A communication system comprising: input buffers adapted for buffering incoming data streams of samples from one or more channels; a receiver adapted for sequentially processing data from the input buffers; a processing rate of the receiver is higher than or equal to an incoming data rate of the incoming data; context memory adapted for saving an internal status of the receiver after processing the data corresponding with an input buffer before switching to a next input buffer and for restoring the internal status, wherein the receiver is adapted for processing the incoming data in a frame detection phase, and in a frame demodulation phase in which frames and/or subframes are demodulated into bits and wherein the internal status of the receiver related to an input buffer is only saved and restored in the frame detection phase or before and after demodulating subframes.

A method for controlling media reception at an electronic device communicating with at least one external device includes establishing a communication session between the electronic device and the at least one external device via a server; in response to establishing the communication session, creating an instance of a first reception control state machine for controlling multiple media receptions in the communication session; receiving, from the server, a media transmission notification indicating that a media reception is available from an external device; receiving, from a user of the electronic device, an input for permitting the media reception; and in response to receiving the input, transmitting a media reception request requesting the media reception to the server and creating an instance of a second reception control state machine for controlling the media reception.

Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for receiving a first packet comprising a first sequence number (SEQN) and a second packet comprising a second SEQN, and obtaining a first hash for the first packet and a second hash for the second packet. The receiving device may classify the second packet as one of a new packet or a retransmission of the first packet based on a comparison between the first SEQN and the second SEQN and a comparison between the first hash and the second hash. The receiving device may selectively process the payload of the second packet based on the classifying.

An image communication apparatus, an image communication method, and a non-transitory recording medium. The image communication apparatus stores communication quality information related to transmission and reception of image data by the image communication apparatus after transmission and reception of the image data is completed through a communication line, stores a communication parameter, a set value related to the communication parameter, and settings related to the communication parameter, determines whether or not the communication parameter stored in the one or more memories needs to be corrected based on the communication quality information read from the one or more memories, and when correction of the communication parameter is determined necessary, correct the communication parameter requiring correction stored in the one or more memories.

Various solutions for random access procedure with listen-before-talk (LBT) detection with respect to user equipment and network apparatus in mobile communications are described. An apparatus may initiate a random access preamble transmission. The apparatus may perform an LBT procedure before the random access preamble transmission. The apparatus may determine whether the LBT procedure has failed. The apparatus may perform a random access resource selection procedure in an event that the LBT procedure has failed.

A method for setting a time advance group (TAG) identifier includes: receiving configuration information sent by a base station, the configuration information comprising a supplement uplink (SUL) carrier configured for a serving cell of user equipment (UE); and setting, according to the configuration information, TAG identifiers (IDs) for the SUL carrier and a non-SUL carrier of the serving cell of the UE.

A computer system is provided for exchanging data with a second computer system using a one-way protocol. The computer system includes a communication port, a memory configured to store instructions, and a processor disposed in communication with the memory. The processor upon execution of the instructions is configured to receive via the communication port a plurality of data packets of a data transmission transmitted in accordance with a one-way protocol from the second computer system, the data transmission representing a data structure, each data packet having a header that indicates a data type of the data transmission, and determine if a data packet of the data transmission is missing based on the data type and the number of data packets received.

Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for receiving a first packet comprising a first sequence number (SEQN) and a second packet comprising a second SEQN, and obtaining a first hash for the first packet and a second hash for the second packet. The receiving device may classify the second packet as one of a new packet or a retransmission of the first packet based on a comparison between the first SEQN and the second SEQN and a comparison between the first hash and the second hash. The receiving device may selectively process the payload of the second packet based on the classifying.

The invention relates to a method of requesting retransmission of a lost data packet initially transmitted by a multicast transmitter in a network, the multicast transmitted multicasting data packets in the network, said method being carried out by a first multicast receiver and comprising the following steps: upon detection (201) of a loss of at least one data packet on a data link between the multicast transmitter and the first multicast receiver, setting (206) a timer value and arming (207) a timer; upon detection (208) that the timer reaches the set timer value, sending (209) a non-acknowledgment message to the multicast transmitter via an uplink control link, said non-acknowledgment message comprising an identifier of at least one lost data packet, if it has not been previously retransmitted by the multicast transmitter.

A method for operating a network entity (BS) for a cellular radio communications network (4) is provided, the method comprising: receiving first multicast/broadcast traffic data; buffering the first multicast/broadcast traffic data; transmitting the first multicast/broadcast traffic data via a first downlink channel (DMCH); receiving a retransmission request via an uplink channel (UFCH); determining second multicast/broadcast traffic data in dependence on the buffered first multicast data and in dependence on the received retransmission request; and transmitting the second multicast/broadcast traffic data via a second downlink channel (DRCH).