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: A method performed by user equipment, UE, includes receiving a DL reception and transmitting an UL transmission, wherein there is a collision between the DL reception and the UL transmission. The method also includes prioritizing for processing the DL reception or the UL transmission by applying a particular prioritization rule of a plurality of prioritization rules depending upon a type of the DL reception and/or the UL transmission. The method further includes processing the DL reception or the UL transmission in response to applying the particular prioritization rule.

Abstract: The present application generally relates to wireless communication technology. More particularly, the present application relates to a method and apparatus for scheduling delay associated with HARQ processes in LTE-MTC. The present application also relates to computer program product adapted for the same purpose. According to one embodiment, a method for scheduling delay associated with HARQ processes in LTE-MTC comprises: —a) in response to presence or non-presence of PUCCH repetition, invalid BL/CE DL subframe, invalid BL/CE UL subframe, and measurement gap, determining a HARQ-ACK scheduling counting strategy; and —b) scheduling a HARQ-ACK delay value in accordance with the HARQ-ACK scheduling counting strategy.

Abstract: A method by a wireless device includes obtaining, in a downlink control information (DCI) field, an indication of whether to perform a fallback to a radio resource control (RRC) connection setup or resume procedure or whether to abort a random access attempt. Based on the indication, wireless device determines to perform the fallback to the RRC connection setup or resume procedure or to abort the random access attempt.

Abstract: Systems and methods are disclosed for triggering a long range extension mode of operation for a wireless device in a cellular communications network. In one preferred embodiment, the wireless device is a Machine Type Communication (MTC) device. In one embodiment, a node in the cellular communications network determines that the wireless device is to operate in the long range extension mode if there is difficulty in establishing communication between the wireless device and the cellular communications network. If the wireless device is to operate in the long range extension mode, the node activates one or more long range extension mechanisms with respect to the wireless device such that the wireless device operates in the long range extension mode. In this manner, the long range extension mode is selectively triggered for the wireless device.

Abstract: Systems and methods for efficient signaling Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) for an uplink data transmission are disclosed. In some embodiments, a method of signaling HARQ-ACK feedback for an uplink data transmission sent from a wireless device to a radio network node comprises obtaining HARQ-ACK feedback for the uplink data transmission, encoding the obtained HARQ-ACK feedback on to an unused bit combination of a field in a downlink control channel, and transmitting the downlink control channel to the wireless device. Embodiments of the present disclosure enable wireless device power saving using positive HARQ-ACK feedback without increasing the static downlink control signaling overhead and without reducing coverage for downlink control information.

Abstract: A method performed by a user equipment (UE) in idle mode, for determining common search space (CSS) for NB-IoT paging is disclosed. The method comprises determining a set of periodic subframes as a Paging Occasion (PO) subframe pattern. The method further comprises monitoring a starting subframe of paging CSS for a Radio Network Temporary Identifier (RNTI). The starting subframe of paging CSS is determined as follows: a first subframe (SF0) defined by the Paging Occasion subframe pattern, is used when SF0 is determined to be a valid downlink subframe. A next valid downlink subframe after SF0 is used when SF0 is determined to be an invalid downlink subframe.

Abstract: The load on Random Access channels (N)PRACH (i.e., Msg1) is temporally distributed, to better handle synchronized access peaks from machine type devices. Access attempts by wireless devices are distributed in time, based on their identities (e.g., IMSI, which is used for the distribution of paging load) or random draw. The distribution restricts when 5 wireless devices can access the network, either based on System Frame Number or on random access occurrence. The method is implicit, i.e., after the initial System Information (SI) acquisition, wireless devices will automatically apply temporal network access load distribution according to the configuration provided in SI without any need for explicit signaling or re-acquisition of SI. Embodiments of the invention may be advantageously applied to any wireless 10 communication network supporting machine type communications, such as GPRS/EGPRS/ECGSM-IoT and UMTS/HSPA, as well as non-3GPP radio access technologies such as LoRa, Sigfox, and Ingenu.

Abstract: A base station transmits a resource grant indicating a plurality of options from which a wireless device is permitted to select for use in transmitting user data on an uplink during random access. Each respective option comprises a transport block size (TBS) and a number of repetitions. One of the TBSs is a maximum permitted TBS and the other TBSs are derived from the maximum permitted TBS using a predefined set of smaller TBS values. The number of repetitions of each option is determined as a function of the maximum permitted TBS and a corresponding number of repetitions. The wireless device receives the resource grant and transmits the user data on the uplink during random access to the base station according to at least one of the options. The base station receives the user data on the uplink during random access correspondingly.

Abstract: Systems and methods for selecting subcarriers to be used for sub-Physical Resource Block (PRB) transmission and, in some embodiments, for mapping Demodulation Reference Signals (DMRS) to resources on the selected subcarriers are disclosed. In some embodiments, a method of operation of a radio node for providing sub-PRB transmission comprises selecting two adjacent subcarriers from a set of three allocated subcarriers that are allocated for a sub-PRB transmission that uses Single Carrier Frequency Division Multiple Access (SC-FDMA) Pi/2 Binary Phase Shift Keying (BPSK) modulation using only two adjacent subcarriers out of the set of three allocated subcarriers with Discrete Fourier Transform (DFT) spread length of 2. In some embodiments, the selection is such that the selected adjacent subcarriers varies, e.g., from one cell to another. In doing so, interference is distributed.

