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	<title>LTE &#8211; richliu&#039;s blog</title>
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	<description>Linux, 工作, 生活, 家人</description>
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		<title>UE Attach Sequence</title>
		<link>https://blog.richliu.com/2013/11/01/1568/ue-attach-sequence/</link>
					<comments>https://blog.richliu.com/2013/11/01/1568/ue-attach-sequence/#respond</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Fri, 01 Nov 2013 09:00:25 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[Attach]]></category>
		<category><![CDATA[UE]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1568</guid>

					<description><![CDATA[<p>解釋 Message 1 ~ Message 4 . http://4g-lte-world.blogspot [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/11/01/1568/ue-attach-sequence/">UE Attach Sequence</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>解釋 Message 1 ~ Message 4 .<br />
<a href="http://4g-lte-world.blogspot.tw/2013/04/random-access-procedure-rach-in-lte.html" target="_blank" rel="noopener">http://4g-lte-world.blogspot.tw/2013/04/random-access-procedure-rach-in-lte.html</a></p>
<p>這篇也不錯, 講的更多了, 如果想瞭解 UE Attach 全貌的可以看這一篇.<br />
<iframe src="http://www.slideshare.net/slideshow/embed_code/14360096" width="427" height="356" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC;border-width:1px 1px 0;margin-bottom:5px" allowfullscreen> </iframe> </p>
<div style="margin-bottom:5px"> <strong> <a href="https://www.slideshare.net/aliirfan04/lte-architecture-and-lte-attach" title="LTE Architecture and LTE Attach" target="_blank" rel="noopener">LTE Architecture and LTE Attach</a> </strong> from <strong><a href="http://www.slideshare.net/aliirfan04" target="_blank" rel="noopener">aliirfan04</a></strong> </div>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/11/01/1568/ue-attach-sequence/">UE Attach Sequence</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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		<title>ASUS EeePC 701 4GSurf + lubuntu + Sierra AirCard 320U</title>
		<link>https://blog.richliu.com/2013/10/30/1563/asus-eeepc-701-4gsurf-lubuntu-sierra-aircard-320u/</link>
					<comments>https://blog.richliu.com/2013/10/30/1563/asus-eeepc-701-4gsurf-lubuntu-sierra-aircard-320u/#comments</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Wed, 30 Oct 2013 14:14:23 +0000</pubDate>
				<category><![CDATA[Computer/Technical]]></category>
		<category><![CDATA[LTE]]></category>
		<category><![CDATA[Ubuntu]]></category>
		<category><![CDATA[AirCard 320u]]></category>
		<category><![CDATA[EeePC]]></category>
		<category><![CDATA[lte]]></category>
		<category><![CDATA[Lubuntu]]></category>
		<category><![CDATA[ubuntu]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1563</guid>

					<description><![CDATA[<p>頻道長輩因為 ASUS EeePC 的 4G SSD 有點問題, 就送出這一台 EeePC 701 4G Su [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/30/1563/asus-eeepc-701-4gsurf-lubuntu-sierra-aircard-320u/">ASUS EeePC 701 4GSurf + lubuntu + Sierra AirCard 320U</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p><a href="https://blog.richliu.com/wp-content/uploads/2013/10/eeepc-701-aircard-320u_10573832015_o.jpg"><img fetchpriority="high" decoding="async" class="aligncenter size-large wp-image-3220" src="https://blog.richliu.com/wp-content/uploads/2013/10/eeepc-701-aircard-320u_10573832015_o-1024x579.jpg" alt="" width="620" height="351" srcset="https://blog.richliu.com/wp-content/uploads/2013/10/eeepc-701-aircard-320u_10573832015_o-1024x579.jpg 1024w, https://blog.richliu.com/wp-content/uploads/2013/10/eeepc-701-aircard-320u_10573832015_o-300x170.jpg 300w, https://blog.richliu.com/wp-content/uploads/2013/10/eeepc-701-aircard-320u_10573832015_o-768x434.jpg 768w" sizes="(max-width: 620px) 100vw, 620px" /></a></p>
<p>頻道長輩因為 ASUS EeePC 的 4G SSD 有點問題, 就送出這一台 EeePC 701 4G Sure.<br />
這一台沒有可以擴充的介面, 要改裝要拆機才可以改, 不是很方便.</p>
<p>還好還有一個 SD Card 插槽, 可以丟一張 8G SD Card 進去, 不過該 SD Card 插槽的介面速度真是悲劇.. 超慢的.<br />
<span id="more-1563"></span><br />
昨天拿到先灌了 Windows XP 進去, 看起來沒有大問題.<br />
(註: 隔天跑到一半還是爛掉, 原因不明, 但是 memory test 都是 pass 的).<br />
但是灌 Ubuntu Linux 就不是這麼容易, 這顆 CPU 不支援 PAE, 所以 Ubuntu 12.04 不能用, 如果使用安裝光碟, 會有 CPU 不支援的字樣.</p>
<p>網路上有人說用 mini ISO 可以灌成功, 不過我怎麼試都會在 Install Package 那邊失敗.<br />
還想要用舊版的 Ubuntu 8.04 灌完再升級, 不過還是失敗 (囧)</p>
<p>最後找到有文章(<a href="http://askubuntu.com/questions/19389/whats-the-meaning-of-pae-at-the-end-of-kernel-version" target="_blank" rel="noopener">What&#8217;s the meaning of “-pae” at the end of kernel version?</a>)提到 <a href="http://www.lubuntu.net/" target="_blank" rel="noopener">Lubuntu </a>仍然使用 non-PAE kernel 做為開機光碟, 去下載 Lubuntu 12.04, 果然可以順利解決這個問題.<br />
Lubuntu 預設使用 <a href="http://lxde.org/" target="_blank" rel="noopener">LXDE </a>桌面系統, 短小精悍, 而且果然適合 EeePC 這種超級老系統, 我也就懶得換 Desktop 了.<br />
缺點就是, Install Software 不是設計給 800&#215;480 這種解析度用的, 有點難操作.</p>
<p>裝完之後不知道為什麼, grub 沒有裝進去, 會開機失敗, 需要進救援模式<br />
# mount /dev/sdb1 /mnt<br />
# cd /mnt<br />
# mount &#8211;bind /proc proc<br />
# mount &#8211;bind /dev dev<br />
# mount &#8211;bind /sys sys<br />
# cd /<br />
# chroot /mnt<br />
# apt-get install grub2<br />
# grub-install /dev/sda<br />
grub2 不需要像 grub1.x 用 grub + command 模式設定(比較穩定?)<br />
似乎改善很多.</p>
<p>開進系統大概要二~三分鐘吧 (看在用 SD Card 的份上, 算了)</p>
<p><del datetime="2013-12-11T17:04:49+00:00">因為我是要拿來測 Sierra Wireless AirCard 320U 的.<br />
