Constantine Polychronopoulos, VP 5G and Telco Cloud, Juniper Networks 

Delivering E2E Network Slice Orchestration and SLA in Open RAN

Industry Voices 5G
Constantine Polychronopoulos Headshot
 Slide with a small photo of Constantine Polychronopoulos, VP 5G & Telco Cloud, Juniper Networks in the upper right. The slide text says, “Network Slicing and Orchestration Challenges. On-Demand Orchestration at unprecedented scale (100s – 1000s of edge cloud). Strict SLAs in software-driven, large-scale networks. Software-driven continuous RAN optimization. E2E segmentation and robust security across slices. Extreme reliability (99.9999% uptime) and latency (1 – 10ms). Flexible resource management to enable new business models (Network slice marketplace).”

Open RAN and 5G: Benefits and overcoming key challenges

Network slicing improves operational efficiency, optimization, and reliability for delivery of 5G network services. Here, Juniper’s Constantine Polychronopoulos discusses network slicing and SLAs, and why it’s important for the entire network community to work together to accelerate the adoption of Open RAN.

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You’ll learn

  • The key considerations for implementing SMO/RIC for service providers and enterprises

  • How to deliver E2E slicing and orchestration across RAN, core, and transport domains

  • How service providers and vendors can work together to ensure Open RAN success 

Who is this for?

Network Professionals Business Leaders


Constantine Polychronopoulos Headshot
Constantine Polychronopoulos
VP 5G and Telco Cloud, Juniper Networks  


