EP3791626A1 - Maintien de sélection de système de réseau radioélectrique - Google Patents

Maintien de sélection de système de réseau radioélectrique

Info

Publication number
EP3791626A1
EP3791626A1 EP18731892.8A EP18731892A EP3791626A1 EP 3791626 A1 EP3791626 A1 EP 3791626A1 EP 18731892 A EP18731892 A EP 18731892A EP 3791626 A1 EP3791626 A1 EP 3791626A1
Authority
EP
European Patent Office
Prior art keywords
network entity
radio
radio access
user equipment
network system
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
EP18731892.8A
Other languages
German (de)
English (en)
Inventor
Malgorzata Tomala
Gyorgy Wolfner
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.)
Nokia Technologies Oy
Original Assignee
Nokia Technologies Oy
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 Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of EP3791626A1 publication Critical patent/EP3791626A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions

Definitions

  • the exemplary and non-limiting embodiments relate generally to radio communication and, more particularly, to maintaining a radio network system selection.
  • a 4G radio network system may have an evolved packet core (EPC) as a core network element.
  • EPC evolved packet core
  • a 5G radio network system may have a 5G network core (5GCN) as a core network element.
  • an example method comprises receiving a first signal at a first core network entity of a first radio network system that a user equipment, coupled to a first radio access network entity of the first radio network system, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the first signal by the first core network entity, transmitting a second signal from the first core network entity to the first radio access network entity indicating that the user equipment has disabled the capability in regard to the second radio network system.
  • an example method comprises receiving a signal at a first radio access network entity from a first core network entity of a first radio network system, where the signal indicates that a user equipment, coupled to the first radio access network entity, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the signal from the first core network entity, the first radio access network entity avoiding handover of the user equipment to a second radio access network entity of the different second radio network system.
  • an example method comprises receiving a request for a handover by a first radio access network entity regarding a user equipment coupled to the first radio access network entity, where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and the first radio access network entity preventing the handover of the user equipment to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system.
  • an example method comprises receiving a request by a second radio access network entity for a handover of a user equipment coupled to a first radio access network entity, where the first and second radio access network entities are coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and receiving a signal by the second radio access network entity from at least one of the first radio access network entity or the first core network entity indicating that the second radio access network entity should not handover the user equipment to a radio access network entity of the second radio network system.
  • FIG. 1 is a diagram illustrating two different types of radio network systems which a user equipment is operable with;
  • Fig. 2 is a diagram illustrating some components of the user equipment and a first one of the radio network systems shown in Fig. 1;
  • Fig. 3 is a diagram illustrating some components of the user equipment and a second one of the radio network systems shown in Fig. 1;
  • Fig. 4 is a diagram illustrating some steps in an example method
  • FIG. 5 is a diagram illustrating an example method
  • FIG. 6 is a diagram illustrating an example method
  • Fig. 7 is a diagram illustrating an example method
  • Fig. 8 is a diagram illustrating an example method.
  • Fig. 1 illustrates a user equipment (UE) 110 shown connected to a first radio network system 100.
  • the UE 110 is also configured to be able to connect to a different second radio network system 200.
  • the first radio network system 100 is a 4G LTE radio network system
  • the second radio network system 200 is a 5G radio network system.
  • features as described herein may be used with other different types of radio network systems,
  • the first radio network system 100 includes one or more first core network entities 190 and one or more radio access network (RAN) entities 170.
  • the first core network entity 190 is an evolved packet core ( EPC) and the RAN entities 170 are base stations comprising an eNB.
  • the UE 110 is shown connected to one of the eNB 170 by a wireless radio link or channel 111.
  • the second radio network system 200 includes one or more second core network entities 290 and one or more radio access network (RAN) entities 270.
  • the second core network entity 290 is a 5G core network (5GCN) and the RAN entities 270 are base stations comprising a gNB.
  • the UE 110 is configured to be able to connect to the gNBs 270 as indicated by the wireless radio link or channel 211.
  • the UE 110 may optionally use the first radio network system 100 or the second radio network system 200.
