195 results about "Covering code" patented technology

A communication device (12) transmits signaling (20) indicating that the communication device (12) is capable of demodulating a data channel (16) using a demodulation reference signal (18) scheduled without a scheduling restriction on a number of resource elements, resource blocks, or resource block groups to which the demodulation reference signal (18) is mapped, e.g., the scheduling restriction restricts the number of resource elements, resource blocks, or resource block groups to which the demodulation reference signal (18) is mapped to being a multiple of a length of a frequency-domain orthogonal cover code applied to the demodulation reference signal (18). Depending on whether the communication device (12) is so capable, the demodulation reference signal (18) is scheduled with or without applying the scheduling restriction.

The invention discloses an invalid code automatic elimination method and device, a medium and a product, and the method comprises the steps: carrying out compiling analysis processing on each program file in a to-be-processed target program item, generating a syntax tree model, and testing the compiled program file to obtain a program test result; unused variables in all the variables are identified through a syntax tree model, and uncovered code lines are positioned in combination with a test result; analyzing logic judgment conditions of uncovered code lines based on the syntax tree structure, and judging the code lines which cannot be triggered as unreachable codes; unused variables and unreachable codes in the program files are removed, new program items are obtained, and when the new program items are correctly compiled and executed, the new program items are used for replacing the target program items. Program redundancy is reduced, and execution efficiency is improved.

A user equipment (UE) configured for operation in a 5th Generation New Radio (5G NR) network may decode signaling to configure the UE with one or more orthogonal cover code (OCC) sequences. The UE may apply one of the OCC sequences to physical uplink shared channel (PUSCH) repetition of a PUSCH transmission. For inter-slot OCC PUSCH repetition, values of an OCC sequence are applied across slots of the PUSCH repetition. The UE may apply a first value of an OCC sequence of length two to a first repetition of a PUSCH transmission in a first slot and apply a second value of the OCC sequence of length two to a second repetition of the PUSCH transmission in a second slot.

A method (1500) is performed by a User Equipment, UE, (1912, 2000) for performing an uplink transmission that is spread using an Orthogonal Cover Code, OCC, in a Non-Terrestrial Network, NTN. The method includes transmitting (1502) an uplink transmission using Narrowband Physical Uplink Shared Channel, NPUSCH, Format1 with 3.75 kHz subcarrier spacing, SCS. The uplink transmission includes at least one data symbol, at least one Demodulation Reference Signal, DMRS, symbol, and at least one guard period. The location of the guard period within each of the slots comprising the uplink transmission is preserved after OCC spreading is applied to the uplink transmission.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling that indicates an orthogonal cover coding (OCC) codeword assigned to the UE and an OCC factor. The UE may receive an uplink grant that allocates, to the UE, uplink resources over a series of uplink time units for a quantity of repetitions of a transmission block. The UE may subsequently use the assigned OCC codeword to transmit each repetition of the quantity of repetitions of the transmission block over a quantity of uplink time units of the series of uplink time units, where a function of the quantity of uplink time units and the quantity of repetitions satisfies a threshold, and where the quantity of uplink time units is greater than or equal to the OCC factor.

In the NB-IoT NTN deployment, the coverage area can be as large as hundreds of thousand square kilometers. In such huge geography area, the number of IoT devices that need to access the satellite will be massive. In another hand, the UL capability of NB-IoT is severely suppressed by large repetition number due to the limited link budget. To enlarge the system capacity, multiplexing of UEs by usage of orthogonal cover codes (OCC) for NPUSCH format 1 and NPRACH is proposed in 3GPP as a Release 19 IoT NTN work item. The Invention incudes various methods of overlaying the OCC code to the NPUSCH and NPRACH; various procedures on support OCC for NPRACH and NPUSCH such as random access and connection establishment; other related 3GPP specification impact.

A UE that includes one or more non-transitory computer-readable media storing one or more computer-executable instructions for determining the number of coded modulation symbols for Uplink Control Information (UCI) in a Physical Uplink Shared Channel (PUSCH) transmission and at least one processor coupled to the non-transitory computer-readable media is provided. The processor is configured to execute the one or more instructions to cause the UE to determine that an Orthogonal Cover Code (OCC) is applied to the PUSCH transmission based on an indication received from a base station (BS) and determine the number of coded modulation symbols for the UCI based on the determination that the OCC is applied to the PUSCH transmission and a parameter received from the BS.

Sounding Reference Signal (SRS) capacity is increased by introducing Time Domain Orthogonal Cover Codes (TD-OCC) over multiple SRS repetitions. A UE may indicate to the network a capability to support TD-OCC for SRS. In response, the network provides configurations controlling the content and format of the SRS. An SRS resource configuration may include at least an SRS Repetition Factor≥2. A TD-OCC configuration may include at least one of a TD-OCC length and a TD-OCC code. The UE C indication may indicate a maximum TD-OCC length that is supported for an SRS resource; all TD-OCC lengths that are supported; that supported TD-OCC lengths are 2n for positive integers n; that different TD-OCC codes are supported for different SRS ports of an SRS resource; or that the TD-OCC length maybe different than the SRS Repetition Factor. Techniques are disclosed herein for implementing all of these variations.

