A data flow transmission method, a terminal, and a network-side device are provided. The data flow transmission method includes: mapping QoS flows of an MBS to an MRB and a DRB; transmitting the QoS flows through at least one of the MRB or the DRB.

Apparatuses, methods, and systems are disclosed for power headroom report generation. One method includes aggregating multiple serving cells. The method includes determining that a power headroom report is triggered. The method includes determining that an uplink resource for a new transmission on a serving cell of the multiple serving cells is allocated at a first time after the power headroom report is triggered. The method includes determining a power headroom value for each serving cell of the multiple serving cells being activated based on information received prior to and including a predetermined time before the start of the uplink resource at the first time. The method includes generating a power headroom report medium access control control element including at least the power headroom value for each serving cell of the multiple serving cells being activated.

The present application discloses a method for data transmission, a terminal device, and a network device. The method can include receiving first control information for scheduling a terminal device to perform data transmission; and determining at least one transmission frequency band corresponding to the transmission information. The first mapping relationship can include a correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands, and the transmission information can include at least one of: an attribute of the first control information, resource type information for the data transmission, and traffic information of the terminal device. The terminal device can determine a target transmission frequency band from the at least one transmission frequency band, and transmit data with the network device on the target transmission frequency band according to the first control information.

The present application discloses a method for data transmission, a terminal device, and a network device. The method can include receiving first control information for scheduling a terminal device to perform data transmission; and determining at least one transmission frequency band corresponding to the transmission information. The first mapping relationship can include a correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands, and the transmission information can include at least one of: an attribute of the first control information, resource type information for the data transmission, and traffic information of the terminal device. The terminal device can determine a target transmission frequency band from the at least one transmission frequency band, and transmit data with the network device on the target transmission frequency band according to the first control information.

A relay communication method, includes: a relay node receives data from a second network node; the relay node performs first-part processing and second-part processing on the data; and the relay node sends to a third network node, data obtained after the first-part processing and the second-part processing. In one non-limiting example, thy first-part processing includes at least one of: physical layer function processing, media access control layer function processing, and adaptation function processing. In another non-limiting example, the second-part processing includes at least one of simplified radio link control layer function processing, adaptation function processing, media access control layer function processing, and physical layer function processing.

A method and apparatus for sidelink hybrid automatic repeat request (HARQ) feedback and resource pool selection is provided. When user equipment (UE) autonomous resource selection is configured, a wireless device selects a resource pool configured with physical sidelink feedback channel (PSFCH) resources, among one or more resource pools allowed for a logical channel, based on i) sidelink data being available in the logical channel, ii) any resource pool being not selected for the logical channel, and iii) hybrid automatic repeat request (HARQ) feedback being enabled for the logical channel.

A mobile communication uplink information transmission method and system are provided, to solve a problem that when a terminal device allocates uplink control information and an uplink shared channel on a semi-statically configured physical uplink shared channel, transmission performance of the uplink shared channel is affected by a quantity of resources occupied by the uplink control information. The method is used for a terminal device to send uplink information and a network device to receive uplink information, and the terminal device receives grant-free resource configuration information, and determines a first resource used to allocate a physical uplink shared channel. The terminal device further determines a third resource used to allocate an uplink shared channel. The third resource is a part of the first resource and does not intersect with the second resource, or the second resource is empty. The present invention further provides a system used for the method.

A mobile communication uplink information transmission method and system are provided, to solve a problem that when a terminal device allocates uplink control information and an uplink shared channel on a semi-statically configured physical uplink shared channel, transmission performance of the uplink shared channel is affected by a quantity of resources occupied by the uplink control information. The method is used for a terminal device to send uplink information and a network device to receive uplink information, and the terminal device receives grant-free resource configuration information, and determines a first resource used to allocate a physical uplink shared channel. The terminal device further determines a third resource used to allocate an uplink shared channel. The third resource is a part of the first resource and does not intersect with the second resource, or the second resource is empty. The present invention further provides a system used for the method.

Embodiments of this application provide a duplication mode communication processing method in a central unit-distributed unit (CU-DU) architecture. In a possible implementation, in a process of establishing a user plane tunnel between a CU and a DU by exchanging information about uplink tunnel endpoints and information about downlink tunnel endpoints, the DU provides an identity of a primary path to the CU, thereby implementing a duplication mode of a data radio bearer.

Embodiments of this application provide a duplication mode communication processing method in a central unit-distributed unit (CU-DU) architecture. In a possible implementation, in a process of establishing a user plane tunnel between a CU and a DU by exchanging information about uplink tunnel endpoints and information about downlink tunnel endpoints, the DU provides an identity of a primary path to the CU, thereby implementing a duplication mode of a data radio bearer.