  • Fig. 2 this figure shows a block diagram of one possible and non-limiting exemplary system in which the exemplary embodiments may be practiced.
  • the user equipment (UE) 110 is in wireless communication with the first radio network system 100.
  • the UE is a wireless, typically mobile, device that can access the wireless network.
  • the UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected through one or more buses 127.
  • Each of the one or more transceivers 130 includes a receiver (Rx) 132 and a transmitter (Tx) 133.
  • the one or more buses 127 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like.
  • the one or more transceivers 130 are connected to one or more antennas 128.
  • the one or more memories 125 include computer program code 123.
  • the UE 110 includes a restriction module 140, comprising one of or both parts 140-1 and/or 140-2, which may be implemented in a number of ways.
  • the restriction module 140 may be implemented in hardware as restriction module 140-1, such as being implemented as part of the one or more processors 120.
  • the restriction module 140-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array.
  • restriction module 140 may be- implemented as restriction module 140-2, which is implemented as computer program code 123 and is executed by the one or more processors 120.
  • the one or more memories 125 and the computer program code 123 may be configured to, with the one or more processors 120, cause the user equipment 110 to perform one or more of the operations as described herein.
  • the UE 110 communicates with eNB 170 via the wireless link 111.
  • the eNB 170 is a base station that provides access by wireless devices . such as the UE 110 to the first radio network system 100.
  • the eNB 170 includes one or more processors -152, one or more memories 155, one or more network interfaces (N/W I/F(s) ⁇ 161, and one or more transceivers 160 interconnected through one or more buses 157.
  • Each of the one or more transceivers 160 includes a receiver (Rx) 162 and a transmitter (Tx) 163.
  • the one or more transceivers 160 are connected to one or more antennas 158.
  • the one or more memories 155 include computer program code 153.
  • the eNB 170 includes a configuration module, comprising one of dr both parts 150-1 and/or 150-2, which may be implemented in a number of ways.
  • the configuration module may be implemented in hardware as configuration module 150-1, such as being implemented as part of the one or more processors 152.
  • the configuration module 150-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array.
  • the configuration module may be implemented as configuration module 150-2, which is implemented as computer program code 153 and is executed by the one or more processors 152.
  • the one or more memories 155 and the computer program code 153 are configured to, with the one or more processors 152, cause the eNB 170 to perform one or more of the operations as described herein.
  • the one or more network interfaces 161 communicate over a network such as . via the links 176 and 131.
  • Two or more eNBs 170 and/or gNBs 270 communicate using, for example, link 176.
  • the link 176 may be wired or wireless or both and may implement, for example, an X2 interface.
  • the one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on. a motherboard or integrated circuit, fiber optics or other optical communication equipment, wireless channels, and the like.
  • the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195, with the other elements of the eNB 170 being physically in a different locationoh from the RRH, and the one or more buses 157 could be implemented in part as fiber optic cable to connect the other elements of the eNB 170 to the RRH 195.
  • RRH remote radio head
  • each cell can correspond to a single carrier and an eNB may use multiple carriers. So if there are three 120 degree cells per carrier and two carriers, then the eNB has a total of 6 cells.
  • the first radio network system 100 may include one or more core network elements or network control elements (NCE) 190 that may include MME (Mobility Management Entity) and/or SGW (Serving Gateway) functionality, and which provides connectivity with a further network, such as a telephone network and/or a data communications network (for example, the Internet) .
  • the eNB 170 is coupled via a link 131 to the NCE 190.
  • the link 131 may be implemented as, for example, an SI interface.
  • the NCE 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N/W l/F(s)) 180, interconnected through one or more buses 185,
  • the one or more memories 171 include computer program code 173.
  • the one or more memories 171 and the computer program code 173 are configured to, with the one or more processors 175, cause the NCE 190 to perform one or more operations.
  • NCE Network Control Function
  • SGW Session Management Function
  • PCF Policy Control Function
  • AF Application Function
  • AUSF Authentication Server Function
  • UPF User Plane Function
  • UDM User Data Management
  • NFs may be a virtualized function instantiated on an appropriate platform, such as a cloud infrastructure.
