A method and apparatus is provided that improves the quality of voice calls in a mobile communication network. The method of performing transmission/reception of signals in an evolved Node B (eNB) of a mobile communication system includes: receiving a first message including service request information from user equipment (UE); transmitting a second message including the service request information to an Mobility Management Entity (MME); receiving a third message including context information for the UE from the MME; and determining an inactivity timer value for the UE based on the context information. The method and apparatus can maintain, when a voice call is created, connection with calling UE from when the called UE answers the call until the call is set up, thereby preventing part of a caller's voice data from being lost.

A method for call processing comprising processing telecommunications data with an Over-The-Top (OTT) client on a handset, determining whether to use a voice over long term evolution (VoLTE) client or a WiFi client in response to an operational change and reconfiguring the handset to use the VoLTE client or the WiFi client if the determination is made to use the VoLTE client or the WiFi client, respectively.

According to various embodiments, an electronic device may include at least one antenna module; and at least one processor configured to receive a communication service from a first communication network, a second communication network, and an IP multimedia subsystem (IMS) network via the at least one antenna module, wherein the at least one processor may be configured to: access the first communication network based on first identification information which corresponds to the first communication network, via the accessed first communication network, based on second identification information which corresponds to the IMS network, request the IMS network to register the electronic device, if registration request to the IMS network fails, access the second communication network, and request the IMS network to register the electronic device via the second communication network. Other various embodiments are possible.

This application discloses data transmission that includes: dividing to-be-transmitted content into a plurality of data units at a session layer; transmitting the data units to the target terminal device by using a first transmission channel as a responsible channel of the to-be-transmitted content; distributing, by the session layer in a case that the session layer switches the responsible channel of the to-be-transmitted content from the first transmission channel to a second transmission channel with a different transmission protocol, the data units to the second transmission channel; and transmitting the data units distributed by the session layer to the target terminal device through the second transmission channel. In data transmission in this application, the session layer controls switching of the channels and distribution of the data units, so that the transmission sequence is free from constraints of protocols and the degree of freedom in data transmission is increased.

This application discloses data transmission that includes: dividing to-be-transmitted content into a plurality of data units at a session layer; transmitting the data units to the target terminal device by using a first transmission channel as a responsible channel of the to-be-transmitted content; distributing, by the session layer in a case that the session layer switches the responsible channel of the to-be-transmitted content from the first transmission channel to a second transmission channel with a different transmission protocol, the data units to the second transmission channel; and transmitting the data units distributed by the session layer to the target terminal device through the second transmission channel. In data transmission in this application, the session layer controls switching of the channels and distribution of the data units, so that the transmission sequence is free from constraints of protocols and the degree of freedom in data transmission is increased.

The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or one or more networks. In one aspect, the apparatus receives an MBMS video streaming service through broadcast from a first network. In addition, the apparatus determines a failure in association with the reception of the broadcasted MBMS video streaming service. Further, the apparatus receives, based on the determined failure of the broadcasted MBMS video streaming service, the MBMS video streaming service through unicast from a second network. In one configuration, the apparatus transmits information to the second network indicating that the MBMS video streaming service through broadcast from the first network has failed. In such a configuration, the MBMS video streaming service through unicast from the second network is received based on the transmitted information.

Embodiments of systems and methods for securing media stream communications involving an Internet Protocol Multimedia Subsystem (IMS) media communication link and a non-IMS media communication link may include establishing a shared key between the UE and a second UE via the IMS media communication link, and using the shared key to protect communications between the UE and the second UE sent via the non-IMS media communication link.

Various arrangements for configuring wireless network access for a first wireless device using a previously-configured second wireless device are presented. The first wireless device may output a temporary wireless network hotspot and advertise an identifier. A second wireless device may search for and identify the first wireless device based on the advertised identifier. The second wireless device may connect with the temporary wireless network hotspot and provide wireless network credentials for a wireless network for which the second wireless device has previously been granted access. The first wireless device may then establish a network connection with the wireless network based on the wireless network credentials transmitted by the second wireless device.

Techniques for buffering data over high bandwidth networks are provided. A first portion of data is downloaded into a buffer at a first download speed via a first network. The first portion of data is outputted from the buffer. Upon determining that data is being downloaded, via a second network, at a second download speed greater than the first download speed, a size of the buffer is expanded, and a second portion of data is downloaded into the expanded buffer.

A method of operating a mobile communication system of a motor vehicle is provided for initiating a voice call with a third party. The system includes an ECU, and the ECU includes a controller and a memory storing computer code. The method includes the steps of: (a) initiating a timer; (b) operating the ECU in a first mode in which the ECU attempts to engage in a VoNR call via a first network; (c) repeating step (b) within a predetermined amount of time until the ECU successfully engages in the VoNR call; and (d) operating the ECU in a second mode to attempt to engage in a VoLTE call via a second network in response to the controller determining that the ECU in the first mode did not successfully engage in the VoNR call within a predetermined amount of time.