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) for optimizing a multi-access protocol data unit (MA-PDU) session is provided.

Abstract: The disclosure relates to 5G or 6G communication system for supporting a higher data transmission rate. In an embodiment, a method includes deciding to use 3GPP access or non-3GPP access; and based on the decision, transmitting a service request message or a registration request message to an access and mobility management function (AMF) over the 3GPP access or the non-3GPP access, wherein in case that paging restriction information is not included in the service request message or the registration request message transmitted over the 3GPP access, stored paging restriction information regarding context of the UE is removed at the AMF.

Abstract: According to an example embodiment of the disclosure, a method for performing network slice reselection by a User Equipment (UE) is disclosed. The method comprises identifying allowed network slices within a first Network Slice Simultaneous Registration Group (NSSRG) for first applications at the UE. The method comprises receiving an initialization request from a second application at the UE. The method comprises determining one or more UE Route Selection Policy (URSP) rules for the second application. The method comprises determining whether the network slice required for the second application corresponds to one of the one or more allowed network slices within the first NSSRG. The method comprises transmitting, to a network, a second registration request for registration of the UE to a second NSSRG including the network slice required for the second application based on the URSP rules for the second application.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments disclosed herein relate to methods and systems for updating a partially allowed network slice selection assistance information (NSSAI) list, and managing a congestion timer/back-off timer for an alternative single-NSSAI (S-NSSAI) in wireless communication networks. The methods include removing network slice support information stored in a user equipment (UE), if a Non-Access Stratum (NAS) message from a network indicates to delete the network slice support information. The methods include applying a back-off timer to the S-NSSAI to be replaced (S-NSSAI-1)/alternative S-NSSAI (S-NSSAI-A)/combination of S-NSSAI-A+S-NSSAI-1, on receiving a Packet Data Unit (PDU) session establishment request, when the network is congested.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate.

Abstract: In an example embodiment, a method of optimizing service delivery performed by a UE operating in EN-DC mode is disclosed. The method comprises detecting that a network service is ongoing at the UE using a first radio access technology (RAT), based on an application request sent by the UE to a network, wherein the first RAT is one of long-term evolution (LTE) and NR. The method further comprises detecting, during the ongoing network service being availed using the first RAT, a frequency of one or more NR network procedures being performed by the UE to be greater than a first threshold frequency. The method further comprises modifying a measurement interval associated with an NR cell measurement procedure, in response to detecting the frequency of the NR network procedures to be greater than the first threshold frequency. Furthermore, the method comprises continuing the Network Service using the first RAT.

Abstract: Methods and systems are provided for handling non-3rd generation partnership project (3GPP) slice registration in 3GPP networks. A protocol data unit (PDU) session is managed in a wireless communication network in which a user equipment (UE) determines the allowed PDU session which can be transferred from non-3GPP access to 3GPP access. Paging resources are managed in a wireless communication network in which an access and mobility management function (AMF) checks if the data to be sent on the PDU session of non-3GPP access is of single-network slice selection assistance information (S-NSSAI) which is in an allowed network slice selection assistance information (NSSAI) list of 3GPP access.

Abstract: A user equipment (UE) and a method to maintain service session continuity in a wireless communication network are provided. The UE includes a transceiver, memory storing one or more computer programs, and one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors, cause the UE to identify an application running on the UE and a corresponding packet data unit (PDU) session mapping for the application data route, defer a re-evaluation of UE route selection policy (URSP), until at least one condition has been met, based on an application type, and trigger the re-evaluation and applying highest priority URSP rules for traffic for the identified application during an ongoing service session based on the application type.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments disclosed herein provide method for managing a Network Slice Selection Assistance Information (NSSAI) list in a wireless network by a UE. The method includes receiving at least one event. The at least one event includes: receiving a deregistration request message from a network function (NF) entity, performing a deregistration event at the UE, or successfully completing a tracking area update procedure, a successful registration procedure, or an unsuccessful registration procedure. Further, the method includes deleting: a partially rejected NSSAI list or a partially allowed NSSAI list based on the at least one received event.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Methods and systems are provided in which control plane data is blocked for partially allowed network slice selection assistance information (NSSAI) and network slice area of service (NS-AoS) when a user equipment (UE) is in an area/cell/tracking area (TA) where the S-NSSAI is not available/supported. The UE initiates the NAS transport procedure for a cellular Internet of things (CIOT) user data container when the UE is in an area/cell/TA where the S-NSSAI is not available/supported of NS-AOS area. The UE initiates the NAS transport procedure for the CIOT user data container when the UE is in an area/cell/TA where the S-NSSAI is not available/supported of S-NSSAI supported area.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The principal object of the embodiments herein is to disclose methods and systems for evaluating and re-evaluating a user-equipment route selection policy (URSP) rule in a wireless network. A method for re-evaluating at least one user-equipment route selection policy (URSP) rule in a wireless network, the method comprising: initiating, by a user equipment (UE), re-evaluation of the at least one USRP rule; and checking, by the UE, for a correct Route Selection Descriptor (RSD) for an application, on one of the UE moving to a tracking area (TA) where single-network slice selection assistance information (S-NSSAI) is allowed, and the UE receiving a partially allowed network slice selection assistance information (NSSAI).

