Abstract: The navigation solution of a portable device may be enhanced using map information. Sensor data for the portable device may be used to derive navigation solutions at a plurality of epochs over a first period of time. Position information for the device may be estimated at a time subsequent to the first period of time using the navigation solutions. Map information for an area encompassing a current location of the portable device may also be obtained. Multiple hypotheses regarding possible positions of the portable device may be generated using the estimated position information and the map information. By managing and processing the hypotheses, estimated position information for at least one epoch during the first period of time may be updated. An enhanced navigation solution for the at least one epoch may be provided using the updated estimated position information.

Abstract: A real-time multi-task scheduling method and apparatus for dynamically scheduling a plurality of tasks in the computing system are disclosed. In the method, a processor of the computing system determines that laxity correction should be performed for a currently scheduled task, and then acquires a remaining execution time of the currently scheduled task according to an execution progress of the currently scheduled task and a time for which the currently scheduled task has been executed. After acquiring a laxity of the currently scheduled task according to the remaining execution time of the currently scheduled task and a deadline of the currently scheduled task, the processor determines a priority of the currently scheduled task according to the laxity of the currently scheduled task, and re-determines a priority queue according to the priority of the task. Then, the processor scheduling the plurality of tasks according to the re-determined priority queue.

Abstract: A method for operating a transmitting device includes receiving a first packet data convergence protocol (PDCP) protocol data unit (PDU) associated with a first remote device (RD), the first PDCP PDU including at least a first PDCP header, generating a first nested PDCP PDU in accordance with the first PDCP PDU, the first nested PDCP PDU including a second PDCP header and the first PDCP PDU, the second PDCP header comprising a first PDU type indicator indicating that the first nested PDCP PDU includes a first relayed PDCP PDU and a first identifier associated with the first RD, and sending the first nested PDCP PDU on a radio bearer.

Abstract: The present invention relates to the communications field, and discloses a path selection method, a device, and a system, to resolve a problem in the prior art that if a distance between two terminal devices performing direct communication is relatively long or channel quality changes relatively greatly, the two terminal devices cannot perform D2D communication. A specific solution is: A first device receives first discovery information sent by a second device, adds an ID of the first device to the first discovery information, and sends the first discovery information to which the ID of the first device is added, so that a destination device can determine a transmission path after receiving the first discovery information. The present invention is used for path selection.

Abstract: The disclosure is related to methods, apparatuses, and systems for launching an engine start-stop function in vehicles. A vehicle terminal may transmit to a server a traffic information acquiring instruction which carries current location information for the vehicle; receive traffic information transmitted by the server; and launch the engine start-stop function for the vehicle when the traffic information satisfies a preset condition. The server may acquire the traffic information of a road at which the vehicle is located currently after receiving the traffic information acquiring instruction and transmit the acquired traffic information to the vehicle terminal. Whether to launch the engine start-stop function may be based on the traffic information such that, for example, the engine is not stopped when the vehicle is expected to be stopped for too brief a time period.

Abstract: The present invention discloses a data retransmission method, a device, and a system, and relates to the communications field, so as to resolve a prior-art problem that when a device transmits data by using an unlicensed carrier, the data cannot be retransmitted because a channel needs to be preempted again. A specific solution is as follows: A first device transmits data to a second device by using a first carrier, where the first carrier is an unlicensed carrier. The first device obtains status information of the first carrier, where the status information is used to determine whether the first carrier is available. When the first carrier is unavailable, the first device retransmits the data to the second device by using a second carrier, where the first carrier and the second carrier are different carriers. The present invention is used for data retransmission.

Abstract: Embodiments of the present invention disclose a data transmission method, including: obtaining, by a first device, N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols are used to carry control information and data; and sending, by the first device, a first subframe and a second subframe to a second device, where the first subframe or the second subframe carries the control information, the first subframe includes M OFDM symbols of the N OFDM symbols, the second subframe includes K OFDM symbols of the N OFDM symbols, N is a positive integer, M or K is zero or a positive integer, M is not greater than N, and K is not greater than N. The embodiments of the present invention further provide a first data transmission device.

Abstract: A memory access processing method and apparatus, and a system. The method includes receiving a memory access request sent by a processor, combining multiple memory access requests received within a preset time period to form a new memory access request, where the new memory access request includes a code bit vector corresponding to memory addresses. A first code bit identifier is configured for the code bits that are in the code bit vector and corresponding to the memory addresses accessed by the multiple memory access requests. The method further includes sending the new memory access request to a memory controller, so that the memory controller executes a memory access operation on a memory address corresponding to the first code bit identifier. The method effectively improves memory bandwidth utilization.

Abstract: The present invention provides a dynamic set associative cache apparatus for a processor. When read access occurs, the apparatus first determines a valid/invalid bit of each cache block in a cache set to be accessed, and sets, according to the valid/invalid bit of each cache block, an enable/disable bit of a cache way in which the cache block is located; then, reads valid cache blocks, compares a tag section in a memory address with a tag block in each cache block that is read, and if there is a hit, reads data from a data block in a hit cache block according to an offset section of the memory address.

