Method and system for handling registered public land mobile network during disaster situation in wireless network
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method for handling a RPLMN during a disaster situation in a wireless network by a UE. In an embodiment, the method includes selecting RPLMN as PLMN with the disaster condition for accessing the disaster roaming services in response to determining that the RPLMN is included in a list of PLMNs with disaster condition for which disaster roaming services is offered by another PLMN and is allowable. In another embodiment, the method includes skipping the RPLMN and determining a PLMN with disaster condition for acessing the disaster roaming services in response to determining that the at least one PLMN is not included in the list of PLMNs with the disaster condition for which disaster roaming services is offered by the another PLMN or is not allowable.
1 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station, a list of at least one first public land mobile network (PLMN) with disaster condition for which disaster roaming is offered;
identifying whether a registered PLMN (RPLMN) of the UE is included in the list of the at least one first PLMN and is allowable; and
transmitting, to the base station, a registration request message including a second PLMN as a PLMN with disaster condition.
2 . The method of claim 1 , wherein the list is broadcast by a next generation radio access network (NG-RAN) cell.
3 . The method of claim 1 , wherein, the second PLMN is selected in following order:
first, a Home PLMN (HPLMN) when an Equivalent HPLMN (EHPLMN) list is not present or is empty,
second, a highest priority EHPLMN that is available when the EHPLMN list is present,
third, each PLMN in a “user controlled PLMN selector with access technology” data file in a Subscriber Identity Module (SIM) in a priority order,
fourth, each PLMN in an “operator controlled PLMN selector with access technology” data file in a SIM in a priority order or stored in a mobile Equipment (ME) in a priority order, and
fifth, random PLMNs available.
4 . The method of claim 1 , wherein, in case that the RPLMN is in the list of the at least one first PLMN and is allowable, the second PLMN includes the RPLMN.
5 . The method of claim 1 , wherein, in case that the RPLMN is now allowable, the second PLMN does not include the RPLMN.
6 . A method performed by a base station in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), a list of at least one first public land mobile network (PLMN) with disaster condition for which disaster roaming is offered; and
receiving, from the UE, a registration request message including a second PLMN as a PLMN with disaster condition,
wherein the second PLMN is based on whether a registered PLMN (RPLMN) of the UE is included in the list of the at least one first PLMN and is allowable.
7 . The method of claim 6 , wherein the list is broadcast by a next generation radio access network (NG-RAN) cell.
8 . The method of claim 6 , wherein, the second PLMN is selected in following order:
first, a Home PLMN (HPLMN) when an Equivalent HPLMN (EHPLMN) list is not present or is empty,
second, a highest priority EHPLMN that is available when the EHPLMN list is present,
third, each PLMN in a “user controlled PLMN selector with access technology” data file in a Subscriber Identity Module (SIM) in a priority order,
fourth, each PLMN in an “operator controlled PLMN selector with access technology” data file in a SIM in a priority order or stored in a mobile Equipment (ME) in a priority order, and
fifth, random PLMNs available.
9 . The method of claim 6 , wherein, in case that the RPLMN is in the list of the at least one first PLMN and is allowable, the second PLMN includes the RPLMN.
10 . The method of claim 6 , wherein, in case that the RPLMN is now allowable, the second PLMN does not include the RPLMN.
11 . A user equipment (UE) comprising:
at least one transceiver;
at least one processor communicatively coupled to the at least one transceiver; and
at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the UE to:
receive, from a base station, a list of at least one first public land mobile network (PLMN) with disaster condition for which disaster roaming is offered,
identify whether a registered PLMN (RPLMN) of the UE is included in the list of the at least one first PLMN and is allowable, and
transmit, to the base station, a registration request message including a second PLMN as a PLMN with disaster condition.
12 . The UE of claim 11 , wherein the list is broadcast by a next generation radio access network (NG-RAN) cell.
13 . The UE of claim 11 , wherein, the second PLMN is selected in following order:
first, a Home PLMN (HPLMN) when an Equivalent HPLMN (EHPLMN) list is not present or is empty,
second, a highest priority EHPLMN that is available when the EHPLMN list is present,
third, each PLMN in a “user controlled PLMN selector with access technology” data file in a Subscriber Identity Module (SIM) in a priority order,
fourth, each PLMN in an “operator controlled PLMN selector with access technology” data file in a SIM in a priority order or stored in a mobile Equipment (ME) in a priority order, and
fifth, random PLMNs available.
14 . The UE of claim 11 , wherein, in case that the RPLMN is in the list of the at least one first PLMN and is allowable, the second PLMN includes the RPLMN.
15 . The UE of claim 11 , wherein, in case that the RPLMN is now allowable, the second PLMN does not include the RPLMN.
16 . A base station comprising:
at least one transceiver;
at least one processor communicatively coupled to the at least one transceiver; and
at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the base station to:
transmit, to a user equipment (UE), a list of at least one first public land mobile network (PLMN) with disaster condition for which disaster roaming is offered, and
receive, from the UE, a registration request message including a second PLMN as a PLMN with disaster condition,
wherein the second PLMN is based on whether a registered PLMN (RPLMN) of the UE is included in the list of the at least one first PLMN and is allowable.
17 . The base station of claim 16 , wherein the list is broadcast by a next generation radio access network (NG-RAN) cell.
18 . The base station of claim 16 , wherein, the second PLMN is selected in following order:
first, a Home PLMN (HPLMN) when an Equivalent HPLMN (EHPLMN) list is not present or is empty,
second, a highest priority EHPLMN that is available when the EHPLMN list is present,
third, each PLMN in a “user controlled PLMN selector with access technology” data file in a Subscriber Identity Module (SIM) in a priority order,
fourth, each PLMN in an “operator controlled PLMN selector with access technology” data file in a SIM in a priority order or stored in a mobile Equipment (ME) in a priority order, and
fifth, random PLMNs available.
19 . The base station of claim 16 , wherein, in case that the RPLMN is in the list of the at least one first PLMN and is allowable, the second PLMN includes the RPLMN.
20 . The base station of claim 16 , wherein, in case that the RPLMN is now allowable, the second PLMN does not include the RPLMN.