Abstract: The present application discloses a downlink channel receiving method and a terminal device, including: receiving, by a terminal device, first downlink authorization information and second downlink authorization information that are sent by a network device, where the first downlink authorization information is used to indicate that the terminal device receives a first physical downlink shared channel PDSCH in a first time unit, the second downlink authorization information is used to indicate that the terminal device receives a second PDSCH in a second time unit, and at least one symbol of the first time unit and at least one symbol of the second time unit overlap in a time domain; determining, by the terminal device, according to a RNTI used to scramble the first downlink authorization information and the second downlink authorization information, a PDSCH that is preferentially decoded from the first PDSCH and the second PDSCH.

Abstract: Embodiments of a User Equipment (UE), generation Node-B (gNB) and methods of communication are generally described herein. A radio frame may be configured for time-division duplexing (TDD) operation, and may comprise: one or more downlink subframes, one or more uplink subframes, and a special subframe that occurs immediately after one of the downlink subframes and immediately before one of the uplink subframes. The UE may receive a narrowband physical downlink shared channel (NPDSCH) sent at least partly in the special subframe. The UE may, if a number of repetitions of the NPDSCH is greater than one, decode the NPDSCH based on a de-puncture operation for the special subframe. The UE may, if the number of repetitions of the NPDSCH is equal to one, decode the NPDSCH based on a rate match operation for the special subframe.

Abstract: According to one embodiment of the present invention, a method by which a terminal configured to have two or more processing times transmits a hybrid automatic repeat request-acknowledgment (HARQ-ACK) in a wireless communication system comprises the steps of: receiving, from a base station, a downlink control channel for indicating a downlink data channel, and the downlink data channel in one or more downlink subframes; and transmitting, to the base station, HARQ-ACK information on the downlink data channel in an uplink subframe corresponding to the one or more downlink subframes, wherein the HARQ-ACK information transmitted in the uplink subframe includes HARQ-ACK information on a downlink data channel in accordance with only one processing time among the two or more processing times, and cannot include HARQ-ACK information on a downlink data channel in accordance with the rest processing times.

Abstract: The present invention relates to a method for receiving a signal in a wireless communication system supporting narrowband Internet of things (NB-IoT) operated in time division duplex (TDD) and a device therefor, the method comprising the steps of: configuring a search space for a physical downlink control channel; and monitoring the physical downlink control channel on the basis of the configured search space, wherein the search space is configured by a TDD special subframe from which aggregation level 1 has been excluded, and the TDD special subframe indicates a subframe including a downlink period, a guard period, and an uplink period.

Abstract: Disclosed is a method for receiving a downlink signal by a terminal in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a network, information on at least two first-type reference signal port groups and information on at least two second-type reference signal port groups; and receiving, from at least two transmission points constituting the network, a downlink signal including at least two codewords by using the information on the at least two first-type reference signal port groups and the information on the at least two second-type reference signal port groups, wherein the at least two first-type reference signal port groups correspond to different transmission points and the at least two second-type reference signal port groups correspond to different codewords.

Abstract: A wireless device receives configuration parameters of a first uplink carrier and a second uplink carrier of an unlicensed cell. A switch is made from the first uplink carrier to the second uplink carrier. A first contention window size determining based on the switch. Based on the first contention window size, a listen before talk procedure is performed for transmission of a transport block in one or more subbands of the second uplink carrier. A transport block is transmitted based on the listen before talk procedure indicating a clear channel.

Abstract: Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

Abstract: A data transmission method is provided. The method include, when the new data needs to be transmitted, starting from a first available transmission opportunity from among available transmission opportunities, attempting, in each available transmission opportunity of the available transmission opportunities, to acquire a protocol data unit generated by a media access control layer according to the new data; and when the protocol data unit is acquired, instructing, according to the number of times, a cycle period and a start time, an HARQ process to transmit the protocol data unit to the base station in each retransmission opportunity starting from the available transmission opportunity corresponding to the acquisition of the protocol data unit.

Abstract: Provided are a data transmission method, a terminal device and a network device. The method comprises: a terminal device receiving indicator information, said indicator information being used for the terminal device to determine a first transmission power for uplink data in a target time unit; the terminal device determining the first transmission power according to the indicator information; the terminal device sending uplink data to a first network device in accordance with the first transmission power in the target time unit. A data transmission method embodied in the present invention can effectively increase a data transmission success rate.

