Abstract: A transceiver configured for communicating in a wireless communication network being operated so as to schedule communication in a communication channel being organized in a plurality of resources; is configured for performing long-term sensing an utilization of the channel by decoding a data traffic; for estimating a usability of resources of the channel for an own transmission based on the decoding; and for scheduling the own transmission based on the usability of the resources.

Abstract: A transceiver is configured for communicating in a wireless communication network being operated so as to schedule communication in a plurality of transmission time intervals, each transmission time interval including a plurality of resource elements arranged in a time-frequency grid. Each transmission time interval includes a control section and a data section. The transceiver is configured for transmitting, using a resource in the control section, the resource in the control section containing a reservation information indicating that the transceiver reserves a specific resource in a future transmission time interval.

Abstract: A user device, UE, for a wireless communication system is described. The wireless communication system includes a plurality of user devices, UEs. The UE communicates with one or more transmitting UEs using a sidelink, supports a certain number of HARQ processes, and buffers one or more transmissions for each HARQ process. During a unicast communication with a transmitting UE using the sidelink, the UE receives from the transmitting UE a transmission during a transmission time interval, the transmission associated to control data, e.g. SCI, including a HARQ process ID, buffers the received transmission for the HARQ process, and combines the buffered transmissions prior to decoding. In case a successfully identified transmission is not buffered, the UE indicates to the transmitting UE that the transmission is not buffered at the UE.

Abstract: A transceiver for a wireless communication system is described. The wireless communication system provides resources to be allocated for respective transmissions in the wireless communication system. The resources include one or more bandwidth parts, BWPs, a BWP having a certain numerology and including a plurality of subcarriers in the frequency domain. At least one of the BWPs includes a plurality of resource sets for a sidelink communication, the plurality of resource sets including at least a first resource set and a second resource set, the first resource set being associated with a first criterium, the second resource set being associated with a second criterium, and the first criterium and the second criterium being different. The transceiver is configured to use resources from one or more of the plurality of resource sets within the one BWP for a communication.

Abstract: A wireless communication system includes a plurality of user devices, UEs, and at least one logical group defined in accordance with one or more logical group criteria. The logical group includes a plurality of member UEs to be connected via sidelink for sidelink communication with each other, and all member UEs of the logical group have assigned the same destination identification, ID, the destination ID being unique for the logical group.

Abstract: A wireless communication system includes one or more base stations, and a plurality of UEs for a sidelink communication using sidelink resources. The UEs includes a transmitting UE and a receiving UE using a subset of the sidelink resources of the wireless communication system. The receiving UE sends over the sidelink a sidelink feedback to the transmitting UE. The sidelink feedback indicates for a data transmission a successful or non-successful reception at the receiving UE. The transmitting UE reports the sidelink feedback to a base station. The base station provides to the transmitting UE, responsive to the sidelink feedback, sidelink resources for a possible retransmission of a data packet over the sidelink to the receiving UE. The reporting of the sidelink feedback to the base station by the transmitting UE is activated or deactivated responsive to one or more conditions.

Abstract: A wireless communication system includes a plurality of user devices, UEs, configured for a sidelink communication using resources from a set of sidelink resources of the wireless communication system. The plurality of UEs includes at least one transmitting UE and at least one receiving UE, the transmitting UE and the receiving UE configured to use at least a subset of the sidelink resources of the wireless communication system for the sidelink communication. The wireless communication system is configured to allow a data duplication on the sidelink, wherein the data duplication on the sidelink is activated or triggered dependent on one or more of a sidelink quality of the sidelink between the transmitting UE and the receiving UE, and/or an occupancy of the sidelink resources, and/or data received by a network element/network function, and/or the application service running on one of the UEs.

Abstract: An apparatus for a wireless communication system is configured to be connected to at least one user device, UE, of the wireless communication system via a sidelink for a sidelink communication with the at least one UE. For a unicast transmission to the UE, the apparatus is configured to transmit a sidelink frame having a certain frame duration, a first part of the sidelink frame including a control signaling, the control signaling indicating to the UE whether a feedback is to be returned to the apparatus, the feedback indicating a successful reception of data at the UE and/or a sidelink channel condition. In case the feedback from the UE is desired, the apparatus is configured to transmit in the first part of the frame, using the control signaling, the indication that the feedback is to be provided by the UE such that a duration of the control signaling is shorter, by a remaining duration, than the frame duration, and receive from the UE, during the remaining duration, the feedback.

Abstract: An apparatus for a wireless communication system includes a plurality of base stations and a plurality of UEs. The apparatus is to be connected to a base station for a communication with the base station, and one or more UEs via a sidelink for a sidelink communication. The apparatus and the one or more UEs form a group of user devices. The apparatus is to request from a base station, directly or indirectly, resources for a sidelink communication with the one or more UEs of the group, and is to obtain from the base station, directly or indirectly, information about at least one set of resources to be used for the sidelink communication within the group. Each of the sets of resources is only or exclusively used within the group, and the group members include the apparatus and the one or more UEs of the group.

