A method and system for controlling handover of a user equipment device (UE) in a system including RAT1 access nodes and RAT2 access nodes. An example method includes, while the UE is served with dual-connectivity cooperatively by a first RAT1 access node and a first RAT2 access node, (i) using a comparison between spectral efficiency of the first RAT2 access node and spectral efficiency of the second RAT2 access node as a basis to set a measurement threshold to be applied by the UE for evaluating coverage of a second RAT1 access node for possible handover of the UE from the first RAT1 access node to the second RAT1 access node, and (ii) causing the UE to apply the measurement threshold for evaluating the coverage of the second RAT1 access node for the possible handover of the UE from the first RAT1 access node to the second RAT1 access node.

Certain aspects of the present disclosure relate to methods and apparatus for enhanced user equipment (UE) capability exchange for transitioning a connection from a first radio access technology system to a second radio access technology system. An exemplary method performed by a UE includes communicating with a first base station (BS) via a connection of a first radio access technology (RAT), determining, based on the first RAT, to omit a set of capabilities of the UE from capabilities information of the UE regarding a second RAT, transmitting the capabilities information of the UE regarding the second RAT to the first BS via the first RAT, communicating with a second BS via the second RAT according to the capabilities information, and sending an update of the capabilities information of the UE regarding the second RAT via the second RAT.

A device (110) arranged for wireless communication (130) has a processor (112) to execute a handover sequence to establish a new connection with a further device (120). A handover request message has a protocol indication indicating one or more alternative communication protocols that are supported by the requester and a channel indication indicating at least one channel to be used for a new connection. Upon receiving a first handover request message including an initial protocol indication and an initial channel indication, it is determined whether the new connection is to be established based on the initial protocol indication and via a selected channel based on the initial channel indication. If not so, the processor determines a second protocol indication and a second channel indication indicating at least one further channel to be used for the new connection and sends a second handover request message. Effectively the role of handover requester and handover selector are switched.

Methods, systems, and devices for wireless communication are described. In some wireless systems, a base station may configure a user equipment (UE) for random access (RACH) message transmission in dedicated RACH resources during, for example, a handover process. The contention-free random access (CFRA) resources may allow the UE to transmit RACH messages at a higher transmission power than contention-based random access (CBRA) resources. The base station may indicate, to the UE, RACH transmission parameters for CFRA that are different than parameters for CBRA. These parameters may include configuration information, frequency division multiplexing information, RACH retransmission parameters, target received power, response window length, etc. The UE may use the indicated RACH transmission parameters to transmit a RACH message to the base station. The base station may respond with a RACH response message, and the base station and UE may synchronize upon completion of the RACH procedure.

In an example aspect, a method performed by wireless device for communication establishment is provided. The method comprises, in response to a request for establishment of a communication with the wireless device using a first network, receiving a redirection instruction to redirect to a second network, and in response to whether a node in the second network supports communication with a node in the first network, selecting a first procedure or a second procedure for establishing the communication using the second network.

A method performed by a User Equipment (UE) includes receiving one of a stand-alone non-public network (SNPN) selection request, while the UE has stored at least one of cell (re)selection priorities (cellReselectionPriorities), deleting the stored at least one of cellReselectionPriorities when an SNPN selection in response to the SNPN selection request is performed by the UE, and stopping a T320 timer in response to receiving the SNPN selection request.

The present disclosure provides a method of setting reserved subframes for indication of a resource pool by a bitmap, a user equipment, and a base station. In the present disclosure, the resource pool is used for transmitting or receiving sidelink signals within a system frame number cycle that includes predefined subframes and remaining subframes that are subframes after excluding the predefined subframes within the system frame number cycle. In the method, a number of the reserved subframes is determined so that the bitmap is repeated by integer times within the subframes after excluding the reserved subframes and the predefined subframes within the system frame number cycle. In the method, position of each of the reserved subframes is set, wherein at most two reserved subframes are set per n subframes within the system frame number cycle.

A wireless telecommunications system including a terminal device; first infrastructure equipment operable to communicate with the terminal device using a first radio access technology (RAT) and second infrastructure equipment operable to communicate with the terminal device using a second RAT. During a handover procedure for handover from the first infrastructure equipment as a source master infrastructure equipment to a third infrastructure equipment as a target master infrastructure equipment, the second infrastructure equipment is operable to communicate with the third infrastructure equipment using an interface associated with the second RAT so as to allow information necessary for completing the handover to be exchanged between the first infrastructure equipment and the third infrastructure equipment via the second infrastructure equipment.

Systems and methods are disclosed for service request triggered fallback for an emergency service in a cellular communications system. Embodiments of a method performed by a wireless device for redirecting from a first wireless communication system to a second wireless communication system after having performed a service request in the first wireless communication system for an emergency call are also disclosed. In some embodiments, the method comprises transmitting a connection request message to a base station in the second wireless communication system as part of a connection establishment procedure whereby the wireless device establishes a connection to the second wireless communication system, the connection request message comprising an indication that a cause of connection establishment is an emergency. In this manner, the base station can provide emergency treatment for the connection request. Corresponding embodiments of a wireless device are also disclosed.

The present disclosure is related to multi-queue management techniques and packet reordering techniques for inter-radio access technology (RAT) and intra-RAT traffic steering. The multi-queue management and packet reordering techniques may be used in Multi-Access Management Services (MAMS) framework, which is a programmable framework that provides mechanisms for the flexible selection of network paths in a multi-access (MX) communication environment, based on an application's needs. Other embodiments may be described and/or claimed.