1、Leaders: provincial agricultural work Conference held in XX, which is our concern and love, will greatly promote XX agricultural and rural economic development. First of all, I am representing XX municipal party Committee and Government, extend a warm welcome to the attending leaders! XX has been gi
2、ven support and assistance to the province of agriculture, provincial agricultural Office, and expressed heartfelt thanks to all the friends! below, I XX with a brief report. A basic XX of XX municipality located (cities, omitted). One is the superior ecological environment. XX blue, clear, green, w
3、ater, air, 70% of land in the territory is covered with forests, grasslands, wetlands and waters, built 7 thousands of square kilometers of the total area of nature reserves. Within major industrial pollution sources, air quality at the national level, national levels, water quality, soil pollution,
4、 “pure land“ reputation, was heralded by the United Nations environmental officials “the most suitable place for human survival.“ Second, the enrichment of natural resources. A total area of more than 5 million mu of arable land (which owned 1.53 million acres), the annual grain output of more than
5、2 million tons and is located in the internationally recognized gold “cattle“, there should be more than 400,000 acres of grazing grassland, developing animal husbandry conditions; a total area of 4.1 million acres of forest land, rich in precious wood such as pine, ash, yellow pineapple, standing t
6、imber volume of more than 26 million cubic meters. Forest Xia has hundreds of species precious wildlife, more than 200 more species precious herbs, annual Super thousand tons of wild mushroom and reserves Super 100,000 tons of mountain dish; nectar plant throughout, can bee 100,000 group, is China “
7、bee of Xiang“, and national Northeast black bee reserves and important of bee products production base; can using water 2.5 billion cubic metres, should be fishing water 460,000 acres, rich big salmon, and “three spent five Luo“, North cold water specialty fish; found and proved reserves of mineral
8、resources has 36 species. Third, geopolitical advantages. XX open midpoint is located in the eastern part of the province along the border, 264 km long border, with national road passenger and freight transport port, built on the border between China and Russia has the largest permanent boundary Riv
9、er Bridge, running at full capacity the annual cargo capacity of up to 2.6 million tons. Russia two (HABA and Marina), two cities (Iman and Lesozavodsk) is the Russian Far East in developed areas. Lesozavodsk is only 8 km from XX port corresponding to the port of markovo, Lu Rinuo station is one of
10、three railway marshalling yards in the far East, the far East-Siberian railway and a parallel road runs through the pass. By rail and road, to the North by HABA capital Khabarovsk, the Russian hinterland, radiation in the CIS and Eastern European countries; to the South through the port of Vladivost
11、ok and the nahuo card on the sea, to reach South Korea, Japan and other Pacific Rim countries and regions. Four is rich in tourism resources. XX tourist resources types, many attractions, beautiful scenery of the Sino-Russian border-river-wusuli River, a famous treasure island, known as the “Orienta
12、l Maginot line“ of the Japanese invading army Tiger underground fortress ruins, General Chi认识与生产实习摘要：为巩固通信工程专业的主业知识，提高对实际操作生产技能的认识，加深对通信相关产品和生产流程的具体，了解更多的关于通信方面课本以外的知识，为以后对本专业课的学习有更好的帮助。通过本次实习初步了解通信行业现状及具体设备，了解我国目前通信的基本情况和模式；了解目前我国的通信需求和发展方向；初步实践自己在学校期间所学知识,作到如何才能更好的将自己所学专业知识运用到工作中；通过实践来培养和强化社会沟通能力；
13、确定自己将来的发展起点和目标；发现自身差距,培养创新进取的精神；培养良好的职业精神,适应毕业后的实际工作要求。此次见习的根本目的是：去实地上更多的了解通信专业的相关知识，丰富自己的理论知识，开阔自己的视野，并使自己对以后的工作有更加明确的认识！ 关键字：LTE;数据通信；协议；天线；PTN目录Leaders: provincial agricultural work Conference held in XX, which is our concern and love, will greatly promote XX agricultural and rural economic devel
14、opment. First of all, I am representing XX municipal party Committee and Government, extend a warm welcome to the attending leaders! XX has been given support and assistance to the province of agriculture, provincial agricultural Office, and expressed heartfelt thanks to all the friends! below, I XX
15、 with a brief report. A basic XX of XX municipality located (cities, omitted). One is the superior ecological environment. XX blue, clear, green, water, air, 70% of land in the territory is covered with forests, grasslands, wetlands and waters, built 7 thousands of square kilometers of the total are
16、a of nature reserves. Within major industrial pollution sources, air quality at the national level, national levels, water quality, soil pollution, “pure land“ reputation, was heralded by the United Nations environmental officials “the most suitable place for human survival.“ Second, the enrichment
17、of natural resources. A total area of more than 5 million mu of arable land (which owned 1.53 million acres), the annual grain output of more than 2 million tons and is located in the internationally recognized gold “cattle“, there should be more than 400,000 acres of grazing grassland, developing a