Abstract: A multi-hop relay network comprises a set of data nodes arranged in a relay topology, wherein the set of data nodes communicate with one another via a data plane comprising a set of high frequency data links, such as mmWave links. An edge node communicates with one or more of the set of data nodes via the data plane and communicates with the set of data nodes over a control plane comprising a set of low frequency wireless links, such as a Wi-Fi network. The edge node determines a path utilization for the set of high frequency wireless links. When one of the high frequency wireless links is over-utilized, the edge node communicates, to a data node in the set of data nodes via the control plane, a command to change the relay topology. The edge node also determines whether the relay topology is operating at a target accuracy. When it is not, the edge node adjusts a data analytics parameter for a node to improve the overall accuracy of the network.

Abstract: A wireless transmit/receive unit (WTRU) may determine physical uplink control channel (PUCCH) resources for a PUCCH based on a number of hybrid automatic repeat request (HARQ) bits and based on a parameter. The WTRU may determine a format of the PUCCH based on symbols for uplink control information (UCI) and based on the number of HARQ bits.

Abstract: A wireless device receives configuration parameters of a first bandwidth part and a second bandwidth part of an unlicensed cell. An active bandwidth part is switched from the first bandwidth part to the second bandwidth part. A first contention window size determined based on the switching. Based on the first contention window size, a listen before talk procedure is performed for transmission of a transport block in one or more subbands of the second bandwidth part. A transport block is transmitted based on a listen before talk procedure indicating a clear channel.

Abstract: A method and apparatus are provided for delivering user equipment (UE) new radio (NR) security capabilities and mobility management entity interworking. In the embodiments, adding the UE NR security capabilities in a new information element over a non-access stratum (NAS) is compatible with a legacy mobility management entity and eliminate any potential of bidding-down attack and is more advantageous and serves the security solution better. As long as the UE is connected to the long term evolution (LTE) and all UE security capabilities including LTE security capabilities have been replayed correctly and successfully in the NAS security mode command (SMC) message, the UE may not consider the absence of the UE NR security capabilities in the NAS SMC as a security vulnerability.

Abstract: A user equipment is configured with at least two collections of uplink resources to be used for transmitting control information to a communication network. The UE receives an assignment of radio resources to be used for receiving a downlink transmission from a base station of the communication network. The UE receives an acknowledgement resource indication, ARI, indicating one of the configured collections of uplink resources to be used for transmitting control information associated with the DL transmission. Further, the UE transmits the control information to the base station on at least a subset of the indicated collection of UL resources. In example embodiments, the indicated collection of uplink resources comprises a plurality of selectable uplink resource sets. The control information is transmitted on one of the uplink resource sets which corresponds to an operational state of the communication network.

Abstract: A wireless device receives message(s) comprising configuration parameters of cells, a first IE for the primary PUCCH, a second IE indicating SR maximum number of transmissions, and an SR prohibit timer IE for an SR timer. The SR timer may be configured with an expiration duration value determined based on the SR prohibit timer IE regardless of which one of the primary PUCCH and a secondary PUCCH is employed for transmission of the SR.

Abstract: A terminal apparatus capable of efficiently performing the uplink and/or downlink communication is provided. The terminal apparatus receives higher layer signaling used for configuration of multiple scheduling request configurations, and transmits HARQ-ACK bits and scheduling request bits by using a HARQ-ACK PUCCH resource. Each of the multiple scheduling request configurations corresponds to one or more logical channels. Each of the multiple scheduling request configurations includes an SR PUCCH resource. The scheduling request bits are added to a sequence of the HARQ-ACK bits. In a case that the HARQ-ACK PUCCH resource and SR PUCCH resource overlap with each other in a time domain, a size of the scheduling request bits is given based on a number of scheduling request configurations with the overlapping SR PUCCH resource.

Abstract: There is provided provision of timing information of a first timing information source using timing information of a second timing information source to a wireless device. A network node determines that second timing information from the second timing information source is available and that timing information from the first timing information source is derivable from the second timing information. The network node instructs the wireless device to use the second timing information as a source for deriving first timing information of the first timing information source.

