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IPv6 Deployment & Challenges in SKT 4G/5G
Hanwoong Lim
Core Engineering Team
Infra Engineering Group
SK Telecom
Contents
1
Contents
2
About SK Telecom
3
South Korea No.1 Mobile Network Operator (30M+ subscribers)
Expanding the new ICT Portfolio
MNO MEDIA IoT / DATA AI Platform
Launched in
Dec 01 2018
Reasons for IPv6 Migration
4
SKT IPv6 adoption before/after
5
SKT IPv6 now on
6
…
[National IPv6 usage by ASN1)] [Global ISPs rank having IPv6 users2)]
1) https://www.internetsociety.org/resources/2018/state-of-ipv6-deployment-2018/
2) https://www.apnic.net/community/ipv6/ipv6-in-your-region/?cc=KR
Contents
7
LTE Network & 464XLAT Architecture
• T-Mobile (US) • Sprint(US)
• Reliance Jio (IN) • Orange (PL)
• SK Telecom(KR) • Telstra(AU)
• Rogers(CA) • EE(UK).
Mobile Operators with 464XLAT
ENB
Backhole
PGWMME
NAT64
(SGI F/W)
Internet
EPS Default Bearer
UE
Attach
SGW
Create session
UE gets IPv6 address
LTE UE IP allocation process
DNS64
DNS64 query
6to4 translateCLAT
464XLAT Process
LTE Network & 464XLAT Architecture challenges
[Site A]
[Site B]
[Site C]
Contents
10
Mobile IPv6 service entity
IPv6
IPv4
IPv6 service entity - ① UE(User Equipment)
IPv6
IPv6
IPv6 service entity - ② Network(Backbone, LTE N/W, IX)
Internal
IPv6
IPv4 IPv6
Authentication Charging
NMS
Policy
&
Control
IMS Mgmt.
LTE EPS
Authentication • user auth. Additional plan
Charging • offline, online charging
Policy&Control • Plan based capacity control
Mgmt. • IPv6 address, IPv6 configuration
IMS • HD-Voice, RCS
NMS • Service statistics and report
IPv6 service entity – ③ Telco Systems
8 kinds of Multi-vendor LTE EPS have been developed
IPv6 service entity – ④ Internet services verification
Contents
16
Wired
(broadband)
Wireless
(LTE)
• IPv4 + IPv6 dual
stack
• Cannot solve IPv4
depletion problem
• IPv6 only
• IPv4 depletion
problem solved
Voice(IPv6) + Data(IPv4) Voice&Data(IPv6)
• IPv4 address request 1/2
reduced
• Not a fundamentally solved
• IPv6 only
• IPv4 depletion problem solved
OO-Mobile SK Telecom
• No coordination
with other player
• Representative
service only
• Customer oriented
& coordination
with other player
• All internet
service providing
with IPv6
SKT IPv6 Differentiation point
Conclusion
Q&A
Thank you
Contact – hanwoong.lim@sk.com

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IPv6 Deployment and Challenges in SKT 4G/5G

  • 1. IPv6 Deployment & Challenges in SKT 4G/5G Hanwoong Lim Core Engineering Team Infra Engineering Group SK Telecom
  • 4. About SK Telecom 3 South Korea No.1 Mobile Network Operator (30M+ subscribers) Expanding the new ICT Portfolio MNO MEDIA IoT / DATA AI Platform Launched in Dec 01 2018
  • 5. Reasons for IPv6 Migration 4
  • 6. SKT IPv6 adoption before/after 5
  • 7. SKT IPv6 now on 6 … [National IPv6 usage by ASN1)] [Global ISPs rank having IPv6 users2)] 1) https://www.internetsociety.org/resources/2018/state-of-ipv6-deployment-2018/ 2) https://www.apnic.net/community/ipv6/ipv6-in-your-region/?cc=KR
  • 9. LTE Network & 464XLAT Architecture • T-Mobile (US) • Sprint(US) • Reliance Jio (IN) • Orange (PL) • SK Telecom(KR) • Telstra(AU) • Rogers(CA) • EE(UK). Mobile Operators with 464XLAT ENB Backhole PGWMME NAT64 (SGI F/W) Internet EPS Default Bearer UE Attach SGW Create session UE gets IPv6 address LTE UE IP allocation process DNS64 DNS64 query 6to4 translateCLAT 464XLAT Process
  • 10. LTE Network & 464XLAT Architecture challenges [Site A] [Site B] [Site C]
  • 12. Mobile IPv6 service entity IPv6 IPv4
  • 13. IPv6 service entity - ① UE(User Equipment) IPv6 IPv6
  • 14. IPv6 service entity - ② Network(Backbone, LTE N/W, IX) Internal IPv6 IPv4 IPv6
  • 15. Authentication Charging NMS Policy & Control IMS Mgmt. LTE EPS Authentication • user auth. Additional plan Charging • offline, online charging Policy&Control • Plan based capacity control Mgmt. • IPv6 address, IPv6 configuration IMS • HD-Voice, RCS NMS • Service statistics and report IPv6 service entity – ③ Telco Systems 8 kinds of Multi-vendor LTE EPS have been developed
  • 16. IPv6 service entity – ④ Internet services verification
  • 18. Wired (broadband) Wireless (LTE) • IPv4 + IPv6 dual stack • Cannot solve IPv4 depletion problem • IPv6 only • IPv4 depletion problem solved Voice(IPv6) + Data(IPv4) Voice&Data(IPv6) • IPv4 address request 1/2 reduced • Not a fundamentally solved • IPv6 only • IPv4 depletion problem solved OO-Mobile SK Telecom • No coordination with other player • Representative service only • Customer oriented & coordination with other player • All internet service providing with IPv6 SKT IPv6 Differentiation point
  • 20. Q&A Thank you Contact – hanwoong.lim@sk.com