公开(公告)号：US20180220387A1

公开(公告)日：2018-08-02

申请号：US15933100

申请日：2018-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tong JI ,  Yiling WU ,  Zhe CHEN

IPC: H04W56/00 ,  H04J11/00 ,  H04L27/26 ,  H04W4/70 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04W56/001 ,  H04J11/00 ,  H04J13/00 ,  H04J2011/0096 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2643 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2662 ,  H04L27/2663 ,  H04L27/2666 ,  H04L27/2675 ,  H04W4/70 ,  H04W56/00 ,  H04W72/0453 ,  H04W72/082

Abstract: The present invention relates to the mobile communications field, and in particular, to a synchronization signal sending method. A network device obtains a first signal after performing discrete Fourier transform DFT and orthogonal frequency division multiplexing OFDM modulation, or OFDM modulation on a ZC sequence whose root index is 1; the network device obtains a second signal after performing DFT and OFDM modulation, or OFDM modulation on a conjugate sequence of the ZC sequence whose root index is 1; the network device generates a synchronization signal, where the synchronization signal includes the first signal and the second signal; and the network device sends the synchronization signal to a terminal device. By using this method, when there is a relatively large frequency offset between the terminal device and the network device, an M2M service requirement can still be met.

公开(公告)号：US20250097992A1

公开(公告)日：2025-03-20

申请号：US18969002

申请日：2024-12-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenwan LI ,  Jun CHEN ,  Lei CHEN ,  Bingzhao LI ,  Yiling WU ,  Hantao LI

IPC: H04W74/0833 ,  H04W40/10

Abstract: A communication method and apparatus are provided. The method includes: A network device sends first signaling, indicating a terminal device to initiate random access on a first random access occasion; after receiving the first signaling, if the terminal device cannot complete the random access or data transmission after the random access, for example, stored energy of the terminal device is insufficient, the terminal device may send first indication information to the network device, indicating that a first terminal device cannot complete the random access or data transmission after the random access; and after receiving the first indication information, the network device may send second signaling, indicating the terminal device to initiate random access on a next random access occasion (namely, a second random access occasion) after the first random access occasion.

公开(公告)号：US20250039841A1

公开(公告)日：2025-01-30

申请号：US18911363

申请日：2024-10-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenwan LI ,  Lei CHEN ,  Yiling WU

IPC: H04W68/00 ,  H04W68/02

Abstract: The technology of this application relates to a paging method and an apparatus. A first device sends first signaling used to page a terminal device. The first signaling includes memory information or an identifier of the terminal device, to indicate the to-be-paged terminal device. In addition, the terminal device may further determine a first resource based on the first signaling, to send uplink data by using the first resource. The first device may also receive, on the first resource, the uplink data from the terminal device. The terminal device may determine the first resource based on the first signaling is equivalent to the first device allocating a resource to the terminal device. In this way, steps needing to be performed for data transmission between the terminal device and the first device are reduced.

公开(公告)号：US20240056217A1

公开(公告)日：2024-02-15

申请号：US18495878

申请日：2023-10-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weilin QU ,  Yiling WU ,  Jun CHEN ,  Yujian TANG ,  Mao YAN

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H04L1/0057

Abstract: A signal generation method is disclosed, to enhance an anti-interference capability and a coverage area of a signal. The method includes: A first device obtains a first signal based on transmission information through channel encoding, where the transmission information includes information that the first device needs to send to a second device; the first device generates a second signal based on the first signal through repetition or frequency spread transformation; the first device generates a third signal based on the second signal through linear encoding; and the first device generates a target signal based on the third signal through signal modulation, where the target signal is sent to the second device. Associated devices are also described.

公开(公告)号：US20210328665A1

公开(公告)日：2021-10-21

申请号：US17363990

申请日：2021-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuchen WANG ,  Haifeng YU ,  Yiling WU

IPC: H04B7/26 ,  H04W74/00 ,  H04L5/00 ,  H04L5/14 ,  H04W72/04

Abstract: A communication method in a frequency division duplex system is provided. The method includes a first terminal device that receives first dedicated signaling sent by a network device, and obtains a first configuration message. The first terminal device sends, based on the first configuration message, first information to the network device by using a second transmission frame structure, and receives second information that is sent by the network device by using the second transmission frame structure. The second transmission frame structure has a first fixed delay relative to a first transmission frame structure, and the first transmission frame structure is a frame structure that is used by a second terminal device to send third information to the network device and that is used by the network device to send fourth information to the second terminal device.