Abstract: Provided is a terminal apparatus capable of efficiently performing uplink and/or downlink communication. A coding unit (1071) configured to divide a transport block into multiple CBs and code each of the multiple CBs, a transmitter (107) configured to transmit the transport block by using a PUSCH, and a receiver (105) configured to receive a first HARQ-ACK are included, wherein each of the multiple CBs is included in any one of multiple CBGs, the first HARQ-ACK includes a second HARQ-ACK for each of the multiple CBGs or a third HARQ-ACK for the transport block, in a case that a signal waveform applied to the PUSCH is OFDM, whether the first HARQ-ACK includes the second HARQ-ACK or the third HARQ-ACK is given based on higher layer signaling, and in a case that a signal waveform applied to the PUSCH is DFT-s-OFDM, the first HARQ-ACK includes the third HARQ-ACK.

Abstract: This application provides a system message transmission method, an apparatus, and a system. A first communications device configures a MIB message, and the MIB message may carry various different information used to transmit a SIB1, for example, any one or more of scheduling information, first information, and an operation mode of a carrier, so that a second communications device receives the SIB1 based on the MIB message. The first communications device may flexibly configure information used to transmit the SIB1. In addition, when configuring the MIB message, the first communications device may consider ensuring, through configuration or implicit indication, that resource locations for transmitting SIB1s of different cells in one period are different. This type of interference isolation mechanism can avoid mutual interference between transmission of SIB1s of different cells, so that transmission reliability of the SIB1s can be improved.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine a component carrier configuration for a primary cell of the wireless communication device, wherein the wireless communication device is configured for dual connectivity with regard to a 4G/Long Term Evolution (LTE) network and a 5G/New Radio network; and apply a hybrid automatic repeat request (HARQ) timing configuration for a secondary cell of the wireless communication device based at least in part on the component carrier configuration. Numerous other aspects are provided.

Abstract: A system information transmission method, a terminal and a network device are provided. The method includes: sending request information to a network device in the case that target Other SI is to be requested; receiving a random access message two or a random access message four which is sent by the network device based on the request information and carries preset indication information; and determining whether to receive subsequent broadcast information based on the random access message two or the random access message four.

Abstract: A terminal is disclosed including a receiver that receives downlink control information that includes a resource assignment information of which a bit size is configured depending on a type of a signal, and a processor that determines a resource assignment based on the resource assignment information. In other aspects, a radio communication method is also disclosed.

Abstract: Embodiments of the disclosure provide a method and device for allocating resource in a wireless communication system. The method comprises: determining a set of user equipment (UEs) requesting for resource allocation based on resource available in the wireless communication system and a resource use requirement; allocating the resource to the set of UEs according to the resource use requirement; and sending information about the allocated resource to each UE in the set of UEs.

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may identify, for a carrier aggregation (CA) configuration including a primary cell and one or more secondary cells, a first frame structure configuration for the primary cell and a second frame structure configuration for a secondary cell of the one or more secondary cells. The UE may receive, from a base station, a downlink communication on the secondary cell. The UE may determine a feedback timing for the secondary cell based on the first frame structure configuration for the primary cell and the second frame structure configuration for the secondary cell. The UE may transmit, in response to the received downlink communication, feedback to the base station according to the feedback timing.

Abstract: A wireless navigation system with automatic guidance to the final destination/routes capable of operating in Internet-dead zones includes a system of servers containing data of final destinations/routes, Google and/or Apple Maps API, a voice synthesizer server, a GPS/AGPS system of satellites, servers and processing stations, a set of sensors, a microprocessor, a standard mobile operating system, a supra operating system controlling the above systems and a display and sound system for displaying the final output of the system.

Abstract: Provided in the embodiments are a method for signal transmission, a terminal device and a network device. The method comprises: determining, by a first device, a basic transmission interval and at least one basic numerology; and taking, by the first device, the basic transmission interval as a time domain unit and employing parameters in the at least one basic numerology to perform transmission of data and/or a pilot signal with a second device. According to the method, the terminal device and the network device provided by the embodiment, the flexibility of signal transmission can be improved.

