EP4049468A1 - Procédé de prise en charge de messagerie dans un réseau de domaine ps - Google Patents

Procédé de prise en charge de messagerie dans un réseau de domaine ps

Info

Publication number
EP4049468A1
EP4049468A1 EP20790357.6A EP20790357A EP4049468A1 EP 4049468 A1 EP4049468 A1 EP 4049468A1 EP 20790357 A EP20790357 A EP 20790357A EP 4049468 A1 EP4049468 A1 EP 4049468A1
Authority
EP
European Patent Office
Prior art keywords
cellular network
message
user equipment
based multimedia
multimedia service
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20790357.6A
Other languages
German (de)
English (en)
Inventor
Volker Breuer
Uwe Dummann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telit Cinterion Deutschland GmbH
Original Assignee
Thales DIS AIS Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thales DIS AIS Deutschland GmbH filed Critical Thales DIS AIS Deutschland GmbH
Publication of EP4049468A1 publication Critical patent/EP4049468A1/fr
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50Service provisioning or reconfiguring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1073Registration or de-registration
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • H04L65/1104Session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12Messaging; Mailboxes; Announcements
    • H04W4/14Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present invention relates to a method for a user equipment.
  • the invention also pertains to a user equipment using said method.
  • the invention further relates to a method for a cellular network. It further pertains to a cellular network using said method.
  • the invention additionally relates to a remote server communicatively coupled to the cellular network.
  • SMS short message service
  • UE user equipment
  • BS base station
  • MMI man- machine-interface
  • this service can be used as reliable backbone for a couple of advanced services, including emergency service, especially carried out via a cellular network towards an application server, but also other services, which require a configuration in either direction without direct interaction of a user but as a remote service.
  • the latter relates in particular to packet based service using a server in or at least communicatively coupled to the cellular network.
  • a server in or at least communicatively coupled to the cellular network.
  • the IP address of such a server is easily provided through a messaging service on request from the user equipment. This is in particular true for services not managed by the cellular network.
  • services not managed by the cellular network Hence in the light of a move to 4G/5G networks, where the circuit switched domain of 2G might not be available anymore, such services are at risk, due to unavailability of the messaging services.
  • Known alternatives like SMS over IP, first require a setup of an IP connection including correct access point (APN configuration) and configuration of an IMS service, and are therefore not immediately available for all user equipments operating in a cellular network.
  • the UE may not have the correct APN available for such connection or the correct configuration for said cellular network may not be available in the UE.
  • SMS via IP the UE needs to connect to the packet-switched (PS) network, and further needs to use the correct APN and related configuration in said network with respect to the packet domain.
  • PS packet-switched
  • 2G/3G cellular network switch which have been the reliable fallback, may have reached their sunset and the LTE or NR networks came up. It may appear that the technology is supported by the UE, but it does not have the correct configuration (e.g. APN available to establish a connection).
  • LTE and NR networks are still in their roll-out process and SMS via IP may be one of the function to be added to those cellular networks, hence also for user equipments in the field being absent for smaller times required configuration update need to be necessary.
  • a cellular network according to claim 13 In a fourth aspect of the invention it is proposed a cellular network according to claim 13.
  • the invention In a fifth aspect the invention relates to a remote server according to claim 15.
  • a method for a user equipment operating in a cellular network configured for supporting at least one IP-based multimedia service, the user equipment comprising a stored set of configuration parameter for the IP based multimedia service, comprising the steps of:
  • the inventive method of this aspect of the invention relates to a user equipment operating in a cellular network.
  • LTE Long Term Evolution
  • NR New Radio
  • the user equipment usually comprises a transceiver, respectively receiver and transceiver circuitry, processing circuitry, volatile and or permanent memory and an antenna. Further the user equipment may be composed of a communication unit comprising the components necessary for communicating with the base station, in particular a cellular modem, and an application part, typically comprising an application processor and some kind of user interface. Preferably a user identification circuit cards is comprised or communicatively coupled with the user equipment for maintaining the access credentials for the respective home or visited cellular network.
