INetworkLayer2CellularNic

module interface

The INetworkLayer2CellularNic module interface serves as an intermediary between the network layer and the cellular (LTE/NR) protocol stack. It facilitates interactions between the cellular stack and the network layer, enabling the transmission of IP packets through the protocol layers of LTE and NR technologies.

Inheritance diagram

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

Implemented by

Name	Type	Description
Ip2Nic	simple module	Bridges the IP network layer and the cellular protocol stack, handling bidirectional packet flow. Extracts flow information from IP headers and attaches it as control tags for the stack. In base stations, determines the destination user equipment from IP addresses.
Ip2NicD2D	simple module	Device-to-Device (D2D) aware version of Ip2Nic. It overrides the packet analysis and next-hop resolution with the D2D-capable behavior: IP-multicast becomes a D2D_MULTI flow with a group-id assignment, unicast destinations get a D2D peer lookup, and the next hop is routed directly to the peer when the peering is in Direct Mode (DM). Selected by the D2D-capable NICs.

Used in compound modules

Name	Type	Description
LteNicBase	compound module	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.

Parameters

Name	Type	Default value	Description
nodeType	string
isNr	bool

Properties

Name	Value	Description
display	i=block/layer

Source code

//
// The INetworkLayer2CellularNic module interface serves as an intermediary between the network layer
// and the cellular (LTE/NR) protocol stack. It facilitates interactions between the cellular stack and the
// network layer, enabling the transmission of IP packets through the protocol layers of
// LTE and NR technologies.
//
moduleinterface INetworkLayer2CellularNic
{
    parameters:
        string nodeType;
        bool isNr;
        @display("i=block/layer");
    gates:
        // Connection to network layer.
        // These gate names are recognized by the network layer (same as the ones in the INetworkInterface interface)
        input upperLayerIn;
        output upperLayerOut;

        // Connection to the cellular stack
        input stackIn;
        output stackOut;
}

File: src/simu5g/stack/ip2nic/INetworkLayer2CellularNic.ned