Abstract: A method performed by a wireless device for determining a timing advance (TA) offset in a new radio (NR) network is described herein along with associated network devices and systems. An exemplary method includes obtaining an indication of whether a carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network, determining, based on whether the carrier frequency of the NR network coexists with carrier frequency of the LTE network, a TA offset for uplink transmission; and transmitting an uplink transmission using the determined TA offset.

Abstract: A radar sensing function is performed in a mobile communication device that operates in a Time Division Duplex (TDD) wireless communication system having an air interface that comprises a plurality of uplink symbol times associated with symbols transmitted in an uplink direction and a plurality of downlink symbol times associated with symbols transmitted in a downlink direction, and in which each transmitted symbol from a plurality of transmitted symbols has a corresponding cyclic prefix that is transmitted immediately before the corresponding transmitted symbol, and that is a repetition of an end part of the corresponding transmitted symbol. Information about a path delay between the mobile communication device and a receiver is used as one of one or more bases to determine a timing of a radar operation window having a duration that is shorter than a duration of a cyclic reception window of the receiver and comprising a radar signal transmission time and a radar backscatter reception period.

Abstract: A radar sensing function is performed in a mobile communication device that operates in a Time Division Duplex (TDD) wireless communication system having an air interface that comprises a plurality of uplink symbol times, a plurality of downlink symbol times, a plurality of TDD transmission direction transition periods, and a plurality of transition pairs of symbol times, wherein each of the transition pairs of symbol times comprises one of the uplink symbol times and one of the downlink symbol times, and each of the TDD transmission direction transition periods is associated with one of the plurality of transition pairs of symbol times and is immediately preceded by a first one of the uplink and downlink symbol times of the associated transition pair of symbol times and is immediately followed by a second one of the uplink and downlink symbol times of the associated transition pair of symbol times.

Abstract: A wireless system comprises a controlling node and multiple antenna processing nodes coupled to the controlling node but separated from each other. The controlling node receives (720) first soft bit information from a first antenna processing node, the first soft bit information corresponding to reception of a wireless transmission. Responsive to determining that it cannot decode transmitted bits using the first soft bit information, the controlling node requests (730) and receives (740) second soft bit information from a second antenna processing node, the second soft bit information also corresponding to the first wireless transmission from the wireless device and having been buffered by the second antenna processing node. The controlling node decodes (750) bits from the first wireless transmission using both the first and second soft bit information. The controlling node may then signal the antenna processing nodes that they can discard buffered information for the wireless transmission.

Abstract: A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.

Abstract: An example method according to some of the techniques described below is performed by a device operating in a wireless network, where the device could be a UE or a network node, e.g., an NR gNB. This example method includes the step of determining (610) whether a receive-to-transmit or transmit-to-receive switching limitation of a UE can be met during a dual-active protocol stack handover for the UE from a source cell to a target cell. The method further includes the step of taking one or more mitigation actions (620) in response to said determining. Mitigation actions might include, for example, stopping a downlink reception early or starting a scheduled transmission late, in various embodiments or instances.

Abstract: A method performed by a transmitting device, for handling communication in a wireless communications network. The transmitting device transmits a Precision Time Protocol, PTP, message carrying synchronization information to a receiving device over a radio interface.

Abstract: A method, system and apparatus are disclosed for a network node configured to communicate with a wireless device (WD). In some embodiments, the network node includes processing circuitry configured to cause the network node to determine delay offset information based at least in part on a common distance for a cell, the delay offset information indicating a common temporal delay offset and transmit the delay offset information to the WD in at least one of a system information block, SIB, and a radio resource control, RRC, message. In some embodiments, a wireless device includes processing circuitry configured to cause the wireless device to receive delay offset information in at least one of a system information block, SIB, and a radio resource control, RRC, message, the delay offset information being based at least in part on a common distance and the delay offset information indicating a common temporal delay offset.

Abstract: A first antenna processing node receives (710) one or more wireless transmissions from a wireless device and obtains first symbol values from the one or more wireless transmissions. The first antenna processing node receives (720) second symbol values from a second antenna processing node, the second symbol values corresponding to the one or more wireless transmissions as received at the second antenna processing node, and calculates (730) a first weight parameter based on at least a subset of the first symbol values and a corresponding subset of the second symbol values. The first antenna processing node calculates (740) third symbol values by computing a weighted sum of first symbol values and corresponding ones of the second symbol values, using the first weight parameter, and sends (750) the third symbol values to a third antenna processing node or to a controlling node. This combining of symbol values may approximate maximum ratio combining, MRC.

Abstract: A group of radio network nodes (14) performs automatic synchronization source selection using Radio-interface Based Synchronization, based on the exchange of clock-attribute information between respective nodes (14) via inter-node connections. Access to the clock-attribute information for other nodes (14) in the same domain or subdomain allows a given node (14) to select the best or most preferred synchronization source for use in synchronizing its own clock (44), based on a combined or joint evaluation of parameters or metrics that include the reception quality of OTA signals from respective ones of the candidate nodes (14) and the corresponding clock-attribute information. Further parameters or metrics may be evaluated in the selection, such as neighbor-relation considerations. The combined use of OTA synchronization signaling and clock-attribute information exchanges, e.g.

