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Encoding TTCN type [message #1720352]

Mon, 18 January 2016 06:38

murli sharma

Messages: 85
Registered: November 2015

Member

Hi,

I wanted to know how TTCN data types like the following record can be encoded/decoded?

type record RRC_DATA_IND {
integer cellId,
SS_RB_Identity rB_Id,
LogicChGERAN ch optional,
SapId sapId optional,
SS_CN_DomainIdentity cN_Domain,
START_Value ttcn_start optional,
RRCDataIndType msg
};

The complete script containing this data type is attached.

Thanks
Murli

Attachment: SSNITZ_Testsuite-160118-1142.tgz
(Size: 747.89KB, Downloaded 169 times)

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Re: Encoding TTCN type [message #1720359 is a reply to message #1720352]

Mon, 18 January 2016 08:05

roland gecse

Messages: 20
Registered: December 2015

Junior Member

TITAN encodes/decodes the TTCN-3 abstract syntax in a proprietary way using so called Test Ports. Each Test Ports is a C++ class. Each port of a given port type is an instance of this C++ class. A method of the test port object is invoked every time when a message is being sent on the TTCN-3 port associated with it. Receiving is slightly more complicated.

Test ports are protocol specific. TITAN provides some test ports, you can check if there is one suitable for your purpose. If not, then you can develop your own Test Port. You will find everything you need in the documentation accompanying TITAN, i.e. the doc folder of the distribution. Refer to the API Technical Reference for TITAN TTCN-3 Test Executor. Start with section 2. You will also need to study the data mapping in section 5. You will also find examples attached. The other documents will also provide insight to Test Ports and other useful TITAN features.

Good luck and don't forget to share the outcome of your efforts!

R

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Re: Encoding TTCN type [message #1720360 is a reply to message #1720352]

Mon, 18 January 2016 08:13

Elemer Lelik

Messages: 1120
Registered: January 2015

Senior Member

Hi Murli,

RRC_DATA_IND , RRCD_DATA_REQ etc. are not PDUS (Protocol Data Units) which are sent between two peer layers in different nodes, but ASPs (Abstract Service Primitives) sent between two layers in the same node (in this case, NAS and RRC),
so they are not necessarily encoded; they can be sent as structures between the layers, but this is implementation dependent (nothing forbids encoding them either).
So for the exact answer please check the documentation attached to the test suite.

Best regards

Elemer

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