寬帶無線通信第3講---專題1

1、羅志年 副教授zhinianluo@hnu.edu.cn,Broadband Wireless Communications,寬帶無線通信,專題一,第五代移動通信系統(tǒng)（5G）,閱讀,IMT-2020（5G）推進組[1] 5G Vision and Requirements[2] White Paper on 5G Concept[3] 5G Wireless Technology Architecture White Paper

2、[4] 5G Network Technology Architecture White Paper[5] D Astely, E Dahlman, G Fodor et al. LTE release 12 and beyond [Accepted From Open Call]. IEEE Communications Magazine, vol. 51, pp. 154-160, 2013.[6] P H Kuo. New

3、 physical layer features of 3GPP LTE release-13 [Industry Perspectives]. IEEE Wireless Communications, vol. 22, pp. 4-5, 2015.[7] J Lee, Y. Kim, Y. Kwak, et al. LTE-advanced in 3GPP Rel -13/14: an evolution toward 5G,&

4、quot; IEEE Communications Magazine, vol. 54, pp. 36-42, 2016.,,,,,100MHz帶寬、1Gbps的峰值吞吐量，8X8天線配置,5G時間工作計劃（time plan）,Rel 8,9 LTERel 10 11 12 LTE-Advanced,work item工作項目,Enhancement增強,Study item研究項目,,3GPP 3rd Generation

5、 Partnership Project,3GPP成立于1998年12月，多個電信標準組織伙伴簽署了《第三代伙伴計劃協(xié)議》。3GPP最初的工作范圍是為第三代移動通信系統(tǒng)制定全球適用技術(shù)規(guī)范和技術(shù)報告。第三代移動通信系統(tǒng)基于的是發(fā)展的GSM核心網(wǎng)絡(luò)和它們所支持的無線接入技術(shù)，主要是UMTS。隨后3GPP的工作范圍得到了改進，增加了對UTRA長期演進系統(tǒng)的研究和標準制定。目前歐洲ETSI、美國TIA、日本TTC、ARIB、韓國TTA以及我國

6、CCSA作為3GPP的6個組織伙伴（OP）。目前獨立成員有300多家，此外，3GPP還有TD-SCDMA產(chǎn)業(yè)聯(lián)盟（TDIA）、TD-SCDMA論壇、CDMA發(fā)展組織（CDG）等13個市場伙伴（MRP）。,3GPP的組織結(jié)構(gòu)中，最上面是項目協(xié)調(diào)組（PCG），由ETSI、TIA、TTC、ARIB、TTA和CCSA 6個OP組成，對技術(shù)規(guī)范組（TSG）進行管理和協(xié)調(diào)。3GPP共分為4個TSG（之前為5個TSG，后CN和T合并為CT），分別為T

7、SG GERAN（GSM/ EDGE無線接入網(wǎng)）、TSG RAN（無線接入網(wǎng)）、TSG SA（業(yè)務(wù)與系統(tǒng)）、TSG CT（核心網(wǎng)與終端）。每一個TSG下面又分為多個工作組。如負責(zé)LTE標準化的TSG RAN分為RAN WG1（無線物理層）、RAN WG2（無線層2和層3）、RAN WG3（無線網(wǎng)絡(luò)架構(gòu)和接口）、RAN WG4（射頻性能）和RAN WG5（終端一致性測試）5個工作組。,3GPP 3rd Generation Partne

8、rship Project,,3GPP制定的標準規(guī)范以Release作為版本進行管理，平均一到兩年就會完成一個版本的制定，從建立之初的R99，之后到R4，目前已經(jīng)發(fā)展到R13。3GPP對工作的管理和開展以項目的形式，最常見的形式是Study Item和Work Item。3GPP對標準文本采用分系列的方式進行管理，如常見的WCDMA和TD-SCDMA接入網(wǎng)部分標準在25系列中，核心網(wǎng)部分標準在22、23和24等系列中，LTE標準在36

9、系列中等。,3GPP 3rd Generation Partnership Project,中國通信標準化協(xié)會 (China Communications Standards Association，CCSA)于2002年12月18日在北京正式成立。該協(xié)會是國內(nèi)企、事業(yè)單位自愿聯(lián)合組織起來，經(jīng)業(yè)務(wù)主管部門批準，國家社團登記管理機關(guān)登記，開展通信技術(shù)領(lǐng)域標準化活動的非營利性法人社會團體。CCSA由會員大會、理事會、技術(shù)專家咨詢委員會、

10、技術(shù)管理委員會、若干技術(shù)工作委員會和秘書處組成。其中主要開展技術(shù)工作的技術(shù)工作委員會（簡稱TC）理事長：鄔賀銓副理事長：聞庫、楊澤民、曹淑敏　　名譽理事長：朱高峰、宋直元　　高級顧問：周寶信,中國通信標準化,國際電信聯(lián)盟是聯(lián)合國的一個重要專門機構(gòu)，是聯(lián)合國機構(gòu)中歷史最長的一個國際組織。簡稱國際電聯(lián)、電聯(lián)或ITU。國際電聯(lián)是主管信息通信技術(shù)事務(wù)的聯(lián)合國機構(gòu)，負責(zé)分配和管理全球無線電頻譜與衛(wèi)星軌道資源，制定全球電信標準，向發(fā)展中國