首先先按照這份文件(<a href="http://mycusthelpadmin.net/SIERRAWIRELESS/_cs/AnswerDetail.aspx?aid=44" target="_blank" rel="noopener">Can I use a Sierra Wireless Modem on Linux Machines (direct IP modems)?</a>)下載 Driver v3.2_1740 按照文內的方式安裝,</del></p>
<p>Ubuntu 12.04 內建 Driver, 插入就可以抓得到, 如果沒有出現 wwan0 interface , 可以重開機再試一下.</p>
<p>接下來就用 minicom 連到 /dev/ttyUSB3 介面, 下 at command (這真古老的命令, 以前玩 modem 的時候下很多)<br />
$ ati5<br />
$ at+cgdcont=1,”IP”,”Aeroflex.com”<br />
*註: 這是我的測試 SIM Card<br />
$ at!pcstate=1<br />
$ at!scact=1,1<br />
這樣兩個燈就會亮了, 表示己經連上 EPC. 但是這時還沒有拿到 IP.<br />
在 Linux Console 下,<br />
# dhclient wwan0</p>
<p>這樣我的 EeePC 就可以走 LTE 上網了&#8230;.</p>
<p>Update:</p>
<p>在 BIOS 將 OS Installed 選項改成 Finished 似乎會比較快?</p>
<p>另外我現在改用 wvdial 套件, 可以修改 /etc/wvdial.conf 改成如下的設定<br />
[TEXT]<br />
[Dialer Defaults]<br />
Init1 = at+cgdcont=1,&#8221;IP&#8221;,&#8221;Aeroflex.com&#8221;<br />
Init2 = at!pcstate=1<br />
Init3 = at!scact=1,1<br />
Baud = 115200<br />
; New PPPD = yes<br />
Modem = /dev/ttyUSB3<br />
ISDN = 0<br />
[/TEXT]</p>
<p>再執行<br />
# wvdial<br />
就可以連上了, 若是 USB LTE Dongle 上二個燈號都亮的時侯, 要手動啟動 wwan0 interface, 再手動執行 dhclient 抓 IP , 這樣就可以了.<br />
# ifconfig wwan0 up<br />
# dhclient wwan0</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/30/1563/asus-eeepc-701-4gsurf-lubuntu-sierra-aircard-320u/">ASUS EeePC 701 4GSurf + lubuntu + Sierra AirCard 320U</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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		<item>
		<title>台灣 LTE WiMax 頻段表</title>
		<link>https://blog.richliu.com/2013/10/22/1551/%e5%8f%b0%e7%81%a3-lte-wimax-%e9%a0%bb%e6%ae%b5%e8%a1%a8/</link>
					<comments>https://blog.richliu.com/2013/10/22/1551/%e5%8f%b0%e7%81%a3-lte-wimax-%e9%a0%bb%e6%ae%b5%e8%a1%a8/#comments</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Tue, 22 Oct 2013 13:15:44 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[Frequency]]></category>
		<category><![CDATA[lte]]></category>
		<category><![CDATA[WiMax]]></category>
		<category><![CDATA[台灣]]></category>
		<category><![CDATA[頻段]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1551</guid>

					<description><![CDATA[<p>NCC公布的資料：http://goo.gl/DyzdnL (一) 700 MHz 頻段： Band 28 １ [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/22/1551/%e5%8f%b0%e7%81%a3-lte-wimax-%e9%a0%bb%e6%ae%b5%e8%a1%a8/">台灣 LTE WiMax 頻段表</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>NCC公布的資料：http://goo.gl/DyzdnL<br />
(一) 700 MHz 頻段： Band 28<br />
１、A1：上行703～713MHz；下行758 ～768MHz （上下行各10MHz）<br />
亞太 : Central Frequency DL 763 EARFCN 9260 UL 708 EARFCN 27260<br />
２、A2：上行713～723MHz；下行768 ～778MHz （上下行各10MHz）<br />
遠傳 : Central Frequency DL 773 EARFCN 9360 UL 718 EARFCN 27360<br />
<del datetime="2016-06-07T07:43:12+00:00">３、A3：上行723～733MHz；下行778 ～788MHz （上下行各10MHz）<br />
國碁: Central Frequency DL 783 EARFCN 9460 UL 728 EARFCN 27460<br />
４、A4：上行733～748MHz；下行788 ～803MHz （上下行各15MHz） (794-803MHz已有現存低功率射頻電機設備(低功率無線麥克風)）<br />
台哥大: Central Frequency DL 795.5 EARFCN 9585 UL 740.5 EARFCN 27585</del>(註: <a href="http://www.ettoday.net/news/20140925/405910.htm" target="_blank" rel="noopener">4G 震撼彈！台哥大宣布取得國碁 700 頻段 5Mhz 頻譜</a>)<br />
３、A3：上行723～728MHz；下行778 ～783MHz （上下行各5MHz）<br />
國碁: Central Frequency DL 780.5 EARFCN 9435 UL 725.5 EARFCN 27435<br />
４、A4：上行728～748MHz；下行783 ～803MHz （上下行各20MHz）<br />
台哥大: Central Frequency DL 793 EARFCN 9560 UL 738 EARFCN 27560<br />
(二) 900 MHz 頻段： Band 8<br />
１、B1：上行885～895MHz；下行930 ～940MHz （上下行各10MHz） （2019年1月1日始有頻率使用權）<br />
台灣之星: Central Frequency DL 935 EARFCN 3550 UL 890 EARFCN 21550<br />
２、B2：上行895～905MHz；下行940 ～950MHz （上下行各10MHz） （2017年7月1日始有頻率使用權）<br />
中華: Central Frequency DL 945 EARFCN 3650 UL 900 EARFCN 21650<br />
３、B3：上行905～915MHz；下行950 ～960MHz （上下行各10MHz） （2017年7月1日始有頻率使用權）<br />
國碁: Central Frequency DL 955 EARFCN 3750 UL 910 EARFCN 21750<br />
(三) 1800 MHz 頻段： Band 3<br />
１、C1：上行1710～1725MHz；下行1805 ～1820MHz （上下行各15MHz） （2017年7月1日始有頻率使用權）<br />
台哥大 : Central Frequency DL 1812.5 EARFCN 1275 UL 1717.5 EARFCN 19275<br />
２、C2：上行1725～1735MHz；下行1820 ～1830MHz （上下行各10MHz） （2017年7月1日始有頻率使用權）<br />
CHT: Central Frequency DL 1825 EARFCN 1400 UL 1730 EARFCN 19400<br />
３、C3：上行1735～1745MHz；下行1830 ～1840MHz （上下行各10MHz） （2017年7月1日始有頻率使用權）<br />
遠傳: Central Frequency DL 1835 EARFCN 1500 UL 1740 EARFCN 19500<br />
遠傳: Central Frequency DL 1840 EARFCN 1550 UL 1745 EARFCN 19550 (20Mhz)<br />
４、C4：上行1745～1755MHz；下行1840 ～1850MHz （上下行各10MHz） （2017年7月1日始有頻率使用權）<br />
遠傳: Central Frequency DL 1850 EARFCN 1650 UL 1755 EARFCN 19650<br />
５、C5：上行1755～1770MHz；下行1850 ～1865MHz （上下行各15MHz）<br />
CHT : Central Frequency DL 1857.5 EARFCN 1725 UL 1762.5 EARFCN 19725</p>
<p>WiMax 頻段<br />
執照A1：大眾電信 北區，2565~2595 MHz 對映到 LTE FDD Band 7 , TDD Band 41<br />
執照A2：遠傳電信 南區，2565~2595 MHz<br />
執照B1：全球一動 北區，2595~2625 MHz 對映到 LTE TDD Band 38, TDD Band 41<br />
執照B2：大同電信 南區，2595~2625 MHz<br />
執照C1：威邁思電信 北區，2660~2690 MHz 對映到 LTE FDD Band 7 , TDD Band 41<br />
執照C2：威達有線電視 南區，2660~2690 MHz</p>
<p>目前似乎還有各家都還有 3G TDD 的頻段未使用可以釋出. 1915~1920Mhz, 1900-1915Mhz(TDD Band 33, 37, 39? ), 2010-2025Mhz(TDD Band 23,34),</p>
<p>Band 3, Band 7 , Band 17, Band 1 都是很熱門的頻段.</p>
<p>104/7/23 號 NCC 釋出新一波頻段 http://goo.gl/u88XwB<br />
(一) 2500Mhz 和 2600Mhz FDD (Band7 )<br />
1. 台灣之星 D1: UL: 2500Mhz~2520Mhz  DL: 2620Mhz~2640Mhz (20Mhz)<br />
Central Frequency DL 2630 EARFCN 2850 UL 2510 EARFCN 20850<br />
