Abstract: A method is provided by a user equipment (UE) for determining whether System Information (SI) message accumulation is prohibited or allowed. The method includes obtaining information about SI message accumulation. Based on the information, the UE determines whether SI message accumulation is prohibited or allowed in a Non-Terrestrial Network (NTN) cell.

Abstract: A technique for supporting mobility (602; 602?) of a radio device (100; 800; 1091; 1092; 1130) between a terrestrial network, TN (210), and a non-terrestrial network, NTN (500), is described. As to a method aspect of the technique performed by the radio device (100; 800; 1091; 1092; 1130), a control message (520) is received from at least one TN node (200; 900; 1012a; 1012c; 1120) of the TN (210) at the radio device (100; 800; 1091; 1092; 1130). The control message (520) is indicative of at least one NTN cell (512) of the NTN (500) for supporting the mobility (602) of the radio device (100; 800; 1091; 1092; 1130) between the TN (210) and the NTN (500).

Abstract: A method performed by a wireless device (131). The wireless device (111) operates in a wireless communications network (100). The device monitors (504), in sleep mode, using a first receiver, which is a WUR, whether a first radio signal is received. The signal indicates the device is in coverage of a node (101). The monitoring (504) is performed with the proviso the device has obtained information to send. The device also sends (508) the information based on whether it receives the signal. If the device receives the signal, the signal wakes-up a second receiver, sends the information using the second receiver, goes back to sleep, and c) refrains from monitoring (504) with the proviso the device lacks further information to be sent. If the device fails to receive the signal, it stores the information and b) stays in sleep mode, until it sends the information, using the second receiver, when the wireless device (131) receives the signal.

Abstract: Embodiments herein disclose e.g. a method performed by a wireless device (10) for handling communication for the wireless device in a second wireless communication network. The second wireless communication network coexists with a first wireless communication network on a same bandwidth in frequency, wherein the first wireless communication network applies a first shift in frequency in uplink transmissions. The wireless device receives from a radio network node (12, 13), an indication indicating application of a second shift in frequency to uplink transmissions in case the second wireless communication network uses Frequency Division Duplex (FDD). The wireless device further applies the second shift in frequency to uplink transmissions, wherein the second shift defines a shift in frequency to a subcarrier relative to a subcarrier grid of the second wireless communication network or a shift in frequency to the subcarrier grid of the second wireless communication network.

Abstract: Methods performed by base stations and wireless devices for reducing RSRP and/or RSRQ measurements are disclosed. A method performed by a base station comprises indicating to a wireless device whether or not to perform cell selection and/or reselection measurements based on certain criteria. A method performed by a wireless device comprises determining whether or not to perform cell selection and/or reselection measurements based on certain criteria. Also disclosed are base stations and wireless devices configured to perform the methods.

Abstract: Embodiments of methods for providing timing advance change detection are disclosed. In some embodiments, a method performed by a wireless device for determining a validity of a timing advance configuration of the wireless device for an idle mode transmission comprises obtaining, while the wireless device is operating in a connected mode, a timing advance value for the wireless device. The method further comprises transitioning from the connected mode to an idle mode, and performing a measurement on one or more serving cells of the wireless device while the wireless device is in the idle mode. The method also comprises determining whether the timing advance is valid for an idle mode transmission based on the measurement. In some embodiments, the measurement may be a signal strength measurement such as, e.g., a Reference Signal Received Power measurement and/or a signal quality measurement such as, e.g., a Reference Signal Received Quality measurement.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node for communicating with a wireless device is provided. The network node includes processing circuitry configured to receive measurement capability information of a wireless device where the measurement capability information indicates an ability to perform a global navigation satellite system, GNSS, measurement. The processing circuitry is further configured to determine a GNSS measurement gap configuration during which the wireless device is to perform at least one GNSS measurement during at least one GNSS measurement gap where the GNSS measurement gap configuration is based at least in part on the received measurement capability information, and indicate the GNSS measurement gap configuration to the wireless device.

