Abstract: Systems and methods are described for adjusting planar geometry derived from point cloud data associated with a building object by identifying major aspects like vertices and edges of the underlying structure within the point cloud and adjusting an average planar fit for simplified geometries created from the point cloud. Combining the planar geometry or point cloud with orthogonal or street level views improves accuracy and use cases of the planar geometry.

Abstract: Disclosed in the present application are a method and device for determining a check matrix, as well as a computer storage medium, which are configured to provide a structural solution for a high-throughput low-delay low-density parity check (LDPC) check matrix suitable for a 5G system. A method for determining a check matrix as provided in an embodiment of the present application comprises: determining a base graph of a low-density parity check code LDPC matrix, and according to the base graph of the LDPC matrix, determining a check matrix of the LDPC.

Abstract: The present application is for use in reducing the overhead of transmitting beam information between a transmitting end and a receiving end. Disclosed are a method for indicating and determining beam information, a device, and a communication system. The method provided in the present application for indicating beam information comprises: a transmitting end determines a first transmission beam that needs to be used for transmission with a receiving end; the transmitting end determines, on the basis of first mapping relations between beam pair (BPL) identifiers and transmission beams, a first BPL identifier corresponding to the first transmission beam, where the receiving end is provided with second mapping relations between the BPL identifiers and reception beams; the transmitting end transmits the first BPL identifier to the receiving end; and the transmitting end uses the first transmission beam to transmit a signal to the receiving end.

Abstract: The present application relates to the technical field of wireless communication, and particularly relates to a channel encoding method and device, for use to solve the problem that at present, there is no physical broadcast channel polar encoding method in a 5G scene. Embodiments of the present application relate to determining a polar mother code length according to transmission resources of a channel; performing polar encoding, according to the polar mother code length, on data needing to be transmitted over the channel to obtain target encoding data; processing the target encoding data according to the length of an actual bearer of the transmission resources; and determining, according to the processed target encoding data, encoding data needing to be transmitted over the channel.

Abstract: A method and a device of selecting a base graph of a low-density parity-check code are provided. The method includes: acquiring a data information length and a channel coding rate of to-be-encoded data; determining a target base graph selection strategy according to the data information length and an information length range of a base graph; determining a target base graph for the to-be-encoded data according to the target base graph selection strategy and the channel coding rate.

Abstract: The disclosure discloses a method and apparatus for feeding back channel state information, and a method and apparatus for transmitting data. The method for feeding back channel state information includes: calculating channel state information according to a first codebook, where the first codebook is a set of elements and each of the elements is a set of pre-coding matrixes; and feeding back the channel state information.

Abstract: An encoding method and apparatus, and a computer storage medium, wherein same are used to improve the LDPC encoding performance, and are thus suitable for 5G systems. The encoding method comprises: determining a base graph of a low density parity check code (LDPC) matrix, and constructing a cyclic coefficient index matrix; determining a sub-cyclic matrix according to the cyclic coefficient index matrix; and carrying out LDPC encoding according to the sub-cyclic matrix and the base graph.

Abstract: The code block segmentation method includes: a base station determining whether to use the maximum length of a first pre-set information bit for code block segmentation or to use the maximum length of a second pre-set information bit for code block segmentation; if it is determined to use the maximum length of the first pre-set information bit for code block segmentation, the base station segmenting a transport block into one or more segments by taking the maximum length of the first pre-set information bit as an upper limit; and if it is determined to use the maximum length of the second pre-set information bit for code block segmentation, the base station segmenting a transport block into one or more segments by taking the maximum length of the second pre-set information bit as an upper limit, wherein the maximum length of the first pre-set information bit is greater than the maximum length of the second pre-set information bit.

Abstract: A system and method is provided for generating textured building models from wirelessly captured ground-level imagery. Ground-level images of facades of building objects are collected for identification of geometry planes and generation of building façade geometry. The 3D building model is properly geo-positioned, scaled and textured.

Abstract: Systems, methods, and non-transitory computer-readable media can determine sensor data captured by at least one sensor of a vehicle while navigating an environment over a period of time. Information describing one or more agents associated with the environment during the period of time can be determined based at least in part on the captured sensor data. A schema-based encoding describing the environment during the period of time can be generated based at least in part on the determined information and a scenario schema, wherein the schema-based encoding provides a structured representation of the environment during the period of time.