Abstract: A data transmission method for data transmission, including obtaining, by a network device, a quantity of physical resource blocks (PRBs) that are occupied by first data carried in a first subframe, where the quantity of PRBs that are occupied by the first data carried in the first subframe is preconfigured, or may be determined by the network device or user equipment, determining a first transport block size (TBS) according to the quantity of PRBs that are occupied by the first data carried in the first subframe, performing, according to the first TBS, modulation and coding on the first data carried in the first subframe and first data carried in a second subframe, and sending the first subframe and the second subframe to the user equipment.

Abstract: A data transmission method and an apparatus relate to the communications field and are applied to data transmission to effectively reduce a collision reoccurrence probability after a device in a licensed-assisted access using Long Term Evolution (LAA-LTE) system preempts an unlicensed spectrum and collides with another device. A first device adjusts a detection moment or a quantity of detection times of clear channel assessment (CCA) of a channel in an unlicensed spectrum after the first device determines that the first device collides with another device when occupying the channel in the unlicensed spectrum to transmit data, and the first device occupies, according to an adjusted detection moment or an adjusted quantity of detection times of CCA of the channel in the unlicensed spectrum, the channel in the unlicensed spectrum to transmit data.

Abstract: A wireless communication method, a base station and a wireless communication device. The wireless communication method includes: in case that communication devices which are to perform communication are estimated to satisfy a condition for device-to-device direct communication, transmitting a control signaling from a base station to the communication devices, the control signaling allocating a carrier for the device-to-device direct communication; and performing the device-to-device direct communication between the communication devices using the allocated carrier, wherein the base station allocates the carrier for the device-to-device direct communication from conventional carrier, stand-alone new-type carrier and non-stand-alone new-type carrier, wherein the new-type carrier has a reduced number of control channels as compared with the conventional carrier.

Abstract: A method for operating a transmitting device includes receiving a first packet data convergence protocol (PDCP) protocol data unit (PDU) associated with a first remote device (RD), the first PDCP PDU including at least a first PDCP header, generating a first nested PDCP PDU in accordance with the first PDCP PDU, the first nested PDCP PDU including a second PDCP header and the first PDCP PDU, the second PDCP header comprising a first PDU type indicator indicating that the first nested PDCP PDU includes a first relayed PDCP PDU and a first identifier associated with the first RD, and sending the first nested PDCP PDU on a radio bearer.

Abstract: Anchor points associated with point of sale information may be ordered by segmenting a trajectory derived from sensor data defined by adjacent turns to generate candidate links for each segment from which possible paths for the trajectory are derived. Each derived possible path may be scored with a multi-objective function using a global optimization algorithm to select a solution path from the derived possible paths that may be used to order a plurality of anchor points.

Abstract: A data transmission method and a device are disclosed and relate to the field of communications technologies, so that a channel resource preemption probability of a device can be effectively increased by reducing a CCA interval at which a CCA is performed on a channel resource. The method includes: determining, by a first device, a CCA start moment at which a clear channel assessment CCA is performed; determining, by the first device, a CCA interval, where the CCA interval is a time interval between two adjacent CCAs, and a time interval between any two adjacent CCAs is less than a preconfigured data frame period; performing, by the first device, a CCA process according to the CCA start moment and the CCA interval; and sending, by the first device, data at an end moment of the CCA process. The method and the device are used for data transmission.

Abstract: A data transmission method, a device, and a system are disclosed and relate to the communications field, to resolve a problem that modulation and coding cannot be performed on data because no corresponding transport block size TBS exists when a quantity of physical resource blocks PRBs of a wireless communications system is greater than 110. A specific solution is: obtaining, by a first device, grouping information, where the grouping information is used to indicate information of grouping N PRBs into M PRB groups; performing modulation and coding by using a TBS that corresponds to each of the M PRB groups, to generate modulation symbols; and transmitting data to a second device by using a physical resource that corresponds to the N PRBs. The foregoing solution is used for data transmission in a wireless network.

Abstract: The present invention relates to the communications field, and discloses a data transmission method, a device, and a system, so as to resolve a problem in the prior art that user equipment cannot correctly parse data or measure a channel due to incapability of identifying different operators. A specific solution is: obtaining a scrambling code sequence, where the scrambling code sequence is generated according to a specific sequence of an operator to which a first device belongs; scrambling data according to the scrambling code sequence to obtain the scrambled data; and sending the scrambled data. The present invention is used for data transmission.

Abstract: This disclosure is directed to enhancing the navigation solution of a portable device using map information. Sensor data for the portable device may be used to derive a navigation solution. Position information for the device may be estimated using the navigation solution. Map information for an area encompassing a current location of the user may also be obtained. Multiple hypotheses regarding possible positions of the portable device may be generated using the estimated position information and the map information. By managing and processing the hypotheses, updated estimated position information may be provided. The updated estimated position information may be provided as output or feedback to enhance the navigation solution.

Abstract: This disclosure discloses an obstacle locating method and apparatus, which pertain to the field of locating technology. The obstacle locating method includes: acquiring a location of a locating device when an obstacle is found; adding the location and an identification of an indoor map corresponding to the location into location information; and sending the location information to a mobile device, where the location information triggers the mobile device to mark and display the location on an indoor map having the identification.

Abstract: A method for managing video data, includes: detecting whether an accident happens to a first vehicle; when it is detected that the accident happens to the first vehicle, sending to a server a first request for acquiring first video data, the first video data being driving record data of a second vehicle within a predetermined time period around happening of the accident, the second vehicle being a vehicle within a predetermined range around the first vehicle when the accident happens; and receiving the first video data returned from the server.