Table of Contents
3GPP 5G standard schedule after update
About science communication standard 5G stage
Talking: The delay will affect your use 5G phone time?
5G is now accelerating, and in the TSG RAN plenary meeting in Sorrento, Italy, held December 10 to 13, but to promote the standard 5G throw heavy message.
According to foreign media reports MOBILE WORLD LIVE, 3GPP Chairman of ISO Balazs Bertenyi representation, 3GPP originally planned to freeze R15 Late Drop version in December 2018, will be postponed to March 2019, R16 standards will be postponed.
3GPP 5G standard schedule after update
The news also sparked fears of a global slowdown in the construction of 5G.
About science communication standard 5G stage
5G network communication standards into R15, R16 two stages. Where the standard R15 stage is divided into three parts:
- • Early versions ( 'Early' drop): non-independent networking (Non-Standalone, NSA) Specification (Option-3 series), ASN.1 was frozen in March 2018;
- • major version ( 'Main' drop): independent network (Standalone, SA) specification (Option-2 series), ASN.1 was frozen in September 2018;
- • delayed version ( 'Late' drop): other migration Architecture (Option-4, Option-7 and 5G-5G dual-link), ASN.1 will freeze in June 2019.
There are three versions of a Release, never seen it? This is probably because in 2017 accelerated the 3GPP standard-setting speed, the original plan in June 2018 to complete the 5G NR NSA standard advance to the December 2017 completion, in order to meet the needs of some operators starting, so the first stage 5G R15 standard is divided into three versions go step by step.
So, R15 NSA NR, NR SA R15 and R15 late drop in the end what's the difference? The rest of the R15 late drop includes what content?
5G deployment options from which to start.
5G deployment options
When the evolution from 3G to 4G, which we call " the whole evolution ," that whole package radio access network and core network evolution from 3G to 4G.
But in the era 5G, is not the same.
When the 4G 5G evolved radio access network and the core network was opened, and the radio access network and 5G (NR), a core network 5G, 4G 4G core network and radio access network (LTE) with mixing to form a plurality kinds of network evolution path deployment options.
These options include (see below):
- • Option 2: Independent Network (SA) mode, the introduction of 5G core network, base stations are connected only 5G 5G core network.
- • Option 3: Non-independent networking (NSA), the connection to the core network 4G, 4G base stations based, 5G base station supplemented.
- • Option 4: Non-independent networking (NSA) mode, the introduction of 5G core network, the main base station 5G, 4G base stations, supplemented.
- • Option 5: Independent Network (SA) mode, the introduction of 5G core network, but only 5G 4G base stations are connected to the core network.
- • Option 7: Non-independent networking (NSA) mode, the core network to introduce 5G, 4G base stations based, supplemented by 5G base station.
As the table shows that the non-independent network is called LTE and dual NR new radio connection, since the difference in the specific implementation, thus comprises three framework:
- EN-DC (option 3),
- NE-DC (option 4) and
- NGEN-DC (option 7) architecture.
- Representative DC Dual Connectivity, i.e. bis connector;
- E represents E-UTRA, 4G i.e. the radio access network;
- N represents NR, i.e. new radio 5G;
- NG represents the next generation core network, namely 5G core network.
EN-DC architecture
EN-DC refers to the double connector 5G 4G wireless access network and the NR, NE-DC refers to the double connector NR 5G 4G radio access network, the 4G NGEN-DC refers to a radio access network in the core network and 5G the double connector 5G NR.
3GPP completed in December 2017 R15 NR NSA (non-independent network) standard, is Option 3.
3GPP in June 14 to complete the R15 NR SA (independent network) standard, it is Option 2.
As for the rest of Option 4 and Option 7, will be completed in the R15 late drop versions, the original completion date is December 2018, but this will be completed by 3GPP delayed to March 2019.
R15 late drop主要包含的内容是： 选项4 (即NE-DC 构架)与选项7 (即NGEN-DC构架) 两种架构，以及NR-NR双连接（synchronous case）。
NR-NR双连接是什么呢？由于有些运营商计划采用低频段（比如700/800/900MHz频段）来建设5G网络的覆盖层，再用高频段（比如毫米波频段）来补充网络容量，但由于低和高频段的无线传播特性相差太大，共站实现载波聚合技术有些不实际，因此提出了NR-NR双连接技术。
说人话：这次延迟会影响你用5G手机的时间吗？
上面的可能说的有点复杂，简单来说，NSA和SA这两种网络部署架构是全球运营商最有需求、最主流的架构，因此3GPP优先完成了这两种架构的标准化。
不过业内人士对记者表示，Late Drop此次冻结推迟的R15 Late Drop，对应5G核心网＋5G基站为主＋4G基站为辅、5G核心网＋4G基站为主＋5G基站为辅的网络部署方式，这种架构需求并不明朗、使用并不急迫，“因此并不需要3GPP加班加点赶制完，不如把时间用来完善主流架构。”
Balazs Bertenyi也强调，推迟冻结期限“不会以任何方式影响首批5G部署，用于第一次部署的设备和网络的兼容性不受影响。”
对于3GPP为何要推迟5G标准，有说法表示，是为了预留更多的时间确保3GPP各种工作组之间充分协调，以及保证网络与终端、芯片之间更完善的兼容性等。
另MOBILE WORLD LIVE提到，由于3GPP成员在试图完成第15版时面临巨大的工作超负荷，前期因为标准制定加速，RAN工作组挑灯夜战赶进度，经常在晚上10点后还无法休息，实在是太累了。延迟公告得到了“所有各方在会议室中的许多同情”......
运营商已经开始安装基于R15标准的网络设备，但影响并不大，分步骤的5G标准也是为了方便运营商做前期的针对性部署，AT＆T和三星都表示后续可以通过软件更新升级。
3GPP也表示，标准延迟不会对前5G部署产生任何影响，用于第一次部署的设备和网络的兼容性不受影响。另外，RAN＃82也开始为第17版制定计划，预计2019年12月，3GPP将确认功能特性，R17的完成日期将在2019年3月的3GPP全体会议上决定。
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原文链接：https://blog.csdn.net/zhgeliang/article/details/86703003