00:06 good day

00:07 i'm constant police vice president at

00:10 juniper networks responsible for 5g

00:14 products and technology and thank you

00:16 for attending our session on delivering

00:18 end-to-end network slice orchestration

00:20 and sla

00:22 in an oren

00:23 open-run ecosystem

00:26 as we consider operand thankfully operan

00:29 appears to be a one-way avenue but we're

00:32 still at the very early stages of

00:34 adoption

00:35 and therefore there is a lot uh to be

00:37 done by our community to make sure that

00:40 oran proves to be a success

00:43 delivering the promise of 5g

00:45 so key tenants of success obviously

00:48 include

00:50 open ecosystem here we have to work as a

00:52 community to enable portability

00:54 interoperability across all oren

00:57 components both on the net network uh

01:00 uh stack as well as on the

01:03 rig and the x apps are apps that make up

01:06 the oren architecture

01:09 new business models the efficacy of new

01:12 revenue generating

01:14 business models that are enabled by oren

01:17 is important for operators to accelerate

01:20 adoption and again as a community of

01:23 innovators vendors

01:25 customers

01:26 we need to

01:28 demonstrate the ability to offer new

01:31 levels of optimization of spectral

01:33 efficiency

01:35 the ability to

01:37 optimize energy consumption and of

01:40 course the

01:41 capability of enabling new business

01:43 models that generate revenue as well as

01:46 reduce

01:47 costs for operators both on the capex

01:50 side but predominantly on the opex side

01:53 through automation and automation is key

01:56 is key not only because of the new

01:57 complexities that

01:59 are introduced by oren we now have

02:02 essentially the radio intelligent

02:04 component

02:05 uh

02:06 functioning as an operating system of

02:08 the radio enabling the provisioning of

02:11 new applications that address everything

02:13 that i mentioned right spectral

02:14 efficiency energy consumption

02:17 new business models

02:19 uh new optimization techniques including

02:23 some type of optimization

02:25 so being able to address simplicity

02:28 life cycle management operational

02:30 simplicity visibility through

02:33 automation and control are going to be

02:36 key tenants in the success of warren

02:40 if we take a look at where we are today

02:43 with uh essentially monolithic mobile

02:45 networks up until now

02:48 and where we want to uh

02:50 to be uh to deliver the promise of 5g

02:53 um

02:54 where unlike

02:56 monolithic networks that look at all

02:58 devices all use cases all customers

03:02 as the same we need to deliver

03:05 device-specific user-specific

03:07 use-case-specific

03:09 service level agreement and quality of

03:11 service

03:12 full segmentation of and security higher

03:16 valuability in its use case

03:19 through a common infrastructure

03:22 and through the enablement of end-to-end

03:24 network slicing whereby a network slice

03:28 addresses specific use cases with strong

03:30 sla attached

03:32 to its network slice which is

03:34 essentially fully virtualized networking

03:37 including

03:38 the applications that make up the

03:40 network slice

03:41 so let's take a look at

03:44 um the key uh challenges that we face

03:49 in

03:49 not just in the world of warren but

03:52 overall in delivering the end-to-end

03:54 network slice a key

03:56 tenant tenant again

03:58 uh for delivering the promise the full

04:00 promise of 5g

04:02 first of all it's a scale

04:05 we are faced with unprecedented

04:08 requirements on delivering

04:10 scalability across immense

04:12 infrastructure that includes thousands

04:15 of access points potentially thousands

04:17 of edge clouds uh hundreds of regional

04:20 clouds and national clouds as well as uh

04:24 hyper clouds including

04:26 uh the use of public clouds

04:29 a strict sla delivered in an overlay

04:32 fashion in overlay networks right in

04:34 virtual networking uh with quality of

04:37 service guaranteed

04:39 high availability guaranteed and

04:42 everything being software driven

04:44 enabling

04:46 the provisioning of new

04:48 optimization techniques new business

04:50 models on demand

04:52 end-to-end segmentation and security are

04:55 critical especially given that we're

04:57 talking now about the

04:59 notion of multi-tenancy at the level of

05:02 virtual networking whereby

05:06 crossing

05:07 between

05:08 different

05:10 slices

05:11 is a possibility a real possibility

05:14 and we need to guarantee that each slice

05:17 is fully segmented fully secured and in

05:20 some of the critical use cases

05:22 availability can reach the six nines

05:25 some that we have not really demonstrate

05:27 that scale yet in the world of 5g

05:30 and finally of course the promise of

05:33 network slice marketplace whereby you

05:35 can order a slice or you can subscribe

05:38 to an existing slice on demand

05:40 again a new capability in mobile

05:44 networks

05:45 as we move to the full adoption of 5g so

05:48 these are the key

05:50 uh

05:52 obstacles or the key challenges i should

05:54 say many of them have been addressed by

05:57 innovative uh new solutions and let me

06:00 talk about the approach we're taking

06:02 here to address them to a network slice

06:04 from the orchestration point of view

06:06 whereby

06:08 a slice essentially can be as simple as

06:10 the use as a service chain or as complex

06:13 as a full-fledged operator and mvno and

06:16 at the bottom we have the abstraction of

06:18 the infrastructure which includes

06:20 uh the private clouds

06:22 thousands of edge clouds regional clouds

06:25 national data centers as well as the

06:28 hyperscalers the public clouds right so

06:31 as we onboard such complex use cases in

06:34 a highly distributed complex multi-cloud

06:38 multi-domain infrastructure

06:40 the again the issue of simplicity of

06:43 management life cycle management

06:45 provisioning visibility is key to the

06:49 design it's key to the requirement right

06:51 so

06:52 an operator a service provider

06:54 can onboard an nvno

06:56 and then vienno now has the requirement

06:59 of provisioning their own slices right

07:01 so we need to support that

07:03 use case

07:04 in a way that

07:06 even though the uh provisioning again

07:10 anchors at the service provider level

07:13 the management the visibility is fully

07:16 contained within the tenant within the