Disclosed are methods, systems, and computer-readable medium to perform operations including: generating a mapping pattern that comprises a length-4 frequency division orthogonal cover code (FD-OCC4), the mapping pattern for mapping demodulation reference signals (DMRS) in frequency to a plurality of resource elements in at least one orthogonal frequency-division multiplexing (OFDM) symbol, wherein the DMRS are associated with a plurality of DMRS ports; mapping, using the FD-OCC4, the DMRS to the plurality of resource elements in the at least one OFDM symbol; and transmitting a transmission comprising the at least one OFDM symbol.

A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration of a demodulation reference signal (DMRS) of a shared channel, and a control section that applies a frequency domain (FD)-orthogonal cover code (OCC) having a length of 4 or 3 to the DMRS, based on the configuration. According to one aspect of the present disclosure, an appropriate number of DMRS ports can be used.

A method is performed by a user equipment (UE) of a plurality of UEs that receive a plurality of orthogonal cover codes (OCC) sequences for concurrently transmitting to a network node on the same time-frequency resources. The method comprises receiving an orthogonal cover codes (OCC) sequence of the plurality of OCC sequences. The plurality of OCC sequences are assigned to respective ones of the plurality of UEs. The method further comprises transmitting, through a narrowband physical uplink shared channel (NPUSCH) format 1, to the network node on the same time-frequency resources shared by other UEs of the plurality of UEs. The plurality of UEs concurrently transmitting through the narrowband physical uplink for a single-tone or multi-tone transmission having a first subcarrier spacing (SCS). Appliance of the plurality of OCC sequences is with respect to one or more OFDM symbols, one or more time-domain slots, or a time-domain resource unit.

The invention discloses a test case obtaining method and device, equipment and a medium. The method comprises the following steps: generating a test case feature vector and a code branch condition coverage feature vector according to a historically generated code coverage report, and splicing the test case feature vector and the code branch condition coverage feature vector to generate a transaction set; generating a plurality of multi-item sets according to a preset support degree and the transaction set; generating a first result set and a second result set according to a preset confidence coefficient and each multi-item set; and when the incremental code coverage report is generated each time, determining a plurality of target test case feature vectors in the first result set or the second result set according to the incremental code coverage report, and obtaining a test case according to the target test case feature vectors. By adopting the technical scheme, the supplementary test case can be intelligently and accurately provided for the uncovered code, the test efficiency and quality are improved, and the cost is saved.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use cover coding for sounding reference signal (SRS) resources for performing antenna switching. The UE may receive a configuration for a reference signal resource set for transmitting a reference signal for antenna switching, the configuration including an indication of a type of time division cover coding for repetitions of the reference signal and an indication of a type of frequency hopping. The UE may determine a reference signal resource for transmission of the reference signal based on the configuration and the type of frequency hopping. The UE may then transmit a set of repetitions of the reference signal over the determined reference signal resource according to the type of time division cover coding.

The invention discloses a method and a system for evaluating a test coverage rate based on a Java call link, and relates to the field of software testing. The method comprises the following steps: identifying a difference function according to a first comparison result, and constructing a call chain tree structure by taking the difference function as a root node based on a code call relation graph; analyzing the difference function to obtain a direct code change line of the difference function, based on a call chain tree structure, identifying a related code line on a call chain where each call point is located as a call point code line, and summarizing the direct code change line and the call point code line; and analyzing the code coverage rate data to obtain an actually covered code line, comparing the to-be-tested code line with the actually covered code line, determining coverage rate index data based on a call chain according to a second comparison result, and determining a test coverage rate evaluation result according to the coverage rate index data. The test coverage rate can be evaluated more comprehensively and accurately.

The invention provides a communication method and a communication device. The method comprises the following steps: acquiring the length of a first orthogonal cover code (OCC) sequence and the index of the first OCC sequence; determining at least one first subcarrier according to the length of the first OCC sequence and the index of the first OCC sequence; sending first data on a first time unit through the at least one first subcarrier, wherein the first data is obtained by performing OCC coding on second data according to the first OCC sequence; and sending a demodulation reference signal (DMRS) sequence on a second time unit through at least one second subcarrier, the at least one second subcarrier belonging to the at least one first subcarrier, and the DMRS sequence being used for demodulating the first data. According to the method, the accuracy of channel estimation can be improved, and the demodulation performance of data is improved.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability of the UE to support orthogonal cover code (OCC) multiplexing. The UE may receive, based on the indication, control signaling indicating a multiplexing order parameter, an OCC code word that the UE is to apply for OCC multiplexing, and a quantity of units included in each cluster in which the UE is to apply OCC multiplexing. The UE may transmit a plurality of OCC encoded sequences over a plurality of clusters, the OCC code word applied to a plurality of sequences to generate the plurality of OCC encoded sequences in accordance with the multiplexing order parameter and the quantity of units.