2. CHT D2: UL: 2520Mhz~2540Mhz  DL: 2640Mhz~2660Mhz (20Mhz)<br />
Central Frequency DL 2650 EARFCN 3050 UL 2530 EARFCN 21050<br />
3. 遠傳 D3: UL: 2540Mhz~2560Mhz  DL: 2660Mhz~2680Mhz (20Mhz)<br />
Central Frequency DL 2670 EARFCN 3250 UL 2550 EARFCN 21250<br />
4. CHT D4: UL: 2560Mhz~2570Mhz  DL: 2680Mhz~2690Mhz (10Mhz)<br />
Central Frequency DL 2685 EARFCN 3400 UL 2565 EARFCN 21400<br />
(二) 2500/2600Mhz TDD (Band 38 )<br />
1. GT D5: 2570Mhz~2595Mhz (25Mhz)<br />
2. 遠傳 D6: 2595Mhz~2620 (25Mhz)<br />
TDD 頻段有點怪, LTE 單頻最大是 20Mhz, 所以 25Mhz 是讓人切 10Mhz 和 15Mhz 嗎?</p>
<p>Ref.<br />
<a href="http://www.ptt.cc/bbs/MobileComm/M.1380381615.A.BEC.html" target="_blank" rel="noopener">[情報] 台灣LTE頻段對應國際LTE頻段+iPhone 5s頻段</a><br />
<a href="http://www.apple.com/iphone/LTE/" target="_blank" rel="noopener">Apple LTE 支援表</a><br />
http://niviuk.free.fr/lte_band.php<br />
<a href="http://mbb.ncc.gov.tw/index.html" target="_blank" rel="noopener">最新 LTE 競價狀況</a><br />
<a href="http://www.google.com.tw/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;cad=rja&amp;ved=0CDAQFjAA&amp;url=http%3A%2F%2Fwww.motc.gov.tw%2Fuploaddowndoc%3Ffile%3Dpublication%2F201203161233050.pdf%26filedisplay%3D%25E6%2588%2591%25E5%259C%258B%25E4%25B8%25AD%25E3%2580%2581%25E9%2595%25B7%25E6%259C%259F%25E7%2584%25A1%25E7%25B7%259A%25E9%259B%25BB%25E9%25A0%25BB%25E8%25AD%259C%25E6%259C%2580%25E4%25BD%25B3%25E5%258C%2596%25E8%25A6%258F%25E5%258A%2583%2B(%25E7%25B8%25BD%25E7%25B5%2590%25E8%25A9%2595%25E4%25BC%25B0%25E5%25A0%25B1%25E5%2591%258A).pdf%26flag%3Ddoc&amp;ei=BHpmUpeNGomCkwXT7oDwAQ&amp;usg=AFQjCNH7EWhHCHba_KbWT9qMwOGZSJGLEw&amp;sig2=dFuqbeecM7xr-yJN0sQ-nw" target="_blank" rel="noopener">交通部98-100 年度「我國中、長期無線電頻譜最佳化規劃」總結評估報告<br />
</a></p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/22/1551/%e5%8f%b0%e7%81%a3-lte-wimax-%e9%a0%bb%e6%ae%b5%e8%a1%a8/">台灣 LTE WiMax 頻段表</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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		<item>
		<title>CQI and MCS</title>
		<link>https://blog.richliu.com/2013/10/22/1545/cqi-and-mcs/</link>
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		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Mon, 21 Oct 2013 16:10:27 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[CQI]]></category>
		<category><![CDATA[MCS]]></category>
		<category><![CDATA[TBS]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1545</guid>

					<description><![CDATA[<p>LTE UE 會使用 CQI (Channel Quality Indicator) 動態調整 MCS 以降低 [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/22/1545/cqi-and-mcs/">CQI and MCS</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>LTE UE 會使用 CQI (Channel Quality Indicator) 動態調整 MCS 以降低傳輸錯誤率.</p>
<p>UE 測量 PRB (Physical Resource Block)的接收功率和干擾得到 SINR 值, 在 BLER 值不超過 10%. 將測量值轉換成 CQI. eNodeB 會根據 CQI 值選擇最合適的 MCS.<br />
CQI 報告是由 eNodeB 主動發起, 可以是定時或是不定時.</p>
<p><span id="more-1545"></span></p>
<p>不同的 CQI Index 有不同的 Code Rate.<br />
如下表</p>
<div align="center">
<table border="1" width="204" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="64">
<p align="center">CQI</p>
</td>
<td width="71">
<p align="center">Modulation</p>
</td>
<td width="79">
<p align="center">Bits/Symbol</p>
</td>
<td width="79">
<p align="center">REs/PRB</p>
</td>
<td width="64">
<p align="center">N_RB</p>
</td>
<td width="64">
<p align="center">MCS</p>
</td>
<td width="71">
<p align="center">TBS</p>
</td>
<td width="89">
<p align="center">Code Rate</p>
</td>
</tr>
<tr>
<td>
<p align="center">1</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">0</p>
</td>
<td>
<p align="center">536</p>
</td>
<td>
<p align="center">0.101449</p>
</td>
</tr>
<tr>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">0</p>
</td>
<td>
<p align="center">536</p>
</td>
<td>
<p align="center">0.101449</p>
</td>
</tr>
<tr>
<td>
<p align="center">3</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">872</p>
</td>
<td>
<p align="center">0.162319</p>
</td>
</tr>
<tr>
<td>
<p align="center">4</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">5</p>
</td>
<td>
<p align="center">1736</p>
</td>
<td>
<p align="center">0.318841</p>
</td>
</tr>
<tr>
<td>
<p align="center">5</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">7</p>
</td>
<td>
<p align="center">2417</p>
</td>
<td>
<p align="center">0.442210</p>
</td>
</tr>
<tr>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">QPSK</p>
</td>
<td>
<p align="center">2</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">9</p>
</td>
<td>
<p align="center">3112</p>
</td>
<td>
<p align="center">0.568116</p>
</td>
</tr>
<tr>
<td>
<p align="center">7</p>
</td>
<td>
<p align="center">16QAM</p>
</td>
<td>
<p align="center">4</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">12</p>
</td>
<td>
<p align="center">4008</p>
</td>
<td>
<p align="center">0.365217</p>
</td>
</tr>
<tr>
<td>
<p align="center">8</p>
</td>
<td>
<p align="center">16QAM</p>
</td>
<td>
<p align="center">4</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">14</p>
</td>
<td>
<p align="center">5160</p>
</td>
<td>
<p align="center">0.469565</p>
</td>
</tr>
<tr>
<td>
<p align="center">9</p>
</td>
<td>
<p align="center">16QAM</p>
</td>
<td>
<p align="center">4</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">16</p>
</td>
<td>
<p align="center">6200</p>
</td>
<td>
<p align="center">0.563768</p>
</td>
</tr>
<tr>
<td>
<p align="center">10</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">7992</p>
