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公开(公告)号：US20240048155A1
公开(公告)日：2024-02-08
申请号：US18448782
申请日：2023-08-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Liang Ma , Xiaojian Liu , Yuejun Wei , Xin Zeng
CPC classification number: H03M13/1102 , H03M13/616 , H03M13/116 , H03M13/6393 , H03M13/6516 , H03M13/11 , H04L1/00
Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z≥K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.
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公开(公告)号：US11777521B2
公开(公告)日：2023-10-03
申请号：US17742183
申请日：2022-05-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chen Zheng , Liang Ma , Xiaojian Liu , Yuejun Wei , Xin Zeng
CPC classification number: H03M13/1102 , H03M13/11 , H03M13/116 , H03M13/616 , H03M13/6393 , H03M13/6516 , H04L1/00
Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z≥K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.
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公开(公告)号：US11412443B2
公开(公告)日：2022-08-09
申请号：US16978843
申请日：2018-07-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yinqing Jiang , Xiaojian Liu , Bei Dai
Abstract: Embodiments provide a method for searching for a network by a terminal, a terminal, and a storage medium, which reduce network search time. A terminal controls a first wireless communications module to search a first band for a first camping frequency channel number and controls a second wireless communications module to search a second band for a second camping frequency channel number. Therefore, compared with the prior art in which both the first wireless communications module and the second wireless communications module search a full band for a network, the embodiments can accelerate a network search process of the terminal. If the first wireless communications module finds a to-be-camped-on frequency channel number that meets a preset condition, the terminal shares the to-be-camped-on frequency channel number found by the first wireless communications module with the second wireless communications module, thus shortening a network search time of the second wireless communications module.
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公开(公告)号：US20170127371A1
公开(公告)日：2017-05-04
申请号：US15310741
申请日：2014-05-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yinqing Jiang , Hui Jin , Xiaoyan Chen , Xiaojian Liu , Lin Shu , Li Shen
IPC: H04W60/04 , H04W8/18 , H04B1/3816 , H04W8/06
CPC classification number: H04W60/04 , H04B1/3816 , H04W8/06 , H04W8/183
Abstract: A method can be implemented by a user equipment to update RPLMN information. A PLMN identifier is selected from an available PLMN identifier set that includes PLMN identifiers with RPLMN information, HPLMN information, UPLMN information, and OPLMN information separately. A location update request message that carries the PLMN identifier is sent to a mobile switching center. A TMSI reallocation command is acquired from the mobile switching center according to the location update request message. It is determined whether location update acceptance information that is returned by the mobile switching center according to the location update request message is currently acquired. An operation of updating the PLMN identifier to registered public land mobile network RPLMN information is performed when the location update acceptance information is acquired and the operation of updating the PLMN identifier to RPLMN information is skipped when the location update acceptance information is not acquired.
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公开(公告)号：US11463108B2
公开(公告)日：2022-10-04
申请号：US16691281
申请日：2019-11-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Yuejun Wei , Liang Ma , Xiaojian Liu , Xin Zeng
Abstract: This application discloses an information processing method and apparatus, a communications device, and a communications system. The method includes: encoding an input sequence by using a low-density parity-check (LDPC) matrix, to obtain a bit sequence D, where a base matrix of the LDPC matrix is represented as a matrix of m rows and n columns, each column corresponds to a group of Z consecutive bits in the bit sequence D, and n and Z are both integers greater than 0; and obtaining an output bit sequence based on a bit sequence V, where the bit sequence V is obtained by permuting two groups of bits corresponding to at least two parity check columns in the bit sequence D.
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Patent Agency Ranking
公开(公告)号：US11239957B2
公开(公告)日：2022-02-01
申请号：US16665750
申请日：2019-10-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liang Ma , Chen Zheng , Xiaojian Liu , Yuejun Wei
Abstract: This application provides a data processing method and a data processing apparatus. The data processing method includes: determining C code blocks, where C is a positive integer; and dividing the C code blocks into K code block groups, where an absolute value ΔC of a difference between quantities of code blocks included in any two of the K code block groups is less than or equal to a first threshold, and K is a positive integer. The data processing method and the data processing apparatus provided in this application help lower a bit error rate.
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公开(公告)号：US10938514B2
公开(公告)日：2021-03-02
申请号：US16446237
申请日：2019-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaojian Liu , Yuejun Wei , Xin Zeng
Abstract: A data transmission method, a data sending device, and a data receiving device are provided. The method includes: encoding, by a data sending device, information data by using a low-density parity-check (LDPC) code matrix, to obtain a bit sequence, where the bit sequence includes a first bit sequence, and the first bit sequence includes at least one information bit in the bit sequence; interleaving, the first bit sequence to obtain a first interleaved bit sequence; performing, modulation based on the first interleaved bit sequence to obtain a sending signal, and sending the sending signal. The method also includes: demodulating, by a data receiving device, a receiving signal to obtain a soft value sequence; and de-interleaving, the soft value sequence, to obtain a soft value sequence of a first bit sequence. This can improve a capability of an LDPC code resisting burst interference.
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公开(公告)号：US20200220657A1
公开(公告)日：2020-07-09
申请号：US16821986
申请日：2020-03-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Liang Ma , Jie Xiong , Xin Zeng , Xiaojian Liu , Yuejun Wei
Abstract: This application discloses an information processing method. A communication device obtains an input sequence. The input sequence has a quantity B of bits. The communication devices transforms the input sequence into one or more code blocks. The communication device encodes each of the code blocks, to obtain one or more encoded code blocks. Each of the code blocks has a code block length less than or equal to a maximum code block length. Each of the code blocks includes a segment of the input sequence, one or more cyclic redundancy check (CRC) bits corresponding to the segment of the input sequence, and one or more filler bits. The encoded code blocks can meet various channel coding requirements.
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公开(公告)号：US20190327667A1
公开(公告)日：2019-10-24
申请号：US16341594
申请日：2017-04-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaojian Liu , Yingqing Jiang , Bei Dai , Zhe Li , Haoping Guo
Abstract: A network search display method for a terminal device and the terminal device, where the method includes obtaining, by the terminal device, a network search instruction instructing the terminal device to start searching for a network, searching, by the terminal device, a network frequency band in a first network standard for an available network according to the network search instruction, and displaying, by the terminal device to the user, the available network found in the network frequency band in the first network standard. Hence, the method and the terminal device improve user experience.
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公开(公告)号：US10257751B2
公开(公告)日：2019-04-09
申请号：US15316059
申请日：2014-07-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yinqing Jiang , Xiaoyan Chen , Xiaojian Liu , Li Shen
Abstract: Embodiments of the present invention relate to the field of wireless communications technologies, and provide a switching method. The method specifically includes: when user equipment is in idle mode, acquiring a 2G/3G base station candidate set; when initiating a voice service, sending a CSFB request message to an LTE base station; receiving a standard and a frequency of a target 2G/3G base station that are sent by the LTE base station to the user equipment; determining, according to the standard and the frequency of the target 2G/3G base station, whether the 2G/3G base station candidate set includes the target 2G/3G base station; and if the 2G/3G base station candidate set includes the target 2G/3G base station, switching, from the LTE base station to the target 2G/3G base station according to the standard and the frequency of the target 2G/3G base station.
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