Abstract: Embodiments of the present disclosure provide a method for forming a hole structure in a semiconductor device. The method includes forming a first etch mask over a stack structure, and removing a portion of the stack structure exposed by the first etch mask. The first etch mask may have a first mask opening with a first lateral dimension. The method may also include forming a second etch mask from the first etch mask. The second etch mask may have a second mask opening with a second lateral dimension that is greater than the first lateral dimension. The method may further include removing another portion of the stack structure exposed by the second etch mask to form the hole structure having a first hole portion and a second hole portion connected to and over the first hole portion.

Abstract: This application discloses an information processing method, an apparatus, a communication device, and a communication system. The communication device is configured to determine a redundancy version transmission sequence, where the redundancy version transmission sequence is used to indicate a sending sequence of a plurality of redundancy versions; determine a transmission number; and obtain a redundancy version from a buffer sequence based on the redundancy version transmission sequence and the transmission number and send the redundancy version. The communication device may be applied to a communication system supporting a plurality of redundancy version transmission sequences, for example, a 5th generation (5G) communication system. Because the redundancy version transmission sequence is determined before data transmission, communication efficiency is improved, and HARQ performance is improved.

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.

Abstract: Embodiments of this application relate to communication technologies and provide a method for transmitting or retransmitting data in a transport block. The transport block includes one or more code block groups, and each code block group includes one or more code blocks. A data processing device determines a code block group in the transport block that needs to be transmitted. Each code block in the code block group is processed by the data processing device to obtain a bit sequence. The data processing device transmits one or more bit sequences obtained by processing one or more code blocks in the code block group. The method and the apparatus provided in this application help reduce waste of air interface resources.

Abstract: Embodiments of this application disclose a communication method and a communications apparatus. The method includes: determining an encoding matrix type of a first sequence based on a modulation and encoding scheme MCS index, where the first sequence is obtained after code block segmentation is performed on a second sequence, a length of the second sequence is related to the MCS index, and a length of the first sequence is less than or equal to a first threshold; and encoding the first sequence based on the encoding matrix corresponding to the encoding matrix type. In the foregoing solution, the encoding matrix type can be properly selected for encoding.

Abstract: A lighting module used in a motor vehicle. The lighting module includes a housing and a light source assembly provided in the housing, wherein at least one thermal baffle is provided beside the light source assembly, and a thermal resistant layer is provided on at least one portion of the thermal baffle. The present utility model also provides a motor vehicle including the lighting module. The lighting module and the motor vehicle of the present utility model can reduce high temperature damage, and can have a low cost and a compact structure.

Abstract: Obtaining, by a source cell, a key retention policy of a terminal device, where the source cell and the terminal device use a first key to communicate with each other; determining, by the source cell according to the key retention policy of the terminal device and a key retention policy of the source cell, whether the terminal device and a target cell use the first key to communicate with each other; and sending, by the source cell, a handover request message to the target cell, where the handover request message is used to request to hand over the terminal device from the source cell to the target cell, the handover request message includes first indication information, and the first indication information is used to indicate whether the terminal device and the target cell use the first key to communicate with each other.

Abstract: This application discloses an information processing method. A communication device obtains an input sequence. The input sequence has a quantity B of information bits. The communication devices transforms the input sequence into one or more code blocks. The communication device encodes each of the code blocks individually, 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 and may include one or more cyclic redundancy check (CRC) bits corresponding to the segment of the input sequence. The encoded code blocks can meet various channel coding requirements.

Abstract: According to embodiments, a derived cache that is derived from a first instance of particular data is used to speed up queries and other operations over a second instance of the particular data. Traditionally, a DBMS generates and uses derived cache data only for the database data from which the derived data was derived. However, according to embodiments, derived cache data associated with a first instance of database data is relocated to the location of a second, newly created, instance of the database data. Since the derived cache data is derived from an identical copy of the database data, the cache data derived for the first instance can successfully be used to speed up applications running over the second instance of the database data.

Abstract: This application provides a data transmission method and apparatus, to improve accuracy of determining a transport block size and help improve reliability of data transmission. The method includes: determining, by a communications device, a target transport block size based on configuration information, where the configuration information corresponds to a first bandwidth resource, and the configuration information includes at least one of the following: at least one resource element quantity and a modulation and coding scheme MCS table, and the first bandwidth resource is some of resources in a system bandwidth; and transmitting, by the communications device, data on the first bandwidth resource based on the target transport block size.

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.

