Abstract: A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

Abstract: The invention relates to a method for operating a first access node (100) of a first cellular network in which a first user entity (200) uses a first access technology with at least one first carrier frequency to access a first cell (110) of the first cellular network, the at least one first carrier frequency having a bandwidth. It comprises: determining that a second user entity (400) or a second access node (300) using a second access technology different from the first access technology may operate in the first cell (110) within the bandwidth of the at least one first carrier frequency in order to access a second cellular network, transmitting information to the first user entity (200) by which the first user entity is informed about the fact that the second user entity (400) or second access node may operate in the first cell within the bandwidth of the at least one first carrier frequency using the second access technology.

Abstract: An adaptive receiver for UEs using NOMA-based schemes. One objective is to improve the achievable rate of the weak UE and improve the fairness among the grouped UEs. At the same time, an embodiment gives the chance to reduce the error probability of the strong UE. Thus, compared to conventional NOMA, an embodiment increases the network sum throughput.

Abstract: A radio node is configured to transmit, within a guard band of a first radio access technology (RAT), a radio signal according to a second RAT. The radio node determines, based on a channel bandwidth of the first RAT, one or more transmit parameters for transmission of the radio signal according to the second RAT within the guard band of the first RAT, for transmission of the radio signal to comply with emission limits for the first RAT. The one or more transmit parameters include a frequency position of the radio signal within the guard band for the first RAT. The radio node also configures the radio node with the one or more transmit parameters for transmitting the radio signal according to the second RAT within the guard band of the first RAT.

Abstract: The present disclosure relates to a method and an apparatus for multiple access transmission. The method includes: determining (S401) a first signature allocated to a first transmission; and determining (S402) a second signature allocated to a second transmission. With hopping of the signature, the successful rate of NOMA transmission in the communication system will be improved.

Abstract: A method in a network node is provided. The method comprises determining (1304) a frame structure configuration for a narrowband Internet of Things (NB-IoT) system operating in time division duplex (TDD) mode. The frame structure comprises a plurality of subframes. The plurality of subframes comprises at least one of each of a downlink subframe, an uplink subframe, and a special subframe comprising a gap period during which no transmission occurs. The plurality of subframes is arranged such that the frame structure configuration is compatible with an uplink configuration of the NB-IOT system, e.g. having a subcarrier spacing of 3.75 kHz. The method further comprises communicating the determined frame structure configuration to a wireless device operating in the NB-IoT system.

Abstract: A method performed by network node is provided. A portion of a first scheduled transmission having a first transmission power is received during a first time period based at least in part on a first transmit power parameter. A second scheduled transmission having a second transmission power is received during a second time period that at least partially overlaps the first time period based at least in part on a second transmit power parameter different from the first transmit power parameter. A remaining portion of the first scheduled transmission having a third transmission power is received during a third time period occurring after the second time period based at least in part on a third transmit power parameter different from the second transmit power parameter, the third transmit power parameter being based at least in part on at least one operating condition of the second scheduled transmission.

Abstract: A message and rate based UE grouping system for dense downlink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines whether a first UE and a second UE should be grouped based on a determination of whether there is overlap between a first message for the first UE and a second message for the second UE.

Abstract: An adaptive receiver for UEs using NOMA-based schemes. One objective is to improve the achievable rate of the weak UE and improve the fairness among the grouped UEs. At the same time, an embodiment gives the chance to reduce the error probability of the strong UE. Thus, compared to conventional NOMA, an embodiment increases the network sum throughput.

Abstract: A relay-based data transmission approach to improve the reliability and/or the energy efficiency of uplink NOMA. A relay node (RN) is employed to improve the performance of both weak and strong UEs. In some embodiments, superposition coding and NOMA-based transmission are applied at the RN and the UEs, respectively, to improve the achievable rates of the UEs.

Abstract: An adaptive receiver system for UEs using NOMA. For example, a network node (e.g, an access point, such as a base station) obtains a first set of data points for a first decoding scheme, each data point included in the first set of data points identifying a maximum achievable rate for the first UE and a maximum achievable rate for the second UE. The network node uses the first set of data points, a first rate demand for a first UE, and a second rate demand for a second UE to determine a decoding scheme for decoding a message transmitted by one of the first UE and a transmission point of the network node.

