Abstract:
Methods, apparatuses and/or articles of manufacture, which may be employed in a mobile device and/or in a location server, enable acquisition assistance at the mobile device. In at least one implementation, which is not intended to limit claimed subject matter, acquisition assistance may include expected Doppler frequency shift and expected code phase in the case of a particular Global Navigation Satellite System (GNSS) satellite vehicle, as well as a search window for each of these, and a confidence value. The confidence value may indicate the likelihood of detecting signals from the satellite vehicle at the current expected location of the mobile device and within the given search windows and may enable one or more of faster location estimation, reduced battery consumption, and detection of weaker satellite signals.
Abstract:
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) may determine a downlink (DL) positioning reference signal (PRS) measurement period for measuring and processing DL PRSs transmitted by a base station while the UE is in a radio resource control (RRC) INACTIVE state. While in the RRC INACTIVE state, the UE may measure and process DL PRSs during the DL PRS measurement period. In another aspect, a network entity may receive one or more parameters associated with a capability of a UE to measure and process DL PRSs while the UE is in a RRC INACTIVE state. Based on those parameters, the network entity may determine a DL PRS measurement period to be used by the UE while the UE is in the RRC INACTIVE state. The network entity may send, to the UE, information for determining the DL PRS measurement period.
Abstract:
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives, from a location server, a positioning reference signal (PRS) configuration indicating one or more PRS resources to be measured by the UE, transmits, to a base station serving the UE, measurement report payload related information based on the PRS configuration, obtains positioning measurements of the one or more PRS resources, transmits a scheduling request (SR) to the base station, the SR requesting an uplink grant for a measurement report for the positioning measurements, receives the uplink grant from the base station in response to the SR, the uplink grant indicating uplink resources on which to transmit the measurement report, and transmits at least a portion of the measurement report to the base station on the uplink resources indicated by the uplink grant.
Abstract:
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) transmits a first request assistance data message to a location server, the first request assistance data message comprising a request for first positioning assistance, receives a provide assistance data message from the location server, the provide assistance data message indicating that the location server is not currently able to provide the first positioning assistance, and transmits a second request assistance data message to the location server after expiration of a reattempt time from reception of the provide assistance data message, the second request assistance data message indicating a request for second positioning assistance, wherein the first positioning assistance is not received by the UE prior to the reattempt time.
Abstract:
A position of a user equipment (UE) may be determined using downlink based solutions (e.g. OTDOA), uplink based solutions (e.g. UTDOA), or combined downlink and uplink based solutions (e.g. RTT). The serving gNBs may request neighboring gNBs to produce downlink reference signal transmissions to a target UE and/or measure uplink reference signal transmissions from the target UE. The serving gNB may receive the uplink reference signal measurements from neighboring gNBs and obtain an own uplink reference signal measurement and forward to the UE or another network entity all the uplink reference signal measurements. The UE may use the uplink reference signal measurements, along with the UE's own downlink reference signal measurements to determine RTTs. The serving gNBs or another entity may keep the uplink reference signal measurements and may determine RTTs after receiving the downlink reference signal measurements from the UE.
Abstract:
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) measures one or more positioning reference signal (PRS) resources of at least one PRS instance, and processes the one or more PRS resources of the at least one PRS instance during a PRS processing gap, wherein the PRS processing gap comprises a period of time during which the UE prioritizes PRS processing over reception, processing, or both of other downlink signals and channels.
Abstract:
Disclosed are techniques related to wireless communications. In an aspect, a network entity determines whether a source reference signal transmitted from a first transmission-reception point (TRP) is a quasi-collocation (QCL) source of a target reference signal transmitted from a second TRP based, at least in part, on a first bandwidth (BW) portion occupied by the source reference signal and a second BW portion occupied by the target reference signal, the first BW portion having a first start frequency and a first BW size and the second BW portion having a second start frequency and a second BW size, and configures a user equipment (UE) with the source reference signal as the QCL source of the target reference signal when it is so determined.
Abstract:
Embodiments provide for enhanced procedures for a Mobile Originated Location Request (MO-LR), Mobile Terminated Location Request (MT-LR) and periodic or triggered MT-LR that may be used to enable sidelink positioning and ranging location results to be obtained for a group of two or more UEs with assistance from an LMF and to be provided to the group of UEs (MO-LR) or to an LCS Client or AF (MT-LR or periodic or triggered MT-LR). The enhancements allow the LMF to interact with just one UE of the group of UEs and for an LCS Client or AF to indicate a preference for the one UE.
Abstract:
A method of wireless communication by a base station, jointly processes channel information associated with a user equipment, UE, in order to generate a jointly processed report. The channel information is collected from collocated transmit and receive points, TRPs (604, t1, t2, t3), of the base station. The base station transmits (t5) the jointly processed (t4) report to a location server (112).
Abstract:
Techniques are provided for positioning of a mobile device in a wireless network using directional positioning reference signals (PRS), also referred to as PRS beamforming. In an example method, a plurality of directional PRSs are generated for at least one cell for a base station, such that each of the plurality of directional PRSs comprises at least one signal characteristic and a direction of transmission, either or both of which may be distinct or unique. The plurality of directional PRSs is transmitted within the at least one cell, such that each of the plurality of directional PRSs is transmitted in the direction of transmission. A mobile device may acquire and measure at least one of the directional PRSs which may be identified using the associated signal characteristic. The measurement may be used to assist position methods such as OTDOA and ECID and to mitigate multipath.