Abstract: A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).

Abstract: A communication system is disclosed in which a user equipment (UE) receives data associated with an Ultra-Reliable and Low-Latency Communications (URLLC) service and data associated with an Enhanced Mobile Broadband (eMBB) service. The UE generates a first Hybrid Automatic Repeat Request (HARQ) codebook for URLLC service and a second HARQ codebook for the eMBB service, bundles the first HARQ codebook into a single bit, and appends it to the end of the second HARQ codebook to form a multiplexed HARQ codebook. The UE then transmits the multiplexed HARQ codebook to the access network node.

Abstract: A communication system is disclosed in which a user equipment (UE) communicates using a beam via a non-terrestrial network. The UE receives from a network node via the non-terrestrial network, information identifying a set of at least one candidate beam for beam switching, performs measurements of reference signals transmitted via the at least one candidate beam in the set; initiates the beam switching to a beam in the set based on a result of the measurements; and transmits, to the network node via the non-terrestrial network, an indication for indicating the beam switching.

Abstract: A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).

Abstract: A communication system comprising a non-terrestrial network part is disclosed in which a user equipment (UE) is served by one of the cells of the non-terrestrial network part. The UE determines whether to delay/suspend a small data transmission, based one or more associated parameters, so as to avoid a radio link failure or a handover. When the transmission is delayed/suspended, the UE initiates/resumes the data transmission in a new serving cell (e.g. after cell reselection or RRC establishment in the new cell), or via a relay (e.g. a device-to-device relay).

Abstract: A communication system is disclosed in which a base station performing listen-before-talk (LBT) and obtaining access during a shared channel occupancy time (COT) generates a transport block (TB) having a size corresponding to a full slot, and transmits the TB rate matched either to the symbols of a partial slot or to an aggregation of the symbols of a partial and a full slot.

Abstract: A communication system is disclosed in which a base station performing listen-before-talk (LBT) and obtaining access during a shared channel occupancy time (COT) generates a transport block (TB) having a size corresponding to a full slot, and transmits the TB rate matched either to the symbols of a partial slot or to an aggregation of the symbols of a partial and a full slot.

Abstract: A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).

Abstract: A communication system is disclosed in which a base station communicates with user equipment via an associated cell having a system bandwidth. The system bandwidth comprises a bandwidth part having a set of contiguous physical resource blocks. The base station initiates a random access procedure with the user equipment; provides first information identifying a set of frequency resources for an uplink channel; and provides second information identifying at least one specific frequency resource, within said set of frequency resources, for said uplink communication. The first information is provided prior to completion of the random access procedure.

Abstract: A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).

Abstract: A communication system is disclosed in which a user equipment (UE) communicates with a network node via a non-terrestrial network. The UE receives from the network node an indication that HARQ feedback is not required for a set of transmission occasions, and the UE omits HARQ feedback for that set of transmission occasions based on the information. The indication may be included in a DCI field or a MAC header.

Abstract: A communication system is disclosed in which a base station communicates with user equipment via an associated cell having a system bandwidth. The system bandwidth comprises a bandwidth part having a set of contiguous physical resource blocks. The base station initiates a random access procedure with the user equipment; provides first information identifying a set of frequency resources for an uplink channel; and provides second information identifying at least one specific frequency resource, within said set of frequency resources, for said uplink communication. The first information is provided prior to completion of the random access procedure.

Abstract: A communication system is disclosed in which an access network node determines a CSI feedback occasion in respect of a terminal device, determines if a PUSCH data transmission can be scheduled earlier than a PUCCH data transmission or if a PDSCH data transmission is to be scheduled; and if a PUSCH data transmission cannot be scheduled earlier than a PUCCH data transmission or a PDSCH data transmission is to be scheduled, transmits a downlink DCI of Downlink DCI format to the terminal device, the downlink DCI being configured to trigger generation by the terminal device of CSI reporting data; wherein the downlink DCI is further configured to schedule either a PUSCH or a PUCCH data transmission to support transmission of the CSI reporting data, depending on PUCCH availability when the CSI feedback occasion is determined.

Abstract: A communication system is disclosed in which a user equipment (UE) receives data associated with an Ultra-Reliable and Low-Latency Communications (URLLC) service and data associated with an Enhanced Mobile Broadband (eMBB) service. The UE generates a first Hybrid Automatic Repeat Request (HARQ) codebook for URLLC service and a second HARQ codebook for the eMBB service, bundles the first HARQ codebook into a single bit, and appends it to the end of the second HARQ codebook to form a multiplexed HARQ codebook. The UE then transmits the multiplexed HARQ codebook to the access network node.

Abstract: A communication system is disclosed in which a base station communicates with user equipment via an associated cell having a system bandwidth. The system bandwidth comprises a bandwidth part having a set of contiguous physical resource blocks. The base station initiates a random access procedure with the user equipment; provides first information identifying a set of frequency resources for an uplink channel; and provides second information identifying at least one specific frequency resource, within said set of frequency resources, for said uplink communication. The first information is provided prior to completion of the random access procedure.

Abstract: A communication system is disclosed in which a base station communicates with user equipment via an associated cell having a system bandwidth. The system bandwidth comprises a bandwidth part having a set of contiguous physical resource blocks. The base station initiates a random access procedure with the user equipment; provides first information identifying a set of frequency resources for an uplink channel; and provides second information identifying at least one specific frequency resource, within said set of frequency resources, for said uplink communication. The first information is provided prior to completion of the random access procedure.

Abstract: A communication system is disclosed in which a base station performing LBT and obtaining access during a shared COT generates a TB having a size corresponding to a full slot, and transmits the TB rate matched either to the symbols of a partial slot or to an aggregation of the symbols of a partial and a full slot.

Abstract: A communications device including a transmitter and a receiver configured to transmit and receive signals representing data to and from an infrastructure equipment of a mobile communications network via a first wireless access interface. The communications device transmits signals via a second wireless access interface to a communications apparatus operating as a relay node, and determines an additional delay caused by the transmission of the signals to the communications apparatus acting as the relay node via the second wireless access interface compared with a time taken which would have been taken to transmit the signals to the infrastructure equipment as if transmitted via the first wireless access interface, and transmits an indication from which the infrastructure equipment can derive the determined additional delay for adjusting the transmission or reception of the synchronized response.

Abstract: A communication system is disclosed in which a base station communicates with user equipment via an associated cell having a system bandwidth. The system bandwidth comprises a bandwidth part having a set of contiguous physical resource blocks. The base station initiates a random access procedure with the user equipment; provides first information identifying a set of frequency resources for an uplink channel; and provides second information identifying at least one specific frequency resource, within said set of frequency resources, for said uplink communication. The first information is provided prior to completion of the random access procedure.

Abstract: A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).