Abstract: A method in wireless device (110) is disclosed. The method comprises determining (404) a synchronization source for the wireless device, and determining (408) a synchronization priority of the synchronization source. The method comprises determining (412) one or more rules for dropping transmissions of sidelink synchronization signals, the one or more rules corresponding to the synchronization priority of the synchronization source. The method comprises dropping (416) transmissions of sidelink synchronization signals according to the determined one or more rules for dropping transmissions of sidelink synchronization signals.

Abstract: A method of indicating resources in periodically occurring resource pools according to some embodiments includes, in a radio communication device, transmitting a scheduling assignment message on a shared medium during a predefined period that is defined for the transmission of scheduling assignment messages, wherein the scheduling assignment message indicates resources in a plurality of the periodically occurring resource pools for transmission of a data message; and transmitting the data message in the identified resources in the plurality of the periodically occurring resource pools. Related radio communication devices are also disclosed.

Abstract: There is provided a method in a wireless device for transmitting data on sidelink carriers. The method comprises: obtaining a threshold related to a data rate; determining one or more sidelink carriers based on the threshold; selecting one or more sidelink carriers from the determined one or more sidelinks carriers for data transmission; transmitting data using the one or more obtaining a threshold related to a data rate selected sidelink carriers. The data rate may correspond to a buffer status of the wireless device, a bit rate or a congestion measurement of the sidelink carriers. A wireless device for performing this method is also provided.

Abstract: A method by a user equipment, UE, that includes acquiring information about an allowed time interval at which resources in a pool of resources can be reserved for future transmission by the UE, and sensing using the resources in the pool and at a first time interval determined based on the allowed time interval for the pool. UEs that perform operations corresponding to the method are disclosed.

Abstract: The disclosure relates to methods of operating a first wireless terminal providing network communication with a radio access network using a network carrier and providing sidelink communications using a sidelink carrier. A scheduling grant may be received from the radio access network using a network subframe of the network carrier. First and second time measurements relating to the sidelink carrier and the network carrier respectively may be obtained. Responsive to the scheduling grant, the first time measurement, and the second time measurement, a communication sidelink subframe of the sidelink carrier may be selected to be used for a sidelink communication.

Abstract: Methods and apparatus for resource allocation in a D2D network (100) are disclosed for reducing resource collisions among wireless devices (200) engaged in device-to-device (D2D) communications. In D2D communications, each wireless device (200) selects a radio resource for signal transmissions and retains the selected resource until a reselection becomes necessary. During the transmission, the wireless device (200) detects a triggering condition for resource reselection. Responsive to the triggering condition, the wireless device (200) performs resource reselection according to a reselection rule that is designed to reduce resource collisions among wireless devices (200).

Abstract: A method includes receiving a first transmission; assessing a channel property of the first transmission; receiving a second transmission; determining if a corresponding channel property of the second transmission can be estimated based on the channel property of the first transmission; in response to determining that the corresponding channel property of the second transmission can be estimated based on the channel property of the first transmission by determining that transmission resources used for the first and second transmissions are sufficiently close in time and/or frequency domains that a channel property is common to both transmissions, estimating the corresponding channel property of the second transmission based on the channel property of the first transmission; and detecting the second transmission using the estimated corresponding channel property of the second transmission.

Abstract: A method in a first terminal device for facilitating direct communication with a second terminal device. The method comprises transmitting to the second terminal device a Modulation and Coding Scheme (MCS) index, based on which the second terminal device can obtain a modulation order and a Transport Block Size (TBS) in accordance with a first mapping or a second mapping between MCS indices on one hand and modulation orders and TBSs on the other. The MCS index is determined by the first terminal device by selectively applying the first or second mapping.

Abstract: A device operates in a communications network by obtaining an adjustment term based on communications from the communications network and setting a time reference for the device based on the obtained adjustment term. The adjustment term is such that the set time reference for the device is common to at least one other device in communication with the device. The device further operates by communicating with the at least one other device in device-to-device communication, based on the common set time reference.