  • Such user equipment might also be incorporated in another device or apparatus, like a car entertainment unit, house automation resp. alarm system or an elevator control unit.
  • the user equipment In order to assure the continued communication with cellular networks, where IP based multimedia service is supported, the user equipment needs to be able to submit a message regardless if the IP based multimedia service is well configured or not. For that it is according to the inventive method suggested to send a request message for an IP based multimedia service to the cellular network. This is done by the available configuration of the IP based multimedia service, in particular IMS.
  • Such configurations comprise in particular an URL, APN, the P-CSCF address.
  • IMS specific configurations related to voice and SMS service and a related set of values is defined in 3GPP TS24.167, additional IMS device configuration guidelines and services are released by GSMA for e.g. roaming. Obviously a misconfiguration of such parameter might lead to a fully inoperable message service via the PS domain.
  • the user equipment does not know at that time, in particular when operating in a cellular network where it was not operating before, if the configuration of the IP based multimedia service is working properly or not.
  • the user equipment tries with this request message, if the configuration is at least good enough to reach the IMS server. If it is working, then nothing else is to do. In that case reaching the IMS server may especially mean starting the SIP protocol with the IMS server and requesting respective IMS server i.e. IMS via SMS and if further purposes are also needed performing this request with VoLTE or ViLTE in addition (Voice and Video Services are also available via IMS besides SMS).
  • IMS registration is not acknowledged for SMS or IMS server can’t be reached at all the user equipment needs to take measures. There are several options for the user equipment to figure out that the configuration was not appropriate.
  • the user equipment in the first option figures out by receiving a reject message, that the configuration is not accurate.
  • a reject message that the configuration is not accurate.
  • the request message arrived at the IMS server of the cellular network, but was not accurate or at least not understandable.
  • the UE may not be accepted for services via IMS by the roaming network.
  • the IMS server sends, in particular responds, with a reject message indicating that situation.
  • the IMS server When the IMS server is not reached, it is advantageous to establish a timer. If the timer has expired without a response, then the user equipment is supposed to assume, that no confirmation message is sent, meaning the configuration of the IP based multimedia service is not correct.
  • this is carried out with a retry mechanism, meaning that a predefined number of messages is sent out, and the timer expires in particular repeatedly until the user equipment decides that no confirmation message was received.
  • the user equipment When the user equipment detected, that no confirmation message arrives, then it sends a data message via non-access-stratum messaging to the corresponding network component.
  • Non-access-stratum (NAS) messaging is a way of transporting SMS messages between network, in particular the MME and user equipment. It is initiated by sending an “uplink NAS Transport Message”. Only precondition is to be registered for EPS Services.
  • the corresponding network component is in particular a network component which has access to the server resp. network for IP based multimedia service.
  • the sending of a message NAS messaging comprises a subset of the originally sent message, preferably comprising the most important information to be sent to the remote server.
  • said message contains already an indication related to the wrong configuration related to the IP-based multimedia server. That indication can be part of the NAS message signaling part or in said corresponding payload part, depending on at least one of the method and/or the entity being the recipient of said indication. If it is contained in the message payload part, it is to be evaluated by the receiving SMS server, receiving most important data and indicating that SMS via IMS could not be used because of the configuration.
  • said indication is part of the signaling part it is directly evaluated by a network element i.e. the MME/AMF, being a network component which has connection to the server for IP based multimedia service i.e. the MME and can evaluate PCSCF IP address or whether other configuration was wrongly used to reach the IMS service.
  • a network element i.e. the MME/AMF, being a network component which has connection to the server for IP based multimedia service i.e. the MME and can evaluate PCSCF IP address or whether other configuration was wrongly used to reach the IMS service.
  • the step of sending the data message is carried out in case the reject message comprises a cause indicating a wrong IP-based multimedia service configuration.
  • the reject message further comprises a reject cause.
  • the reject cause can have various values. One of the possible values is a value indicating a wrong IP based multimedia service configuration. Other values can in particular be a general service degradation, temporary unavailability, subscription issues or other problems, that are unrelated to the configuration of the IP Based multimedia service.
