Communication devices and systems with correct regeneration of an audio signal are disclosed. In one example, a communication device measures a number of predetermined reference clocks included in one cycle of a frequency divided signal, on the basis of an audio master clock having a frequency obtained by multiplying a frequency of a sampling clock to sample an audio signal, a frequency division ratio of a frequency divided signal of the audio master clock, and a predetermined reference clock. A packet generator generates a packet including information including the measured number, a bit width of serial data (SD) conforming to an Inter-IC Sound (I2S) standard, the frequency of the sampling clock, a frequency division ratio of the frequency divided signal to the audio master clock, a frequency ratio of the frequency of the audio master clock to the frequency of the sampling clock, and the SD.

A method for transmitting and receiving data in a wireless communication system, and an apparatus therefor are disclosed. Specifically, a method for receiving data by means of a terminal comprises the steps of: receiving setting information related to one or more control resources which are set to a first set or a second set of control resources, respectively; receiving a first physical control channel and a second physical control channel based on the setting information; receiving a first physical data channel based on the first set of control resources associated with the control resource which receives the first physical control channel; and receiving a second physical data channel based on the second set of control resources associated with the control resource which receives the second physical control channel, wherein each of the first physical data channel and the second physical data channel may be scrambled based on different initial values.

A method and a device, which: receive, from a base station through a demodulation reference signal (DMRS) symbol, a DMRS set according to a specific pattern by the base station, wherein the DMRS is transmitted in a specific antenna port and positioned on one or two time axis symbols, which are the same as at least one other DMRS transmitted in another antenna port; and decode data by using the DMRS.

A method and a device, which: receive, from a base station through a demodulation reference signal (DMRS) symbol, a DMRS set according to a specific pattern by the base station, wherein the DMRS is transmitted in a specific antenna port and positioned on one or two time axis symbols, which are the same as at least one other DMRS transmitted in another antenna port; and decode data by using the DMRS.

An apparatus is provided. The apparatus performs operations including selecting a high efficiency long training field (HE LTF) sequence for a frame, selecting an HE LTF transmission mode from one of a 4×HE LTF mode, a 2×HE LTF mode, and a 1×HE LTF mode, transmitting only a set of allocated subcarriers of the HE LTF sequence for the frame, and transmitting a set of additional fields of the frame using the set of allocated subcarriers and a set of unallocated subcarriers. The set of additional fields includes a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signaling field (L-SIG), a high efficiency signaling A field (HE-SIG-A), and a high efficiency short training field (HE-STF). Transmitting of the HE LTF sequence for the frame uses only one or more of the set of allocated subcarriers, and none of the unallocated subcarriers.

An apparatus is provided. The apparatus performs operations including selecting a high efficiency long training field (HE LTF) sequence for a frame, selecting an HE LTF transmission mode from one of a 4×HE LTF mode, a 2×HE LTF mode, and a 1×HE LTF mode, transmitting only a set of allocated subcarriers of the HE LTF sequence for the frame, and transmitting a set of additional fields of the frame using the set of allocated subcarriers and a set of unallocated subcarriers. The set of additional fields includes a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signaling field (L-SIG), a high efficiency signaling A field (HE-SIG-A), and a high efficiency short training field (HE-STF). Transmitting of the HE LTF sequence for the frame uses only one or more of the set of allocated subcarriers, and none of the unallocated subcarriers.

A channel parameter determination method, apparatus and computer readable medium that improve efficiency of a network device in a communication network. The efficiency of the network device is improved by obtaining a first parameter; and, determining a second parameter of a channel by using at least one channel parameter model based on the first parameter.

A method and an apparatus for indicating the time of aperiodic channel status information (CSI) report in a wireless communication system are provided. The method for a user equipment (UE) configured to operate in a wireless communication system includes receiving configuration information about a resource of a reference signal from a base station, receiving, from the base station, feedback configuration information set based on the reference signal, receiving, via a downlink control information (DCI), a feedback transmission timing and an aperiodic CSI trigger transferred in the same slot as the reference signal, estimating an aperiodic channel status between the UE and the base station (BS) based on the reference signal, generating feedback information based on the estimated aperiodic channel status, and transmitting the feedback information to the base station based on the feedback transmission timing.

A method and an apparatus for indicating the time of aperiodic channel status information (CSI) report in a wireless communication system are provided. The method for a user equipment (UE) configured to operate in a wireless communication system includes receiving configuration information about a resource of a reference signal from a base station, receiving, from the base station, feedback configuration information set based on the reference signal, receiving, via a downlink control information (DCI), a feedback transmission timing and an aperiodic CSI trigger transferred in the same slot as the reference signal, estimating an aperiodic channel status between the UE and the base station (BS) based on the reference signal, generating feedback information based on the estimated aperiodic channel status, and transmitting the feedback information to the base station based on the feedback transmission timing.

Methods and apparatus for scheduling time sensitive operations among independent processors. In one embodiment, an application processor (AP) determines transmission timing parameters for a baseband processor (BB). Thereafter, the AP can generate and transact generic time-sensitive real time transport (RTP) data with the BB in time for transmission via a Long Term Evolution (LTE) communication stack.