Abstract: The present disclosure relates to a first radio node (300) configured for orthogonal frequency division multiplexing (OFDM), comprising a receiver (310), a transmitter (320), a processor (330) and a memory (340) storing instructions executable by the processor (330) for causing the transmitter (320) in a first mode of operation with a first subcarrier spacing f1: to transmit a sequence of prefixed OFDM symbols, and in a second mode of operation with a second subcarrier spacing f2: to transmit a sequence of prefixed OFDM symbols, wherein the sequence of transmitted OFDM symbols is aligned with a predefined repeating radio frame, which is common to both the first and second modes of operation, or with an integer multiple of the predefined repeating radio frame; and the first and second subcarrier spacings are related by an integer factor, f1/f2=p or f1/f2=1/p, with p?1 integer.

Abstract: A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

Abstract: It is disclosed a wireless device (302, 90, 100), a radio network node (304, 70, 80) and methods therefore, for communicating in a network. The wireless device is configured to determine (52, 306) one or more possible first sequences of a discovery signal. The wireless device is configured to receive (54, 310) a second sequence of the discovery signal, and to determine (56, 312) if the one or more possible first sequences match the second sequence.

Abstract: Techniques are disclosed for allocating time-frequency resources in a system that uses multiple multicarrier modulation numerologies. According to one aspect, a method in a first wireless node comprises allocating (1310) time-frequency resources for use by a second wireless node, where said allocating comprises selecting, for use in multicarrier modulation in the allocated time-frequency resources, one of two or more subcarrier bandwidths that the second wireless node is adapted to use for modulating or de modulating of data. In some embodiments, the method further comprises sending (1320) resource allocation information to the second wireless node, the resource allocation information identifying the allocated time-frequency resources.

Abstract: The present invention relates to cellular radio communication and in particular to providing information on neighbour cells to enable terminals to perform neighbour cell measurements. In the prior art the terminal attempts to make neighbour cell measurements in a reference signal structure that is the same in the neighbour cell as in the cell the terminal camps in. The present invention is based on the insight that the reference signal structure may differ between neighbouring cell for example in the situation of an MBSFN area that is restricted to a region of all cells of a radio network, or in the situation of TDD mode being applied there may be different regions with different allocation of sub-frames for transmission in the uplink and downlink directions. The present invention solves the problem by broadcast information in a cell indicative of the reference signal structure in neighbour cells.

Abstract: A UE and a method performed by the UE for power control of uplink transmissions, when the UE is connected in dual connectivity mode to at least a first network node and a second network node are provided. The method comprises determining (210) to perform a first uplink transmission to the first network node and a second uplink transmission to the second network node, the uplink transmissions to be performed simultaneously. The method also comprises determining (220) a respective first and second uplink transmission power for the first and second uplink transmission; and transmitting (240) the first and the second uplink transmissions at the first and the second uplink transmission power respectively when the sum of the first and second uplink transmission power is below a maximum transmission power.

Abstract: A first communication node (110) receives a stream of code blocks from a second communication node (120) over an acknowledged connection (131.). The first communication node processes the received code blocks in accordance with at least one transport format parameter, TFP, detects errors in received code blocks, and transmits an acknowledgment in respect of groups of code blocks indicating whether at least one error was detected in the group. A first subset of the code blocks of a group are transmitted (e.g., modulated and demodulated) in accordance with a first TFP value, and a remainder of the code blocks are transmitted in accordance with a second TFP value. Because the first and second TFP values are independent, it is possible either to shorten the necessary processing time in the first communication node or, in connection with a predictive acknowledgment mechanism, to make the receiving-side processing of code blocks that do not contribute to the value of the transmitted acknowledgment more robust.

Abstract: It is presented a method performed in a first network node. The method comprises the steps of: receiving an uplink transmission from a mobile communication terminal; determining, based on content of the uplink transmission, information to be transmitted over a first communication channel when the content comprises control data intended for a second network node; transmitting the information over the first communication channel to the second network node when the information is to be transmitted over the first communication channel; and transmitting the information via a second communication channel, the second communication channel being physically separate from the first communication channel, when the information is not to be transmitted over the first communication channel. A corresponding network node is also presented.

Abstract: The technology described in this case facilitates random access by a user terminal with a radio base station. A user terminal determines one of a first type of uplink scrambling sequences and generates a random access message using the determined one of the first type of uplink scrambling sequences. The random access message is transmitted to the base station. The user terminal receives from the base station a second, different type of uplink scrambling sequence and uses it for subsequent communication with the radio base station. For example, the first uplink scrambling sequences may be specifically associated with the radio base station's cell area or a random access radio channel associated with the radio base station, but they are not specifically assigned to any user terminal, and the second uplink scrambling sequence may be selected from a second set of uplink scrambling sequences specifically assignable to individual user terminals.

Abstract: A set of different pilot structures are designed for use in different environments and/or different user behaviors that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area (108A-E) in resource space for its communication, which has a suitable pilot configuration. In one embodiment, the entire resource space is provided with different pilot structures in different parts (110A-D) In advance and allocation of resources to the users are then performed in order to match estimated radio conditions to the provided pilot structure. In another embodiment, allocation is performed first, and then the actual pilot structure is adapted within the allocated resource space area to suit the environmental conditions.