Abstract: A wireless communication system includes: a transmitting apparatus to transmit using one or more of radio resources; and a receiving apparatus to store correspondence information indicating a correspondence between a resource amount and a data size, the transmitting apparatus transmits to the receiving apparatus, data mapped to the radio resources, where the transmitting apparatus transmits a single control signal associated with the data to be transmitted across a plurality of time resource, the transmitting apparatus transmits a single control signal associated with the data transmitted across a plurality of frequency resources, the single control signal includes information indicating a value based on a number of the plurality of time resources, a number of the plurality of frequency resources, or information indicating a first resource amount wherein the receiving apparatus acquires a first data size being dependent on the value, the first resource amount, and correspondence information, and decode the da

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use one or more antenna subarrays to perform a scheduling request (SR) operation with one or more corresponding transmission reception points (TRPs) while operating in a connected discontinuous reception mode. In some implementations, the UE may receive a configuration indicating a set of its antenna subarrays and a corresponding set of the TRPs with which to perform the SR operation. Based on this configuration, the UE may transmit an SR to the set of TRPs using the set of its antenna subarrays, receive an uplink grant from at least one TRP of the set of TRPs, and transmit uplink data to the at least one TRP. Additionally or alternatively, the UE may determine the sets of antenna elements and TRPs for the SR operation autonomously and transmit an indication of this determination when transmitting the SR.

Abstract: Embodiments of this application disclose a message transmission method and apparatus, a terminal, and a base station. In the method, a symbol or symbol group may be used as a granularity to select a plurality of symbols or symbol groups from one or more slots and then allocate the plurality of symbols or symbol groups to a same terminal for transmitting data. The plurality of symbols or symbol groups may be used for uplink data scheduling or may be used for downlink data scheduling. Therefore, a slot resource is allocated at a small granularity, so that a time domain resource is more flexibly allocated, and the slot resource is more fully utilized. This helps improve message transmission efficiency, thereby expanding a coverage area.

Abstract: The present application discloses a method for transmitting uplink control information, a user equipment, and a base station. The method includes: receiving a physical downlink control channel sent by a base station, where the physical downlink control channel includes indication information, where the indication information is used to indicate a physical uplink control channel resource used to transmit uplink control information; obtaining, according to the indication information and whether the uplink control information includes periodic channel state information, a physical uplink control channel resource used to transmit the uplink control information from a semi-statically configured first resource group and/or second resource group; and sending the uplink control information to the base station over a physical uplink control channel corresponding to the physical uplink control channel resource.

Abstract: The present disclosure provides an information transmission method, a user equipment and a network device. The information transmission method includes: when collision between scheduling request (SR) information to be transmitted by the UE and information on physical uplink control channel (PUCCH) occurs, transmitting the SR information and/or the information on the PUCCH.

Abstract: The present invention is designed to reduce the delay time to transmit delivery acknowledgment information as feedback in response to data channels. According to one aspect of the present invention, a receiving device has a receiving section that receives one or more code blocks mapped per given number of symbols, in a slot in which a data signal is scheduled, and a control section that controls the transmission of delivery acknowledgment information in response to the data signal in the slot, based on the decoding results of the code blocks mapped per given number of symbols.

Abstract: A method and system for measuring and controlling cross-link interference (CLI) between two devices in a wireless communication network is disclosed herein. In one embodiment, a method implemented on a first node for mitigating CLI between the first node and a second node is disclosed. The method comprises: receiving a wireless signal from the second node; measuring the wireless signal to determine a measurement value according to a predetermined metric for measuring CLI; determining an event based on the measurement value; and mitigating the CLI in accordance with a predetermined mitigation scheme associated with the event.

Abstract: The present invention provides a device-to-device (D2D) operation method performed by a terminal in a wireless communication system, the method comprising the steps of: receiving, from a network, a configuration indicating at least one or more resource pool; receiving at least one or more index on each of the at least one or more resource pool; selecting, on the basis of the at least one or more index, one resource among the at least one or more resource pool; and performing direct communication through the selected resource pool, wherein the index is information indicating the usage of the at least one or more resource pool.

