摘要:
A system and method includes transmission mode design for Extension Carrier of LTE-Advanced. The system includes a base station capable of communicating with subscriber stations using an extension carrier. The extension carrier is not backwards compatible and does not transmit any LTE Release 8-10 cell-specific reference signals (CRS) or Physical Downlink Control Channel. The system including transmission mode design for Extension Carrier of LTE-Advanced uses a basic demodulation reference signal transmission scheme (Basic DM-RS TS) when the PDSCH transmission uses DCI format 1A. Basic DM-RS TS uses DM-RS ports and does not uses CRS ports.
摘要:
An antenna port for an extended Physical Downlink Control CHannel (ePDCCH) transmission is determined based on at least an identifier for a leading extended Control Channel Element (eCCE) within the ePDCCH and an identifier for a user equipment (UE) to receive the ePDCCH transmission, and based on whether the ePDCCH transmission is localized or distributed. The determined antenna port is a DeModulation Reference Signal (DMRS) port to which the UE is assigned. Symbols are mapped in sequence to resource elements (REs) and transmitted via the determined antenna port to the UE.
摘要:
A method and an apparatus in a base station are capable of including a tracking reference signal (TRS) in a downlink subframe. The method includes generating a TRS subframe by including the TRS in the downlink subframe at a frequency density of at least one resource element per six resource elements in the TRS subframe. Additionally, the method includes transmitting the TRS subframe at a periodicity among other subframes not including the TRS.
摘要:
A method of operating a network entity includes receiving, from a UE, via a first TRP and a second TRP, a SRS, and estimating a channel based on the received SRS. The method further includes, for N iterations: transmitting, via the first TRP, a CSI-RS with a first polarization; transmitting, via the second TRP, the CSI-RS with a second polarization and a controlled phase offset; receiving, from the user equipment UE, a PMI report associated with the CSI-RS including co-phasing information between the first polarization and the second polarization; and updating the controlled phase offset, based on the co-phasing information. After the N iterations, the method further includes, based on the controlled phase offset and the co-phasing information, determining a phase mis-match for phase calibration between the first TRP and the second TRP.
摘要:
A two-dimensional constellation for data signals having improved bitwise mutual information of data points is based on a signal-to-noise ratio (SNR) and a code rate where, based on the SNR, data bits are mapped to pre-defined in-phase and quadrature values. The in-phase and quadrature values denote points in the two-dimensional space such that the efficiency of bitwise mutual information is adapted based on the SNR. The mapping is preferably subject to a constraint selected from one of quadrant symmetry Lagrangian (QSL), quadrant symmetry constraint (QSC), or rectangular structure constraint (RSC).
摘要:
A method of operating a network includes receiving an UL RS, estimating UL channels for a plurality of TRPS based on the UL RS, configuring first DL RS resources from an upper portion of a BWP, transmitting via the plurality of TRPs, a first beamformed DL RS from the upper portion of the BWP, and receiving via one or more of the plurality of TRPs, first CSI feedback based on the first DL RS. The method further includes configuring second DL RS resources from a lower portion of the BWP, transmitting via the plurality of TRPs, a second beamformed DL RS from the lower portion of the BWP, receiving via one or more of the plurality of TRPs, second CSI feedback based on the second DL RS, and determining a timing mis-match between the plurality of TRPs based on the first CSI feedback and the second CSI feedback.
摘要:
A system and method of a base station are configured to enable a multi-shot network parameter optimization. The method includes generating one or more specified Key Performance Indicators (KPI) constraints based on a selected set of KPIs. The method also includes adjusting common beam parameters to tune a common beam based on the selected set of KPIs. The common beam is tuned to satisfy the one or more specified KPI constraints. The method also includes adjusting handover A2 and A5 parameters based on searching within a three-dimensional space defined by specified A2 and A5 thresholds. The method further includes transmitting one or more signals based on the adjusted the common beam parameters and the adjusted handover A2 and A5 parameters.
摘要:
A SmarterFi gateway integrates a WiFi access point and smart repeater, and executes a method therefor. The method includes receiving, from a user equipment (UE) via a first wireless communication channel, wireless fidelity (WiFi) signals that include information indicating a location of the UE. The WiFi signals are received by a transceiver that includes a first antenna array for communication with the UE, and a second antenna array for communication with a gNB. The method includes transmitting, to the gNB via the second antenna array, uplink data and control information that includes the UE location information. The method includes receiving, from the gNB via the second antenna array, downlink information intended for the UE. The method includes forward-transmitting, to the UE via a second wireless communication channel, the downlink information via a beam formed at the first antenna array to serve the UE at the location of the UE.
摘要:
An indoor positioning method includes scanning for registered Wi-Fi nodes with known coordinates to generate a list of the registered Wi-Fi nodes. The method also includes performing a ranging operation by (i) selecting nodes to range with from the list of the registered Wi-Fi nodes, and (ii) processing ranging responses from the selected nodes to generate a series of distance measurements. The method further includes obtaining a series of sensor readings generated by one or more inertial measurement units (IMUs) of a device. The method also includes estimating a position of the device based on the series of distance measurements and the series of sensor readings using first and second filtering operations that are performed in parallel.
摘要:
An electronic device includes a first set of sensors configured to generate motion information. The electronic device also includes a second set of sensors configured to receive information from multiple anchors. The electronic device further includes a processor configured to generate a path to drive the electronic device within an area. The processor is configured to receive the motion information. The processor is configured to generate ranging information based on the information that is received. While the electronic device is driven along the path, the processor is configured to identify a location and heading direction within the area of the electronic device based on the motion information. The processor is configured to modify the estimate of location and the heading direction of the electronic device based on the ranging information. The processor is configured to drive within the area according to the path, based on the location and heading direction.