Abstract: According to certain embodiments, a method performed by a wireless device includes transmitting, to a base station, a first transmission of a message, which includes user data and information to setup or resume a connection between the wireless device and the base station. DCI comprising an uplink grant indicating a plurality of transport block sizes is received from the base station. The DCI is interpreted based on previous information received in a message from the base station. One of the transport block sizes is selected for retransmission of the message. The message is retransmitted using the selected transport block size and includes either only the information to setup or resume the connection or the information to setup or resume the connection and user data. The message is retransmitted using the selected transport block size.

Abstract: Systems and methods are disclosed herein for Control Resource Set (CORESET) enhancements for initial access. In one embodiment, a method performed by a wireless communication device comprises receiving and decoding a Physical Downlink Control Channel (PDCCH) transmission in a CORESET in accordance with at least a portion of a Control Channel Element (CCE) to Resource Element Group (REG) mapping. The PDCCH transmission comprises one or more CCEs. The CCE to REG mapping comprises an interleaved portion that maps the one or more CCEs to a first set of REGs that are spread across a bandwidth of the CORESET, and a second portion that maps at least a portion of an additional CCE to at least a REG in a frequency gap between two REGs in the first set of REGs, the additional CCE corresponding to one of the CCEs mapped to the first set of REGs.

Abstract: Systems and methods relating to scheduling and transmitting/receiving a segmented Single-Cell Multicast Control Channel (SC-MCCH) are disclosed. In some embodiments, a method of operation of a wireless device to receive a plurality of SC-MCCH segments comprises obtaining information regarding segmentation of a SC-MCCH into a plurality of SC-MCCH segments and receiving, from a network node, separate transmissions for the plurality of SC-MCCH segments in accordance with the information regarding segmentation of the SC-MCCH. By segmenting the SC-MCCH in this manner, increasing the maximum Transport Block Size (TBS) or defining a higher TBS size for SC-MCCH can be avoided.

Abstract: Systems and methods are disclosed for adjusting Radio Link Monitoring (RLM), Radio Link Failure (RLF) detection, RLF recovery, and/or connection establishment failure detection for wireless devices (16) in a cellular communications network (10) depending on mode of operation. In one embodiment, a node (14, 16) in the cellular communications network (10) determines whether a wireless device (16) (e.g., a Machine Type Communication (MTC) device) is to operate in a long range extension mode of operation or a normal mode of operation. The node (14, 16) then applies different values for at least one parameter depending on whether the wireless device (16) is to operate in the long range extension mode or the normal mode. The at least one parameter includes one or more RLM parameters, one or more RLF detection parameters, and/or one or more RLF recovery parameters.

Abstract: Systems and methods for selecting subcarriers to be used for sub-Physical Resource Block (PRB) transmission and, in some embodiments, for mapping Demodulation Reference Signals (DMRS) to resources on the selected subcarriers are disclosed. In some embodiments, a method of operation of a radio node for providing sub-PRB transmission comprises selecting two adjacent subcarriers from a set of three allocated subcarriers that are allocated for a sub-PRB transmission that uses Single Carrier Frequency Division Multiple Access (SC-FDMA) Pi/2 Binary Phase Shift Keying (BPSK) modulation using only two adjacent subcarriers out of the set of three allocated subcarriers with Discrete Fourier Transform (DFT) spread length of 2. In some embodiments, the selection is such that the selected adjacent subcarriers varies, e.g., from one cell to another. In doing so, interference is distributed.

Abstract: A method implemented by a user equipment (UE) in a communication network is provided. The method includes receiving, from a network node, a delay indicator that indicates a scheduling delay for Physical Downlink Shaved Channel, PDSCH, and the UE counts the scheduling delay for the PDSCH according to the received indicator.

Abstract: The embodiments herein relate to a user equipment (121) and a method performed by the UE (121) for performing preamble transmissions, on a random access channel, to a network node (110). The method comprising: determining (801) a starting subframe for the preamble transmissions based on at least a system frame number (SFN), a number of times (R) the preamble transmissions is to be repeated and a random access channel configuration, and transmitting (802), to the network node (121) the preamble repeatedly starting in the determined starting subframe. The embodiments herein also relate to a network node (110) and a method performed by the network node (110).

Abstract: A method performed by a wireless device. The wireless device sends an indication to a network node including a value corresponding to a size of a buffer of detected or expected to be had during inactive state at a time of one or more transmissions. The sending is performed with the proviso that the size of the buffer is smaller than a threshold. The wireless device receives a grant from the network node based on the indication, and then sends data to the network node during inactive state, according to the grant received. The sending of the data is performed with the proviso that the size of the buffer is smaller than the threshold. The sending of the indication is performed prior to the sending of one or more data packets comprising at least a part of the first data.

Abstract: Embodiments include methods for a user equipment (UE) to provide downlink (DL) channel-quality reports during a random-access (RA) procedure in a cell provided by a network node in a radio access network (RAN). Such embodiments include receiving, from the network node, a first indicator indicating that the UE may have to report DL channel quality in a particular message of the RA procedure; and initiating the RA procedure. The UE may be configured to operate in a coverage-enhancement (CE) mode. Such embodiments can also include initiating DL channel quality measurements based on the first indicator, wherein the DL channel quality measurements can be initiated before receiving a RA response from the network node. Other embodiments include complementary methods performed by a network node, as well as UEs and network nodes configured to perform the respective methods.

Abstract: A method performed by a network node, for controlling access of a first User Equipment (UE) and a second UE to a cell in a radio communications network is provided. The first UE is of a low complexity type, and wherein the second UE is of a regular type. A first association is assigned to the first UE. The first association associates the first UE with its low complexity type. A second association is assigned to the second UE. The second association associates the second UE with its regular type. The network node controls (302) access of the first UE and second UE by sending a rule to the first UE and second UE. The rule is related to access control that is different for UEs with different associations, for accessing to the radio communications network.