Method and apparatus for handling retransmission indication for configured grant in sidelink in a wireless communication system

    公开(公告)号:US10925039B2

    公开(公告)日:2021-02-16

    申请号:US16851623

    申请日:2020-04-17

    Abstract: A method and apparatus are disclosed. In an example, a first device receives first information and second information from a base station. The first device is configured with a configured grant for sidelink communication via the first information. The configured grant is indicative of first resources for sidelink communication. The second information is indicative of one or more timing offsets and an identity for second resources. The first device transmits sidelink data to a second device via a first resource of the first resources. The first device receives and/or detects a first signal, from the second device, indicative of a reception result associated with the sidelink data. The first device determines a second time and a frequency location based on the second information. The first device transmits a second signal to the base station via a second resource associated with the second time and the frequency location.

    METHOD AND APPARATUS FOR IMPROVING SCHEDULING MODE SIDELINK COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200229006A1

    公开(公告)日:2020-07-16

    申请号:US16739504

    申请日:2020-01-10

    Abstract: A method and apparatus are disclosed from the perspective of a first device for performing sidelink communication. In one embodiment, the method includes the first device being configured with network scheduling mode for sidelink by a base station. The method further includes the first device being configured with a first set of resources with a first time pattern for sidelink transmission through a dedicated signaling. The method also includes the first device using the first set of resources to perform sidelink transmission when the first device does not detect beam failure. Furthermore, the method includes the first device detecting a beam failure between the first device and the base station. In addition, the method includes the first device using the first set of resources to perform sidelink transmission to a second device when the beam failure is not resolved.

    Method and apparatus for improving initialization of sidelink duplication reception in a wireless communication system

    公开(公告)号:US10687376B2

    公开(公告)日:2020-06-16

    申请号:US16561864

    申请日:2019-09-05

    Abstract: Methods and apparatuses for improving initialization of sidelink duplication reception in a wireless communication system are disclosed herein. In one method, a User Equipment (UE) receives a first Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) on a logical channel associated with a sidelink radio bearer (SLRB). The UE initializes a first state variable based on a partial Reordering_Window and a PDCP Sequence Number (SN) of the first received PDCP PDU, wherein the first state variable indicates the PDCP SN of a last PDCP Service Data Unit (SDU) delivered to the upper layers by a PDCP entity created for the SLRB, and the partial Reordering_Window is less than a Reordering_Window. The UE performs a re-ordering procedure for the first PDCP PDU using the initialized first state variable.

    METHOD AND APPARATUS FOR HANDLING SIDELINK RECEPTION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200099481A1

    公开(公告)日:2020-03-26

    申请号:US16525977

    申请日:2019-07-30

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), if sidelink packet duplication is configured or enabled for a Sidelink Radio Bearer (SLRB), a first Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU), corresponding to a first PDCP Service Data Unit (SDU), and a duplicate of the first PDCP PDU, are transmitted. A first PDCP Sequence Number (SN) of the first PDCP PDU is set based upon one or more state variables used for sidelink transmission on the SLRB. If the sidelink packet duplication is de-configured or disabled for the SLRB, a second PDCP PDU, corresponding to a second PDCP SDU, is transmitted. Noduplicate of the second PDCP PDU is transmitted. A second PDCP SN of the second PDCP PDU is set based upon the one or more state variables used for sidelink transmission on the SLRB.

    Method and apparatus for pathloss derivation for beam operation in a wireless communication system

    公开(公告)号:US10602456B2

    公开(公告)日:2020-03-24

    申请号:US15673971

    申请日:2017-08-10

    Abstract: A method and apparatus are disclosed, from the perspective of the UE, for deriving UE transmit power. In one embodiment, the method includes the UE deriving a first pathloss value measured from a first reference signal. In addition, the method includes the UE deriving a second pathloss value measured from a second reference signal. The method also includes the UE transmitting a first UL transmission wherein the UL transmit power of the first UL transmission is derived from the first pathloss value. The method further includes the UE transmitting a second UL transmission wherein the UL transmit power of the second UL transmission is derived from the second pathloss value.

    METHOD AND APPARATUS OF SOURCE INDICATION FOR SIDELINK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200084783A1

    公开(公告)日:2020-03-12

    申请号:US16563475

    申请日:2019-09-06

    Abstract: A method and apparatus are disclosed from the perspective of a transmitting device. In one embodiment, the method includes being configured or allocated with an identity, wherein the identity comprises a first part of the identity and a second part of the identity. The method also includes the transmitting device generating a data packet for sidelink transmission, wherein the data packet includes the second part of the identity. Furthermore, the method includes transmitting device generating a control information associated with the data packet, wherein the control information includes the first part of the identity. The method further includes the transmitting device transmits the control information and the data packet.

    Facilitating detection of control channels with different transmission time intervals in a wireless communication system

    公开(公告)号:US10356778B2

    公开(公告)日:2019-07-16

    申请号:US15594250

    申请日:2017-05-12

    Abstract: Facilitation detection of control channels with different transmission time intervals (TTIs) in wireless communications systems is described herein. In one example, a computer-implemented method comprises: monitoring, by a mobile device comprising a processor, a first control channel in the beginning of a first TTI; and receiving, by the mobile device, a first downlink control information (DCI) on the first control channel in the first TTI, wherein information of the first DCI indicates a pattern of a second TTI associated with a second control channel, and wherein the second control channel occurs later than the first control channel and the second TTI is shorter than the first TTI. The computer-implemented method can also comprise determining, by the mobile device, whether to monitor the second control channel of the second TTI based on the information of the first DCI.

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