Provided in embodiments of the present application are a wireless communication method, a terminal device and a network device. The method includes that: a terminal device determines that a first message generated based on a first Packet Data Convergence Protocol (PDCP) has been successfully sent to a network device, the first message indicating the network device to switch the first PDCP to a second PDCP; and the terminal device sends a second message generated based on the second PDCP to the network device. According to the method, the terminal device and the network device, the network device can correctly parse messages sent by the terminal device.

A method and apparatus for performing an uplink (UL) transmission with pre-allocated beams in a wireless communication system is provided. A user equipment (UE) receives a connection release message from a network in a first state. The connection release message includes information on a pre-allocated UL resource for UL transmission with pre-allocated beams. The UE enters a second state from the first state, selects a cell, and performs the UL transmission to the cell in the second state via the pre-allocated beams based on the pre-configured UL resource for UL transmission when a data is available for transmission. The first state may be a radio resource control (RRC) connected state, and the second state may be an RRC inactive state and/or an RRC idle state.

Provided are a wireless communication method and apparatus, and a network device. The method comprises: if a cell handover occurs in a terminal device, a source cell sending first information to a target cell, wherein the first information comprises at least one first PDCP SN and a first data packet group, and the first data packet group comprises at least one first data packet; and the source cell sending second information to the target cell, such that the target cell determines, according to the second information, a second PDCP SN associated with a second data packet, wherein the second data packet is a data packet that is the first, not associated with the first PDCP SN, of the data packets that are received by the target cell.

In one embodiment, a gateway to a Layer-3 network forms a first Layer-2 tunnel between the gateway and a first wireless access point (AP) that communicates wirelessly with a first mobile node of a mobile system (MS) via a first wireless connection. The gateway generates a mapping that associates an onboard device of the MS with the first AP and an identifier for the MS, based on traffic conveyed via the first Layer-2 tunnel and associated with the onboard device, the traffic comprising a header that indicates the identifier for the MS. The gateway receives, from a second AP, an indication that the MS is roaming from the first wireless connection to a second wireless connection, the indication including the identifier for the MS. The gateway updates the mapping to associate the onboard device of the MS with a second AP, based on the indication that the MS is roaming.

Disclosed is an electronic device including at least one wireless communication circuit configured to provide a first radio access technology (RAT) and a second RAT, at least one processor operatively connected to the at least one wireless communication circuit and configured to provide a first packet data convergence protocol (PDCP) related to the first RAT and a second PDCP related to the second RAT, a volatile memory operatively connected to the at least one processor and including, in at least a partial region thereof, a first buffer, and a nonvolatile memory operatively connected to the at least one processor or coupled to the processor. The electronic device may change a PDCP version of a data packet based on a change of a PDCP version. Besides, other various embodiments recognized through the present disclosure can be made.

A reliable data transmission method and system based on a predicted amount of data in a vehicle-to-infrastructure (V2I) network is disclosed. A data transmission method of a base station includes determining a maximum amount of data to be transmitted from the base station disposed around a road to a vehicle traveling on the road, determining an encoding number for systematic network coding (SNC) based on the determined amount of data, performing the SNC on original data based on the encoding number and the amount of data, and transmitting encoded data obtained by performing the SNC to the vehicle.

A method for processing information, a terminal device, a chip, a computer-readable storage medium, a computer program product and a computer program are provided. The method includes: transmitting (21), by the terminal device, a msg3 without carrying a first type of content, during a process of performing a first type of handover by the terminal device. The first type of content includes data transmitted on a first type of channel.

A method for processing information, a terminal device, a chip, a computer-readable storage medium, a computer program product and a computer program are provided. The method includes: transmitting (21), by the terminal device, a msg3 without carrying a first type of content, during a process of performing a first type of handover by the terminal device. The first type of content includes data transmitted on a first type of channel.

A first donor apparatus 200S transmits to the UE 100 a first handover command indicating a handover of a UE 100 (lower apparatus) lower than an IAB node 300. The IAB node 300 receives the first handover command addressed to the UE 100, and then suspends transfer of the first handover command to the UE 100 until a handover of the IAB node 300 is performed.

A first donor apparatus 200S transmits to the UE 100 a first handover command indicating a handover of a UE 100 (lower apparatus) lower than an IAB node 300. The IAB node 300 receives the first handover command addressed to the UE 100, and then suspends transfer of the first handover command to the UE 100 until a handover of the IAB node 300 is performed.