Abstract: Embodiments herein disclose UE based implementations to manage voice/video over new radio (VoNR)/EPSFB calls. In an embodiment, there can be a zero CQI reporting for indicating a signal deterioration during the VoNR call. In an embodiment, at least one of a Wi-Fi network or a dual SIM dual standby (DSDS) feature, a UE initiated fallback procedure and an internet bearer can be used for continuing the VoNR call. Various embodiments may reduce the call failures and manage calls on VoNR/5G which can be useful to the UE in volatile signal conditions.

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: A method for optimizing selection of a Standalone Non-Public Network (SNPN) by a User Equipment (UE), includes: receiving, from a Public Land Mobile Network (PLMN) or a SNPN, SNPN selection parameters associated with a PLMN subscription list corresponding to one or more Universal Subscriber Identity Modules (USIMs), wherein the SNPN selection parameters comprises a list of SNPNs, and a plurality of configuration parameters supported by the PLMN for the one or more USIMs; and selecting at least one SNPN from the list of SNPNs based on the PLMN subscription list and storing SNPN selection parameters along with a USIM being associated with the SNPN selection parameters.

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. A method for handling a local area data network (LADN) service area in a wireless network is provided. The method performed by an access and mobility management function (AMF) entity in a wireless communication system includes receiving, from a user equipment (UE), capability information indicating that the UE supports a local area data network (LADN) per data network name (DNN) and single network slice selection assistance information (S-NSSAI), identifying an LADN service area for a DNN and an S-NSSAI, and transmitting, to the UE, information on the DNN, information on the S-NSSAI, and information on the LADN service area.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods for handling a network slice admission control (NSAC) performed by a Network Function (NF) service consumer (200) in a wireless network (1000). The method includes determining that an existing Protocol Data Unit (PDU) session has been handed over from a source access to a target access. Further, the method includes performing a network slice admission control for the PDU session, based on the determination, by interacting the NF service consumer with a Network Slice Admission Control Function (NSACF) entity (300).

Abstract: A method of a user equipment (UE) for establishing a session with one or more Stand-alone Non-Public Networks (SNPNs) includes first sending a service request to a SNPN network entity while the UE is in an idle mode, monitoring a response to the service request based on a first timer and a counter, initiating a second timer in response to determining that the counter exceeds a threshold count, receiving an indication of a change in a current SNPN, or an update associated with a selected entry of the current SNPN, stopping the second timer, and second sending the service request to the SNPN network entity for connection with a new SNPN, or the current SNPN with the update, the second sending being performed in response to determining that the second timer has stopped, and the second sending being performed while the UE remains in the idle mode.

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

Abstract: Methods and systems for managing AMF re-allocation is provided. The method for managing AMF reallocation during UE registration procedure with a 5G network comprises: determining if the first AMF may send a routing assistance information to the UE, on the first AMF determining that the first AMF is not a right AMF to serve the UE; sending a routing assistance information, to the UE, as response to a first registration request message; receiving routing assistance information from the first AMF; sending a second registration request message to a 5G RAN of the 5G network comprising a portion of content included in the routing assistance information; and routing the second registration request message to a second AMF of the 5G network, wherein the second AMF is determined by the 5G RAN based on the portion of content included in the routing assistance information.

Abstract: A method and system in the User Equipment (UE) for maintaining rejected network slice selection assistance information (NSSAI) for Single Network Slice Selection Assistance Information (S-NSSAI) not available due to maximum number of UEs reached per access type. The method comprises receiving a Non-Access Stratum (NAS) message including at least one of a registration accept, registration reject or CONFIGURATION UPDATE COMMAND message along with at least one of rejected Single Network Slice Selection Assistance Information (S-NSSAI(s)) information and a cause for the S-NSSAI not available due to maximum number of UEs reached from a network. Thereafter, the method includes determining by the UE an access type on which the rejected S-NSSAI(s) is applicable based on the received S-NSSAI(s) information and then maintaining a storage of the rejected NSSAI for the S-NSSAI not available due to the maximum number of the UEs reached per access type based on the determination.

Abstract: A method for handling collision of signaling messages between a user equipment (UE) and a network entity is disclosed. The method includes transmitting a first signaling message comprising a first access type and a second signaling message comprising a second access type different from the first access type. The UE is registered on a network for the first access type and the second access type. The method also includes determining that the first access type and the second access type correspond to different access types. The method further includes processing the first signaling message and the second signaling message based on the determination by processing of the first signaling message and the second signaling message in parallel or re-triggering one or more of the first signaling message or the second signaling message.

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. 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: 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. 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: 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: According to various embodiments, a method performed by a user equipment (UE) in a wireless network may include receiving a steering of roaming connected mode control information (SOR-CMCI) configuration or SOR information from a network entity, initiating a timer in response to receiving the SOR-CMCI configuration or the SOR information from the network entity, identifying whether the UE is in an idle mode before expiry of the timer, in case that the UE is in the idle mode, identifying a condition under which the UE is in the idle mode, and performing, based on the condition, a first operation of allowing the timer to continue running, or a second operation of stopping the timer and selecting a public land mobile network (PLMN).

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a wireless network and methods to maintain a MA PDU session at a NSACF entity. The method includes determining, by a SMF entity, that a PDU session is the MA PDU session based on an indication from a UE. Further, the method includes indicating, by the SMF entity, that the PDU session is the MA PDU session to the NSACF entity in response to determination. The wireless network may maintain the count accurately even though the PDU session is a MA PDU session.

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.