</td>
<td>
<p align="center">0.484058</p>
</td>
</tr>
<tr>
<td>
<p align="center">11</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">23</p>
</td>
<td>
<p align="center">9912</p>
</td>
<td>
<p align="center">0.600000</p>
</td>
</tr>
<tr>
<td>
<p align="center">12</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">25</p>
</td>
<td>
<p align="center">11448</p>
</td>
<td>
<p align="center">0.692754</p>
</td>
</tr>
<tr>
<td>
<p align="center">13</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">27</p>
</td>
<td>
<p align="center">12576</p>
</td>
<td>
<p align="center">0.760870</p>
</td>
</tr>
<tr>
<td>
<p align="center">14</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">28</p>
</td>
<td>
<p align="center">14688</p>
</td>
<td>
<p align="center">0.888406</p>
</td>
</tr>
<tr>
<td>
<p align="center">15</p>
</td>
<td>
<p align="center">64QAM</p>
</td>
<td>
<p align="center">6</p>
</td>
<td>
<p align="center">138</p>
</td>
<td>
<p align="center">20</p>
</td>
<td>
<p align="center">28</p>
</td>
<td>
<p align="center">14688</p>
</td>
<td>
<p align="center">0.888406</p>
</td>
</tr>
</tbody>
</table>
</div>
<p>&nbsp;</p>
<p>MCS</p>
<p>&nbsp;</p>
<p>Table 7.1.7.1-1: Modulation and TBS index table for PDSCH</p>
<table border="1" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td>MCS Index</td>
<td>Modulation Order</td>
<td>TBS Index</td>
</tr>
<tr>
<td><b>0</b></td>
<td>2</td>
<td>0</td>
</tr>
<tr>
<td><b>1</b></td>
<td>2</td>
<td>1</td>
</tr>
<tr>
<td><b>2</b></td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td><b>3</b></td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td><b>4</b></td>
<td>2</td>
<td>4</td>
</tr>
<tr>
<td><b>5</b></td>
<td>2</td>
<td>5</td>
</tr>
<tr>
<td><b>6</b></td>
<td>2</td>
<td>6</td>
</tr>
<tr>
<td><b>7</b></td>
<td>2</td>
<td>7</td>
</tr>
<tr>
<td><b>8</b></td>
<td>2</td>
<td>8</td>
</tr>
<tr>
<td><b>9</b></td>
<td>2</td>
<td>9</td>
</tr>
<tr>
<td><b>10</b></td>
<td>4</td>
<td>9</td>
</tr>
<tr>
<td><b>11</b></td>
<td>4</td>
<td>10</td>
</tr>
<tr>
<td><b>12</b></td>
<td>4</td>
<td>11</td>
</tr>
<tr>
<td><b>13</b></td>
<td>4</td>
<td>12</td>
</tr>
<tr>
<td><b>14</b></td>
<td>4</td>
<td>13</td>
</tr>
<tr>
<td><b>15</b></td>
<td>4</td>
<td>14</td>
</tr>
<tr>
<td><b>16</b></td>
<td>4</td>
<td>15</td>
</tr>
<tr>
<td><b>17</b></td>
<td>6</td>
<td>15</td>
</tr>
<tr>
<td><b>18</b></td>
<td>6</td>
<td>16</td>
</tr>
<tr>
<td><b>19</b></td>
<td>6</td>
<td>17</td>
</tr>
<tr>
<td><b>20</b></td>
<td>6</td>
<td>18</td>
</tr>
<tr>
<td><b>21</b></td>
<td>6</td>
<td>19</td>
</tr>
<tr>
<td><b>22</b></td>
<td>6</td>
<td>20</td>
</tr>
<tr>
<td><b>23</b></td>
<td>6</td>
<td>21</td>
</tr>
<tr>
<td><b>24</b></td>
<td>6</td>
<td>22</td>
</tr>
<tr>
<td><b>25</b></td>
<td>6</td>
<td>23</td>
</tr>
<tr>
<td><b>26</b></td>
<td>6</td>
<td>24</td>
</tr>
<tr>
<td><b>27</b></td>
<td>6</td>
<td>25</td>
</tr>
<tr>
<td><b>28</b></td>
<td>6</td>
<td>26</td>
</tr>
<tr>
<td><b>29</b></td>
<td>2</td>
<td rowspan="3">reserved</td>
</tr>
<tr>
<td><b>30</b></td>
<td>4</td>
</tr>
<tr>
<td><b>31</b></td>
<td>6</td>
</tr>
</tbody>
</table>
<p>TBS Index (部份)</p>
<p>Table 7.1.7.2.1-1: Transport block size table (dimension 27×110)</p>
<div align="center">
<table border="1" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td rowspan="2" width="18"></td>
<td colspan="10"></td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
<tr>
<td width="18">
<p align="center">0</p>
</td>
<td>
<p align="center">16</p>
</td>
<td>
<p align="center">32</p>
</td>
<td>
<p align="center">56</p>
</td>
<td>
<p align="center">88</p>
</td>
<td>
<p align="center">120</p>
</td>
<td>
<p align="center">152</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">224</p>
</td>
<td>
<p align="center">256</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">1</p>
</td>
<td>
<p align="center">24</p>
</td>
<td>
<p align="center">56</p>
</td>
<td>
<p align="center">88</p>
</td>
<td>
<p align="center">144</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">224</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">344</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">2</p>
</td>
<td>
<p align="center">32</p>
</td>
<td>
<p align="center">72</p>
</td>
<td>
<p align="center">144</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">296</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">376</p>
</td>
<td>
<p align="center">424</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">3</p>
</td>
<td>
<p align="center">40</p>
</td>
<td>
<p align="center">104</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">392</p>
</td>
<td>
<p align="center">440</p>
</td>
<td>
<p align="center">504</p>
</td>
<td>
<p align="center">568</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">4</p>
</td>
<td>
<p align="center">56</p>
</td>
<td>
<p align="center">120</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">408</p>
</td>
<td>
<p align="center">488</p>
</td>
<td>
<p align="center">552</p>
</td>
<td>
<p align="center">632</p>
</td>
<td>
<p align="center">696</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">5</p>
</td>
<td>
<p align="center">72</p>
</td>
<td>
<p align="center">144</p>
</td>
<td>
<p align="center">224</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">424</p>
</td>
<td>
<p align="center">504</p>
</td>
<td>
<p align="center">600</p>
</td>
