Asustek Computer Inc.

Innovative Sonic Corporation

Asus Technology Licensing Inc.

Innovation Sonic Corporation

Li-Chih Tseng

Ming-Che Li

Li-Te Pan

Chun-Wei Huang

Wei-Yu Chen

Yi-Hsuan Kung

Richard Lee-Chee Kuo

Ko-Chiang Lin

Yu-Hsuan Guo

Meng-Hui Ou

Hsin-Hsi Tsai

Yi-Hsuan Huang

Ming-Chi Li

Wei-Ming Yin

Methods, systems, and apparatuses are provided for transmission of sidelink reference signals and sidelink data in a wireless communication system, wherein a method of a first device comprises receiving a first configuration of a first sidelink resource pool shared for sidelink data transmission and sidelink reference signal, receiving a second configuration of a first parameter of a maximum number of sidelink data transmissions in the first sidelink resource pool, selecting a first number for sidelink data retransmissions and also for sidelink reference signal transmissions based on the first parameter, selecting one or more first sidelink resources, in the first sidelink resource pool, according to at least the first number, and performing at least a first sidelink data retransmission for a sidelink data packet and a first sidelink reference signal transmission on a first sidelink resource of the one or more first sidelink resources.

Method and apparatus for determination of maximum allowed transmission number for sidelink reference signal and sidelink data in a wireless communication system

A method and apparatus are disclosed from the perspective of a first device. In one embodiment, the method includes the first device performs sensing on a data resource pool, and the first device selects/derives at least a first data resource from the data resource pool based on the sensing result of the data resource pool. The method further includes the first device transmits a first control information on a first control resource, wherein the first control information allocates or indicates the first data resource. The method also includes the first device performs a first data transmission on the first data resource to at least one second device. Furthermore, the method includes the first device determines or derives a first set of feedback resource(s) based on the first control resource and/or the first data resource; and the first device receives a first set of feedback transmission(s) on the first set of feedback resource(s) from at least the one second device, wherein the first set of feedback transmissions are associated with the first data transmission.

Method and apparatus of deriving feedback resource for sidelink transmission in a wireless communication system

The first UE establishes a PC5 connection with a relay UE for supporting a relay communication between the first UE and a second UE via the relay UE, wherein a direct link context associated with the relay communication includes a layer-2 Identity (ID) of the second UE. The first UE initiates a link identifier update (LIU) procedure with the second UE via the relay UE, wherein the first UE receives a LIU response message from the second UE in the LIU procedure, and the LIU response message includes a new layer-2 ID of the second UE. The first UE does not update the direct link context with the new layer-2 ID of the second UE or the first UE keeps the layer-2 ID of the second UE in the direct link context without updating the direct link context with the new layer-2 ID of the second UE.

Method and apparatus for remote UE supporting link identifier update procedure in UE-to-UE relay communication in a wireless communication system

A method and apparatus are disclosed from the perspective of a first device to perform sidelink communication. In one embodiment, the first device has a periodic sidelink resource reservation, wherein the periodic sidelink resource reservation comprises, reserves, or provides one set of sidelink resources in one period. The first device also has one or more sidelink logical channels with available sidelink data, wherein the one or more sidelink logical channels are associated with one or more destinations. Furthermore, the first device selects or determines a first destination, among the one or more destinations, satisfying at least a condition that an initial sidelink resource of the one set of sidelink resources is within sidelink active time associated with the first destination. In addition, the first device generates a first data packet for the first destination. Also, the first device performs one or more sidelink transmissions on the one set of sidelink resources to the first destination, wherein the one or more sidelink transmissions includes, delivers, or comprises the first data packet.

Method and apparatus of handling periodic sidelink resources and discontinuous reception for sidelink communication in a wireless communication system

A method and apparatus are disclosed from the perspective of a first device to perform sidelink communication. In one embodiment, the method includes the first device performing sidelink resource selection or reselection procedure for a sidelink transmission to a second device, wherein the sidelink resource selection or reselection procedure is performed to select at least one sidelink resource from candidate sidelink resources within a time duration of selection window. The method further includes the first device selecting a first sidelink resource based on sidelink active time or wake-up time of the second device, wherein the first sidelink resource is within the time duration of selection window. The method also includes the first device performing the sidelink transmission on the first sidelink resource to the second device.

Method and apparatus of handling device-to-device resource selection with consideration on discontinuous reception operation in a wireless communication system

In an example from the perspective of a first User Equipment (UE), in response to performing successful listen before talk (LBT), the first UE determines a channel occupancy time (COT). The first UE determines whether or not a second sidelink transmission, to be performed by a second UE, is within the COT. The first UE determines information, associated with LBT type and/or cyclic prefix (CP) extension, for inclusion in a first sidelink transmission in the COT, wherein whether the information includes first information associated with LBT type and/or CP extension or the information includes second information associated with LBT type and/or CP extension is based on the determination of whether or not the second sidelink transmission is within the COT. The UE transmits, to the second UE, the first sidelink transmission in the COT. The first sidelink transmission includes the information. The second sidelink transmission is associated with the first sidelink transmission.

Method and apparatus for listen before talk for sidelink transmission in a wireless communication system

Methods, systems, and apparatuses can comprise a User Equipment (UE) in a wireless communication system applying at least a unicast discontinuous reception (DRX) configuration associated with a first onDuration timer and/or a first Inactivity timer, applying at least a multicast DRX configuration associated with a second onDuration timer and/or a second Inactivity timer, receiving a DRX Command Medium Access Control (MAC) Control Element (CE) sent from a network by a periodic (pre)-configured downlink assignment for multicast, stopping the second onDuration timer, and stopping the second Inactivity timer.