Abstract: Variable bandwidth assignment and frequency hopping are employed to make efficient use of radio resources. Variable bandwidth assignment is achieved by dynamically allocating different numbers of subcarriers to different wireless communication devices depending on their instantaneous channel conditions. The frequency hopping patterns are determined “on-the-fly” based on the current bandwidth assignments. The bandwidth assignments and frequency hopping patterns are signaled to the wireless communication devices in a scheduling grant.

Abstract: A first User Equipment (UE), a second UE, a first Radio Network Node (RNN), and methods therein for controlling interference between transmissions in a first system and transmissions in a second system. The first system comprises the first UE and the first RNN serving the first UE. The second system comprises the second UE and a second RNN serving the second UE. The first system has a first priority in a first part of a shared spectrum and the second system has a second priority in the first part of the shared spectrum, wherein the first priority is higher than the second priority. The method in the first UE comprises transmitting a signal to a second RNN that is to perform a downlink transmission to the second UE, which signal is configured to control the transmission of the second RNN.

Abstract: The present invention relates to cellular radio communication and in particular to providing information on neighbor cells to enable terminals to perform neighbor cell measurements. In the prior art the terminal attempts to make neighbor cell measurements in a reference signal structure that is the same in the neighbor cell as in the cell the terminal camps in. The present invention is based on the insight that the reference signal structure may differ between neighboring cell for example in the situation of an MBSFN area that is restricted to a region of all cells of a radio network, or in the situation of TDD mode being applied there may be different regions with different allocation of sub-frames for transmission in the uplink and downlink directions. The present invention solves the problem by broadcast information in a cell indicative of the reference signal structure in neighbor cells.

Abstract: A method implemented in a first communication node (110) for communicating with a second communication node (120) over an acknowledged connection (131), comprising: receiving a stream of code blocks from the second communication node, wherein each code block is associated with a check value enabling error detection and belongs to a predefined group of code blocks; detecting errors in received code blocks using respective associated check values; and transmitting to the second communication node an acknowledgement in respect of each of said predefined groups of code blocks, wherein a negative value of the acknowledgment signifies that an error was detected for at least one of the code blocks in the predefined group, wherein the acknowledgement for a predefined group of two or more code blocks is based on a combination of error detection results for a subset of the code blocks in the predefined group.

Abstract: A first user equipment transmits a beacon signal to be detected by at least one second user equipment for Device-to-Device, D2D, communication in a wireless telecommunications network. The first user equipment transmits the beacon signal in transmission bursts with a first energy level, where the transmission bursts are transmitted continually over time in order to enable detection of the beacon signal by the at least one second user equipment. The first user equipment then increases the energy of the transmission bursts at one or more intervals to a second energy level such that transmission bursts with the first energy level is alternated with transmission bursts with the second energy level, and such that transmission bursts with the first energy level recur more frequently over time than transmission bursts with a second energy level. A user equipment, a network node and a method in the network node are also provided.

Abstract: The embodiments herein relate to a method in a first device (101) for informing a second device (105) that an identity associated with the first device (101) is at a certain location. The first device (101) obtains information about the location of the first device (101). The first device (101) broadcasts, by means of device to device, D2D, communication, a message to be received by the second device (105). The message comprises the location information and an identity information associated with a user of the first device (101). The location information is transmitted on a first communications resource and the identity information is transmitted on a second communications resource.

Abstract: A User Equipment (UE) and a method performed by the UE for power control of uplink transmissions, when the UE is connected in dual connectivity mode to at least a first network node and a second network node are provided. The method comprises determining to perform a first uplink transmission to the first network node and a second uplink transmission to the second network node, the uplink transmissions to be performed simultaneously. The method also comprises determining a respective first and second uplink transmission power for the first and the second uplink transmission; and transmitting the first and the second uplink transmissions at the first and the second uplink transmission power respectively when the sum of the first and second uplink transmission power is below a maximum transmission power.

Abstract: A method in a first user equipment for adjusting a beacon signal to be detected by at least one second user equipment in a wireless telecommunications network is provided. The beacon signal is transmitted in order to enable an establishment of Device-to-Device, D2D, communication between the first user equipment and the at least one second user equipment. The method is characterized in that the method comprises adjusting, prior to transmitting the beacon signal, the transmit power of the beacon signal based on a requirement of an application in the first user equipment for which the D2D communication is to be established. A user equipment, a network node, and a method in a network node for enabling a D2D communication between a first user equipment and at least one second user equipment are also provided.

Abstract: In an aspect, a transmitting node schedules a downlink transmission to a first UE over a first transmission interval having a predetermined length and starts the downlink transmission to the first UE in the first transmission interval. The transmitting node stops the downlink transmission to the first UE prior to an end of the first transmission interval to create a first end of a transmission hole in the downlink transmission to the first UE and resumes the downlink transmission to the first UE at a second end of the transmission hole. The transmitting node may receive an uplink transmission from a second UE or transmit a higher priority transmission, within the transmission hole.

Abstract: It is presented a method for assisting downlink interference estimation in a cellular network. The method is performed in a network node of the cellular network and comprises the steps of: estimating an average transmit power of the network node in a future time period; transmitting a power parameter based on the estimated average transmit power to at least one wireless device being served by the network node; and transmitting a reference signal for downlink interference estimation. A corresponding network node, wireless device, computer programs and computer program products are also presented.