Abstract: The present disclosure relates to a battery module. The battery module includes at least two battery units arranged in a stack. Each of at least two battery units includes: a support; at least one pouch-type battery; and a thermal-dissipation protection case. The thermal-dissipation protection case is connected to the support to form an accommodating space, and the at least one pouch-type battery is accommodated in the accommodating space. At least one of the at least two battery units includes an exposure area exposing the at least one pouch-type battery, and the thermal-dissipation protection case of a battery unit adjacent to the at least one of the at least two battery units is in contact with the at least one pouch-type battery through the exposure area.

Abstract: This application provides a data transmission method, a base station, and a terminal device. The method includes: determining, by a base station, a target base graph in N Raptor-like low-density parity-check (LDPC) base graphs; and sending, by the base station, indication information to a terminal device, where the indication information is used to indicate the terminal device to use the target base graph to perform LDPC encoding and decoding. Based on the foregoing technical solution, the base station may determine a target base graph in a plurality of Raptor-like LDPC base graphs that may be used to perform LDPC encoding and decoding, and indicate the target base graph to the terminal device. Further, for one code rate or one code length, the base station may select different base graphs as required.

Abstract: The present disclosure relates to information processing methods and apparatus, communications devices, and communications systems. One example method includes adding redundancy check bits to a bit sequence A to obtain a bit sequence C, performing cyclic shift on the bit sequence C based on a shift t and a lifting factor z to obtain a bit sequence Ct, where t is an integer greater than or equal to 0, and the shift t is obtained based on second information, and performing low-density parity-check (LDPC) encoding on the bit sequence Ct to obtain a bit sequence Dt.

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.

Abstract: Embodiments of the present invention disclose an information processing method and apparatus, and a device. The method includes: if Rreal is greater than or equal to Rmin, determining, based on a maximum code block length Kmax of an LDPC (low-density parity-check code) code, a quantity C of code blocks into which a transport block is to be segmented, where Rreal is a largest one among an encoding code rate of the transport block, a code rate limit of the transport block, and a minimum code rate of the LDPC code, and Rmin is a minimum code rate corresponding to the maximum code block length of the LDPC code, or a larger one between a minimum code rate corresponding to the maximum code block length of the LDPC code and a code rate limit of the maximum code block length of the LDPC code.

Abstract: A communication method is provided, including: obtaining a to-be-segmented first bit sequence, where a quantity of bits in the first bit sequence is B, and a quantity of bits that can be carried by a physical resource corresponding to the first bit sequence is N1; determining, based on N1 and a parameter L, a quantity C of bit sequences obtained by segmenting the first bit sequence, where a value of L is equal to (B+B1)/Rmin,Kmax, Rmin,Kmax is a minimum bit rate corresponding to an available maximum code block length Kmax, and B1 is an integer greater than or equal to 0; and segmenting the first bit sequence into C segmented bit sequences. Based on the method, a proper code block segmentation scheme can be provided.

Abstract: A chassis includes a frame and a fixing bracket for fixing an expansion card to the frame. The frame defines at least one card hole and includes a side hook. The fixing bracket includes a bracket body, at least one rotating hook fixed to the bracket body and a movable hook fixed to the bracket body. The rotating hook and the movable hook are not in the same plane. When the at least rotating hook is inserted into the at least one card hole and the bracket body is rotated in a first direction to a predetermined position, the rotating hook is locked in the card hole, and the movable hook is hooked on the side hook to make the bracket body fix an expansion card to the frame.

Abstract: Embodiments of this application provide a communications method and apparatus. The method includes: obtaining an input sequence for rate matching, wherein the input sequence is a retransmission sequence corresponding to a transport block, the input sequence comprises M code block groups, a value of M is less than a quantity of code block groups obtained after the transport block is segmented, and the M code block groups comprise Ct code blocks; and performing rate matching on the Ct code blocks, wherein a length of a rate matching output sequence of of each of the Ct code blocks satisfies the following conditions: when j?Ct???1, E=NL·Qm·?G?/Ct?; when j>Ct???1, E=NL·Qm·?G?/Ct?. The method may be applicable to a system in which transmission is performed based on a code block group, and resources are fully used as many as possible, thereby improving performance.

Abstract: An information processing method, an apparatus, a communications device, and a communications system are provided. The communications device is configured to: obtain a starting position in a buffer sequence W for an output bit sequence, and determine the output bit sequence from the buffer sequence W based on the starting position, where a value of the starting position is one element in {p0, p1, p2, . . . , pkmax?1}, 0?k<kmax, 0?pk<NCB, pkis an integer, k is an integer, NCB is a length of the buffer sequence W, kmax is an integer greater than or equal to 4, and there are two or more different neighboring intervals in {p0, p1, p2, . . . , pkmax?1}. A bit sequence for initial transmission or retransmission is properly determined, so that decoding performance of a communications device on a receive end after receiving the bit sequence is improved, a decoding success rate is enhanced, and a quantity of retransmission times is further reduced.