的相关参数以及SI消息的调度信息(包含了一个或多个SIB2-13消息), 在PDSCH上发送, 表现为"RRC_SIB_TYPE1".</p>
</li>
<li>
<p>SI:SI消息中承载的是SIB2-SIB13, 在PDSCH上发送, 表现为"RRC_SYS_INFO".</p>
<div class="ulist">
<ul>
<li>
<p>SIB2:小区内所有UE共用的无线参数配置, 其它无线参数基本配置.</p>
</li>
<li>
<p>SIB4:同频邻区列表以及每个邻区的重选参数, 同频白/黑名单小区列表.</p>
</li>
<li>
<p>SIB5:异频相邻频点列表以及每个频点的重选参数, 异频相邻小区列表以及每个邻区的重选参数, 异频黑名单小区列表.</p>
</li>
<li>
<p>SIB6:UTRA FDD邻频频点列表以及每个频点的重选参数, UTRA TDD邻频频点列表以及每个频点的重选参数.(WCDMA)</p>
</li>
<li>
<p>SIB7:GERAN邻频频点列表以及每个频点的重选参数.</p>
</li>
<li>
<p>SIB8:CDMA2000的预注册信息, CDMA2000邻频频段列表和每个频段的重选参数, CDMA2000邻频频段的邻区列表.</p>
</li>
<li>
<p>SIB9:Home eNodeB的名称.</p>
</li>
<li>
<p>SIB10:ETWS主信息(primary notification).</p>
</li>
<li>
<p>SIB11:ETWS辅信息(secondary notification).</p>
</li>
<li>
<p>SIB12:CMAS信息(CMAS notification).</p>
</li>
<li>
<p>SIB13:请求获取跟一个或多个MBSFN区域相关的MBMS控制信息的信息.</p>
</li>
</ul>
</div>
</li>
</ul>
</div>
<div class="imageblock" style="text-align: center">
<div class="content">
<img src="images/SI_Scheduling.jpg" alt="SI Scheduling.jpg">
</div>
<div class="title">Figure 1. 系统信息时序图</div>
</div>
</div>
<div class="sect2">
<h3 id="truemib-master-information-block"><a class="anchor" href="#truemib-master-information-block"></a>1.2. MIB (Master Information Block)解析</h3>
<div class="paragraph">
<p>MIB主要包含系统带宽, PHICH配置信息, 系统帧号. (下图为实测信令)</p>
</div>
<div class="imageblock" style="text-align: center">
<div class="content">
<img src="images/mib.jpg" alt="mib.jpg">
</div>
<div class="title">Figure 2. mib</div>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">DL_Bandwidth</dt>
<dd>
<p>系统带宽, 范围enumerate(1.4M(6RB, 0), 3M(15RB, 1), 5M(25RB, 2), 10M(50RB, 3), 15M(75RB, 4), 20M(100RB, 5)), 上图为n100, 对应的系统带宽为20M(100RB, 带宽索引号为5).</p>
</dd>
<dt class="hdlist1">Phich_Config</dt>
<dd>
<div class="ulist">
<ul>
<li>
<p>参见 <a href="http://blog.sina.com.cn/s/blog_927cff010101bhbi.html">PHICH分析一</a></p>
</li>
<li>
<p>参见 <a href="http://blog.sina.com.cn/s/blog_927cff010101bhck.html">PHICH分析二</a></p>
</li>
</ul>
</div>
</dd>
<dt class="hdlist1">Phich_Duration</dt>
<dd>
<p>当该参数设置为normal时, PDCCH占用的OFDM符号数可以自适应调整; 当该参数设置为extended时, 若带宽为1.4M, 则PDCCH占用的OFDM符号数可以取3或4, 对于其他系统带宽下, PDCCH占用的符号数只能为3.</p>
</dd>
</dl>
</div>
<table class="tableblock frame-all grid-all" style="width: 90%;">
<caption class="title">Table 1. Phich_Duration</caption>
<colgroup>
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 25%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-center valign-top"></th>
<th class="tableblock halign-left valign-top" colspan="2">非MBSFN子帧</th>
<th class="tableblock halign-left valign-top">MBSFN子帧</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-center valign-top"><p class="tableblock">PHICH持续时间</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">帧结构类型2中的子帧1和子帧6</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">其他情况</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">同时支持PDSCH和PMCH的载波</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top"><p class="tableblock">Normal</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top"><p class="tableblock">Extended</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">2</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">3</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">2</p></td>
</tr>
</tbody>
</table>
<div class="dlist">
<dl>
<dt class="hdlist1">PHICH-Resource</dt>
<dd>
<p>该参数用于计算小区PHICH信道的资源;</p>
</dd>
<dt class="hdlist1">SystemFrameNumber</dt>
<dd>
<p>系统帧号. 系统帧号, 用于UE获取系统时钟. 实际SFN位长为10bit, 也就是取值从0-1023循环. 在PBCH的MIB广播中只广播前8位, 剩下的两位根据该帧在PBCH 40ms周期窗口的位置确定, 第一个10ms帧为00, 第二帧为01, 第三帧为10, 第四帧为11. PBCH的40ms窗口手机可以通过盲检确定.</p>
</dd>
<dt class="hdlist1">Spare</dt>
<dd>
<p>预留的, 暂时未用</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="truesib1-system-information-block-1"><a class="anchor" href="#truesib1-system-information-block-1"></a>1.3. SIB1 (System Information Block 1) 解析</h3>
<div class="paragraph">