  • the method further comprising the step of receiving a response message in response to the step of sending the data message, wherein the response message comprises the cause indicative to wrong configuration.
  • the step of sending the data message comprises submitting an information indicative of the cause relating to wrong IP-based multimedia service configuration, and in response receiving a message comprising configuration information for configuring the IP-based multimedia service, amending the stored set of configuration parameter for IP-based multimedia service based on said received configuration information.
  • This embodiment is intended to overcome the situation of a wrong configuration, and offer a solution, if no confirmation message was received to solve the issue, should the wrong configuration be the reason for the rejected or not even arrived request message to the IMS server.
  • an information indicating the cause relating to wrong IP-based multimedia service configuration is received, be it with the reject message or - following a timeout - after sending an NAS message.
  • a network component coupled to the IMS server including the IMS server itself, a message comprising configuration information for configuring the IP based multimedia service.
  • Such message only comprises the information that need to be used for correcting the configuration, while already correct or uncritical information do not require to be transmitted again. This saves signalling load and speeds up the procedure.
  • the user equipment reconfigures the locally stored configuration with the received data.
  • configuration data are sent as delta update, that means only the wrong configurations are submitted.
  • This embodiment of the invention advantageously assures that a user equipment with a wrong configuration of the IP based multimedia service is capable of carrying out IMS messaging after a few messages via present cellular network communication channels.
  • the method further comprising sending the data message to a messaging slice of the cellular network, wherein the step of sending the data message over the non-access- stratum messaging is carried out only in case of unavailability of the messaging slice.
  • This embodiment refers to the slicing concept which was introduced with the new standard of 5G (New Radio).
  • a slice is a virtualized and independent logical network in a cellular network, dedicated for certain services and/or user equipments.
  • the user equipment typically knows about the availability of the messaging slice.
  • the messaging slice is standardized and therefore accessible by the same way for each user equipment. This is in particular the case for so- called global slices.
  • the availability of a messaging slice may also be indicated by a broadcast, e.g. through System Information Blocks (SIBs).
  • SIBs System Information Blocks
  • the user equipment When the messaging slice is available, the user equipment is supposed to use the messaging slice instead of NAS signalling.
  • the method comprises to send the data message via the messaging slice.
  • a user equipment for operating in a cellular network, the user equipment being configured for using an IP based multimedia service of the cellular network, the user equipment further comprising a storage unit for storing a set of configuration parameter for the IP based multimedia service, wherein the user equipment is configured:
  • This aspect of the invention relates to a user equipment operating in a cellular network, in particular supporting the technology standard of 4G and/or 5G and beyond.
  • the user equipment is equipped with processing circuitry for executing the firmware software that in particular implements the protocol stack for the respective standard compliant exchange with the serving base station of the cellular network.
  • the user equipment is in particular capable of operating on base stations of different technology standards.
  • the user equipment further comprises transmitting and receiving circuitry, preferably a transceiver, and one or more antennas. Furthermore it preferably comprises volatile and permanent memory components for storing the firmware software, configuration information etc.
  • the user equipment is communicatively coupled to a user identification circuit card, having stored access credentials for at least one cellular network. Such credentials, respectively the user identification circuit card is provided by the operator of said cellular network.
  • the second aspect of the invention shares the advantages of the first aspect of the invention.
  • a method for a cellular network being capable of supporting an IP-based multimedia service, comprising the steps of: receiving a data message from a user equipment operating in said cellular network, the data message being submitted via non-access stratum messaging and comprising an information indicative of a wrong configuration for IP-based multimedia services, in response submitting comprising configuration information for configuring the IP-based multimedia service to the user equipment.
  • This aspect of the invention relates to the cellular network where the user equipment according to the second aspect of the invention is operating with.
  • Such cellular network provides a IP based multimedia service, which is preferably carried out by at least one cellular network component by way of a IMS server.
  • IP based multimedia service which is preferably carried out by at least one cellular network component by way of a IMS server.
