Abstract: This application relates to the field of positioning technologies, and specifically to a data transmission method, a server, and a base station. The method includes: receiving, by a base station, a first message sent by a server, where the first message carries a first data packet including positioning assistance data; and broadcasting, by the base station, the first data packet in the first message to a terminal.

Abstract: Embodiments of the present invention provide a terminal device and a positioning system, and relate to the field of communications technologies. The terminal device is configured to: obtain identifiers of at least two antenna elements and attribute information of a reference signal corresponding to each of the at least two antenna elements; receive at least two reference signals based on the attribute information, where the at least two reference signals are sent by corresponding antenna elements of the at least two antenna elements, respectively; obtain positioning information; and send, to the network device, the positioning information and identification information of antenna elements corresponding to the positioning information. Positioning signals obtained by different antenna elements are different, so that the terminal device can identify which antenna element a received positioning signal comes from.

Abstract: Embodiments of this application provide a signal measurement method and a related device. The signal measurement method includes: when performing signal measurement, determining, by a terminal, whether a signal bandwidth of a signal sent by a base station is switched; if determining that the signal bandwidth of the sent signal is switched, measuring, by the terminal, a switched signal bandwidth or a switched frame structure of the sent signal; and sending, by the terminal, a measurement report to the base station according to a preset rule or a measurement indication of the base station, to realize measuring a signal with a changing bandwidth in a cellular mobile communications network.

Abstract: The present disclosure relates to the mobile communications field. In a positioning base station determining method, a positioning server receives a positioning request message from a terminal device; the positioning server obtains information about a candidate base station from a serving base station of the terminal device according to the positioning request message, where the information about a candidate base station indicates at least one base station; and the positioning server determines a positioning base station set according to the information about a candidate base station, where the positioning base station set includes a positioning base station configured to position the terminal device, and the positioning base station includes one or more of the at least one base station and/or the serving base station.

Abstract: This application discloses a measurement method and a device, to resolve the following problem: A collision occurs in a process of performing two measurement tasks by a terminal device, affecting measurement efficiency of the terminal device. In this method, after the terminal device simultaneously or successively receives measurement requests sent by devices initiating two measurement tasks, the terminal device may preferentially perform any one of the two measurement tasks, thereby ensuring completion quality of the measurement task. In this way, when devices initiating two measurement tasks instruct the terminal device to perform the two corresponding measurement tasks, a collision can be avoided in a process of performing the two measurement tasks by the terminal device, thereby ensuring measurement efficiency of the terminal device.

Abstract: A method and device for estimating the time of arrival (ToA) of a radio signal are proposed. The radio signal comprises M subsignals carried on M subcarriers, where M is an integer ?2. The number of propagation paths and the time of arrival associated with a first path are estimated. The technique can improve ToA estimation accuracy, especially in a multipath fading channel, and reduce the need for channel information.

Abstract: The present invention discloses a positioning method. When a primary cell PCell and a serving cell SCell that are of user equipment UE have different uplink-downlink configurations at a same subframe location, and the UE does not support simultaneous transmission and reception, the method includes: receiving, by a first device, positioning information of the UE, where the positioning information includes positioning assistance information, or positioning assistance information and a UE identifier, and the positioning assistance information includes at least positioning reference signal PRS information, or PRS information and a Cell ID; determining, by the first device and according to the positioning information, that the UE performs PRS measurement at the same subframe location of the SCell that has same configuration, and avoiding, by the first device, scheduling data or configuring a sounding signal sounding at the same subframe location of the PCell and the SCell that have different configurations.

Abstract: A network device for locating performing following operations: determining a base station set and an auxiliary UE set that participate in locating of to-be-located target UE; receiving from the to-be-located target UE, a first RSTD set of positioning reference signals PRSs sent by any two base stations in the base station set to the to-be-located target UE, and a second RSTD set of a PRS sent by any auxiliary UE in the auxiliary UE set to the to-be-located target UE and a PRS sent by a reference base station in the base station set to the to-be-located target UE; and determining location information of the plurality of to-be-located UEs based on the first RSTD set, the second RSTD set, and location information of base stations included in the base station set. Locating accuracy and flexibility can be improved.

Abstract: Embodiments of the present disclosure disclose a positioning information transmission method, a related device, and a system. The positioning information transmission method includes: determining an uplink subframe for carrying an uplink signal and a downlink subframe for carrying a downlink signal; determining first measurement information and second measurement information; and sending the first measurement information and the second measurement information to a positioning server, for locating a terminal device by the positioning server. Positioning accuracy can be improved by using the embodiments of the present disclosure.

Abstract: The present disclosure relates to information transmission methods. One example method includes obtaining, by a positioning center, coverage indication information, where the coverage indication information is used to indicate a coverage enhancement level of user equipment UE, indicate that UE is at a first coverage enhancement level, or to indicate that UE requests to reduce a quantity of to-be-measured cells, and sending, by the positioning center, positioning measurement configuration information to the UE, where the positioning measurement configuration information is determined by the positioning center based on the coverage indication information, and the positioning measurement configuration information is used to perform positioning measurement configuration on the UE.

Abstract: Embodiments of the present disclosure provide a floor positioning method and system, and a device, and relate to the communications field. The method includes: receiving a reference signal sent by at least one access point in an indoor environment in which UE is located; determining measurement information based on a polarization direction of the at least one received reference signal, where the measurement information includes at least one access point identifier and a proportion-related value of a vertical polarization direction relative to the polarization direction of the reference signal corresponding to the at least one access point identifier; sending the measurement information to a positioning server; and receiving location information of the UE sent by the positioning server, where the location information of the UE includes a floor location of the UE, and the floor location of the UE is determined based on the measurement information.