Abstract: A method, network node and wireless device (WD) for adaptation of maximum operational timing difference (MOTD) for intra-band multicarrier operation based on number of independent timing management groups are disclosed. According to one aspect, a process in a network node includes determining a 5 maximum operational time difference parameter based on a number (N) of transmit timing management groups (TMG) configured at a WD. The process also includes operating to receive or transmit at least one of a: signal S1 between the WD and a first cell and signal S2 between the WD and a second cell based on the determined MOTD parameter. The process also includes using the determined MOTD parameter for one 10 or more operational tasks.

Abstract: Methods and apparatuses for determining asynchronization between a first clock used by a first node (N1) and a second clock used by a second node (N2). A sequence of time differences is measured based on a sequence of signals periodically sent by the second node (N2) and received by the first node (N1), wherein each time difference of a signal is between a respective transmission timestamp in accordance with the second clock and a respective receiving timestamp in accordance with the first clock; and at least one of a relative phase offset or a relative frequency offset between the first and the second clock is estimated based on the sequence of time differences.

Abstract: In some embodiments, a network node (e.g., a base station) collects information pertaining to components that form a Maximum Received Timing Difference (MRTD). For instance, the network node determines TAE. The network node then evaluates, for a particular UE, whether a certain MRTD requirement (MRTDR) for a specific coordinated service (CS) can be fulfilled. If the requirement can be met, then the network node may initiate the specific CS for the UE (or continue providing the CS), and if the requirement cannot be met, then the network node may stop or modify the CS for the UE.

Abstract: A radar-enabled wireless communication device (12) is configured for exchanging communication signals with a wireless communication network (10) and for performing radar transmissions for surrounding-environment sensing. The device (12) classifies radar beam directions (30) as restricted or unrestricted, based on known or estimated interference with Uplink (UL) reception operations of the network (10) and adapts its radar transmissions based on the classifications. Classification operations may be autonomous, without requiring explicit network support, or may be based on one or radio network nodes (22) of the network (10) performing supporting procedures. Updating the classifications depends on, for example, one or more triggering conditions, such as changes in the position or orientation of the device (12), transmit-frequency changes, and changes in ambient conditions, such as the presence or intensity of rain.

Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.

Abstract: One or more network nodes are configured for operation in a wireless communication network and, specifically, are configured to provide for co-existence between radar-scanning operations of a radar-enabled UE and network communications, where the radar transmissions are in a same or overlapping frequency range as regards the network communications. In an example implementation, a radio network node, referred to as an CONFIGURE ONE OR MORE access point or base station supports coexistence between radar sensing and network communications that are subject to interference from the radar sensing.

Abstract: Methods and apparatus are provided. In an example aspect, a method (300, 400, 500) of estimating a location of a User Equipment (UE) is provided. The method comprises determining (302) whether a signal transmitted between the UE and a first network node has a line-of-sight (LoS) path between the UE and the first network node, and estimating (304) the location of the UE based on the signal received at the first network node and based on whether the signal has a LoS path.

Abstract: A radar-enabled wireless communication device (12) is configured to communicate with a wireless communication network (10) and performs radar transmissions using a same or overlapping millimeter wave (mmW) frequency range, determine whether there are any neighboring wireless communication devices (32) that are vulnerable to interference from the radar transmissions and, if so, adapt radar transmissions in the affected radar beam directions or transmit assistance information enabling the vulnerable devices (32) to mitigate or avoid the interference. In a particular example, the wireless communication device (12) performs radar transmissions during a Downlink (DL) phase of the wireless communication network (10), such that the vulnerability determinations are with respect to DL interference at the neighboring wireless communication devices (32).

Abstract: Systems and methods to enable 5G system support for conveying time synchronization are provided. In some embodiments, a method performed by a wireless device for conveying external time domain information is provided. The method includes receiving a message in a first time domain used by the wireless device, the message comprising external time domain information; determining information about a second time domain based on the external time domain information; and conveying information about the second time domain to another node. In some embodiments, timing information is included into a GPRS Tunneling Protocol (GTP) payload, and the wireless device can get timing information directly from the data payload. This minimizes the RAN and/or gNB impact and adds the potential for multiple time domain support.

Abstract: A distributed wireless system comprises a controlling node (20) and two or more antenna processing nodes (22) communicatively coupled to the controlling node (20) but spatially separated from each other and from the controlling node (20). A method in the controlling node (20) comprises controlling (1110) a first subset of the antenna processing nodes (22) to transmit synchronization signal blocks, SSBs, having a first SSB identifier, the first subset including one or more of the antenna processing nodes, and controlling (1120) a second subset of the antenna processing nodes (22) to transmit SSBs having a second SSB identifier, the second subset including one or more of the antenna processing nodes (22) and being disjoint with the first subset.