  • Such server is in particular reachable by IP based routing, that means it provides an IP address or via a name server a URL for getting access to said IMS server, in case the IP address or URL is well configured in the user equipment that is operating in said cellular network.
  • the cellular network supports the user equipment by when it receives a not well configured data message at the IP based multimedia servicing component (in particular the IMS server), that it responds with a message comprising the correct configuration information.
  • the IP based multimedia servicing component in particular the IMS server
  • the cellular network provides NAS messaging capabilities, so that a user equipment of the second aspect of the invention may use this instead of the IP based multimedia service to send its data message to the IMS server.
  • this aspect of the invention encompasses, that the configuration message is sent to the user equipment also in case of a received message via NAS messaging.
  • the third aspect of the invention shares the advantages of the first and second aspect of the invention.
  • the cellular network being configured to support network slicing, and comprises a messaging slice, wherein step of receiving the data message is carried out through said messaging slice.
  • the cellular network further provides a messaging slice.
  • Such slice is part of the 5G slicing concept.
  • Flence in particular when the messaging slice is a global slice, the cellular network gives the user equipment the opportunity to use this slice for sending the data message, or at least for informing about an unsuccessful data transmission via the IP based multimedia service.
  • Such a data message from the user equipment is then forwarded to the appropriate network component, in particular the IMS server or any other remote server, which is configured to respond in particular with an update of the IP based messaging service configuration.
  • the appropriate network component in particular the IMS server or any other remote server, which is configured to respond in particular with an update of the IP based messaging service configuration.
  • cellular network capable of supporting an IP based multimedia service
  • the cellular network being configured to: receive a data message from a user equipment operating in said cellular network, the data message being submitted via non-access stratum messaging and comprising an information indicative of a wrong configuration for IP based multimedia services, in response submit comprising configuration information for configuring the IP- based multimedia service to the user equipment.
  • This aspect relates to the cellular network for serving user equipments. It is preferably configured to support one or more cellular technology standards, in particular 4G and 5G.
  • This comprises base stations as interface to the served user equipments.
  • Such base stations are configured to decode messages from the user equipments according to respective technology standard and provide appropriate responses, send broadcasting messages etc.
  • the cellular network is further configured to server user equipments that have access credentials from other cellular networks, that is they are roaming in this cellular network.
  • the cellular network is capable to access other cellular network from other operators, preferably in other countries, in order to check the integrity of the supplied access credentials.
  • the cellular network comprised components for establishing a IP based multimedia service, in particular one or more IP based multimedia servers, like an IMS server.
  • the cellular network provides a non-access stratum messaging channel, which can be addressed by the user equipments camping in the cellular network.
  • the fourth aspect of the invention shares the advantages of the third aspect of the invention.
  • a remote server communi catively coupled to at least one cellular network, the remote server being configured to support handling of user equipments capable of operating in said at least one cellular network through an IP-based multimedia service wherein the remote server is configured to determine that the communication of at least one user equipment is disturbed, instruct the cellular network to send a non-access stratum message with information relating to the IP based multimedia service.
  • This aspect of the invention relates to a remote server which is communicatively coupled to the cellular network. It is in particular capable of being reached via IP based communication, that is the internet.
  • the remote server provides preferably a memory unit, in particular a data base, where information relating to a plurality of user equipments, including such according to the second aspect of the invention, are stored, in particular an identification like MSISDN, IMSI, IMEI etc.
  • the remote server in particular awaits regularly messages from at least a subset of the user equipments for which identification are stored in its data base.
  • the remote server is configured to send an indication to a cellular network, where the user equipment is currently operating in, should it figure out that the communication is disturbed.
  • Such disturbance in particular encompasses the situation of a wrong configuration for accessing the IP based multimedia service.
  • the remote server is supposed to trigger said cellular network to send a reconfiguration message to the respective user equipment.
  • the remote server itself is aware of the correct configuration setting, i.e. for newly launched networks or updated networks, in such cases it may provide the new configuration as signaling message to the UE.
  • the user equipment gets support from the remote server in case of a wrong configured IMS service. Hence further steps by the user equipment are saved, and the cellular network makes available nonetheless the correct configuration information.
