CHAPITRE 5 CONCLUSION
5.3 Améliorations futures
Notre projet n’est pas fixe, d’ailleurs le simulateur implémenté pour l’architecture 23.401 [8] est actuellement entrain d’être complété d’un Graphic User Interface (GUI) en vue d’être distribué avec les SASN vendues par Ericsson. De notre point de vue il serait utile d’améliorer ces simulateurs. Comme décrit précédemment NS-2 est assez limité, nous pourrions donc envisager une ré-implémentation sur NS-3 ou sur un testbed.
Wakikawa et Gundavelli [99] décrivent une méthode permettant d’utiliser des MN ne possédant qu’une pile IPv4 dans un réseau PMIPv6, voire de faire transiter les données entre le MAG et le LMA sur un réseau IPv4. Dans notre étude nous avons pris comme hypothèse que tous le réseaux étaient en IPv6, cependant la transition d’IPv4 à IPv6 sera sans doute très longue. Il serait donc intéressant d’étudier les modifications proposées par Wakikawa et Gundavelli [99] et de les appliquer à nos architectures, de manière à autoriser l’utilisation d’IPv4 sur les UE.
Nous pourrions aussi mener plus loin nos recherches de façon à mettre en lumière les causes de ces différences de performances entre l’architecture 23.401 [8] et les autres.
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ANNEXE A
Diagrammes de séquences de l’architecture 23.401
Les figures suivantes représentent les diagrammes de séquences des principales fonctions de gestion de bearer dans l’architecture 23.401 [8]. Les informations utilisées pour obtenir ces diagrammes sont tirées des documents 23.401 [8], 23.203 [7] et 36.300 [29].
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Completion SASN Ack Notify Bearer Completion Ack IP-CAN Session Modification
Provision Ack
SASN Notify Bearer Completed SASN Ack Notify Bearer Completed Plus assez de bw dans le PGW
ou sur le SGW coté PGW
Update Bearer Request Update Bearer Request
Bearer Modify Request Bearer Modify Response
Update Bearer Response
Update Bearer Response
Provision Ack
SASN Notify Bearer Completed SASN Ack Notify Bearer Completed Plus assez de bw dans le eNodeB
ou sur le SGW coté eNodeB
RRC Connection Reconfiguration RRC Connection Reconfiguration Complete
Bearer Modify Response Direct Transfer
Session Management Response
Update Bearer Response
Update Bearer Response
Provision Ack
SASN Notify Bearer Completed SASN Ack Notify Bearer Completed
UE eNodeB MME SGW PGW PCRF SASN SASN Request Politic SASN Ack Request Politic Policy and Charging Rules Provision
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic Plus assez de bw dans le PGW
ou sur le SGW coté PGW
Update Bearer Request Update Bearer Request
Bearer Modify Request Bearer Modify Response
Update Bearer Response
Update Bearer Response
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic Plus assez de bw dans le eNodeB
ou sur le SGW coté eNodeB
RRC Connection Reconfiguration RRC Connection Reconfiguration Complete
Bearer Modify Response Direct Transfer
Session Management Response
Update Bearer Response
Update Bearer Response
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic Figure A.2 – Complétion de bearer dédié GBR avec UE QoS unaware
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Completion SASN Ack Notify Bearer Completion Ack IP-CAN Session Modification
Update Bearer Request Update Bearer Request
Downlink NAS Transport Direct Transfer
Direct Transfer
Uplink NAS Transport
Update Bearer Response
Update Bearer Response
Provision Ack
SASN Notify Bearer Completed SASN Ack Notify Bearer Completed
UE eNodeB MME SGW PGW PCRF SASN SASN Request Politic SASN Ack Request Politic Policy and Charging Rules Provision
Update Bearer Request Update Bearer Request
Downlink NAS Transport Direct Transfer
Direct Transfer
Uplink NAS Transport
Update Bearer Response
Update Bearer Response
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic
UE eNodeB MME SGW PGW PCRF SASN Attach Request
User Authentication Request User Authentication Response
Authentication Information Request Authentication Information Answer
Update Location Insert Subscriber Data Insert Subscriber Data Ack
Update Location Ack Create Session Request
Create Session Request Create Session Response Create Session Response
Plus assez de bw dans le PGW ou sur le SGW coté PGW Indication of IP-CAN Session Establishment
SASN Info UE Connected SASN Ack Info UE Connected Ack IP-CAN Session Establishment
premier paquet descendant Create Session Response
Create Session Response Initial Context Setup Request
Initial Context Setup Response
Delete Session Request
Delete Session Request
downlink data Indication of IP-CAN Session Termination Delete Session Response
Delete Session Response
SASN Notify Loss of Transmission downlink data SASN Ack Notify Loss of Transmission Ack IP-CAN Session Termination
Plus assez de bw dans le eNodeB ou sur le SGW coté eNodeB
RRC Connection Reconfiguration RRC Connection Reconfiguration Complete
Initial Context Setup Response Direct Transfer
first uplink data Attach Complete
Modify Bearer Request
uplink/downlink data Modify Bearer Response
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Creation SASN Ack Notify Bearer Creation Ack IP-CAN Session Modification
Provision Ack
SASN Notify Bearer Created SASN Ack Notify Bearer Created Plus assez de bw dans le PGW
ou sur le SGW coté PGW
Create Dedicated Bearer Request Create Dedicated Bearer Request
Bearer Setup Request Bearer Setup Response
Create Bearer Response
Create Bearer Response
Provision Ack