Abstract: In some embodiments, a method performed by a wireless device comprises: obtaining a timing advance (TA) value for uplink transmissions; receiving a grant for a radio resource control (RRC) inactive mode uplink transmission; measuring a reference signal associated with each beam of a plurality of beams at a first time; selecting a first beam based on the measured reference signals; measuring a reference signal associated with each beam of a plurality of beams at a second time in preparation for the RRC inactive mode uplink transmission; selecting a second beam for which the measuring was performed at the second time; and when the first selected beam is the same as the second selected beam and the reference signal for the first selected beam is within a threshold value of the reference signal for the second selected beam, transmitting the RRC inactive mode uplink transmission using the obtained TA.

Abstract: There is provided a method performed by a wireless device for communicating with a network node in a wireless communication network. The method includes using a field in a Master Information Block (MIB) received by the wireless device, as an indication of a presence of an extended MIB (eMIB) and identifying which candidate resource of at least one candidate resource that contains the eMIB based on the indication of the presence of the eMIB. There is also provided a corresponding wireless device for communicating with a network node, a method perform by a network node, and a network node.

Abstract: Embodiments include methods for operating a network node in a non-terrestrial network (NTN). Such methods include transmitting, to one or more user equipment (UEs), a first indication of at least one polarization mode configured for use in a first cell of the NTN and a second indication of at least one polarization mode configured for use in a second cell of the NTN. The polarization mode(s) configured for use in the first cell includes right-hand circular polarization and the polarization mode(s) configured for use in the second cell includes left-hand circular polarization. Alternately, the polarization mode(s) configured for use in the first cell includes left-hand circular polarization and the polarization mode(s) configured for use in the second cell includes right-hand circular polarization. Other embodiments include complementary methods for UEs, as well as network nodes and UEs configured to perform such methods.

Abstract: A method, system and apparatus for supporting coexistence in the presence of non-terrestrial networks are disclosed. According to one aspect, a method in a network node of a first radio network includes obtaining information of at least one measurement of a signal transmitted from a non-terrestrial network, NTN, node of a second radio network. The method also includes evaluating, based at least in part on the obtained information of the at least one measurement, whether criteria for coexistence of the first radio network with a second radio network are met.

Abstract: A first communication node (12) in a wireless communication network (10) monitors for a cell-specific wake-up signal (20). The first communication node (12) may monitor for the cell-specific wake-up signal (20) with a wake-up receiver (12W). The first communication node (12) in particular may monitor for a cell-specific wake-up signal (20) that is any of multiple cell-specific wake-up signals (20) in a set. In some embodiments, the set is re-used for different sets of cells. Alternatively or additionally, the set may include cell-specific wake-up signals (20) that are based on multiple respective binary sequences, based on different codewords of a binary error correcting code, based on different orthogonal sequences in a set, composed of different sets of Zadoff-Chu sequences with different roots, composed of the same set of Zadoff-Chu sequences with different cyclic shifts, or a function of different cyclic shifts of a root wake-up signal formed by multiple Zadoff-Chu sequences with different roots.

Abstract: Methods performed by base stations and wireless devices for reducing RSRP and/or RSRQ measurements are disclosed. A method performed by a base station comprises indicating to a wireless device whether or not to perform cell selection and/or reselection measurements based on certain criteria. A method performed by a wireless device comprises determining whether or not to perform cell selection and/or reselection measurements based on certain criteria. Also disclosed are base stations and wireless devices configured to perform the methods.