  • this invention advantageously solves the depicted problem and offers a solution where user equipments can continue the usage of IP based multimedia service, in particular messaging even in case of misconfiguration.
  • Fig. 1 represents the situation of a device of the type to which the present invention is applied as an embodiment in conjunction with a cellular network and the involved components;
  • Fig. 2 shows a flowchart representing an exemplifying embodiment of the inventive method
  • Fig. 3 represents another exemplifying situation of a device of the type to which the present invention is applied as an embodiment in conjunction with a remote server.
  • FIG. 1 schematically shows a user equipment UE of the type to which the present invention is applied as an embodiment in conjunction with components of a 5G cellular network CN as it is one exemplifying use case of applying the inventive method.
  • the cellular network comprises a Next Generation Radio Access Network (NG RAN), which is connectively coupled to at least one base station BS. Via the base station BS the user equipment UE is able to operate with the cellular network CN, in particular send and receive data messages. From the NG RAN the regular way of sending a IP based multimedia service message, in particular SMS over IP, via the UPF to the IMS core.
  • the IMS core is basically the IMS Server, the UPF is the user plane function in 5G. This is an IP based path through the cellular network CN, and requires for routing such request an appropriate address of the IMF Core. This is in particular an IP Address or URL for reaching the IMF Core, which needs to be preconfigured in the user equipment UE.
  • SMS-C SMS-Center
  • the cellular network provides another way for message sending, which is through the non-access stratum NAS. For doing so, a message is routed through the NG RAN via AMF and SMSF to the short message service center SMS-C.
  • SMS-C is the same is for SMS over IP. However in some embodiments a legacy SMS-C for NAS messaging is used, while for SMS over IP messaging another SMS-C is in place.
  • the AMF is the Access and Mobility Management Function and the SMSF is the SMS-Function for SMS over NAS.
  • the SMS is used for updating the connectivity functionality for IMS related services, either by the receiving message server being aware of the configuration to be used by the UE in said cellular network. Otherwise it is provided by the UE as part of the NAS signalling to the MME and MME being connected to the P-CSCF i.e. the entry node for the IMS subsystem.
  • the MME can provide said information as NAS signalling in downlink (DL) to the UE. Whilst if coming from the SMS receiving server the new configuration comes as message part of DL NAS signalling to the UE.
  • step S1 the user equipment UE, which is camping on a base station BS of the cellular network CN is sending an IMS message to the cellular network.
  • This sending is carried out considering the locally stored preconfiguration for IMS Services.
  • the UE could be operating in a visited network, or somehow lost the preconfiguration.
  • step S2 it is checked if the user equipment receives a response from the cellular network, in particular the IMS core.
  • step S5 If no response message has arrived, in particular after a predetermined time period, then the message flow branches to step S5, and it is determined that a response timeout has occurred. With step S7 it is then checked if a preconfigured number of retries have been carried out. If this is not the case, then the procedure flow branches back to step S1 , otherwise to S6.
  • the user equip ment UE can assume that the data transmission to the IMS core was unsuccessful. However, it has no indication about the cause of not receiving a response.
  • step S2 Should however the user equipment receive a response in step S2, that does not tell, that all went find. Instead the received response needs to be checked as indicated in step S3. If the message is a confirmation message, then the process flow ends, that means the data transmission of S1 has been successful.
  • step S4 If the message is a reject message, then the flow branches to step S4 where it is figured out, what is the reject cause.
  • a reject cause is preferably transmitted with the reject message from the cellular network, reps the IMS core.
  • step S4 the flow branches from step S4 to an end of the process.
  • step S6 the process flow branches to step S6.
  • this step it is checked of a messaging slice is available. This may be the case in 5G networks, and this further comprises knowledge of the user equipment of this messaging slice. This is in particular the case when the message slice is a global slice. Alternatively the user equipment has knowledge about the slice due to a slice discovery.
  • the messaging slice is available and comprises the preconfiguration to forward the message to the appropriate recipient.