  • certain protocols such as non real-time protocols for example
  • CUs centralized units
  • DUs distributed units
  • the various NFs may be split between CUs and DUs.
  • a CU, underlying DUs, and RRHs may be considered as forming a logical base station (which may be represented by eNB 170 in Fig. 2 for example) .
  • the first radio network system 100 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization involves platform virtualization, often combined with resource virtualization.
  • Network virtualization is categorized as either external, combining many networks, or parts of networks, into a virtual unit, or internal, providing network-like functionality to software containers on a single system. Note that the virtualized entities that result from the network virtualization are still implemented, at some level, using hardware such as processors 152 or 175 and memories 155 and 171, and also such virtualized entities create technical effects.
  • the computer readable memories 125, . 155, and 171 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the computer readable memories 125, 155, and 171 may be means for performing storage functions.
  • the processors 120, 152, and 175 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi core processor architecture , as non-limiting examples.
  • the processors 120, 152, and 175 may be means for performing functions, such as controlling the UE 110, eNB 170, and other functions as described herein.
  • the various example embodiments of the user equipment 110 can include, but are not limited to, cellular telephones such as smart phones, tablets, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, tablets with wireless communication capabilities, as well as portable units or terminals that incorporate combinations off such functions .
  • PDAs personal digital assistants
  • portable computers having wireless communication capabilities
  • image capture devices such as digital cameras having wireless communication capabilities
  • gaming devices having wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • Internet appliances permitting wireless Internet access and browsing, tablets with wireless communication capabilities, as well as portable units or terminals that incorporate combinations off such functions .
  • the RAN entity in this example is a gNB 270 provided as a base station that provides access by wireless devices such as the UE 110 to the second radio network system 200.
  • the gNB 270 includes one or more processors 252, one or more memories 255, one or more network interfaces ⁇ N/W I/F(s)) 261, and one or more transceivers 260 interconnected through one or more buses 257.
  • Each of the one or more transceivers 260 includes a receiver (Rx) 262 and a transmitter (Tx) 263.
  • the one or more transceivers 260 are connected to one or more antennas 258.
  • the one or more memories 255 include computer program code 253.
  • the gNB 270 includes a configuration module, comprising one of or both parts 250-1 and/or 250-2, which may be implemented in a number of ways.
  • the configuration module may be implemented in hardware as configuration module 250-1, such as being implemented as part of the one or more processors 252.
  • the configuration module 250-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array.
  • the configuration module may be implemented as configuration module 250-2, which is implemented as computer program code 253 and is executed by the one or more processors 252.
  • the one or more memories 255 and the computer program code 253 are configured to, with the one or more processors 252, cause the gNB 270 to perform one or more of the operations as described herein.
  • the one or more network interfaces 261 communicate over a network such as via the links 176 and 231.
  • Two or more eNBs 170 and/or gNBs 270 communicate using, for example, link 176.
  • the link 176 may be wired or wireless or both and may implement, for example, an X2 interface.
  • the one or more buses 257 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, wireless channels, and the like.
  • the one or more transceivers 260 may be implemented as a remote radio head (RRH) 295, with the other elements of the gNB 270 being physically in a different location from the RRH, and the one or more buses 257 could be implemented in part as fiber optic cable to connect the other elements of the gNB 270 to the RRH 295.
  • RRH remote radio head
  • each cell can correspond to a single carrier and an gNB may use multiple carriers. So if there are three 120 degree cells per carrier and two carriers, then the gNB has a total of 6 cells.
  • the second radio network system 200 may include one or more core network elements or network control elements 290 that may include Access and Mobility Function (AMF) , MME (Mobility Management Entity ⁇ and/or SGW (Serving Gateway) functionality, and which provides connectivity with a further network, such as a telephone network and/or a data communications network (for example, the Internet) .
  • the gNB 270 is coupled via a link 231 to the core network element 290.
  • the link 231 may be implemented as, for example, an Si interface.
  • the core network element 290 includes one or more processors 275, one or more memories 271, and one or more network interfaces (N/W I/F ( s ) ) 280, interconnected through one or more buses 285.