07:19 mvno which

07:21 introduces new complexities

07:23 to the service management and

07:25 orchestration especially as

07:28 we talk about end to end

07:32 so the tenant has

07:34 seemingly full control of provisioning

07:38 managing

07:39 the life cycle of their slices

07:42 yet the provider needs to at all times

07:45 support the sla attached to that tenant

07:49 and uh

07:51 we support again from the smo point of

07:53 view

07:54 a tenant manager

07:56 uh as well as a service provider manager

08:00 so a service provider can have multiple

08:03 tenants

08:04 operating simultaneously on one shared

08:06 infrastructure

08:10 a key part of the success for delivering

08:13 end-to-end network slides with strong

08:15 sla attached

08:17 is to design the smo around the three

08:21 semantic domains

08:23 and the three semantic domains are the

08:25 accesses the run

08:27 adopting the oren architecture the

08:29 transport and the core

08:32 so

08:33 if we look at the transport it's not

08:35 just the one transport we have transport

08:38 within the oren architecture the mid

08:40 hall for example the black hole

08:42 right so

08:43 these are three semantic domains that

08:46 have multiple incarnations in a highly

08:49 distributed infrastructure

08:51 so the end-to-end service orchestration

08:53 has to account for dynamic onboarding

08:57 provisioning such complex use cases with

09:00 multiple transport domains multiple

09:02 round domains multiple core domains

09:04 potentially across a highly distributed

09:07 multi-cloud environment that's the end

09:09 goal

09:10 and stretching the sla across these

09:14 three semantic domains

09:16 and their

09:17 multiple incarnations in a way that

09:19 consistently delivers the sla

09:22 is one of the largest

09:25 challenges that we face

09:27 so

09:28 at juniper for example

09:31 we have already enabled our transport

09:34 to support end-to-end guaranteed sla on

09:38 mult multiple tenants

09:39 and we use similar technology to enable

09:42 um

09:43 end-to-end network slicing in the mid

09:45 hall

09:47 as well as

09:48 across the core where the key

09:52 functions of the core can be either

09:54 shared or can be individually

09:58 allocated to specific tenants so they

10:00 can be private or shared and delivering

10:04 the sla across

10:05 such disparate

10:07 complex use cases in a consistent way

10:10 is

10:11 a key objective of of the design to our

10:14 following

10:16 uh going back to the orange and the need

10:18 to support the success of oren

10:21 as a community there's no question we

10:23 need to address

10:24 uh the open ecosystem to commit to

10:27 interoperability

10:28 and

10:30 to uh testing platforms that allow us to

10:33 demonstrate interoperability

10:36 uh and from

10:37 that to derive to agree upon on use

10:40 cases that address network efficiencies

10:43 network optimization

10:45 energy efficiency and new use cases that

10:49 drive revenue

10:51 as a community and that will drive the

10:54 necessary requirements that will be

10:56 reflected in the ordinance

10:57 specifications going forward again we

11:00 are well on our way to achieving that

11:02 but more effort needs to be expanded by

11:04 the community to really accelerate

11:07 both the maturity of water and the

11:09 adoption of warren

11:11 that will get us to the point where we

11:14 will have interoperable portable x-ups

11:17 and arabs running on the radio

11:19 intelligent controller that will really

11:22 open the floodgate of new business

11:25 models

11:26 new innovative ways of achieving

11:29 spectral efficiency

11:31 and addressing

11:33 kpis for mission critical use cases

11:40 if we look at uh the approach we're

11:42 taking at juniper again we are committed

11:45 to experience first networking which is

11:47 really the north star of the company

11:50 company-wide we're focusing on

11:52 uh simplicity

11:54 and visibility

11:57 that

11:58 comes through automation

12:00 so that is key in enabling reduction of

12:03 opex right taking the

12:06 complexity down to

12:09 zero thoughts if you you know if you

12:11 wish is the end goal of course it's a

12:14 long way there but we're well on our way

12:16 to delivering that in uh end-to-end

12:18 network slice registration

12:20 uh multi-cloud is very important to us

12:23 and i think it should be very important

12:25 the community because

12:27 operators as well as enterprises because

12:30 we're talking about both private and

12:32 public

12:34 5g

12:35 will

12:36 need to have the flexibility of

12:38 leveraging

12:40 the

12:41 public clouds the simplicity and the

12:45 speed at which we can enable new use

12:47 cases leveraging public clouds at the

12:50 same time

12:51 operators

12:53 will need to have the ability to

12:55 leverage or build out their own private

12:57 clouds right so

12:59 having a

13:01 smo

13:03 that supports

13:04 multi-cloud environments public and

13:06 private clouds and the delivery the

13:09 provisioning of such complex use cases

13:12 through network slicing across multi

13:14 clouds is is a is a key requirement uh

13:17 for the approach we're taking and i

13:18 believe for the approach the community

13:20 needs to take

13:21 intelligent automation

13:24 and optimization again delivered

13:26 primarily through the radio intelligence

13:28 controller

13:30 is the new opportunity that open iran

13:32 brings to the market and multi-tenancy

13:35 is absolutely a key requirement uh

13:40 multi-tenancy at a new level that has

13:42 not been

13:44 realized up until now again

13:46 that addresses regional slices addresses

13:50 uh national slices very complex use

13:53 cases all of them coexisting on one

13:56 shared infrastructure

13:58 and

14:00 that takes us to the multi-access right

14:02 network slicing

14:04 that can support use cases

14:07 that can be mission critical or simply

14:10 enhanced mobile

14:12 broadband

14:14 will need to be supported across

14:15 different access

14:17 media not just 5g but 4g wi-fi wireline

14:21 so these are very important requirements

14:24 in

14:25 delivering

14:26 simplest sim simple

14:29 seamless way of onboarding provisioning

14:32 and managing network slices in an

14:34 end-to-end fashion

14:36 and with that i will conclude the

14:38 presentation and thank you very much for

14:40 attending

14:49 you

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