5G研究进展及关键技术

目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术5G系统应用场景5G系统应用场景-IMT-20204低功耗大连接连续广域覆盖低时延高可靠热点高容量5G系统应用场景-ITU移动宽带增强、海量机器通信、超高可靠低时延通信5G系统应用场景-3GPP3GPP协议：38.913●eMBB(enhanced Mobile Broadband)●mMTC(massive Machine Type Communications)●URLLC (Ultra‐Reliable and Low Latency Communications)目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术5G系统技术指标-IMT-20205G系统技术指标5G系统技术指标-3GPP 3GPP协议：38.913●User experienced data rate●Connection density●Network energy efficiency目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术5G网络需要满足以下的需求：●The RAN architecture shall support tight interworking between the new RAT and LTE.✓Considering high performing inter‐RAT mobility and aggregation of data flows via at least dual connectivity between LTE and new RAT.●The RAN architecture shall support connectivity through multiple transmission points, either collocated or non‐collocated.✓The RAN architecture shall enable a separation of control plane signalling and user plane data from different sites.✓The RAN architecture shall support interfaces supporting effective inter‐site scheduling coordination.●Different options and flexibility for splitting the RAN architecture shall be allowed.●The RAN architecture shall allow for deployment flexibility e.g. to host relevant RAN, CN and application functions close together at the edges of the network, when needed, e.g. to enable context aware service delivery, low latency services, etc...●The RAN architecture shall allow for C‐plane/U‐plane separation.●The RAN architecture shall allow deployments using Network Function Virtualization.●The RAN architecture shall allow for the RAN and the CN to evolve independently.●The RAN architecture shall allow for the operation of Network Slicing.●The RAN architecture shall support sharing of the RAN between multiple operators.●The design of the RAN architecture shall allow the deployment of new services rapidly and efficiently.●The design of the RAN architecture shall allow the support of 3GPP defined service classes.●The design of the RAN architecture shall enable lower CAPEX/OPEX with respect to current networks to achieve the same level of services.●RAN‐CN interfaces and RAN internal interfaces (both between new RAT logical nodes/functions and between new RAT and LTE logical nodes/functions) shall be open for multi‐vendor interoperability.●The RAN architecture shall support operator‐controlled sidelink(device‐to‐device) operation, both in coverage and out of coverage目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术3GPP立项：RP‐160671,RAN #71, March, 2016The study aims to develop an NR access technology to meet a broad range of use cases including enhanced mobile broadband, massive MTC, critical MTC, and additional requirements.The new RAT will consider frequency ranges up to 100 GHz.●Target a single technical framework addressing all usage scenarios, requirements and deployment scenarios .●The new RAT shall be inherently forward compatible✓Phase I to be completed in June 2018, Phase II to be completed inDecember 2019✓Phase I specification of the new RAT must be forward compatible (in terms of efficient co‐cell/site/carrier operation) with Phase II specification and beyond, and backward compatibility to LTE is not required✓Phase II specification of the new RAT builds on the foundation of Phase I specification, and meets all the set requirements for the new RAT.✓Smooth future evolution beyond Phase II needs to be ensured tosupport later advanced features and to enable support of servicerequirements identified later than Phase II specification.Initial work should allocate high priority on gaining a common understanding on what is required in terms of radio protocol structure and architecture●Fundamental physical layer signal structure for new RAT✓Waveform based on OFDM, with potential support of non‐orthogonalwaveform and multiple access✓Basic frame structure(s)✓Channel coding scheme(s)●Radio interface protocol architecture and procedures●Radio Access Network architecture, interface protocols and procedures✓Study the feasibility of different options of splitting the architecture intoa “central unit” and a “distributed unit”✓Study and outline the RAN‐CN interface and functional split✓Study and identify the basic structure and operation of realization ofRAN Networks functions (NFs)✓Study and identify specification impacts of enabling the realization ofNetwork Slicing✓Study and identify additional architecture requirements e.g.support forQoS concept, SON, support of sidelink for D2D●Study and identify the technical features necessary to enable the new radio access to meet objective 1 and 2, also including:✓Tight interworking between the new RAT and LTE✓Interworking with non‐3GPP systems✓Operation in licensed bands (paired and unpaired), and licensed assisted operations in unlicensed bands✓Efficient multiplexing of traffic for different services and use cases on the same contiguous block of spectrum✓Stand alone operation in licensed bands●Provide performance evaluation of the technologies identified for the new RAT and analysis of the expected specification work●Identify relevant RF parameters used to be used for sharing and co‐existence studies●Study and identify technical solutions that enable support for wireless relay高频信道模型：TR38.900Channel model for frequency spectrum above 6 GHz5G研究业界进展-友商目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术IMT‐2020关键技术：大规模天线、超密集组网、新型多址、全频谱接入、新型多载波、网络关键技术（网络切片、连接管理和移动性管理等）5G系统容量提升1000倍：频谱效率、带宽、小区数目UDN5G系统研究逻辑功能示意图：应用场景、空口技术、网络架构、网络部署、业务应用目录•5G系统应用场景•5G系统技术指标•5G系统架构需求•5G研究业界进展•5G研究总体方案•5G研究空口关键技术•5G研究网络关键技术•5G研究‐车联网技术•5G研究‐物联网技术29NB‐IOT技术：R13内容5G系统物联网接入技术FD‐MIMO技术：R13内容Massive MIMO技术空口技术研究方案：NB‐IOT技术、SCMA/MUST技术、FD‐MIMO/3D‐MIMO信道模型目录34•5G 系统应用场景•5G 系统技术指标•5G 系统架构需求•5G 研究业界进展•5G 研究总体方案•5G 研究空口关键技术•5G 研究网络关键技术•5G 研究‐车联网技术•5G 研究‐物联网技术5G网络架构示意图‐IMT20205G网络切片示意图‐NGMN虚拟化技术:主要研究C/U分离，网络能力重构和按需组网等技术。