Abstract: This application provides a method for determining a time-domain resource used for grant-free transmission. The method includes: obtaining, by a terminal device, a first time-domain period and a second time-domain period of grant-free transmission resources, where a size of the first time-domain period is P1 time units, a size of the second time-domain period is P2 time units, and P1 is greater than or equal to P2; obtaining, by the terminal device, a quantity k of grant-free transmission resources in the first time-domain period; and determining, by the terminal device based on the first time-domain period, the second time-domain period, and the quantity k of grant-free transmission resources in the first time-domain period, an index of a time unit in which a grant-free transmission resource used for grant-free transmission is located. In this way, grant-free transmission resources configured for the terminal device in two adjacent periods do not overlap.

Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax, polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K?N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.

Abstract: An bracket assembly comprises a bracket for attaching a target to a rack, wherein the bracket comprises a first mounting portion for holding the bracket on the target and a second mounting portion for holding the bracket on a rack frame of the rack, wherein the first mounting portion has one or more openings for receiving penetrating fasteners, and the second mounting portion has one or more aligned studs for being engaged to the keyholes in the rack frame.

Abstract: This application relates to the mobile communications field, and in particular, to a data processing technology in a wireless communications system. A data processing method includes: generating, by a transmitting device based on a stream of bits, one layer of modulation symbol sequence that includes N modulation vectors, any modulation vector Ai includes U modulation symbols, U?2, N?i?1, and N is a positive integer; and processing, by the transmitting device, the modulation vector Ai using a matrix Bi to generate a modulation matrix yi, each modulation matrix includes T elements in a first dimension, T is a quantity of space domain resources, T?2, and the modulation matrix yi is used to map the stream of bits stream onto the T space domain resources. According to the solutions provided in this application, space diversity can be implemented in code domain, so that transmission reliability is improved.

Abstract: Various embodiments provide an interleaving method, to improve error correction performance of a polar code. In these embodiments, a first bit sequence is obtained. The first bit sequence includes L number of bits, and L is a positive integer. The L number of bits are then written into an interleaving matrix according to a preset write rule. The interleaving matrix includes C rows and R number of columns. C and R are positive integers. The L number of bits can be read from the interleaving matrix according to a preset read rule to obtain a second bit sequence. The second bit sequence includes L number of bits; and sending the second bit sequence.

Abstract: Embodiments of this application provide a method for coding in a wireless communication network. A communication device interleave a first bit sequence to obtain a first interleaved sequence having sequence number starting with a sequence number of 0, wherein the first bit sequence comprises bits for indicating timing, wherein the bits for indicating timing comprises a set of bits for indicating synchronization signal block index (SSBI); wherein the set of bits for indicating SSBI are placed in positions indicated by sequence numbers of 2, 3 and 5 in the first interleaved sequence. The devices add d first CRC bits on the first interleaved sequence to obtain a second bit sequence, interleave on the second bit sequence according to an interleave pattern to obtain a second interleaved sequence, and polar encode the second interleaved sequence to obtain the encoded sequence.

Abstract: This application relates to the field of wireless communications technologies, and discloses a polar code encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the sequence numbers of the N polarized channels are arranged in the first sequence based on reliability of the N polarized channels, K is a positive integer, N is a mother code length of a polar code, N is a positive integer power of 2, and K?N; selecting sequence numbers of K polarized channels from the first sequence in descending order of reliability; and placing the to-be-encoded bits based on the selected sequence numbers of the K polarized channels, and performing polar code encoding on the to-be-encoded bits.

Abstract: A processor is configured to map at least two synchronisation signal sequences to a respective set of resource elements of an OFDM symbol, wherein there is at least one resource element between each pair of adjacent sets of resource elements.

Abstract: This application relates to the field of communications technologies, and discloses an interleaving method, a deinterleaving method, and an apparatus, to improve randomicity of polar code interleaving. The method is: obtaining a to-be-interleaved bit sequence, where the to-be-interleaved bit sequence includes L, subsequences, the L subsequences include S subsequence groups, the S subsequence groups include at least a first subsequence group and a second subsequence group, the first subsequence group includes at least two subsequences, the second subsequence group includes at least one subsequence, and L is a positive integer greater than 1; and interleaving the subsequences in the first subsequence group in a first interleaving manner, and skipping interleaving the subsequence in the second subsequence group or interleaving the subsequence in the second subsequence group in a second interleaving manner.