<td>
<p align="center">680</p>
</td>
<td>
<p align="center">776</p>
</td>
<td>
<p align="center">872</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">6</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">392</p>
</td>
<td>
<p align="center">504</p>
</td>
<td>
<p align="center">600</p>
</td>
<td>
<p align="center">712</p>
</td>
<td>
<p align="center">808</p>
</td>
<td>
<p align="center">936</p>
</td>
<td>
<p align="center">1032</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">7</p>
</td>
<td>
<p align="center">104</p>
</td>
<td>
<p align="center">224</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">472</p>
</td>
<td>
<p align="center">584</p>
</td>
<td>
<p align="center">712</p>
</td>
<td>
<p align="center">840</p>
</td>
<td>
<p align="center">968</p>
</td>
<td>
<p align="center">1096</p>
</td>
<td>
<p align="center">1224</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">8</p>
</td>
<td>
<p align="center">120</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">392</p>
</td>
<td>
<p align="center">536</p>
</td>
<td>
<p align="center">680</p>
</td>
<td>
<p align="center">808</p>
</td>
<td>
<p align="center">968</p>
</td>
<td>
<p align="center">1096</p>
</td>
<td>
<p align="center">1256</p>
</td>
<td>
<p align="center">1384</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">9</p>
</td>
<td>
<p align="center">136</p>
</td>
<td>
<p align="center">296</p>
</td>
<td>
<p align="center">456</p>
</td>
<td>
<p align="center">616</p>
</td>
<td>
<p align="center">776</p>
</td>
<td>
<p align="center">936</p>
</td>
<td>
<p align="center">1096</p>
</td>
<td>
<p align="center">1256</p>
</td>
<td>
<p align="center">1416</p>
</td>
<td>
<p align="center">1544</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">10</p>
</td>
<td>
<p align="center">144</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">504</p>
</td>
<td>
<p align="center">680</p>
</td>
<td>
<p align="center">872</p>
</td>
<td>
<p align="center">1032</p>
</td>
<td>
<p align="center">1224</p>
</td>
<td>
<p align="center">1384</p>
</td>
<td>
<p align="center">1544</p>
</td>
<td>
<p align="center">1736</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">11</p>
</td>
<td>
<p align="center">176</p>
</td>
<td>
<p align="center">376</p>
</td>
<td>
<p align="center">584</p>
</td>
<td>
<p align="center">776</p>
</td>
<td>
<p align="center">1000</p>
</td>
<td>
<p align="center">1192</p>
</td>
<td>
<p align="center">1384</p>
</td>
<td>
<p align="center">1608</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2024</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">12</p>
</td>
<td>
<p align="center">208</p>
</td>
<td>
<p align="center">440</p>
</td>
<td>
<p align="center">680</p>
</td>
<td>
<p align="center">904</p>
</td>
<td>
<p align="center">1128</p>
</td>
<td>
<p align="center">1352</p>
</td>
<td>
<p align="center">1608</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2024</p>
</td>
<td>
<p align="center">2280</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">13</p>
</td>
<td>
<p align="center">224</p>
</td>
<td>
<p align="center">488</p>
</td>
<td>
<p align="center">744</p>
</td>
<td>
<p align="center">1000</p>
</td>
<td>
<p align="center">1256</p>
</td>
<td>
<p align="center">1544</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2024</p>
</td>
<td>
<p align="center">2280</p>
</td>
<td>
<p align="center">2536</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">14</p>
</td>
<td>
<p align="center">256</p>
</td>
<td>
<p align="center">552</p>
</td>
<td>
<p align="center">840</p>
</td>
<td>
<p align="center">1128</p>
</td>
<td>
<p align="center">1416</p>
</td>
<td>
<p align="center">1736</p>
</td>
<td>
<p align="center">1992</p>
</td>
<td>
<p align="center">2280</p>
</td>
<td>
<p align="center">2600</p>
</td>
<td>
<p align="center">2856</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">15</p>
</td>
<td>
<p align="center">280</p>
</td>
<td>
<p align="center">600</p>
</td>
<td>
<p align="center">904</p>
</td>
<td>
<p align="center">1224</p>
</td>
<td>
<p align="center">1544</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2152</p>
</td>
<td>
<p align="center">2472</p>
</td>
<td>
<p align="center">2728</p>
</td>
<td>
<p align="center">3112</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">16</p>
</td>
<td>
<p align="center">328</p>
</td>
<td>
<p align="center">632</p>
</td>
<td>
<p align="center">968</p>
</td>
<td>
<p align="center">1288</p>
</td>
<td>
<p align="center">1608</p>
</td>
<td>
<p align="center">1928</p>
</td>
<td>
<p align="center">2280</p>
</td>
<td>
<p align="center">2600</p>
</td>
<td>
<p align="center">2984</p>
</td>
<td>
<p align="center">3240</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">17</p>
</td>
<td>
<p align="center">336</p>
</td>
<td>
<p align="center">696</p>
</td>
<td>
<p align="center">1064</p>
</td>
<td>
<p align="center">1416</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2152</p>
</td>
<td>
<p align="center">2536</p>
</td>
<td>
<p align="center">2856</p>
</td>
<td>
<p align="center">3240</p>
</td>
<td>
<p align="center">3624</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">18</p>
</td>
<td>
<p align="center">376</p>
</td>
<td>
<p align="center">776</p>
</td>
<td>
<p align="center">1160</p>
</td>
<td>
<p align="center">1544</p>
</td>
<td>
<p align="center">1992</p>
</td>
<td>
<p align="center">2344</p>
</td>