  • the one or more memories 271 include computer program code 273.
  • the one or more memories 271 and the computer program code 273 are configured to, with the one or more processors 275, cause the core network element 290 to perform one or more operations.
  • Wireless networks may carry out network functions (NFs) by a plurality of cooperating devices.
  • the different NFs may include for example, Session Management Function (SMF) , Policy Control Function (PCF) , Application Function (AF) , Authentication Server Function (AUSF) , User Plane Function (UPF) , and User Data Management (UDM) .
  • SMF Session Management Function
  • PCF Policy Control Function
  • AF Application Function
  • AUSF Authentication Server Function
  • UPF User Plane Function
  • UDM User Data Management
  • certain protocols may be performed by one or more centralized units (CUs) in a cloud infrastructure, while one or more distributed units (DUs) operate the remaining protocols (e.g. real-time protocols) of the radio interface.
  • CUs centralized units
  • DUs distributed units
  • the various NFs may be split between CUs and DUs.
  • a CU, underlying DUs, and RRHs may be considered as forming a logical base station.
  • the second radio network system 200 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization involves platform virtualization, often combined with resource virtualization.
  • Network virtualization is categorized as either external, combining many networks, or parts of networks, into a virtual unit, or internal, providing network-like functionality to software containers on a single system. Note that the virtualized entities that result from the network virtualization are still implemented, at some level, using hardware such as processors 252 or 275 and memories 255 and 271, and also such virtualized entities create technical effects.
  • the computer readable memories 225, 255, and 271 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the computer readable memories 225, 255, and 271 may be means for performing storage functions.
  • the processors 220, 252, and 275 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi core processor architecture, as non-limiting examples.
  • the processors 220, 25 . 2, and 275 may be means for performing functions, such as controlling the UE 110, gNB 270, and other functions as described herein.
  • the link 231 may represent a 5G interface, such as NG2 or NG3 for example.
  • the RAN entity being involved to get the information regarding 5G system ⁇ 5GS ) disabled capabilities for better steering of the UE in handover
  • the UE 110 wishing to use a service such as IP Multimedia Subsystem (IMS) voice or Multimedia Broadcast Multicast Services (MBMS) for example
  • a service such as IP Multimedia Subsystem (IMS) voice or Multimedia Broadcast Multicast Services (MBMS) for example
  • IMS IP Multimedia Subsystem
  • MBMS Multimedia Broadcast Multicast Services
  • a first radio network system such as 4G LTE for example
  • MBMS Multimedia Broadcast Multicast Services
  • 5GS for example
  • the triggers and solutions to redirect the UE to EPC are limited to the UE NAS layer.
  • the 3GPP standard defines the requirement that UE NAS layer and IDLE UE NAS procedure should reselect a public land mobile network (PLMN) that guarantees connection to an LTE core, i.e. EPC.
  • PLMN public land mobile network
  • the information resides in the UE 110 and is exchanged between NAS and Access Stratum (AS) layer to perform cell reselection process.
  • AS Access Stratum
  • CN core network
  • the RAN node selects a target cell that is supported by the UE radio capabilities when handover (HO) is necessary.
  • the serving eNB should not select a target cell (e.g. an E-UTRA cell that is connected only to 5GC or NR cell) that is not connected to EPC, but the UE radio capabilities are not changed.
  • a target cell e.g. an E-UTRA cell that is connected only to 5GC or NR cell
  • the eNB would have been unaware of the disabled NAS level functionality in the UE.
  • the 'Nl mode disable' function in the UE 110 may trigger the following steps:
  • the UE AS idle mode procedures introduce new priorities for cells selection based on core type determined based on System Information provided by eNB/gNB.
  • eNB/gNB procedures introduce a new information element for the core network (CN) ⁇ EPC 190) to get that new information regarding the Nl disabled mode from the UE 110.
  • the Information Element regarding N1/5GS disabled may be made available to the RAN node from the CN entity.
  • the Information Element may be sent to the eNB 170 from the EPC 190.
  • the Information Element may be stored in the RAN entity to avoid handover to the -disabled system.