Method and apparatus of handling discontinuous reception (DRX) command for MBS (multicast broadcast service) operation in a wireless communication system

In an example, a User Equipment (UE) receives a message associated with Physical Downlink Shared Channel (PDSCH) parameter configuration. The message includes a first parameter indicating a first list of entries associated with time resource allocation for multiple PDSCHs, a second parameter indicating reception of multiple repetitions for a single PDSCH, and a third parameter indicating a second list of entries associated with time resource allocation. Each entry in the second list indicates a single time resource allocation. If the UE receives a Downlink Control Information (DCI) indicative of a first entry in the first list, the UE receives a plurality of PDSCHs based on a plurality of time resource allocations indicated by the first entry. A first repetition number for the plurality of PDSCHs is determined to be one. If the UE receives a DCI indicative of a second entry in the second list, the UE receives one or more PDSCHs with repetition based on a single time resource allocation indicated by the second entry. A second repetition number for the one or more PDSCHs is determined based on the second parameter.

Method and apparatus of indicating aggregation number in a wireless communication system

In an example, a device receives a configuration of a sidelink resource pool for sidelink data transmission and sidelink reference signal transmission. The device determines to perform a sidelink reference signal transmission in a first Transmission Time Interval (TTI) of the sidelink resource pool, wherein the sidelink reference signal transmission is associated with a destination identity (ID) and a source ID, and the sidelink reference signal transmission has a highest priority among one or more pending sidelink reference signals and one or more sidelink logical channels with pending sidelink data. The device generates a first sidelink data packet based on a first sidelink logical channel with first pending sidelink data, wherein the first sidelink data packet is associated with the destination ID and the source ID. The device performs, in the first TTI, the sidelink reference signal transmission and a sidelink data transmission for transmitting the first sidelink data packet.

Method and apparatus for sidelink control information of sidelink reference signal in a wireless communication system

Methods and apparatuses for handling discontinuous reception and partial sensing for sidelink communication to reduce potential latency due to additional sensing, and to improve resource utilization efficiency. A first device can perform sidelink communication to at least a second device, or a second device in a sidelink resource pool, and trigger to perform resource selection for a sidelink data at a timing. The first device can perform sensing for a first contiguous sensing duration before a sidelink on-duration active time of the second device, determine or select a first sidelink resource from a set of sidelink resources, derive or determine the set of sidelink resources based on at least a sensing result in the first contiguous sensing duration, and perform a first sidelink transmission on the first sidelink resource for transmitting the sidelink data to the second device.

Method and apparatus of handling discontinuous reception and partial sensing for sidelink communication in a wireless communication system

A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives and/or detects a multicast transmission of downlink data on a configured downlink multicast resource, wherein the multicast transmission is associated with a Hybrid Automatic Repeat Request (HARQ) process. The UE starts a multicast HARQ Round Trip Time (RTT) timer associated with the HARQ process. The UE determines whether to start a unicast HARQ RTT timer associated with the HARQ process based on whether the UE is configured with a Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).

Method and apparatus of handling discontinuous reception (DRX) timer for multicast data reception in a wireless communication system

Methods, systems, and apparatuses for Sidelink Discontinuous Reception (SL DRX) in a wireless communication system to avoid ambiguity on slot offset calculations on SL DRX. A method for a UE comprises performing a SL communication associated with a destination Identity (ID), having a SL DRX configuration associated with the SL communication, wherein the SL DRX configuration comprises at least an on-duration timer and a DRX cycle, deriving a first offset associated with the SL communication based on the destination ID and the DRX cycle, deriving a second offset associated with the SL communication based on the destination ID and a number of slots per subframe, starting the on-duration timer after a time period determined based on the second offset from the beginning of a subframe, wherein the subframe is determined based on at least the first offset, and monitoring Sidelink Control Information (SCI) when the on-duration timer is running.

Method and apparatus for sidelink discontinuous reception in a wireless communication system

A method and apparatus are disclosed. In an example from the perspective of a first device, a grant is received from a network node. The grant allocates a set of sidelink data resources. One or more sidelink data transmissions are performed on the set of sidelink data resources. A second feedback information associated with the one or more sidelink data transmissions is received and/or detected. An uplink resource is derived. A first feedback information is transmitted on the uplink resource to the network node. The first feedback information is set based upon the second feedback information.

Method and apparatus of requesting resource for sidelink retransmission in a wireless communication system

Methods and apparatuses for handling partial sensing and discontinuous reception for sidelink communication to reduce potential latency due to additional sensing and to improve resource utilization efficiency. Various embodiments can comprise a first device performing sidelink communication to at least a second device, or a second device in a sidelink resource pool, and triggering to perform resource selection for a sidelink data at a timing, wherein the first device (already) receives or monitors sidelink control information for a (contiguous) time duration before the timing. The first device can perform sensing for a contiguous sensing duration after the timing, determine or select a first sidelink resource from a set of sidelink resources, and perform a first sidelink transmission on the first sidelink resource for transmitting the sidelink data to the second device.

Method and apparatus of handling partial sensing and discontinuous reception for sidelink communication in a wireless communication system

Methods and apparatuses for handling device-to-device feedback transmission in a wireless communication system are disclosed herein. In one method, a first device receives a configuration for operating in a network scheduling mode for acquiring sidelink resources. The first device receives a sidelink control information with a report request from a second device. The first device triggers or is triggered to transmit a report to the second device in response to the report request. If the first device has no available sidelink resource for transmitting the report, the first device triggers a scheduling request. The first device transmits a signaling of the scheduling request to the network. The first device receives a sidelink grant from the network. The first device utilizes sidelink resource(s) indicated by the sidelink grant to transmit the report to the second device.

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Taipei, Taiwan

Li-Chih Tseng