L3 RRC/NAS developments

src/ue/rrc/channel.cpp

@@ -162,10 +162,10 @@ void UeRrcTask::receiveRrcMessage(int cellId, ASN_RRC_DL_CCCH_Message *msg)
     switch (c1->present)
     {
     case ASN_RRC_DL_CCCH_MessageType__c1_PR_rrcReject:
-        receiveRrcReject(*c1->choice.rrcReject);
+        receiveRrcReject(cellId, *c1->choice.rrcReject);
         break;
     case ASN_RRC_DL_CCCH_MessageType__c1_PR_rrcSetup:
-        receiveRrcSetup(*c1->choice.rrcSetup);
+        receiveRrcSetup(cellId, *c1->choice.rrcSetup);
         break;
     default:
         break;

src/ue/rrc/connection.cpp

@@ -12,6 +12,10 @@
 #include <ue/nas/task.hpp>
 #include <ue/nts.hpp>
 
+#include <asn/rrc/ASN_RRC_RRCSetup-IEs.h>
+#include <asn/rrc/ASN_RRC_RRCSetup.h>
+#include <asn/rrc/ASN_RRC_RRCSetupComplete-IEs.h>
+#include <asn/rrc/ASN_RRC_RRCSetupComplete.h>
 #include <asn/rrc/ASN_RRC_RRCSetupRequest-IEs.h>
 #include <asn/rrc/ASN_RRC_RRCSetupRequest.h>
 
@@ -55,4 +59,45 @@ void UeRrcTask::startConnectionSetup(OctetString &&nasPdu)
     asn::Free(asn_DEF_ASN_RRC_UL_CCCH_Message, rrcSetupRequest);
 }
 
-} // namespace nr::ue
\ No newline at end of file
+void UeRrcTask::receiveRrcSetup(int cellId, const ASN_RRC_RRCSetup &msg)
+{
+    if (!isActiveCell(cellId))
+        return;
+
+    if (m_lastSetupReq != ERrcLastSetupRequest::SETUP_REQUEST)
+    {
+        // TODO
+        return;
+    }
+
+    auto *pdu = asn::New<ASN_RRC_UL_DCCH_Message>();
+    pdu->message.present = ASN_RRC_UL_DCCH_MessageType_PR_c1;
+    pdu->message.choice.c1 = asn::NewFor(pdu->message.choice.c1);
+    pdu->message.choice.c1->present = ASN_RRC_UL_DCCH_MessageType__c1_PR_rrcSetupComplete;
+
+    auto &setupComplete = pdu->message.choice.c1->choice.rrcSetupComplete = asn::New<ASN_RRC_RRCSetupComplete>();
+    setupComplete->rrc_TransactionIdentifier = msg.rrc_TransactionIdentifier;
+    setupComplete->criticalExtensions.present = ASN_RRC_RRCSetupComplete__criticalExtensions_PR_rrcSetupComplete;
+
+    auto &ies = setupComplete->criticalExtensions.choice.rrcSetupComplete = asn::New<ASN_RRC_RRCSetupComplete_IEs>();
+    ies->selectedPLMN_Identity = 1;
+    asn::SetOctetString(ies->dedicatedNAS_Message, m_initialNasPdu);
+
+    m_initialNasPdu = {};
+    sendRrcMessage(pdu);
+
+    m_logger->info("RRC connection established");
+    switchState(ERrcState::RRC_CONNECTED);
+    m_base->nasTask->push(new NwUeRrcToNas(NwUeRrcToNas::RRC_CONNECTION_SETUP));
+}
+
+void UeRrcTask::receiveRrcReject(int cellId, const ASN_RRC_RRCReject &msg)
+{
+    if (!isActiveCell(cellId))
+        return;
+
+    // TODO
+    m_logger->err("RRC Reject received");
+}
+
+} // namespace nr::ue

src/ue/rrc/handler.cpp

@@ -51,41 +51,6 @@ void UeRrcTask::deliverUplinkNas(OctetString &&nasPdu)
     sendRrcMessage(pdu);
 }
 