  • the Information Element may be stored in the eNB 190 to avoid handover of the UE 110 to a RAN entity of the 5GS.
  • the UE NAS selects PLMN priorities following the Nl disabled mode as indicated by 302.
  • the UE then reselects a cell that has a connection to EPC, and an indication is sent by a NAS message to the EPC 190 that the Nl mode is not supported by the UE as indicated by 306.
  • 306 shows that an indication that the Nl mode is not supported is sent at NAS level from the UE to the core network element.
  • the EPC 190 then sends a signal to the eNB 170 that the Nl mode for the UE 110 is not supported.
  • Step 308 shows that an indication that the Nl mode is not supported is sent in Sl-AP message from the core network element to the eNB that then stores this information and uses it when a target cell is selected for handover.
  • Steps 6, 7 and 8 may occur as indicated by 310, 312, 314 regarding RRC and measurement with neighbors for purposes of handover (HO) .
  • the eNB may select a target cell that has an EPC connection; avoiding a 5GCN connection.
  • An advantage of the method described above is consistent maintenance of UE context in case of dual core availability. Since radio conditions may take precedence over service priorities, NAS procedures disabling 5GS mode in the UE are respected. At the same time actual UE radio capabilities remain unchanged and unhidden, which may be crucial for radio connectivity in case the same radio cell can be connected to two cores. Note also that updating the UE radio capabilities is otherwise complex, and may also result in full service interruption such as, for example, in a case when the UE moves into an area where only 5G NR cells are available.
  • 3GPP TS 23.501 V15.1.0 defines support for migration from EPC to 5GC.
  • 5G system in Rel-15 does not support some of the functionalities supported in EPS such as ProSe, MBMS, CIOT optimizations, V2X etc.
  • the UE that wants to use one or more of the functionalities not supported by 5G System when "in CM- IDLE may disable all the related radio capabilities that allow the UE to access only 5G System".
  • the triggers to disable the 5GS capabilities to access 5G System are guided in 3GPP TS 24.501 VI.0.0 (2018-03) including:
  • the UE shall select a core network type (EPC or 5GCN) based on the PLMN selection procedures as specified in 3GPP TS 23.122. (..)
  • a UE which needs to remain on a first radio network system for a certain functionality not supported by a second radio network system can be prevented from being inadvertently redirected to the second radio network system.
  • Features as described herein may be used to address a problem that may arise when new 5G radio systems are installed in parallel to conventional (4G) systems.
  • the new core network 5GC may not support all features supported by the EPC. Therefore, if a dual compatibility UE (both 4G and 5G capable) wishes to use one of these features not-supported by 5GC, procedures are defined herein to ensure that the UE will connect to EPC (and not to 5GC) .
  • EPC and 5G are only used as one example. Connection to EPC may be achieved by disabling the UE capabilities to access the 5G system.
  • Features as described herein may be used to address a problem that may arise when dual compatibilities of the UE would lead to the condition of poorer quality or worse performance (for example power consumption).
  • an example embodiment may be provided in a method comprising: as indicated by block 400, receiving a first signal at a first core network entity of a first radio network system that a user equipment, coupled to a first radio access network entity of the first radio network system, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the first signal by the first core network entity, transmitting a second signal from the first core network entity to the first radio access network entity indicating that the user equipment has disabled the capability in regard to the second radio network system, as indicated by block 402.
  • the method may comprise the first signal received at the first core network entity comprise information from the user equipment.
  • the method may comprise the first signal comprising an information element comprising a N1 mode radio capability disabled.
  • the method may comprise the first core network entity being an evolved packet core network entity.
  • the method may comprise the second signal indicating that the first radio access network entity should not handover the user equipment to the second core network entity of the second radio network system.
  • the method may comprise the second signal indicating that the first radio access network entity should not handover the user equipment to a 5G network core.
  • the method may comprise the second signal comprising information to indicate to the first radio access network to generate a handover restriction list.
