Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

Abstract: Various solutions for handling back-off timer in session management level congestion control with respect to user equipment and network apparatus in mobile communications are described. An apparatus may establish a first connection with a first packet data network (PDN) or packet data protocol (PDP) type. The apparatus may transmit a first request message with a second PDN or PDP type for establishing a second connection. The apparatus may receive a reject message with a reject cause. The apparatus may transmit a second request message for establishing the second connection without initiating a default back-off timer.

Abstract: A mobile communication device with a processor is provided. The processor determines whether an Inter-Radio Access Technology (IRAT) procedure is ongoing when receiving a request for a Mobile Originated (MO) call, starts a first guard timer in response to the IRAT procedure being ongoing, and performs an Access Domain Selection (ADS) for making the MO call in response to the IRAT procedure being completed and the first guard timer not expiring.

Abstract: A method for managing a call during a handover procedure in a communications system is disclosed. The method is used in a user equipment (UE). The method includes: receiving a request for disconnecting a voice call from an end user; determining whether a Single Radio Voice Call Continuity (SRVCC) or Reverse Single Radio Voice Call Continuity (rSRVCC) handover procedure is being performed; and performing an action for the voice call when the request for disconnecting the voice call is received during the SRVCC or rSRVCC handover procedure.

Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

Abstract: Aspects of the disclosure provide a method for call management. The method includes receiving a signal from one of a first transceiver and a second transceiver in an electronic device. The signal indicates an incoming call managed by a first service provider that the electronic device subscribes service from. The method further includes determining whether the other of the first transceiver and the second transceiver is operative in an active call managed by a second service provider that the electronic device subscribes service from, and rejecting the incoming call when the other transceiver is operative in the active call managed by the second service provider.

Abstract: A method for handling a call conflict in a communications network is disclosed. The method is used in a user equipment (UE) in a communications network. The method includes: receiving, by a mobile terminated (MT) call handling module, an MT call request for establishing an MT call from a network on a first access domain; detecting, by a call conflict handling module, whether a mobile originated (MO) call is being established at the same time by an MO call handling module on a second access domain; and transmitting, by a call conflict handling module, signals to the MT call handling module and the MO call handling module to indicate how to handle the MT call and the MO call.

Abstract: A method for managing a call during a handover procedure in a communications system is disclosed. The method is used in a user equipment (UE). The method includes: receiving a request for disconnecting a voice call from an end user; determining whether a Single Radio Voice Call Continuity (SRVCC) or Reverse Single Radio Voice Call Continuity (rSRVCC) handover procedure is being performed; and performing an action for the voice call when the request for disconnecting the voice call is received during the SRVCC or rSRVCC handover procedure.

Abstract: A mobile communication device with a processor is provided. The processor determines whether an Inter-Radio Access Technology (IRAT) procedure is ongoing when receiving a request for a Mobile Originated (MO) call, starts a first guard timer in response to the IRAT procedure being ongoing, and performs an Access Domain Selection (ADS) for making the MO call in response to the IRAT procedure being completed and the first guard timer not expiring.

Abstract: A resource allocation apparatus, method, application program, and computer readable medium thereof are provided. A plurality of data streams are transmitted to a plurality of receiving ends via a network resource, wherein each of the receiving ends has a subscribing status. Each of the data streams comprises a plurality of data layers. First, required data are sent to the receiving ends. Then, an efficiency ratio of each of the possible transmission combinations is dynamically calculated. Finally, data layers comprised in the possible transmission combination that has the greatest efficiency ratio are transmitted to the receiving ends. Efficiency ratios are calculated according to the whole network resource, the channels of the receiving ends, and the characters of the data streams. By the aforementioned arrangement, data layers received by the receiving ends can be adjusted dynamically. Thus, the efficiency of the network resource can be increased.

Abstract: A resource allocation apparatus, method, application program, and computer readable medium thereof are provided. A plurality of data streams are transmitted to a plurality of receiving ends via a network resource, wherein each of the receiving ends has a subscribing status. Each of the data streams comprises a plurality of data layers. First, required data are sent to the receiving ends. Then, an efficiency ratio of each of the possible transmission combinations is dynamically calculated. Finally, data layers comprised in the possible transmission combination that has the greatest efficiency ratio are transmitted to the receiving ends. Efficiency ratios are calculated according to the whole network resource, the channels of the receiving ends, and the characters of the data streams. By the aforementioned arrangement, data layers received by the receiving ends can be adjusted dynamically. Thus, the efficiency of the network resource can be increased.