<p>SIB1上主要传输评估UE能否接入小区的相关信息及其他系统信息的调度信息. 主要包括4部分:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>小区接入相关信息(cell Access Related Info)</p>
<div class="ulist">
<ul>
<li>
<p>PLMN Identity List, PLMN Identity, TA Code, Cell identity & Cell Status</p>
</li>
</ul>
</div>
</li>
<li>
<p>小区选择信息(cell Selection Info)</p>
<div class="ulist">
<ul>
<li>
<p>Minimum Receiver Level</p>
</li>
</ul>
</div>
</li>
<li>
<p>调度信息(scheduling Info List)</p>
<div class="ulist">
<ul>
<li>
<p>SI message type & Periodicity, SIB mapping Info, SI Window length</p>
</li>
</ul>
</div>
</li>
<li>
<p>TDD配置信息(tdd-Config)</p>
</li>
</ul>
</div>
<div class="listingblock">
<div class="title">SIB1</div>
<div class="content">
<pre>MS1
System Information Block Type1 (DL-BCCH-SCH)
Time : 15:57:43.004
Vendor Header
Length : 47
Log Code (Hex) : 0xB0C0
HW Timestamp : (63622381.25 ms) 17:40:22.381
1.25 ms fraction : 0.00
CFN : 136
1.25 ms counter : 867576017905
RRC Signaling Header
Log Packet Version : 2
RRC Release Number : 9.5.0
Radio Bearer Id : 0
Physical Cell Id : 2
E-ARFCN : 39150
System Frame Number
System frame number : N/A
Sub frame number : N/A
Message Type : BcchSchDownlink
Message Length : 22
plmn-IdentityList <i class="conum" data-value="1"></i><b>(1)</b>
PLMN-IdentityList :
[0 ] :
plmn-Identity
mcc
MCC :
[0 ] : 0
[1 ] : 0
[2 ] : 1
mnc
MNC :
[0 ] : 0
[1 ] : 1
cellReservedForOperatorUse : notReserved
trackingAreaCode : 12594 (0x3132) <i class="conum" data-value="2"></i><b>(2)</b>
cellIdentity : 2 (0x2) <i class="conum" data-value="3"></i><b>(3)</b>
cellBarred : notBarred <i class="conum" data-value="4"></i><b>(4)</b>
intraFreqReselection : allowed <i class="conum" data-value="5"></i><b>(5)</b>
csg-Indication : False <i class="conum" data-value="6"></i><b>(6)</b>
q-RxLevMin : -65 <i class="conum" data-value="7"></i><b>(7)</b>
q-RxLevMinOffset : 1 <i class="conum" data-value="8"></i><b>(8)</b>
p-Max : 23 <i class="conum" data-value="9"></i><b>(9)</b>
freqBandIndicator : 40 <i class="conum" data-value="10"></i><b>(10)</b>
schedulingInfoList <i class="conum" data-value="11"></i><b>(11)</b>
SchedulingInfoList :
[0 ] :
si-Periodicity : rf16 <i class="conum" data-value="12"></i><b>(12)</b>
sib-MappingInfo
SIB-MappingInfo :
[0 ] :
extensionBit0 : 0
Optionalitem : sibType3 <i class="conum" data-value="13"></i><b>(13)</b>
[1 ] :
extensionBit0 : 0
Optionalitem : sibType5
[1 ] :
si-Periodicity : rf128
sib-MappingInfo
SIB-MappingInfo :
[0 ] :
extensionBit0 : 0
Optionalitem : sibType6
[1 ] :
extensionBit0 : 0
Optionalitem : sibType7
tdd-Config
subframeAssignment : sa2 <i class="conum" data-value="14"></i><b>(14)</b>
specialSubframePatterns : ssp7 <i class="conum" data-value="15"></i><b>(15)</b>
si-WindowLength : ms20 <i class="conum" data-value="16"></i><b>(16)</b>
systemInfoValueTag : 0 <i class="conum" data-value="17"></i><b>(17)</b>
Message dump (Hex):
70 40 04 03 31 32 00 00 00 29
14 6B 38 48 80 28 21 91 3D 00
00 00</pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>PLMN标识列表(0-6)</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>TAC跟踪区(0-65546) 消息中(0x3132)为16进制数, 转换成十进制为12594</td>
</tr>
<tr>
<td><i class="conum" data-value="3"></i><b>3</b></td>
<td>小区ID实际是ECI, 与核心网中的数据相同, 其中089055为ENB ID标识, 0A为小区标识(此数字必须是2位16进制数, 才能与16进制的ENB ID进行组合成ECI), 如果ENB ID和小区ID都是十进制数的话, ECI=10进制的ENB ID * 256+ 10进制cell ID</td>
</tr>
<tr>
<td><i class="conum" data-value="4"></i><b>4</b></td>
<td>小区禁止: 小区是否禁止UE驻扎, notBarred表示不禁止</td>
</tr>
<tr>
<td><i class="conum" data-value="5"></i><b>5</b></td>
<td>同频重选: 允许; 用来控制当更高级别的小区禁止接入时, 能否重选同频小区</td>
</tr>
<tr>
<td><i class="conum" data-value="6"></i><b>6</b></td>
<td>指示这个小区是否为CSG小区. 当csg-Indication设置为1(true)时, 只有当消息中的CSG(Closed Subscriber Group关闭用户组)标识和UE中存储的CSG列表中的一项匹配时, 此UE才能接入小区. 这个主要是用在R9的家庭基站中的概念, 用于家庭基站对用户接入的控制. FALSE表示不启用.</td>
</tr>
<tr>
<td><i class="conum" data-value="7"></i><b>7</b></td>