  • An example embodiment may be provide in an apparatus comprising: means for receiving a first signal at the apparatus that a user equipment, coupled to a first radio access network entity of the first radio network system, has disabled a capability in regard to a different second radio network system having a different second core network entity, where the apparatus comprises a first core network entity of a first radio network system; and means for, based upon receipt of the first signal by the first core network entity, transmitting a second signal from the first core network entity to the first radio access network entity indicating that the user equipment has disabled the capability in regard to the second radio network system.
  • the first signal received at the first core network entity may comprise information from the user equipment.
  • the first signal may comprise an information element comprising a N1 mode radio capability disabled.
  • the first core network entity may be an evolved packet core network entity.
  • the second signal may be configured to indicate that the first radio access network entity should not handover the user equipment to the second core network entity of the second radio network system.
  • the second signal may be configured to indicate that the first radio access network entity should not handover the user equipment to a 5G network core.
  • the second signal may comprise information to indicate to the first radio access network to generate a handover restriction list.
  • An example embodiment may be provide in an apparatus comprising a non-transitory program storage device readable by a machine, such as memory 155 for example, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: determining receipt of a first signal at a first core network entity of a first radio network system that a user equipment, coupled to a first radio access network entity of the first radio network system, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the first signal by the first core network entity, transmitting a second signal from the first core network entity to the first radio access network entity indicating that the user equipment has disabled the capability in regard to the second radio network system.
  • An example embodiment may be provide in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, such as memory 155 for example, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: determining receipt of a first signal at a first core network entity of a first radio network system that a user equipment, coupled to a first radio access network entity of the first radio network system, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the first signal by the first core network entity, transmit a second signal from the first core network entity to the first radio access network entity indicating that the user equipment has disabled the capability in regard to the second radio network system.
  • an example embodiment may be provided in a method comprising: as indicated by block 404, receiving a signal at a first radio access network entity from a first core network entity of a first radio network system, where the signal indicates that a user equipment, coupled to the first radio access network entity, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the signal from the first core network entity, the first radio access network entity avoiding handover of the user equipment to a second radio access network entity of the different second radio network system, as indicated by block 406.
  • the signal may comprise an information element indicating that a N1 mode radio capability of the user equipment is disabled.
  • the first core network entity may be an evolved packet core network entity.
  • the second radio network system may be a 5G radio network system and the second core network entity comprises a 5G network core, and where the signal may be configured to indicate that the first radio access network entity should not handover the user equipment to the 5G radio network system.
  • An example embodiment may be provide in an apparatus comprising means for receiving a signal at the apparatus from a first core network entity of a first radio network system, where the apparatus comprises a first radio access network entity, and where the signal indicates that a user equipment, coupled to the first radio access network entity, has disabled a capability in regard to a different second radio network system having a different second core network entity; and means for, based upon receipt of the signal from the first core network entity, avoiding handover of the user equipment by the a first radio access network entity to a second radio access network entity of the different second radio network system.
  • An example embodiment may be provide in an apparatus comprising a non-transitory program storage device, such as memory 155 for example, readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: determining receipt of a signal at a first radio access network entity from a first core network entity of a first radio network system, where the signal indicates that a user equipment, coupled to the first radio access network entity, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the signal from the first core network entity, the first radio access network entity avoiding handover of the user equipment to a second radio access network entity of the different second radio network system.
  • a non-transitory program storage device such as memory 155 for example, readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: determining receipt of a signal at a first radio access network entity from a first core network entity of
  • An example embodiment may be provide in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, such as memory 155 for example, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: determining receipt of a signal at a first radio access network entity from a first core network entity of a first radio network system, where the signal indicates that a user equipment, coupled to the first radio access network entity, has disabled a capability in regard to a different second radio network system having a different second core network entity; and based upon receipt of the signal from the first core network entity, avoid handover of the user equipment to a second radio access network entity of the different second radio network system.
  • an example embodiment may be provided in a method comprising: as indicated by block 408, receiving a request for a handover by a first radio access network entity regarding a user equipment coupled to the first radio access network entity, where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and the first radio access network entity preventing the handover of the user equipment to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system, as indicated by block 410.