Abstract: The present disclosure relates to polar code encoding methods and apparatus. One example method includes obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the sequence numbers of the N polarized channels are arranged in the first sequence based on reliability of the N polarized channels, K is a positive integer, N is a mother code length of a polar code, N is a positive integer power of 2, and K?N, selecting sequence numbers of K polarized channels from the first sequence in descending order of reliability, placing the K to-be-encoded bits based on the selected sequence numbers of the K polarized channels, and performing polar code encoding on the K to-be-encoded bits.

Abstract: A data processing method and a data processing apparatus are provided to reduce a bit error rate of a wireless communications system and improve transmission performance of the wireless communications system. The method includes: mapping L to-be-sent bits to L bit locations included in at least one modulation symbol, where the L to-be-sent bits include at least one bit field, a bit in a bit field having a high priority is preferentially mapped to a bit location that is of the at least one modulation symbol and that has a high reliability level, the at least one bit field is at least one of an information bit field, a first parity bit field, and a second parity bit field; and outputting the at least one modulation symbol.

Abstract: This application provides a method for communicating a modulation and coding scheme (MCS). A terminal device obtains a modulation order, a code rate, or a spectral efficiency, determines an index of a reference MCS from a mapping table based on the obtained modulation order, code rate, or spectral efficiency, and reports the index of the reference MCS to a network device. The mapping table includes one or more mapping relationships between an MCS index and a modulation order, a code rate, or a spectral efficiency. The terminal device may process uplink or downlink data based on the determined MCS, thereby improving data transmission reliability.

Abstract: The application provides manner for communicating channel state information (CSI) in a communication network. A preset length is used for equalizing lengths of CSI to be reported. The preset length is determined based on a quantity of CSI-reference signal (RS) ports. A communication device determines whether a total length of one or more indication information items to be included in the CSI is less than the preset length. If the total length of the one or more indication information items to be included in the CSI is less than the preset length, the communication device adds one or more padding bits, to obtain a CSI bit sequence including the one or more indication information items and the one or more padding bits. A total length of the CSI bit sequence is consistent with the preset length. The communication device then outputs the CSI bit sequence.

Abstract: Embodiments of the present invention disclose an encoding method. The method includes: obtaining a corresponding index value from an index module based on values in Z to-be-encoded bits that are obtained and a state space value in a state space module, performing an operation based on the index value and the state space value to obtain a new state space value, encoding the Z to-be-encoded bits that are obtained, and obtaining a value from the new state space value and assigning the value to an auxiliary bit.

Abstract: This application provides a data transmission method and a related device. The method includes: when there is first data that needs to be sent in a current slot, determining grant-free resources corresponding to the current slot; determining a first HARQ process corresponding to a first grant-free resource in the grant-free resources; and sending, in the current slot, the first data to a second device on the first grant-free resource by using the first HARQ process. In this way, a data transmission latency can be reduced.

Abstract: Methods and systems for dynamically activate and deactivate an allocated resource for a UE to make grant-free uplink transmission are provided. In one embodiment, a user equipment (UE) receives a Radio Resource Control (RRC) signal. The RRC signal specifies grant-free (GF) configuration information. The GF configuration information comprises an activation field and at least one other GF resource configuration field. The activation field indicates whether the UE may perform GF uplink (UL) transmissions without waiting for a downlink control information (DCI) message. Then, the UE performs a GF UL transmission in accordance with the GF configuration information in the RRC signal.

Abstract: A first Control Node (CNd) and a method therein, for selecting a serving CNd for a User Node (UNd) by communication with at least a second CNd. The first CNd is configured to receive an uplink beacon measurement report comprising at least one measurement of an UNd uplink beacon, from at least one Access Node (ANd) controlled by the first CNd. The first CNd is further configured to preliminarily select a serving CNd for the UNd, based on the received uplink beacon measurement report concerning the UNd; confirm the preliminarily selected serving CNd by communication with the second CNd; and, select serving CNd for the UNd when the preliminarily selected serving CNd is confirmed by the second CNd.

Abstract: A data transmission method and apparatus for determining a transport block size, the method including obtaining, by a first device, a first parameter, where the first parameter is used to indicate a quantity of resource elements included in a resource mapping unit, determining, by the first device, a first transport block size based on the first parameter, and transmitting, by the first device, data based on the first transport block size.