-void UeRrcTask::receiveRrcSetup(const ASN_RRC_RRCSetup &msg)
-{
-    if (m_lastSetupReq != ERrcLastSetupRequest::SETUP_REQUEST)
-    {
-        // TODO
-        return;
-    }
-
-    m_state = ERrcState::RRC_CONNECTED;
-
-    auto *pdu = asn::New<ASN_RRC_UL_DCCH_Message>();
-    pdu->message.present = ASN_RRC_UL_DCCH_MessageType_PR_c1;
-    pdu->message.choice.c1 = asn::NewFor(pdu->message.choice.c1);
-    pdu->message.choice.c1->present = ASN_RRC_UL_DCCH_MessageType__c1_PR_rrcSetupComplete;
-    auto &setupComplete = pdu->message.choice.c1->choice.rrcSetupComplete = asn::New<ASN_RRC_RRCSetupComplete>();
-    setupComplete->rrc_TransactionIdentifier = msg.rrc_TransactionIdentifier;
-    setupComplete->criticalExtensions.present = ASN_RRC_RRCSetupComplete__criticalExtensions_PR_rrcSetupComplete;
-    auto &ies = setupComplete->criticalExtensions.choice.rrcSetupComplete = asn::New<ASN_RRC_RRCSetupComplete_IEs>();
-    ies->selectedPLMN_Identity = 1;
-    asn::SetOctetString(ies->dedicatedNAS_Message, m_initialNasPdu);
-    m_initialNasPdu = {};
-
-    m_logger->info("RRC connection established");
-
-    m_base->nasTask->push(new NwUeRrcToNas(NwUeRrcToNas::RRC_CONNECTION_SETUP));
-
-    sendRrcMessage(pdu);
-}
-
-void UeRrcTask::receiveRrcReject(const ASN_RRC_RRCReject &msg)
-{
-    // TODO
-    m_logger->err("RRC Reject received");
-}
-
 void UeRrcTask::receiveDownlinkInformationTransfer(const ASN_RRC_DLInformationTransfer &msg)
 {
     OctetString nasPdu =

src/ue/rrc/state.cpp

@@ -36,4 +36,18 @@ void UeRrcTask::performCycle()
     }
 }
 
+void UeRrcTask::switchState(ERrcState state)
+{
+    ERrcState oldState = m_state;
+    m_state = state;
+
+    m_logger->info("UE switches to state [%s]", ToJson(state).str().c_str());
+    onSwitchState(oldState, state);
+}
+
+void UeRrcTask::onSwitchState(ERrcState oldState, ERrcState newState)
+{
+
+}
+
 } // namespace nr::ue
\ No newline at end of file

src/ue/rrc/task.hpp

@@ -76,13 +76,9 @@ class UeRrcTask : public NtsTask
     /* Handlers */
     void handleDownlinkRrc(int cellId, rrc::RrcChannel channel, const OctetString &pdu);
     void deliverUplinkNas(OctetString &&nasPdu);
-
-    void receiveRrcSetup(const ASN_RRC_RRCSetup &msg);
-    void receiveRrcReject(const ASN_RRC_RRCReject &msg);
     void receiveRrcRelease(const ASN_RRC_RRCRelease &msg);
     void receiveDownlinkInformationTransfer(const ASN_RRC_DLInformationTransfer &msg);
     void receivePaging(const ASN_RRC_Paging &msg);
-
     void handleRadioLinkFailure();
 
     /* RRC Message Transmission and Receive */
@@ -102,6 +98,8 @@ class UeRrcTask : public NtsTask
     /* State Management */
     void triggerCycle();
     void performCycle();
+    void switchState(ERrcState state);
+    void onSwitchState(ERrcState oldState, ERrcState newState);
 
     /* Idle Mode Operations */
     void performCellSelection();
@@ -125,6 +123,8 @@ class UeRrcTask : public NtsTask
 
     /* Connection Control */
     void startConnectionSetup(OctetString &&nasPdu);
+    void receiveRrcSetup(int cellId, const ASN_RRC_RRCSetup &msg);
+    void receiveRrcReject(int cellId, const ASN_RRC_RRCReject &msg);
 };
 
 } // namespace nr::ue

src/ue/types.cpp

@@ -68,6 +68,21 @@ Json ToJson(const EMmState &state)
     }
 }
 
+Json ToJson(const ERrcState &state)
+{
+    switch (state)
+    {
+    case ERrcState::RRC_IDLE:
+        return "RRC-IDLE";
+    case ERrcState::RRC_CONNECTED:
+        return "RRC-CONNECTED";
+    case ERrcState::RRC_INACTIVE:
+        return "RRC-INACTIVE";
+    default:
+        return "?";
+    }
+}
+
 Json ToJson(const EMmSubState &state)
 {
     switch (state)

src/ue/types.hpp

@@ -547,5 +547,6 @@ Json ToJson(const ERegUpdateCause &v);
 Json ToJson(const EPsState &v);
 Json ToJson(const UePduSessionInfo &v);
 Json ToJson(const EServiceReqCause &v);
+Json ToJson(const ERrcState &v);
 
 } // namespace nr::ue