This application provides for a data transmission method, an apparatus, and a device. The method may be applied to a relay communication system. The method includes a first network device that receives a first data packet. The first data packet is a data packet of a first multimedia broadcast multicast service (MBMS), and the first data packet carries first information. When second information of the first network device matches the first information, the first network device sends the first data packet to a terminal device that accesses the first network device. The second information is preconfigured for the first network device. In this way, the MBMS is transmitted in the relay communication system.

A method for transmitting automatic repeat request acknowledgement feedback information supporting a multicast service and an apparatus are provided. The method includes: receiving N pieces of first downlink control information (DCI) and M pieces of second DCI in at least one first time unit, where the first DCI is a first-type DCI, the second DCI is a second-type DCI. Each piece of first DCI includes a first downlink assignment index (DAI), and the first DAI includes a first counter downlink assignment index (C-DAI) that indicates an accumulative quantity of pieces of first-type DCI for scheduling transmission of a downlink data channel. Each piece of second DCI includes a second DAI, and the second DAI includes a second C-DAI that indicates an accumulative quantity of pieces of second-type DCI for scheduling transmission of a downlink data channel.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a multicast-broadcast user service description message. The UE may communicate, using a multicast-broadcast service (MBS) transport function (MBSTF) client, with an MBS entity of the network entity, in accordance with information included in the user service description message, wherein the MBS entity is split into a multicast delivery function and a unicast application server. Numerous other aspects are described.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may dynamically indicate a resolution change to a display of the UE during a video call. For example, a first UE may communicate a configuration message with a second UE to establish a video call between the first UE and the second UE and indicate a first value for a resolution of a display of the first UE. During the video call, the first UE may identify a change to the resolution of the display and may transmit a message to the second UE that indicates the change to the resolution. In response to receiving the message, the second UE may encode one or more packets including video information for the video call according to a second value for the resolution and transmit the one or more packets to the first UE.

A wireless communication method of a wireless communication apparatus for supporting a plurality of radio access technologies (RATs) including receiving a first downlink signal corresponding to a first RAT and a second downlink signal corresponding to a second RAT from a base station through a first frequency band, decoding the first downlink signal, detecting the second downlink signal based on a result of decoding of the first downlink signal, and decoding the detected second downlink signal to acquire data included in the second downlink signal may be provided.

To measure the channel quality of the own cell accurately in a condition where there is no interference from a neighbor cell. A wireless communication terminal according to the invention is a wireless communication terminal to be connected to a base station for transmitting and receiving data to/from the base station, the wireless communication terminal including: a receiver that receives a signal which includes control information provided for measuring a channel quality of own cell from the base station; an extractor that extracts the control information from the signal received by the receiver; a measurement section that measures, on the basis of the control information, the channel quality of the own cell in a domain where a neighbor cell does not transmit a signal; and a transmitter that transmits a measurement result of the channel quality of the own cell measured by the measurement section, to the base station.

A method and apparatus for selective connection establishment for a broadcast-multicast service in a wireless communication system is provided. A wireless device receives bandwidth information for a broadcast-multicast service. A wireless device determines whether a connection to receive the broadcast-multicast service is required or not, based on the bandwidth information. A wireless device receives the broadcast-multicast service based on the determination.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first node in a wireless communication system, including receiving, from a second node, downlink user data through a first radio bearer, the downlink user data including multicast service data; transmitting, to at least one UE, the downlink user data through a second radio bearer; and transmitting, to the second node, a downlink data delivery status including PDCP sequence number information, wherein the PDCP sequence number information includes a higher PDCP sequence number between a highest PDCP sequence number successfully delivered in sequence associated with a first transmission mode and a highest PDCP sequence number transmitted to lower layers associated with a second transmission mode.

A mobile network platform creates a device group according to a member device supporting a mobile network multicast communication manner in a Machine-to-Machine Communications (M2M) group, generates an identifier of an external group corresponding to the device group, and requests a service capability exposure function (SCEF) to create the external group according to the identifier of the external group and an external device identifier of the member device supporting the mobile network multicast communication manner. When receiving an access request for the M2M group, the mobile network platform obtains the device group in the M2M group, learns of the corresponding external group, and then requests the SCEF to access the member device in the external group in a multicast communication manner. Hence, an amount of information generated due to interaction between an M2M platform and an M2M device is reduced, while reducing resource overheads.

Disclosed is method and an evolved NodeB (eNB) for use in a Long Term Evolution (LTE) network including establishing an X2 interface between the eNB and another eNB and communicating information between the eNB and the another eNB via the X2 interface.