Update README.md

README.md

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-
-                             OPENAIR-CN-5G
- An implementation of the 5G Core network by the OpenAirInterface community.
-
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-
-OPENAIR-CN-5G is an implementation of the 3GPP specifications for the 5G Core Network.
-At the moment, it contains the following network elements:
-
-* Access and Mobility Management Function (**AMF**)
-* Session Management Function (**SMF**)
-* User Plane Function (**UPF**)
-
-Each has its own repository: this repository (`oai-cn5g-amf`) is meant for AMF.
-
-# Licence info
-
-It is distributed under `OAI Public License V1.1`.
-See [OAI Website for more details](https://www.openairinterface.org/?page_id=698).
-
-The text for `OAI Public License V1.1` is also available under [LICENSE](LICENSE)
-file at the root of this repository.
-
-# Where to start
-
-The Openair-CN-5G AMF code is written, executed, and tested on UBUNTU server bionic version.
-Other Linux distributions support will be added later on.
-
-More details on the supported feature set is available on this [page](docs/FEATURE_SET.md).
-
-# Collaborative work
-
-This source code is managed through a GITLAB server, a collaborative development platform:
-
-*  URL: [https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf](https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf).
-
-Process is explained in [CONTRIBUTING](CONTRIBUTING.md) file.
-
-# Contribution requests
-
-In a general way, anybody who is willing can contribute on any part of the
-code in any network component.
-
-Contributions can be simple bugfixes, advices and remarks on the design,
-architecture, coding/implementation.
-
-# Release Notes
-
-They are available on the [CHANGELOG](CHANGELOG.md) file.
+# OpenXG-AMF
+
+
+
+OpenXG-AMF Arch
+
+├── build:         Build directory, contains targets and object files generated by compilation of network functions. 
+    ├── log:       Directory containing build log files.
+    ├── scripts:   Directory containing scripts for building network functions
+    └── smf:       Directory containing CMakefile.txt and object files generated by compilation of AMF network function. 
+├── etc:           Directory containing the configuration file to be deployed for AMF.
+└── src:           Source files of AMF.
+    ├── amf-app:   AMF Procedures handling logic. 
+    ├── common:    Common definitions for 3GPP specifications.
+    ├── contexts:  communication contexts used in the AMF. 
+    ├── itti:      Inter task interface 
+    ├── nas:       NAS protocol implememtation
+    ├── ngap:      NGAP protocol implememtation
+    ├── oai_amf:   AMF main directory, contains the "main" CMakeLists.txt file.
+    ├── sbi:       AMF service endpoints and curl http client. 
+    ├── sctp:      Build SCTP server.
+    ├── secu_algorithms:   algorithms for 5G-AKA authentication procedures.
+    ├── test:      Minimal implementation for AMF, UDM network functions for testing purpose.
+    └── utils:     Common utilities.  .
+    
+## Download source code from Gitlab
+git clone http://git.opensource5g.org/openxg/amf.git
+cd amf/
+git checkout master
+
+## install dependencies
+cd /amf/build/scripts
+./build_amf -I -f
+## build AMF
+./build_amf -c -V -b Debug -j
+## launch AMF
+sudo amf -c etc/amf.conf -o
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