This module models an evolved Node B (eNB) of a 4G LTE network. It is a specialized device equipped with a Network Interface Card (NIC) that enables communication with the Ue devices connected to it. It serves as an access point that routes packets between the UEs and the 4G Core Network. Packets arriving from the UEs are tunneled to the appropriate next hop in the core network (e.g., the PDN Gateway, PGW) using the GPRS Tunneling Protocol (GTP). Conversely, packets received from the core network are detunneled and sent to the appropriate destination UE. In addition to the 4G NIC, this compound module includes a configurable number of wired interfaces to connect with routers of the core network or directly to the PgwStandard module, which serves as the IP module to perform forwarding, and the GtpUser module that handles GTP (de)tunneling. The latter utilizes the TrafficFlowFilter module to classify incoming packets and determine the next hop. Furthermore, it features a configurable number of LteX2App modules to facilitate peer-to-peer communications with other eNodeBs within the same LTE network.

The LteNicBase module serves as the foundational building block for LTE networking in Simu5G. It integrates protocols for LTE communication, including PDCP, RLC, MAC, and PHY layers. This base module allows higher-level modules, such as User Equipment (UE) and eNodeB (evolved Node B), to configure and utilize these layers according to their specific requirements.

The LteNicEnb module is a network interface that provides LTE connectivity within an eNodeB. It implements the data and signaling planes of the LTE stack, which includes the PDCP, RLC, MAC, and PHY layers. The parameters and submodules allow customization of the eNodeB's behavior, including whether it supports D2D communication, CoMP (Coordinated MultiPoint), or dual connectivity.

The LteRlc module implements the functionalities of the Radio Link Control (RLC) layer. It provides mechanisms for end-to-end connectivity over the radio interface. It sends and receives RLC Service Data Units (SDUs) to and from the Packet Data Convergence Protocol (PDCP) layer, and sends and receives RLC Protocol Data Units (PDUs) to and from the Medium Access Control (MAC) layer. Depending on the mode, this layer can provide segmentation, concatenation, in-sequence delivery, and retransmission of PDUs. Currently, only the Unacknowledged Mode (UM) has been implemented.

This module represents the container for all X2 applications that an e/gNodeB instantiates to enable X2 communications with its peer e/gNodeBs. Specifically, for each peer, this module contains two submodules:

This module represents the MEC Platform entity within a MECHost, as specified in the ETSI MEC architecture (ETSI GS MEC 003). It encompasses the MEC services made available to MEC applications instantiated within the MEC Host, along with the ServiceRegistry. The type and number of available MEC services can be configured.

This module defines a User Equipment (UE) network interface card that supports both LTE and NR (New Radio) technologies. It extends the LteNicUeD2D module by adding additional submodules and parameters to support NR-specific functionalities.

This module implements a User Equipment (UE) for a 5G LTE network. It extends the Ue module by implementing a NRNicUe as a Network Interface Card (NIC) module. This module can be used to model a device that can connect to either a 4G eNodeB or a 5G gNodeB, or both.

This module implements a simplified model of the EPC PDN Gateway (P-GW) of a 4G LTE network. It serves as the entry point to the core network of an LTE network, thus bridging it to the rest of the Internet. Packets arriving from the Internet are tunneled to the appropriate next hop in the core network (e.g., the eNodeB that will transmit the packet to the destination User Equipment through the radio access network) using the GPRS Tunneling Protocol (GTP). Conversely, packets received from the core network are detunneled and sent to the Internet (e.g., towards a remote server). To accomplish this, it utilizes a GtpUser module that handles GTP (de)tunneling, along with the TrafficFlowFilter module, which classifies incoming packets.

This module represents a host performing the functions of the User Application Lifecycle Management Proxy (UALCMP) defined by the ETSI Multi-access Edge Computing (MEC) specifications. It includes a complete network protocol stack and a UalcmpApp application module that implements the logic of the UALCMP entity. It is typically connected directly to a MEC orchestrator, and forwards to it the creation and deletion requests from the Device App modules of User Equipment. It can be configured to receive packets from a real, external Device App application via the external Ethernet interface submodule.

This module models a User Equipment (UE) in a 4G LTE network. It is a host equipped with an LTE Network Interface Card (NIC), allowing the UE to connect to an eNodeB module via the Radio Access Network (RAN) of the LTE network and communicate with any other host in the system. In addition to a NIC submodule, this compound module includes all the higher layers of the protocol stack, from IP to application modules. It supports a configurable number of UDP and TCP applications. It also features an Ethernet interface, which is utilized in real-time emulation mode to connect the UE to the real network (outside the simulator) via a virtual Ethernet interface.

Implements a 5G Core User Plane Function (UPF) module.

This module represents the Virtualisation Infrastructure in a MEC host. It takes care of forwarding packets coming from the 5G core network to the appropriate MEC applications, applying the processing required by all the necessary network protocol layers. Optionally, it can host "independent" MEC applications, i.e., applications that are statically created at initialization, without going through the normal lifecycle (i.e., through the UALCMP and MEC orchestrator). It provides the external interface to communicate with emulated MEC applications, running outside the simulation environment.