11、家提供電信援助，促進全球電信發(fā)展。作為世界范圍內(nèi)聯(lián)系各國政府和私營部門的紐帶，國際電聯(lián)通過其麾下的無線電通信、標準化和發(fā)展電信展覽活動，而且是信息社會世界高峰會議的主辦機構(gòu)。國際電聯(lián)總部設(shè)于瑞士日內(nèi)瓦，其成員包括193個成員國和700多個部門成員及部門準成員和學(xué)術(shù)成員。每年的5月17日是世界電信日(World Telecommunication Day)。2014年10月23日，趙厚麟當選國際電信聯(lián)盟新一任秘書長，成為國際電信聯(lián)盟

12、150年歷史上首位中國籍秘書長，已于2015年1月1日正式上任，任期四年。,國際電信聯(lián)盟 International Telecommunication Union,ITU是聯(lián)合國的15個專門機構(gòu)之一，但在法律上不是聯(lián)合國附屬機構(gòu)，它的決議和活動不需聯(lián)合國批準，但每年要向聯(lián)合國提出工作報告。ITU的組織結(jié)構(gòu)主要分為電信標準化部門（ITU-T）、無線電通信部門（ITU-R）和電信發(fā)展部門（ITU-D）。ITU每年召開1次理事會，每4年召

13、開1次全權(quán)代表大會、世界電信標準大會和世界電信發(fā)展大會，每2年召開1次世界無線電通信大會。,國際電信聯(lián)盟 International Telecommunication Union,標準程序在國際標準化組織中，提出標準建議稿的立項方式和立項定位大體分為以下五種情況： 1． 提案被采納，作某一重要標準的修訂的一部分，或幾段； 2． 提案被采納，作某一重要標準的更正； 3． 提案被采納，作某一重要標準的修訂的一部分，與其它幾個部分共同組成

14、一個重要國際標準； 4． 提案被采納，作某一重要標準的補充； 5． 提案被采納，作某一個獨立的重要標準，如X.85、X.86。 國際標準的影響非常大，一般一項國際標準從提出文稿到批準為標準至少需要兩年，往后的3-5年需要對它進行不斷的維護和完善。被批準為國際標準需要得到189個國家和600多個工業(yè)組織及眾多廠商的認可。所以國際標準制訂是涉及到重大創(chuàng)新、知識產(chǎn)權(quán)、市場、開發(fā)的綜合能力的體現(xiàn)。,國際電信聯(lián)盟 International T

15、elecommunication Union,縱觀全球，歐洲各國、中國、美國、日本和韓國等都已經(jīng)把5G上升為國家戰(zhàn)略。歐盟在2013年成立METIS項目（Mobile and Wireless Communications Enablers for the 2020 Information Society），后又成立5G-PPP項目。中國2013年2月成立IMT-2020（5G）推進組，發(fā)布《5G愿景與需求白皮書》、《5G概念》、《

16、5G無線技術(shù)構(gòu)架》、《無線網(wǎng)絡(luò)技術(shù)構(gòu)架》白皮書，其中主要觀點在全球取得高度共識。美國尚未提出國家層面的5G研發(fā)計劃或政策，但在5G上的研究依然處于世界前列,全球5G研發(fā)進展,IMT-2020 (5G) promotion association was jointly established by three ministries of China (including MIIT, NDRC and MOST) based

17、on the original IMT-Advanced promotion group in February 2013. The members include the main operators, vendors, universities and research institutes in China. The promotion association is the major platform to promo

18、te 5G technology research in China and to facilitate international communication and cooperation.,IMT-2020(5G)推進組,Expert Group: decide important issues on the research and strategy of PG Requirement WG: study 5G vision

19、and requirements towards year 2020 and beyond Wireless Technology WG: study 5G enabling wireless technologies and 5G system framework Network Technology WG: study 5G network architecture and key technologies Spectrum

20、WG: work on spectrum related topics Standards WGs: interactive with international standard organizations including ITU, 3GPP, IEEE, etc IPR WG: deal with IPR issues and relevant policy.,IMT-2020(5G)推進組,專題目的,1、以5G系統(tǒng)為基本環(huán)

21、境，學(xué)習(xí)未來無線通信新技術(shù)和無線網(wǎng)絡(luò)新構(gòu)架；2、通過IMT-2020推進組，了解移動通信系統(tǒng)新標準的發(fā)展一般歷程；3、就一項最新的無線通信具體技術(shù)或新方向作為一個項目展開深入的學(xué)習(xí)、研究，完成項目的綜述（20分）、項目具體仿真平臺搭建（30分）、最終研究報告（30分）、講座（20分，30分鐘，其中ppt介紹15分鐘，討論15分鐘）,5G Vision and Requirements,5G愿景與需求,1、Vision 愿景,Info

22、rmation a finger away, everything in touch信息隨心至，萬物觸手及,1、Vision,5G will penetrate into every element of future society and create an all-dimensional, user-centered information ecosystem. 5G will provide users with fiber

