Home | Reports | Technical Documents | Tech-Blog | One-Shot Gallery | Korea ICT News | Korea Communication Market Data | List of Contributors | Become a Contributor |    
Section 5G 4G LTE C-RAN/Fronthaul Gigabit Internet IPTV/Video Streaming IoT SDN/NFV Wi-Fi KT SK Telecom LG U+ Network Protocol Samsung   Korean Vendors
Real World Private 5G Cases   4 Deployment Models On-Premise Cases 5G Core Control Plane Sharing Cases

5G Core Sharing Cases

Private 5G Deployment   • Private 5G Frequency Allocation Status in Korea  South Korean government's regulations on private 5G and KT's strategy for entering the market
Cases in Korea   Private 5G Operators |   SK Networks Service (SI) Sejong Telecom (Wire-line Carrier) KT MOS (Affiliate of KT) • Newgens (SI) • NAVER Cloud more >>  
    Enterprise DIY |   Korea Hydro & Nuclear Power (Power Plant) Korea Electric Power Corporation (Energy) • Republic of Korea Navy more >>
CHANNELS     HFR Private 5G Solution (my5G)       my5G Solution Components       my5G Key Features        my5G Resources        my5G News          
Core Network Evolution - 5G Service based Arhcitecture
December 11, 2017 | By Karim Rabie @ Saudi Telecom Company
Online viewer:
Comments (0)

We are pleased to share with you all an interesting article contributed by Karim Rabie who is Mobile Core Consultant | Telco Cloud Advisor | OPNFV EUAG Member.


Karim Rabie

Senior PS Core / EPC Consultant at Saudi Telecom Company



All Articles by Karim Rabie

  How to contribute your article to Netmanias.com !  
  List of Contributors  




The new Reference Architecture for 5G Core is getting popular day after day, especially among the telco community. Being a fellow of the same community, I have to admit it, we love the reference architecture! We like to draw blocks and reference points and have unique names for interfaces and then start to understand the Call flows and the protocols specifications. That was actually the typical way that 3GPP has always used to describe and standardize technologies and that’s how we have always used to interpret and understand the technical specifications.


I was really surprised that 5G Service-based Architecture didn’t get such popularity although it resides on the same 3GPP specs and actually on the same page. Simply, The new Service-based Architecture is a promising step toward an API-based architecture for Core Network Control Plane.

5G Service-based architecture can be a coup in

the Telecom standards and Specifications.

S6a? Diameter? S11? GTP-C? RADIUS? All these protocols are subject to be API-based. All these interfaces are candidates to be REST Interfaces and the architecture reference points can be simply replaced by a “message bus” in such logical diagram. 


To follow the progress of 3GPP 5G Standardization, One must understand the concept of stages in 3GPP which is a methodology defined by ITU-T. So below are my interpretation for stages and a quick update on 5G progress.


Stage (1) - Service Description/Requirements


An example of Stage (1) deliverables is 3GPP TS 22.261 - Service Requirements for 5G system and as per the last ETSI Summit, no more requirements! This is closed with the freeze of 3GPP Rel 14 - June 2017.


Stage (2) - Mapping Service Requirements into Network Capabilities & call flows.


These are the most popular specs. For example, 3GPP TS 23.060 for PS Core/GPRS, 3GPP TS 23.401 for LTE/EPC. For 5G, we have the 3GPP TS 23.501 that is regularly updated and still in "Open" state following 3GPP Rel-15 Timeline.


Now we know the architecture from 3GPP TS 23.501 and the main system/call flows from 3GPP TS 23.502.


Stage (3) - Signalling description and Protocols specifications.


These specs are mandatory for a standard commercial deployment. This is where you get the bits and bytes and my experience with vendors is that 6-9 months are needed to map these specifications to commercial software. The challenge in 5G Stage (3) is that it needs to cover the protocols specs and needs to finish their job by Jun 2018 in order to allow a standard Commercial 5G deployment in 2019/2020.


Stage (3) may take a conservative approach for the protocols keeping the old good protocols but even in that case, I expect is that the API-based architecture will be coming definitely in the near future. The other direction will be adopting an API-based architecture from day-1 relying on Rest Interfaces replacing Standard Control Protocols.


Note- I am updating the article with the

update that I got on 18th of October that a

Decision has been taken already by 3GPP CT

Group to go for a RESTful Architecture.

Thanks, Geroge Mayer for the update. Great news!

Is the Telco Community ready for an API-based Architecture?!

Thank you for visiting Netmanias! Please leave your comment if you have a question or suggestion.

[HFR Private 5G: my5G]


Details >>







Subscribe FREE >>

Currently, 55,000+ subscribed to Netmanias.

  • You can get Netmanias Newsletter

  • You can view all netmanias' contents

  • You can download all netmanias'

    contents in pdf file







View All (858)
4.5G (1) 5G (102) AI (8) AR (1) ARP (3) AT&T (1) Akamai (1) Authentication (5) BSS (1) Big Data (2) Billing (1) Blockchain (3) C-RAN/Fronthaul (18) CDN (4) CPRI (4) Carrier Ethernet (3) Charging (1) China (1) China Mobile (2) Cisco (1) Cloud (5) CoMP (6) Connected Car (4) DHCP (5) EDGE (1) Edge Computing (1) Ericsson (2) FTTH (6) GSLB (1) GiGAtopia (2) Gigabit Internet (19) Google (7) Google Global Cache (3) HLS (5) HSDPA (2) HTTP Adaptive Streaming (5) Handover (1) Huawei (1) IEEE 802.1 (1) IP Routing (7) IPTV (21) IoST (3) IoT (56) KT (43) Korea (20) Korea ICT Market (1) Korea ICT Service (13) Korea ICT Vendor (1) LG U+ (18) LSC (1) LTE (78) LTE-A (16) LTE-B (1) LTE-H (2) LTE-M (3) LTE-U (4) LoRa (7) MEC (4) MPLS (2) MPTCP (3) MWC 2015 (8) NB-IoT (6) Netflix (2) Network Protocol (21) Network Slice (1) Network Slicing (4) New Radio (9) Nokia (1) OSPF (2) OTT (3) PCRF (1) Platform (2) Private 5G (11) QoS (3) RCS (4) Railway (1) Roaming (1) SD-WAN (17) SDN/NFV (71) SIM (1) SK Broadband (2) SK Telecom (35) Samsung (5) Security (16) Self-Driving (1) Small Cell (2) Spectrum Sharing (2) Switching (6) TAU (2) UHD (5) VR (2) Video Streaming (12) VoLTE (8) VoWiFi (2) Wi-Fi (31) YouTube (6) blockchain (1) eICIC (1) eMBMS (1) iBeacon (1) security (1) telecoin (1) uCPE (2)
Password confirmation
Please enter your registered comment password.