Future Wei Technologies, Inc.

Huawei Technologies Co., Limited

Yumin Tang

Julia Wang

Jing Yu

Tongzeng Yang

Limei Wang

Cunshou Qiu

A method for transmitting audio is disclosed that includes transmitting, by a sending terminal, a sending audio signal to a receiving terminal after a connection between the sending terminal and the receiving terminal is established, the sending audio signal comprises a sending audio, receiving a playing audio played by the receiving terminal; and determining that the sending audio is not played by the receiving terminal based on the sending audio and the playing audio, notifying that the sending audio transmitted to the receiving terminal is not played by the receiving terminal.

Method and apparatus for transmitting audio

The disclosure includes a method for rapidly recovering the speed of TCP transmission after a cross technology handover experienced by a mobile device. In the method, the mobile device receives a sequentially first TCP data packet after the cross technology handover completes via a TCP session between the mobile device and a remote TCP server, generates a first acknowledgement (ACK) associated with the sequentially first TCP data packet, where the first ACK comprises a first Selective ACK (SACK) option, removes the first SACK option from the first ACK when a gap exists between data in the sequentially first TCP data packet and data received before the cross technology handover occurs, and sends the first ACK without the first SACK option to the remote TCP server via the TCP session. Because the ACK is without the SACK option when the gap exists, the speed of TCP transmission will be recovered rapidly.

Controlling TCP data transmission

A mobile device comprises physical layer circuitry including a transceiver configured to communicate information via the cellular communication network; a modem of the mobile device configured to: control communication according to a first cellular communication protocol standard; detect a change in the communication to a second cellular communication protocol standard different from the first cellular communication protocol standard; and communicate an indication of completion of the change in the cellular communication protocol standard; and a transport control protocol (TCP) layer of the mobile device configured to initiate transmission of three duplicate acknowledgment (ACK) packets according to the second cellular communication protocol standard in response to receiving the indication of completion of the change in the cellular communication protocol standard.

Remove TCP deadlock caused by wireless device cross technology handover

An apparatus, computer program, and method are provided for acceleration of a handover if mobile communication device signaling is degrading. Signal information is received in connection with a mobile communication device being serviced by a cell of a network. It is determined whether the signal information indicates that at least one aspect of a signaling in connection with the mobile communication device is degrading. An acceleration of a handover is conditionally caused in connection with the mobile communication device, if it is determined that the signal information indicates that the at least one aspect of the signaling in connection with the mobile communication device is degrading.

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San Diego, CA, United States of America

Yumin Tang