<td>指示小区要求的最小接收功率RSRP(-140..-44)dBm, 即当UE测量小区RSRP低于该值时UE是无法在该小区驻留的. 实际的值为: Q<sub>rxlevmin</sub> = IE value * 2[dB]</td>
</tr>
<tr>
<td><i class="conum" data-value="8"></i><b>8</b></td>
<td>小区选择所需要的最小接收电平偏移,(2-16)dB</td>
</tr>
<tr>
<td><i class="conum" data-value="9"></i><b>9</b></td>
<td>小区支持UE允许的最大发射功率,如果eNB配置大于UE支持最大值, UE就设置为UE支持的最大值. 例如Cat3 UE支持最大23db</td>
</tr>
<tr>
<td><i class="conum" data-value="10"></i><b>10</b></td>
<td>频带指示, 表示当前系统的使用40频段</td>
</tr>
<tr>
<td><i class="conum" data-value="11"></i><b>11</b></td>
<td>调度信息表</td>
</tr>
<tr>
<td><i class="conum" data-value="12"></i><b>12</b></td>
<td>SI消息的调度周期, 以无线帧为单位. 如rf16表示周期为16个无线帧</td>
</tr>
<tr>
<td><i class="conum" data-value="13"></i><b>13</b></td>
<td>系统消息中所含的系统信息块映射表. 表中没有包含SIB2, 它一直包含在SI消息中的第一项. 该字段决定了该小区能下发的sib(3到11)类型. 以上调度信息表示SIB3的周期和位置.</td>
</tr>
<tr>
<td><i class="conum" data-value="14"></i><b>14</b></td>
<td>用于指示上下行子帧的配置, sa2对应配置2. 详见 <a href="#tab_UD_conifg">TD LTE uplink-downlink configuration</a></td>
</tr>
<tr>
<td><i class="conum" data-value="15"></i><b>15</b></td>
<td>特殊子帧配比. 详见 <a href="#tab_special_conifg">TD LTE uplink-downlink configuration</a></td>
</tr>
<tr>
<td><i class="conum" data-value="16"></i><b>16</b></td>
<td>系统消息调度窗口,20ms</td>
</tr>
<tr>
<td><i class="conum" data-value="17"></i><b>17</b></td>
<td>指示其它SIB是否发生了改变 详见 <a href="#si_value_tag">systemInfoValueTag解析</a></td>
</tr>
</table>
</div>
<table id="tab_UD_conifg" class="tableblock frame-all grid-all" style="width: 90%;">
<caption class="title">Table 2. TD LTE uplink-downlink configuration</caption>
<colgroup>
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3333%;">
<col style="width: 8.3337%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-center valign-top" rowspan="2"><p class="tableblock">Uplink-downlink configuration</p></td>
<td class="tableblock halign-center valign-top" rowspan="2"><p class="tableblock">Downlink-to-Uplink Switch-point periodicity</p></td>
<td class="tableblock halign-center valign-top" colspan="10"><p class="tableblock">Subframe number</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">0</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">2</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">3</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">4</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">5</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">6</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">7</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">8</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">9</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">0</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">5ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">5ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">2</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">5ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">3</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">10ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">4</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">10ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">5</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">10ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">6</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">5ms</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">S</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">U</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">D</p></td>
</tr>
</tbody>
</table>
<table id="tab_special_conifg" class="tableblock frame-all grid-all" style="width: 90%;">
<caption class="title">Table 3. TD LTE uplink-downlink configuration</caption>
<colgroup>
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 25%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-center valign-top" rowspan="2"><p class="tableblock">特殊子帧配置</p></td>