  • the advantage is that said slice is accessible via a simple configuration and if used as global slice should be accessible everywhere.
  • the capabilities of said general slice can be restricted in terms of throughput and service. Hence it could be used for providing most important information and request for configuration for full access.
  • the support of the global slice could be indicated by the cellular network respectively by the UE or when doing initial registration by the UE including the related NSSAI (Network slice selection assistance information) to establish connection to said SMS MESSAGING SLICE.
  • Information received by said slice can include the UE identity which can be used by the AMF to retrieve from the home location register (HLR or HSS, if necessary the home location register of the roaming device) the IP address to which such information shall be routed i.e. the home server of said UE.
  • the user equipment may send a message, in particular the data message through the messaging slice.
  • the message is sent over the Non Access Stratum NAS.
  • step S10 if in response to the message a reconfiguration message is retrieved at the user equipment.
  • This is in particular transmitted when via NAS or messaging slice the IMS Core gets knowledge about the data message, and the configuration of the user equipment for usage of the IMS service. In that case an update of the configuration is made available, and in step S11 finally locally updated in the user equipment UE.
  • FIG. 3 it is shown the configuration of the cellular network CN in conjunction with a remote server RS.
  • the user equipment UE is preferably registered in a database of the remote server RS.
  • the AMF and the packet data network gateway PGW (also known as PDN-GW), which is the anchor between cellular network and other services like the internet.
  • the remote server is accessible from the cellular network in particular via a bidirectional https-based connection.
  • the user equipment is configured to regularly send data to the remote server RS. If no such data transmission is received at the remote server, it then uses the available connection link or an alternative maintenance related connection link to the cellular network, to inform the cellular network about the presently detected unavailability of the user equipment.
  • the cellular network or respective components of it are then instructed to take appropriate steps to instruct the user equipment to operate correctly in the cellular network.
  • Such steps may involve in particular the transmission of a reconfiguration message as indicated to be checked in step S10 of previous figure.
  • the remote server may trigger the cellular network to make the user equipment up and running again, without requiring an active involvement of the user equipment.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé qui est destiné à un équipement utilisateur fonctionnant dans un réseau cellulaire configuré de sorte à prendre en charge au moins un service multimédia IP, l'équipement utilisateur comprenant un ensemble stocké de paramètres de configuration du service multimédia IP, ledit procédé comprenant les étapes consistant : à envoyer un message de demande du service multimédia IP au réseau cellulaire ; en cas de non réception d'un message de confirmation dudit message de demande, à envoyer un message de données par messagerie de strate de non accès au composant de réseau correspondant.
EP20790357.6A 2019-10-25 2020-10-21 Procédé de prise en charge de messagerie dans un réseau de domaine ps Pending EP4049468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19205287.6A EP3813391A1 (fr) 2019-10-25 2019-10-25 Procédé de messagerie de support dans un réseau de domaine ps
PCT/EP2020/079645 WO2021078806A1 (fr) 2019-10-25 2020-10-21 Procédé de prise en charge de messagerie dans un réseau de domaine ps

Publications (1)

Publication Number Publication Date
EP4049468A1 true EP4049468A1 (fr) 2022-08-31

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EP19205287.6A Withdrawn EP3813391A1 (fr) 2019-10-25 2019-10-25 Procédé de messagerie de support dans un réseau de domaine ps
EP20790357.6A Pending EP4049468A1 (fr) 2019-10-25 2020-10-21 Procédé de prise en charge de messagerie dans un réseau de domaine ps

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WO (1) WO2021078806A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946900B1 (ko) * 2007-01-11 2010-03-09 삼성전자주식회사 Ims 재등록 방법 및 이를 위한 시스템
WO2010031442A1 (fr) * 2008-09-19 2010-03-25 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et agencements pour un sous-système multimédia internet (ims)
US9729351B2 (en) * 2009-08-10 2017-08-08 Qualcomm Incorporated Identifying a domain for delivery of message service information

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WO2021078806A1 (fr) 2021-04-29
EP3813391A1 (fr) 2021-04-28

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