In one example, a collection network node comprising a plurality of ingress ports obtains, at a first one of the plurality of ingress ports, a first copy of a packet of a packet flow comprising a plurality of packets. The collection network node determines whether the collection network node had previously obtained a copy of any of the plurality of packets of the packet flow. When it is determined that the collection network node had previously obtained a copy, the collection network node determines whether the collection network node had previously obtained a copy at the first one of the plurality of ingress ports or at a different one of the plurality of ingress ports. When it is determined that the collection network node had previously obtained a copy at a different one of the plurality of ingress ports, the collection network node refrains from forwarding the first copy.

A method for performing wireless communication by a first device, and a device for supporting same are provided. The method may comprise: transmitting, to a second device, at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) related to the at least one PSCCH; receiving, from the second device, at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information through at least one physical sidelink feedback channel (PSFCH) related to the at least one PSSCH; and determining a priority value of physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station, based on at least one priority value of the at least one SL HARQ feedback information.

A method for performing wireless communication by a first device and a device for supporting same are provided. The method may comprise the steps of receiving a physical sidelink shared channel (PSSCH) from a second device; determining a physical sidelink feedback channel (PSFCH) resource associated with the PSSCH; and transmitting hybrid automatic repeat request (HARQ) feedback to the second device on the PSFCH resource. Here, the PSFCH resource can be determined on the basis of a sub channel associated with the PSSCH, a slot associated with the PSSCH, a cast type of communication between the first device and the second device, an ID of the first device, and a source ID of the second device.

An operating method of a first terminal in a wireless communication system according to an embodiment of the disclosure may include: obtaining capability information of a second terminal; transmitting, to the second terminal, duplication transmission information for performing duplication transmission of a sidelink, based on the capability information; and performing duplication transmission of the sidelink based on the duplication transmission information, wherein the duplication transmission information includes sidelink radio bearer information, sidelink destination identifier information, and sidelink carrier information.

This application discloses a resource scheduling method, an apparatus, and a system, to provide a resource scheduling manner based on sidelink transmission. The method includes: A scheduling terminal device determines a resource for a sending terminal device to perform sidelink (sidelink) transmission; and the scheduling terminal device sends a first message to the sending terminal device, where the first message is used to indicate the transmission resource, where the resource is specifically used to perform a part or all of the following: transmission of data information, transmission of control information, and transmission of feedback information. A manner in which the scheduling terminal device determines, for the sending terminal device, the transmission resource for data transmission is provided, and is an enriched and complete sidelink-based resource configuration manner.

Proposed is a method for a first device performing wireless communication. The method may comprise the steps of: determining a first time domain and a second time domain with respect to a physical sidelink feedback channel (PSFCH) resource; performing sidelink data transmission to a second device through a resource on the first time domain; receiving, from the second device, hybrid automatic repeat request (HARQ) feedback associated with the sidelink data transmission; and on the basis of the HARQ feedback, performing sidelink data retransmission to the second device through a resource on the second time domain. For example, the first time domain may precede the PSFCH resource. For example, the second time domain may follow the PSFCH resource.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive a sidelink communication on a sidelink. The sidelink communication may include at least one of a grant, data received on a resource identified by the grant, a multi-stage grant, a multi-packet grant, or a relaying communication. The wireless communication device may transmit, on the sidelink after a time period since receiving the sidelink communication, a feedback message acknowledging receiving the sidelink communication. Numerous other aspects are provided.

Proposed is a method by which a first device performs wireless communication. The method may comprise the steps of: receiving, from a base station, information related to a first physical uplink control channel (PUCCH) resource and information related to a time gap between a physical sidelink feedback channel (PSFCH) and a PUCCH; transmitting sidelink control information (SCI) to a second device through a physical sidelink control channel (PSCCH); transmitting sidelink data to the second device through a physical sidelink shared channel (PSSCH) related to the PSCCH; determining a PSFCH resource on the basis of an index of a slot and an index of a subchannel which are related to the PSSCH, wherein, on the basis of the fact that a time gap between the determined PSFCH resource and the first PUCCH resource is smaller than the time gap between the PSFCH and the PUCCH, the first device drops transmission of a hybrid automatic repeat request (HARQ) feedback related to the sidelink data on the first PUCCH resource; receiving, from the base station, information related to a second PUCCH resource, on the basis of the transmission of the HARQ feedback being dropped; and transmitting an acknowledgment (ACK) related to the sidelink data to the base station on the basis of the second PUCCH resource.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may receive a configuration associated with reporting delta channel state information (CSI). The first wireless communication device may compute the delta CSI based at least in part on the configuration, the delta CSI indicating a difference between first CSI associated with a first connection and second CSI associated with a second connection, the first connection being between the first wireless communication device and a base station and the second connection being between the first wireless communication device and a second wireless communication device. The first wireless communication device may transmit, based at least in part on the configuration, a CSI report including an indication of the delta CSI and at least one of an indication of the first CSI or an indication of the second CSI. Numerous other aspects are described.

A method and an apparatus for feeding back channel state information (CSI) of user equipment (UE) in a communication system are disclosed. The method comprises the steps of: receiving, from a base station, configuration information related to a plurality of CSI reports; identifying the setting of the plurality of CSI reports corresponding to a plurality of measurement resources, on the basis of the configuration information; generating a first CSI report corresponding to a first measurement resource and a second CSI report corresponding to a second measurement resource when the plurality of CSI reports are set; and transmitting the first CSI report and the second. CSI report to the base station.