Abstract: A wireless communication system includes one or more base stations, and a plurality of user devices, UEs. The plurality of UEs includes a plurality of first UEs operating in a first mode and a plurality of second UEs operating in a second mode. The first UEs and the second UEs are configured for a sidelink communication. A sidelink transmission includes a sidelink frame having a control region and a data region. The control region includes a first control region and a second control region, the first control region for transmitting control data of a first UE, the second control region for transmitting control data of a second UE, and the first and second control regions including a plurality of a common resources.

Abstract: An apparatus for a wireless communication system includes one or more base stations and a plurality of user devices, UEs. The apparatus is configured to be connected to one or more UEs via a sidelink for a sidelink communication with the one or more UEs, the apparatus and the one or more UEs forming a group of UEs and using a set of group resources to be used for the sidelink communication within the group of UEs. In case a base station does not provide resource allocation configuration or assistance, the apparatus is configured to select resources from a set of resources provided by the wireless communication system so as to alter or completely change the set of group resources to be used for the sidelink communication within the group of UEs.

Abstract: Data to be transmitted over a channel from a transmitter to a receiver is encoded to obtain a codeword. The codeword is defined by a plurality of variable nodes associated with a plurality of the check nodes of a bipartite graph representing the code. The codeword is transmitted over the channel such that certain variable nodes are transmitted prior to other variable nodes. The certain variable nodes are associated with a subset of the check nodes of the bipartite graph and define a subcodeword known at the receiver. At the receiver, a decodability of the transmitted codeword is estimated using the subcodeword prior to receiving all variable nodes of the codeword.

Abstract: A wireless communication system includes one or more base stations, and one or more user devices, UEs. The base station is configured to transmit data to a UE being served by the base station, the data including control data and user data, the user data including at least first user data and second user data, the first user data associated with a first service and second data associated with second service, the first and second services having one or more different transmission requirements. Responsive to receiving in the control data a grant for a feedback transmission, the UE is configured to send a feedback to the base station, the feedback indicating for one or more data blocks of the data a successful or non-successful reception at the UE. The control data includes a first downlink assignment index, DAI, associated with the first data, and a second DAI associated with the second data.

Abstract: In the field of wireless communication networks or systems in which a user equipment is configured with semi-persistent scheduling, a first aspect of the invention provides for continuous or non-interrupted SPS of the user equipment after a handover, and a second aspect of the invention provides an enhanced control signaling for a user equipment configured with SPS to reduce the signaling overhead.

Abstract: In the field of mobile communication systems, techniques relating to checking or verifying if information sent by a transmitter has been correctly received at a receiver so as to initiate a retransmission in case of a non-successful transmission of the information are described. Embodiments relate to simultaneous synchronous and asynchronous HARQ, hybrid automatic repeat request, operations in a network entity of the wireless communication system, like a base station or a user equipment, UE. In particular, an approach for reliably handling retransmissions in a wireless communication system for data or information associated with different services types is described.

Abstract: A wireless communication system includes a plurality of transceivers. The plurality of transceivers include at least a first transceiver and a second transceiver. The first transceiver and the second transceiver are configured for a sidelink communication with each other. The wireless communication system supports a retransmission protocol for the sidelink. The retransmission protocol enables the first transceiver to perform a retransmission for a data packet, responsive to an explicit or an implicit feedback from the second transceiver, which receives one or more data packets from the first transceiver, in case of a non-successful transmission of the data packet over the sidelink.

Abstract: A user equipment, UE, for a wireless communication network including one or more base stations, performs a transmission to a base station using a grant-free, GF, transmission scheme. The transmission being performed in accordance with a GF transmission configuration. The UE receives from the base station a certain signaling. The certain signaling indicates that the base station failed to identify the UE from the transmission. Responsive to the certain signaling from the base station, the UE retransmits the transmission in accordance with a GF retransmission configuration. The GF retransmission configuration is different from the GF transmission configuration.

Abstract: The transmission of data signals transmitted by a plurality of transmitters may be rendered more efficient by combining multi-user superposition coding with appropriate phase shift estimation at the receiver so that phase shift compensation at the transmitter's side may lead to a superposition of the data signals which may be demapped correctly so as to obtain information data per data signal. Owing to the combination, the concept is applicable to typical uplink situations or downlink situations of separate contributing BSs: contrary to the simple downlink situation where the data signals stem from one BS and are superimposed in one domain, namely the base station's domain, the data signals to be superimposed stem from separate transmitters, such as user entities or mobile terminals in the typical uplink situation, or different base stations in the downlink situation.

Abstract: Data to be transmitted over a channel from a transmitter to a receiver is encoded to obtain a codeword. The codeword is defined by a plurality of variable nodes associated with a plurality of the check nodes of a bipartite graph representing the code. The codeword is transmitted over the channel such that certain variable nodes are transmitted prior to other variable nodes. The certain variable nodes are associated with a subset of the check nodes of the bipartite graph and define a subcodeword known at the receiver. At the receiver, a decodability of the transmitted codeword is estimated using the subcodeword prior to receiving all variable nodes of the codeword.

Abstract: In the field of wireless communication networks or systems in which a user equipment is configured with semi-persistent scheduling, a first aspect of the invention provides for continuous or non-interrupted SPS of the user equipment after a handover, and a second aspect of the invention provides an enhanced control signaling for a user equipment configured with SPS to reduce the signaling overhead.