<td>
<p align="center">2792</p>
</td>
<td>
<p align="center">3112</p>
</td>
<td>
<p align="center">3624</p>
</td>
<td>
<p align="center">4008</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">19</p>
</td>
<td>
<p align="center">408</p>
</td>
<td>
<p align="center">840</p>
</td>
<td>
<p align="center">1288</p>
</td>
<td>
<p align="center">1736</p>
</td>
<td>
<p align="center">2152</p>
</td>
<td>
<p align="center">2600</p>
</td>
<td>
<p align="center">2984</p>
</td>
<td>
<p align="center">3496</p>
</td>
<td>
<p align="center">3880</p>
</td>
<td>
<p align="center">4264</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">20</p>
</td>
<td>
<p align="center">440</p>
</td>
<td>
<p align="center">904</p>
</td>
<td>
<p align="center">1384</p>
</td>
<td>
<p align="center">1864</p>
</td>
<td>
<p align="center">2344</p>
</td>
<td>
<p align="center">2792</p>
</td>
<td>
<p align="center">3240</p>
</td>
<td>
<p align="center">3752</p>
</td>
<td>
<p align="center">4136</p>
</td>
<td>
<p align="center">4584</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">21</p>
</td>
<td>
<p align="center">488</p>
</td>
<td>
<p align="center">1000</p>
</td>
<td>
<p align="center">1480</p>
</td>
<td>
<p align="center">1992</p>
</td>
<td>
<p align="center">2472</p>
</td>
<td>
<p align="center">2984</p>
</td>
<td>
<p align="center">3496</p>
</td>
<td>
<p align="center">4008</p>
</td>
<td>
<p align="center">4584</p>
</td>
<td>
<p align="center">4968</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">22</p>
</td>
<td>
<p align="center">520</p>
</td>
<td>
<p align="center">1064</p>
</td>
<td>
<p align="center">1608</p>
</td>
<td>
<p align="center">2152</p>
</td>
<td>
<p align="center">2664</p>
</td>
<td>
<p align="center">3240</p>
</td>
<td>
<p align="center">3752</p>
</td>
<td>
<p align="center">4264</p>
</td>
<td>
<p align="center">4776</p>
</td>
<td>
<p align="center">5352</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">23</p>
</td>
<td>
<p align="center">552</p>
</td>
<td>
<p align="center">1128</p>
</td>
<td>
<p align="center">1736</p>
</td>
<td>
<p align="center">2280</p>
</td>
<td>
<p align="center">2856</p>
</td>
<td>
<p align="center">3496</p>
</td>
<td>
<p align="center">4008</p>
</td>
<td>
<p align="center">4584</p>
</td>
<td>
<p align="center">5160</p>
</td>
<td>
<p align="center">5736</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">24</p>
</td>
<td>
<p align="center">584</p>
</td>
<td>
<p align="center">1192</p>
</td>
<td>
<p align="center">1800</p>
</td>
<td>
<p align="center">2408</p>
</td>
<td>
<p align="center">2984</p>
</td>
<td>
<p align="center">3624</p>
</td>
<td>
<p align="center">4264</p>
</td>
<td>
<p align="center">4968</p>
</td>
<td>
<p align="center">5544</p>
</td>
<td>
<p align="center">5992</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">25</p>
</td>
<td>
<p align="center">616</p>
</td>
<td>
<p align="center">1256</p>
</td>
<td>
<p align="center">1864</p>
</td>
<td>
<p align="center">2536</p>
</td>
<td>
<p align="center">3112</p>
</td>
<td>
<p align="center">3752</p>
</td>
<td>
<p align="center">4392</p>
</td>
<td>
<p align="center">5160</p>
</td>
<td>
<p align="center">5736</p>
</td>
<td>
<p align="center">6200</p>
</td>
</tr>
<tr>
<td width="18">
<p align="center">26</p>
</td>
<td>
<p align="center">712</p>
</td>
<td>
<p align="center">1480</p>
</td>
<td>
<p align="center">2216</p>
</td>
<td>
<p align="center">2984</p>
</td>
<td>
<p align="center">3752</p>
</td>
<td>
<p align="center">4392</p>
</td>
<td>
<p align="center">5160</p>
</td>
<td>
<p align="center">5992</p>
</td>
<td>
<p align="center">6712</p>
</td>
<td>
<p align="center">7480</p>
</td>
</tr>
</tbody>
</table>
</div>
<p>&nbsp;</p>
<p>依公式</p>
<p>Transport block size is 776 bits for ITBS = 18 and NPRB=2</p>
<p>code rate = (TBS + CRC) / (RE x Bits per RE)</p>
<p>code rate = (776 + 24) / (302 * 6 ) = 0.4</p>
<p>詳情請見</p>
<p><a href="http://4g-lte-world.blogspot.tw/2012/12/transport-block-size-code-rate-protocol.html" target="_blank" rel="noopener">http://4g-lte-world.blogspot.tw/2012/12/transport-block-size-code-rate-protocol.html</a></p>
<p>&nbsp;</p>
<p>以下引用自書<a href="http://baike.baidu.com/view/7739320.htm" target="_blank" rel="noopener">LTE 關鍵技術與無線性能</a><br />
覺得整理的還不錯</p>
<p><a href="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235536_10701830704_o.jpg"><img decoding="async" class="aligncenter size-large wp-image-3214" src="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235536_10701830704_o-1024x579.jpg" alt="" width="620" height="351" srcset="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235536_10701830704_o-1024x579.jpg 1024w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235536_10701830704_o-300x170.jpg 300w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235536_10701830704_o-768x434.jpg 768w" sizes="(max-width: 620px) 100vw, 620px" /></a> <a href="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o.jpg"><img loading="lazy" decoding="async" class="aligncenter size-large wp-image-3215" src="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o-579x1024.jpg" alt="" width="579" height="1024" srcset="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o-579x1024.jpg 579w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o-170x300.jpg 170w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o-768x1358.jpg 768w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235556_10701829804_o.jpg 