23、-like access data rate and “zero” latency user experience. 5G will be capable of connecting 100 billion devices. 5G will be able to deliver a consistent experience across a variety of scenarios including the cases of ul

24、tra-high traffic volume density（超高流量密度）, ultra-high connection density（超高鏈接密度）, and ultra-high mobility. 5G will also be able to provide intelligent optimization based on services and users awareness, and will improve e

25、nergy and cost efficiency（能量效率和成本效率） by over a hundred of times.,2、5G drivers 驅(qū)動力,Mobile internet （移動互聯(lián)網(wǎng)）and the Internet of Things (IoT) （物聯(lián)網(wǎng)）are the two main drivers in the future development of mobile communications,

26、and they will provide a broad prospect for the 5G.,3、5G Key Performance Indicators 關(guān)鍵性能指標,4、5G Key Efficiency Indicators 關(guān)鍵效率指標,5、5G Key Capabilities 關(guān)鍵能力,5G systems must dramatically outperform previous generation syste

27、ms. 5G should support: 1、User experienced data rate: 0.1~1 Gbps 2、Connection density: 1 million connections per square kilometer 3、End-to-end latency: millisecond level 4、Traffic volume density: tens of Gbps per squa

28、re kilometer 5、Mobility: higher than 500Km per hour,5G should have 5 to 15 times improvement on spectrum efficiency and more than 100 times improvement on energy and cost efficiency.,6、Typical Scenarios 典型場景,Office:Ten

29、s of Tbps/km2 traffic volume density,Dense Residence:Gbps user experienced data rate,Stadium1 million connections /Km2,Open-air Gathering1 million connections/Km2,SubwaysOver 6 persons/m2 super high density,HighwayM

30、illisecond level end-to-end latency,High-speed TrainHigher than 500 Km/h mobility,Wide-area Coverage100 Mbps user experienced data rate,5G Concept,5G概念,1、Main technical scenarios of 5G,Four typical technical scenarios

31、of 5G are derived from the main application scenarios, service requirements, and key challenges of mobile internet and IoT.seamless wide-area coverage scenariohigh-capacity hot-spot scenariolow-power massive-conne

32、ctions scenariolow latency high-reliability scenario,1、Main technical scenarios of 5G,Seamless wide-area coverage and high-capacity hot-spot are main scenarios for mobile internet towards 2020 and beyond. It should beno

33、ted that they are also the main scenarios of 4G. However, higher performance requirements should be met in 5G era.Seamless wide-area coverage is the basic scenario of mobile communications. In this scenario, the main ob

34、jective is to provide seamless service to end users. The main challenge is to provide more than 100 Mbps user experience data rate anytime and anywhere, even for users moving at high speed or in unsatisfactory wireless e

35、nvironments such as cell edge.High-capacity hot-spot scenario mainly targets local hot-spot areas where ultra-high data rates should be provided to users and ultrahigh volume traffic need to be handled. The main challen

36、ge is to provide 1 Gbps user experienced data rate, tens of Gbps peak data rate, and tens of Tbps/km2 traffic volume density.,1、Main technical scenarios of 5G,Low-power massive-connections scenario mainly focuses on sens

37、oring and data collecting use cases, such as smart city, environmental monitoring, intelligent agriculture, and forest fire prevention. The characteristics of this scenario include small data packets, low power consumpti

38、on, and low cost. In general, those kinds of devices are numerous with a wide geographic distribution. To support these applications, 5G needs to support at least 1 million connections per squared kilometer and 100 billi

39、on connections in total, in an efficient way that allows the terminals to have ultra-low power consumption and ultra-low cost.Low-latency high-reliability scenario mainly focuses on vertical industries such as Internet

40、of Vehicles (IOV) and industrial control. The ms-level end-to-end latency or/and nearly 100% reliability need to be guaranteed in this scenario.,1、Main technical scenarios of 5G,2、5G Key Technologies 關(guān)鍵技術(shù),The technical i

41、nnovation of 5G will come from both wireless and network technologies.In the field of wireless technologies, massive multiple-input multiple-output (MIMO), ultra-dense networking (UDN), novel multiple access, and all-sp

42、ectrum access have already become the focus of global industry. In addition, there are some other potential technologies for 5G, such as FBMC, F-OFDM, full duplex, flexible duplex, D2D, Q-ary LDPC codes, network codes, a

43、nd polar codes.In the field of network technologies, a new network architecture based on software-defined networking (SDN) and network function virtualization (NFV) becomes the prevailing view worldwide.,3、Network Archi

44、tecture 網(wǎng)絡(luò)結(jié)構(gòu),4、5G Concept,5G concept can be defined as “One iconic KPI + A group of key technologies”. The iconic KPI is Gbps user experienced data rate, and the group of key technologies include massive MIMO, ultra-dens

45、e networking, novel multiple access, all-spectrum access, and new network architecture.,5、5G Technology Roadmap 技術(shù)路線,3GPP Release 14 is considered to be the best time to initialize the study items for 5G standards, and t