Abstract:
A method of determining a position in a wireless communication system and apparatus thereof are disclosed. The present invention includes receiving system information including information on a reference cell and at least one neighbor cell from a location server, receiving positioning reference signals (PRSs) from the reference cell and the at least one neighbor cell using the system information, measuring reference signal time difference (RSTD) of each of the at least one neighbor cell for the reference cell, and transmitting the at least one measured RSTD to the location server. And, the RSTD is a relative timing difference between two cells. Moreover, the system information includes at least one cell for obtaining a system frame number (SFN) by the UE, as the reference cell or the at least one neighbor cell.
Abstract:
A method of determining a position in a wireless communication system and apparatus thereof are disclosed. The present invention includes a method for performing, by a user equipment, measurements for observed time difference of arrival, OTDOA, the method comprising: receiving, by the user equipment, system information including information on a reference cell for the OTDOA and information on a neighbor cell for the OTDOA; receiving, by the user equipment, a positioning reference signal, PRS, of the reference and a PRS of the neighbor cell based on the system information; and measuring, by the user equipment, relative timing difference between the neighbor cell and the reference cell based the PRSs, wherein the system information includes a PRS muting sequence for at least one of the reference and neighbor cells, wherein the PRS muting sequence indicates which PRS positioning occasion, among a plurality of PRS positioning occasions, a PRS of a corresponding cell is muted in, wherein each of the plurality of PRS positioning occasions comprises of consecutive subframes to which the PRS of the corresponding cell is allocated, and wherein a first bit of the PRS muting sequence corresponds to a first PRS positioning occasion that starts after a beginning of system frame number = 0 of the reference cell.
Abstract:
The present invention relates to an apparatus and a method for performing beamforming using multiple antennas in a wireless AV system. The present specification discloses a wireless data transmission apparatus comprising: a plurality of transmission antennas; a communication circuit for performing a MIMO beamforming procedure on the basis of an individual transmission sector sweep for each of the plurality of transmission antennas during a data transmission interval within a beacon interval, and transmitting a physical layer protocol data unit (PPDU) frame to a wireless data reception apparatus through the plurality of transmission antennas; and a processor connected to the communication circuit, and configured to generate AV data to be transmitted through the PPDU frame and provide the generated AV data to the communication circuit. The present invention can reduce time required for MIMO beamforming while minimizing training of an excessive sector combination in a communication procedure or information related to the MIMO beamforming in a wireless AV system, and maintain the reliability of the system by using an optimum sector combination.
Abstract:
A method of determining a position in a wireless communication system and apparatus thereof are disclosed. The present invention includes a method for performing, by a user equipment, measurements for observed time difference of arrival, OTDOA, the method comprising: receiving, by the user equipment, system information including information on a reference cell for the OTDOA and information on a neighbor cell for the OTDOA; receiving, by the user equipment, a positioning reference signal, PRS, of the reference and a PRS of the neighbor cell based on the system information; and measuring, by the user equipment, relative timing difference between the neighbor cell and the reference cell based the PRSs, wherein the system information includes a PRS muting sequence for at least one of the reference and neighbor cells, wherein the PRS muting sequence indicates which PRS positioning occasion, among a plurality of PRS positioning occasions, a PRS of a corresponding cell is muted in, wherein each of the plurality of PRS positioning occasions comprises of consecutive subframes to which the PRS of the corresponding cell is allocated, and wherein a first bit of the PRS muting sequence corresponds to a first PRS positioning occasion that starts after a beginning of system frame number = 0 of the reference cell.
Abstract:
A method of determining a position in a wireless communication system and apparatus thereof are disclosed. The present invention includes a method for performing, by a user equipment, measurements for observed time difference of arrival, OTDOA, the method comprising: receiving, by the user equipment, system information including information on a reference cell for the OTDOA and information on a neighbor cell for the OTDOA; receiving, by the user equipment, a positioning reference signal, PRS, of the reference and a PRS of the neighbor cell based on the system information; and measuring, by the user equipment, relative timing difference between the neighbor cell and the reference cell based the PRSs, wherein the system information includes a PRS muting sequence for at least one of the reference and neighbor cells, wherein the PRS muting sequence indicates which PRS positioning occasion, among a plurality of PRS positioning occasions, a PRS of a corresponding cell is muted in, wherein each of the plurality of PRS positioning occasions comprises of consecutive subframes to which the PRS of the corresponding cell is allocated, and wherein a first bit of the PRS muting sequence corresponds to a first PRS positioning occasion that starts after a beginning of system frame number = 0 of the reference cell.