A method and apparatus for processing a data flow, and a computer storage medium are provided. The data flow processing method includes receiving, by an electronic device, first information, where the first information is used to indicate a transmission manner of data flow(s). The method also includes processing, by the electronic device, the data flow(s) based on the first information.

Methods for performing a handover in wireless communications for a user plane function (UPF) are disclosed. In an aspect, the method includes establishing a tunnel between the UPF and a target base station based on information in a path switch preparation request for a make before break handover of a user equipment (UE) from a source base station to the target base station, the path switch preparation request being received in response to a request originating by the target base station. The method further includes bi-casting a downlink data packet unit (PDU) to a source base station and to the target base station with a same sequence number (SN) in a tunnel protocol, receiving PDUs from the source base station and the target base station with corresponding PDUs having the same SNs in the tunnel protocol and discarding received duplicate PDUs based on the SNs in the tunnel protocol.

In some example embodiments, there may be provided a method. The method may include generating, by a user equipment, capability information including an indication of the user equipment being able to be configured with additional radio link control entities that are not accounted for fully or partially towards a limit for the user equipment's capability for data radio bearers or for radio link control entities; and sending, by the user equipment, the capability information including the indication to a base station.

Embodiments of this application relate to the field of communications technologies, and in particular, to a communication method and a communications apparatus. The solution includes: sending, by a source access network device, a first data packet of a terminal to a target access network device; and when the source access network device determines that the target access network device has received the first data packet, sending, by the source access network device, a first message to the terminal, where the first message is used to indicate the terminal to hand over to the target access network device.

A user entity (UE) such as a smartphone is configured to connect to both WiFi and a Long Term Evolution (LTE) cellular network for voice and data services. For voice, the UE supports both Voice over LTE (VoLTE) and Voice over WiFi (VoWiFi). When the UE is connected to VoWiFi and roaming from a first WiFi access point to a second WiFi access point, the UE and Mobility Management Entity in the cellular network carry out a preparatory handover to VoLTE to prevent service loss in the event of an unsuccessful VoWiFi connection from the second WiFi access point.

A connection between two UEs is identified by a single connection identifier. Different streams are transmitted over different wireless links with potential redundancy between streams. Initially a first WiFi link is used to communicate with the second UE. After the first UE decides it will handoff to a second WiFi AP it establishes a connection with a cellular AP and then communicates a second stream corresponding to the same connection. The first and second streams initially communicate the same content. The first WiFi link is terminated, but the second stream continues to communicate content. The first UE then establishes a second WiFi connection with a second WiFi AP and communicates a third content stream of the first connection to second UE via second WiFi link. The third stream initially communicates information also communicated over second stream. The cellular link is terminated. The second WiFi link is used to communicate content.

A service node updating method is provided. The method is performed by a terminal device and includes: receiving configuration information, where the configuration information includes first connectivity configuration information used to maintain both a connection to a source node and a connection to a target node in a service node updating procedure and second connectivity configuration information used to release the connection to the source node and connect to the target node; processing, by applying the first connectivity configuration information, a layer 2 protocol entity corresponding to a bearer between the terminal device and the source node, to reconfigure the bearer as a source node split bearer; and processing, by applying the second connectivity configuration information, a layer 2 protocol entity corresponding to the bearer, to reconfigure the source node split bearer as a target node bearer.

A method for managing handover procedure in a radio access network (RAN) includes initiating, by a source base station, a handover procedure for a first user equipment with a target base station, wherein the first user equipment is connected to the source base station; identifying, by the source base station, a second user equipment that functions as a relay device, for relaying data related to the first user equipment from the source base station to the first user equipment during the handover procedure; establishing, by the source base station, a first connection between the identified second user equipment and the first user equipment; transmitting, by the source base station, buffered data corresponding to the first user equipment, to the target base station; transmitting, by the source base station, at least one block of data from the buffered data to the first user equipment, via the second user equipment, during the handover procedure for the first user equipment from the source base station to the target base station; and disconnecting, by the source base station, the established first connection between the second user equipment and the first user equipment, upon receiving a sequence number (SN) status request message from the target base station.

A handover method, performed by a source base station in a wireless communication system, includes: receiving an indicator indicating a start of packet duplication transmission of a user plane function (UPF); and transmitting at least one redundant packet to a target base station, based on the indicator indicating the start of the packet duplication transmission of the UPF, wherein the packet duplication transmission includes transmitting, to the target base station, a packet that is identical to a packet transmitted by the UPF to the source base station, wherein the redundant packet includes a packet that was received from the UPF before the start of the packet duplication transmission but is not transmitted to a User Equipment (UE) and stored.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive data from both a source base station and a target base station during handover. For example, the UE may refrain from resetting or reestablishing media access control (MAC) and packet data convergence protocol (PDCP) layer configurations until after a successful access procedure is performed with the target base station. In some cases, a single radio link control (RLC)/PDCP stack may be used during handover procedures. A source base station may, for example, forward data to a target base station after receiving a handover execution message. A UE may identify and resolve any duplicate data sent by both base stations during the transition. Additional signaling may be used (e.g., during the radio resource control (RRC) configuration) to indicate that a UE supports dual link handover.