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:
A data demodulation method, apparatus, and system are presented. The method includes obtaining notification information indicating that UE is in a high-speed moving state; performing time-frequency synchronization processing on first downlink data according to the notification information to obtain second downlink data; and performing demodulation processing on the second downlink data to obtain third downlink data, where in the demodulation processing, inter-TTIs filtering for a channel estimation is not performed, or a filtering coefficient as a weight of a current TTI for a channel estimation is greater than a filtering coefficient as a weight of a TTI that is at the time when the UE is in the non-high-speed moving state for a channel estimation. The demodulation method is applicable to a high-speed scenario for improving a downlink data throughput of the UE.
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:
Embodiments provide a method for configuring a serving cell in dual connectivity, user equipment, and a base station. According to the method, a master eNodeB sends RRC connection reconfiguration signaling to the user equipment, where the RRC connection reconfiguration signaling carries indication information used to indicate whether an SFN of the master eNodeB and an SFN of the secondary eNodeB have same parity, or carries an SFN of the secondary eNodeB. The UE executes primary secondary cell pSCell configuration at the secondary eNodeB according to the RRC connection reconfiguration signaling. The UE may determine parity of the SFN of the secondary eNodeB according to the received indication information or the SFN of the secondary eNodeB, and then the UE performs random access to the SeNB.
Abstract:
The present invention relates to the field of mobile communications technologies, and in particular, to an RS SNR reporting and receiving method, a terminal, and a base station, where the method comprises: sending, by the terminal, a user capability message to a serving base station, where the user capability message carries capability information of measuring and reporting an RS SNR by the terminal; and sending, by the serving base station, a measurement result reporting instruction message to the terminal based on the user capability message, and then reporting, to the serving base station, an RS SNR obtained by means of measurement.
Abstract:
A dynamic spectrum sharing method includes steps of: determining first spectrum utilization information of a covered cell, the first spectrum utilization information comprising any one an access failure rate of the covered cell, calling strength of the covered cell, an expected bandwidth of the covered cell, an idle bandwidth of the covered cell, bandwidth configuration information of the covered cell and edge user equipment information of the covered cell or any combinations thereof; and sending the first spectrum utilization information to a neighboring base station when dynamic spectrum sharing is performed in homogeneous systems with the same Radio Access Technology; or the base station sending the first spectrum utilization information to a core network when dynamic spectrum sharing is performed in heterogeneous systems with different Radio Access Technologies; or sending the first spectrum utilization information to a radio resource management server.
Abstract:
Embodiments of the present invention disclose a method and an apparatus for positioning a user equipment. The method includes receiving positioning measurement information sent by a base station. The positioning configuration information includes a sum of a difference between receiving time and sending time on the UE and a difference between receiving time and sending time on the base station. A round trip time between the intermediate node that sends the CRS and the UE is calculated according to the positing in formation. A position of the UE is determined using position coordinates of the intermediate node that sends the CRS and the round trip time.
Abstract:
A method and apparatus for determining a mobility state of a terminal is disclosed in embodiments of this invention, which relates to the technical field of wireless communication and is capable of accurately estimating a mobility state of a terminal in a complex network structure, configuring more appropriate network parameters for the terminal, optimizing mobility performance of the terminal and improving overall network performance. A method for determining a mobility state of a terminal is provided in an embodiment of this invention, including: calculating a total moving distance of a terminal in a predetermined period by using a distance estimation strategy; and determining a mobility state of the terminal according to the total moving distance. This invention is applicable to estimation of the terminal's mobility state in a homogeneous network and a heterogeneous network.
Abstract:
Embodiments of the present invention relate to a channel estimation method, a base station, user equipment UE, and a system. The method includes: setting up, by a base station, a connection to user equipment UE; and sending, to the UE, notification information indicating that the UE is in a radio remote scenario, where the notification information is used to instruct the UE to perform channel estimation by using a channel estimation algorithm applicable to the radio remote scenario, and the channel estimation algorithm is used to perform channel estimation on a signal that is obtained after downlink signals from multiple radio remote units RRUs are superposed. The UE can perform channel estimation by using the appropriate channel estimation algorithm, to effectively improve accuracy of the channel estimation, thereby effectively improving a downlink data throughput of the UE.
Abstract:
The present invention discloses a positioning apparatus and method. In embodiments of the present invention, a sending module sends auxiliary data information to a terminal, where the auxiliary data information is information required by the terminal to perform measurement on positioning nodes, where the auxiliary data information includes positioning node index numbers of the positioning nodes; a receiving module receives a positioning measurement result sent by the terminal, and provides the positioning measurement result to a positioning module, where the positioning measurement result includes a positioning measurement result corresponding to each positioning node index number, or a positioning measurement result that a reference positioning node index number separately corresponds to other positioning node index numbers; and the positioning module determines a location of the terminal by using the positioning measurement result.