2020 Vision from Study Group 15

2020 vision

The ITU’s Study Group 15 met in Geneva again this month. Study Group 15 is the group responsible for the optical transport and access networks, including synchronisation. Once again, synchronisation was the biggest single topic, with over 80 contributions from many different companies.

One of the main drivers for the whole network at the moment is 5G. Study Group 15 has been asked to look into the development of the transport network for 5G, including the backhaul and access networks as well as the synchronisation. While 5G isn’t planned to roll out until 2020 and beyond, some operators are planning field trials this year, and need equipment in place ready for those trials.

5G is really stretching the requirements on the network to the extreme. The basestations themselves are going to be split into three parts, the “central unit” (CU), the “distributed unit” (DU) and the radio unit (RU). Huge quantities of data will travel between each of these units, requiring the transport network to support 100Gb/s, with at least 25Gb/s last drops to the RUs. Synchronization between the CU,DU and RU will be extremely tight – some people are saying as tight as 130ns, depending on the radio techniques being deployed. That’s over an order of magnitude tighter than the current 4G LTE network at 1.5us.

The vision is that the 5G network will be used for many applications. First on the list is enhanced mobile broadband connectivity – more data to the handset, but also opening up the possibility of using mobile connectivity to replace existing wireline broadband connections. However, there’s also a lot of buzz around “ultra-reliable and low latency connections” (URLLC), to be used for industrial systems and machine-to-machine communications. Then lastly, there’s the internet of things (IoT). 5G offers a way to connect everything to the internet, and hence to each other. This type of massive connectivity might not require the headline Gb/s to the user equipment, but it does require the ability to connect millions more devices to the network.

With so many different applications making different demands on the network, the concept of network slicing has been developed. Basically this is creating virtual, independent networks out of a single 5G network infrastructure. It’s not totally clear how this will be achieved yet – there are several competing technologies – but it will be interesting to see how this develops over the next months and years. Watch this space to see how the 2020 vision will be brought into focus.

Tim Frost
Strategic Technology Manager, Calnex Solutions.

Recent Blogs

Six New Clocks for…

Jan 17, 2019
1114 More
Ultima Thule

New Year, New…

Jan 07, 2019
461 More

A Better Way to…

Dec 18, 2018
1505 More

Large USA Bank…

Nov 29, 2018
941 More

Low Risk and High…

Nov 06, 2018
755 More

What's Coming in…

Oct 17, 2018
479 More

What’s All This…

Oct 16, 2018
934 More

Latency in a Data…

Oct 03, 2018
2261 More

Testing Sync in…

Aug 14, 2018
651 More

Mobile Backhaul…

Aug 06, 2018
560 More

Related Blogs

banana skin

Will SD-WAN really be the savior?

Mar 13, 2019
The only way to prove it is to get validation on how it will perform against your needs…
866 Read more
Four Boardroom Members

How to Optimise Your IT Network and Spend

Feb 06, 2019
Network emulation can be a key tool to overcome barriers in getting the most out of your…
1732 Read more

Responding to IT Network Issues

Jan 22, 2019
If simple remedial scripts are not enough to fix an IT network issue, a more…
3126 Read more

Archived Blogs

Timing not Telecoms

Nov 08, 2016
397 More

5G Coming Soon

Aug 22, 2016
401 More

What is 1588 PTP?

Aug 04, 2016
495 More

5G on the Horizon

Aug 01, 2016
411 More
442 More

What is a PTP Clock?

Apr 09, 2016
504 More

What is Time Error?

Oct 21, 2015
419 More

LTE-A & VoLTE Rollout

Sep 22, 2015
397 More

LTE Picks Up Speed

Aug 22, 2015
397 More

What is the Time?

Aug 22, 2015
395 More

Mobile and Sync

Aug 22, 2015
388 More

What is SyncE?

Aug 22, 2015
602 More
432 More

Microwave Update

Aug 22, 2015
428 More

Unravelling Standards

Aug 22, 2015
424 More

Partial Progress?

Aug 22, 2015
400 More

Interpreting ITU

Aug 22, 2015
397 More

Confusion Rules!

Aug 22, 2015
395 More

Basestations Need Sync

Aug 22, 2015
411 More

ITSF 2015 Edinburgh

Aug 22, 2015
392 More

India to Follow China?

Aug 07, 2015
393 More
HOW CAN CALNEX HELP YOU FURTHER?

Click your area of interest below for more tutorials and real-world case studies.