Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a communication system is provided. The method includes receiving disaster configuration information being encrypted; decrypting the disaster configuration information to verify an integrity of the disaster configuration information before acting upon or storing the disaster configuration information; and identifying whether a disaster roaming is available based on the disaster configuration information.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for handling communication in a wireless network by a user equipment (UE) is provided. The method includes receiving a non-access stratum (NAS) message indicating that the UE is not permitted to access a first public land mobile network (PLMN) over a satellite communication along with geographical indication or a timer indication from the first PLMN. Further, the method includes determining a geographical area based on the received geographical indication or a timer value based on the timer indication. Further, the method includes starting a timer with the timer value. Further, the method includes determining that the UE is not allowed to access the first PLMN in the determined geographical area or the expiry of the timer.

Abstract: Various embodiments herein disclose a method camping a User Equipment (UE) on a cell, the method comprising: creating a combined Most Recently Used (MRU) list by merging a list 4G MRU frequencies with a Public Land Mobile Network (PLMN) having a 5GC and a list of 5G MRU frequencies, determining whether one of a 4G cell with 5G core (5GC) and a 5G cell is available for camping by performing a MRU scan on the combined MRU list; performing one of: camping on one of the 4G cell with 5G core and the 5G cell in response to determining that one of the 5G cell and the 4G cell with 5G core is available and performing a 4G MRU frequency scan on a list of 4G without 5GC MRU frequencies in response to determining that one of the 4G cell with 5G core and the 5G cell is not available.

Abstract: A method for access control of a UE (120) connecting through a Mobile base station relay (MBSR)-UE (122) in a wireless network (1000) by an IAB-Donor gNB (108). The method includes connecting the UE (120) to the IAB-Donor gNB (108) through a first MBSR-UE (122) to receive an emergency service in the wireless network. Further, the method includes determining that the first MBSR-UE (122a) is about to become unavailable to provide the emergency service to the UE (120) in the wireless network. Further, the method includes transmitting a handover request message to the UE (120) to perform an handover procedure to move the UE (120) to a NG-RAN node (104) before the first MBSR-UE (122a) becomes unavailable in the wireless network upon determining that the first MBSR-UE (122a) is about to become unavailable.

Abstract: The present disclosure relates to a communication method and system for converging a 5G communication system for supporting higher data rates beyond a 4G system with a technology for IoT. Embodiments herein provide method for controlling disaster roaming service in a wireless network by UE. The method includes receiving a disaster roaming enabled indication from first PLMN or second PLMN associated with UE. Further, the method includes detecting a disaster condition. Further, the method includes determining whether the disaster roaming enabled indication indicates that a disaster roaming is disabled in UE or disaster roaming is enabled in UE. In an embodiment, the method includes enabling the disaster roaming service at UE and allowing UE to select the PLMN for using the disaster roaming service during the disaster condition in response to determining that disaster roaming is enabled in UE.

Abstract: In a scenario, wherein the UE is registered for disaster roaming services with the VPLMN, in a disaster scenario, the UE can periodically attempt to obtain service on an allowable PLMN. The UE can make a first attempt to obtain service on the allowable PLMN, after a T1 duration and at most a T duration on selecting the VPLMN. The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate.

Abstract: Provided is a method performed by a user equipment (UE) in a wireless communication system supporting Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN) New Radio (NR)-Dual Connectivity (ENDC). The method includes: receiving system information including information on an NR band list supported in the ENDC; identifying, based on the system information, NR bands supported at LTE frequencies of Long Term Evolution (LTE) bands in a most recently used (MRU) LTE frequency list of the UE; prioritizing the LTE frequencies in the MRU LTE frequency list, based on the supported NR bands and an ENDC capability of the UE; and performing a cell selection based on the prioritized MRU LTE frequency list.

Abstract: Disclosed is a method for power management of a User Equipment (UE) in multi-rat dual connectivity state. The method includes determining whether one of a first parameter or a second parameter related with an uplink data is met, when the UE is in the MR-DC state and comparing, when one of the first parameter or the second parameter is met, a value of a connected mode discontinuous reception (CDRX) configuration of a master cell group (MCG) cycle and a value of CDRX configuration cycle for a secondary cell group (SCG) cycle, wherein the UE is in the MR-DC state with the MCG and SCG. The method further includes determining an optimal CDRX configuration cycle among the MCG and the SCG based on a result of the comparison and transmitting the uplink data to a network entity over one of the MCG and SCG based on the optimal CDRX configuration cycle.

Abstract: Embodiments herein provide a method for controlling disaster area for disaster roaming service by a UE (100). The method includes detecting a disaster condition associated with a first PLMN (200a) that is associated with a first service provider. Further, the method includes sending a registration request to a second PLMN (200b) for the disaster roaming service. The second PLMN (200b) is associated with a second service provider and is available in a disaster area covered by the first PLMN (200a). Further, the method includes receiving a TAI list from the second PLMN (200b). The TAI list includes a set of tracking areas associated with the disaster area covered by the second PLMN (200b). Further, the method includes camping on the second PLMN (200b) for the disaster roaming service in the set of tracking areas indicated in the TAI list during the disaster condition with the first PLMN (200a).

