Provided are a cell switching method and apparatus, a device, and a storage medium. The method includes the following. A first interface message is sent to a second network element, where the first interface message carries UE related information; a user context modification instruction triggered by the second network element is received, where the user context modification instruction is determined and triggered according to the first interface message, and the user context modification instruction is configured for triggering the handover of a target UE from a source cell to a target cell.

This disclosure describes a user equipment device (UE). The UE includes one or more antennas; one or more radios configured to perform cellular communication using a plurality of radio access technologies (RATs) that support voice over an Internet protocol (IP) multimedia subsystem (IMS); and one or more processors coupled to the one or more radios. The one or more processors are configured to cause the UE to perform operations including: sending, to a communications network associated with a first RAT of the plurality of RATs, a first request for IMS registration, wherein the UE is camped on a first cell of the first RAT; determining, based on an IMS rejection failure, that the IMS registration failure is due to a temporary radio failure; and responsively attempting to perform the IMS registration on at least one other cell of the first RAT.

A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.

A method and a device for session setup and handover in a wireless communication system are provided. The method comprises receiving, from a second node, a message comprising a single network slice selection assistance information (S-NSSAI) of a protocol data unit (PDU) session; and allocating session resources for the PDU session based on the message received from the second node, wherein, in case that the S-NSSAI of the PDU session is supported by the first node, the session resources for the PDU session includes resources related to the S-NSSAI of the PDU session, and wherein, in case that the S-NSSAI of the PDU session is unsupported by the first node or the resources related to the S-NSSAI are unavailable or overloaded, the session resources for the PDU session includes other available resources for the PDU session.

A state notification method, a device, and a system are provided. The state notification method includes: before the first UE leaves a first network on which the first UE camps, determining, according to leaving notification configuration information, whether to send a leaving notification message; and when determining to send a leaving notification message, sending a leaving notification message to a first network device. The leaving notification message is used to indicate that the first UE will leave the first network, and the first network is a network in which the first network device is located.

A client device is configured to communicate with an access point over a wireless network, exchanging data with the access point over a selected communication channel. The client device stores an identifier of the selected communication channel. After the wireless connection to the access point has ended, the client device initiates a process to reconnect to the access point over the selected communication channel using the stored identifier.

Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an evolved node B (eNB) may comprise a processor circuit, a communication component for execution by the processor circuit to receive a channel quality index for a physical downlink shared channel (PDSCH), the channel quality index associated with a defined reference resource, and a selection component for execution by the processor circuit to select a modulation and coding scheme (MCS) for transmission over the PDSCH of user equipment (UE) data in one or more resource blocks, the selection component to compensate for a difference between a cell-specific reference signal (CRS) overhead of the defined reference resource and a CRS overhead of the one or more resource blocks when selecting the MCS. Other embodiments are described and claimed.

A method includes: when performing information transmission with a first access point AP on a first frequency band, determining, whether the terminal equipment needs to establish a connection with a second AP, which is a second frequency band; determining, by the terminal equipment, whether the first AP and the second AP are corresponding to a same dual-band radio access device; sending, by the terminal equipment, a connection request to the second AP when maintaining a protocol layer connection with the first AP; and if establishing, by the terminal equipment, the connection with the second AP when the second AP send feedback.

Systems and methods perform a failover, handoff type of process for machines actively encoding and transcoding media content or other data, including live video. Based on dynamic analyses, including detection of needed updates due to security anomalies and encoder state evaluations, the encoder instance initially receiving a stream can restart following handoff to another encoder instance. System downtime is minimized through actions such as initializing the replacement encoder and passively migrating network resources to same, without any explicit coordination or messaging between the two instances.

A User Equipment (UE) registers with a Long Term Evolution (LTE) network. The UE registers with an Internet Multimedia Subsystem (IMS) over the LTE network. The UE registers with a Wireless Fidelity (WIF) network. The UE receives a status request from the LTE network responsive to a Session Initiation Protocol (SIP) invite for the UE received at the IMS. The UE transfers a status response to the LTE network that indicates the WIFI network responsive to the status request. The UE receives the SIP invite from the IMS over the WIFI network. The UE exchanges user data for the media session over the WIFI network.