A method and an apparatus for transmitting a PPDU on the basis of an S-TDMA in a wireless LAN system are presented. Particularly, an AP transmits a trigger frame to a first STA and a second STA. The AP receives, on the basis of the trigger frame, a first trigger-based frame from the first STA and a second trigger-based frame from the second STA. The trigger frame includes a common information field and a user information field. The common information field includes S-TDMA indication information enabling the S-TDMA to be performed. The user information field includes: allocation information on a first RU to which the first trigger-based frame and the second trigger-based frame are transmitted; first symbol offset information on the first trigger-based frame; and second symbol offset information on the second trigger-based frame.

Methods and apparatus for emulating optical modules. A method includes receiving, from an optical module emulator, a first serial data stream having the plurality of upstream signals multiplexed into a plurality of bits; wherein the first data stream includes a plurality of frames, each frame having a multi-frame alignment bit; and de-multiplexing the plurality of upstream signals based on each multi-frame alignment bit within each respective frame. A method includes receiving, from an emulator controller, a second serial data stream having a plurality of downstream signals multiplexed into a plurality of bits; wherein the second serial data stream includes a plurality of frames, each frame having a multi-frame alignment bit; and de-multiplexing the plurality of downstream signals based on each multi-frame alignment bit within each respective frame.

[Problem to be Solved] To provide a serial data transmission device that makes it possible to dynamically switch a band or a data transmission path and enhance the stability to failure while multiplexing and transmitting data by a TDM method when serial data is transmitted between a plurality of daisy-chained data transmission devices.

[Solution] There is provided a serial data transmission device including: a receiver that receives data serially transmitted by a time-division multiplex method from another device daisy-chained to the serial data transmission device; a transmitter that serially transmits data by the time-division multiplex method to another device daisy-chained to the serial data transmission device; and a controller that controls serial transmission by the receiver and the transmitter, in which the controller performs control to make the serial transmission by the transmitter adjustable.

Provided are a method for managing an ONU in a passive optical network, an OLT and a system. The method includes determining a first quiet window and a second quiet window, and allocating the first quiet window to an ONU within a first preset distance range and allocating the second quiet window to an ONU within a second preset distance range, where the distance between the optical line terminal (OLT) and the ONU within the first preset distance range is less than the distance between the OLT and the ONU within the second preset distance range.

A method and apparatus for multiplexing different numerologies in a wireless communication system is provided. A network node divides a scheduling unit into a plurality of basic time resource units in time domain, and multiplexes multiple numerologies by unit of a basic time resource unit. The basic time resource unit for the multiple numerologies may be aligned with each other at a basic time resource unit level or a subframe level.

Communication reception that enables reception of a packet which may not contain an error without invalidating the same is disclosed. In one example, an information analyzing unit analyzes a data string and frame/slot information, and supplies TMCC information, slot header information, and data length information to a packet length indicating unit and a packet dividing unit. The packet length indicating unit defines the packet length in advance, and indicates the defined packet length to the packet dividing unit. The packet dividing unit performs packet division on the basis of the packet length obtained from the TMCC information, the slot header information, the data length information and the like from the information analyzing unit, and the packet length defined by the packet length indicating unit.

A bandwidth allocation device is included in a communication system having a terminal station device and a terminal device and relaying upstream data, which is received from a communication terminal by a lower device connected to the terminal device, to an upper device connected to the terminal station device. The bandwidth allocation device includes a transmission-permitted period start position determining unit configured to estimate a start position of an arrival period in which the upstream data arrives at the terminal device from the lower device; a transmission-permitted period length determining unit configured to estimate a length of the arrival period based on an amount of upstream data to be transmitted from the lower device to the terminal device; and a bandwidth allocation unit configured to allocate a bandwidth to the terminal device based on the estimated start position and the estimated length of the arrival period.

The embodiments of the invention disclose a data encapsulation and transmission methods, a device, and a computer storage medium. The data encapsulation method comprises: encapsulating, according to a CPRI line bit rate at a receiving terminal and using FTN encapsulation, a frame corresponding to CPRI to be a block frame combination comprising at least block frame, wherein each block frame comprises 256 words, and each word comprises a frame overhead byte and a frame payload byte.

A slot consistency verification method is provided. The method is applied to a fine granularity service scenario, and includes: a sending end receives first information from a receiving end, where the first information indicates that a receiving slot used by the receiving end to receive a fine granularity service is consistent with a sending slot used by the sending end to send the fine granularity service; and the sending end sends a data block to the receiving end, where the data block includes a first basic frame overhead and a basic frame payload, the basic frame payload is for bearing the fine granularity service, and the fine granularity service is borne in the sending slot. According to the application, it is ensured that the sending slot used is consistent with the receiving slot, thereby ensuring normal running of the fine granularity service.

An apparatus includes a radio frequency (RF) receiver, which includes a digital signal arrival (DSA) detector to detect arrival of a transmitted signal. The DSA detector includes a signal correlator and at least one of (a) an absolute received signal strength indication (RSSI) detector; (b) a relative RSSI detector; and (c) a frequency offset detector). The RF receiver further includes a demodulator coupled to the DSA detector to demodulate a received signal and to provide a demodulated signal, and a synchronization word detector (SWD) coupled to the demodulator to receive the demodulated signal.