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Copyright 2019 AT&T Intellectual Property *

Copyright 2019 Nokia *

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Licensed under the Apache License, Version 2.0 (the "License"); *

you may not use this file except in compliance with the License. *

You may obtain a copy of the License at *

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http://www.apache.org/licenses/LICENSE-2.0 *

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Unless required by applicable law or agreed to in writing, software *

distributed under the License is distributed on an "AS IS" BASIS, *

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *

See the License for the specific language governing permissions and *

limitations under the License. *

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INSTALLATION (tested on Ubuntu 16.04)

1. Install dependencies $ sudo apt-get update $ sudo apt-get install -y build-essential git cmake libsctp-dev lksctp-tools autoconf automake libtool bison flex libboost-all-dev $ sudo apt-get clean

2. SET ENVIRONMENT VARIABLE Add this line to ~/.bashrc export E2SIM_DIR=

3. Build the official e2sim $ ./build_e2sim

USAGE

$ $E2SIM_DIR/build/e2sim [SERVER IP] [PORT]

By default, SERVER IP = 127.0.0.1, PORT = 36421

DOCKER

Note: The commands in this section must be run from $E2SIM_DIR

• Build docker image $ sudo docker build -f docker/Dockerfile -t [DOCKER_IMAGE]:[TAG] .

• Example how to run docker container $ sudo docker run --rm --net host -it [DOCKER_IMAGE]:[TAG] sh -c "./build/e2sim [SERVER IP] [PORT]"

SUPPORTED MESSAGE FLOWS

• RIC INDICATION (RAN -> RIC) version 1.3.0 September 13, 2019 SgNBAdditionRequest

• RIC SUBSCRIPTION REQUEST (RIC -> RAN) version 1.2.0 May 24, 2019

• RIC SUBSCRIPTION RESPONSE (RAN -> RIC)

• RIC SUBSCRIPTION FAILURE (RAN -> RIC)

• ENDC X2 SETUP REQUEST (RIC -> RAN)

• ENDC X2 SETUP RESPONSE (RAN -> RIC)

• X2 SETUP REQUEST (RIC -> RAN)

• X2 SETUP RESPONSE (RAN -> RIC)

GENERATING ASN1C CODES FOR E2AP, E2SM, X2AP

1. Install asn1c compiler ./tools/install_asn1c

2. Generate asn1c codes using e2ap, e2sm and x2ap specs Download the following files into tools/asn_defs

• e2ap-v031.asn
• e2sm-gNB-X2-release-1-v041.asn
• x2ap-no-desc-15-04.asn

Change logs:

03/12/2019: currently supports sending and receiving X2 SETUP messages 05/21/2019: add support for ENDC X2 SETUP
no longer use asn1c all X2AP and E2AP messages are encapsulated into E2AP-PDU 05/24/2019: add support for RIC SUBSCRIPTION REQUEST, RESPONSE, and FAILURE