Systems, methods, apparatuses, and computer-program products for performing carrier aggregation across different radio access technologies are disclosed. For example, in some instances a method of wireless communication includes transmitting, using a first wireless communication device, control information to a second wireless communication device via a first radio access technology (RAT), the control information including control information for a second RAT; and receiving, at the first wireless communication device, an acknowledgement (ACK) or negative acknowledgement (NACK) from the second wireless communication device via the first RAT, the ACK or NACK being related to communications of the second wireless communication device conducted via the second RAT.

A method performed by user equipment (UE) includes receiving a request to access a service unavailable through a first network cell associated with the UE, and receiving a message from an access device associated with the first network cell, wherein the message identifies a plurality of second network cells providing the service.

A user equipment (UE) can perform dual registration with different radio access technology (RAT) system. The UE registers with a core network of a second system independent of a first system while maintaining registration with a core network of the first system. The UE transmits, to the second system, first information indicating that the UE has the registration with the first system when connecting to the second system. One of the first and second systems may be a LTE system using a first radio access technology (RAT), and the other one may be new RAT system using a second RAT different from the first RAT.

A communication device for handling mobility between a new radio (NR)/fifth generation (5G) network and a long-term evolution (LTE) network comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise connecting to the NR/5G network; communicating a Protocol Data Unit (PDU) Session identity/identifier (ID) identifying a PDU Session with the NR/5G network; communicating data of the PDU Session with the NR/5G network; disconnecting the NR/5G network, connect to the LTE network and performing a tracking area update (TAU) procedure with the LTE network; disconnecting the LTE network and connect to the NR/5G network, after performing the TAU procedure; and communicating the PDU Session ID identifying the PDU Session with the NR/5G network, when disconnecting the LTE network and connecting to the NR/5G network.

Facilitating a conversation using resources of devices within an environment is described. A user within an environment can be determined to be engaged in a conversation with another person via a mobile device. Characteristics of the environment can be determined and devices that can provide playback of content of the conversation or receive content of the conversation can be identified based on the characteristics of the environment. Playback of content and receiving of content can then be provided using the resources of the devices.

A system and method of supporting packet-switched handover of a mobile station (MS) from a GERAN/UTRAN cell to a Generic Access Network (GAN) cell within a GAN. If the MS is within coverage of the GAN cell, the MS registers within the GAN, triggering initiation of the packet-switched handover from the GERAN/UTRAN cell to the GAN cell. A preparation phase is then conducted for executing the packet-switched handover. The preparation phase includes identifying the MS context as part of the preparation phase and activating the GA-PSR TC towards the MS. Next, the packet-switched handover is executed, resulting in the MS switching to GAN mode. The MS then begins transferring packets via the GAN cell. The system and method also supports a packet-switched handover from the GAN cell to the GERAN/UTRAN cell.

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).

Various solutions for enhancements of manual network selection in emergency services handling are described. An apparatus may determine whether it is in a condition of having the ongoing emergency service or attempting to obtain emergency services before an association between the apparatus and a core network of a wireless network for the emergency services is established. The apparatus may determine not to perform a manual network selection in an event that the apparatus is in the condition of having the ongoing emergency service or attempting to obtain the emergency services before the association between the apparatus and the core network is established.

Embodiments of the present application relate to the field of communication and provide a method, a network device, and an apparatus for communication system handover, and a medium, for handover of the communication system of a terminal. The method includes: includes an AMF sends a handover request carrying first indication information to an NG-RAN node corresponding to an identifier of a target NG-RAN node; and the NG-RAN node determines the address of data forwarding according to the first indication information.

The present disclosure provides a method (600) in an Access and Mobility Management Function, AMF. The method (600) includes, in a 5.sup.th Generation System, 5GS, to Evolved Packet System, EPS, handover procedure of a User Equipment, UE: receiving (610), from a Next Generation Radio Access Network, NG-RAN, node, a secondary Radio Access Technology, RAT, usage data report message including a Secondary RAT Usage Data Report Transfer Information Element, IE, containing secondary RAT usage data associated with the UE; and transmitting (620), to a Mobility Management Entity, MME, a message including a first IE containing the secondary RAT usage data.