Integrate OAI-as-a-Service into M-CORD. Wilson Wang Chien-Hao Chen Wei-Yu Chen Ching Tang

Transcription

1 Integrate OAI-as-a-Service into M-CORD Wilson Wang Chien-Hao Chen Wei-Yu Chen Ching Tang 1

2 About Us Wilson Wang (ITRI / NCTU) Chien-Hao Chen (ITRI) Jimmy Wen (ITRI) Wei-Yu Chen (NCTU) Ching Tang (NCTU) Yih-Jye Chiu (NCTU) 2

3 Outline 1. Introduction to Open Air Interface 2. Objective and Demo Scenario 3. Implementation of OAI-as-a-Service M-CORD 4. Future Work 3

4 Introduction to Open Air Interface Composition of OAI Software Defined Radio OAI EPC Features OAI LTE Software Stack 4

5 OAI-OpenAirInterface Raymond Knopp Navid Nikaein 5

6 Composition of OAI LTE Network Architecture UE enb Evolved Packet Core MME HSS S-GW P-GW Internet OAI Architecture Internet SDR OAI UE SDR OAI enb OAI EPC 6

7 SDR-SoftwareDefinedRadio Express MIMO2-Eurecom USRP B210-Ettus Research USRP X310-Ettus Research 7

8 OAI EPC Features MME, HSS, SGW and PGW implementations Compatible with 3GPP R10 UE procedures handling: attach, authentication, service access, radio bearer establishment Configurable access point name, IP range, DNS and E-RAB QoS IPv4 and IPv6 support 8

9 OAI LTE EPC Part Software Stack 9

10 Objective and Demo Scenario Objective Demo Scenario 10

11 Objective Verify service function chain a. Build MCORD-in-a-Box 4.1 for 1st prototype version b. Use OAI EPC as the M-CORD Service c. Divide OAI EPC into MME, HSS, and S/PGW d. Accomplish end-to-end integration test 11

12 DEMO Scenario Two Commercial UE + OAI enb (x86 PC) + OAIaaS M-CORD UE can access the Internet at the same time Performance: UE to S/PGW RTT: 21.9 ms Bandwidth: 4 Mbps (limited by OAI enb) OAI EPC OAI enb MME x310 HSS LAN PCIe X86 SPGW Mobile CORD-in-a-box 12

13 Implementation of OAI-as-a-Service M-CORD Mobile CORD architecture Service dependency Onboard oai service Connection from enodeb to instances Connection from instances to Internet 13

14 Mobile CORD Architecture Virtualized RAN Virtualized EPC Mobile Edge Service XOS Access Link Openstack ONOS Core Link Leaf-spine fabric 14

15 Services Dependency Evolved Packet Core MME HHS enb S/P-GW Internet 15

16 Onboarding Services - Create Synchronizer Service Sychronizer Image publish Docker Registry Local images pull & run build oai service source code corddev oai service synchronizer headnode 16

17 Onboarding Services - Create Service Instance OpenStack components OpenStack synchronizer OAI TOSCA YAML file OAI Service synchronizer XOS headnode OAI Service Instance vhss OAI Service Instance vmme OAI Service Instance vspgw compute node 17

18 Service Synchronizers How to create an openstack images How the synchronizer works More works can be done by synchronizers 18

19 Create an Openstack Image 1. Build an Ubuntu vm with libvirt 2. Install openstack image tools: cloud-init a. Read metadata, put public key for synchronizer uses. 3. Install whatever you needs. 4. virt-sysprep: clean-up all configs. e.g. network, ssh-keys, QEMU Disk utility: qemu-img a. For convert image format & compress image 19

20 Service Synchronization Procedure Synchronizer Wait for dependent instances IP addresses ready Prepare service-related configurations Execute Ansible playbook Create OAI configuration files & data Enable OAI as a systemd service 20

21 Synchronizer: Wait for Dependent Instance HSS step depends on HSS IP MME SPGW step depends on SPGW IP MME depends on HSS & SPGW & MME IP HSS SPGW Only executed when dependent instance is ready 21

22 Make Instances Know Other s IP Render IP variables in playbook MME_PRIVATE_IP MME_PUBLIC_IP HSS_PRIVATE_IP HSS_PUBLIC_IP SPGW_PRIVATE_IP SPGW_PUBLIC_IP OAI_SERVICE_TYPE 22

23 Synchronizer: Prepare Service Configurations HSS model MME model SPGW model SIM data MCC MNC APN data HSS sync step MME sync step SPGW sync step Service-related data will then be injected into Ansible 23

24 Ansible: Create OAI Configurations & Data HSS SPGW hss.conf hss_fd.conf spgw.conf oai.sql MME mme.conf mme_fd.conf set host name & hosts Configuration files are generated from templates 24

25 Deploy Service Based on Service Models HSS model SIM data MME model MCC MNC hss ip HSS sync step hss.conf HSS instance SPGW model APN data spgw ip MME sync step SPGW sync step mme.conf spgw.conf MME instance SPGW instance 25

26 Ansible: Enable OAI as a Systemd Service Ansible generate Systemd definition reference OAI program enable Generate systemd service configuration & enable it 26

27 Connection from enb to Instances fabric enodeb underlay ovs head node vxlan overlay ovs vhss vmme vspgw Compute Node Physical Server 27

28 The Instance Networking In TOSCA yaml, we assign 3 different networks to each instance management oaiservice_network vhss, vmme, vspgw communicate with this network public underlay vspgw outgoing traffic s enode interface B ovs head node fabric vhss overlay ovs vmme vspgw Compute Node Physical Server 28

29 Connection from Instances to Internet eth0 eth1 underlay ovs fabric overlay ovs virbr1 head node Physical Server vhss vmme vspgw Compute Node 29

30 Future work Make Services into CORD-POD Create Corresponding Services for EPC Components 30

31 Migrate OAI Services to CORD-POD High Performance Scalable Physical data plane Bring OAI-MCORD to the real world How to migrate? Build a CORD-POD Add fabric service 31

32 Create Corresponding service for EPC components Make OAI Service as CORD spirit Service Isolation Easy management Network Slicing Service dependency Real automation 32

33 Any Question? Live Science