公开(公告)号：US20200295915A1

公开(公告)日：2020-09-17

申请号：US16892691

申请日：2020-06-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tong JI ,  Yiling WU ,  Guangwei YU ,  Robert William YOUNG ,  Brian Martin GAFFNEY

IPC: H04L7/04 ,  H04J11/00 ,  H04J13/00 ,  H04W56/00 ,  H04L27/26

Abstract: The present disclosure relates to the field of wireless communications technologies, relates to a signal sending device, a signal receiving device, a symbol timing synchronization method, and a system, and resolves a problem that complexity of symbol timing synchronization performed by a terminal with relatively low crystal oscillator accuracy is high. In a receiving device, a receiving module receives a synchronization signal including a first signal and a second signal. The first signal includes N1 generalized ZC sequences, and the second signal includes N2 generalized ZC sequences. The second signal is used to distinguish different cells or different cell groups. There are at least two generalized ZC sequences with different root indexes in (N1+N2) generalized ZC sequences. A processing module performs a first sliding correlation operation and a second sliding correlation operation on the synchronization signal, and performs symbol timing synchronization according to a relationship between a sliding correlation peak generated when a sliding correlation is performed on the N1 generalized ZC sequences and a sliding correlation peak generated when a sliding correlation is performed on the N2 generalized ZC sequences. This has relatively low implementation complexity, compared with an existing method in which grid search should be performed multiple times to compensate for a relatively large phase rotation.

公开(公告)号：US20190260521A1

公开(公告)日：2019-08-22

申请号：US16402238

申请日：2019-05-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhihu LUO ,  Yiling WU

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: A HARQ-ACK feedback information transmission method includes: obtaining, by a terminal device, downlink HARQ-ACK feedback information for each of a plurality of HARQ processes; and transmitting, by the terminal device, the plurality of pieces of downlink HARQ-ACK feedback information for the plurality of HARQ processes on a same time-frequency resource simultaneously. According to the solution provided in embodiments of this application, the downlink HARQ-ACK feedback information for the plurality of HARQ processes is transmitted on the same time-frequency resource simultaneously.

公开(公告)号：US20180317185A1

公开(公告)日：2018-11-01

申请号：US16029635

申请日：2018-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhe CHEN ,  Zhe JIN ,  Yiling WU ,  Weiliang ZHANG

IPC: H04W56/00

CPC classification number: H04W72/04

Abstract: Embodiments of the present invention provide an information sending method, including: determining, by a base station, first information indicating a first carrier frequency offset, where the first carrier frequency offset is a carrier frequency offset between an actual cell carrier center frequency and a cell carrier center frequency that is obtained by a terminal; and sending, by the base station, the first information to the terminal, where the first information is used to obtain the actual cell carrier center frequency. According to the technical solutions provided in the embodiments of the present invention, quality of communication between the terminal and the base station is effectively improved.

公开(公告)号：US20170005851A1

公开(公告)日：2017-01-05

申请号：US15266794

申请日：2016-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yiling WU ,  Tong JI ,  Zhiqin YU ,  Weiliang ZHANG

IPC: H04L27/26

CPC classification number: H04L27/2692 ,  H04L27/2657

Abstract: The present invention provides a synchronization signal receiving method, including: receiving, by a receive end, a synchronization sequence sent by a transmit end, where the synchronization sequence includes a carrier frequency synchronization sequence, the carrier frequency synchronization sequence is zc(m)=e±jπm(m+1+2q)/L, m=0, 1, . . . , L−1, qεZ, L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±jπm(m+1+2q)/L indicates the (±jπm(m+1+2q)/L)th power of e, and e is a natural constant; and performing, by the receive end, frequency offset estimation according to the received synchronization sequence, to obtain a frequency offset estimation value. With the technical solutions of embodiments of the present invention, accuracy of frequency offset estimation can be improved.

Abstract translation: 本发明提供了一种同步信号接收方法，包括：由接收端接收由发送端发送的同步序列，其中同步序列包括载波频率同步序列，载波频率同步序列为zc（m）= e±jπm（m + 1 + 2q）/ L，m = 0,1。 。 。 ，L-1，qεZ，L表示载波频率同步序列的长度，q表示载波频率同步序列的参数，Z表示整数，e±jπm（m + 1 + 2q）/ L表示 ±jπm（m + 1 + 2q）/ L），e为自然常数; 并且根据接收到的同步序列，通过接收端进行频率偏移估计，以获得频率偏移估计值。 利用本发明的实施例的技术方案，可以提高频率偏移估计的精度。

公开(公告)号：US20160157212A1

公开(公告)日：2016-06-02

申请号：US14991694

申请日：2016-01-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiliang ZHANG ,  Guangwei YU ,  Zhijun LI ,  Yiling WU ,  Jianbing YANG

IPC: H04W72/04

CPC classification number: H04W72/04 ,  H04W16/06 ,  H04W16/14

Abstract: Embodiments of the disclosure provide a communication method and an apparatus thereof. The method includes: generating a first signal; and sending the first signal to a receiver over a first channel, where the first channel is one of multiple channels in a first band for narrowband communication, and at least a part of the first band is located in a guard band of a radio access network RAN. In the embodiments of the disclosure, a spectrum resource of a guard band of a RAN is used to establish a spectrum resource applicable to narrowband communication, thus improving spectrum utilization.

Abstract translation: 本公开的实施例提供了一种通信方法及其装置。 该方法包括：产生第一信号; 以及通过第一信道将第一信号发送到接收机，其中所述第一信道是用于窄带通信的第一频带中的多个信道之一，并且所述第一频带的至少一部分位于无线电接入网络的保护频带 RAN。 在本公开的实施例中，使用RAN的保护频带的频谱资源来建立适用于窄带通信的频谱资源，从而提高频谱利用率。