Provided in the present application are a method and apparatus for uplink capacity enhancement in an NR NTN system. The method comprises: receiving at least one of the following pieces of information: first information, which is used for determining an orthogonal cover code (OCC) scheme for a physical uplink shared channel (PUSCH); second information, which is used for determining an OCC sequence table used for the PUSCH; and third information, which is used for determining an OCC sequence from the OCC sequence table; and sending the PUSCH.

Embodiments herein provide sounding reference signals (SRS) enhancements to support flexible mapping of multiple SRS ports to multiple symbols. In some embodiments, a network node may send, to a user equipment (UE), a sounding reference signal (SRS) configuration that maps multiple SRS ports across multiple symbols using a time domain orthogonal cover code (TD-OCC) codebook. The UE may transmit a SRS from each SRS port using the multiple symbols. The network node may provide feedback based on the SRS from each SRS port.

Methods, systems, and devices for wireless communications are described. A UE may select coded information bits based on an orthogonal cover code (OCC) multiplexing order and / or a type of OCC multiplexing. For example, the UE may receive a control message that indicates the OCC multiplexing order and / or the type of OCC multiplexing. The UE may select encoded bits from a buffer for an uplink transmission, where a quantity of encoded bits selected for each slot of the uplink transmission may be scaled based on a total quantity of bits per slot and the OCC multiplexing order. Additionally, or alternatively, the UE may scale the bit selection based on a unit (e.g., a slot, cluster, symbol, resource element) of the transmission, where, for each unit of a set of units, the UE may select bits from the buffer a quantity of times that corresponds to the OCC multiplexing order.

Provided are a communication method and a communication device, the method comprising: respectively transmitting first data on at least one first segment of a time domain resource, the first data comprising data obtained after orthogonal cover code (OCC) coding; second data are transmitted on partial resources of at least one second segment of the time domain resource, the partial resources of the second segment are not overlapped with the first segment, and the partial resources of the second segment do not comprise first intervals located at the head and / or the tail of the second segment respectively; the first interval is the largest interval in the intervals between the adjacent segments corresponding to the at least one terminal device. According to the method, the system capacity of the segmented scene is improved by adopting a multi-user multiplexing mode.

This terminal includes: a control unit for determining at least one of an intra-symbol orthogonal cover code (OCC) spreading in the frequency domain and an inter-symbol OCC spreading in the time domain, applied to a physical uplink shared channel (PUSCH) modulated by discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or OFDM; and a transmission unit for transmitting the PUSCH to which the OCC is applied to a base station. The control unit multiplexes uplink control information (UCI) before executing spreading for OCC application.

Disclosed are a method and apparatus for wireless communication. One example method includes: determining a first orthogonal cover code (OCC) sequence; determining, based on first information, a start time-domain position for an uplink transmission based on the first OCC sequence; and performing, an uplink transmission by using the first OCC sequence, wherein the first OCC sequence is an OCC sequence in an OCC sequence set that is received from a network device, and the first information is associated with timing of at least one of the OCC sequence set or the uplink transmission.

Example embodiments of the present disclosure relate to an effective mechanism for handing the scenario of discontinuous coverage. In this solution, a terminal device receives a demodulation reference signal (DMRS) indication indicating at least one of at least one DMRS port index or a first length of frequency domain orthogonal cover code (FD-OCC) to be used by the terminal device; and determining, based on the DMRS indication, the number of code domain multiplexing (CDM) groups without data is a default value if at least one of the following: the first length of FD-OCC is longer than a second FD-OCC length, at least one of the at least one DMRS port index is comprised in a first port index set, or at least one of the at least one DMRS port index corresponds to the first length of FD-OCC. In this way, in signalling overhead is reduced.

Disclosed in the embodiments of the present disclosure are uplink communication methods and an apparatus. A method comprises: determining a time-domain position or a frequency-domain position at which a terminal sends a demodulation reference signal (DMRS); determining a sequence value of the DMRS sent at each time-domain position or frequency-domain position; and on a physical uplink shared channel (PUSCH) with orthogonal cover code (OCC)-based multi-user multiplexing, sending the DMRS to a network device. Therefore, the terminal can process the sequence value of a DMRS corresponding to a time-domain position which is originally configured for DMRS transmission but is silenced due to OCC multiplexing, thus ensuring DMRS orthogonality between different users performing OCC multi-user multiplexing, reducing interference between users, improving the accuracy of channel estimation, effectively improving the communication efficiency of systems, and improving spectrum and resource utilization rates.