Abstract: Systems, methods, apparatuses, and computer program products for user equipment behavior with respect to hybrid automatic repeat request retransmission in new radio sidelink co-existence scenarios with another technology are provided. For example, a method can include enabling, for a receiving user equipment, hybrid automatic repeat request negative acknowledgement only feedback. The method can also include first determining whether to condition negative feedback on at least one first condition, or second determining whether negative feedback is conditioned on at least one second condition. The method can further include third determining whether to retransmit a message according to hybrid automatic repeat request according to results of the first determining or the second determining. The method can additionally include communicating with the receiving user equipment based on a result of the third determining.

Abstract: The disclosure relates to an apparatus comprising: means for sending (500) a duplicate sidelink transmission to a user equipment on each carrier of a group of carriers; means for receiving (502) feedback from the user equipment for each carrier; and means for determining (504) a sidelink carrier aggregation capability of the user equipment on the group of carriers based on the feedback.

Abstract: Systems, methods, apparatuses, and computer program products for handling NR slot aggregation in radio SL co-channel coexistence. A method may include determining that one or more slots of a first radio access technology overlaps a subframe of a second radio access technology. The method may also include detecting whether the second radio access technology is using the subframe of the second radio access technology. The method may further include determining by an outcome of at least one evaluated condition whether to transmit in the one or more overlapping slots or refrain to transmit in the one or more overlapping slots. The method may further include performing transmission with a same transmit power in all the slots that overlap the subframe of the second radio access technology.

Abstract: According to an example aspect of the present invention, there is provided an apparatus caused at least to determine a common automatic gain control symbol to be transmitted during a first symbol of a slot, wherein the first symbol of the slot is for a transmission of a first automatic gain control symbol by a transmitting sidelink user equipment and for a transmission of a second automatic gain control symbol by a receiving sidelink user equipment and the apparatus is the transmitting sidelink user equipment, wherein the common automatic gain control symbol comprises the first automatic gain control symbol and the second automatic gain control symbol and transmit the first automatic gain control symbol during the first symbol of the slot.

Abstract: A method is disclosed comprising including: performing a sensing on at least one of a first pool on a first carrier and a second pool on a second carrier for sidelink, SL, communication using a sensing-based UE—selected resource allocation mode on at least one of the first pool and the second pool, wherein the first pool and the second pool have at least a 1-to-1 relationship of SL resources; selecting one or more resources from at least one of the first pool and the second pool for a SL transmission based on at least one outcome of the sensing on at least one of the first pool and the second pool; and transmitting data over SL using the selected one or more resources. It is further disclosed an according An apparatus, computer program, and system are further disclosed.

Abstract: An SL UE that detects a resource conflict associated with a transmitting UE may be able to indicate this resource conflict by transmitting inter-UE coordination information over a PSFCH resource determined based on a group member ID of the transmitting UE. This may be different from transmitting HARQ feedback via a PSFCH resource determined based on a group member ID of the detecting UE.

Abstract: There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Abstract: There is provided a method, comprising: receiving a first SCI from a first device indicating a first reserved radio resource for transmission by the first device; receiving a second SCI from a second device indicating a second reserved radio resource for transmission by the second device, the first and second reserved radio resource overlapping at least partially; determining a first and second received signal strength associated with the received first and second SCI respectively; determining at least one of a first MCS applied by the first device or a second MCS applied by the second device; determining, based on the first MCS and/or the second MCS, at least one threshold; and determining, based on the at least one threshold and the first and second received signal strengths, whether or not to transmit a resource conflict indication to at least one of the first device or the second device.

Abstract: There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Abstract: A user equipment includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the user equipment to: select radio resources for a first sidelink transmission to a first user equipment based on sidelink control information from a second user equipment, the sidelink control information including at least beam information for a second sidelink transmission by the second user equipment; and perform the first sidelink transmission to the first user equipment on the selected radio resources.

Abstract: An SL UE that detects a resource conflict associated with a transmitting UE may be able to indicate this resource conflict by transmitting inter-UE coordination information over a PSFCH resource determined based on a group member ID of the transmitting UE. This may be different from transmitting HARQ feedback via a PSFCH resource determined based on a group member ID of the detecting UE.

Abstract: A physical sidelink feedback channel custom indication may be defined to indicate a half-duplex collision between one or more sidelink UE to a transmitting UE involved in the collision. In response to the indication, the transmitting UE may not retransmit the packet involved in the collision, and may stay awake for an extended period of time. A receiving UE that identified the collision and transmitted the indication may retransmit the packets involved in the collision to the transmitting UEs that have not yet received the respective packets.

Abstract: A user device may receive from a base station, information indicating that support for a receive limited user device is enabled based on a presence of a threshold number of receive limited user devices within a range of a cell of the base station. A receive limited user device is a user device that is unable to receive a transmission that was transmitted based on one or more communication capabilities of a full set of communication capabilities. The user device may select, in response to receiving the information, one or more communication capabilities to support a receive limited user device. The user device may transmit information using the selected one or more communication capabilities.

Abstract: There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Abstract: Embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage medium of groupcast for sidelink communication. In example embodiments, at a leader device in a group of devices, an orthogonal sequence and cover code is selected from a first set of orthogonal sequences and a first set of orthogonal cover codes. The first set of orthogonal sequences and the first set of orthogonal cover codes are used for acknowledgement feedback in the group. An indication of the selected orthogonal sequence and cover code is sent to a first member device of a plurality of member devices in the group.

Abstract: Embodiments of the present disclosure provide a communication method and apparatus. For example, at a first device, a resource for data transmission is randomly selected, and the resource is used to transmit data. In addition, the first device sends, to a second device, an indication that the first device will continue to use the resource for transmitting further data. A corresponding apparatus is further disclosed in the present disclosure.

Abstract: Embodiments of the present disclosure provide a communication method and apparatus. For example, at a first device, a resource for data transmission is randomly selected, and the resource is used to transmit data. In addition, the first device sends, to a second device, an indication that the first device will continue to use the resource for transmitting further data. A corresponding apparatus is further disclosed in the present disclosure.

Abstract: The method includes determining a time interval during which at least one other user equipment is to transmit a data transmission; generating a scheduling signal indicative of the data transmission; and transmitting the scheduling signal during the determined time interval.

Abstract: There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Abstract: A technique includes receiving, by a user device from a base station, information indicating that support for a receive limited user device is enabled based on a presence of a threshold number of receive limited user devices within a range of a cell of the base station, wherein a receive limited user device is unable to receive a transmission that was transmitted based on one or more communication capabilities of a full set of communication capabilities, selecting, by the user device in response to the receiving, one or more communication capabilities to support a receive limited user device, and transmitting, by the user device, information using the selected one or more communication capabilities.