Abstract: An example a method for managing paging restrictions in a wireless network includes detecting, by a UE, whether a first subscriber identity module (SIM) is configured for a dedicated data subscription (DDS). The method further includes detecting, by the UE, an occurrence of a trigger condition in connection with at least one of the first SIM and at least one second SIM and enabling, by the UE, a paging restriction to the at least one second SIM based on the occurrence of the predetermined trigger condition.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method for determining in-coverage or unreachability information in a satellite area network by a UE. The method includes determining whether the UE remains in no service on at least one of a PLMN and RAT till the coverage returns or the UE selects other PLMN or RAT to continue to receive the service. The method includes sending a unreachability period to an AMF.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a method for handling a deregistration procedure of a UE (100) for a disaster roaming service in a wireless network (1000) by the UE (100). The method includes detecting a disaster condition in the wireless network (1000). Further, the method includes triggering a registration procedure with a forbidden PLMN (FPLMN) on a 3GPP access to receive the disaster roaming service in the wireless network (1000) and get registered for the disaster roaming service with the FPLMN (300). Further, the method includes detecting a signal on a non-3GPP access to receive a normal service. Further, the method includes triggering a deregistration procedure with the FPLMN (300) on the 3GPP access to stop receiving the disaster roaming service from the FPLMN (300) in response to detecting the signal on the non-3GPP access to receive the normal service.

Abstract: A method of handling an ongoing call performed by a UE in a wireless network is provided. The method includes initiating a voice over long term evolution (VoLTE) call in a 4th generation (4G) network, detecting that a 5th generation (5G) network entity has configured an inter radio access technology (I-RAT) measurement indicating a change from the 4G network to a 5G network based on identification of the 5G network by the UE, determining whether at least one of the UE or the 5G network does not support a voice over new radio (VoNR) call with a 5G cell in the 5G network, and performing one of delaying sending a measurement report until the VoLTE call is completed in response to determining that the at least one of the UE or the 5G network does not support the VoNR call, or sending the measurement report immediately for the 5G cell in response to determining that both the UE and the 5G network support the VoNR call.

Abstract: 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.

Abstract: A method, and a user equipment (UE) for power saving through optimized early measurement of frequencies for secondary cell setup in cellular network are provided. The UE initiates a service with a base station associated with a primary cell supporting the early measurement of the frequencies for the secondary cell (SCell) setup. The UE determines whether the service belongs to one of a first service set, and a second service set. The early measurement of the frequencies for the S Cell setup is temporarily terminated, and/or the transmission of an early measurement report comprising the one or more frequencies for the SCell setup to the base station is temporarily terminated. Alternatively, the UE performs the early measurement of the frequencies for the SCell setup and transmits the early measurement report to the base station when the service belongs to the second service set.

Abstract: Embodiments herein disclose methods for handling operation of a UE during a disaster situation by the UE. The method includes initiating a wait timer upon selecting a forbidden public land mobile network (FPLMN) to receive a disaster roaming service. Further, the method includes determining whether at least one of: a MS is registered via a non-3GPP access or 3GPP access to another allowable PLMN, the FPLMN has stopped broadcasting a disaster related indication, and the FPLMN has stopped broadcasting the PLMN with the disaster condition. Further, the method includes stopping the wait timer and performing a PLMN selection procedure based on the determination. The provided method optimizes the operations in disaster situations.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods and systems for providing services efficiently in a wireless communication network, following a disaster condition. According to various embodiments, a method performed by a user equipment (UE) connected to at least one public land mobile network (PLMN), the method comprising: identifying that a disaster condition is applied to the at least one PMLN; determining one or more PLMN among at least one available PLMN, and one or more registration type supported by the determined one or more PLMN, wherein the one or more registration type include information on a normal registration or information on a disaster roaming registration; and triggering a registration procedure based on the determined one or more registration type.

Abstract: A method performed by a user equipment (UE) and a UE for managing cell selection in a cellular network based on early measurement feature is provided. The method includes detecting that a signal strength of a first cell to which the UE is connected is below at least one threshold parameter, identifying a plurality of secondary cells, in the vicinity of the UE, having signal strengths greater than the at least one threshold parameter and supporting early measurement features, wherein the plurality of the secondary cells include at least one New Radio (NR) cell, and selecting the at least one NR cell from the identified plurality of secondary cells for connecting to the cellular network.

Abstract: The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes, at switch-on or recovery from a lack of a coverage, identifying that a registered public land mobile network (PLMN) is a PLMN with which the UE is registered for a disaster roaming, and performing a PLMN selection procedure, based on the identification, wherein the registered PLMN is ignored during the PLMN selection procedure.

Abstract: A method for a data session switching by a User Equipment (UE) is provided. The method includes monitoring network broadcasted parameters of a second Subscriber Identity Module (SIM) of the UE while performing a Fifth Generation Cellular Network (5G) data session over a first SIM of the UE, where the first SIM is configured for a Default Data Service (DDS), detecting that a trigger criterion is met for the 5G data session switching to the second SIM based on the network broadcasted parameters, and in response to the trigger criterion being met, configuring the second SIM for the DDS for continuing the 5G data session over the second SIM.