LteMacBase Class Reference¶

Deletes MAC Buffers

deleteQueues() must be called on handover to delete queues for a given user

Parameters

nodeId

Id of the node whose queues are deleted

Reimplemented in D2dEnbMacBase< LteMacEnb >, and D2dEnbMacBase< NrMacGnb >.

Tear down all MAC/HARQ/connection state for a node after an RLC-detected radio link failure (TS 38.322 5.3.2 / TS 36.322 5.2.1: indicate max retransmissions to upper layers). Marks HARQ reset so any in-flight feedback for the node is dropped this TTI (isHarqReset()), then calls the (virtual) deleteQueues(). Driven by BearerManagement::handleRadioLinkFailure.

Maps a DRB ID to the corresponding Logical Channel ID. Currently a 1:1 mapping.

Referenced by ctrlInfoToMacCid().

Maps a Logical Channel ID to the corresponding DRB ID. Currently a 1:1 mapping.

Extracts a MacCid from FlowControlInfo. Converts DrbId (from PDCP/RLC) to LogicalCid (MAC layer).

References drbIdToLcid().

sendUpperPackets() is used to send packets to upper layer

Parameters

pkt	Packet to send

Grabs NED parameters, initializes gates and the TTI self message

Analyze gate of incoming packet and call proper handler

Statistics recording Deleting the module

Method is overridden to cancel the periodic TTI self-message, afterwards the deleteModule method of cSimpleModule is called.

Main loop of the Mac level, calls the scheduler and every other function every TTI: must be reimplemented by derived classes

sendLowerPackets() is used to send packets to lower layer

Parameters

pkt	Packet to send

createOutgoingConnection() creates MAC queues and buffers for a given CID and registers the outgoing connection if they don't already exist

deleteOutgoingConnection() deletes MAC queues and buffers for a given CID and unregisters the outgoing connection

Parameters

cid	Connection identifier to delete

Exceptions

cRuntimeError

if the connection does not exist

clearOutgoingConnectionBuffers() empties the MAC queues and virtual buffers for a given CID without destroying the connection. Used during D2D mode switch to preserve the connection for potential mode switch back.

createIncomingConnection() registers an incoming connection for a given CID if it doesn't already exist

configureLogicalChannel() records the RLC/logical-channel configuration of a channel (MacCid = remote node + LCID), as pushed by the configuring entity (RRC) at bearer establishment. Upsert: re-establishment re-pushes the same values.

findLogicalChannelConfig() returns the configuration pushed for a channel, or nullptr if the channel has none (e.g. a configured bearer that is not established yet).

References lcConfig_.

getLogicalChannelConfig() returns the configuration pushed for a channel.

Exceptions

cRuntimeError

if the channel has no configuration (a push path was missed)

bufferizePacket() is called every time a packet is received from the upper layer

Referenced by handleUpperMessage().

handleUpperMessage() is called every time a packet is received from the upper layer

References bufferizePacket().

macHandleFeedbackPkt is called every time a feedback pkt arrives on MAC

Upper Layer Handler.

Lower Layer Handler.

Reimplemented in D2dEnbMacBase< LteMacEnb >, and D2dEnbMacBase< NrMacGnb >.

Referenced by D2dEnbMacBase< Base >::fromPhy().

Factory for the RX HARQ buffer created upon first reception from a node. The base implementation supports the DL and UL directions only.

Reimplemented in D2dEnbMacBase< LteMacEnb >, D2dEnbMacBase< NrMacGnb >, D2dUeMacBase< LteMacUe >, and D2dUeMacBase< NrMacUe >.

Records the buffer-overflow statistic for a dropped packet of the given direction.

Reimplemented in D2dUeMacBase< LteMacUe >, and D2dUeMacBase< NrMacUe >.

MAC <– RLC.

MAC --> RLC.

MAC <– PHY.

MAC --> PHY.

TTI self message.

TTI for this node.

MacNodeId.

MacCellId.

Mac Buffers maximum queue size.

Consolidated outgoing connection information (replaces mbuf_, macBuffers_, and connDesc_)

List of pdus finalized for each user on each codeword (one entry per carrier)

Harq Tx Buffers (one entry per carrier)

Harq Rx Buffers (one entry per carrier)

Per-channel RLC/logical-channel configuration pushed by the configuring entity (RRC) at bearer establishment; shared by the outgoing and incoming direction.

Referenced by findLogicalChannelConfig().