Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.

Abstract: Methods and apparatuses provide a mechanism to account for timing errors of a wireless device (12) in positioning measurements. In one example, a wireless device (12) performs reference-signal transmissions or measurements and sends information to a network node (20) that is involved in positioning of the wireless device (12). The information indicates associations of the reference-signal transmissions or measurements with respective timing groups of the wireless device (12). Each timing group represents a related set of transmission or reception timing errors within the wireless device (12). Based on the information, the network node (20) accounts for the different timing-group associations when performing positioning calculations that are based on the reference-signal transmissions or measurements performed by the wireless device (12).

Abstract: Radio equipment (10) is configured for tap separated channel estimation in a wireless communication system. The radio equipment (10) obtains a channel estimate (16) of a radio channel over which a reference signal (12) is received, and separates the channel estimate (16) into channel estimate components (20) that correspond to respective channel taps (22). The radio equipment (10) then compensates the channel estimate components (20) for Doppler shifts respectively associated with the channel taps (22) to which the channel estimate components (20) correspond. The radio equipment (10) processes the compensated channel estimate components (32) separately. Such processing comprises filtering, interpolating, and/or extrapolating. The radio equipment (10) then de-compensates the processed channel estimate components (34) for the respective Doppler shifts, and forms a combined channel estimate (42) of the radio channel by combining the de-compensated channel estimate components (38).

Abstract: Signalling Support for NR Positioning with Aperiodic SRS ConfigurationsEmbodiments described herein relate to methods and apparatus in networks, and particularly methods, Location Management Functions, base stations and wireless devices for configuring and sending uplink sounding reference signals, UL SRS. 1. A method performed by a Location Management Function, LMF, comprises receiving radio resource information relating to radio resources that can be applied for UL SRS by a wireless device; and providing a notification relating to triggering aperiodic uplink SRS to a base station serving the wireless device.

Abstract: A method, wireless device and network node for sounding reference signal (SRS) configuration for full bandwidth transmission are disclosed. According to one aspect, a method includes determining a sounding reference signal, SRS, pattern within a resource, the SRS pattern being based at least in part on at least one of a comb size, at least one comb offset, at least one cyclic shift and a number of orthogonal frequency division multiplexing, OFDM, symbols within the resource; and optionally, sending a configuration specifying the SRS pattern.

Abstract: A method and UE for determining a position of a UE is provided. Assistance data is obtained from a network node for determining the position of the UE at the UE. A round trip time (RTT) measurement procedure is performed with a serving cell base station to obtain a RTT measurement. A received time is measured of a DL PRS from one or more neighbor base stations. The position is estimated using the assistance data, the RTT measurement and the DL PRS received time. A method and a network node to provide the assistance data is also provided. Information indicative of a distance to each of one or more neighbor base stations of a serving cell base station of the UE and location information of the base stations is obtained. Assistance data is provided to the UE, including the information indicative of the distance and the location information.

Abstract: A method in a network node and a network is provided to determine line of sight, LOS, base stations for a user equipment (UE) is provided. A request is provided to at least one of the UE and a plurality of base stations to measure and report LOS detection measurements, wherein the plurality of base stations includes base stations of a serving cell of the UE. The LOS detection measurements are received from the at least one of the UE and the plurality of base stations. LOS base stations for the UE are determined based on the LOS detection measurements. An indication of the LOS base stations is transmitted to the UE.

Abstract: A method performed by a user equipment, UE (110, 200) includes obtaining (1202) a Sounding Reference Signal, SRS, configuration from a network node (160) and determining (1204) an SRS waveform and transmitting (1206) the SRS waveform. The SRS waveform is adapted for positioning based on the SRS configuration to have a full bandwidth within a bandwidth applicable for the SRS waveform.

Abstract: There is disclosed a method of operating a network node in a radio access network, the method including transmitting reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, wherein the reference signaling configuration corresponds to a staggered and/or re-ordered comb-n structure for one or more other symbol groups of the slot. The disclosure also pertains to related devices and methods.

Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a method in a wireless device is provided. The wireless device is configured to communicate with a network node. The wireless device receives an extended signal transmitted by the network node. The extended signal includes a base signal and at least one additional signal. The wireless device estimates a time of arrival, TOA, based on the extended signal.

Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.

Abstract: A method, network node and wireless device for position reference signal (PRS) design by extending a base signal are disclosed. According to one aspect, a method in a wireless device (WD) includes obtaining extended reference signal, RS, configurations from the network node. The method also includes determining a waveform associated with the extended RS. The method also includes detecting a RS and estimate an associated time of arrival. The method further includes sending a measurement report to the network node based on the estimated time of arrival.

Abstract: Methods and apparatuses are disclosed for using mirrors for positioning. In one embodiment, a method implemented in a wireless device includes receiving an indication of at least one mirror from a network node, the at least one mirror being used for positioning the wireless device; performing a measurement on at least one reference signal reflected by the indicated at least one mirror; and performing at least one operational task associated with positioning the wireless device based at least in part on the measurement. In one embodiment, a method implemented in a network node includes indicating at least one mirror to a wireless device the at least one mirror being used for positioning the wireless device; and communicating at least one reference signal to the WD, the at least one reference signal to be reflected by the indicated at least one mirror for positioning the wireless device.

Abstract: Embodiments of the disclosure provide methods, apparatus and machine-readable mediums relating to reference signals for positioning in a wireless network. A method performed by a wireless device relating to positioning in a wireless network is provided. The method comprises receiving user data, and a reference signal for positioning in a transmission from a radio network node. The method further comprises rate matching the user data over one or more radio resources not used by the reference signal.

Abstract: Methods and apparatuses are disclosed for beam based positioning measurements and measurement reporting. In one embodiment, a method in a network node includes communicating information to configure a wireless device (WD) with a plurality of positioning reference signals, the communicated information at least indicating which of the plurality of positioning reference signals are transmitted from the same transmission point. In another embodiment, a method in a WD includes receiving information indicating which of a plurality of positioning reference signals are transmitted from the same transmission point, and performing measurements on each of the plurality of positioning reference signals transmitted from the same transmission point.

Abstract: Radio equipment (10) is configured for tap separated channel estimation in a wireless communication system. The radio equipment (10) obtains a channel estimate (16) of a radio channel over which a reference signal (12) is received, and separates the channel estimate (16) into channel estimate components (20) that correspond to respective channel taps (22). The radio equipment (10) then compensates the channel estimate components (20) for Doppler shifts respectively associated with the channel taps (22) to which the channel estimate components (20) correspond. The radio equipment (10) processes the compensated channel estimate components (32) separately. Such processing comprises filtering, interpolating, and/or extrapolating. The radio equipment (10) then de-compensates the processed channel estimate components (34) for the respective Doppler shifts, and forms a combined channel estimate (42) of the radio channel by combining the de-compensated channel estimate components (38).

Abstract: A radio node (14) is configured to perform frequency offset estimation. The radio node (14) in this regard receives a first set (22-1) of reference symbols of a reference signal during respective time resources, and determines a first frequency offset estimate (26-1) using the first set (22-1) of reference symbols. The radio node (14) also receives a second set (22-2) of 5 reference symbols of the reference signal during respective time resources, e.g., using the same local oscillator frequency for down conversion as with the first set (22-1). The radio node (14) further determines, based on the first frequency offset estimate (26-1), a second frequency offset estimate (26-2) using the second set (22-2) of reference symbols. In some embodiments, the radio node (14) determines a third frequency offset estimate as a sum of the first and 10 second frequency offset estimates, and tunes a local oscillator frequency, or performs frequency offset compensation, based on the third frequency offset estimate.

Abstract: A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.

Abstract: A radio node (12, 14) is configured to transmit or receive reference symbols (18) of a reference signal (16) on respective radio resources, including first and second sets (S1, S2) of radio resources that differ in at least one radio resource. The reference signal (16) may be for instance a tracking reference signal (16) configured for time or frequency tracking. The first set (S1) of radio resources includes a first pair of radio resources that are separated from one another in a radio resource domain by a first separation distance (D1). The second set (S2) of radio resources includes a second pair of radio resources that are separated from one another in the radio resource domain by a second separation distance (D2). The radio resource domain may be a time domain or a frequency domain. In one or more embodiments, the second separation distance (D2) is at least twice as large as the first separation distance (D1).