Abstract: The present disclosure relates to a 5G or a pre-5G communication system for supporting a higher data rate since 4G communication systems such as LTE. According to an embodiment of the present disclosure, a method for determining transmission power of a terminal, including: receiving a terminal-specific transmission power parameter from a base station, determining transmission power of the terminal based on the terminal-specific transmission power parameter and a subcarrier spacing allocated to the terminal, and transmitting an uplink signal based on the determined transmission power, and an apparatus performing the same may be provided.

Abstract: A system and method are provided for improving radio system coverage and functionality by integrating and sharing the radio speaker microphone with a mobile device connected with a commercial carrier. The system and method allows: i) The radio system coverage to be seamlessly enhanced with the coverage area of the commercial internet and then to anywhere there is internet access. ii) Secondary audio paths provided over the same speaker microphone iii) Full duplex “hands free” communications provided for teams requiring the capability iv) Remote control of the user's communications device v) Remote programming of radios supporting a serial interface programming capability vi) Sensor alerts for individual users to be sent through communication channels to defined users.

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station used for wireless communication. The UE receives first information and second information, and receives a first radio signal in a first time interval. The first information and the second information are used for determining a first parameter and a second parameter respectively, the first parameter and the second parameter are used for multi-antenna related receptions respectively; the second parameter is used for a reception of a second radio signal; if a time-domain resource occupied by the second radio signal comprises the first time interval, the second parameter is used for a reception of the first radio signal, otherwise, the first parameter is used for a reception of the first radio signal. The disclosure can solve the conflict of beam scheduling and increase the flexibility of beam scheduling.

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method of transmitting and receiving a radio signal and an apparatus therefor. The method comprises the steps of receiving data in a time unit #n of a first frequency band and transmitting A/N in a time unit #m+k of a second frequency band in response to the data. In this case, the first frequency band and the second frequency band have different subcarrier spacing and a time unit #m of the second frequency band indicates the last time unit among a plurality of time units of the second frequency band corresponding to the time unit #n of the first frequency band.

Abstract: The disclosure discloses a method for predictive reception of physical layer downlink repetitions in NB-IoT UE. The object of the disclosure to find a method that prolongs the battery lifetime of IoT devices will be achieved by a method for predictive reception of physical layer downlink repetitions in NB-IoT devices, the method comprising the following steps: estimating an expected number of repeated sub-frames required for a successful reception of a current encoded and in sub-frames rate-matched downlink transmission from a base station to an IoT device by applying a redundancy estimation function, using the estimated expected number of repeated sub-frames as input of a repetition reception control function, where a feedback-loop between the redundancy estimation function and the repetition reception control function is used for refining and adapting the predictive reception of physical layer downlink repetitions in NB-IoT.

Abstract: A method for receiving system information, the method includes receiving, by a mobile terminal, a first block of second system information from a base station, wherein the first block of second system information includes scheduling information related to a plurality of second blocks of second system information; determining, by the mobile terminal, on which resource the plurality of second blocks of second system information is received using the scheduling information; and receiving, by the mobile terminal, the plurality of second blocks of second system information from the base station on the determined resource.

Abstract: Provided is a user terminal to be used in a future wireless communication system which bundles a plurality of slots (sub-frames) in a time direction. When applying bundling, a Front-loaded DMRS (Demodulation Reference Signal) is mapped to the rear of a control channel in a leading slot, and in second and subsequent slots, mapping is carried out on the basis of a rule to prevent conflict between the Front-loaded DMRS and the control channel. A control unit (203) of a user terminal (20) stipulates, in second and subsequent slots, the mapping configuration of the Front-loaded DMRS (the existence of mapping and/or the mapping position) on the basis of the aforementioned rules.

Abstract: A method for transmitting uplink control information includes: receiving, by a terminal device, scheduling information and trigger information from an access network device, where the scheduling information is used to instruct the terminal device to transmit, in M uplink subframes, uplink data scheduled by the scheduling information, M is a positive integer not less than 2, and the trigger information is used to instruct the terminal device to send uplink control information; determining, by the terminal device, in the M uplink subframes, an uplink subframe for carrying the uplink control information, where the determined uplink subframe is a subframe other than a first subframe in the M uplink subframes, and the first subframe is a first uplink subframe in the M uplink subframes; and sending, by the terminal device, the uplink control information in the determined uplink subframe.