Abstract: Disclosed are a polar code encoding method and device and a polar code decoding method and device. The polar code encoding method comprises: reading a known first sequence; and for an information sequence to be encoded, combining the information sequence with the first sequence, and performing polar code encoding on the combined sequence. In the polar code encoding method provided by embodiments of the present disclosure, a known first sequence is read and polar code encoding is performed on an information sequence and the first sequence. Thus, polar code encoding on the information sequence to be encoded is implemented, and a new polar code encoding solution is provided.

Abstract: The present application provides a spatial layered transmission method and a spatial layered transmission device. The spatial layered transmission method includes steps of: dividing to-be-transmitted data into at least two layers of spatial data; determining a symbol rate for each layer of spatial data, to enable an error between SERs for the layers of spatial data to be smaller than a predetermined error threshold; and encoding each layer of spatial data in accordance with the determined symbol rate, and transmitting the encoded layer of spatial data.

Abstract: A system and method is provided for generating textured building models from wirelessly captured ground-level imagery. Ground-level images of façades of building objects are collected for identification of geometry planes and generation of building façade geometry. The 3D building model is properly geo-positioned, scaled and textured.

Abstract: A method for transmitting a synchronization sequence, and a method and a device for synchronization detection are provided, the method for transmitting the synchronization sequence including: setting a target synchronization sequence with good autocorrelation characteristic, where at least one segment of sequence truncated in a time domain or a frequency domain of the target synchronization sequence is a sub-synchronization sequence, and the sub-synchronization sequence has good autocorrelation characteristic and the sub-synchronization sequences have good cross-correlation between each other; and transmitting the target synchronization sequence to a user equipment.

Abstract: According to embodiments of the present disclosure, a transmitting device processes the signals transmitted by one or more UEs, maps the non-orthogonal characteristic patterns for the processed signals for the one or more UEs so as to superpose the signals for different UEs on the corresponding radio resources, and transmits the processed signals for the one or more UEs in accordance with a mapping result.

Abstract: A low density parity check code transmission method and device, for use in improving the anti-burst-error capability of a low density parity check code. The method provided by the present application comprises: an interleaver changes the sequence of bit streams of a low density parity check code according to a preset rule, and outputs to a modulator the low density parity check code the sequence of bit streams of which is changed; the modulator modulates the low density parity check code the sequence of bit streams of which is changed and then sends the modulated low density parity check code to a receive end by using a channel.

Abstract: The present disclosure relates to the field of wireless communication technology, and provides a data transmission method and a data transmission device, so as to solve the problem in the related art where, for 5G application scenarios, in the case that an uplink scheduling algorithm for a conventional 4G system continues to be used, a large number of control signaling overheads are required due to the meteoric growth in the number of UEs to be connected. In the present disclosure, a network side device determines non-orthogonal multiple access basic transmission units allocated to UEs, detects a pilot signal from each UE on the corresponding non-orthogonal multiple access basic transmission unit, and in the case that the pilot signal has been detected, performs data detection on the UE which has transmitted the pilot signal through the non-orthogonal multiple access basic transmission unit.

Abstract: In one embodiment, a method includes training an image localization model for determining an adjusted location reading for a vehicle based on its location reading and the associated image. The method further includes updating a location associated with the vehicle using the adjusted location reading. The training of the image localization model includes generating feature representations of a number of training images, and learning a relationship between the feature representations and differentials between a number of raw location readings and their respective reference location readings.

Abstract: A transmission resource indication method, a base station, a UE and a transmission resource indication system are provided. The transmission resource indication method includes: receiving, by a UE, DCI from a base station, the DCI including indication information indicating one or more of a TTI length for a transmission resource, a time-domain position of the transmission resource and a frequency-domain of the transmission resource; and determining, by the UE, the transmission resource in accordance with the indication information and performing transmission on the transmission resource.

Abstract: Disclosed in the present invention are a method and apparatus for transmitting and detecting downlink control information. The method comprises: determining a state of resource allocation in a downlink transmission time period, the resource allocation comprising allocation of at least one downlink transmission resource region; and transmitting downlink control information on a preset resource in the at least one downlink transmission resource region, the downlink control information being used for scheduling at least one terminal to perform data transmission in the downlink transmission resource region. The method also comprises: detecting the downlink control information on the preset resource in the downlink transmission time period; determining, according to the detected downlink control information, a data transmission region indicated by the downlink control information; and detecting follow-up downlink control information according to the data transmission region.