18、nimal husbandry conditions; a total area of 4.1 million acres of forest land, rich in precious wood such as pine, ash, yellow pineapple, standing timber volume of more than 26 million cubic meters. Forest Xia has hundreds of species precious wildlife, more than 200 more species precious herbs, annua
19、l Super thousand tons of wild mushroom and reserves Super 100,000 tons of mountain dish; nectar plant throughout, can bee 100,000 group, is China “bee of Xiang“, and national Northeast black bee reserves and important of bee products production base; can using water 2.5 billion cubic metres, should
20、be fishing water 460,000 acres, rich big salmon, and “three spent five Luo“, North cold water specialty fish; found and proved reserves of mineral resources has 36 species. Third, geopolitical advantages. XX open midpoint is located in the eastern part of the province along the border, 264 km long b
21、order, with national road passenger and freight transport port, built on the border between China and Russia has the largest permanent boundary River Bridge, running at full capacity the annual cargo capacity of up to 2.6 million tons. Russia two (HABA and Marina), two cities (Iman and Lesozavodsk)
22、is the Russian Far East in developed areas. Lesozavodsk is only 8 km from XX port corresponding to the port of markovo, Lu Rinuo station is one of three railway marshalling yards in the far East, the far East-Siberian railway and a parallel road runs through the pass. By rail and road, to the North
23、by HABA capital Khabarovsk, the Russian hinterland, radiation in the CIS and Eastern European countries; to the South through the port of Vladivostok and the nahuo card on the sea, to reach South Korea, Japan and other Pacific Rim countries and regions. Four is rich in tourism resources. XX tourist
24、resources types, many attractions, beautiful scenery of the Sino-Russian border-river-wusuli River, a famous treasure island, known as the “Oriental Maginot line“ of the Japanese invading army Tiger underground fortress ruins, General Chi2实习内容简介 .3实习单位简介 .4专题内容简介 .5一、 LTE 简介 .5二、 网络优化简介 10三、 数据通信简介
25、18四、 PTN 简介 26实习收获体会 30参考文献 31Leaders: provincial agricultural work Conference held in XX, which is our concern and love, will greatly promote XX agricultural and rural economic development. First of all, I am representing XX municipal party Committee and Government, extend a warm welcome to the att
26、ending leaders! XX has been given support and assistance to the province of agriculture, provincial agricultural Office, and expressed heartfelt thanks to all the friends! below, I XX with a brief report. A basic XX of XX municipality located (cities, omitted). One is the superior ecological environ
27、ment. XX blue, clear, green, water, air, 70% of land in the territory is covered with forests, grasslands, wetlands and waters, built 7 thousands of square kilometers of the total area of nature reserves. Within major industrial pollution sources, air quality at the national level, national levels,
28、water quality, soil pollution, “pure land“ reputation, was heralded by the United Nations environmental officials “the most suitable place for human survival.“ Second, the enrichment of natural resources. A total area of more than 5 million mu of arable land (which owned 1.53 million acres), the ann
29、ual grain output of more than 2 million tons and is located in the internationally recognized gold “cattle“, there should be more than 400,000 acres of grazing grassland, developing animal husbandry conditions; a total area of 4.1 million acres of forest land, rich in precious wood such as pine, ash
30、, yellow pineapple, standing timber volume of more than 26 million cubic meters. Forest Xia has hundreds of species precious wildlife, more than 200 more species precious herbs, annual Super thousand tons of wild mushroom and reserves Super 100,000 tons of mountain dish; nectar plant throughout, can
31、 bee 100,000 group, is China “bee of Xiang“, and national Northeast black bee reserves and important of bee products production base; can using water 2.5 billion cubic metres, should be fishing water 460,000 acres, rich big salmon, and “three spent five Luo“, North cold water specialty fish; found a
32、nd proved reserves of mineral resources has 36 species. Third, geopolitical advantages. XX open midpoint is located in the eastern part of the province along the border, 264 km long border, with national road passenger and freight transport port, built on the border between China and Russia has the
33、largest permanent boundary River Bridge, running at full capacity the annual cargo capacity of up to 2.6 million tons. Russia two (HABA and Marina), two cities (Iman and Lesozavodsk) is the Russian Far East in developed areas. Lesozavodsk is only 8 km from XX port corresponding to the port of markov