Abstract: A method, system and apparatus are disclosed. A wireless device for communication with a network node is provided. The wireless device is configured with a periodic uplink and downlink configuration. The wireless device includes processing circuitry configured to: receive an indication of a scheduling of a first resource; determine that the scheduling conflicts with a function of the first resource according to the periodic uplink and downlink configuration; and transmit on a second resource that differs from the periodic uplink and downlink configuration and that is different from the first resource where the transmission is based on the determination of the conflict.

Abstract: Embodiments disclosed herein provide a fairness and complexity-constrained uplink NOMA scheme. For example, various embodiments set the power/resource allocation for a particular UE (e.g., a weak UE) such that the minimum rate requirement of the UE is guaranteed, independently of the activation status of another UE (e.g., a strong UE). Additionally, in some embodiments the access point selects whether the UE uses a NOMA or OMA depending on the relative performance gain/cost of NOMA.

Abstract: A method of operating a target radio node in a radio access network is disclosed. The method includes receiving control information transmitted on a control channel, and transmitting acknowledgement feedback pertaining to the control information. The disclosure also pertains to related methods and devices.

Abstract: Embodiments disclosed herein provide an adaptive multiple access scheme. In some embodiments, a UE transmits a message according to a first multiple access scheme and retransmits the message according to a second multiple access scheme. In some embodiments, an access point (AP) receives a message transmitted by the UE according to the first multiple access scheme and receives the message retransmitted by the UE according to the second multiple access scheme.

Abstract: The present disclosure provides techniques for reducing latency of periodic URLLC transmission and other critical data transmission with low latency requirements. To support periodic URLLC traffic, SPS with repetition is used. Before synchronization is achieved, the base station (300, 500) sends to the UE (400, 600) an SPS configuration for a periodic uplink data transmissions. When the starting time of the data transmission is not known, the base station (300, 600) over-provisions SPS resources for the periodic data transmission. Based on the timing of the data transmissions, the base stations (300, 600) adjusts the timing of the SPS configuration.

Abstract: There is disclosed a method of operating a user equipment in a radio access network, the user equipment being configured with a feedback configuration of transmission of feedback signaling by the user equipment. The feedback signaling pertains to subject transmission. The feedback configuration indicates transmission of feedback signaling on a first carrier with a first numerology and according to a configured transmission timing. The method includes transmitting the feedback signaling at an updated transmission timing which is later in time than the configured transmission timing if the configured transmission timing is within a signaling time interval of transmission, by the user equipment, of second signaling on the first carrier. The disclosure also pertains to related methods and devices.

Abstract: Techniques are provided to ensure that a terminal device is able to perform measurements efficiently when an on/off scheme is used by network nodes, particularly in a heterogeneous network environment. An example method, implemented in a network node, comprises obtaining a discovery signal window pattern, the discovery signal window pattern defining one or more discovery signal windows during which each of a plurality of cells is to transmit a corresponding discovery signal, and sending an indication of the discovery signal window pattern to a terminal device.

Abstract: A base station in a communications network broadcasts a cell-specific instruction to a plurality of mobile terminals in a cell served by the base station. The cell-specific instruction indicates that an uplink symbol in each of multiple subsequent subframes has been semi-statically configured for sounding reference signal (SRS) transmission. The base station determines that a first mobile terminal of the plurality of mobile terminals is to use the uplink symbol in a given one of the multiple subsequent subframes for aperiodic SRS transmission, and in response, signals a terminal-specific instruction to the first mobile terminal. The terminal-specific instruction is distinct from the cell-specific instruction and indicates that the first mobile terminal is to use the uplink symbol in the given subframe for aperiodic SRS transmission and not for data transmission.

Abstract: A “smart” hybrid automatic repeat request (HARQ) based method. In a downlink embodiment of the smart HARQ based method, a network node, using a set of one or more radio resources, transmits a first superimposed signal containing a message for a first UE and a second message for a second UE. If the network node receives a NACK from the first UE indicating that it could not decode either the first message or the second message and also receives a NACK from the second UE indicating that it could not decode the second message, the network node initially only retransmits one of the messages.