Abstract: Provided is a method of transmitting a Physical Uplink Shared Channel (PUSCH) in a special subframe by a User Equipment (UE). The method includes receiving an Uplink (UL) grant from a base station, the UL grant being included in a downlink time period of Time Division Duplex (TDD) cell, wherein the TDD cell having TDD UL/DL configuration 1, 2 or 6; determining a resource in an Uplink Pilot Time Slot (UpPTS) of a special subframe of the TDD cell to transmit a PUSCH associated with the received UL grant, wherein the special subframe, having subframe number 1 or 6, consists of a Downlink Pilot Time Slot (DwPTS), a guard period (GP), and the UpPTS; transmitting, from the UE, the PUSCH mapped to the resource in the UpPTS; and receiving a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) responsive to the PUSCH.

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for managing a system information block (SIB) in a wireless communication network.

Abstract: A method for configuring a frame structure, a network side device and a terminal are provided. A relevant frame structure is modified so that uplink and downlink transmission resources are flexibly adjusted, so as to be adapted to requirements of uplink and downlink services and not be limited to a certain type or certain types of fixed uplink and downlink configurations and GP configurations. The method includes determining a first periodicity and first indication information, wherein the first periodicity is a frame periodicity configured for a carrier or a periodicity in which a uplink transmission appears; the first indication information is used to indicate whether a time-domain transmission resource available for the uplink transmission exists in the first periodicity or not; and, if the time-domain transmission resource exists, indicate a position of the time-domain transmission resource.

Abstract: An uplink transmitting method for a user equipment (UE) for supporting a short transmission time interval (TTI) in a wireless communication includes receiving downlink control information including uplink grant, and when a transmitting timing of an uplink signal corresponding to the uplink grant and a transmission timing of a semi-persistent (SPS) uplink signal overlap with each other, if a TTI length of a first channel in which the uplink signal corresponding to the uplink grant is to be transmitted is longer than a TTI length of a second channel in which the SPS uplink signal is to be transmitted, performing uplink signal transmission only on the second channel of the first channel and the second channel at the transmission timing.

Abstract: Methods and apparatuses for determining HARQ timing in a communication system supporting Carrier Aggregation (CA) are provided. A method for receiving, at a BS, a HARQ feedback from a UE in a communication system supporting CA of a Pcell and at least one Scell is provided. The Pcell and Scell support either FDD or TDD. The method comprises: transmitting a downlink physical channel through one of the Pcell and Scell; receiving the HARQ feedback corresponding to the downlink physical channel of the Pcell at a first timing predetermined for the Pcell; and receiving the HARQ feedback corresponding to the downlink physical channel of the Scell at a second timing. The second timing is determined according to one or more of duplex modes of the Pcell and the Scell, a scheduling mode of the Scell, and predefined rules.

Abstract: The disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). According to the disclosure, a method for operating a base station in a wireless communication system includes allocating a resource within a subframe, which is not consistent with a pre-determined time division duplex (TDD) configuration in the TDD configuration being used, based on an inter-cell interference, and performing communication with at least one terminal in the subframe. This study was carried out with the support of “Cross-Ministry Giga KOREA Project” of the Ministry of Science, ICT, and Future Planning.

Abstract: There is provided a method, in a wireless device, for communicating with a network node using autonomous Uplink (UL) access. The method comprises: after sending a data transmission to a network node, starting a retransmission window associated with a feedback process of the data transmission, the retransmission window including a first timer; and in response to detecting an absence of a feedback signal during a time period given by the first timer, retransmitting the data after expiry of the first timer.

Abstract: An uplink non-orthogonal multiple access for narrowband machine type communication used for the deployment of Internet of Things (IoT) interconnected devices where one or more user equipment are configured for uplink transmission with one or more uplink time-frequency regions for enhanced Machine Type Communication Non-Orthogonal Multiple Access. The configuring is based on defining and signaling one or more signal thresholds and one or more of a resource assignment, a starting subframe periodicity, a starting subframe offset, a time duration in each period, a demodulation reference signal cyclic shift assignment, orthogonal cover code assignment, and interleaver assignment.