1520w" sizes="(max-width: 579px) 100vw, 579px" /></a> <a href="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235606_10701777765_o.jpg"><img loading="lazy" decoding="async" class="aligncenter size-large wp-image-3217" src="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235606_10701777765_o-1024x579.jpg" alt="" width="620" height="351" srcset="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235606_10701777765_o-1024x579.jpg 1024w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235606_10701777765_o-300x170.jpg 300w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235606_10701777765_o-768x434.jpg 768w" sizes="(max-width: 620px) 100vw, 620px" /></a> <a href="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o.jpg"><img loading="lazy" decoding="async" class="aligncenter size-large wp-image-3218" src="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o-579x1024.jpg" alt="" width="579" height="1024" srcset="https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o-579x1024.jpg 579w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o-170x300.jpg 170w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o-768x1358.jpg 768w, https://blog.richliu.com/wp-content/uploads/2013/10/2013-10-21-235615_10702025233_o.jpg 1520w" sizes="(max-width: 579px) 100vw, 579px" /></a></p>
<p>Ref.<br />
<a href="http://www.3gpp.org/ftp/specs/archive/36_series/36.213/" target="_blank" rel="noopener">3GPP 36.213</a> : 最主要的 Document.<br />
<a href="http://www.sharetechnote.com/html/Handbook_LTE_CQI.html" target="_blank" rel="noopener">http://www.sharetechnote.com/html/Handbook_LTE_CQI.html</a></p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/22/1545/cqi-and-mcs/">CQI and MCS</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></content:encoded>
					
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			<slash:comments>0</slash:comments>
		
		
			</item>
		<item>
		<title>LTE SON (Self-Organizing Networks) 自組織網路</title>
		<link>https://blog.richliu.com/2013/10/04/1526/lte-son-self-organizing-networks-%e8%87%aa%e7%b5%84%e7%b9%94%e7%b6%b2%e8%b7%af/</link>
					<comments>https://blog.richliu.com/2013/10/04/1526/lte-son-self-organizing-networks-%e8%87%aa%e7%b5%84%e7%b9%94%e7%b6%b2%e8%b7%af/#respond</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Fri, 04 Oct 2013 07:04:17 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[eICIC]]></category>
		<category><![CDATA[eSON]]></category>
		<category><![CDATA[ICIC]]></category>
		<category><![CDATA[lte]]></category>
		<category><![CDATA[Self-Organizing Networks]]></category>
		<category><![CDATA[SON]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1526</guid>

					<description><![CDATA[<p>本篇為筆記, 未完, 以後再來看 www.ericsson.com/res/site_TW/docs/arti [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/04/1526/lte-son-self-organizing-networks-%e8%87%aa%e7%b5%84%e7%b9%94%e7%b6%b2%e8%b7%af/">LTE SON (Self-Organizing Networks) 自組織網路</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>本篇為筆記, 未完, 以後再來看</p>
<p>www.ericsson.com/res/site_TW/docs/article_2011_vol02_03.pdf‎</p>
<p>http://www.3gpp.org/SON<br />
&#8220;This is the dynamic plug-and-play configuration of newly deployed eNBs. The eNB will by itself configure the Physical Cell Identity, transmission frequency and power, leading to faster cell planning and rollout.&#8221;</p>
<p>SPEC<br />
<a href="http://www.3gpp.org/ftp/Specs/html-info/32500.htm" target="_blank" rel="noopener">3GPP Specification detail</a><br />
<a href="http://www.3gpp.org/ftp/Specs/html-info/36902.htm" target="_blank" rel="noopener">Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Self-configuring and self-optimizing network (SON) use cases and solutions</a></p>
<p>http://airhopcomm-web.com/eson-solutions/solutions/eson-suite-1-0/</p>
<p>ICIC and eICIC (Inter-cell interference coordination) # 協調各個 BS 使用不用的 RB (Resource block) 以減少BS鄰近干擾的技術.<br />
http://4g-lte-world.blogspot.tw/2012/06/icic-and-eicic.html</p>
<p>http://xdxdd.blogspot.tw/2012/10/lte-icicinter-cell-interference.html</p>
<p><a href="http://wwwen.zte.com.cn/endata/magazine/ztetechnologies/2009year/no5/articles/200905/t20090518_171482.html" target="_blank" rel="noopener">LTE SON: How Does It Work?</a></p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/04/1526/lte-son-self-organizing-networks-%e8%87%aa%e7%b5%84%e7%b9%94%e7%b6%b2%e8%b7%af/">LTE SON (Self-Organizing Networks) 自組織網路</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></content:encoded>
					
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			<slash:comments>0</slash:comments>
		
		
			</item>
		<item>
		<title>LTE idle mode.</title>
		<link>https://blog.richliu.com/2013/10/04/1523/lte-idle-mode/</link>
					<comments>https://blog.richliu.com/2013/10/04/1523/lte-idle-mode/#respond</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Fri, 04 Oct 2013 06:56:48 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[idle mode]]></category>
		<category><![CDATA[lte]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1523</guid>

					<description><![CDATA[<p>本篇是筆記, 未完 有點複雜, 先記著, 以後再來看. http://www.mem.com.tw/artic [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/04/1523/lte-idle-mode/">LTE idle mode.</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>本篇是筆記, 未完<br />
有點複雜, 先記著, 以後再來看.</p>
<p>http://www.mem.com.tw/article_content.asp?sn=1109140004&#038;page=2</p>
