This module interface defines the structure that must be implemented by every MEC Service (see, e.g., LocationService). Common MEC service functionalities are provided by the MecServiceBase class, which includes support for both request-response and subscribe-notification paradigms over the TCP protocol. Furthermore, the MecServiceBase class includes mechanisms to enqueue MEC applications' requests to a MEC service in a FIFO queue, allowing the MEC service to serve them one at a time. This class also calculates the computation time of each request according to an exponential distribution.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Implemented by

Name	Type	Description
LocationService	simple module	This module implements the Location Service API as defined by the ETSI GS MEC 013 specification. It exposes a REST API that allows MEC applications to retrieve location-related information about User Equipment (UE) or a group of UEs. It supports both request-response and subscribe-notification patterns (in the latter case, the MEC application will be notified when a target UE enters a specific circular area.
RNIService	simple module	This module implements a subset of the Radio Network Information Service API defined by the ETSI GS MEC 012 specification. It exposes a REST API that allows MEC applications to retrieve layer-2 measurements related to a User Equipment (UE) or base station.

Parameters

Name	Type	Default value	Description
requestQueueSize	int
subscriptionQueueSize	int
serviceName	string
serviceVersion	string
serviceSerialize	string
transportId	string
transportName	string
transportType	string
transportProtocol	string
catId	string
catName	string
catUri	string
catVersion	string
scopeOfLocality	string
consumedLocalOnly	bool
loadGenerator	bool
betaa	double
numBGApps	int
localAddress	string		local address; may be left empty ("")
localPort	int		localPort number to listen on
requestServiceTime	double
subscriptionServiceTime	double
serverThreadClass	string

Properties

Name	Value	Description
display	i=block/app

Signals

Name	Type	Unit	Description
responseTime
requestQueueSize

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode	Description
requestQueueSizeStat	Request queue size	requestQueueSize	mean, vector
responseTimeStat	Response time of foreground requests	responseTime	mean, vector

Source code

//
// This module interface defines the structure that must be implemented by every
// MEC Service (see, e.g., ~LocationService). Common MEC service functionalities are provided
// by the MecServiceBase class, which includes support for both request-response and
// subscribe-notification paradigms over the TCP protocol.
// Furthermore, the MecServiceBase class includes mechanisms to enqueue MEC applications' requests
// to a MEC service in a FIFO queue, allowing the MEC service to serve them one at a time. This
// class also calculates the computation time of each request according to an exponential
// distribution.
//
moduleinterface IMECService
{
    parameters:
        @display("i=block/app");
        int requestQueueSize;
        int subscriptionQueueSize;

        string serviceName;
        string serviceVersion;
        string serviceSerialize;

        string transportId;
        string transportName;
        string transportType;
        string transportProtocol;

        string catId;
        string catName;
        string catUri;
        string catVersion;

        string scopeOfLocality;
        bool consumedLocalOnly;

        bool loadGenerator;
        double betaa;
        int numBGApps;


        string localAddress; // local address; may be left empty ("")
        int localPort;     // localPort number to listen on

        double requestServiceTime;
        double subscriptionServiceTime @unit(s);
        string serverThreadClass;

        @signal[requestQueueSize];
        @statistic[requestQueueSizeStat](title="Request queue size"; source="requestQueueSize"; record=mean,vector);
        @signal[responseTime];
        @statistic[responseTimeStat](title="Response time of foreground requests"; source="responseTime"; record=mean,vector);
}

File: src/nodes/mec/MECPlatform/MECServices/MECServiceBase/IMECService.ned

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