This directory contains the necessary scripts and Makefiles to generate all the LTE configuration data structures based on the ASN.1 RRC source code from the 36.331 RRC specifications. These structures are used by MAC and PHY for configuration purposes. It contains the following files README.txt : This file Makefile.inc : Makefile to be included by OpenAir compilation scripts for LTE Data structures asn1c : Directory to place asn1c package asn1c/ASN1_files/36331-860.txt : Text file containing 36.331-860 specifications used to generate ASN1 source asn1c/ASN1_files/extract_asn1_from_spec.pl : Pearl script to extract ASN.1 source from 36311-860.txt asn1c/ASN1_files/EUTRA-RRC-Definitions.asn : First ASN.1 source (generated from above .txt file) asn1c/ASN1_files/EUTRA-InterNodeDefinitions.asn .asn : Second ASN.1 source (generated from above .txt file) asn1c/ASN1_files/EUTRA-UE-Variables.asn : Third ASN.1 source (generated from above .txt file) Instructions to build data structures from ASN1 sources The three files have already been built using the extract_asn1_from_spec.pl Pearl script. This should be used again if a newer version of the RRC spec is used to synthesize the data structures and encoding/decoding routines. To do this: 1. use Microsoft WORD to generate a text version of the 3GPP 36.331 document 2. run the script on the text file to generate the three files. Now download the asn1c utility (version 0.9.21) from http://lionet.info/asn1c/blog/ or via svn from sourceforge (version 0.9.22) svn co https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk asn1c and put it in the asn1c directory (you should have a second asn1c directory now). Compile it and install it locally (or make sure your $PATH can find the asn1c executable) according to the instructions given (see INSTALL file) by the author. We have validated that 0.9.22 works on Linux and Cygwin. To generate the data structures do the following from the current directory asn1c -gen-PER -fcompound-names -fnative-types -fskeletons-copy ./asn1c/ASN1_files/EUTRA-RRC-Definitions.asn Note this only uses one of the three files from 36.331 (the core of the RRC). After this step you should have many .c and .h files and one new Makefile, the latter of which is not used. If you want to compile the ASN1 sources as a kernel module you need to apply the patch asn1_patch patch -p1 < asn1_patch