An optical signal transmission method includes mapping a first optical data unit frame to a first flexible tributary unit frame, where the first flexible tributary unit frame includes a plurality of payload blocks; mapping the first flexible tributary unit frame to a first optical payload unit frame, where the plurality of payload blocks are distributed in a payload area of the first optical payload unit frame; mapping the first optical payload unit frame to a second optical data unit frame, where a bit rate of the second optical data unit frame is greater than a bit rate of the first optical data unit frame; mapping the second optical data unit frame to a first optical transport unit frame; and sending the first optical transport unit frame.

In an embodiment a method includes generating a raw data frame, wherein the raw data frame includes a physical synchronization block (PSB) and raw data, generating a preload pattern based on a target bit, wherein the target bit is a part of bits in a superframe counter (SFC) value corresponding to the raw data frame and scrambling the raw data based on the preload pattern to obtain target data.

A method for constructing an aggregated frame for efficient wireless communication in a high-density environment and a wireless communication method using the same is provided. The wireless communication method may include: generating an aggregated MPDU (A-MPDU) including a plurality of MAC protocol data unit (MPDU) groups to which independent modulation and coding schemes (MCSs) are applied, respectively; and transmitting the generated A-MPDU through the transceiver and a wireless communication terminal may use the same.

Apparatuses, methods, and systems are disclosed for video codec aware RAN configuration and unequal error protection coding. An apparatus includes a processor that detects a video coded traffic stream and a video codec specification used to encode the video coded traffic stream, determines an awareness of video coded traffic application data units (“ADUs”) of the video coded traffic stream as video coded network abstraction layer (“NAL”) units of data, aligns the video coded NAL units of the video coded traffic stream to physical layer (“PHY”) transport elements and subsequent channel coding element partitions for a video coded traffic aware PHY transport, determines a channel coding rate allocation of the channel coding element partitions, and applies a forward error correction (“FEC”) coding given at least the determined channel coding rate allocation of the video coded traffic aware PHY transport to channel coding element partitions for protection against radio transmission errors.

A transmission apparatus, in particular for use in a Low Throughput Network, comprises an FEC encoder configured to encode payload data into FEC code words each having a predetermined code word length, and a frame forming section configured to form a frame having a predetermined frame length. A frame comprises a first frame portion having a first predetermined length of an integer multiple of the predetermined code word length and a second frame portion having a second predetermined length shorter than the predetermined code word length. The frame forming section is configured to include an FEC code word and a predetermined number of repetitions of said FEC code word into the first frame portion of a frame and to include a selected number of bits of said FEC code word into the second frame portion of said frame.

A network node device of a communication network comprises physical (PHY) layer circuitry configured to transmit and receive data packets via a communication network; and processing circuitry connected to the PHY layer circuitry. The processing circuitry is configured to encode a data packet for sending according to a first communication protocol for sending to a second network node during a specified communication time slot, initiate resending of the data packet when the second network node does not respond during a specified acknowledge time slot, and encode the data packet according to a second communication protocol for sending to the second network node for a last retry attempt of a finite number of retry attempts, wherein the time to send the data packet formatted in the second communication protocol extends into the specified acknowledge time slot.

Error correction in network packets using lookup tables are disclosed herein. The method can include extracting soft information from copies of a network packet, using the soft information to select positions in a payload of the network packet with uncertain values of bits, changing values at the positions to a combination of values to obtain a modified payload of the network packet, and calculating the CRC for the modified payload. When the modified payload matches an error detection code in the network packet, errors in the payload are corrected.

A method and apparatus for transmitting cell-broadcast data in a wireless communication system is provided. A base station determines a transport block size (TBS) based on an aggregation level, and transmits the cell-broadcast data to a machine-type communication (MTC) user equipment (UE) by using the TBS. That is, different TBSs may be determined based on different aggregation levels.

Techniques pertaining to detailed signaling designs for distributed-tone resource unit (dRU) transmission in wireless communications are described. An apparatus generates a frame with indications of a resource unit (RU) type and a dRU distribution bandwidth . The apparatus then transmits the frame to another apparatus. The RU type is indicated in a Common Information field or a Special User Information field of the frame. The dRU distribution bandwidth is indicated in a Spatial Stream (SS) Allocation subfield of a User Information field of the frame.

The present invention relates to a method for constructing an aggregated frame for efficient wireless communication in a high-density environment and a wireless communication method using the same.

For this, the present invention provides a wireless communication method including: generating an aggregated MPDU (A-MPDU) including a plurality of MAC protocol data unit (MPDU) groups to which independent modulation and coding schemes (MCSs) are applied, respectively; and transmitting the generated A-MPDU through the transceiver and a wireless communication terminal using the same.