  • An example embodiment may be provide in an apparatus comprising means for receiving a request for a handover by the apparatus regarding a user equipment coupled to the apparatus, where the apparatus comprises a first radio access network entity, where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and means for preventing the handover of the user equipment by the first radio access network entity to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system.
  • An example embodiment may be provide in an apparatus comprising a non-transitory program storage device, such as memory 155 for example, readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: receiving a request for a handover by a first radio access network entity regarding a user equipment coupled to the first radio access network entity, where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and the first radio access network entity preventing the handover of the user equipment to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system.
  • a non-transitory program storage device such as memory 155 for example, readable by a machine, tangibly embodying a program of instructions executable by
  • An example embodiment may be provide in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, such as memory 155 for example, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: receive a request for a handover by a first radio access network entity regarding a user equipment coupled to the first radio access network entity, where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and prevent the handover of the user equipment to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system.
  • an example embodiment may be provided in a method comprising: as indicated by block 412, receiving a request by a second radio access network entity for a handover of a user equipment coupled to a first radio access network entity, where the first and second radio access network entities are coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and receiving a signal by the second radio access network entity from at least one of the first radio access network entity or the first core network entity indicating that the second radio access network entity should not handover the user equipment to a radio access network entity of the second radio network system, as indicated by block 414.
  • An example embodiment may be provide in an apparatus comprising means for receiving a request for a handover by the apparatus regarding a user equipment coupled to the apparatus, where the apparatus comprises a first radio access network entity, and where the first radio access network entity is coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and means for preventing the handover of the user equipment from the first radio access network entity to the second radio network system based, at least partially, upon a signal received by the first radio access network entity from the first core network entity of the first radio network system.
  • An example embodiment may be provide in an apparatus comprising a non-transitory program storage device, such as memory 155 for example, readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: receiving a request by a second radio access network entity for a handover of a user equipment coupled to a first radio access network entity, where the first and second radio access network entities are coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and receiving a signal by the second radio access network entity from at least one of the first radio access network entity or the first core network entity indicating that the second radio access network entity should not handover the user equipment to a radio access network entity of the second radio network system.
  • a non-transitory program storage device such as memory 155 for example, readable by a machine, tangibly embodying
  • An example embodiment may be provide in an apparatus comprising at least one processor; and at least one non-transitory memory including computer program code, such as memory 155 for example, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: receive a request by a second radio access network entity for a handover of a user equipment coupled to a first radio access network entity, where the first and second radio access network entities are coupled to a first core network entity of a first radio network system, and where the user equipment is configured to be able to be used with both the first core network entity of the first radio network system or a different second radio network system having a different second core network entity; and receive a signal by the second radio access network entity from at least one of the first radio access network entity or the first core network entity indicating that the second radio access network entity should not handover the user equipment to a radio access network entity of the second radio network system.
  • Nl mode is supported may be sent to the CN and it can be, thus, inferred from the absence of the "Nl mode is supported” message that Nl mode is indeed not supported .

Abstract

L'invention concerne un procédé comprenant la réception d'un premier signal au niveau d'une première entité de réseau central d'un premier système de réseau radioélectrique dont un équipement utilisateur, couplé à une première entité de réseau d'accès radioélectrique du premier système de réseau radioélectrique, a désactivé une capacité par rapport à un second système de réseau radioélectrique différent possédant une seconde entité de réseau central différente ; et en fonction de la réception du premier signal par la première entité de réseau central, l'émission d'un second signal depuis la première entité de réseau central vers la première entité de réseau d'accès radioélectrique indiquant que l'équipement utilisateur a désactivé la capacité par rapport au second système de réseau radioélectrique.
EP18731892.8A 2018-05-10 2018-05-10 Maintien de sélection de système de réseau radioélectrique Pending EP3791626A1 (fr)

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PCT/IB2018/053264 WO2019215479A1 (fr) 2018-05-10 2018-05-10 Maintien de sélection de système de réseau radioélectrique

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EP3791626A1 true EP3791626A1 (fr) 2021-03-17

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ES2965202T3 (es) * 2016-09-30 2024-04-11 Ericsson Telefon Ab L M Conocimiento de la red central de un estado de equipo de usuario

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