Abstract: Embodiments herein provide a method for managing a priority of Visited Public Land Mobile Networks (VPLMNs) of a wireless communication network. The method includes receiving a registration accept message including steering of roaming (SoR) information from a VPLMN; in response to a security check of the SoR information being failed, adding the VPLMN to a SoR abort list including PLMNs where a registration was aborted due to SoR; and deleting the SoR abort list after a predetermined time period.

Abstract: The disclosure discloses a system and a method implemented in the UE to perform PLMN selection using a locally stored slice aware steering of roaming (SoR) list. According to an embodiment the UE prioritizes the PLMN based on the locally stored SoR list. The UE further maintains an updated enhanced slice aware SoR information list having an updated network slice support information along with granularity information per tracking area identity of each PLMN in a database of the UE. In an embodiment, the UE updates the SoR information list in its database based on a response that is received upon sending a registration request from the PLMN.

Abstract: An apparatus for selecting network slices for servicing application requests, includes: a memory storing at least one instruction; and at least one processor operatively connected to the memory and configured to execute the at least one instruction to: receive an application request from an application for establishing a new protocol data unit (PDU) session with a network over a first network slice, wherein the application request comprises one or more PDU session requirements, identify a plurality of network slices other than the first network slice, based on the one or more PDU session requirements; select a second network slice from the plurality of network slices, based on a configuration related to the apparatus; and perform a service corresponding to the application request using the second network slice.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments disclosed herein relate to wireless communication networks, and more particularly to managing PDU sessions in wireless communication networks. The method maintains by a user equipment (UE), a count value for the maximum number of PDU sessions for a first access and a second access on a first network entity (NE). The UE sends a PDU session establishment request when a number of active PDU sessions is lower than the count value for the maximum number of PDU sessions or an established PDU session is released on one or more of the first access and the second access in which the maximum number of the PDU sessions has been reached.

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: A method of selecting access network for routing data of user equipment (UE) is provided. The method includes receiving trigger indicating a requirement of one or more network services. Further, the method includes determining that a UE is registered on a Third Generation Partnership Project (3GPP) access network and a non-3GPP access network simultaneously. The method includes identifying availability of one or more network services in the 3GPP access network and the non-3GPP access network. Thereafter, the method includes selecting one of, the 3GPP access network and the non-3GPP network, based on availability of one or more network services in one of, the 3GPP access network and the non-3GPP access network, or selecting one of, the 3GPP access network and the non-3GPP network based on one or more network parameters, when one or more network services are available in the 3GPP access network and the non-3GPP access network.

Abstract: A method for re-evaluating one or more user equipment route selection policy (URSP) rules associated with a user equipment (UE) in communication with a network entity is disclosed. The method comprises receiving, at a user equipment non-access stratum (UE NAS) layer, a back-off timer from the network entity. The back-off timer is related to non-initiation of a packet data unit (PDU) session associated with an application within the UE. The method comprises initiating, by the UE, the PDU session associated with the application. The method comprises indicating, by the UE NAS layer, an expiry of the back-off timer. The method comprises, upon the expiry of the back-off timer, re-evaluating, by the UE, the one or more URSP rules to determine whether a change of association of the PDU session with the application is required.

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 mobile communication system is provided. The method comprises receiving, from an access management function (AMF) entity via a base station, a configuration update command message in case that the UE supporting a multi universal subscriber identity module (MUSIM) feature is not registered for an emergency service, and disabling the MUSIM features based on the received configuration update command message. The configuration update command message includes registration result information indicating that the UE supporting the MUSIM features is registered for the emergency service.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. For example, the disclosure relates to a method for switching a data session for an application, implemented in a user equipment with dual SIM. The method includes: determining a User Equipment (UE) Route Selection Policy (URSP) rule for a primary Subscriber Identity Module (SIM) and a secondary SIM. The method includes detecting a trigger for switching the data session of the application to the secondary SIM based on determination of the URSP rule, wherein the trigger includes one of a matching traffic descriptor, a dedicated network slice, a Quality of Service (QoS) rule and a user preference. The method includes configuring the secondary SIM for the DDS based on the trigger; and switching the data session of the application to the secondary SIM for continuing the data session.