Abstract: A method by a user equipment, UE, that includes acquiring information about an allowed time interval at which resources in a pool of resources can be reserved for future transmission by the UE, and sensing using the resources in the pool and at a first time interval determined based on the allowed time interval for the pool. UEs that perform operations corresponding to the method are disclosed.

Abstract: Embodiments herein relate e.g. to a method performed by a wireless device (10) for handling communication in a wireless communication network. The wireless device (10) determines sets of values of transmission parameters based on two or more conditions, wherein the transmission parameters are related to wireless devices. The wireless device (10) determines whether there is one or more overlapping values of the sets of values. When determined that there is one or more overlapping values, the wireless device (10) selects a value of the one or more overlapping values; and when determined that there is no overlapping values, the wireless device (10) selects a value from the sets of values of transmission parameters based on a criteria.

Abstract: A method in a wireless device is disclosed. The method comprises determining one or more time resources in a particular carrier from one or more pools of time resources for a sidelink operation by the wireless device. The method comprises sending a gap request message to a network node, the gap request message indicating one or more gaps requested by the wireless device, the one or more gaps comprising the determined one or more time resources for the sidelink operation.

Abstract: A method and wireless device for determining a time interval, T2, for selecting a time-frequency resource are disclosed. According to one aspect, a method includes determining the time interval based on at least one parameter serving as a proxy indicative of a likelihood of collision. In some embodiments, at least one of the at least one parameter is a priority level indication, such that a higher priority transmission results in a lower value of T2.

Abstract: The present disclosure pertains to a transmitter terminal (10), the transmitter terminal (10) being adapted for D2D communication and/or transmission. The transmitter terminal (10) is further being adapted for transmitting multiplexed control information and data, wherein the control information and data are multiplexed based on a mapping. The present disclosure also pertains to related devices and methods.

Abstract: A method and a device configured for selecting a transmission parameter in a wireless communication network are disclosed.

Abstract: A wireless device (18) is configured for selecting a synchronization signal to use as a reference for device-to-device, D2D, communication. The wireless device (18) is configured to receive a multi-level synchronization signal (28) for which prioritization rules at the wireless device (18) define multiple priority levels. The wireless device (18) is also configured to select, from among multiple received synchronization signals including the multi-level synchronization signal (28), a synchronization signal to use as a reference for D2D communication, based on priority levels defined for the received synchronization signals and based on a radio resource (32) on which the wireless device (18) received the multi-level synchronization signal (28).

Abstract: Methods of operating a wireless communication device providing sidelink communications are discussed. Decoded scheduling assignments may be provided for a plurality of sidelink data transmissions of a transmission time interval. Each of the decoded scheduling assignments may correspond to a respective one of the plurality of sidelink data transmissions of the TTI, and the decoded scheduling assignments may be based on scheduling assignments that are received with the plurality of sidelink data transmissions during the TTI. A subset of the plurality of sidelink data transmissions to be decoded may be identified, and each of the sidelink data transmissions of the subset may be selectively decoded.

Abstract: Embodiments of the present disclosure provide a method, apparatus and computer program product for sidelink transmission control. The method implemented at a first user equipment which supports a first radio access technology comprises: determining a sidelink transmission mode for transmitting, wherein the sidelink transmission mode is one of a first mode corresponding to the first radio access technology and a second mode corresponding to a second radio access technology; and transmitting a sidelink signal according to the sidelink transmission mode using a sidelink resource configured by a network node which serves the first user equipment.

Abstract: UE (12) for transmission of a demodulation reference signal, DMRS, for sidelink communications is provided. UE (12) includes processing circuit (26) configured to: determine at least one transmission parameter associated with at least one of data transmission and control information transmission, and generate a DMRS using the determined at least one transmission parameter. UE (12) includes transmitter circuit (22) configured to transmit the DMRS.

Abstract: A method performed by a first wireless device (120) for transmitting a synchronization signal to a second wireless device (122). The first and second wireless devices (120,122) operate in a wireless communications network (100). The first wireless device (120) receives, from a network node (110) operating in the wireless communications network (100), a message indicating whether or not a carrier is to be used for transmitting a synchronization signal to the second wireless device (122). Further, the first wireless device (120) transmits, to the second wireless device (122), a synchronization signal on a carrier indicated by the received message.