Huawei Technologies Co., Limited

Panasonic Corporation

Huawei International Pte. Ltd.

Zhan Yu

Yew Soo Eng

Kai Fu

Jian Wang

Suguru Fujita

Shengchen Dai

Jiajie Tong

Rui Yu

Tong Chen

Harya Wicaksana

Huazhang Liu

Rong Li

Theng Tee Yeo

Xuesong Chen

Zhiping Li

Heng Zhang

Changqing Xu

Xue Song Chen

This application provides a short-range wireless communication method and a related device. The method includes: generating a transmission frame. The transmission frame includes a frame header and a data domain, phase shift keying modulation is used for the frame header, and quadrature amplitude modulation or phase shift keying modulation is used for the data domain. The method includes sending the transmission frame. In this application, the phase shift keying modulation is used for the frame header of the transmission frame, and the phase shift keying modulation or the quadrature amplitude modulation with a same bandwidth is used for the data domain.

Short-range wireless communication method and related device

Methods, devices, and computer-readable storage media are disclosed. In an example method, segmentation of to-be-encoded information bits of a length N into respective quantities of different types of segments is performed. The different types of segments are among (b−a+1) types of segments that correspond to (b−a+1) different segment code lengths. The (b−a+1) types of segments comprise a minimum-length segment that has the minimum segment code length of 2{circumflex over ( )}and a maximum-length segment that has the maximum segment code length of 2{circumflex over ( )}. The respective quantities of the different types of segments are determined based on the length N and a code rate in an orderly manner, wherein the orderly manner comprises firstly determining a quantity of the maximum-length segments and lastly determining a quantity of the minimum-length segments. Polar code encoding is performed on the respective quantities of the different types of segments of the to-be-encoded information bits.

Polar code segment encoding method and communication device

A method includes determining, based on a length of to-be-encoded information bits and a code rate, a code length N after encoding; determining, based on N, a minimum segment code length and a maximum segment code length, a reserved segment quantity of each type of segments in segments of b−a+1 types of segment code lengths and a reserved code length corresponding to N, where the minimum segment code length is 2{circumflex over ( )}, and the maximum segment code length is 2{circumflex over ( )}; determining a segment quantity of each type of segments based on N, the reserved code length, a segment code length of each type of segments, and the reserved segment quantity, where N corresponds to S segments, and a segment code length of an isegment in the S segments is greater than or equal to a segment code length of an (i+1)segment in the S segments.

An audio data transmission method includes encapsulating, based on a physical layer frame header, a protocol data unit (PDU) including audio data, to obtain an audio data packet, where the physical layer frame header is modulated using a first digital modulation scheme, the PDU is modulated using a second digital modulation scheme, a value of a modulation rate of the first digital modulation scheme is equal to a value of a data transmission rate, and a value of a modulation rate of the second digital modulation scheme is less than the value of the data transmission rate, and sending the audio data packet on a BLUETOOTH low energy (BLE) physical channel at the data transmission rate.

High-speed audio data transmission method and apparatus

A system and method for an NFC card for use in asynchronous NFC card emulation mode transmission. The method comprises estimating carrier frequency offset between a carrier frequency of a NFC reader and a carrier frequency of the NFC card, adjusting digital baseband sampling of the baseband sample output at the NFC card emulation mode transmitter based on the estimated carrier frequency offset to obtain an adjusted baseband sample output and modulating a RF transmitter in the NFC card emulation mode transmitter based on the adjusted baseband sample output.

Asynchronous transmission for NFC card emulation mode

Embodiments of the invention provide a system and method for direct RF sampling a Near Field Communication (NFC) receiver at a rate higher than the carrier frequency by reducing and shifting requirements at a front end analog module to a digital module.

Apparatus and method for direct radio frequency (RF) sampling in near field communication (NFC) devices

A radio receiving apparatus and method of using thereof, in which the radio receiving apparatus includes a first synchronization circuit, a second synchronization circuit, and a demodulation section that demodulates an incoming signal based on one of synchronization information output from the first synchronization circuit and synchronization information output from the second synchronization circuit, the first synchronization circuit including a first correlation section that determines a correlation between the incoming signal and a first pulse template received as input at a timing corresponding to a first reference signal, the second synchronization circuit including a second correlation section that determines a correlation between the incoming signal and a second pulse template received as input at a timing corresponding to a second reference signal, and the first pulse template having a longer width than a width of the second pulse template.

Radio receiving apparatus and radio receiving method

A receiver in an impulse wireless communication. The receiver () includes a pulse-pair correlator () that receives a signal () and divides it into two signals for paths. One of the signals is input to signal multiplier () while another signal is delayed by a delay unit (). The signal multiplier () multiplies the received signal () by a delayed signal (). An integrator () integrates an output signal () over a designated period of time. An adding module () sums an output signal () from the integrator (). An acquiring module () compares an summing-up output () from the adding module () with a predetermined threshold value to detect the existence of a transmitting-standard preamble.

Method of acquiring initial synchronization in impulse wireless communication and receiver

A synchronization acquiring device and method for realizing synchronization acquisition at high speed equivalent to that of parallel search with a simple constitution similar to that of series search. A synchronization acquiring device () has a superposition template acquiring section () for acquiring superposition template signals generated by superposing template signals on one another, a first correlation detecting section () for detecting preliminary correlation matching between a superposition template signal and the received signal and, if the preliminary correlation matching is not detected, detects preliminary correlation matching after replacing the superposition template signal with another superposition template signal, and a second correlation detecting section () detects, if preliminary correlation matching is detected, the final correlation matching between a superposition template signal out of the template signals and the received signal.

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Singapore, Singapore

Zhan Yu