Telefonaktiebolaget Lm Ericsson (publ)

Florent Munier

Ritesh Shreevastav

Iana Siomina

Robert Mark Harrison

Per Ernström

Gerardo Agni Medina Acosta

Fredrik Gunnarsson

Shiwei Gao

Siva Dharshan Muruganathan

Erik Stare

Waikwok Kwong

Satyam Dwivedi

Deep Shrestha

Johannes Nygren

Muhammad Ali Kazmi

Mattias Frenne

Stephen J Grant

Gregory Edward Bottomley

Lars Lindbom

Erik G Larsson

Jingya Li

Santhan Thangarasa

Nianshan Shi

Zhenhua Zou

Gino Masini

Kazuyoshi Uesaka

Åke Busin

Mark Curran

Henrik Sahlin

Sebastian Faxér

Niklas Andgart

Laetitia Falconetti

Sara Modarres Razavi

Magnus Sandgren

Kittipong Kittichokechai

Alexey Shapin

Peter Hammarberg

Yazid Lyazidi

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

Methods and apparatuses to account for timing errors of a user equipment in positioning measurements

A method, wireless device and network node for multiplexing demodulation reference signals, DMRS, during short transmission time intervals, sTTIs. According to one aspect, a method includes generating an indication of an interleaved frequency division multiple access, IFDMA, subcarrier configuration for DMRS transmission. The method further includes transmitting to the wireless device the indication of IFDMA subcarrier configuration.

Signaling of demodulation reference signal configuration for uplink short TTI transmissions

Embodiments 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). An example 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.

Signalling support for NR positioning with aperiodic SRS configurations

In an example arrangement, a base station () serving a wireless device () controls the activation time for transmission by the wireless device () of aperiodic or semipersistent Sounding Reference Signals (SRS), but accounts for an activation-time recommendation made by a location server () with which the serving base station () provides its timing information. The arrangement allows the location server (), which has a view of the overall timeline, to recommend an activation time while still leaving the serving base station () in control of the activation time, which the serving base station () shares with the location server (). In turn, the location server () uses the activation time to configure neighboring base stations (), for example, for coordinated reception of the SRS, for positioning the device () via Uplink Observed Time Difference of Arrival (UTDOA) determinations. Activation of the SRS provides, for example, increased SRS density as compared to any ongoing periodic SRS transmissions performed by the wireless device ().

Methods and apparatus for controlling uplink reference signal transmissions in a wireless communication network

Systems and methods for relocating network nodes are provided herein. A network node can determine that relocation of at least one access node in the access network is required. An access node, such an IAB node with mobile capabilities, can be selected to be relocated from a first position to a second position. Relocation messages and parameters can be signaled between the network and the access node.

Dynamic relocation of nodes in a cellular network

Embodiments include methods performed by a user equipment (UE) of associating positioning signals with beams transmitted in a wireless network that includes a location server and a base station. Such methods include receiving assistance data from the location server. The assistance data includes a configuration of positioning signals to be transmitted by the wireless network and information identifying at least one relationship between the following: one or more positioning beams that carry the positioning signals, and one or more radio resource management (RRM) beams that carry RRM signals. Such methods include receiving, from the base station, the positioning signals via the one or more positioning beams based on the at least one relationship between the positioning beam(s) and the RRM beam(s). Other embodiments include complementary methods for base stations and location servers, as well as UEs, base stations, and location servers configured to perform such methods.

Co-existence between positioning beams and radio communication beams

A method performed by a user equipment, UE includes obtaining a Sounding Reference Signal, SRS, configuration from a network node and determining an SRS waveform and transmitting 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.

Methods and apparatuses for positioning based on the sounding reference signal

Methods and apparatuses are disclosed for flexible reconfiguration of the sounding reference signal (SRS). In one embodiment, a method implemented in a network node includes signaling a sounding reference signal (SRS) configuration, the SRS configuration including an SRS configuration parameter that indicates whether to use one of a staggered comb and a non-staggered comb for an SRS transmission; and receiving the SRS transmission according to the one of the staggered comb and the non-staggered comb indicated by the SRS configuration parameter. In one embodiment, a method implemented in a WD includes receiving a SRS configuration, the SRS configuration including an SRS configuration parameter that indicates whether to use one of a staggered comb and a non-staggered comb for an SRS transmission; and transmitting the SRS transmission according to the one of the staggered comb and the non-staggered comb indicated by the SRS configuration parameter.

Flexible reconfiguration of the sounding reference signal

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.

Wireless device, network node and methods performed therein for time of arrival estimation

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.

Methods, apparatus and machine-readable mediums relating to reference signals for positioning in a wireless network

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.

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.

PRS design by extending the basic signal

A method performed by a User Equipment (UE) for transmitting Uplink (UL) signals for positioning purpose in a wireless communications network is provided. The UE receives () from a second network node, a UL signal switching configuration, and a UL signal configuration to transmit UL signals for positioning purpose on one or more carriers where the UE does not transmit user data. The UE further receives () from the second network node a UL signal switching order. The UE then switches () to at least one carrier where the UE does not transmit user data, to transmit the UL signals for positioning purpose. The UE then switches back () to a carrier where the UE transmits user data.

SRS switching for UL positioning signal transmission

A method, system and apparatus are disclosed. A network node configured to communicate with a wireless device (WD) is provided. The network node is configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to: determine a radio link monitoring (RLM) state of a wireless device that is served by a first cell and configured to operate with at least a first operational mode and a second operation mode within an overlapping time, and schedule at least one signal associated with the wireless device based on the RLM state.

Methods for managing parallel measurement gap patterns for radio resource management and positioning measurements

Methods, wireless devices and network nodes for avoiding collision between a downlink control channel and a aperiodic channel state information reference signal, aperiodic CSI-RS, are provided. According to some aspects, a method is provided that includes receiving an aperiodic channel state information reference signal, aperiodic CSI-RS, based on an assumption that the aperiodic CSI-RS is not present in physical layer resources corresponding to a downlink control channel set.

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Västra Frölunda, Sweden

Florent Munier