Abstract: The present invention provides a signal determining method and an apparatus, so as to resolve a problem, in a conventional positioning method, that a signal receiving device cannot accurately determine whether a received signal is an aggregated reference signal, and consequently, positioning fails due to a relatively large error of location information obtained by means of positioning. The method is as follows: A signal receiving device may estimate, according to a TAE between at least two subcarriers used by a signal sending device to transmit a reference signal and a reference signal sent by the signal sending device on each subcarrier, an aggregated reference signal that is sent by the signal sending device and that is obtained after carrier aggregation. After receiving a signal, the signal receiving device determines whether the signal is an aggregated reference signal sent by the signal sending device.

Abstract: Embodiments of the present invention provide a positioning method, a positioning server, and a positioning system. The positioning method includes: separately obtaining, by a positioning server, location coordinates of M positioning nodes; separately obtaining, by the positioning server, a reference signal time difference RSTD between an ith positioning node and an (i+1)th positioning node in the M positioning nodes and a jth mobile terminal in two mobile terminals; determining, by the positioning server, a relative RSTD according to the RSTD; and determining, by the positioning server, location coordinates of the two mobile terminals according to the relative RSTD and the location coordinates of the M positioning nodes.

Abstract: Embodiments of the present disclosure provide a positioning method based on a time difference of arrival, user equipment, and a network device. The method includes: calculating, by user equipment, a first time difference of arrival RSTD1 based on positioning signals sent by a first base station and a second base station at a same moment; calculating a second time difference of arrival RSTD2 based on known location information of the user equipment; calculating a time alignment error TAE based on the RSTD1 and the RSTD2; and performing, based on the TAE, positioning based on a time difference of arrival TDOA. According to this method, the TAE caused by the base stations is subtracted during positioning calculation. In other words, the time alignment error caused by the base stations is eliminated. Therefore, accuracy of TDOA-based positioning can be ensured.

Abstract: The present disclosure relates to the mobile communications field. In a positioning base station determining method, a positioning server receives a positioning request message from a terminal device; the positioning server obtains information about a candidate base station from a serving base station of the terminal device according to the positioning request message, where the information about a candidate base station indicates at least one base station; and the positioning server determines a positioning base station set according to the information about a candidate base station, where the positioning base station set includes a positioning base station configured to position the terminal device, and the positioning base station includes one or more of the at least one base station and/or the serving base station.

Abstract: Embodiments of the present invention disclose a method which including: receiving a locating reference signal sent by a locating transmitter; performing time domain related processing on the locating reference signal and a synchronization reference signal sequence to obtain a related spectrum value of a multipath signal component corresponding to a delay value; detecting a channel parameter used when the locating reference signal is received, and generating, according to the channel parameter and a function that progressively decreases with the delay value, a related spectrum threshold that progressively decreases with the delay value; and traversing the delay value in ascending order of the delay value, searching for a first traversed delay value whose related spectrum value of a multipath signal component corresponding to the delay value is greater than a related spectrum threshold corresponding to the delay value, and using the found delay value as TOA for outputting.

Abstract: Embodiments of the present disclosure provide a resource allocation method, a network-side device, and a terminal device. The resource allocation method includes: allocating, by a network-side device, a first resource, where the first resource is used to carry a positioning reference signal, and the positioning reference signal is used to perform positioning on a terminal device; determining, by the network-side device, a first allocation mode of the first resource, where the first allocation mode is configuring the positioning reference signal in all unoccupied locations of the first resource; and sending, by the network-side device, the positioning reference signal on the first resource in the first allocation mode, or receiving, by the network-side device, the positioning reference signal on the first resource in the first allocation mode.

Abstract: Embodiments of the present invention provide a terminal device and a positioning system, and relate to the field of communications technologies. The terminal device is configured to: obtain identifiers of at least two antenna elements and attribute information of a reference signal corresponding to each of the at least two antenna elements; receive at least two reference signals based on the attribute information, where the at least two reference signals are sent by corresponding antenna elements of the at least two antenna elements, respectively; obtain positioning information; and send, to the network device, the positioning information and identification information of antenna elements corresponding to the positioning information. Positioning signals obtained by different antenna elements are different, so that the terminal device can identify which antenna element a received positioning signal comes from.

Abstract: Embodiments of the present disclosure provide a positioning method based on a time difference of arrival, user equipment, and a network device. The method includes: calculating, by user equipment, a first time difference of arrival RSTD1 based on positioning signals sent by a first base station and a second base station at a same moment; calculating a second time difference of arrival RSTD2 based on known location information of the user equipment; calculating a time alignment error TAE based on the RSTD1 and the RSTD2; and performing, based on the TAE, positioning based on a time difference of arrival TDOA. According to this method, the TAE caused by the base stations is subtracted during positioning calculation. In other words, the time alignment error caused by the base stations is eliminated. Therefore, accuracy of TDOA-based positioning can be ensured.

Abstract: Embodiments of the present disclosure provide a floor positioning method and system, and a device, and relate to the communications field. The method includes: receiving a reference signal sent by at least one access point in an indoor environment in which UE is located; determining measurement information based on a polarization direction of the at least one received reference signal, where the measurement information includes at least one access point identifier and a proportion-related value of a vertical polarization direction relative to the polarization direction of the reference signal corresponding to the at least one access point identifier; sending the measurement information to a positioning server; and receiving location information of the UE sent by the positioning server, where the location information of the UE includes a floor location of the UE, and the floor location of the UE is determined based on the measurement information.