Abstract: A first communication node (12) monitors for a wake-up signal (20) during a wake-up signal occasion (20-O), and monitors for a synchronization signal (16) in a synchronization signal occasion (16-O). In one embodiment, the synchronization signal occasion (16-O) at least partially overlaps in time with the wake-up signal occasion (20-O). In another embodiments, the synchronization signal occasion (16-O) occurs in time before or after the wake-up signal occasion (20-O). In this latter case, the synchronization signal occasion (16-O) and the wake-up signal occasion (20-O) may be consecutive occasions in time or may have a gap in time between them. In case there is a gap in time between the occasions, the gap may be a function of a cell identifier, a carrier frequency, a numerology or subcarrier spacing, a periodicity of the wake-up signal occasion (20-O), and/or a discontinuous reception cycle length.

Abstract: Embodiments include methods for operating a network node in a non-terrestrial network (NTN) that utilizes one or more polarization modes for serving one or more cells. Such methods include transmitting, to one or more user equipment (UEs), an indication of at least one polarization mode configured for use in a first cell of the first NTN. The at least one polarization mode can be indicated in various ways, both explicitly and implicitly. Such methods also include transmitting and/or receiving one or more signals or channels in the first cell according to one or more configured polarization modes including the at least one indicated polarization mode. Other embodiments include complementary methods for operating UEs, as well as network nodes and UEs configured to perform such methods.

Abstract: Systems and methods are disclosed herein for frequency adjustment in a wireless network, particularly a Non-Terrestrial Network (NTN). Embodiments of a method performed by a User Equipment (UE) are disclosed. In one embodiment, a method performed by a UE for compensating for a Doppler shift in a wireless network comprises obtaining, from a network node, a characterization of Doppler variations in a particular cell. The method further comprises tuning a local frequency reference, fRef, of the UE to a received downlink frequency for the particular cell and adjusting the local frequency reference, fRef, over time according to the pre-calculated characterization of Doppler variations in the particular cell. In this manner, the communication between the UE and the network node in the presence of large and varying Doppler shifts is enabled. Embodiments related to compensating for timing drift are also disclosed.

Abstract: Embodiments of methods for providing timing advance change detection are disclosed. In some embodiments, a method performed by a wireless device for determining a validity of a timing advance configuration of the wireless device for an idle mode transmission includes obtaining, while the wireless device is operating in a connected mode, a timing advance value for the wireless device. The method further includes transitioning from the connected mode to an idle mode, and performing a measurement on one or more serving cells of the wireless device while the wireless device is in the idle mode. The method also includes determining whether the timing advance is valid for an idle mode transmission based on the measurement. In some embodiments, the measurement may be a signal strength measurement, such as a Reference Signal Received Power measurement and/or a signal quality measurement such as, a Reference Signal Received Quality measurement.

Abstract: A wireless communication device (12) is configured for use in a wireless communication network (10). The wireless communication device (10) switches from a first state (S1), in which wireless communication equipment (16) of the wireless communication device (12) keeps track of time, to a second state (S2) in which the wireless communication equipment (16) does not keep track of time. Before or as part of switching from the first state (S1) to the second state (S2). the wireless communication device (12) obtains a time reference (22). While in the second state (S2), the wireless communication device (12) stores the time reference (22) in memory (24). After or as part of switching from the second state (S2) to the first state (S1), the wireless communication device (12) resumes track of time using the time reference (22).

Abstract: A method is performed by a wireless device for performing a random access. In response to a received paging transmission, and when certain conditions are met, the wireless device randomly selects a random access resource from a plurality of available random access resources. The available random access resources may be spread in time, or in frequency, or in time and frequency. The wireless device then transmits a random access signal on the selected random access resource.

Abstract: Disclosed is a method for scheduling transmissions of multiple carriers from a single transmitting network node (10; 100) for multiple Narrow Band Internet of Things (NB-IoT) cells, (50). The multiple carriers comprising a respective cell specific anchor carrier having NB-IoT sub-frames allocated for the transmission of mandatory information related to the functionality of the specific cell. The method comprises scheduling (S1) at least two cell specific anchor carriers using time interleaved transmissions that enables NB-IoT sub-frames belonging to different cell specific anchor carriers, and being allocated for the transmission of the mandatory information, to be transmitted at non-overlapping times.