34、o, Lu Rinuo station is one of three railway marshalling yards in the far East, the far East-Siberian railway and a parallel road runs through the pass. By rail and road, to the North by HABA capital Khabarovsk, the Russian hinterland, radiation in the CIS and Eastern European countries; to the South
35、 through the port of Vladivostok and the nahuo card on the sea, to reach South Korea, Japan and other Pacific Rim countries and regions. Four is rich in tourism resources. XX tourist resources types, many attractions, beautiful scenery of the Sino-Russian border-river-wusuli River, a famous treasure
36、 island, known as the “Oriental Maginot line“ of the Japanese invading army Tiger underground fortress ruins, General Chi3实习内容简介实习为期二十天，分别安排了以下任务： 第一天讲解 LTE 系统知识以及发展历史，LTE 演化路线以及 LTE 实现目标第二天讲解 LTE 网络架构以及 LTE/SAE 协议结构和 2/3G 网络架构差异第三天讲解 LTE 无线帧结构类型一与类型二，以及 FDD LTE eNodeB 产品概括和 BBU 单板结构第四天讲解了室内宏站与基站配置流
37、程第五天自主进行了基站配置第六天补充讲解了 LTE 物理资源分配-天线端口概念第七天讲解了网络优化相关内容，比如网络建设/规划/优化流程第八天讲解了基带信号如何处理以及 OFDMA 处理原理第九天讲解了天线知识及相关指标以及安装位置第十天讲解了网络规划流程中路测部分数据采集具体如何实施第十一天讲解了数据通信中网络互连基础（相关协议与 IP 地址分类）第十二天讲解了无类域间路由（CIDR）以及路由和路由协议第十三天讲解了数据通信标准和 IP 网络典型结构第十四天讲解了 VLAN 原理及配置第十五天讲解了 DHCP 的工作流程第十六天讲解了 PTN 基本概念以及提供业界最为完善的 PTN 产品第十
38、七天讲解了数据规划原则以及 IP 地址掩码相关计算第十八天讲解了 PTN 关键技术 PWE3第十九天自主进行了设备连接与脚本测试第二十天讲解了向端到端的 QoS 演进Leaders: provincial agricultural work Conference held in XX, which is our concern and love, will greatly promote XX agricultural and rural economic development. First of all, I am representing XX municipal party Commi
39、ttee and Government, extend a warm welcome to the attending leaders! XX has been given support and assistance to the province of agriculture, provincial agricultural Office, and expressed heartfelt thanks to all the friends! below, I XX with a brief report. A basic XX of XX municipality located (cit
40、ies, omitted). One is the superior ecological environment. XX blue, clear, green, water, air, 70% of land in the territory is covered with forests, grasslands, wetlands and waters, built 7 thousands of square kilometers of the total area of nature reserves. Within major industrial pollution sources,
41、 air quality at the national level, national levels, water quality, soil pollution, “pure land“ reputation, was heralded by the United Nations environmental officials “the most suitable place for human survival.“ Second, the enrichment of natural resources. A total area of more than 5 million mu of
42、arable land (which owned 1.53 million acres), the annual grain output of more than 2 million tons and is located in the internationally recognized gold “cattle“, there should be more than 400,000 acres of grazing grassland, developing animal husbandry conditions; a total area of 4.1 million acres of
43、 forest land, rich in precious wood such as pine, ash, yellow pineapple, standing timber volume of more than 26 million cubic meters. Forest Xia has hundreds of species precious wildlife, more than 200 more species precious herbs, annual Super thousand tons of wild mushroom and reserves Super 100,00
44、0 tons of mountain dish; nectar plant throughout, can bee 100,000 group, is China “bee of Xiang“, and national Northeast black bee reserves and important of bee products production base; can using water 2.5 billion cubic metres, should be fishing water 460,000 acres, rich big salmon, and “three spen
45、t five Luo“, North cold water specialty fish; found and proved reserves of mineral resources has 36 species. Third, geopolitical advantages. XX open midpoint is located in the eastern part of the province along the border, 264 km long border, with national road passenger and freight transport port,
46、built on the border between China and Russia has the largest permanent boundary River Bridge, running at full capacity the annual cargo capacity of up to 2.6 million tons. Russia two (HABA and Marina), two cities (Iman and Lesozavodsk) is the Russian Far East in developed areas. Lesozavodsk is only
47、8 km from XX port corresponding to the port of markovo, Lu Rinuo station is one of three railway marshalling yards in the far East, the far East-Siberian railway and a parallel road runs through the pass. By rail and road, to the North by HABA capital Khabarovsk, the Russian hinterland, radiation in
48、 the CIS and Eastern European countries; to the South through the port of Vladivostok and the nahuo card on the sea, to reach South Korea, Japan and other Pacific Rim countries and regions. Four is rich in tourism resources. XX tourist resources types, many attractions, beautiful scenery of the Sino
49、-Russian border-river-wusuli River, a famous treasure island, known as the “Oriental Maginot line“ of the Japanese invading army Tiger underground fortress ruins, General Chi4实习单位简介一、实习环境简介本次实习在北京中兴协力科技有限公司位于西安邮电大学长安校区的二、公司概况中兴通讯股份有限公司成立于 1985 年，是全球领先的综合通信解决方案提供商。公司通过为全球 100 多个国家和地区的电信运营商和企业网客户提供创新技术与产品解决方案，让全世界用户享有语音、数据、多媒体、无线宽带等全方位沟通。 3中兴通讯股份有限公司（英语：ZTE Corporation，前称：Zhongxing Telecommunication Equipment Corporation，简称中兴通讯，ZTE，深交所：000063、港交所：0763）是中国大陆开发生产通讯设备和终端的公司，全球领先的综合通信解决方案提供商，也是中国大陆最大的通信设备上市公司，全球第四大手机生产制造商。2015 年 7 月 2 日，中兴通讯携手联通发布“醉享”品牌手机。2015 年 7 月 10 日，中兴和软