SASN Notify Bearer Created SASN Ack Notify Bearer Created Plus assez de bw dans le eNodeB
ou sur le SGW coté eNodeB
RRC Connection Reconfiguration RRC Connection Reconfiguration Complete
Bearer Setup Response
passe par le bearer dédié Direct Transfer
Session Management Response
Create Bearer Response passe par le bearer dédié
Create Bearer Response
Provision Ack
SASN Notify Bearer Created passe par le bearer dédié
SASN Ack Notify Bearer Created Figure A.6 – Création de bearer dédié avec UE QoS aware
UE eNodeB MME SGW PGW PCRF SASN SASN Request Politic SASN Ack Request Politic Policy and Charging Rules Provision
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic Plus assez de bw dans le PGW
ou sur le SGW coté PGW
Create Dedicated Bearer Request Create Dedicated Bearer Request
Bearer Setup Request Bearer Setup Response
Create Bearer Response
Create Bearer Response
Policy and Charging Rules Provision Ack
SASN Response Politic SASN Ack Response Politic Plus assez de bw dans le eNodeB
ou sur le SGW coté eNodeB
RRC Connection Reconfiguration RRC Connection Reconfiguration Complete
Bearer Setup Response
passe par le bearer dédié Direct Transfer
Session Management Response
Create Bearer Response passe par le bearer dédié
Create Bearer Response
Policy and Charging Rules Provision Ack
SASN Response Politic passe par le bearer dédié
SASN Ack Response Politic Figure A.7 – Création de bearer dédié avec UE QoS unaware
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Destruction SASN Ack Notify Bearer Destruction Ack IP-CAN Session Modification
Delete Bearer Request Delete Bearer Request
Deactivate Bearer Request RRC Connection Reconfiguration
RRC Connection Reconfiguration Complete
Deactivate Bearer Response Direct Transfer
Deactivate EPS Bearer Context Accept
Delete Bearer Response
Delete Bearer Response
Provision Ack
SASN Notify Bearer Destructed SASN Ack Notify Bearer Destructed Figure A.8 – Destruction de bearer dédié avec UE QoS aware
UE eNodeB MME SGW PGW PCRF SASN SASN Inform Service Stop Ack SASN Inform Service Stop Policy and Charging Rules Provision
Delete Bearer Request Delete Bearer Request
Deactivate Bearer Request RRC Connection Reconfiguration
RRC Connection Reconfiguration Complete
Deactivate Bearer Response Direct Transfer
Deactivate EPS Bearer Context Accept
Delete Bearer Response
Delete Bearer Response
Policy and Charging Rules Provision Ack
SASN Notify Bearer Destructed SASN Ack Notify Bearer Destructed Figure A.9 – Destruction de bearer dédié avec UE QoS unaware
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Reduction SASN Ack Notify Bearer Reduction Ack IP-CAN Session Modification
Update Bearer Request Update Bearer Request
Bearer Modify Request RRC Connection Reconfiguration
RRC Connection Reconfiguration Complete Bearer Modify Response Direct Transfer
Session Management Response
Update Bearer Response
Update Bearer Response
Provision Ack
SASN Notify Bearer Reduced SASN Ack Notify Bearer Reduced Figure A.10 – Réduction de bearer dédié GBR avec UE QoS aware
UE eNodeB MME SGW PGW PCRF SASN SASN Inform that Service Stop Ack SASN Inform that Service Stop Policy and Charging Rules Provision
Update Bearer Request Update Bearer Request
Bearer Modify Request RRC Connection Reconfiguration
RRC Connection Reconfiguration Complete Bearer Modify Response Direct Transfer
Session Management Response
Update Bearer Response
Update Bearer Response
Policy and Charging Rules Provision Ack
SASN Notify Bearer Reduced SASN Ack Notify Bearer Reduced Figure A.11 – Réduction de bearer dédié GBR avec UE QoS unaware
UE eNodeB MME SGW PGW PCRF SASN Request Bearer Resource Modification
Request Bearer Resource Modification
Bearer Resource Command
Bearer Resource Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Reduction SASN Ack Notify Bearer Reduction Ack IP-CAN Session Modification
Update Bearer Request Update Bearer Request
Downlink NAS Transport Direct Transfer
Direct Transfer
Uplink NAS Transport
Update Bearer Response
Update Bearer Response
Provision Ack
SASN Notify Bearer Reduced SASN Ack Notify Bearer Reduced
UE eNodeB MME SGW PGW PCRF SASN SASN Inform Service Stop Ack SASN Inform Service Stop Policy and Charging Rules Provision
Update Bearer Request Update Bearer Request
Downlink NAS Transport Direct Transfer
Direct Transfer
Uplink NAS Transport
Update Bearer Response
Update Bearer Response
Policy and Charging Rules Provision Ack
SASN Notify Bearer Reduced SASN Ack Notify Bearer Reduced
UE eNodeBSource DestinationeNodeB MME SGW PGW PCRF SASN Handover Required
Handover Request Handover Failure Handover Preparation Failure
Pas assez de bw dans le eNodeB destination ou sur le SGW coté eNodeB destination pour créer le Bearer par default Handover Request Ack
Create Indirect Data Forwarding Tunnel Request Create Indirect Data Forwarding Tunnel Response Handover Command
Handover Command Handover Confirm
Handover Notify
lancement du timer
Delete Bearer Command
Delete Bearer Command
Indication of IP-CAN Session Modification
SASN Notify Bearer Destruction SASN Ack Notify Bearer Destruction Ack IP-CAN Session Modification
Delete Bearer Request Delete Bearer Response
Provision Ack
SASN Notify Bearer Destructed SASN Ack Notify Bearer Destructed Si un bearer à été rejeté
Modify Bearer Request Modify Bearer Response expiration du timer
UE Context Release Command
Delete Indirect Data Forwarding Tunnel Request UE Release Context Complete
Delete Indirect Data Forwarding Tunnel Response