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公开(公告)号：EP4336872A1
公开(公告)日：2024-03-13
申请号：EP21940244.3
申请日：2021-05-21
发明人： ZHANG, Heng , FU, Kai , LI, Zhiping , YU, Zhan
IPC分类号： H04W4/80
摘要： This application provides a short-range wireless communication method and a related device. The method includes: generating a transmission frame, where 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; and 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, to improve a transmission rate of the transmission frame. A format of the transmission frame is simple, and transmission time of the frame header is short, to achieve a high throughput and a low latency.
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公开(公告)号：EP3742772A1
公开(公告)日：2020-11-25
申请号：EP19754467.9
申请日：2019-01-08
发明人： LIU, Huazhang , YU, Zhan , CHEN, Tong
IPC分类号： H04W4/80
摘要： An audio data transmission method and device are disclosed. The 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 by using a first digital modulation scheme, the PDU is modulated by 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. According to embodiments of this application, an audio data transmission rate can be increased, and therefore transmission of higher-definition audio data is supported.
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公开(公告)号：EP4401462A1
公开(公告)日：2024-07-17
申请号：EP22885664.7
申请日：2022-10-11
发明人： WU, Gengshi , FU, Kai , YU, Zhan , XIE, Zichen
IPC分类号： H04W28/04
CPC分类号： Y02D30/70 , H04W28/04 , H04W4/80 , H04L1/1607
摘要： Embodiments of the present disclosure relate to a method, a device, a storage medium, and a computer program product for short-range wireless communication. The method provided herein includes: A receiving device receives a data frame from a sending device; generates a feedback frame for the data frame, where the feedback frame includes an encoded access code of the data frame, and the encoded access code indicates whether the data frame is correctly received; and sends the feedback frame to the receiving device. In this manner, an existing bottleneck problem of a packet header during retransmission and combination is avoided, a signal-to-noise ratio during retransmission and combination is greatly improved, and lower sensitivity is implemented. In addition, when no additional overheads are generated, receiving performance during retransmission and combination in a strong interference environment is greatly improved, and anti-interference performance of a receiver is significantly improved.
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公开(公告)号：EP4362380A1
公开(公告)日：2024-05-01
申请号：EP21950594.8
申请日：2021-07-23
发明人： YU, Rui , CHEN, Xuesong , LIU, Supeng , WANG, Lei , YU, Zhan , YEO, Thengtee
摘要： This application discloses a near field communication NFC apparatus and an open-loop control method, to avoid a case in which a digital phase-locked loop performs a phase tracking operation based on a discontinuous first carrier signal. A near field communication NFC apparatus is provided, where the near field communication NFC apparatus includes: a clock extractor, configured to perform clock recovery based on a first carrier signal sent by an NFC card reader to obtain a field clock signal; a digital phase-locked loop, configured to perform frequency tracking on the field clock signal to output a first clock signal; a digital baseband chip, configured to perform load modulation based on the first clock signal to generate a second carrier signal; and a controller, configured to: detect a frequency or a phase of the field clock signal, and selectively perform open-loop control on the digital phase-locked loop based on a detection result.
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公开(公告)号：EP4386421A1
公开(公告)日：2024-06-19
申请号：EP21957190.8
申请日：2021-09-18
摘要： This application provides a localization method, apparatus, and system. The localization method in this application includes: obtaining phase value groups respectively corresponding to a plurality of anchor nodes, where phase values corresponding to the plurality of anchor nodes are obtained through measurement after the plurality of anchor nodes perform frequency shifting and receive a signal sent by a target node while performing frequency shifting, and the phase value group includes phase values of a plurality of frequencies; and determining a location of the target node based on the phase value groups respectively corresponding to the plurality of anchor nodes. In this application, time consumed in a localization process can be reduced, and localization efficiency and a refresh rate of a location of a target node can be improved.
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公开(公告)号：EP4325957A1
公开(公告)日：2024-02-21
申请号：EP21936457.7
申请日：2021-04-16
IPC分类号： H04W72/00
摘要： This application relates to a communication method and apparatus using an unlicensed spectrum, applied to the field of short-range communication, and in particular, to scenarios such as smart driving, smart home, and intelligent manufacturing. The method includes: generating broadcast information; and sending the broadcast information on at least one broadcast channel on a predefined frequency band, where the at least one broadcast channel includes a first broadcast channel, and a center frequency of the first broadcast channel is 2403 MHz, 2404 MHz, 2420 MHz, 2421 MHz, 2422 MHz, 2423 MHz, 2424 MHz, or 2481 MHz. According to a broadcast channel configuration manner in this solution, signal interference on the unlicensed spectrum can be reduced, and communication quality can be improved.
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公开(公告)号：EP4248586A1
公开(公告)日：2023-09-27
申请号：EP21909302.8
申请日：2021-12-17
IPC分类号： H04B10/116 , G01S19/47 , H04N7/18
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公开(公告)号：EP4340237A1
公开(公告)日：2024-03-20
申请号：EP21944561.6
申请日：2021-06-09
发明人： YU, Rui , CHEN, Xuesong , LIU, Supeng , WANG, Lei , YU, Zhan , YEO, Theng Tee
摘要： Embodiments of this application relate to the field of communication technologies, and provide a near-field communication chip, a phase synchronization method, and an electronic device, to quickly synchronize a transmitted signal of an NFC card device with a carrier of an NFC card reader. The near-field communication chip includes: a processing circuit, configured to determine a first carrier frequency offset between a local clock signal and a carrier clock signal, and generate a first frequency control word based on the first carrier frequency offset, where the carrier clock signal is determined based on a received signal received by the near-field communication chip; a phase-locked loop, configured to generate a first clock signal based on the local clock signal and the first frequency control word; and a phase alignment circuit, configured to perform phase selection on the first clock signal based on the carrier clock signal to obtain a second clock signal, and send the second clock signal to a transmitter circuit.
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公开(公告)号：EP4262114A1
公开(公告)日：2023-10-18
申请号：EP20967922.4
申请日：2020-12-31
发明人： FU, Kai , LI, Zhiping , YU, Zhan
IPC分类号： H04L1/00
摘要： This application relates to the wireless communication field, and discloses a Bluetooth communication method and an apparatus. Before a first data field in a first Bluetooth data frame, a first synchronization code whose at least one of autocorrelation or cross-correlation is better than that of a first access code is inserted, so that a success rate of synchronization detection at a receive end can be improved, and a success rate of data receiving can be further improved.
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公开(公告)号：EP4027548A1
公开(公告)日：2022-07-13
申请号：EP20869258.2
申请日：2020-09-08
发明人： DAI, Shengchen , TONG, Jiajie , YU, Zhan , FU, Kai , LI, Rong , WANG, Jun
IPC分类号： H04L1/00
摘要： This application discloses a polar code segment encoding method, including: 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^ a , and the maximum segment code length is 2^ b ; 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 of each type of segments, where N corresponds to S segments, and a segment code length of an i th segment in the S segments is greater than or equal to a segment code length of an (i+1) th segment in the S segments; determining target information bit lengths of the S segments based on the code rate and segment code lengths of the S segments; and performing polar code encoding on the to-be-encoded information bits based on the target information bit lengths of the S segments. Through implementation of this application, performance of a low-power communication system can be effectively improved when a delay limit of decoding and reporting is met.
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