<p>http://www.slideshare.net/allabout4g/lte-paging-process</p>
<p>http://www.google.com.tw/url?sa=t&#038;rct=j&#038;q=&#038;esrc=s&#038;source=web&#038;cd=5&#038;ved=0CF0QFjAE&#038;url=http%3A%2F%2Fbooksite.elsevier.com%2F9780124158443%2Fdownloads%2FChapter_21_PowerEff_Slides.ppt&#038;ei=K2NOUu_0E4rylAXsnoGQBQ&#038;usg=AFQjCNHa3ZyvV5rY7npFZ3HbJkOpcNh9DA&#038;sig2=oKFWFHkCdQJbBbdWgwzLAg</p>
<p>http://lteuniversity.com/ask_the_expert/f/59/p/4241/13213.aspx</p>
<p>http://www.3gpp.org/ftp/Specs/html-info/36304.htm</p>
<p>Keyword: LTE idle pager. </p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/10/04/1523/lte-idle-mode/">LTE idle mode.</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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		<title>EARFCN : EUTRA Absolute radio-frequency channel number</title>
		<link>https://blog.richliu.com/2013/09/25/1519/earfcn-eutra-absolute-radio-frequency-channel-number/</link>
					<comments>https://blog.richliu.com/2013/09/25/1519/earfcn-eutra-absolute-radio-frequency-channel-number/#respond</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Wed, 25 Sep 2013 15:35:19 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[EARFCN]]></category>
		<category><![CDATA[Frequency]]></category>
		<category><![CDATA[lte]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1519</guid>

					<description><![CDATA[<p>如果要找 LTE 頻率和 EARFCN 的資訊, 這個網站可以協助不少 http://niviuk.free. [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/09/25/1519/earfcn-eutra-absolute-radio-frequency-channel-number/">EARFCN : EUTRA Absolute radio-frequency channel number</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>如果要找 LTE 頻率和 EARFCN 的資訊, 這個網站可以協助不少<br />
<a href="http://niviuk.free.fr/lte_band.php" target="_blank" rel="noopener">http://niviuk.free.fr/lte_band.php</a></p>
<p>在設定 eNodeB 的時候會用到. </p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/09/25/1519/earfcn-eutra-absolute-radio-frequency-channel-number/">EARFCN : EUTRA Absolute radio-frequency channel number</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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		<title>LTE UE Category and Class Definitions</title>
		<link>https://blog.richliu.com/2013/09/23/1514/lte-ue-category-and-class-definitions/</link>
					<comments>https://blog.richliu.com/2013/09/23/1514/lte-ue-category-and-class-definitions/#respond</comments>
		
		<dc:creator><![CDATA[richliu]]></dc:creator>
		<pubDate>Mon, 23 Sep 2013 00:52:56 +0000</pubDate>
				<category><![CDATA[LTE]]></category>
		<category><![CDATA[category]]></category>
		<category><![CDATA[lte]]></category>
		<guid isPermaLink="false">http://blog.richliu.com/?p=1514</guid>

					<description><![CDATA[<p>&#160; A summary of the different LTE UE category param [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/09/23/1514/lte-ue-category-and-class-definitions/">LTE UE Category and Class Definitions</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>&nbsp;</p>
<p>A summary of the different LTE UE category parameters provided by the 3GPP Rel 8 standard is given in the tables below.</p>
<p>&nbsp;</p>
<table width="80%">
<thead>
<tr>
<th>Category</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
</tr>
</thead>
<tbody>
<tr>
<td>Downlink</td>
<td>10</td>
<td>50</td>
<td>100</td>
<td>150</td>
<td>300</td>
</tr>
<tr>
<td>Uplink</td>
<td>5</td>
<td>25</td>
<td>50</td>
<td>50</td>
<td>75</td>
</tr>
</tbody>
</table>
<p><center><b>LTE UE category data rates</b></center></p>
<table width="80%">
<thead>
<tr>
<th>Category</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
</tr>
</thead>
<tbody>
<tr>
<td>Downlink</td>
<td colspan="5"><center>QPSK, 16QAM, 64QAM</center></td>
</tr>
<tr>
<td>Uplink</td>
<td colspan="4"><center>QPSK, 16QAM</center></td>
<td>QPSK,<br />
16QAM,<br />
64QAM</td>
</tr>
</tbody>
</table>
<p><center><b>LTE UE category modulation formats supported</b></center></p>
<table width="80%">
<thead>
<tr>
<th>Category</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
</tr>
</thead>
<tbody>
<tr>
<td>2 Rx diversity</td>
<td colspan="5"><center>Assumed in performance requirements across all LTE UE categories</center></td>
</tr>
<tr>
<td>2 x 2 MIMO</td>
<td><center>Not<br />
supported</center></td>
<td colspan="4"><center>Mandatory</center></td>
</tr>
<tr>
<td>4 x 4 MIMO</td>
<td colspan="4"><center>Not supported</center></td>
<td><center>Mandatory</center></td>
</tr>
</tbody>
</table>
<p><center><b>LTE UE category MIMO antenna configurations</b></center><b>Note:</b> Bandwidth for all categories is 20 MHz.</p>
<p>所以如果只是 10MHz 2&#215;2 MIMO, 只有 Downstream 75MBits/s Upstream 20Mbits 左右的速度, 只需要用到 Category 3. 再高也沒有必要</p>
<p>Source:<br />
<a href="http://www.radio-electronics.com/info/cellulartelecomms/lte-long-term-evolution/ue-category-categories-classes.php" target="_blank" rel="noopener">LTE UE Category and Class Definitions</a></p>
<p>Update<br />
http://lteuniversity.com/get_trained/expert_opinion1/b/raysulewski/archive/2013/01/16/how-fast-can-my-lte-smartphone-go.aspx</p>
<p>The post <a rel="nofollow" href="https://blog.richliu.com/2013/09/23/1514/lte-ue-category-and-class-definitions/">LTE UE Category and Class Definitions</a> appeared first on <a rel="nofollow" href="https://blog.richliu.com">richliu&#039;s blog</a>.</p>
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