Telefonaktiebolaget Lm Ericsson (publ)

Ricardo Blasco Serrano

Stefano Sorrentino

Min Wang

Hieu Do

Marco Belleschi

Shehzad Ali Ashraf

Gabor Fodor

Wanlu Sun

Zhang Zhang

Jingya Li

Shaohua Li

Liang Hu

Congchi Zhang

Yunxi Li

Mikael Fallgren

Mårten Sundberg

Chunhui Zhang

Ning He

Antonino Orsino

Yunpeng Zang

Massimo Condoluci

Jose Angel Leon Calvo

Smriti Gopinath

Li Jingya

Antonino Orsini

Jeong Hun Kim

According to some embodiments, a method is performed by a wireless device. The method comprises obtaining a data channel transmit power for transmitting on a sidelink data channel to a receiving wireless device, obtaining a control channel transmit power for transmitting on a sidelink control channel, and transmitting on the sidelink data channel at the data channel transmit power and on the sidelink control channel at the control channel transmit power. In certain embodiments, the control channel transmit power is based on the data channel transmit power. In other embodiments, the control channel transmit power is determined independently of the data channel transmit power.

Power control for the sidelink control channel

Embodiments herein relate to a method performed by a UE () for handling communication in a wireless communication network. The UE () handles one or more data units based on a communication range requirement of one or more services, wherein the one or more data units are associated with the one or more services, by using a mapping of an indication of a communication range requirement and a radio resource for communication.

Method performed by a user equipment for handling communication in a wireless communication network

A radio device receives first sidelink control information from a further radio device. Based on assistance information stored in the radio device and the received first sidelink control information, the radio device determines a configuration for transmission of second sidelink control information. Based on the determined configuration for transmission of the second sidelink control information, the radio device receives the second sidelink control information from the further radio device. Based on the received second sidelink control information, the radio device receives a sidelink radio transmission from the further radio device.

Multi-stage sidelink control information

Provided is a computer-implemented method for determining a path of movement of a terminal device. The method includes (i) obtaining a set of measurements and/or parameters relating to the terminal device and/or a communication network in which the terminal device is operating, wherein respective measurements and/or respective parameters in the received set were obtained as the terminal device traversed a path of movement through a plurality of areas; (ii) using the obtained set to identify a plurality of candidate areas in which the terminal device may have been located as the terminal device traversed the path of movement; (iii) using the obtained set to determine respective transition metrics for pairs of the candidate areas; (iv) determining respective path metrics for a plurality of candidate paths; and (v) determining the path of movement traversed by the terminal device according to the determined path metrics.

Determining a path of movement of a terminal device

A method is provided that includes selecting a resource within a resource selection window for an initial transmission of a first Medium Access Control protocol data unit (MAC PDU) of a plurality of periodic MAC PDUs to be transmitted by a first communication device (TX UE) over a device-to-device, D2D, link to a second communication device (RX UE). The method further includes selecting a period (P) for periodic transmission of the plurality of periodic MAC PDUs so that initial transmissions of all MAC PDUs of the plurality of periodic MAC PDUs other than the first MAC PDU occur in resources after the resource selection window. Communication devices (RX UE) and computer program products are also provided.

Methods providing resource selection for D2D communications and related communication devices

A method by a wireless device () includes sending, to a network node () having an associated coverage area, a request for a sidelink (SL) resource pool configuration for a V2X application associated with the wireless device (). The request includes one or more geographical area identifiers associated with one or more respective SL resource pool configurations. The method further includes receiving, in response to the request, a SL resource pool configuration from the network node ().

Sidelink resource allocation for enhanced mobility

A method of operating a user equipment, UE, for device-to-device, D2D, transmission of a channel state information, CSI, report and/or a CSI reference signal, CSI-RS, is provided. The method may include identifying a CSI selection window containing candidate resources for use in D2D transmission of the CSI report and/or CSI-RS. The method may include identifying a data selection window containing candidate resources for use in D2D transmission of data and which at least partially overlaps a region of the CSI selection window. The method may include controlling transmission of data and the CSI report and/or CSI-RS to use at least one resource that is selected within the overlapping region of the CSI selection window and the data selection window.

Methods of resource selection for sidelink multi-stream transmission in wireless communications systems and related apparatuses

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.

Resource selection based on latency requirements

Various embodiments of the present disclosure provide methods and apparatuses for handling report of channel state information for sidelink. A method performed by a base station comprises receiving, from a first terminal device, at least one report indicating channel state information of at least one sidelink connection associated with the first terminal device.

Method and apparatus for handling sidelink reports

According to some embodiments, a method may be provided to operate a wireless communication device. A transmission resource reservation is transmitted with associated directional information relating to a direction of transmission of a sidelink data message, and after transmitting the transmission resource reservation, the sidelink data message is transmitted in accordance with the directional information.

Methods providing resource selection for directional sidelink communications

A technique for transmitting and receiving data in a radio communication from a second radio device to a first radio device is described. As to a method aspect of the technique, one or more radio resources are determined based on radio signals received at the first radio device. The one or more radio resources comprise at least one spatial stream among different spatial streams receivable at the first radio device. A status message indicative of the one or more determined radio resources is transmitted to the second radio device. The data from the second radio device is received at the first radio device on at least one radio resource depending on the one or more radio resources indicated in the transmitted status message.

Technique for device-to-device communication based on radio signals received from one or more radio sources

Methods and systems for autonomous sidelink resource allocation are provided. According to one aspect, a method performed by at least one wireless device for autonomous sidelink resource allocation comprises: at a first time, T, transmitting a first control message announcing a first reservation of a set of radio resources for sidelink communication; at a second time, T, transmitting a second control message announcing a second reservation of a set of radio resources for sidelink communication; and, at a third time, T, performing a sidelink communication using the set of radio resources reserved by the second reservation. The second reservation may, for example, confirm the first reservation, cancel or partially cancel the first reservation, modify the first reservation, or completely change the first reservation.

Methods and systems for autonomous sidelink resource allocation

A first radio device may send SL control information to a second radio device. The SL control information indicates at least one radio resource for transmission of a reference signal from the first radio device. The second radio device receives the reference signal. Further, the second radio device may forward the received sidelink control information to one or more other radio devices. Based on the received reference signal, the second radio device estimates quality of a radio channel between the first radio device and the second radio device. The estimated quality of the radio channel, may be used to control an SL radio transmission between the first radio device and the second radio device.

Reference signal management for sidelink radio transmission

A technique for transmitting and receiving a sequence of symbols on a sidelink, SL, in a transmission time interval, TTI, is described. As to a method aspect of the technique, an automatic gain control, AGC, is performed for the SL based on at least one first symbol of the SL in the TTI. Based on the AGC, SL control information, SCI, encoded in at least one second symbol of the SL in the TTI is received. Data encoded in at least one third symbol of the SL in the TTI is received based on the SCI.

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Espoo, Finland

Ricardo Blasco Serrano